Machining process of knurled part

Abstract

The machining technology comprises the steps that S1, a workpiece is clamped through a clamping mechanism, and the workpiece is coaxially conveyed to a preset position in a machining hole site of a machining disc; s2, the distance between the two knurling cutter assemblies in each knurling mechanism is adjusted according to the distance between the two knurling sections needing to be machined on the workpiece; s3, the workpiece is driven by a motor to rotate uniformly; s4, the driving mechanisms drive the multiple driving mechanisms to synchronously move inwards in the radial direction, so that each knurling tool assembly and the outer circumferential face of the workpiece are rolled, and two knurling sections are formed on the workpiece; s5, the driving mechanisms drive the multiple driving mechanisms to synchronously move outwards in the radial direction again, so that each knurling tool assembly is disengaged from the workpiece; and S6, the motor is stopped, the clamping mechanism makes contact with the workpiece to clamp the workpiece, and the workpiece is taken down. According to the device, the workpiece machining efficiency is improved, and meanwhile, the workpiece machining accuracy and stability are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts, and particularly to a processing technology for knurled parts. Background Art

[0002] In the automotive manufacturing industry, connectors, as key components, undertake the important task of stably and firmly connecting different components together. This connection not only requires structural stability but also must be able to withstand forces and vibrations from all directions to ensure the safety and reliability of the vehicle under various driving conditions. To improve the connection stability between the connector and the connected object, especially to prevent loosening or detachment during long-term use or under extreme working conditions, engineers have designed various improvement measures. Among them, a common practice is to machine a knurled section on the shaft surface of the connector. The knurling process forms a series of regular or irregular raised textures on the metal surface, significantly increasing the circumferential friction between the contact surfaces, thereby improving the anti-torsion force of the part after injection molding. This design is particularly suitable for application scenarios that need to withstand torque or rotational forces. In addition, to further enhance the bearing capacity of the connector in the axial direction, that is, the stability under the action of the pulling force, engineers have also designed an annular groove between two sections of knurling to improve the pulling force of the part after injection molding.

[0003] However, the current processing technology faces a series of challenges when manufacturing such connectors with knurled sections and annular grooves. First, the processing process is complex and time-consuming. The precise machining of knurling and annular grooves requires high-precision machine tools and professional operation skills, which not only increases the production cost but also limits the overall efficiency of the production line. Second, the processing stability is insufficient. Especially during mass production, due to the influence of various factors such as material properties, tool wear, and machine tool accuracy, it is difficult to achieve the consistency of the dimensions and shapes of knurling and annular grooves, thus affecting the performance and quality of the connectors. Summary of the Invention

[0004] Aiming at the above problems existing in the processing of existing workpieces, the present invention aims to provide a processing technology for knurled parts with high efficiency and high stability.

[0005] The specific technical solutions are as follows:

[0006] A knurled part processing technology uses a knurling processing device, comprising: the knurling processing device comprises a processing disk, a plurality of knurling mechanisms and a driving mechanism, the processing disk is coaxially provided with processing position holes, the plurality of knurling mechanisms are distributed along the circumference of the processing disk, and each of the knurling mechanisms can slide radially along the processing disk, each of the knurling mechanisms comprises: a driving block and two groups of knurling cutter assemblies mounted on the driving block, the driving block can be mounted on the processing disk radially slidably, the two groups of knurling cutter assemblies are distributed along the axial direction of the processing disk, and the spacing between the two groups can be adjusted, the driving mechanism is in transmission connection with the plurality of driving blocks, and is used to drive the plurality of driving blocks to synchronously slide radially outward or inward along the processing disk;

[0007] The processing technology includes:

[0008] S1: clamping the workpiece by a clamping mechanism and coaxially sending it to a predetermined position in the machining hole of the machining disk;

[0009] S2: adjusting the distance between the two knurling cutter assemblies in each knurling mechanism according to the distance between the two knurling sections to be processed on the workpiece;

[0010] S3: The workpiece is driven to rotate evenly by the motor;

[0011] S4: the driving mechanism drives the plurality of driving mechanisms to move radially inward synchronously, so that each group of the knurling cutter assemblies rolls against the outer circumferential surface of the workpiece, so that two knurling sections are formed on the workpiece;

[0012] S5: the driving mechanism drives the plurality of driving mechanisms to move radially outward synchronously again, so that each group of the knurling cutter assemblies is out of contact with the workpiece;

[0013] S6: The motor stops, the clamping mechanism contacts the workpiece, and removes the workpiece.

[0014] As a further improvement and optimization of the present solution, a blowing mechanism is also installed on the processing disk, and the blowing mechanism is used to blow away waste chips generated during the processing of the workpiece.

[0015] As a further improvement and optimization of the present solution, the blowing mechanism includes a plurality of nozzles, and the plurality of nozzles are circumferentially installed on the inner wall of the processing hole.

[0016] As a further improvement and optimization of the present solution, each of the knurling mechanisms further includes a turning tool, which is mounted on the driving block and located in the middle of the two knurling tool assemblies, and the distance between the tool head of the turning tool and the center axis of the machining hole is smaller than the distance between the knurling tool assembly and the center axis of the machining hole.

