Ultrasonic assisted large strain extrusion cutting device

Abstract

An ultrasonic-assisted large strain extrusion cutting device comprises a frame module, an ultrasonic-assisted extrusion module, an ultrasonic-assisted tool module, a first ultrasonic power supply and a second ultrasonic power supply. The frame module is fixedly clamped on a machine tool turret, the ultrasonic-assisted extrusion module and the ultrasonic-assisted tool module are both installed on the frame module, the first ultrasonic power supply is electrically connected to the ultrasonic-assisted extrusion module, and the second ultrasonic power supply is electrically connected to the ultrasonic-assisted tool module. The present invention applies ultrasonic vibration to a cutter head and an extrusion block, so that the chips pass through the gap between the fan-shaped extrusion block and the cutter head, and the chips are extruded to produce large strain deformation, thereby improving the material properties of the chips, and being able to adjust the spacing and angle between the extrusion block and the front cutting edge of the cutter head, so as to study the influence of ultrasonic vibration and the spacing and angle between the extrusion block and the front cutting edge of the cutter head on the large strain deformation and material properties of the chip strip.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to an ultrasonic-assisted large-strain extrusion cutting device. Background Art

[0002] The current industry is developing in the direction of miniaturization and micro-miniaturization, and high-performance materials are urgently needed. Therefore, some scholars have proposed the idea of ​​converting traditional chips into high-performance materials. However, the chip recovery process generated in the traditional subtractive processing is complicated, the recovery cost is high, and the recovery rate is low. Traditional subtractive cutting directly uses the tool to cut the workpiece, and the resulting chips are useless and are generally treated as waste chips. Some existing ultrasonic cutting devices only use ultrasonic assisted tools to cut workpieces without adding an extrusion block mechanism, so the chips obtained in this way are not meaningful. Other existing ultrasonic cutting devices simply use the extrusion effect between the extrusion block and the tool to cause the chips to strain and deform, and the material properties of the chip strip are improved to a certain extent, but there is no coupled ultrasonic vibration in the extrusion block mechanism, and in this device, the spacing and angle between the extrusion block and the front cutting edge of the tool are fixed and cannot be adjusted.

[0003] Studies have shown that ultrasonic vibration and the distance and angle between the extrusion block and the front cutting edge of the cutter head greatly affect the large strain deformation of the chip strip and the degree of change in material properties. Therefore, there is an urgent need for an ultrasonic-assisted large strain extrusion cutting device. Summary of the invention

[0004] The purpose of the present invention is to provide an ultrasonically assisted large strain extrusion cutting device. The present invention applies ultrasonic vibration to the cutter head and the extrusion block, so that the chips pass through the gap between the fan-shaped extrusion block and the cutter head. The chips are extruded to produce large strain deformation, thereby improving the material properties of the chips. The spacing and angle between the extrusion block and the front cutting edge of the cutter head can be adjusted, so as to study the influence of ultrasonic vibration and the spacing and angle between the extrusion block and the front cutting edge of the cutter head on the large strain deformation and material properties of the chip strip.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] An ultrasonically assisted large strain extrusion cutting device comprises a frame plate module, an ultrasonically assisted extrusion module, an ultrasonically assisted tool module, a first ultrasonic power supply and a second ultrasonic power supply. The frame plate module is fixedly clamped on a machine tool tool holder, the ultrasonically assisted extrusion module and the ultrasonically assisted tool module are both installed on the frame plate module, the first ultrasonic power supply is electrically connected to the ultrasonically assisted extrusion module, and the second ultrasonic power supply is electrically connected to the ultrasonically assisted tool module.

[0007] The frame plate module includes a first back plate, a second back plate and a third back plate. The first back plate and the second back plate are both vertically arranged along the left-right direction, and the third back plate is vertically arranged along the front-back direction. The left side of the first back plate is integrally formed and fixedly connected with the front side of the third back plate, and the right side of the second back plate is fixedly connected to the middle part of the left side of the third back plate. Several reinforcing plates arranged side by side up and down are fixedly connected between the left side of the rear side of the first back plate and the right side front side of the third back plate, and between the right side of the rear side of the second back plate and the rear side of the left side of the third back plate. An L-shaped long clamping block for fixing on a machine tool tool holder is integrally formed and fixedly connected between the lower left side of the rear side of the first back plate and the lower right side front side of the third back plate.

