Punch, press working device and press working method as well as die

Abstract

To provide a punch that is configured so that a length thereof can be further shortened to perform press working while applying vibration.SOLUTION: A punch includes: a punch body whose holding part receives pressing force in a first direction applied from a press working device and transmits the pressing force in the first direction to a material to be subjected to press working, when performing the press working; and a vibrator that is attached to the punch body and applies vibration of a predetermined wavelength with amplitude in the first direction to the punch body. A length in the first direction of the punch body is equal to a half of the wavelength of the vibration. A length in the first direction in the punch body, which is a length from the holding part to one end part of the punch body is equal to a quarter of the wavelength of the vibration. A shape of the punch body, which is a shape thereof from the holding part to the one end part is formed rotationally symmetric with a central shaft extending in the first direction on a center of the punch body. The vibrator is attached to a space between the holding part and the one end part, of a portion of the punch body.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a punch, a press working apparatus, a press working method, and a die, and more particularly to a punch and a die used in press working, a press working apparatus, and a press working method. [Background technology]

[0002] Press working is a type of plastic processing that is widely used as a method for forming products from metal materials. The upper die of the press working mold is also simply called the punch, and the lower die of the press working mold is also simply called the die.

[0003] In a mold for a press processing device in which a workpiece is placed between a lower mold and an upper mold, and the upper mold is pressed toward the lower mold in a first direction to process the workpiece, the upper mold has an operating end that contacts the workpiece and presses it, a vibrating end that is provided on the opposite side of the operating end along the first direction and to which vibrations are applied, a pair of holding parts that are provided between the operating end and the vibrating end and spaced apart in a second direction perpendicular to the first direction, and that fix the upper mold and transmit a driving force in the first direction to the upper mold, and a hole that penetrates the upper mold in a third direction perpendicular to the first and second directions and is provided between the pair of holding parts (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-147289 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the upper die described above requires a vibrator to be attached to the vibrating end, which effectively makes it long. The punch in the upper die described above needs to be about 300 mm long, and the vibrator that applies the vibration is attached externally to the punch, so the effective length is over 300 mm. A long punch places restrictions on the press processing equipment that can be used, and it is difficult to handle.

[0006] The present invention has been made in view of the above circumstances, and aims to make it possible to perform press working by shortening the length and applying vibration. [Means for solving the problem]

[0007] A punch according to one aspect of the present invention is a punch for a die that is attached to a press processing device and used in press processing, and includes: a punch body that, during press processing, receives a pressing force in a first direction applied from the press processing device at a holding part and transmits the pressing force in the first direction to a material to be pressed; and a vibrator that is attached to the punch body and applies vibrations of a predetermined wavelength and an amplitude in the first direction to the punch body, wherein the length of the punch body in the first direction is one-half the wavelength of the vibrations, and the length of the punch body in the first direction, which is a length from the holding part to one end of the punch body, is one-fourth the wavelength of the vibrations, and the shape of the punch body from the holding part to the one end is formed rotationally symmetrically with respect to a central axis that extends through the center of the punch body in the first direction, and the vibrator is attached to the punch body between the holding part and the one end.

[0008] The holding portion may be caused to protrude from the punch body in a direction intersecting the first direction.

[0009] The holding portion may be formed in a flange shape.

[0010] The punch body can be formed cylindrically from the holding portion to the one end, and the vibrator can be formed in a ring shape that can be attached so as to cover a portion of the side surface of the punch body between the holding portion and the one end of the punch body.

[0011] The vibrator may be a piezoelectric element.

[0012] The punch body may be provided with a hole extending through the center of the punch body in the first direction, the hole being for passing air.

[0013] A punch tip member may further be provided that is detachably attached to the other end of the punch body and that comes into contact with the material and presses the material in the first direction when pressing.

[0014] The punch tip member can be attached to the other end of the punch body by threading.

[0015] The punch tip member can be threaded onto a bolt inserted from the one end of the punch body into a hole extending in the first direction through the center of the punch body.

[0016] The bolt may be provided with a first hole extending in the first direction through the center of the bolt, the first hole being for passing air, and the punch tip member may be provided with a second hole extending in the first direction through the center of the punch tip member, the second hole communicating with the first hole and for passing air.

[0017] The punch may be provided in the press working device.

[0018] A press working method according to one aspect of the present invention uses a die punch comprising: a punch body that receives a pressing force in a predetermined direction applied from a press working device at a holding part and transmits the pressing force in that direction to a material to be press worked, the punch body having a length in that direction that is twice the length from the holding part to one end; and a vibrator that is attached to a part of the punch body between the holding part and the one end, the part being rotationally symmetrical about a central axis extending through the center of the punch body in that direction, and that applies vibrations to the punch body; during press working, the vibrator applies to the punch body vibrations of an amplitude in that direction and a wavelength that is twice the length of the punch body in that direction; and during press working, the press working device applies a pressing force in that direction to the holding part, and the punch body transmits the pressing force in that direction to the material.

[0019] According to one aspect of the present invention, there is provided a die for use in press working that is attached to a press working device, and that, during press working, receives a pressing force in a first direction applied from the press working device at a holding part, and includes: a die body that is a material to be pressed and against which the material to which the force is applied is pressed; and an oscillator that is attached to the die body and applies vibrations of a predetermined wavelength and an amplitude in the first direction to the die body, wherein the length of the die body in the first direction is one-half the wavelength of the vibrations, and the length of the die body in the first direction, which is a length from the holding part to one end of the die body, is one-fourth the wavelength of the vibrations, and the shape of the die body from the holding part to the one end is formed rotationally symmetrically with respect to a central axis that extends through the center of the die body in the first direction, and the oscillator is attached to a portion of the die body between the holding part and the one end.

[0020] The holding portion may protrude from the die body in a direction intersecting the first direction.

[0021] The holding portion may be formed in a flange shape.

[0022] The die body can be formed cylindrically from the holding portion to the one end, and the vibrator can be formed in a ring shape that can be attached so as to cover a portion of the side of the die body between the holding portion and the one end of the die body.

[0023] The vibrator may be a piezoelectric element.

[0024] The die may be provided in the press working device.

[0025] According to another aspect of the present invention, there is provided a press working method using a metal die comprising: a die body, which, during press working, receives a pressing force applied in a predetermined direction from the press working device at a holding part; a die body against which the material to be press working is pressed, the die body having a length in the predetermined direction that is twice the length from the holding part to one end; and an oscillator, which is attached to a portion of the die body between the holding part and the one end, the portion being rotationally symmetrical about a central axis extending through the center of the die body in the predetermined direction, and which applies vibration to the die body; during press working, the oscillator applies to the die body vibrations of an amplitude in the predetermined direction and a wavelength that is twice the length of the die body in the predetermined direction; and during press working, the die body is held by the holding part, and the die body receives the force applied to the material from the press working device. [Effects of the Invention]

[0026] As described above, according to the present invention, it is possible to shorten the length and apply vibration to perform press working. [Brief explanation of the drawings]

[0027] [Figure 1] 1A and 1B are diagrams illustrating an example of the configuration of a punch 11. [Figure 2] 10A and 10B are diagrams illustrating an example of the configuration of a punch 61. [Figure 3]1 is a diagram showing an example of the configuration of a punch 101. FIG. [Figure 4] FIG. 2 is a diagram showing an example of the configuration of a punch 201. [Figure 5] FIG. 3 is a diagram showing an example of the configuration of a punch 301. [Figure 6] 4 is a diagram showing an example of the configuration of a punch 401. FIG. [Figure 7] FIG. 5 is a diagram showing an example of the configuration of a punch 501. [Figure 8] FIG. 7 is a diagram illustrating a die 701. [Figure 9] FIG. 7 is a diagram showing an example of the configuration of a die 701. DETAILED DESCRIPTION OF THE INVENTION

[0028] The following describes embodiments of the present invention. The correspondence between the constituent features of the present invention and the embodiments described in the Detailed Description of the Invention is exemplified as follows: This description is intended to confirm that the embodiments supporting the present invention are described in the Detailed Description of the Invention. Therefore, even if there is an embodiment described in the Detailed Description of the Invention that corresponds to a constituent feature of the present invention but is not described here, this does not mean that the embodiment does not correspond to that constituent feature. Conversely, even if an embodiment is described here as corresponding to a constituent feature, this does not mean that the embodiment does not correspond to constituent features other than the constituent feature.

[0029] A punch according to one aspect of the present invention is a punch for a die that is attached to a press processing device and used in press processing. The punch includes a punch body (e.g., punch body 21 in FIG. 1) that receives a pressing force in a first direction applied from the press processing device at a holding portion (e.g., holding portion 34 in FIG. 1) during press processing and transmits the pressing force in the first direction to a material to be press processed, and an oscillator (e.g., oscillators 22-1 to 22-4 in FIG. 1) that is attached to the punch body and applies vibrations of a predetermined wavelength and amplitude in the first direction to the punch body. The length of the punch body in the first direction is half the wavelength of the vibration, and the length of the punch body in the first direction, from the holding portion to one end of the punch body, is one-fourth the wavelength of the vibration. The shape of the punch body from the holding portion to the one end is formed rotationally symmetrical with respect to a central axis extending through the center of the punch body in the first direction. The oscillator is attached to the punch body between the holding portion and one end.

[0030] A die according to one aspect of the present invention is a die of a metal mold that is attached to a press processing device and used in press processing. During press processing, a pressing force applied in a first direction from the press processing device is received by a holding portion (e.g., holding portion 734 in FIG. 9 ). The die includes a die body (e.g., die body 721 in FIG. 9 ) that is the material to be pressed and against which the force is applied, and an oscillator (e.g., oscillators 722-1 to 722-4 in FIG. 9 ) that is attached to the die body and applies vibrations of a predetermined wavelength and amplitude in the first direction to the die body. The length of the die body in the first direction is half the wavelength of the vibration, and the length of the die body in the first direction from the holding portion to one end of the die body is one-fourth the wavelength of the vibration. The shape of the die body from the holding portion to the one end is formed rotationally symmetrical with respect to a central axis extending through the center of the die body in the first direction. The oscillator is attached to the die body between the holding portion and one end.

[0031] Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

[0032] The punch according to an embodiment of the present invention is a punch for a die used in press working. The punch according to an embodiment of the present invention is attached to a press working device and presses non-metallic materials such as ferrous materials such as steel plate, steel material, or special steel; non-ferrous metal materials such as aluminum, copper, titanium, or magnesium, or alloys thereof; and plastic materials and composite materials. The press working device may be equipped with a crank drive mechanism, a knuckle drive mechanism, or a link mechanism, or may be a mechanical press such as a servo press, or a hydraulic press. That is, the press working device may be provided with a punch for a press working die. The press working device presses metal materials by applying a pressing force, which is a pressing force, to the punch for the die.

[0033] The punch according to the embodiment of the present invention is used in press working such as shearing (including dividing and cutting), punching (including blank punching), trimming, bending, flanging, drawing, forming, compression, or joining.

[0034] A press die consists of an upper die and a lower die. For example, the upper die and the lower die are dies with die sets. The upper die is attached to the slide of the press processing device, and during press processing, it is displaced vertically by the press processing device, and the material is sandwiched between it and the lower die, pressed, and processed. The lower die is attached to the bolster plate of the press processing device, and its position is fixed during press processing. For example, the lower die is composed of a die, a base plate, a die plate, a banking plate, and a holder.

[0035] For example, the upper die includes a punch, a punch plate, a spacer, a punch holder, a stripper, and a guide pin.

[0036] The punch is displaced downward by a downward pressing force applied from a press processing device and pressed against the material to transfer the shape to the material. Alternatively, the punch is pressed against the material in a punching process to punch out the material into a desired shape. The punch plate clamps the punch, positions it, and fixes it.

[0037] The stripper removes material from the punch. The guide pin maintains the relative positions of the punch and die by entering the hole in the die when the punch is displaced downward.

[0038] The spacer maintains the positions of the punch and punch holder. The punch holder holds the entire upper die. The punch holder is attached to the slide of the press processing device with bolts or the like.

[0039] The following description will be given taking as an example a punch for a press working die used in punching.