[0017] As a further improvement and optimization of this solution, two groups of the knurling tool assemblies are symmetrically distributed on both sides of the driving block. Each knurling tool assembly includes:

[0018] A tool rest, one end of which is slidably mounted on the driving block along the axial direction of the processing disk;

[0019] A knurling tool wheel, which is rotatably mounted at the other end of the tool rest, and the distance between the cutting head of the turning tool and the central axis of the processing hole position is less than the distance between the knurling tool wheel and the central axis of the processing hole position.

[0020] As a further improvement and optimization of this solution, a bidirectional screw is provided between the two tool rests of the two groups of knurling tool assemblies. The two tool rests are respectively threadedly mounted on the outside of the bidirectional screw. When the bidirectional screw rotates, the two tool rests move closer to or away from each other.

[0021] As a further improvement and optimization of this solution, handles are installed at both ends of the double-threaded screw.

[0022] As a further improvement and optimization of this solution, a rectangular sliding groove is axially penetrated through the driving block along the processing disk;

[0023] One end of each of the two tool rests has a rectangular slider matching the rectangular sliding groove. The two rectangular sliders are respectively slidably mounted on both sides of the rectangular sliding groove, and a scale is provided on each rectangular slider.

[0024] As a further improvement and optimization of this solution, a number of guiding sliding grooves communicating with the processing hole positions are radially arranged on the processing disk, and a number of driving blocks are respectively slidably mounted in the number of guiding sliding grooves.

[0025] As a further improvement and optimization of this solution, the driving mechanism includes:

[0026] A number of eccentric shafts, which are rotatably mounted on the processing disk along the circumferential direction, and an eccentric wheel is eccentrically sleeved and connected to the outside of each eccentric shaft. A driving ring is coaxially sleeved on the outside of each eccentric wheel. A number of first connecting rods are provided between the number of driving rings and the number of driving blocks. One end of each of the number of first connecting rods is connected to the outer circumferential surface of the number of driving rings, and the other end is hinged to the number of driving blocks;

[0027] One of the plurality of eccentric shafts is a first eccentric shaft, an eccentric shaft adjacent to the driving eccentric shaft is a last eccentric shaft, and the plurality of eccentric shafts between the last eccentric shaft and the first eccentric shaft are transmission eccentric shafts, the outside of each transmission eccentric shaft and the outside of the first eccentric shaft are connected to a V-shaped transmission frame, the middle of the V-shaped transmission frame is connected to the transmission eccentric shaft / the first eccentric shaft, and the top of the last eccentric shaft is connected to a transmission rod;

[0028] Wherein, a curved rod is hingedly connected between two adjacent V-shaped transmission frames and between the transmission rod and the V-shaped transmission frame on the adjacent transmission eccentric shaft;

[0029] The driving mechanism also includes a hydraulic cylinder, one end of which is hinged to the processing disk, and the other end of which is connected to one end of the V-shaped transmission frame on the first eccentric shaft.

[0030] Compared with the prior art, the above technical solution has the following positive effects:

[0031] (1) In the present invention, during processing, two groups of knurling tool assemblies in the knurling mechanism respectively and simultaneously perform knurling processing on two knurling sections on the workpiece, thereby improving the processing efficiency. At the same time, the spacing between the two knurling tool assemblies in the same group of knurling tool assemblies can be adjusted to process two knurling sections with different spacings, thereby meeting different processing requirements of the workpiece.

[0032] (2) In the present invention, a plurality of knurling tool assemblies are distributed circumferentially on each knurling section of the workpiece. During knurling, the plurality of knurling tool assemblies of each knurling section roll the workpiece from all directions, so that the workpiece is subjected to uniform force, and the accuracy and stability of workpiece processing are greatly improved.

[0033] (3) In the present invention, the multiple knurling cutter assemblies in the two groups of knurling mechanisms are radially driven by the same driving mechanism, thereby ensuring the consistency of the rolling force of the multiple knurling cutter assemblies and further improving the accuracy and stability of workpiece processing.

[0034] (4) Each knurling mechanism in the present invention also includes a turning tool, which is mounted on the driving block and located in the middle of the two knurling tool assemblies, and the distance between the tool head of the turning tool and the central axis of the processing hole is smaller than the distance between the knurling tool assembly and the central axis of the processing hole. The purpose is that when a plurality of knurling tool assemblies move radially inward, the tool head of the turning tool first contacts and rolls the outer surface of the workpiece to process the annular groove of the workpiece, thereby realizing the knurling processing and the annular processing synchronously, avoiding stopping for tool head replacement or multi-program operation of the machine, and further improving the processing efficiency.

