Processing machine and processing method using the same

Abstract

To provide a processing machine capable of further shortening molding time. [Solution] The processing machine 1 is equipped with a first fixing part 11 that fixes the main body part of the tube body to be processed, which has an end part, an end forming part, and a main body part in that order; a second fixing part 12 that fixes the end forming part of the tube body; a cutting processing part 20 that cuts off the end part of the tube body fixed by the first fixing part 11 and the second fixing part 12; an end processing part that terminally processes the end forming part of the tube body fixed by the first fixing part 11 after the end part has been cut off and the second fixing part 12 has been removed; and a moving part 50 that can align the cutting processing part 20 and the end processing part with the tube body.

Description

[Technical Field]

[0001] The present invention relates to a processing machine and a processing method using the same. [Background technology]

[0002] Patent Document 1 discloses a pipe end forming device that uses a twin clamp to perform end processing of a pipe in two separate steps. The pipe end forming device disclosed in Patent Document 1 performs end processing in two separate steps: end processing using a main clamp, and end processing using a main clamp and a sub-clamp, thereby enabling multiple end processing of pipes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 1-202399 Summary of the Invention [Problem to be solved by the invention]

[0004] The pipe end forming device disclosed in Patent Document 1 has the problem that when the pipe is long, the pipe must be press-cut using a separate device, which takes a long time to form. Therefore, there has been a demand for a shorter forming time.

[0005] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a processing machine that can further shorten the molding time. [Means for solving the problem]

[0006] In order to achieve the above object, a processing machine according to a first aspect of the present invention comprises: a first fixing portion for fixing a main body portion of a tubular body to be processed, the main body portion having an end portion, an end forming portion, and a main body portion in this order along a cylindrical core direction; a second fixing portion that fixes the end forming portion of the tubular body; a cutting unit that cuts off the end portion of the tubular body fixed by the first fixing portion and the second fixing portion; an end processing unit that processes the end forming portion to the pipe body fixed by the first fixing portion after the end portion is cut off and the second fixing portion is removed; a moving unit that can align the cutting unit and the end processing unit with the pipe body; Equipped with 、 The cutting processing unit is a mandrel inserted into the end portion and the end forming portion of the tubular body fixed by the second fixing portion, the mandrel having a notch groove formed at a boundary between the end portion and the end forming portion; a notch blade that passes through the gap formed by the notch groove and forms a notch at the boundary between the end portion and the end forming portion; a cutting blade that inserts its cutting edge into the notch after the mandrel is removed to cut off the distal end portion from the tube; Equipped with.

[0008] The end processing portion may have a molding die that is pressed against the end forming portion of the pipe body and performs at least one of bead processing, flange processing, drawing processing, and pipe expansion processing.

[0009] The molding die includes a first molding die and a second molding die, The end processing section may perform end processing in two steps: first end processing using the first molding die, and second end processing using the second molding die.

[0010] In order to achieve the above object, a processing method according to a second aspect of the present invention comprises: Using the processing machine according to the first aspect of the present invention, a step of fixing the tubular body with the first fixing portion and the second fixing portion, aligning the cutting processing unit with the tubular body with the moving portion, and cutting the end portion with the cutting processing unit; After the end portion is cut off, the second fixing portion is removed, and the moving portion aligns the end processing portion with the pipe body in place of the cutting processing portion, and the end forming portion is processed by the end processing portion. Equipped with. [Effects of the Invention]

[0011] In the processing machine according to the present invention, the end portion of the tube fixed by the first and second fixing parts is cut off, and after the end portion is cut off and the second fixing part is removed, the end forming part is terminated on the tube fixed by the first fixing part, so that cutting and termination can be performed in a batch manner in one processing machine. Therefore, the processing machine according to the present invention can further shorten the molding time. [Brief explanation of the drawings]