[0040] Next, an example of the configuration of a punch 11 according to an embodiment will be described with reference to Fig. 1. Fig. 1(A) is a side view showing the configuration of the punch 11. Fig. 1(B) is a top view showing the configuration of the punch 11. Fig. 1(C) is a cross-sectional view showing the configuration of the punch 11, taken along the dashed line AA' in Fig. 1(B).

[0041] In the following description, the upper die of the press die is assumed to be displaced in the Z-axis (vertical direction), and the front-to-back direction relative to the punch 11 is illustrated as the Y-axis, the up-down direction as the Z-axis, and the left-to-right direction as the X-axis. In the following description, the left side of FIG. 1(A) in the Z-axis direction will be simply referred to as the upper side, and the right side of FIG. 1(A) in the Z-axis direction will be simply referred to as the lower side. In the following description, the front side of FIG. 1(A) in the X-axis direction will be simply referred to as the left side, and the rear side of FIG. 1(A) in the X-axis direction will be simply referred to as the right side. In the following description, the upper side of FIG. 1(A) in the Y-axis direction will be simply referred to as the front side, and the lower side of FIG. 1(A) in the Y-axis direction will be simply referred to as the rear side. In the following description, the Z-axis direction will be simply referred to as the up-down direction, the X-axis direction will be simply referred to as the left-to-right direction, and the Y-axis direction will be simply referred to as the front-to-back direction. 2 to 10, the X-axis, Y-axis, and Z-axis are illustrated in the same manner.

[0042] 1(A) and 1(C), the dashed dotted lines indicate the center of the punch 11 in the X-axis direction (left-right direction) and the center of the punch 11 in the Y-axis direction (front-rear direction). In FIG. 1(B), the dashed dotted line AA' extending along the Y-axis direction indicates the center of the punch 11 in the X-axis direction (left-right direction) on the top surface of the punch 11, and the dashed dotted line extending along the X-axis direction indicates the center of the punch 11 in the Y-axis direction (front-rear direction). Note that the point where the dashed dotted line AA' and the dashed dotted line extending along the X-axis direction intersect in FIG. 1(B) indicates the position of the dashed dotted line in FIG. 1(A) and 1(C).

[0043] The punch 11 is attached to a press working device and used for press working. The punch 11 is displaced downward by the working force of the press working device and pressed against the material, punching it into a desired shape.

[0044] The punch 11 is configured to include a punch body 21, oscillators 22-1 to 22-4, a washer 23, and a nut 24. The punch body 21 transmits a downward pressing force applied from a press processing device to the material. The oscillators 22-1 to 22-4, the washer 23, and the nut 24 are attached to the punch body 21. The oscillators 22-1 to 22-4 apply vibrations to the punch body 21. The washer 23 and the nut 24 fix the oscillators 22-1 to 22-4 to the punch body 21.

[0045] The punch body 21, the vibrators 22-1 to 22-4, the washer 23, and the nut 24 will be described in detail below.

[0046] The punch body 21 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the punch body 21 is integrally formed from a single predetermined material. For example, the punch body 21 has a constant bulk modulus. The punch body 21 is fixed to a press device and is displaced downward by a downward pressing force applied from the press device, and is pressed against a material. In other words, the punch body 21 transmits the downward pressing force to the material to be pressed.

[0047] The punch body 21 is formed with a vibrating section 31, a vibrator mounting section 32, a pressing section 33, and a holding section 34. The upper end of the punch body 21, i.e., the end on the side of the vibrating section 31 and the vibrator mounting section 32, is a fixed end 35, which is the end on the side where the vibrators 22-1 to 22-4, the washer 23, and the nut 24 are fixed. The lower end of the punch body 21, i.e., the end of the pressing section 33, is a pressing end 36 that transmits a force pressing downward to the material to be pressed. The holding section 34 is provided in the center of the punch body 21 in the Z-axis direction.

[0048] Here, the details of the excitation unit 31, the vibrator mounting unit 32, the pressing unit 33, and the holding unit 34 will be described.

[0049] The vibration generating unit 31 is formed on the upper side of the holding unit 34, is in contact with the vibrator 22-4 mounted on the vibrator mounting unit 32, and transmits the vibrations applied from the vibrators 22-1 to 22-4 to the punch body 21. The vibration generating unit 31 is formed in a cylindrical shape, and the outer diameter of the vibration generating unit 31 is equal to the outer diameters of the vibrators 22-1 to 22-4, respectively. In other words, when the vibrators 22-1 to 22-4 are mounted on the vibrator mounting unit 32, the side surfaces of the vibration generating unit 31 are flush with the side surfaces of the vibrators 22-1 to 22-4 mounted on the vibrator mounting unit 32.

[0050] The vibrator mounting section 32 is formed on the upper side of the excitation section 31 and is formed in a cylindrical shape. The vibrator mounting section 32 is passed through the inner holes of the annular vibrators 22-1 to 22-4 and the inner hole of the washer 23, and the vibrators 22-1 to 22-4 are mounted on the vibrator mounting section 32. The outer diameter of the vibrator mounting section 32 is smaller by a predetermined clearance than the diameter of the inner holes of the vibrators 22-1 to 22-4 and the diameter of the inner hole of the washer 23. A male screw thread that screws onto the nut 24 is formed on the fixed end 35 side of the vibrator mounting section 32.

[0051] The pressing part 33 is formed below the holding part 34 and transmits the force applied to the holding part 34 from the press processing device to the material to be pressed. In this case, the pressing end 36 comes into contact with the material to be pressed and is pressed against the material, cutting out the material into the desired shape.

[0052] The pressing end 36 is shaped to correspond to the shape to be obtained by press processing. For example, in the case of punching, the pressing end 36 is pressed against the material to transfer the shape to the material, thereby punching out the material into the desired shape. For example, if a square plate material is to be punched out, the pressing end 36 is formed in a square shape. For example, if a circular plate material is to be punched out, the pressing end 36 is formed in a circular shape.

[0053] The side surface of the pressing portion 33 is formed as a smooth surface between the holding portion 34 and the pressing end 36 .

[0054] During press working, the holding portion 34 receives a downward pressing force (in the Z-axis direction) applied from the press working device. The holding portion 34 protrudes from the side surfaces of the vibration unit 31 and the pressing portion 33 in the Y-axis direction and the X-axis direction, which are directions intersecting the Z-axis direction. More specifically, the holding portion 34 is formed in a flange shape that protrudes from the side surfaces of the vibration unit 31 and the pressing portion 33. When the holding portion 34 is attached to the press working device, it is sandwiched between the punch plates of the press working device, positioned, and fixed.

[0055] The holding portion 34 is formed with a flat surface 41-1 and a flat surface 41-2. The flat surface 41-1 and the flat surface 41-2 are formed on the holding portion 34 as parallel flat surfaces spaced a predetermined distance apart in the left-right direction. When the holding portion 34 is attached to a press working device and sandwiched between the punch plates of the press working device, the flat surface 41-1 and the flat surface 41-2 abut against the surface on the press working device side, thereby suppressing rotation of the punch body 21.

[0056] The holding portion 34 is not limited to a flange shape, but may be a portion that protrudes in a predetermined shape in the Y-axis direction (front-rear direction) or the X-axis direction (left-right direction), and may have an overall polygonal shape such as a triangle. Note that the holding portion 34 does not need to be formed symmetrically.

[0057] The oscillators 22-1 to 22-4 are mounted on the oscillator mounting portion 32. That is, the oscillators 22-1 to 22-4 are mounted on the punch main body 21 between the holding portion 34 and the pressing end 36, which is one end of the punch main body 21. The oscillators 22-1 to 22-4 are each formed in an annular (ring-like) shape. The oscillators 22-1 to 22-4 are formed in an annular shape that can be mounted on the oscillator mounting portion 32 so as to cover the side surface of the oscillator mounting portion 32. That is, the oscillators 22-1 to 22-4 are formed in an annular shape that can be mounted so as to cover part of the side surface of the punch main body 21 between the holding portion 34 and the fixed end 35 of the punch main body 21.

[0058] For example, the oscillators 22-1 to 22-4 have the same shape and the same vibration generation characteristics.

[0059] Each of the oscillators 22-1 to 22-4 is made of a piezoelectric element and applies vibrations of a predetermined wavelength, with the amplitude direction being the Z-axis direction, to the punch body 21 in response to an externally applied alternating voltage. The frequency of the vibrations generated by the oscillators 22-1 to 22-4 can be 20 Hz to 40 kHz, which corresponds to the audible range of sound or the ultrasonic range. The frequency of the vibrations generated by the oscillators 22-1 to 22-4 is determined by the shape of the punch 11, the speed at which the punch 11 is displaced in the vertical direction, the type of material, the shape and size to be formed, etc. The amplitude of the vibrations generated by the oscillators 22-1 to 22-4 is determined by the speed at which the punch 11 is displaced in the vertical direction, the type of material, the shape and size to be formed, etc. For example, the frequency of the vibrations generated by vibrators 22-1 to 22-4 is determined so that the speed of displacement due to the vibration in the amplitude direction (the speed of deformation of punch 11 (particularly, the speed of deformation of pressing end 36)) is faster than the speed of displacement of punch 11 in the vertical direction.

[0060] The number of oscillators 22-1 to 22-4 can be one or more as desired. For example, only oscillator 22-1 may be provided. It is also preferable to provide an even number of oscillators, such as oscillators 22-1 and 22-2 or oscillators 22-1 to 22-4.

[0061] Furthermore, the oscillators 22-1 to 22-4 may be operated by applying voltages of the same phase or different phases.

[0062] The oscillators 22-1 to 22-4 may be made of magnetostrictive material, and may be expanded and contracted by applying a magnetic field to apply vibrations whose amplitude direction is the Z-axis direction to the punch body 21. The oscillators 22-1 to 22-4 may be other types of vibration excitation devices, such as solenoids.

[0063] The washer 23 is annular and has the same shape as the vibrators 22-1 to 22-4, and is formed to have a predetermined thickness. The outer diameter of the washer 23 is equal to the outer diameter of each of the vibrators 22-1 to 22-4. The thickness of the washer 23 is adjusted so that when the nut 24 is screwed onto the thread on the fixed end 35 side of the vibrator mounting portion 32, the upper surface of the nut 24 is flush with the fixed end 35.

[0064] The nut 24 is screwed onto the male thread on the fixed end 35 side of the vibrator mounting portion 32, and presses the vibrators 22-1 to 22-4 against the excitation portion 31 with a predetermined force via the washer 23. Note that a bolt may be used instead of the nut 24.

[0065] In this way, the diameters of the vibrators 22-1 to 22-4, the washer 23, and the nut 24 are equal to the outer diameter of the excitation part 31, so the vibrator mounting part 32 to which the vibrators 22-1 to 22-4, the washer 23, and the nut 24 are mounted has a cylindrical shape.

[0066] In this way, the punch body 21 is formed in a cylindrical shape from the holding portion 34 to the fixed end 35 .

[0067] The length of the punch body 21 in the Z-axis direction is set to half the wavelength of the vibrations applied by the vibrators 22-1 to 22-4.

[0068] The length of the punch body 21 in the Z-axis direction, which is the length from the holding portion 34 to the fixed end 35 that is one end of the punch body 21, is set to one-fourth of the wavelength of the vibration applied by the oscillators 22-1 to 22-4. More specifically, the length of the punch body 21 in the Z-axis direction, which is the length from the upper surface of the holding portion 34 to the fixed end 35, is set to one-fourth of the wavelength of the vibration applied by the oscillators 22-1 to 22-4.

[0069] Furthermore, the shapes of the excitation section 31 and the vibrator mounting section 32 are formed to be rotationally symmetrical with respect to a central axis extending in the Z-axis direction through the center of the punch body 21. That is, the shape of the punch body 21 from the holding section 34 to the fixed end 35, which is one end of the punch body 21, is formed to be rotationally symmetrical with respect to the central axis extending in the Z-axis direction through the center of the punch body 21.

[0070] In other words, the shapes of the excitation unit 31 and the transducer mounting unit 32 are formed symmetrically with respect to a plane defined by the Z axis and the X axis. Also, the shapes of the excitation unit 31 and the transducer mounting unit 32 are formed symmetrically with respect to a plane defined by the Z axis and the Y axis.