[0008] The ultrasonic-assisted extrusion module includes a first amplitude transformer, a first flange, a first transducer and an angle-adjustable extrusion mechanism. The first amplitude transformer is vertically arranged, and the upper and lower parts of the right side of the front side of the second back plate are fixedly connected with first horizontal supports. Two vertical guide rods arranged side by side on the left and right are fixedly installed between the two first horizontal supports. The first flange is horizontally arranged, and the rear side of the first flange is integrally formed with two sleeves fixedly arranged, and the two sleeves are respectively slidably sleeved on the two vertical guide rods. The first amplitude transformer is fixedly installed on the first flange through, and the first transducer is fixedly installed on the top of the first amplitude transformer. The first ultrasonic power supply is electrically connected to the first transducer. The angle-adjustable extrusion mechanism is fixedly installed on the bottom of the first amplitude transformer, and a rotating lever mechanism for driving the first flange to move up and down is installed on the front side of the second back plate.

[0009] The angle-adjustable extrusion mechanism comprises an extrusion shell, a fan-shaped extrusion block, a worm and a first knob. The lower side and the lower front side of the extrusion shell are open. The top plate of the extrusion shell is fixedly connected to the bottom of the first amplitude rod by fastening bolts. The fan-shaped extrusion block is rotatably arranged in the extrusion shell. The inner sides of the left and right plates of the extrusion shell are provided with arc-shaped grooves. The outer edges of the left and right sides of the fan-shaped extrusion block are integrally formed with arc-shaped protrusions. The arc-shaped protrusions on the left and right sides are respectively matched and slidably arranged in the arc-shaped grooves on the left and right sides. The middle part of the outer circumference of the fan-shaped extrusion block is integrally formed with gear teeth along the circumferential direction. The worm is tilted and arranged in the extrusion shell with a high front and a low rear. The front end of the worm passes through and is rotatably connected to the front side plate of the extrusion shell. The rear end of the worm is rotatably installed on the rear side plate of the extrusion shell. The worm is meshingly connected with the gear teeth. The first knob is fixedly installed on the front end of the worm. The left side of the fan-shaped extrusion block is fixedly provided with a first pointer. The left side of the left plate of the extrusion shell is provided with a first arc-shaped dial.

[0010] The rotating lever mechanism includes a rotating long strip, a vertical screw, a second knob, a first slider and a second slider. The rotating long strip is arranged in the left and right directions and is parallel to the second back plate. The left end of the rotating long strip is integrally provided with a second pointer. A first horizontal plug rod is fixedly provided on the left side of the rear side surface of the rotating long strip, a rotating shaft is fixedly provided on the right side of the rear side surface of the rotating long strip, and a second horizontal plug rod is fixedly provided on the right end of the front side surface of the rotating long strip. The center line of the rotating shaft is located between the center line of the first horizontal plug rod and the center line of the second horizontal plug rod. The distance between the center line of the first horizontal plug rod and the center line of the rotating shaft is 120 mm, and the distance between the center line of the rotating shaft and the center line of the second horizontal plug rod is 2 mm. A PVC plate is fixedly provided on the left side of the second back plate, and a circular arc-shaped long hole that is transparent from front to back is opened on the PVC plate. The center of the circular arc-shaped long hole is located on the center line of the rotating shaft, and the distance between the upper end of the circular arc-shaped long hole and the lower end of the circular arc-shaped long hole is 120 mm. The first horizontal plug rod slides and is inserted into the rotating shaft. The second knob is fixedly mounted on the upper end of the vertical lead screw, the vertical lead screw passes through the first slider and is threadably connected to the second slider, the rotating long plate passes through the second slider and is slidably connected to the second slider, and the middle part of the front side surface of the second slider is hinged to the middle part of the rear side surface of the first slider by a pin shaft horizontally arranged along the front and rear directions.