[0012] [Figure 1] 1A is a schematic plan view of a processing machine according to an embodiment of the present invention, and FIG. 1B is a plan view of a tube body. [Figure 2] 1 is a schematic side view showing a pipe holding portion according to an embodiment of the present invention; [Figure 3] 1A is a plan view of a main clamp according to an embodiment of the present invention, FIG. 1B is a right side view of a main clamp according to an embodiment of the present invention, and FIG. 1C is a schematic view showing a usage mode of a main clamp according to an embodiment of the present invention. [Figure 4] 1A is a front view of a sub-clamp according to an embodiment of the present invention, and FIG. 1B is a right side view of the sub-clamp according to an embodiment of the present invention. [Figure 5] 1A and 1B are schematic diagrams showing a usage mode of a sub-clamp according to an embodiment of the present invention. [Figure 6] 1A is a right side view of a mandrel according to an embodiment of the present invention, and FIG. 1B is a schematic view showing a usage mode of the mandrel according to an embodiment of the present invention. [Figure 7] 1 is a schematic view showing a cutting processing unit according to an embodiment of the present invention; [Figure 8] 1 is a schematic view showing a notched blade portion and a cutting blade portion according to an embodiment of the present invention. [Figure 9] 1A is an enlarged view of a notched blade according to an embodiment of the present invention, and FIG. 1B is an enlarged view of a cutting blade. [Figure 10]1A is a right side view of a molding die according to an embodiment of the present invention, FIG. 1B is a schematic plan view showing a usage state of a first molding die according to an embodiment of the present invention, and FIG. 1C is a schematic plan view showing a usage state of a second molding die according to an embodiment of the present invention. [Figure 11] 1A is a block diagram showing the configuration of a control unit according to an embodiment of the present invention, and FIG. 1B is a flowchart showing a processing method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, a processing machine 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. For ease of understanding, mutually orthogonal XYZ coordinates will be set and referenced as appropriate.

[0014] Embodiment The processing machine 1 according to this embodiment is a device that cuts off the end portion 130 of a tube 100 to be processed, adjusts the length of the tube 100, and also processes the end of the end forming portion 120 of the tube 100 from which the end portion 130 has been cut. As shown in FIG. 1(a), the processing machine 1 includes a tube holding unit 10, a cutting unit 20, an end processing unit 30, and a moving unit 50.

[0015] As shown in FIG. 1(b), the pipe 100 is formed in a cylindrical shape. The pipe 100 is a metal elbow. However, the pipe 100 is not limited to this. For example, the pipe 100 may be an S-shaped, L-shaped, or straight pipe. The pipe 100 has a main body portion 110, an end forming portion 120, and an end portion 130 in the cylindrical core direction D1.

[0016] The main body 110 is a cylindrical body that is curved at 90 degrees. However, the present invention is not limited to this. The main body 110 may be, for example, a cylindrical body that is formed in a linear shape.

[0017] The end forming portion 120 is a portion formed near one end of the tube 100. When the tube 100 is fixed to the processing machine 1, the end forming portion 120 extends in the -Y direction from the -Y side end of the main body portion 110. The end forming portion 120 is the target of terminal processing and becomes the end portion of the processed tube 100. The tube core direction D1 of the end forming portion 120 is the same direction as the Y-axis direction.

[0018] The end portion 130 is the end of the tubular body 100. The end portion 130 extends in the -Y direction from the -Y side end of the end forming portion 120. The cylindrical core direction of the end portion 130 is the same as the cylindrical core direction D1 of the end forming portion 120. The end portion 130 is later cut and cut off from the tubular body 100.

[0019] The tube holding unit 10 secures the tube 100. When cutting or processing the tube 100, the tube holding unit 10 secures the tube 100 so that it does not move, thereby improving the accuracy of the cutting and processing. As shown in Figures 2 to 4, the tube holding unit 10 has a first fixing unit 11 and a second fixing unit 12. The cutting unit 20 is omitted from Figures 2 to 4.

[0020] The first fixing part 11 is a main clamp that fixes the main body part 110 of the tubular body 100. The first fixing part 11 clamps the main body part 110. The first fixing part 11 fixes the main body part 110 so that the cylindrical core direction D1 of the end forming part 120 and the end part 130 is aligned with the Y-axis direction. The first fixing part 11 has a first main clamp 11a, a second main clamp 11b, and a main clamp driver 11c.

[0021] The first main clamp 11a is a member on which the main body 110 is placed. A recess 11a1 is formed on the surface of the first main clamp 11a on the +Z side. The main body 110 is placed so as to fit into the recess 11a1 of the first main clamp 11a. The first main clamp 11a supports the main body 110 from the -Z side. However, this is not limited to this. A member that supports the pipe body 100 may be provided, and the first main clamp 11a may be pressed against the main body 110 from the -Z side of the main body 110.

[0022] The second main clamp 11b is a member that is pressed against the main body portion 110. A recess 11b1 is formed on the surface of the second main clamp 11b on the -Z side. The second main clamp 11b is pressed against the main body portion 110 so that the main body portion 110 fits into the recess 11b1. The second main clamp 11b is pressed against the main body portion 110 from the +Z side of the main body portion 110.