[0071] In this way, when the punch body 21 is vibrated by the oscillators 22-1 to 22-4, the holding portion 34 becomes the node of the vibration, and the fixed end 35 and the pressing end 36 become the antinode of the vibration. The holding portion 34 hardly moves due to the vibration, while the fixed end 35 and the pressing end 36 move significantly due to the vibration. At the same time, the absolute value of the displacement due to the vibration of the pressing end 36 is equal to the absolute value of the displacement due to the vibration of the fixed end 35, but the direction of the displacement due to the vibration of the pressing end 36 is opposite to the direction of the displacement due to the vibration of the fixed end 35. In other words, when the punch body 21 is vibrated by the oscillators 22-1 to 22-4, the punch body 21 resonates, the holding portion 34 becomes the node of the vibration, and the fixed end 35 and the pressing end 36 become the antinode of the vibration.

[0072] For example, when the frequency of the vibrations applied by the vibrators 22-1 to 22-4 is 20 kHz, the wavelength of the vibrations propagated to the punch body 21 is approximately 220 mm, taking into account the bulk modulus of elasticity of the punch body 21. In this case, the length of the punch body 21 in the Z-axis direction is set to 110 mm.

[0073] In this way, it becomes possible to make it shorter and apply vibration to perform press processing.

[0074] Next, an example of the configuration of the punch 61 according to one embodiment will be described with reference to Fig. 2. Fig. 2(A) is a side view showing the configuration of the punch 61. Fig. 2(B) is a top view showing the configuration of the punch 61. Fig. 2(C) is a cross-sectional view showing the configuration of the punch 61, taken along the dashed line AA' in Fig. 2(B).

[0075] 2(A) and 2(C), the dashed dotted lines indicate the center of the punch 61 in the X-axis direction (left-right direction) and the center of the punch 61 in the Y-axis direction (front-rear direction). In Fig. 2(B), the dashed dotted line AA' extending along the Y-axis direction indicates the center of the punch 61 in the X-axis direction (left-right direction) on the top surface of the punch 61, and the dashed dotted line extending along the X-axis direction indicates the center of the punch 61 in the Y-axis direction (front-rear direction). Note that the point where the dashed dotted line AA' and the dashed dotted line extending along the X-axis direction intersect in Fig. 2(B) indicates the position of the dashed dotted lines in Figs. 2(A) and 2(C).

[0076] The punch 61 is attached to a press working device and used for press working. The punch 61 is displaced downward by the working force of the press working device and pressed against the material, punching it into a desired shape.

[0077] The punch 61 is configured to include a punch main body 71, vibrators 72-1 to 72-4, a washer 73, and a nut 74. The vibrators 72-1 to 72-4, the washer 73, and the nut 74 are similar to the vibrators 22-1 to 22-4, the washer 23, and the nut 24, respectively, described with reference to FIG.

[0078] The punch body 71 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the punch body 71 is integrally formed from a single predetermined material. For example, the bulk modulus of the punch body 71 is constant. The punch body 71 is fixed to a press device and is displaced downward by a downward pressing force applied from the press device, and is pressed against the material. In other words, the punch body 71 transmits the downward pressing force to the material to be pressed.

[0079] The punch body 71 is formed with a vibrating section 81, a vibrator mounting section 82, a pressing section 83, and a holding section 84. The vibrating section 81, the vibrator mounting section 82, the pressing section 83, and the holding section 84 are similar to the vibrating section 31, the vibrator mounting section 32, the pressing section 33, and the holding section 34, respectively, described with reference to Fig. 1, and therefore their description will be omitted. Note that the fixed end 85 and the pressing end 86 are similar to the fixed end 35 and the pressing end 36, respectively, and therefore their description will be omitted.

[0080] It should be noted that flat surface portions 91-1 and 91-2 are formed on the holding portion 84. The flat surface portions 91-1 and 91-2 are similar to the flat surface portions 41-1 and 41-2, respectively, and therefore a description thereof will be omitted.

[0081] Furthermore, a hole 92 is formed in the punch body 71. The hole 92 is a hole that communicates from the fixed end 85 to the pressing end 86 and extends through the center of the punch body 71 in the Z-axis direction. That is, the hole 92 passes through the center of the punch body 71 in the X-axis direction (left-right direction) and the Y-axis direction (front-back direction). The hole 92 is a hole for passing air.

[0082] The material punched out by the press working can be dropped by introducing air from the opening on the fixed end 85 side of the hole 92 and blowing out the air from the opening on the pressing end 86 side of the hole 92. In addition, by passing air through the hole 92, the punch body 71 can be cooled.

[0083] Next, an example of the configuration of the punch 101 according to one embodiment will be described with reference to Fig. 3. Fig. 3(A) is a side view showing the configuration of the punch 101. Fig. 3(B) is a top view showing the configuration of the punch 101. Fig. 3(C) is a cross-sectional view showing the configuration of the punch 101, taken along the dashed line AA' in Fig. 3(B).

[0084] 3(A) and 3(C), the dashed dotted lines indicate the center of the punch 101 in the X-axis direction (left-right direction) and the center of the punch 101 in the Y-axis direction (front-rear direction). In FIG. 3(B), the dashed dotted line AA' extending along the Y-axis direction indicates the center of the punch 101 in the X-axis direction (left-right direction) on the top surface of the punch 101, and the dashed dotted line extending along the X-axis direction indicates the center of the punch 101 in the Y-axis direction (front-rear direction). Note that the points where the dashed dotted lines AA' and the X-axis direction intersect in FIG. 3(B) indicate the positions of the dashed dotted lines in FIG. 3(A) and 3(C).

[0085] The punch 101 is attached to a press processing device and used for press processing. The punch 101 is displaced downward by the processing force of the press processing device and pressed against the material, punching it into a desired shape.

[0086] The punch 101 is configured to include a punch body 121, vibrators 122-1 to 122-4, a washer 123, and a nut 124. The vibrators 122-1 to 122-4, the washer 123, and the nut 124 are similar to the vibrators 22-1 to 22-4, the washer 23, and the nut 24, respectively, described with reference to FIG.

[0087] The punch body 121 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the punch body 121 is integrally formed from a single predetermined material. For example, the punch body 121 has a constant bulk modulus. The punch body 121 is fixed to a press device and is displaced downward by a downward pressing force applied from the press device. In other words, the punch body 121 transmits the downward pressing force to the material to be pressed.

[0088] Punch body 121 is formed with a vibrating section 131, a vibrator mounting section 132, a pressing section 133, and a holding section 134. Vibrating section 131, vibrator mounting section 132, pressing section 133, and holding section 134 are similar to vibrating section 31, vibrator mounting section 32, pressing section 33, and holding section 34, respectively, described with reference to FIG. 1, and therefore their description will be omitted. Fixed end 135 and pressing end 136 are similar to fixed end 35 and pressing end 36, respectively, and therefore their description will be omitted. Furthermore, pressing end 136 of pressing section 133 does not come into contact with the material to be pressed, and a punch tip member 151, described later, is pressed against the material to punch out the material into the desired shape.

[0089] Planar portions 141-1 and 141-2 are formed on the holding portion 134. The planar portions 141-1 and 141-2 are similar to the planar portions 41-1 and 41-2, respectively, and therefore will not be described further.

[0090] Furthermore, holes 142 and 143 are formed in the punch body 121. Hole 142 is formed on the pressing end 136 side of the punch body 121 and extends in the Z-axis direction through the center of the punch body 121. Hole 143 is formed on the fixed end 135 side of the punch body 121 and extends in the Z-axis direction through the center of the punch body 121. Hole 143 is a so-called round hole. Hole 142 and hole 143 are in communication with each other. It can also be said that hole 142 and hole 143 are in communication with each other from the fixed end 135 to the pressing end 136.

[0091] A punch tip member 151, which will be described later, is inserted into the hole 142. The shape of the hole 142 corresponds to the shape of the punch tip member 151. A female screw thread is formed in the portion of the hole 142 that is closer to the center of the punch body 121. A bolt 152 is passed through the hole 143.

[0092] The punch tip member 151 is detachably attached to the pressing end 136 of the punch body 121, and comes into contact with the material and presses the material downward (in the Z-axis direction) during press working. The punch tip member 151 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. The upper side of the punch tip member 151 is inserted into the hole 142 of the punch body 121 and fixed therein.

[0093] Punch tip member 151 is formed with a screw fastening portion 161, an insertion portion 162, and a pressing portion 163. The upper end of punch tip member 151, i.e., the end of punch tip member 151 that is inserted into hole 142, is fixed to punch body 121 and serves as fixed end 171, which is the end that transmits vibrations from punch body 121. The lower end of punch tip member 151, i.e., the end that protrudes downward from punch body 121 when punch tip member 151 is attached to punch body 121, serves as pressing end 172 that transmits a force that presses the material that is the target of press working in the downward direction (Z-axis direction).

[0094] The screw fastening portion 161 is formed on the fixed end 171 side of the punch tip member 151. The screw fastening portion 161 is formed with a male thread that screws into the female thread of the hole 142. Furthermore, a female thread for screwing into the bolt 152 is formed in the center (the center in the X-axis direction and the center in the Y-axis direction) of the surface of the screw fastening portion 161 on the fixed end 171 side.

[0095] The insertion portion 162 is formed below the screw fastening portion 161 and in the center of the punch tip member 151 in the Z-axis direction. The insertion portion 162 has an outer diameter that is the same as the outer diameter of the screw fastening portion 161 or is larger than the outer diameter of the screw fastening portion 161 by the amount of the thread that the screw fastening portion 161 cuts. The insertion portion 162 is inserted into the hole 142 when the punch tip member 151 is attached to the pressing end 136 of the punch body 121.

[0096] The pressing portion 163 is formed below the insertion portion 162, on the pressing end 172 side of the punch tip member 151. When the punch tip member 151 is attached to the punch body 121, the pressing portion 163 protrudes downward from the punch body 121. The pressing portion 163 transmits the force applied to the punch body 121 from the press processing device to the material that is the target of press processing. In this case, the pressing end 172 comes into contact with the material that is the target of press processing and is pressed against the material, punching out the material into the desired shape.

[0097] The pressing end 172 has a shape corresponding to the shape to be obtained by press processing. For example, in the case of punching, the pressing end 172 is pressed against the material to transfer the shape to the material, thereby punching out the material into the desired shape. For example, if a square plate material is to be punched out, the pressing end 172 is formed in a square shape. For example, if a circular plate material is to be punched out, the pressing end 172 is formed in a circular shape.

[0098] The bolt 152 is passed through the hole 143 of the punch body 121 and is screwed into the female thread of the fixed end 171 of the punch tip member 151. The diameters of the screw fastening portion 161 and the insertion portion 162 of the punch tip member 151 are larger than the diameter of the bolt 152.

[0099] This allows for easy replacement of punch tip member 151. Punch tip member 151 is screwed into the female thread of hole 142 by screw fastening portion 161, and can therefore be firmly fixed to punch body 121. Furthermore, bolt 152 is passed through hole 143 of punch body 121 and screwed into the female thread of fixed end 171 of screw fastening portion 161, and therefore tension can be applied to punch tip member 151 by tightening bolt 152. This makes it easier for vibration applied to punch body 121 to be transmitted to punch tip member 151.

[0100] Next, an example of the configuration of the punch 201 according to one embodiment will be described with reference to Fig. 4. Fig. 4(A) is a side view showing the configuration of the punch 201. Fig. 4(B) is a top view showing the configuration of the punch 201. Fig. 4(C) is a cross-sectional view showing the configuration of the punch 201, taken along the dashed line AA' in Fig. 4(B).

[0101] 4(A) and 4(C), the dashed dotted lines indicate the center of the punch 201 in the X-axis direction (left-right direction) and the center of the punch 201 in the Y-axis direction (front-rear direction). In Fig. 4(B), the dashed dotted line AA' extending along the Y-axis direction indicates the center of the punch 201 in the X-axis direction (left-right direction) on the top surface of the punch 201, and the dashed dotted line extending along the X-axis direction indicates the center of the punch 201 in the Y-axis direction (front-rear direction). Note that the points where the dashed dotted lines AA' and the X-axis direction intersect in Fig. 4(B) indicate the positions of the dashed dotted lines in Figs. 4(A) and 4(C).