[0011] The ultrasonic-assisted tool module includes a second amplitude transformer, a second flange, a second transducer and a cutter head. The second amplitude transformer is vertically arranged, the second flange is horizontally arranged, the rear side of the second flange is fixedly connected to the middle of the front side of the first back plate, the second amplitude transformer is penetrated and fixedly installed on the second flange, the second transducer is fixedly installed on the top of the second amplitude transformer, the second ultrasonic power supply is electrically connected to the second transducer, the cutter head is fixedly installed on the bottom of the second amplitude transformer, and the bottom of the fan-shaped extrusion block is provided with an inclined surface that fits the front cutting surface of the cutter head, and the front side edge of the inclined surface is located on the center line of the fan-shaped extrusion block.

[0012] Compared with the prior art, the present invention has outstanding substantial features and significant progress. Specifically, the working principle of the present invention is: the L-shaped long strip clamping block is fixedly clamped on the machine tool tool holder, so that the entire device is fixed on the machine tool tool holder, and then the first ultrasonic power supply is electrically connected to the first transducer, and the second ultrasonic power supply is electrically connected to the second transducer. The position of the machine tool tool holder is adjusted to align the tool so that the tool head is in a position suitable for cutting. Initially, the bottom inclined surface of the fan-shaped extrusion block is in contact with the front cutting surface of the tool head. At this time, the second pointer points to the 0 scale value of the second arc-shaped dial. According to the experimental needs, the second knob is turned to drive the vertical screw to rotate, and the vertical screw drives the first slider to move downward, and the first slider drives the second slider to move downward. , the second slider drives the rotating long strip to rotate downward around the rotating axis, the first horizontal plug rod is slidably connected in the arc-shaped long hole, and the second horizontal plug rod rotates upward around the rotating axis, and the second horizontal plug rod drives the first flange to move upward along the two vertical guide rods, thereby adjusting the distance between the fan-shaped extrusion block and the cutter head, and recording the scale value of the second pointer pointing to the second arc-shaped dial (the scale value of the second arc-shaped dial is the distance between the fan-shaped extrusion block and the cutter head) for comparison in subsequent experiments, and then turning the first knob to drive the worm to rotate, the worm is meshed with the gear teeth for transmission connection, and the worm drives the fan-shaped extrusion block to rotate along the arc-shaped groove in the extrusion shell and around the front side of the inclined surface, thereby making the bottom inclined surface of the fan-shaped extrusion block aligned with the front cutter of the cutter head The angle of the surface is adjusted to the angle required by the experiment, and the angle data of the first pointer pointing to the first arc-shaped dial is recorded for comparison in subsequent experiments, and then the first ultrasonic power supply and the second ultrasonic power supply are started. After the first ultrasonic power supply and the second ultrasonic power supply are stable, the first transducer drives the first amplitude rod to vibrate at a high frequency in a specific manner, and the second transducer drives the second amplitude rod to vibrate at a high frequency in a specific manner. Then, the first amplitude rod drives the fan-shaped extrusion block to vibrate at a high frequency in a specific manner, and at the same time, the second amplitude rod drives the cutter head to vibrate at a high frequency in a specific manner. The machine tool is started to cut the workpiece, so that the chips pass through the gap between the fan-shaped extrusion block and the cutter head. The chips are squeezed and deformed with large strains, and the material properties of the chips are improved to a certain extent. After the cutting is completed , turn off the machine tool, turn off the first ultrasonic power supply and the second ultrasonic power supply, remove the chip retention sample and mark it for subsequent observation, then repeatedly adjust the angle between the fan-shaped extrusion block and the front cutting edge of the tool and the distance between the fan-shaped extrusion block and the tool to perform different variable cutting operations on the workpiece, and determine the opening status of the first ultrasonic power supply and the second ultrasonic power supply according to experimental needs (the first ultrasonic power supply is turned on, the second ultrasonic power supply is turned off, the first ultrasonic power supply is turned off, the second ultrasonic power supply is turned on, the first ultrasonic power supply and the second ultrasonic power supply are both turned on, or the first ultrasonic power supply and the second ultrasonic power supply are both turned off) to study the influence of ultrasonic vibration and the spacing and angle between the extrusion block and the front cutting edge of the tool head on the large strain deformation and material properties of the chip strip.