[0023] By combining the first main clamp 11a and the second main clamp 11b, the recesses 11a1 and 11b1 form a gap therein that can fit with the main body 110. When the main body 110 is clamped between the first main clamp 11a and the second main clamp 11b, the recesses 11a1 and 11b1 cover the outer shape of the main body 110 and press and fix it.

[0024] The main clamp driver 11c moves the second main clamp 11b in the Z-axis direction. The main clamp driver 11c presses the second main clamp 11b against the main body 110 from the +Z side of the main body 110. Furthermore, the main clamp driver 11c may move the first main clamp 11a in the Z-axis direction. The main clamp driver 11c may press the first main clamp 11a against the main body 110 from the -Z side of the main body 110.

[0025] 2 and 5, the second fixing portion 12 is a sub-clamp that fixes the end forming portion 120 of the tube body 100. The second fixing portion 12 clamps the end forming portion 120. The second fixing portion 12 fixes the end forming portion 120 so that the tube core direction D1 of the end forming portion 120 is aligned with the Y-axis direction. The second fixing portion 12 has a first sub-clamp 12a, a second sub-clamp 12b, and a sub-clamp driver 12c.

[0026] The first sub-clamp 12a is a member that is pressed against the end forming portion 120. A recess 12a1 is formed on the surface of the first sub-clamp 12a on the +Z side. The first sub-clamp 12a is pressed against the end forming portion 120 so that the end forming portion 120 fits into the recess 12a1. The first sub-clamp 12a is pressed against the end forming portion 120 from the -Z side of the end forming portion 120.

[0027] The second sub-clamp 12b is a member that is pressed against the end forming portion 120. A recess 12b1 is formed on the -Z side surface of the second sub-clamp 12b. The second sub-clamp 12b is pressed against the end forming portion 120 so that the end forming portion 120 fits into the recess 12b1. The second sub-clamp 12b is pressed against the end forming portion 120 from the +Z side of the end forming portion 120.

[0028] By combining the first sub-clamp 12a and the second sub-clamp 12b, the recesses 12a1 and 12b1 form a gap therein that can fit with the end forming portion 120. When the end forming portion 120 is clamped between the first sub-clamp 12a and the second sub-clamp 12b, the recesses 12a1 and 12b1 cover the outer shape of the end forming portion 120 and press and fix it.

[0029] The sub-clamp driver 12c moves the first sub-clamp 12a and the second sub-clamp 12b. The sub-clamp driver 12c is provided so as to be able to move the first sub-clamp 12a and the second sub-clamp 12b in the Z-axis direction. The sub-clamp driver 12c presses the first sub-clamp 12a against the end forming portion 120 from the -Z side of the end forming portion 120. The sub-clamp driver 12c presses the second sub-clamp 12b against the end forming portion 120 from the +Z side of the end forming portion 120.

[0030] The cutting unit 20 press-cuts the end portion 130 of the tube 100. However, this is not limited to this. The cutting unit 20 may be any device capable of cutting the end portion 130. The cutting unit 20 may cut the end portion 130 by, for example, band saw cutting, circular saw cutting, or laser processing. The cutting unit 20 adjusts the length of the tube 100. As shown in Figures 6 to 9, the cutting unit 20 has a mandrel 21, a notching blade 22, a cutting blade 23, and a chip holder 24.

[0031] The mandrel 21 supports the end forming portion 120 and the distal end portion 130 of the tubular body 100 from the inside. The mandrel 21 suppresses distortion of the tubular body 100 that occurs when the distal end portion 130 is cut off. The mandrel 21 is inserted into the end forming portion 120 and the distal end portion 130 of the tubular body 100. The outer circumferential surface of the mandrel 21 is formed into a shape that can fit against the inner circumferential surfaces of the end forming portion 120 and the distal end portion 130 of the tubular body 100. The mandrel 21 is provided at a position that allows it to be inserted into the end forming portion 120 and the distal end portion 130 in the cylindrical core direction D1. The mandrel 21 has a round rod-like shape extending in the cylindrical core direction D1. However, the shape of the mandrel 21 is not limited to this. It is sufficient that the mandrel 21 is formed into a shape that can fit inside the end forming portion 120 and the distal end portion 130. For example, when the end forming portion 120 and the end portion 130 are formed in a rectangular cylindrical shape, the mandrel 21 may have a rectangular columnar shape extending in the cylindrical core direction D1. The mandrel 21 is formed with a recess 21a.