[0102] The punch 201 is attached to a press processing device and used for press processing. The punch 201 is displaced downward by the processing force of the press processing device and pressed against the material, punching it into a desired shape.

[0103] The punch 201 is configured to include a punch body 221, vibrators 222-1 to 222-4, a washer 223, and a nut 224. The vibrators 222-1 to 222-4, the washer 223, and the nut 224 are similar to the vibrators 22-1 to 22-4, the washer 23, and the nut 24, respectively, described with reference to FIG.

[0104] The punch body 221 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the punch body 221 is integrally formed from a single predetermined material. For example, the punch body 221 has a constant bulk modulus. The punch body 221 is fixed to a press device and is displaced downward by a downward pressing force applied from the press device. In other words, the punch body 221 transmits the downward pressing force to the material to be pressed.

[0105] Punch body 221 is formed with a vibrating section 231, a vibrator mounting section 232, a pressing section 233, and a holding section 234. Vibrating section 231, vibrator mounting section 232, pressing section 233, and holding section 234 are similar to vibrating section 31, vibrator mounting section 32, pressing section 33, and holding section 34, respectively, described with reference to FIG. 1, and therefore their description will be omitted. Fixed end 235 and pressing end 236 are similar to fixed end 35 and pressing end 36, respectively, and therefore their description will be omitted. Furthermore, pressing end 236 of pressing section 233 does not come into contact with the material to be pressed, and a punch tip member 251, described later, is pressed against the material to punch out the material into the desired shape.

[0106] Planar portions 241-1 and 241-2 are formed on the holding portion 234. Planar portions 241-1 and 241-2 are similar to planar portions 41-1 and 41-2, respectively, and therefore will not be described further.

[0107] Furthermore, holes 242 and 243 are formed in the punch body 221. Hole 242 is formed on the pressing end 236 side of the punch body 221 and extends in the Z-axis direction through the center of the punch body 221. Hole 242 is a so-called round hole. Hole 243 is formed on the fixed end 235 side of the punch body 221 and extends in the Z-axis direction through the center of the punch body 221. Hole 243 is a so-called round hole. Hole 242 and hole 243 are in communication with each other. It can also be said that hole 242 and hole 243 are in communication with each other from the fixed end 235 to the pressing end 236.

[0108] A punch tip member 251, which will be described later, is inserted into the hole 242. The shape of the hole 242 corresponds to the shape of the punch tip member 251. A bolt 252 is passed through the hole 243.

[0109] The punch tip member 251 is detachably attached to the pressing end 236 of the punch body 221, and comes into contact with the material and presses the material downward (in the Z-axis direction) during press working. The punch tip member 251 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. The upper side of the punch tip member 251 is inserted into and fixed in the hole 242 of the punch body 221.

[0110] Punch tip member 251 is formed with an insertion portion 261 and a pressing portion 262. The upper end of punch tip member 251, i.e., the end of punch tip member 251 that is inserted into hole 242, is fixed to punch body 221 and serves as a fixed end 271 that is the end that transmits vibrations from punch body 221. The lower end of punch tip member 251, i.e., the end that protrudes downward from punch body 221 when punch tip member 251 is attached to punch body 221, serves as a pressing end 272 that transmits a force that presses downward (in the Z-axis direction) on the material that is the target of press working.

[0111] The insertion portion 261 is formed on the fixed end 271 side of the punch tip member 251. When the punch tip member 251 is attached to the pressing end 236 of the punch body 221, the insertion portion 261 is inserted into the hole 242. Furthermore, an internal thread for threading onto the bolt 252 is formed in the center (the center in the X-axis direction and the center in the Y-axis direction) of the surface of the insertion portion 261 on the fixed end 271 side.

[0112] The pressing portion 262 is formed on the pressing end 272 side of the punch tip member 251. When the punch tip member 251 is attached to the punch body 221, the pressing portion 262 protrudes downward from the punch body 221. The pressing portion 262 transmits the force applied to the punch body 221 from the press processing device to the material that is the target of press processing. In this case, the pressing end 272 comes into contact with the material that is the target of press processing and is pressed against the material, thereby punching out the material into the desired shape.

[0113] The pressing end 272 is shaped to correspond to the shape to be obtained by press processing. For example, in the case of punching, the pressing end 272 is pressed against the material to transfer the shape to the material, thereby punching out the material into the desired shape. For example, if a square plate material is to be punched out, the pressing end 272 is formed in a square shape. For example, if a circular plate material is to be punched out, the pressing end 272 is formed in a circular shape.

[0114] The bolt 252 is passed through the hole 243 of the punch body 221 and is screwed into the female thread of the fixed end 271 of the punch tip member 251. The diameter of the insertion portion 261 of the punch tip member 251 is larger than the diameter of the bolt 252.

[0115] This allows for easy replacement of the punch tip member 251. The bolt 252 is passed through the hole 243 of the punch body 221 and is threaded into the female thread of the fixed end 271 of the insertion portion 261, so that by tightening the bolt 252, the punch tip member 251 can be firmly fixed to the punch body 221 while tension is applied to the punch tip member 251. This makes it easier for vibrations applied to the punch body 221 to be transmitted to the punch tip member 251.

[0116] Next, an example of the configuration of punch 301 according to one embodiment will be described with reference to Fig. 5. Fig. 5(A) is a side view showing the configuration of punch 301. Fig. 5(B) is a top view showing the configuration of punch 301. Fig. 5(C) is a cross-sectional view showing the configuration of punch 301, taken along the dashed line AA' in Fig. 5(B).

[0117] 5(A) and 5(C), the dashed dotted lines indicate the center of punch 301 in the X-axis direction (left-right direction) and the center of punch 301 in the Y-axis direction (front-rear direction). In Fig. 5(B), line AA' indicated by a dashed dotted line extending along the Y-axis direction indicates the center of punch 301 in the X-axis direction (left-right direction) on the top surface of punch 301, and the dashed dotted line extending along the X-axis direction indicates the center of punch 301 in the Y-axis direction (front-rear direction). Note that the points where line AA' and the dashed dotted line extending along the X-axis direction intersect in Fig. 5(B) indicate the positions of the dashed dotted lines in Figs. 5(A) and 5(C).

[0118] The punch 301 is attached to a press processing device and used for press processing. The punch 301 is displaced downward by the processing force of the press processing device and pressed against the material, punching it into a desired shape.

[0119] Punch 301 is configured to include punch body 321, vibrators 322-1 to 322-4, washer 323, and nut 324. Vibrators 322-1 to 322-4, washer 323, and nut 324 are similar to vibrators 22-1 to 22-4, washer 23, and nut 24, respectively, described with reference to FIG. 1, and therefore description thereof will be omitted.

[0120] The punch body 321 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the punch body 321 is integrally formed from a single predetermined material. For example, the punch body 321 has a constant bulk modulus. The punch body 321 is fixed to a press device and is displaced downward by a downward pressing force applied from the press device. In other words, the punch body 321 transmits the downward pressing force to the material to be pressed.

[0121] Punch body 321 is formed with a vibrating section 331, a vibrator mounting section 332, a pressing section 333, and a holding section 334. Vibrating section 331, vibrator mounting section 332, pressing section 333, and holding section 334 are similar to vibrating section 31, vibrator mounting section 32, pressing section 33, and holding section 34, respectively, described with reference to FIG. 1, and therefore their description will be omitted. Fixed end 335 and pressing end 336 are similar to fixed end 35 and pressing end 36, respectively, and therefore their description will be omitted. Pressing end 336 of pressing section 333 does not come into contact with the material to be pressed, and punch tip member 351, described later, is pressed against the material to punch out the material into the desired shape.

[0122] Planar portions 341-1 and 341-2 are formed on the holding portion 334. Planar portions 341-1 and 341-2 are similar to planar portions 41-1 and 41-2, respectively, and therefore will not be described further.

[0123] Furthermore, a hole 342 is formed in the punch body 321. The hole 342 is formed on the pressing end 336 side of the punch body 321, and extends through the center of the punch body 321 in the Z-axis direction.

[0124] A punch tip member 351, which will be described later, is inserted into the hole 342. The shape of the hole 342 corresponds to the shape of the punch tip member 351. A female screw thread is formed in the portion of the hole 342 that is closer to the center of the punch body 321.

[0125] Punch tip member 351 is detachably attached to pressing end 336 of punch body 321, and comes into contact with the material and presses the material downward (in the Z-axis direction) during press working. Punch tip member 351 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. The upper side of punch tip member 351 is inserted into hole 342 of punch body 321 and fixed.

[0126] Punch tip member 351 is formed with a screw fastening portion 361, an insertion portion 362, and a pressing portion 363. The upper end of punch tip member 351, i.e., the end of punch tip member 351 that is inserted into hole 342, is fixed to punch body 321 and serves as fixed end 371, which is the end that transmits vibrations from punch body 321. The lower end of punch tip member 351, i.e., the end that protrudes downward from punch body 321 when punch tip member 351 is attached to punch body 321, serves as pressing end 372 that transmits a force that presses downward (in the Z-axis direction) on the material that is the target of press working.

[0127] The screw fastening portion 361 is formed on the fixed end 371 side of the punch tip member 351. The screw fastening portion 361 has an external thread that screws into the internal thread of the hole 342.

[0128] The insertion portion 362 is formed below the screw fastening portion 361 and in the center of the punch tip member 351 in the Z-axis direction. The insertion portion 362 has an outer diameter that is the same as the outer diameter of the screw fastening portion 361 or is larger than the outer diameter of the screw fastening portion 361 by the amount of the thread cut by the screw fastening portion 361. The insertion portion 362 is inserted into the hole 342 when the punch tip member 351 is attached to the pressing end 336 of the punch body 321.

[0129] The pressing portion 363 is formed below the insertion portion 362, on the pressing end 372 side of the punch tip member 351. When the punch tip member 351 is attached to the punch body 321, the pressing portion 363 protrudes downward from the punch body 321. The pressing portion 363 transmits the force applied to the punch body 321 from the press processing device to the material to be pressed. In this case, the pressing end 372 comes into contact with the material to be pressed and is pressed against the material, punching out the material into the desired shape.

[0130] The pressing end 372 has a shape corresponding to the shape to be obtained by press processing. For example, in the case of punching, the pressing end 372 is pressed against the material to transfer the shape to the material, thereby punching out the material into the desired shape. For example, if a square plate material is to be punched out, the pressing end 372 is formed in a square shape. For example, if a circular plate material is to be punched out, the pressing end 372 is formed in a circular shape.

[0131] This makes it possible to easily replace punch tip member 351. Punch tip member 351 is screwed into the female thread of hole 342 by screw fastening portion 361, and therefore can be firmly fixed to punch body 321.

[0132] Next, an example of the configuration of punch 401 according to one embodiment will be described with reference to Fig. 6. Fig. 6(A) is a side view showing the configuration of punch 401. Fig. 6(B) is a top view showing the configuration of punch 401. Fig. 6(C) is a cross-sectional view showing the configuration of punch 401, taken along the dashed line AA' in Fig. 6(B).

[0133] 6(A) and 6(C), the dashed dotted lines indicate the center of punch 401 in the X-axis direction (left-right direction) and the center of punch 401 in the Y-axis direction (front-rear direction). In Fig. 6(B), line AA' indicated by a dashed dotted line extending along the Y-axis direction indicates the center of punch 401 in the X-axis direction (left-right direction) on the top surface of punch 401, and the dashed dotted line extending along the X-axis direction indicates the center of punch 401 in the Y-axis direction (front-rear direction). Note that the point where line AA' and the dashed dotted line extending along the X-axis direction intersect in Fig. 6(B) indicates the position of the dashed dotted lines in Figs. 6(A) and 6(C).

[0134] The punch 401 is attached to a press processing device and used for press processing. The punch 401 is displaced downward by the processing force of the press processing device and pressed against the material, punching it into a desired shape.