[0013] In summary, the present invention applies ultrasonic vibration to the cutter head and the extrusion block, so that the chips pass through the gap between the fan-shaped extrusion block and the cutter head. The chips are extruded to produce large strain deformation, thereby improving the material properties of the chips. The distance and angle between the extrusion block and the front cutting edge of the cutter head can be adjusted to study the influence of ultrasonic vibration and the distance and angle between the extrusion block and the front cutting edge of the cutter head on the large strain deformation and material properties of the chip strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 The present invention is a schematic diagram of the assembly of the frame module, the ultrasonic assisted extrusion module and the ultrasonic assisted tool module. Figure 1 .

[0016] Figure 3 The present invention is a schematic diagram of the assembly of the frame module, the ultrasonic assisted extrusion module and the ultrasonic assisted tool module. Figure 2 .

[0017] Figure 4 It is a structural exploded view of the first flange and the rotating long strip plate of the present invention.

[0018] Figure 5 It is a top view of the present invention.

[0019] Figure 6 It is a front view of the angle-adjustable extrusion mechanism of the present invention.

[0020] Figure 7 It is a left side view of the angle-adjustable extrusion mechanism of the present invention.

[0021] Figure 8 yes Figure 6 AA section view.

[0022] Fig. 9 It is a structural schematic diagram of the fan-shaped extrusion block of the present invention.

[0023] Fig.10 It is a structural schematic diagram of the rotating long strip plate of the present invention.

[0024] Fig.11 It is a partial structural schematic diagram of the rotary lever mechanism of the present invention.

[0025] Fig.12 A schematic diagram of the partial structure of the angle-adjustable extrusion mechanism of the present invention. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are further described below with reference to the accompanying drawings.

[0027] like Figure 1-12As shown, an ultrasonic-assisted large strain extrusion cutting device includes a frame plate module, an ultrasonic-assisted extrusion module, an ultrasonic-assisted tool module, a first ultrasonic power supply 1 and a second ultrasonic power supply 2. The frame plate module is fixedly clamped on a machine tool tool holder 3, the ultrasonic-assisted extrusion module and the ultrasonic-assisted tool module are both installed on the frame plate module, the first ultrasonic power supply 1 is electrically connected to the ultrasonic-assisted extrusion module, and the second ultrasonic power supply 2 is electrically connected to the ultrasonic-assisted tool module.

[0028] The frame plate module includes a first back plate 4, a second back plate 5 and a third back plate 6. The first back plate 4 and the second back plate 5 are both vertically arranged in the left-right direction, and the third back plate 6 is vertically arranged in the front-back direction. The left side of the first back plate 4 is integrally formed and fixedly connected with the front side of the third back plate 6, and the right side of the second back plate 5 is fixedly connected to the middle of the left side of the third back plate 6. Several reinforcing plates 7 arranged side by side up and down are fixedly connected between the left side of the rear side of the first back plate 4 and the right side front side of the third back plate 6, and between the right side of the rear side of the second back plate 5 and the rear side of the left side of the third back plate 6. An L-shaped long clamping block 8 for fixing on the machine tool holder 3 is integrally formed and fixedly connected between the lower left side of the rear side of the first back plate 4 and the lower right side front side of the third back plate 6.