[0032] The recess 21a is a notched groove formed at a position facing the boundary between the end forming portion 120 and the end portion 130 of the tubular body 100. The recess 21a is formed in an annular shape along the circumferential direction of the outer circumferential surface of the tubular body 100. The recess 21a is formed on the side surface of the mandrel 21 in a direction perpendicular to the core direction of the mandrel 21.

[0033] The notch blade portion 22 forms a pair of notches 101 in the tube 100. The notches 101 formed by the notch blade portion 22 are formed at the boundary between the end forming portion 120 and the terminal end portion 130 of the tube 100. The notch blade portion 22 has a notch blade 22a and a first cylinder 22b.

[0034] The notching blade 22a cuts into a pair of side surfaces of the tubular body 100 that are symmetrical about the tubular core. The notching blade 22a is provided in a direction perpendicular to the tubular core direction D1 of the end forming portion 120 and the end portion 130. The notching blade 22a is provided so that its central axis is inclined at 45 degrees with respect to the XY plane. However, this is not limited thereto. The notching blade 22a only needs to not interfere with other components, such as the sub-clamp driving unit 12c. The notching blade 22a may also be provided so that its central axis is inclined at another angle with respect to the XY plane. The tip of the notching blade 22a is pressed against the boundary between the end forming portion 120 and the end portion 130 of the tubular body 100. The notching blade 22a has a recessed portion 22a1 and a pair of side blades 22a2.

[0035] The recess 22a1 is a recess provided at the tip of the notching blade 22a. The recess 22a1 is formed in a U-shape inclined at 135 degrees when viewed from the front (viewed from the -Y direction). The bottom of the recess 22a1 abuts against the side surfaces of the tube 100 when the notching blade 22a cuts into the pair of side surfaces of the tube 100. The bottom of the recess 22a1 does not have a blade formed thereon and does not cut the tube 100. The width of the recess 22a1 in a direction perpendicular to the central axis of the notching blade 22a is shorter than the diameters of the end forming portion 120 and the terminal portion 130.

[0036] The pair of side blades 22a2 are blades formed on both ends of the recessed portion 22a1. When the tip ends of the notched blades 22a are pressed against the boundary between the end forming portion 120 and the distal end portion 130 of the tubular body 100, the pair of side blades 22a2 form a notch 101 at the boundary between the end forming portion 120 and the distal end portion 130. The pair of side blades 22a2 are formed symmetrically around the central axis of the notched blades 22a so that when forming the notch 101, the pair of side blades 22a2 pass through the pair of recessed portions 21a of the mandrel 21 and do not come into contact with the mandrel 21.

[0037] The first cylinder 22b moves the notch blade 22a along the central axis. The first cylinder 22b moves the notch blade 22a in a direction toward the cylindrical core of the end forming portion 120 and the end portion 130, thereby pressing the notch blade 22a against the boundary between the end forming portion 120 and the end portion 130. The first cylinder 22b then causes the notch blade 22a to form a notch 101.

[0038] The cutting blade section 23 cuts off the end portion 130 of the tube 100 where the incision 101 is formed. The cutting blade section 23 has a cutting blade 23a and a second cylinder 23b.

[0039] The cutting blade 23a cuts the tubular body 100 at the boundary between the end forming portion 120 and the distal end portion 130. The cutting blade 23a is provided in a direction perpendicular to the cylindrical axis direction D1 of the end forming portion 120 and the distal end portion 130. The cutting blade 23a is provided so that the central axis direction of the cutting blade 23a is inclined at -45 degrees with respect to the XY plane. However, this is not limited to this. The central axis direction of the cutting blade 23a may be formed in a direction perpendicular to the central axis direction of the notch blade 22a and the cylindrical axis direction D1 of the end forming portion 120 and the distal end portion 130. The tip of the cutting blade 23a, which is the cutting edge, is formed in a V-shape. The width of the cutting blade 23a is longer than the diameter of the end forming portion 120 and the distal end portion 130. The tip of the cutting blade 23a is pressed against one side of the notch 101. The cutting blade 23a is inserted so that its tip is pressed against one side of the notch 101 and penetrates to the other side of the notch 101. The cutting blade 23a cuts, i.e., press-cuts, the boundary between the end forming portion 120 and the terminal portion 130 so as to push the notch 101 apart.

[0040] The second cylinder 23b moves the cutting blade 23a along the central axis direction. The second cylinder 23b moves the cutting blade 23a in a direction perpendicular to the cylindrical core direction D1 of the end forming portion 120 and the terminal end portion 130, and presses the cutting blade 23a against one side of the notch 101. The second cylinder 23b then causes the cutting blade 23a to cut off the terminal end portion 130 of the tubular body 100.