[0135] Punch 401 is configured to include punch main body 421, vibrators 422-1 to 422-4, washer 423, and nut 424. Vibrators 422-1 to 422-4, washer 423, and nut 424 are similar to vibrators 22-1 to 22-4, washer 23, and nut 24, respectively, described with reference to FIG. 1, and therefore description thereof will be omitted.

[0136] The punch body 421 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the punch body 421 is integrally formed from a single predetermined material. For example, the punch body 421 has a constant bulk modulus. The punch body 421 is fixed to a press device and is displaced downward by a downward pressing force applied from the press device. In other words, the punch body 421 transmits the downward pressing force to the material to be pressed.

[0137] Punch body 421 is formed with a vibrating section 431, a vibrator mounting section 432, a pressing section 433, and a holding section 434. Vibrating section 431, vibrator mounting section 432, pressing section 433, and holding section 434 are similar to vibrating section 31, vibrator mounting section 32, pressing section 33, and holding section 34, respectively, described with reference to FIG. 1, and therefore their description will be omitted. Fixed end 435 and pressing end 436 are similar to fixed end 35 and pressing end 36, respectively, and therefore their description will be omitted. Furthermore, pressing end 436 of pressing section 433 does not come into contact with the material to be pressed, and punch tip member 451, described later, is pressed against the material to punch out the material into the desired shape.

[0138] Planar portions 441-1 and 441-2 are formed on holding portion 434. Planar portions 441-1 and 441-2 are similar to planar portions 41-1 and 41-2, respectively, and therefore will not be described further.

[0139] Furthermore, holes 442 and 443 are formed in punch body 421. Hole 442 is a hole that communicates from fixed end 435 to hole 443 and extends through the center of punch body 421 in the Z-axis direction. That is, hole 442 passes through the center of punch body 421 in the X-axis direction (left-right direction) and the Y-axis direction (front-rear direction). Hole 442 is a hole for passing air. Hole 442 is a so-called round hole.

[0140] Hole 443 is a hole formed on the pressing end 436 side of punch body 421, and extends in the Z-axis direction through the center of punch body 421. Hole 443 is similar to hole 142 of punch body 121 described with reference to Figure 3, so its description will be omitted.

[0141] Punch tip member 451 is detachably attached to pressing end 436 of punch body 421, and comes into contact with the material and presses the material downward (in the Z-axis direction) during press working. Punch tip member 451 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. The upper side of punch tip member 451 is inserted into hole 443 of punch body 421 and fixed.

[0142] A screw fastening portion 461, an insertion portion 462, and a pressing portion 463 are formed on punch tip member 451. Screw fastening portion 461, insertion portion 462, and pressing portion 463 are similar to screw fastening portion 161, insertion portion 162, and pressing portion 163 of punch tip member 151, respectively, described with reference to Figure 3, and therefore description thereof will be omitted.

[0143] The upper end of punch tip member 451, i.e., the end of punch tip member 451 that is inserted into hole 443, is fixed to punch body 421 and serves as fixed end 471, which is the end that transmits vibrations from punch body 421. The lower end of punch tip member 451, i.e., the end that protrudes downward from punch body 421 when punch tip member 451 is attached to punch body 421, serves as pressing end 472 that transmits a force that presses the material that is the target of press working in the downward direction (Z-axis direction). Fixed end 471 and pressing end 472 are similar to fixed end 171 and pressing end 172, respectively, of punch tip member 151 described with reference to FIG. 3, and therefore their description will be omitted.

[0144] Furthermore, a hole 481 is formed in punch tip member 451. Hole 481 is a hole that communicates from fixed end 471 to pressing end 472 and extends through the center of punch tip member 451 in the Z-axis direction. That is, hole 481 passes through the center of punch tip member 451 in the X-axis direction (left-right direction) and the center of punch tip member 451 in the Y-axis direction (front-back direction). Hole 481 is a hole for letting air pass through.

[0145] When punch tip member 451 is attached to pressing end 436 of punch body 421, hole 481 communicates with hole 442. For example, holes 481 and 442 are circular holes with the same diameter.

[0146] The punched material can be dropped by introducing air from the opening of hole 442 on the fixed end 435 side and blowing air out from the opening of hole 481 on the pressing end 472 side. In addition, by passing air through holes 442 and 481, punch body 421 and punch tip member 451 can be cooled.

[0147] Next, an example of the configuration of a punch 501 according to one embodiment will be described with reference to Fig. 7. Fig. 7(A) is a side view showing the configuration of the punch 501. Fig. 7(B) is a top view showing the configuration of the punch 501. Fig. 7(C) is a cross-sectional view showing the configuration of the punch 501, taken along the dashed line AA' in Fig. 7(B).

[0148] 7(A) and 7(C), the dashed dotted lines indicate the center of the punch 501 in the X-axis direction (left-right direction) and the center of the punch 501 in the Y-axis direction (front-rear direction). In Fig. 7(B), the dashed dotted line AA' extending along the Y-axis direction indicates the center of the punch 501 in the X-axis direction (left-right direction) on the top surface of the punch 501, and the dashed dotted line extending along the X-axis direction indicates the center of the punch 501 in the Y-axis direction (front-rear direction). Note that the point in Fig. 7(B) where the dashed dotted line AA' and the dashed dotted line extending along the X-axis direction intersect indicates the position of the dashed dotted lines in Figs. 7(A) and 7(C).

[0149] The punch 501 is attached to a press processing device and used for press processing. The punch 501 is displaced downward by the processing force of the press processing device and pressed against the material, punching it into a desired shape.

[0150] Punch 501 is configured to include punch main body 521, vibrators 522-1 to 522-4, washer 523, and nut 524. Vibrators 522-1 to 522-4, washer 523, and nut 524 are similar to vibrators 22-1 to 22-4, washer 23, and nut 24, respectively, described with reference to FIG. 1, and therefore description thereof will be omitted.

[0151] The punch body 521 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the punch body 521 is integrally formed from a single predetermined material. For example, the punch body 521 has a constant bulk modulus. The punch body 521 is fixed to a press device and is displaced downward by a downward pressing force applied from the press device. In other words, the punch body 521 transmits the downward pressing force to the material to be pressed.

[0152] Punch body 521 is formed with a vibrating section 531, a vibrator mounting section 532, a pressing section 533, and a holding section 534. Vibrating section 531, vibrator mounting section 532, pressing section 533, and holding section 534 are similar to vibrating section 31, vibrator mounting section 32, pressing section 33, and holding section 34, respectively, described with reference to FIG. 1, and therefore their description will be omitted. Fixed end 535 and pressing end 536 are similar to fixed end 35 and pressing end 36, respectively, and therefore their description will be omitted. Pressing end 536 of pressing section 533 does not come into contact with the material to be pressed, and punch tip member 551, described later, is pressed against the material to punch out the material into the desired shape.

[0153] Planar portions 541-1 and 541-2 are formed on the holding portion 534. Planar portions 541-1 and 541-2 are similar to planar portions 41-1 and 41-2, respectively, and therefore will not be described further.

[0154] Furthermore, holes 542 and 543 are formed in the punch body 521. Hole 542 is formed on the pressing end 536 side of the punch body 521 and extends through the center of the punch body 521 in the Z-axis direction. Hole 542 is similar to hole 142 of punch body 121 described with reference to FIG. 3 , and therefore its description will be omitted. Hole 543 is formed on the fixed end 535 side of the punch body 521 and extends through the center of the punch body 521 in the Z-axis direction. Hole 543 is a so-called round hole. Hole 542 and hole 543 are in communication with each other. It can also be said that hole 542 and hole 543 are in communication from the fixed end 535 to the pressing end 536.

[0155] Punch tip member 551 is detachably attached to pressing end 536 of punch body 521, and comes into contact with the material and presses the material downward (in the Z-axis direction) during press working. Punch tip member 551 is formed from a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. The upper side of punch tip member 551 is inserted into hole 542 of punch body 521 and fixed.

[0156] Punch tip member 551 is formed with a screw-fastening portion 561, an insertion portion 562, and a pressing portion 563. Screw-fastening portion 561, insertion portion 562, and pressing portion 563 are similar to screw-fastening portion 161, insertion portion 162, and pressing portion 163 of punch tip member 151, respectively, as described with reference to FIG. 3, and therefore will not be described again. The upper end of punch tip member 551, i.e., the end of punch tip member 551 that is inserted into hole 542, is fixed to punch body 521 and serves as fixed end 571, which is the end that transmits vibrations from punch body 521. The lower end of punch tip member 551, i.e., the end that protrudes downward from punch body 521 when punch tip member 551 is attached to punch body 521, serves as pressing end 572 that transmits a force pressing downward (in the Z-axis direction) to the material to be press-formed. The fixed end 571 and the pressing end 572 are similar to the fixed end 171 and the pressing end 172 of the punch tip member 151 described with reference to FIG. 3, respectively, and therefore will not be described again.

[0157] The bolt 552 is passed through the hole 543 of the punch body 521 and is screwed into the female thread of the fixed end 571 of the punch tip member 551. The diameters of the screw fastening portion 561 and the insertion portion 562 of the punch tip member 551 are larger than the diameter of the bolt 552.

[0158] Punch tip member 551 is screwed into the female thread of hole 542 by screw fastening portion 561, and can therefore be firmly fixed to punch body 521. Furthermore, bolt 552 is passed through hole 543 of punch body 521 and screwed into the female thread of fixed end 571 of screw fastening portion 561, and therefore tension can be applied to punch tip member 551 by tightening bolt 552. In this way, vibration applied to punch body 521 can be more easily transmitted to punch tip member 551.

[0159] Bolt 552 is also formed with hole 581. Hole 581 is a hole that extends through the center of bolt 552 and communicates with both ends of bolt 552 in the longitudinal direction. That is, hole 581 extends in the Z-axis direction and passes through the center of bolt 552 in the X-axis direction (left-right direction) and the center of bolt 552 in the Y-axis direction (front-rear direction). Hole 581 is a hole for passing air. Hole 581 is a so-called round hole.

[0160] Furthermore, a hole 582 is formed in punch tip member 551. Hole 582 is a hole that communicates from fixed end 571 to pressing end 572 and extends through the center of punch tip member 551 in the Z-axis direction. That is, hole 582 passes through the center of punch tip member 551 in the X-axis direction (left-right direction) and the Y-axis direction (front-back direction). Hole 582 is a hole for passing air. Hole 582 is a so-called round hole.

[0161] When punch tip member 551 is attached to pressing end 536 of punch body 521 and bolt 552 is passed through hole 543 of punch body 521 and screwed into the female thread of fixed end 571 of screw fastening portion 561, hole 581 communicates with hole 582. For example, holes 581 and 582 are circular holes of the same diameter.

[0162] The material punched out by the press working can be dropped by introducing air from the opening of hole 581 on the side of fixed end 535 and blowing air out from the opening of hole 582 on the side of pressing end 572. In addition, by passing air through holes 581 and 582, punch body 521 and punch tip member 551 can be cooled.

[0163] The punch 11, punch 61, punch 101, punch 201, punch 301, punch 401 or punch 501 can be provided in a press processing device.

[0164] When press working is performed using punch 11, oscillators 22-1 to 22-4 apply vibrations to punch body 21 with a wavelength twice the length of punch body 21 in the Z-axis direction, and when press working, a pressing force in the Z-axis direction is applied to holder 34, and the pressing force in the Z-axis direction is transmitted to the material. The same applies when press working is performed using punch 61, punch 101, punch 201, punch 301, punch 401, or punch 501, so a description thereof will be omitted.

[0165] In this way, it becomes possible to make it shorter and apply vibration to perform press processing.

[0166] Although the press working mold has been described using a forward arrangement structure as an example, it can also be configured with a reverse arrangement structure. In this case, the die is provided in the upper mold, and punch 11, punch 61, punch 101, punch 201, punch 301, punch 401, or punch 501 is provided in the lower mold.

[0167] Furthermore, the shape of pressing end 36, pressing end 86, pressing end 136, pressing end 172, pressing end 236, pressing end 272, pressing end 336, pressing end 372, pressing end 436, pressing end 472, pressing end 536 or pressing end 572 can be any desired shape.

[0168] As mentioned above, punching is only an example, and the present invention can be applied to any press working such as trimming or bending.