[0029] The ultrasonic assisted extrusion module includes a first amplitude transformer 9, a first flange 10, a first transducer 11 and an angle-adjustable extrusion mechanism. The first amplitude transformer 9 is vertically arranged. The upper and lower parts of the right side of the front side of the second back plate 5 are fixedly connected with a first horizontal support 12. Two vertical guide rods 13 arranged side by side on the left and right are fixedly installed between the two first horizontal supports 12. The first flange 10 is horizontally arranged. The rear side of the first flange 10 is integrally formed with two sleeves 14, and the two sleeves 14 are respectively slidably sleeved on the two vertical guide rods 13. The first amplitude transformer 9 is fixedly installed on the first flange 10 through, the first transducer 11 is fixedly installed on the top of the first amplitude transformer 9, the first ultrasonic power supply 1 is electrically connected to the first transducer 11, the angle-adjustable extrusion mechanism is fixedly installed on the bottom of the first amplitude transformer 9, and a rotating lever mechanism for driving the first flange 10 to move up and down is installed on the front side of the second back plate 5.

[0030] The angle-adjustable extrusion mechanism comprises an extrusion housing 15, a fan-shaped extrusion block 16, a worm 17 and a first knob 18. The lower side and the lower front side of the extrusion housing 15 are open. The top plate of the extrusion housing 15 is fixedly connected to the bottom of the first amplitude-changing rod 9 by a fastening bolt 19. The fan-shaped extrusion block 16 is rotatably arranged in the extrusion housing 15. The inner side surfaces of the left and right plates of the extrusion housing 15 are provided with arc-shaped grooves. The outer edges of the left and right surfaces of the fan-shaped extrusion block 16 are integrally formed with arc-shaped protrusions 20. The arc-shaped protrusions 20 on the left and right sides are respectively matched and slidably arranged on the left and right sides. In the arc-shaped grooves on the right side, gear teeth 21 are integrally formed in the middle of the outer circumference of the fan-shaped extrusion block 16 along the circumferential direction. The worm 17 is arranged in an inclined manner in the extrusion shell 15 with the front higher and the rear lower. The front end of the worm 17 passes through and is rotatably connected to the front side plate of the extrusion shell 15, and the rear end of the worm 17 is rotatably installed on the rear side plate of the extrusion shell 15. The worm 17 is meshed and transmission-connected with the gear teeth 21. The first knob 18 is fixedly installed at the front end of the worm 17. A first pointer 22 is fixedly provided on the left side surface of the fan-shaped extrusion block 16, and a first arc-shaped dial 23 is provided on the left side surface of the left plate of the extrusion shell 15.

[0031] The rotating lever mechanism includes a rotating long plate 24, a vertical lead screw 25, a second knob 26, a first slider 27 and a second slider 28. The rotating long plate 24 is arranged in the left-right direction and is parallel to the second back plate 5. The left end of the rotating long plate 24 is integrally provided with a second pointer 29. A first horizontal plug rod 30 is fixedly provided on the left side of the rear side of the rotating long plate 24. A rotating shaft 31 is fixedly provided on the right side of the rear side of the rotating long plate 24. A second horizontal plug rod 32 is fixedly provided on the right end of the front side of the rotating long plate 24. The center line of the rotating shaft 31 is located at the first horizontal plug rod 30. 0 and the center line of the second horizontal plug rod 32, the distance between the center line of the first horizontal plug rod 30 and the center line of the rotating shaft 31 is 120 mm, the distance between the center line of the rotating shaft 31 and the center line of the second horizontal plug rod 32 is 2 mm, a PVC plate 33 is fixedly provided on the left side of the second back plate 5, and a circular arc-shaped long hole 34 that is transparent from front to back is opened on the PVC plate 33, the center of the circular arc-shaped long hole 34 is located on the center line of the rotating shaft 31, and the distance between the upper end of the circular arc-shaped long hole 34 and the lower end of the circular arc-shaped long hole 34 is 120 mm, and the first horizontal plug rod 30 is slidably inserted into the The second back plate 5 is connected to the arc-shaped long hole 34, the rotating shaft 31 is rotatably mounted in the middle of the front side of the second back plate 5, the left side of the front side of the PVC plate 33 is provided with a second arc-shaped dial 35 located on the left side of the arc-shaped long hole 34, the middle of the rear side of the first flange 10 is provided with a runway-shaped blind hole 36, a runway-shaped block 37 is inserted in the runway-shaped blind hole 36, and a plug-in circular hole 38 is opened in the middle of the rear side of the runway-shaped block 37 along the front and rear directions. The second horizontal plug rod 32 is rotatably mounted in the plug-in circular hole 38, and the upper and lower parts of the left side of the front side of the second back plate 5 are fixedly connected with the second horizontal support plate 3 9, the upper and lower ends of the vertical lead screw 25 are rotatably mounted on the two second horizontal support plates 39 and are located on the front side of the rotating long plate 24, the upper end of the vertical lead screw 25 passes upward through the second horizontal support plate 39 on the upper side, the second knob 26 is fixedly mounted on the upper end of the vertical lead screw 25, the vertical lead screw 25 passes through the first slider 27 and is threadedly connected to the first slider 27, the rotating long plate 24 passes through the second slider 28 and is slidably connected to the second slider 28, and the middle part of the front side surface of the second slider 28 is hinged to the middle part of the rear side surface of the first slider 27 through a pin shaft horizontally arranged along the front and rear directions.