[0041] The chip receiver 24 receives the cut-off end portion 130 and cutting chips. The chip receiver 24 is provided further below the opening formed below (in the -Z direction) the notched blade portion 22 and the cutting blade portion 23. The end portion 130 cut by the notched blade 22a and the cutting blade 23a, and cutting chips generated when the end portion 130 is press-cut, fall into and are collected in the chip receiver 24.

[0042] The end processing unit 30 processes the end forming portion 120 of the tube 100. The end processing unit 30 processes the end forming portion 120 of the tube 100 with a bead. However, this is not limited to this. The end processing unit 30 may process the end forming portion 120 of the tube 100. For example, the end processing unit 30 may process the end forming portion 120 of the tube 100 with a flange, a drawing, or a pipe expansion. The end processing unit 30 performs end processing in two steps to suppress distortion due to end processing and perform end processing with high precision. As shown in FIG. 10 , the end processing unit 30 has a first molding die 31 and a second molding die 32. In FIG. 10 , the first molding die 31 and the second molding die 32 are shown to have the same shape for simplification. However, the shapes of the first molding die 31 and the second molding die 32 may be different.

[0043] The first molding die 31 is used in the initial terminal processing step of the end forming portion 120. The first molding die 31 presses the end forming portion 120 in the +Y direction. The first molding die 31 is a die having a cylindrical shape extending in the cylinder core direction D1. The first molding die 31 processes a bead on the side surface of the end forming portion 120. A hole 31a into which the end forming portion 120 is inserted is formed in the end surface on the +Y side of the first molding die 31.

[0044] The hole 31a is a hole into which the end forming portion 120 is inserted. The hole 31a is used to process the end of the end forming portion 120. The hole 31a of the first molding die 31 is a round hole with its axial direction aligned with the cylinder core direction D1. However, this is not limited to this. When the end forming portion 120 is formed in a square cylindrical shape, the hole 31a may be a square hole with its axial direction aligned with the cylinder core direction D1. The hole 31a is a blind hole with one end closed. The hole 31a is formed with a hole portion 31a1 and a bottom portion 31a2. Furthermore, the hole 31a may be formed with a groove for forming a bead in the end forming portion 120.

[0045] The hole 31a1 is formed in a shape that can fit face-to-face with the outer peripheral surface of the end forming portion 120 of the tube body 100. However, the depth of the hole 31a1 is shorter than the length of the end forming portion 120 in the cylindrical core direction D1. The hole 31a1 is formed to open on the +Y side surface of the first molding die 31.

[0046] Bottom portion 31a2 closes hole portion 31a1. Bottom portion 31a2 is formed at the end portion on the -Y side of hole portion 31a1. When first molding die 31 presses end forming portion 120 in the +Y direction, bottom portion 31a2 comes into contact with and presses the end portion on the -Y side of end forming portion 120.

[0047] The second molding die 32 is used for the second terminal processing step of the end forming portion 120. The second molding die 32 presses the end forming portion 120 in the +Y direction. The second molding die 32 is a die having a cylindrical shape extending in the cylinder core direction D1. The second molding die 32 performs a second bead processing on the side surface of the end forming portion 120. The second molding die 32 improves processing accuracy by performing a second processing on the bead formed on the end forming portion 120. A hole 32a into which the end forming portion 120 is inserted is formed on the end surface on the +Y side of the second molding die 32.

[0048] The hole 32a is a hole into which the end forming portion 120 is inserted. The hole 32a is used to process the end of the end forming portion 120. The hole 32a is a round hole with its axial direction aligned with the cylindrical core direction D1. However, this is not limited to this. When the end forming portion 120 is formed in a rectangular cylindrical shape, the hole 32a may be a square hole with its axial direction aligned with the cylindrical core direction D1. The hole 32a is a blind hole with one end closed. The hole 32a is formed with a hole portion 32a1 and a bottom portion 32a2. Furthermore, the hole 32a may be formed with a groove for forming a bead in the end forming portion 120.

[0049] The hole 32a1 is formed in a shape that can fit face-to-face with the outer peripheral surface of the end forming portion 120 of the tube body 100. However, the depth of the hole 32a1 is shorter than the length of the end forming portion 120 in the cylindrical core direction D1. The hole 32a1 is formed to open on the +Y side surface of the second molding die 32.

[0050] Bottom portion 32a2 closes hole portion 32a1. Bottom portion 32a2 is formed at the end portion on the -Y side of hole portion 32a1. When second molding die 32 presses end forming portion 120 in the +Y direction, bottom portion 32a2 comes into contact with and presses the end portion on the -Y side of end forming portion 120.