[0169] The material to be pressed may be any material, such as a ferrous material, a non-ferrous metal material, or a non-metal material. Furthermore, the press die can be used with any type of press machine.

[0170] It should be noted that although it has been explained that the vibrators 22-1 to 22-4, the vibrators 72-1 to 72-4, the vibrators 122-1 to 122-4, the vibrators 222-1 to 222-4, the vibrators 322-1 to 322-4, the vibrators 422-1 to 422-4, and the vibrators 522-1 to 522-4 are each formed in an annular (ring-like) shape, this is not limiting and they may also be formed in a disk-like shape. In this case, a cylindrical hole is formed in vibrator mounting portion 32, vibrator mounting portion 82, vibrator mounting portion 132, vibrator mounting portion 232, vibrator mounting portion 332, vibrator mounting portion 432 or vibrator mounting portion 532, and disk-shaped vibrators 22-1 to 22-4, vibrators 72-1 to 72-4, vibrators 122-1 to 122-4, vibrators 222-1 to 222-4, vibrators 322-1 to 322-4, vibrators 422-1 to 422-4 or vibrators 522-1 to 522-4 are inserted into the cylindrical hole. In this case, the transducers 22-1 to 22-4, the transducers 72-1 to 72-4, the transducers 122-1 to 122-4, the transducers 222-1 to 222-4, the transducers 322-1 to 322-4, the transducers 422-1 to 422-4, or the transducers 522-1 to 522-4 can be fixed by screwing in bolts or the like.

[0171] Furthermore, it has been described that punch tip member 151, punch tip member 251, punch tip member 351, punch tip member 451 or punch tip member 551 is inserted into hole 142, hole 242, hole 342, hole 443 or hole 542 of punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521 and fixed therein, but it is not limited to this. A hole such as a female screw hole may be formed in fixed end 171, fixed end 271, fixed end 371, fixed end 471 or fixed end 571 of material 351, punch tip member 451 or punch tip member 551, and the hole may be placed over pressing end 136, pressing end 236, pressing end 336, pressing end 436 or pressing end 536 of punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521 to fix it.

[0172] In this way, punch 11, punch 61, punch 101, punch 201, punch 301, punch 401 or punch 501 according to one aspect of the present invention is attached to a press working device and used for press working.

[0173] When punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521 is pressed in the first direction, i.e., the Z-axis direction, applied from the press processing device by holding portion 34, holding portion 84, holding portion 134, holding portion 234, holding portion 334, holding portion 434 or holding portion 534, and transmits the force pressing in the first direction, i.e., the Z-axis direction, to the material that is the object of press processing.

[0174] Vibrators 22-1 to 22-4, vibrators 72-1 to 72-4, vibrators 122-1 to 122-4, vibrators 222-1 to 222-4, vibrators 322-1 to 322-4, vibrators 422-1 to 422-4, or vibrators 522-1 to 522-4 are attached to punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421, or punch body 521, and apply vibrations of a predetermined wavelength with an amplitude in the Z-axis direction, which is a first direction, to punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421, or punch body 521.

[0175] The length in the Z-axis direction (first direction) of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421, or punch body 521 is set to half the wavelength of the vibration. The length in the Z-axis direction (first direction) of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421, or punch body 521, which is the length from retaining portion 34, retaining portion 84, retaining portion 134, retaining portion 234, retaining portion 334, retaining portion 434, or retaining portion 534 to fixed end 35, fixed end 85, fixed end 135, fixed end 235, fixed end 335, fixed end 435, or fixed end 535, is set to one-fourth the wavelength of the vibration.

[0176] The shape of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521, from retaining portion 34, retaining portion 84, retaining portion 134, retaining portion 234, retaining portion 334, retaining portion 434 or retaining portion 534 to fixed end 35, fixed end 85, fixed end 135, fixed end 235, fixed end 335, fixed end 435 or fixed end 535, is formed rotationally symmetrically with respect to a central axis extending through the center of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521 in the first direction, the Z-axis direction. Vibrators 22-1 to 22-4, vibrators 72-1 to 72-4, vibrators 122-1 to 122-4, vibrators 222-1 to 222-4, vibrators 322-1 to 322-4, vibrators 422-1 to 422-4 or vibrators 522-1 to 522-4 are attached between holding portion 34, holding portion 84, holding portion 134, holding portion 234, holding portion 334, holding portion 434 or holding portion 534 and fixed end 35, fixed end 85, fixed end 135, fixed end 235, fixed end 335, fixed end 435 or fixed end 535 of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521.

[0177] The retaining portion 34, retaining portion 84, retaining portion 134, retaining portion 234, retaining portion 334, retaining portion 434, and retaining portion 534 can be protruded from the punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421, or punch body 521 in a direction intersecting the first direction, which is the Z-axis direction.

[0178] The retaining portion 34, the retaining portion 84, the retaining portion 134, the retaining portion 234, the retaining portion 334, the retaining portion 434, and the retaining portion 534 can be formed in a flange shape.

[0179] In punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521, a portion from holding portion 34, holding portion 84, holding portion 134, holding portion 234, holding portion 334, holding portion 434 or holding portion 534 to fixed end 35, fixed end 85, fixed end 135, fixed end 235, fixed end 335, fixed end 435 or fixed end 535 is formed in a cylindrical shape, and vibrators 22-1 to 22-4, vibrators 72-1 to 72-4, vibrators 122-1 to 122-4, vibrators 222-1 to 222-4, vibrators 322-1 to 322-4, vibrators 422-1 to 4 ... 4 or vibrators 522-1 to 522-4 can be formed into a ring shape that can be attached so as to cover a portion of the side of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521 between retaining portion 34, retaining portion 84, retaining portion 134, retaining portion 234, retaining portion 334, retaining portion 434 or retaining portion 534 of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521 and fixed end 35, fixed end 85, fixed end 135, fixed end 235, fixed end 335, fixed end 435 or fixed end 535.

[0180] The oscillators 22-1 to 22-4, the oscillators 72-1 to 72-4, the oscillators 122-1 to 122-4, the oscillators 222-1 to 222-4, the oscillators 322-1 to 322-4, the oscillators 422-1 to 422-4, or the oscillators 522-1 to 522-4 can be piezoelectric elements.

[0181] The punch body 71 may be provided with a hole 92 extending through the center of the punch body 71 in the Z-axis direction, which is the first direction, for passing air.

[0182] A punch tip member 151, punch tip member 251, punch tip member 351, punch tip member 451 or punch tip member 551 may be further provided which is detachably attached to the pressing end 136, pressing end 236, pressing end 336, pressing end 436 or pressing end 536, which is the other end of punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521, and which comes into contact with the material and presses the material in the first direction, the Z-axis direction, when pressing.

[0183] Punch tip member 151, punch tip member 351, punch tip member 451 or punch tip member 551 can be attached to pressing end 136, pressing end 336, pressing end 436 or pressing end 536, which is the other end of punch body 121, punch body 321, punch body 421 or punch body 521, by screwing.

[0184] Punch tip member 151, punch tip member 251 or punch tip member 551 can be screwed into hole 143, hole 243 or hole 543 extending in the Z-axis direction, which is a first direction, through the center of punch body 121, punch body 221 or punch body 521, and bolt 152, bolt 252 or bolt 552 inserted from fixed end 135, fixed end 235 or fixed end 535, which is one end of the punch body.

[0185] Bolt 552 can be provided with hole 581 extending through the center of bolt 552 in the Z-axis direction, which is a first direction, for passing air, and punch tip member 551 can be provided with hole 582 extending through the center of punch tip member 551 in the Z-axis direction, which is the first direction, and hole 582 communicating with hole 581 for passing air.

[0186] The punch 11, punch 61, punch 101, punch 201, punch 301, punch 401 or punch 501 can be provided in the press working device.

[0187] In the press working method using punch 11, punch 61, punch 101, punch 201, punch 301, punch 401 or punch 501, when press working, vibrators 22-1 to 22-4, vibrators 72-1 to 72-4, vibrators 122-1 to 122-4, vibrators 222-1 to 222-4, vibrators 322-1 to 322-4, vibrators 422-1 to 422-4 or vibrators 522-1 to 522-4 move in a direction perpendicular to the plane of the punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch When a vibration having an amplitude in the pressing direction of punch body 521, and a wavelength twice the length of punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521 in the pressing direction is applied to punch body 21, punch body 71, punch body 121, punch body 221, punch body 321, punch body 421 or punch body 521, and a force in the pressing direction is applied to holding portion 34, holding portion 84, holding portion 134, holding portion 234, holding portion 334, holding portion 434 or holding portion 534, the force in the pressing direction is transmitted to the material.

[0188] Next, a die according to an embodiment of the present invention will be described.

[0189] A die according to an embodiment of the present invention is a die for a metal mold used in press working. The die according to an embodiment of the present invention is attached to a press working device and presses non-metallic materials such as ferrous materials such as steel plate, steel material, or special steel; non-ferrous metal materials such as aluminum, copper, titanium, or magnesium, or alloys thereof; and plastic materials and composite materials. The press working device may be equipped with a crank drive mechanism, a knuckle drive mechanism, or a link mechanism, as in the case of a punch, or may be a mechanical press such as a servo press or a hydraulic press. That is, the press working device may be equipped with a die for a metal mold used in press working. The press working device performs press working by applying a pressing force to the punch of the metal mold to press the metal material, and receiving the metal material pressed by the punch with the die.

[0190] The die according to the embodiment of the present invention is used for press working such as shearing (including dividing and cutting), punching (including blank punching), trimming, bending, flanging, drawing, forming, compression, or joining.

[0191] Next, the die 701 will be described with reference to FIG. 8 . The die 701 is a tool that receives a punch. The die 701 sandwiches the material with the punch pressed by the processing force of a press machine, transferring the shape to the material and punching out the material into a desired shape. For example, the die 701 sandwiches the material with the punch 11, punch 61, punch 101, punch 201, punch 301, punch 401, or punch 501, transferring the shape to the material and punching out the material into a desired shape. For example, the die 701 sandwiches the material with a punch to which vibration is not applied, transferring the shape to the material and punching out the material into a desired shape. Note that the punch 11, punch 61, punch 101, punch 201, punch 301, punch 401, or punch 501 may sandwich the material with a die to which vibration is not applied, transferring the shape to the material and punching out the material into a desired shape.

[0192] Die 701 is fixed to the press processing device by a base plate 702, a die plate 703, a banking plate 704, and a holder 705. For example, die 701 is formed in a cylindrical shape, and is fixed to base plate 702, die plate 703, banking plate 704, and holder 705 by being inserted into holes formed in base plate 702, die plate 703, banking plate 704, and holder 705, the holes having shapes corresponding to the outer shape of die 701.

[0193] The base plate 702, die plate 703, banking plate 704, and holder 705 are stacked in this order from the top.

[0194] The die 701 is fixed by being sandwiched between the die plate 703 and the banking plate 704, and the position of the die 701 is maintained relative to the base plate 702, the die plate 703, the banking plate 704, and the holder 705. As will be described in detail later, the die 701 has a flange-shaped holding portion formed thereon, and the die plate 703 and the banking plate 704 hold the holding portion of the die 701 by sandwiching it between them. In other words, the die 701 is held by the holding portion in the vertical direction where a force is applied from the press processing device to press the material that is the object of press processing.

[0195] The upper surface of the base plate 702 is flush with the upper surface of the die 701. The lower surface of the holder 705 is flush with the lower surface of the die 701.

[0196] The base plate 702, die plate 703, banking plate 704 and holder 705 hold the die 701 and are attached to a bolster plate of the press working device by bolts or the like (not shown).

[0197] Hereinafter, a description will be given taking as an example a die for a press working metal mold used in punching.

[0198] An example of the configuration of a die 701 according to one embodiment will be described with reference to Fig. 9. Fig. 9(A) is a side view showing the configuration of the die 701. Fig. 9(B) is a bottom view showing the configuration of the die 701. Fig. 9(C) is a cross-sectional view showing the configuration of the die 701, taken along the dashed line AA' in Fig. 9(B).