[0032] The ultrasonic-assisted tool module includes a second amplitude transformer 40, a second flange 41, a second transducer 42 and a cutter head 43. The second amplitude transformer 40 is vertically arranged, the second flange 41 is horizontally arranged, the rear side of the second flange 41 is fixedly connected to the middle of the front side of the first back plate 4, the second amplitude transformer 40 is fixedly installed on the second flange 41, the second transducer 42 is fixedly installed on the top of the second amplitude transformer 40, the second ultrasonic power supply 2 is electrically connected to the second transducer 42, the cutter head 43 is fixedly installed at the bottom of the second amplitude transformer 40, and the bottom of the fan-shaped extrusion block 16 is provided with a bevel 44 that fits with the front cutting surface of the cutter head 43, and the front side of the bevel 44 is located on the center line of the fan-shaped extrusion block 16.

[0033] The working principle of the present invention is as follows: the L-shaped strip clamping block 8 is fixedly clamped on the machine tool turret 3, so that the entire device is fixed on the machine tool turret 3, and then the first ultrasonic power supply 1 is electrically connected to the first transducer 11, and the second ultrasonic power supply 2 is electrically connected to the second transducer 42, and the position of the machine tool turret 3 is adjusted to align the tool so that the cutter head 43 is in a position suitable for cutting. Initially, the bottom inclined surface 44 of the fan-shaped extrusion block 16 is in contact with the front cutting surface of the cutter head 43, and the second pointer 29 points to the 0 scale value of the second arc-shaped dial 35. According to the experimental needs, the second knob 26 is turned to drive the vertical screw 25 to rotate, and the vertical screw 25 drives the first slider 27 to move downward, and the first slider 27 drives the second slider 28 to move downward, and the second slider 28 drives the rotating strip The plate 24 rotates downward around the rotation axis 31, and the first horizontal insertion rod 30 is slidably connected in the arc-shaped long hole 34, then the second horizontal insertion rod 32 rotates upward around the rotation axis 31, and the second horizontal insertion rod 32 drives the first flange 10 to move upward along the two vertical guide rods 13, thereby adjusting the distance between the fan-shaped extrusion block 16 and the cutter head 43, and recording the scale value of the second pointer 29 pointing to the second arc-shaped dial 35 (the scale value of the second arc-shaped dial 35 is the distance between the fan-shaped extrusion block 16 and the cutter head 43), which is used for comparison in subsequent experiments, and then the first knob 18 is turned to drive the worm 17 to rotate, and the worm 17 is meshed with the gear teeth 21 for transmission connection, and the worm 17 drives the fan-shaped extrusion block 16 in the extrusion shell 15 along the arc-shaped groove and around the front side of the inclined surface 44 The first ultrasonic power source 1 and the second ultrasonic power source 2 are started. After the first ultrasonic power source 1 and the second ultrasonic power source 2 are stable, the first transducer 11 drives the first amplitude rod 9 to vibrate at a high frequency in a specific manner, and the second transducer 42 drives the second amplitude rod 40 to vibrate at a high frequency in a specific manner. Then, the first amplitude rod 9 drives the fan-shaped extrusion block 16 to vibrate at a high frequency in a specific manner, and at the same time, the second amplitude rod 40 drives the cutter head 43 to vibrate at a high frequency in a specific manner. The machine tool is started to cut the workpiece, so that the chips pass through the fan-shaped extrusion block 16 and the cutter head 43. The gap between the head 43, the chips are squeezed to produce large strain deformation, and the material properties of the chips are improved to a certain extent. After the cutting is completed, the machine tool is turned off, the first ultrasonic power supply 1 and the second ultrasonic power supply 2 are turned off, the chip retention sample is taken out and marked for subsequent observation, and then the angle between the fan-shaped extrusion block 16 and the front cutting edge of the tool and the distance between the fan-shaped extrusion block 16 and the tool are repeatedly adjusted to perform cutting operations with different variables on the workpiece, and the opening conditions of the first ultrasonic power supply 1 and the second ultrasonic power supply 2 are determined according to experimental needs (divided into four conditions: the first ultrasonic power supply 1 is turned on, the second ultrasonic power supply 2 is turned off, the first ultrasonic power supply 1 is turned off, the second ultrasonic power supply 2 is turned on, the first ultrasonic power supply 1 and the second ultrasonic power supply 2 are both turned on, or the first ultrasonic power supply 1 and the second ultrasonic power supply 2 are both turned off).It is used to study the influence of ultrasonic vibration and the distance and angle between the extrusion block and the front cutting surface of the cutter head 43 on the large strain deformation and material properties of the chip strip.