[0051] The driving unit 40 moves the mandrel 21, the first molding die 31, or the second molding die 32 in the cylindrical core direction D1. The driving unit 40 moves the mandrel 21 in the +Y direction, thereby inserting the mandrel 21 into the end forming portion 120 and the end portion 130 of the tube body 100. The driving unit 40 moves the first molding die 31 in the +Y direction and presses it against the end forming portion 120. The driving unit 40 moves the second molding die 32 in the +Y direction and presses it against the end forming portion 120. The driving unit 40 has a first rod 41, a second rod 42, a third rod 43, a push-out rod 44, and a driving unit main body 45.

[0052] The first rod 41 is a rod-shaped member extending in the cylindrical core direction D1. The mandrel 21 is attached to the +Y side end of the first rod 41.

[0053] The second rod 42 is a rod-shaped member extending in the cylindrical core direction D1. The first molding die 31 is attached to the +Y side end of the second rod 42.

[0054] The third rod 43 is a rod-shaped member extending in the cylindrical core direction D1. The second molding die 32 is attached to the +Y side end of the third rod 43.

[0055] The push rod 44 is a rod-shaped member extending in the cylinder core direction D1. The push rod 44 is movable in the cylinder core direction D1. The push rod 44 engages with the -Y side end of the first rod 41, the second rod 42, or the third rod 43, and moves the first rod 41, the second rod 42, or the third rod 43 in the cylinder core direction D1. As a result, the push rod 44 moves the mandrel 21, the first molding die 31, or the second molding die 32 attached to the first rod 41, the second rod 42, or the third rod 43 in the cylinder core direction D1.

[0056] The drive unit main body 45 movably supports the push-out rod 44. The drive unit main body 45 moves the push-out rod 44 in the cylinder core direction D1.

[0057] The moving unit 50 moves the first rod 41, the second rod 42, or the third rod 43 in an orthogonal direction D2, which is the same as the X-axis direction orthogonal to the tube core direction D1. As a result, the moving unit 50 moves the mandrel 21, the first molding die 31, and the second molding die 32 in the orthogonal direction D2. The moving unit 50 supports the first rod 41, the second rod 42, and the third rod 43 in this order. For cutting the tube 100, the moving unit 50 can move the mandrel 21 so that the axial center of the mandrel 21 and the cylindrical axis of the end portion 130 of the tube 100 are concentric. For terminal processing of the tube 100, the moving unit 50 can move the first molding die 31 so that the hole center of the hole 31a of the first molding die 31 and the cylindrical axis of the end forming portion 120 of the tube 100 are concentric. Furthermore, for the purpose of terminal processing of the tube body 100, the moving unit 50 can move the second molding die 32 so that the hole core of the hole 32a of the second molding die 32 and the cylindrical axis of the end forming portion 120 of the tube body 100 are concentric.

[0058] The pipe holding unit 10, cutting unit 20, end processing unit 30, and moving unit 50 are controlled by a control unit 60 shown in Fig. 11(a). The control unit 60 has a memory 61 that stores a control program, a processor 62 that executes the control program, and an interface 63 that issues control signals.

[0059] By executing the control program stored in the memory 61, the processor 62 issues control signals to the pipe holding unit 10, the cutting processing unit 20, the terminal processing unit 30, and the moving unit 50 via the interface 63, thereby controlling their operation.

[0060] Next, a processing method using the processing machine 1 will be described.

[0061] The control unit 60 controls each unit as shown in FIG. 11(b). Specifically, first, as shown in FIG. 3(c), the control unit 60 drives the main clamp driver 11c of the first fixing unit 11 to move the second main clamp 11b in the -Z direction. Then, the control unit 60 causes the second main clamp 11b to press the main body 110 of the tube 100, which is placed so as to fit into the recess 11a1 of the first main clamp 11a, from the +Z side. As a result, the control unit 60 clamps the tube 100 so that the main body 110 of the tube 100 fits into the recess 11a1 of the first main clamp 11a and the recess 11b1 of the second main clamp 11b.

[0062] Next, as shown in Figure 6(b), the control unit 60 drives the moving unit 50 to move the mandrel 21 so that the axial core of the mandrel 21 and the cylindrical axis of the distal end 130 of the tubular body 100 are concentric. Then, the control unit 60 drives the driving unit 40 to insert the mandrel 21 into the interior of the distal end 130.