[0199] 9(A) and 9(C), the dashed dotted lines indicate the center of the die 701 in the X-axis direction (left-right direction) and the center of the die 701 in the Y-axis direction (front-back direction). In FIG. 9(B), the dashed dotted line AA' extending along the Y-axis direction indicates the center of the die 701 in the X-axis direction (left-right direction) on the underside of the die 701, and the dashed dotted line extending along the X-axis direction indicates the center of the die 701 in the Y-axis direction (front-back direction). Note that the points where the dashed dotted lines AA' and the dashed dotted line extending along the X-axis direction intersect in FIG. 9(B) indicate the positions of the dashed dotted lines in FIG. 9(A) and 9(C).

[0200] The die 701 is attached to a press processing device and used for press processing. The die 701 receives a force applied to the material from the press processing device and punches the material into a desired shape.

[0201] The die 701 is configured to include a die body 721, oscillators 722-1 to 722-4, a washer 723, and a nut 724. The die body 721 is fixed to a press processing device and receives a force applied to a material from the press processing device by contacting the material. The oscillators 722-1 to 722-4, the washer 723, and the nut 724 are attached to the die body 721. The oscillators 722-1 to 722-4 apply vibration to the die body 721. The washer 723 and the nut 724 fix the oscillators 722-1 to 722-4 to the die body 721.

[0202] The die body 721, the vibrators 722-1 to 722-4, the washer 723, and the nut 724 will be described in detail below.

[0203] The die body 721 is formed of a steel material such as carbon tool steel, die steel, high-speed steel, or cemented carbide. For example, the die body 721 is integrally formed of a single predetermined material. For example, the bulk modulus of the die body 721 is constant. The die body 721 is fixed to a press processing device, and a material to which a force is applied is pressed against it. For example, a material to be pressed downward by the press processing device is pressed against the die body 721. In other words, the die body 721 is a material to be pressed, and receives the material to be pressed downward by a punch from the press processing device from below, thereby pressing the material to which a force is applied. For example, the die body 721 abuts against the lower side of the material to be pressed downward, and the material is pressed against it.

[0204] The die body 721 is formed with a vibration unit 731, a vibrator mounting unit 732, a pressing unit 733, and a holding unit 734. The lower end of the die body 721, i.e., the end on the vibration unit 731 and vibrator mounting unit 732 side, is a fixed end 735, which is the end on the side where vibrators 722-1 to 722-4, washer 723, and nut 724 are fixed. The upper end of the die body 721, i.e., the end of the pressing unit 733, is a pressing end 736 that is pressed against the material to be pressed. The holding unit 734 is provided in the center of the die body 721 in the Z-axis direction.

[0205] Here, the details of the excitation unit 731, the vibrator mounting unit 732, the pressing unit 733, and the holding unit 734 will be described.

[0206] The vibration excitation unit 731 is formed below the holding unit 734, is in contact with the vibrator 722-4 mounted on the vibrator mounting unit 732, and transmits vibrations applied from the vibrators 722-1 to 722-4 to the die main body 721. The vibration excitation unit 731 is formed in a cylindrical shape, and the outer diameter of the vibration excitation unit 731 is equal to the outer diameters of the vibrators 722-1 to 722-4. In other words, when the vibrators 722-1 to 722-4 are mounted on the vibrator mounting unit 732, the side surfaces of the vibration excitation unit 731 are flush with the side surfaces of the vibrators 722-1 to 722-4 mounted on the vibrator mounting unit 732.

[0207] The transducer mounting portion 732 is formed below the excitation portion 731 and is formed in a cylindrical shape. The transducer mounting portion 732 is passed through the inner holes of the annular transducers 722-1 to 722-4 and the inner hole of the washer 723, and the transducers 722-1 to 722-4 are mounted on the transducer mounting portion 732. The outer diameter of the transducer mounting portion 732 is smaller than the diameter of the inner holes of the transducers 722-1 to 722-4 and the diameter of the inner hole of the washer 723 by a predetermined clearance. A male screw thread that screws onto the nut 724 is formed on the fixed end 735 side of the transducer mounting portion 732.

[0208] Pressing portion 733 is formed above holding portion 734, and when the material to be pressed is pressed against pressing end 736, the pressing portion 733 transmits the force applied to pressing end 736 to holding portion 734. In this case, pressing end 736 comes into contact with the material to be pressed and is pressed against the material, cutting the material into the desired shape.

[0209] A die blade 751 is formed on the pressing end 736. More specifically, a hole 752 having a cross section corresponding to the shape to be obtained by press processing is formed on the pressing end 736, and the circumference of the hole 752 at the pressing end 736 forms the die blade 751. The scrap escape hole 753 is a hole that communicates with the hole 752. One end of the scrap escape hole 753 opens to the fixed end 735, and the other end of the scrap escape hole 753 communicates with the hole 752. The hole 752 and the scrap escape hole 753 are holes that extend through the center of the die main body 721 in the Z-axis direction. That is, the hole 752 and the scrap escape hole 753 pass through the center of the die main body 721 in the X-axis direction (left-right direction) and the Y-axis direction (front-back direction). The scrap escape hole 753 is a hole for passing scrap from which material has been removed. The diameter of the scrap escape hole 753 is larger than the diameter of the hole 752 .

[0210] The hole 752 (die blade 751) has a shape corresponding to the shape to be obtained by press processing. For example, in the case of punching, the hole 752 (die blade 751) is pressed against the material to transfer the shape to the material, thereby punching out the material into the desired shape. For example, if a square plate material is to be punched out, the hole 752 (die blade 751) is formed in a square shape. For example, if a circular plate material is to be punched out, the hole 752 (die blade 751) is formed in a circular shape.

[0211] Of the scrap escape hole 753, the fixed-end side hole 761, which is the portion from the fixed end 735 to the holding portion 734, is formed in a cylindrical shape. That is, the fixed-end side hole 761 is formed as a cylindrical hole. In this way, the shapes of the excitation portion 731 and the vibrator mounting portion 732 are formed rotationally symmetrical with respect to the central axis extending through the center of the die body 721 in the Z-axis direction. Of the scrap escape hole 753, the pressing-end side hole 762, which is the portion from the holding portion 734 to the pressing end 736, is formed in a desired shape corresponding to the cross-sectional shape of the hole 752. For example, the pressing-end side hole 762 is formed as a hole whose cross-section smoothly changes as it moves in the Z-axis direction from the cross-sectional shape of the hole 752 on the pressing end 736 side to the cylindrical fixed-end side hole 761.

[0212] The side surface of the pressing portion 733 is formed as a smooth surface between the holding portion 734 and the pressing end 736 .

[0213] During press working, the holding portion 734 receives a downward pressing force (in the Z-axis direction) applied from the press working device. The holding portion 734 protrudes from the side surface of the vibration unit 731 and the side surface of the pressing portion 733 in the Y-axis direction and the X-axis direction, which are directions intersecting the Z-axis direction. More specifically, the holding portion 734 is formed in a flange shape protruding from the side surface of the vibration unit 731 and the side surface of the pressing portion 733. When attached to the press working device, the holding portion 734 is sandwiched between the die plate 703 and the banking plate 704, where it is positioned and fixed.

[0214] The holding portion 734 is formed with a flat surface 741-1 and a flat surface 741-2. The flat surface 741-1 and the flat surface 741-2 are formed on the holding portion 734 as parallel flat surfaces spaced a predetermined distance apart in the left-right direction. When the holding portion 734 is attached to a press processing device and sandwiched between the die plate 703 and the banking plate 704, the flat surface 741-1 and the flat surface 741-2 abut against the surface of the die plate 703, thereby suppressing rotation of the die body 721.

[0215] The holding portion 734 is not limited to a flange shape, but may be a portion that protrudes in a predetermined shape in the Y-axis direction (front-rear direction) or the X-axis direction (left-right direction), and may have an overall polygonal shape such as a triangle. Note that the holding portion 734 does not need to be formed symmetrically.

[0216] The vibrators 722-1 to 722-4 are mounted on the vibrator mounting portion 732. That is, the vibrators 722-1 to 722-4 are mounted on the die main body 721 between the holding portion 734 and the pressing end 736, which is one end of the die main body 721. The vibrators 722-1 to 722-4 are each formed in an annular (ring-like) shape. The vibrators 722-1 to 722-4 are formed in an annular shape that can be mounted on the vibrator mounting portion 732 so as to cover the side surface of the vibrator mounting portion 732. That is, the vibrators 722-1 to 722-4 are formed in an annular shape that can be mounted so as to cover part of the side surface of the die main body 721 between the holding portion 734 and the fixed end 735 of the die main body 721.

[0217] For example, the oscillators 722-1 to 722-4 have the same shape and the same vibration generation characteristics.

[0218] Each of the oscillators 722-1 to 722-4 is made of a piezoelectric element and applies vibrations of a predetermined wavelength, with the amplitude direction being the Z-axis direction, to the die body 721 in response to an externally applied alternating voltage. The frequency of the vibrations generated by the oscillators 722-1 to 722-4 can be 20 Hz to 40 kHz, which corresponds to the audible range of sound or the ultrasonic range. The frequency of the vibrations generated by the oscillators 722-1 to 722-4 is determined by the shape of the die 701, the speed of vertical displacement of the opposing punch, the type of material of the die 701, the shape and size to be formed, etc. The amplitude of the vibrations generated by the oscillators 722-1 to 722-4 is determined by the speed of vertical displacement of the punch opposing the die 701, the type of material of the die 701, the shape and size to be formed, etc. For example, the frequency of the vibrations generated by vibrators 722-1 to 722-4 is determined so that the speed of displacement due to the vibration in the amplitude direction (the speed of deformation of the die 701 (particularly, the speed of deformation of the pressing end 736)) is faster than the speed of displacement in the vertical direction of the punch facing the die 701.

[0219] The number of oscillators 722-1 to 722-4 can be one or more as desired. For example, only oscillator 722-1 may be provided. It is also preferable to provide an even number of oscillators, such as oscillators 722-1 and 722-2 or oscillators 722-1 to 722-4.

[0220] Furthermore, oscillators 722-1 to 722-4 may be operated by applying voltages of the same phase or different phases.

[0221] The oscillators 722-1 to 722-4 may be made of magnetostrictive material, and may be expanded and contracted by applying a magnetic field to apply vibrations whose amplitude direction is the Z-axis direction to the die body 721. The oscillators 722-1 to 722-4 may be other types of vibration excitation devices, such as solenoids.

[0222] Washer 723 is annular and has the same shape as transducers 722-1 to 722-4, and is formed to have a predetermined thickness. The outer diameter of washer 723 is equal to the outer diameter of each of transducers 722-1 to 722-4. The thickness of washer 723 is adjusted so that when nut 724 is screwed onto the thread on the fixed end 735 side of transducer mounting portion 732, the upper surface of nut 724 is flush with fixed end 735.

[0223] Nut 724 is screwed onto the male thread on the fixed end 735 side of transducer mounting portion 732, and applies a predetermined force to press transducers 722-1 to 722-4 against excitation portion 731 via washer 723. Note that a bolt may be used instead of nut 724.

[0224] In this way, the diameters of the vibrators 722-1 to 722-4, the washer 723, and the nut 724 are equal to the outer diameter of the excitation section 731, so the vibrator mounting section 732 to which the vibrators 722-1 to 722-4, the washer 723, and the nut 724 are mounted has a cylindrical shape.

[0225] In this way, the die body 721 is formed in a cylindrical shape from the holding portion 734 to the fixed end 735 .

[0226] The length of the die body 721 in the Z-axis direction is set to half the wavelength of the vibrations applied by the vibrators 722-1 to 722-4.

[0227] The length of the die body 721 in the Z-axis direction, which is the length from the holder 734 to the fixed end 735 that is one end of the die body 721, is set to one-fourth of the wavelength of the vibration applied by the vibrators 722-1 to 722-4. More specifically, the length of the die body 721 in the Z-axis direction, which is the length from the lower surface of the holder 734 to the fixed end 735, is set to one-fourth of the wavelength of the vibration applied by the vibrators 722-1 to 722-4.

[0228] The shapes of the excitation part 731 and the vibrator mounting part 732 are formed to be rotationally symmetrical with respect to a central axis extending in the Z-axis direction through the center of the die body 721. That is, the shape of the die body 721 from the holding part 734 to the fixed end 735, which is one end of the die body 721, is formed to be rotationally symmetrical with respect to the central axis extending in the Z-axis direction through the center of the die body 721.