[0034] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An ultrasonically assisted large strain extrusion cutting device, characterized in that: It includes a frame plate module, an ultrasonic-assisted extrusion module, an ultrasonic-assisted tool module, a first ultrasonic power supply and a second ultrasonic power supply. The frame plate module is fixedly clamped on the machine tool tool holder. The ultrasonic-assisted extrusion module and the ultrasonic-assisted tool module are both installed on the frame plate module. The first ultrasonic power supply is electrically connected to the ultrasonic-assisted extrusion module, and the second ultrasonic power supply is electrically connected to the ultrasonic-assisted tool module. The ultrasonic-assisted extrusion module includes a first amplitude transformer, a first flange, a first transducer and an angle-adjustable extrusion mechanism, wherein the first amplitude transformer is vertically arranged, the upper right part and the lower part of the front side of the second back plate are fixedly connected with a first horizontal support, two vertical guide rods arranged side by side on the left and right are fixedly installed between the two first horizontal supports, the first flange is horizontally arranged, and the rear side of the first flange is integrally formed with two sleeves fixedly arranged, and the two sleeves are respectively and correspondingly slidably sleeved on the two vertical guide rods, the first amplitude transformer is fixedly installed on the first flange through, the first transducer is fixedly installed on the top of the first amplitude transformer, the first ultrasonic power supply is electrically connected to the first transducer, the angle-adjustable extrusion mechanism is fixedly installed on the bottom of the first amplitude transformer, and a rotating lever mechanism for driving the first flange to move up and down is installed on the front side of the second back plate; The rotating lever mechanism includes a rotating long strip, a vertical screw, a second knob, a first slider and a second slider. The rotating long strip is arranged in the left and right directions and is parallel to the second back plate. The left end of the rotating long strip is integrally provided with a second pointer. A first horizontal plug rod is fixedly provided on the left side of the rear side surface of the rotating long strip, a rotating shaft is fixedly provided on the right side of the rear side surface of the rotating long strip, and a second horizontal plug rod is fixedly provided on the right end of the front side surface of the rotating long strip. The center line of the rotating shaft is located between the center line of the first horizontal plug rod and the center line of the second horizontal plug rod. The distance between the center line of the first horizontal plug rod and the center line of the rotating shaft is 120 mm, and the distance between the center line of the rotating shaft and the center line of the second horizontal plug rod is 2 mm. A PVC plate is fixedly provided on the left side of the second back plate, and a circular arc-shaped long hole that is transparent from front to back is opened on the PVC plate. The center of the circular arc-shaped long hole is located on the center line of the rotating shaft, and the distance between the upper end of the circular arc-shaped long hole and the lower end of the circular arc-shaped long hole is 120 mm. The first horizontal plug rod slides and is inserted into the rotating shaft. The second knob is fixedly mounted on the upper end of the vertical lead screw, the vertical lead screw passes through the first slider and is threadably connected to the second slider, the rotating long plate passes through the second slider and is slidably connected to the second slider, and the middle part of the front side surface of the second slider is hinged to the middle part of the rear side surface of the first slider by a pin shaft horizontally arranged along the front and rear directions.