[0063] 5, the control unit 60 drives the sub-clamp drive unit 12c of the second fixing unit 12 to move the first sub-clamp 12a in the +Z direction and the second sub-clamp 12b in the -Z direction. As a result, the control unit 60 clamps the tube 100 so that the end forming portion 120 of the tube 100 fits into the recess 12a1 of the first sub-clamp 12a and the recess 12b1 of the second sub-clamp 12b.

[0064] 9(a), the control unit 60 drives the first cylinder 22b of the notching blade unit 22 to make an incision at the boundary between the end forming portion 120 and the terminal end portion 130 of the tubular body 100 with the side blade 22a2 of the notching blade 22a of the notching blade unit 22, thereby forming a pair of incisions 101. Then, the control unit 60 drives the first cylinder 22b to retract the notching blade 22a, and then drives the first cylinder 22b to retract the mandrel 21 that had been inserted into the terminal end portion 130.

[0065] 9(b), the control unit 60 drives the second cylinder 23b of the cutting blade unit 23 to insert the cutting blade 23a of the cutting blade unit 23 into the pair of notches 101, thereby performing the step of cutting off the end portion 130. Then, the control unit 60 drives the second cylinder 23b to retract the notch blade 22a, and then drives the sub-clamp drive unit 12c to remove the first sub-clamp 12a and the second sub-clamp 12b from the end forming unit 120 of the tubular body 100.

[0066] Next, the control unit 60 drives the moving unit 50 to move the mandrel 21 in the +X direction, as shown in FIG. 10(b). Additionally, the control unit 60 drives the moving unit 50 to move and align the first molding die 31, instead of the mandrel 21, so that the hole core of the hole 31a of the first molding die 31 of the end processing unit 30 and the cylindrical axis of the end forming portion 120 of the tube 100 are concentric. The control unit 60 then drives the driving unit 40 to perform the first bead processing, which is the first end processing step. Specifically, the control unit 60 moves the first molding die 31 in the +Y direction to insert the end forming portion 120 into the hole portion 31a1 of the hole 31a. After the tip of the end forming portion 120 abuts the bottom portion 31a2, the control unit 60 applies further pressure in the +Y direction to the end forming portion 120 to press it. The pressed part of the edge forming portion 120 is formed into a bead-like shape. Furthermore, the control unit 60 drives the drive unit 40 to pull back the first molding die 31.

[0067] Next, as shown in FIG. 10( c), the control unit 60 drives the moving unit 50 to move the mandrel 21 and the first molding die 31 in the +X direction. Additionally, the control unit 60 drives the moving unit 50 to move and align the second molding die 32, replacing the first molding die 31, so that the hole core of the hole 32a of the second molding die 32 of the end processing unit 30 and the cylindrical axis of the end forming portion 120 of the tube 100 are concentric. The control unit 60 then drives the driving unit 40 to perform a second bead processing, which is the second end processing. Specifically, the control unit 60 moves the second molding die 32 in the +Y direction to insert the end forming portion 120 into the hole portion 32a1 of the hole 32a. After the tip of the end forming portion 120 abuts the bottom portion 32a2, the control unit 60 applies further pressure in the +Y direction to the end forming portion 120 to press it. The beat-shaped portion of the pressed edge forming portion 120 is formed with even greater precision. Furthermore, the control unit 60 drives the drive unit 40 to pull back the second molding die 32.

[0068] Finally, the control unit 60 drives the main clamp driving unit 11c to remove the first main clamp 11a and the second main clamp 11b from the main body 110 of the pipe body 100.

[0069] As described above, in the processing machine 1 according to this embodiment, the cutting unit 20 performs cutting processing of the tubular body 100 with high precision, and then the end processing unit 30 performs end processing of the tubular body 100. The processing machine 1 performs cutting processing and end processing, which are different processes, in a batch system using a single device.

[0070] Conventionally, different processes on a tube were performed using separate devices. This required the tube to be moved to a different device and realigned. However, the processing machine 1 according to the present embodiment can perform the different processes of cutting and end processing in a single device in a batch manner, thereby further shortening the molding time.

[0071] In the processing machine 1 according to this embodiment, the tube 100 is fixed by a first fixing portion 11 and a second fixing portion 12. The processing machine 1 fixes the tube 100 with the first fixing portion 11 and the second fixing portion 12 to perform cutting, and fixes the tube 100 with only the first fixing portion 11 to perform end processing. The processing machine 1 can change the processing position of the tube 100 by using the first fixing portion 11 and the second fixing portion 12. As a result, the processing machine 1 can perform cutting and end processing at different positions on the tube 100 in a batch manner using a single device. This allows the processing machine 1 to further reduce the molding time.