[0229] In other words, the shapes of the excitation unit 731 and the transducer mounting unit 732 are formed symmetrically with respect to a plane defined by the Z axis and the X axis. Also, the shapes of the excitation unit 731 and the transducer mounting unit 732 are formed symmetrically with respect to a plane defined by the Z axis and the Y axis.

[0230] In this way, when the die body 721 is vibrated by the vibrators 722-1 to 722-4, the holding portion 734 becomes a vibration node, and the fixed end 735 and the pressing end 736 become vibration antinodes. The holding portion 734 hardly moves due to the vibration, while the fixed end 735 and the pressing end 736 move significantly due to the vibration. At the same time, the absolute value of the displacement due to the vibration of the pressing end 736 is equal to the absolute value of the displacement due to the vibration of the fixed end 735, but the direction of the displacement due to the vibration of the pressing end 736 is opposite to the direction of the displacement due to the vibration of the fixed end 735. In other words, when the die body 721 is vibrated by the vibrators 722-1 to 722-4, the die body 721 resonates, the holding portion 734 becomes a vibration node, and the fixed end 735 and the pressing end 736 become vibration antinodes.

[0231] For example, when the frequency of the vibrations applied by the vibrators 722-1 to 722-4 is 20 kHz, the wavelength of the vibrations propagated to the die body 721 is approximately 220 mm, taking into account the bulk modulus of the die body 721. In this case, the length of the die body 721 in the Z-axis direction is set to 110 mm.

[0232] In this way, it becomes possible to make it shorter and apply vibration to perform press processing.

[0233] The die 701 can be provided in a press processing device.

[0234] When press processing is performed using the die 701, the vibrators 722-1 to 722-4 apply vibrations to the die body 721 with an amplitude in the Z-axis direction and a wavelength twice the length of the die body 721 in the Z-axis direction, and the die body 721 is held in the Z-axis direction by the holding portion 734, and the die body 721 receives the force applied to the material from the press processing device.

[0235] Although the press working mold has been described using a forward arrangement structure as an example, it can also be configured with a reverse arrangement structure. In this case, the die 701 is provided in the upper mold, and the punch 11, punch 61, punch 101, punch 201, punch 301, punch 401, or punch 501 is provided in the lower mold.

[0236] Additionally, the shape of the pressing end 736 can be any desired shape.

[0237] As mentioned above, punching is only an example, and the present invention can be applied to any press working such as trimming or bending.

[0238] The material to be pressed may be any material, such as a ferrous material, a non-ferrous metal material, or a non-metal material. Furthermore, the press die can be used with any type of press machine.

[0239] Although the transducers 722-1 to 722-4 have been described as being formed in an annular (ring) shape, they may also be formed in a disk shape. In this case, a cylindrical hole is formed in the transducer mounting portion 732, and the disk-shaped transducers 722-1 to 722-4 are inserted into the cylindrical hole. In this case, the transducers 722-1 to 722-4 can be fixed by screwing in a bolt, for example.

[0240] Furthermore, a tip member similar to punch tip member 151 , punch tip member 251 , punch tip member 351 , punch tip member 451 or punch tip member 551 can be detachably attached to pressing end 736 of die body 721 .

[0241] In this way, the die 701 according to one aspect of the present invention is attached to a press working device and used for press working.

[0242] During press working, die body 721 receives a pressing force applied from a press working device in the Z-axis direction, which is a first direction, at holding portion 734, and the material to be pressed is pressed against die body 721. Oscillators 722-1 to 722-4 are attached to die body 721 and apply vibrations of a predetermined wavelength with an amplitude in the Z-axis direction, which is the first direction, to die body 721.

[0243] The length of the die body 721 in the Z-axis direction, which is the first direction, is set to half the wavelength of the vibration, and the length of the die body 721 in the Z-axis direction, which is the first direction, from the holder 734 to the fixed end 735, which is one end of the die body 721, is set to one-fourth the wavelength of the vibration. The shape of the die body 721 from the holder 734 to the fixed end 735, which is one end, is formed to be rotationally symmetrical with respect to a central axis extending through the center of the die body 721 in the Z-axis direction, which is the first direction. The oscillators 722-1 to 722-4 are attached to the die body 721 between the holder 734 and the fixed end 735, which is one end.

[0244] The holding portion 734 can be protruded from the die body 721 in a direction intersecting the Z-axis direction, which is the first direction.

[0245] The retaining portion 734 may be formed in the shape of a flange.

[0246] The die body 721 can be formed cylindrically from the holding portion 734 to the fixed end 735, which is one end, and the vibrators 722-1 to 722-4 can be formed into an annular shape that can be attached so as to cover a portion of the side of the die body 721 between the holding portion 734 of the die body 721 and the fixed end 735, which is one end.

[0247] The oscillators 722-1 to 722-4 can be piezoelectric elements.

[0248] The die 701 can be provided in a press machine.

[0249] In the press processing method using the die 701, when press processing is performed, the vibrators 722-1 to 722-4 apply vibrations to the die body 721 with an amplitude in the pressing direction, which is the length of the die body 721 and has a wavelength twice the length of the pressing direction, and when press processing is performed, the die body 721 is held by the holding part 734 in the direction of the pressing force, and the die body 721 receives the force applied to the material from the press processing device.

[0250] Furthermore, the embodiments of the present invention are not limited to the above-described embodiments, and various modifications are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0251] 11, 61, 101, 201, 301, 401 and 501 punches, 21, 71, 121, 221, 321, 421 and 521 punch bodies, 22-1 to 22-4, 72-1 to 72-4, 122-1 to 122-4, 222-1 to 222-4, 322-1 to 322-4, 422-1 to 422-4 and 522-1 to 522-4 vibrators, 23, 73, 123, 223, 323, 423 and 523 washers, 24, 74, 124, 224, 324, 424 and 524 nuts, 31, 81, 131, 231, 331, 431 and 531 vibrating parts, 32, 82, 132, 232, 332, 432, and 532: transducer mounting part; 33, 83, 133, 163, 233, 262, 333, 363, 433, 463, 533, and 563: pressing part; 34, 84, 134, 234, 334, 434, and 534: holding part; 35, 85, 135, 171, 235, 271, 335, 371, 435, 471, 535, and 571: fixed end; 36, 86, 136, 172, 236, 272, 336, 372, 436, 472, 536, and 572: pressing end; 41-1, 41-2, 91-1, 91-2, 141-1, 141-2, 241-1, 241-2, 341-1, 341-2, 441-1, 441-2, 541-1 and 541-2 flat parts, 92, 142, 143, 242, 243, 342, 442, 443, 481, 542, 543, 581 and 582 holes, 151, 251, 351, 451 and 551 punch tip members, 152, 252 and 552 bolts, 161, 361, 461 and 561 screw fastening parts, 162, 261, 362, 462 and 562 insert parts, 701 die, 702 base plate, 703 die plate 704 banking plate, 705 holder, 721 die body, 722-1 to 722-4 vibrators, 723 washer, 724 nut, 731 excitation part, 732 vibrator mounting part, 733 pressing part, 734 holding part, 735 fixed end, 736 pressing end, 741-1 and 741-2 flat part, 751 die blade, 752 hole, 753 scrap relief hole, 761 fixed end side hole part, 762 pressing end side hole part

Claims

1. In a punch of a die that is attached to a press processing device and used for press processing, a punch body that, when performing press working, receives a pressing force in a first direction applied from the press working device at a holding part and transmits the pressing force in the first direction to a material that is an object of press working; a vibrator attached to the punch body and applying vibration of a predetermined wavelength with an amplitude in the first direction to the punch body; Including, a length of the punch body in the first direction is set to half the wavelength of the vibration; a length of the punch body in the first direction, the length from the holding portion to one end of the punch body, being set to one-fourth of the wavelength of the vibration; the shape of the punch body from the holding portion to the one end portion is formed rotationally symmetrical with respect to a central axis extending through a center of the punch body in the first direction, The vibrator is attached to the punch body between the holding portion and the one end portion. punch.

2. 2. The punch according to claim 1, The holding portion protrudes from the punch body in a direction intersecting the first direction. punch.

3. The punch according to claim 2, The holding portion is formed in a flange shape. punch.

4. 2. The punch according to claim 1, The punch body is formed in a cylindrical shape from the holding portion to the one end portion, The vibrator is formed in a ring shape that can be attached to cover a part of the side surface of the punch body between the holding portion and the one end of the punch body. punch.

5. 2. The punch according to claim 1, The vibrator is a piezoelectric element. punch.

6. 2. The punch according to claim 1, The punch body is provided with a hole extending through the center of the punch body in the first direction, the hole being for passing air. punch.

7. 2. The punch according to claim 1, The punch further includes a punch tip member that is detachably attached to the other end of the punch body and that comes into contact with the material and presses the material in the first direction during press working. punch.

8. The punch according to claim 7, The punch tip member is attached to the other end of the punch body by screwing. punch.

9. The punch according to claim 7, The punch tip member is screwed onto a bolt that is inserted from the one end of the punch body into a hole that extends through the center of the punch body in the first direction. punch.

10. 10. The punch according to claim 9, The bolt is provided with a first hole extending through a center of the bolt in the first direction, the first hole being for passing air, The punch tip member is provided with a second hole extending through the center of the punch tip member in the first direction, the second hole communicating with the first hole for passing the air. punch.

11. A press working device comprising the punch according to claim 1.

12. a punch body that receives a pressing force in a predetermined direction applied from a press processing device at a holding part when performing press processing and transmits the pressing force in the predetermined direction to a material to be press processed, the punch body having a length in the predetermined direction that is twice the length from the holding part to one end, and a vibrator that is attached to a part of the punch body between the holding part and one end, the part of the punch body being rotationally symmetrical about a central axis extending through the center of the punch body in the predetermined direction, and that applies vibration to the punch body, During press working, the vibrator applies the vibration to the punch body, the vibration having an amplitude in the direction and a wavelength twice the length of the punch body in the direction, When pressing, the pressing device applies a pressing force in the direction to the holding part, and the punch body transmits the pressing force in the direction to the material. Press processing method.

13. In a die of a metal mold that is attached to a press processing device and used for press processing, a die body that receives a pressing force in a first direction applied from the press processing device at a holding portion when performing press processing, and against which the material to which the force is applied is pressed; a vibrator attached to the die body and applying vibration of a predetermined wavelength and amplitude in the first direction to the die body; Including, a length of the die body in the first direction is set to half the wavelength of the vibration; a length of the die body in the first direction, the length from the holding portion to one end of the die body, being set to one-fourth of the wavelength of the vibration; the shape of the die body from the holding portion to the one end is formed rotationally symmetrical with respect to a central axis extending through a center of the die body in the first direction, The vibrator is attached to the die body between the holding portion and the one end. Thailand.

14. 14. The die of claim 13, The holding portion protrudes from the die body in a direction intersecting the first direction. Thailand.

15. 15. The die of claim 14, The holding portion is formed in a flange shape. Thailand.

16. 14. The die of claim 13, The die body is formed in a cylindrical shape from the holding portion to the one end, The vibrator is formed in a ring shape that can be attached to cover a part of the side surface of the die body between the holding portion and the one end of the die body. Thailand.

17. 14. The die of claim 13, The vibrator is a piezoelectric element. Thailand.

18. A press working device comprising the die according to claim 13.

19. a die body that receives a pressing force in a predetermined direction applied from the press processing device at a holding part during press processing, and against which the material to be pressed is pressed, the die body having a length in the predetermined direction that is twice the length from the holding part to one end thereof; and a vibrator that is attached between the holding part and one end of the die body, the vibrator being formed rotationally symmetrically with respect to a central axis extending through the center of the die body in the predetermined direction, and the one end thereof, and that applies vibration to the die body, When pressing, the vibrator applies the vibration to the die body with an amplitude in the direction and a wavelength twice the length of the die body in the direction, During press working, the die body is held in the direction by the holding portion, and the die body receives the force applied to the material from the press working device. Press processing method.

Images