2. The ultrasonically assisted large strain extrusion cutting device according to claim 1, characterized in that: The frame plate module includes a first back plate, a second back plate and a third back plate. The first back plate and the second back plate are both vertically arranged along the left-right direction, and the third back plate is vertically arranged along the front-back direction. The left side of the first back plate is integrally formed and fixedly connected with the front side of the third back plate, and the right side of the second back plate is fixedly connected to the middle part of the left side of the third back plate. Several reinforcing plates arranged side by side up and down are fixedly connected between the left side of the rear side of the first back plate and the right side front side of the third back plate, and between the right side of the rear side of the second back plate and the rear side of the left side of the third back plate. An L-shaped long clamping block for fixing on a machine tool tool holder is integrally formed and fixedly connected between the lower left side of the rear side of the first back plate and the lower right side front side of the third back plate.

3. The ultrasonically assisted large strain extrusion cutting device according to claim 1, characterized in that: The angle-adjustable extrusion mechanism comprises an extrusion shell, a fan-shaped extrusion block, a worm and a first knob. The lower side and the lower front side of the extrusion shell are open. The top plate of the extrusion shell is fixedly connected to the bottom of the first amplitude rod by fastening bolts. The fan-shaped extrusion block is rotatably arranged in the extrusion shell. The inner sides of the left and right plates of the extrusion shell are provided with arc-shaped grooves. The outer edges of the left and right sides of the fan-shaped extrusion block are integrally formed with arc-shaped protrusions. The arc-shaped protrusions on the left and right sides are respectively matched and slidably arranged in the arc-shaped grooves on the left and right sides. The middle part of the outer circumference of the fan-shaped extrusion block is integrally formed with gear teeth along the circumferential direction. The worm is tilted and arranged in the extrusion shell with a high front and a low rear. The front end of the worm passes through and is rotatably connected to the front side plate of the extrusion shell. The rear end of the worm is rotatably installed on the rear side plate of the extrusion shell. The worm is meshingly connected with the gear teeth. The first knob is fixedly installed on the front end of the worm. The left side of the fan-shaped extrusion block is fixedly provided with a first pointer. The left side of the left plate of the extrusion shell is provided with a first arc-shaped dial.

4. The ultrasonically assisted large strain extrusion cutting device according to claim 1, characterized in that: The ultrasonic-assisted tool module includes a second amplitude transformer, a second flange, a second transducer and a cutter head. The second amplitude transformer is vertically arranged, the second flange is horizontally arranged, the rear side of the second flange is fixedly connected to the middle of the front side of the first back plate, the second amplitude transformer is penetrated and fixedly installed on the second flange, the second transducer is fixedly installed on the top of the second amplitude transformer, the second ultrasonic power supply is electrically connected to the second transducer, the cutter head is fixedly installed on the bottom of the second amplitude transformer, and the bottom of the fan-shaped extrusion block is provided with an inclined surface that fits the front cutting surface of the cutter head, and the front side edge of the inclined surface is located on the center line of the fan-shaped extrusion block.

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