[0072] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments.

[0073] In the processing machine 1 according to this embodiment, press cutting is performed by the cutting processing unit 20, and bead processing is performed by the end processing unit 30. Furthermore, the processing machine 1 may be provided with another end processing unit, which may perform, for example, flanging, drawing, or pipe expansion. The processing machine 1 may perform, for example, flanging, drawing, or pipe expansion other than bead processing, by the end processing unit 30 and another end processing unit.

[0074] In the processing machine 1 according to this embodiment, the cutting unit 20 and the end processing unit 30 perform cutting and end processing on one end of the tubular body 100. Furthermore, the processing machine 1 may be provided with another cutting unit and another end processing unit to perform cutting and end processing on the other end of the tubular body 100.

[0075] In the processing machine 1 according to this embodiment, the tubular body 100 is placed on the first main clamp 11a and subjected to cutting and terminal processing. Furthermore, the processing machine 1 may be equipped with a sensor, for example, an area sensor, which measures the position and / or shape of the tubular body 100 and performs alignment and the like based on the measured information. For example, in the cutting process, the processing machine 1 may measure the positions of the pair of notches 101 using the sensor and adjust the position or orientation of the cutting blades 23 so that the cutting blades 23 are inserted into the pair of notches 101.

[0076] The present invention allows various embodiments and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are for the purpose of explaining the present invention and do not limit the scope of the present invention. [Explanation of symbols]

[0077] 1 Processing machine 10 Tube body holding part 11 1st fixed part 11a First main clamp 11a1 Recess 11b Second main clamp 11b1 Recess 11c Main clamp drive unit 12 Second fixed part 12a 1st sub-clamp 12a1 Recess 12b Second sub-clamp 12b1 Recess 12c Sub-clamp drive unit 20 Cutting section 21 Mandrel 21a Recess 22 Notched blade 22a Notched blade 22a1 recess 22a2 side blade 22b No. 1 cylinder 23 Cutting blade part 23a cutting blade 23b No. 2 cylinder 24 Kiriko holder 30 Terminal processing section 31 First molding die 31a hole 31a1 Hole 31a2 bottom 32 Second molding die 32a hole 32a1 Hole 32a2 bottom 40 Drive unit 41 First Rod 42 Second Rod 43 Third Rod 44 Push Rod 45 Drive unit body 50 Moving Part 60 Control Unit 61 memory 62 processors 63 Interface 100 Body 101 Notch 110 Main body 120 End forming part 130 End D1 Cylinder core direction D2 Orthogonal direction

Claims

1. a first fixing portion for fixing a main body portion of a tubular body to be processed, the main body portion having an end portion, an end forming portion, and a main body portion in this order along a cylindrical core direction; a second fixing portion that fixes the end forming portion of the pipe body; a cutting unit that cuts off the end portion of the tubular body fixed by the first fixing portion and the second fixing portion; an end processing unit that processes the end forming portion at the end of the pipe body fixed by the first fixing portion after the end portion is cut off and the second fixing portion is removed; a moving unit that can align the cutting unit and the end processing unit with the pipe body; Equipped with The cutting processing unit is a mandrel inserted into the distal end portion and the end forming portion of the tubular body fixed by the second fixing portion, the mandrel having a notched groove formed at a boundary between the distal end portion and the end forming portion; a notch blade that passes through the gap formed by the notch groove and forms a notch at the boundary between the end portion and the end forming portion; a cutting blade that inserts its cutting edge into the notch after the mandrel is removed to cut off the distal end portion from the tube; A processing machine equipped with:

2. The processing machine according to claim 1 , wherein the terminal processing portion has a molding die that is pressed against the end forming portion of the tube body and performs at least one of bead processing, flange processing, drawing processing, and tube expansion processing.

3. The molding die includes a first molding die and a second molding die, The processing machine according to claim 2 , wherein the terminal processing unit performs terminal processing in two steps: first terminal processing using the first molding die, and second terminal processing using the second molding die.

4. Using the processing machine according to any one of claims 1 to 3, a step of fixing the tubular body with the first fixing portion and the second fixing portion, aligning the cutting processing unit with the tubular body with the moving portion, and cutting the end portion with the cutting processing unit; After the end portion is cut off, the second fixing portion is removed, and the moving portion aligns the end processing portion with the pipe body in place of the cutting processing portion, and the end forming portion is processed by the end processing portion. A processing method comprising:

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