[0035] (5) In the present invention, the driving mechanism uses a hydraulic cylinder to convert the telescopic power of the hydraulic cylinder into the rotational torque of a plurality of eccentric shafts through a plurality of V-shaped transmission frames, a plurality of curved rods, and a transmission rod. The plurality of eccentric shafts drive a plurality of driving blocks to slide synchronously radially inwards or outwards through a plurality of eccentric wheels, a plurality of driving rings, and a plurality of first connecting rods. It not only has a clever structure and low manufacturing cost, but also uses a hydraulic cylinder as the power source and combines the parallel connecting rod and the lever principle for power transmission output, having high power transmission stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of a knurling processing device for a knurling part processing technology of the present invention;

[0037] Figure 2 is an exploded schematic diagram of a knurling processing device for a knurling part processing technology of the present invention;

[0038] Figure 3 is a schematic diagram of a knurling mechanism of a knurling processing device for a knurling part processing technology of the present invention;

[0039] Figure 4 is an exploded schematic diagram of a knurling mechanism of a knurling processing device for a knurling part processing technology of the present invention;

[0040] In the drawings: 1, processing disk; 2, knurling mechanism; 3, driving mechanism; 4, air-blowing mechanism; 11, processing hole positions; 12, rectangular sliding groove; 21, driving block; 22, bidirectional screw; 23, handle; 24, turning tool; 25, knurling tool assembly; 31, hydraulic cylinder; 32, V-shaped transmission frame; 33, curved rod; 34, eccentric wheel; 35, driving ring; 36, first connecting rod; 37, transmission rod; 38, eccentric shaft; 251, tool rest; 252, knurling tool wheel; 253, rectangular slider; 2531, scale. DETAILED DESCRIPTION OF THE INVENTION

[0041] The present invention will be further described below in conjunction with the drawings and specific embodiments, but it is not limited to the present invention.

[0042] Figure 1 is a schematic structural diagram of a knurling processing device for a knurling part processing technology of the present invention, Figure 2 is an exploded schematic diagram of a knurling processing device for a knurling part processing technology of the present invention, Figure 3 is a schematic diagram of a knurling mechanism of a knurling processing device for a knurling part processing technology of the present invention, Figure 4 is an exploded schematic diagram of a knurling mechanism of a knurling processing device for a knurling part processing technology of the present invention, as Figures 1 to 4As shown, a knurling part processing technology of a preferred embodiment is shown, using a knurling processing device, including: the knurling processing device includes a processing disk 1, a plurality of knurling mechanisms 2 and a driving mechanism 3, the processing disk 1 is coaxially provided with processing position holes, the plurality of knurling mechanisms 2 are distributed along the circumference of the processing disk 1, and each knurling mechanism 2 can slide along the radial direction of the processing disk 1, each knurling mechanism 2 includes: a driving block 21 and two groups of knurling knife assemblies 25 installed on the driving block 21, the driving block 21 can be installed on the processing disk 1 to slide radially along the processing disk 1, the two groups of knurling knife assemblies 25 are distributed along the axial direction of the processing disk 1, and the distance between the two groups can be adjusted, and the driving mechanism 3 is connected to the plurality of driving blocks 21 in transmission, and is used to drive the plurality of driving blocks 21 to synchronously slide radially outward or inward along the processing disk 1;

[0043] Processing technology includes:

[0044] S1: Clamp the workpiece by a clamping mechanism and coaxially send it to a predetermined position in the processing hole 11 of the processing disk 1;

[0045] S2: adjusting the distance between the two knurling cutter assemblies 25 in each knurling mechanism 2 according to the distance between the two knurling sections to be processed on the workpiece;

[0046] S3: The workpiece is driven to rotate evenly by the motor;

[0047] S4: the driving mechanism 3 drives the plurality of driving mechanisms 3 to move radially inward synchronously, so that each set of knurling cutter assemblies 25 rolls against the outer circumferential surface of the workpiece, so that two knurling sections are formed on the workpiece;

[0048] S5: the driving mechanism 3 drives the plurality of driving mechanisms 3 to move radially outward synchronously again, so that each group of knurling cutter assemblies 25 is out of contact with the workpiece;

[0049] S6: The motor stops, the clamping mechanism contacts the workpiece, and removes the workpiece.

[0050] In the present embodiment, during processing, the two groups of knurling tool assemblies 25 in the knurling mechanism 2 respectively and simultaneously perform knurling processing on two knurled sections on the workpiece, thereby improving the processing efficiency. At the same time, the spacing between the two knurling tool assemblies 25 in the same group of knurling mechanism 2 can be adjusted to process two knurled sections with different spacings, thereby meeting the different processing requirements of the workpiece.

[0051] In this embodiment, a plurality of knurling tool assemblies 25 are distributed circumferentially on each knurling section of the workpiece. During knurling, the plurality of knurling tool assemblies 25 of each knurling section roll the workpiece from all directions, which not only makes the workpiece evenly stressed, but also greatly improves the accuracy and stability of workpiece processing.

[0052] In this embodiment, several knurling tool assemblies 25 in the two groups of knurling mechanisms 2 are radially driven by the same driving mechanism 3 to ensure the consistency of the rolling force applied by the several knurling tool assemblies 25, and further improve the accuracy and stability of workpiece processing.

[0053] Furthermore, as a preferred embodiment, a blowing mechanism 4 is also installed on the processing disk 1. The blowing mechanism 4 is used to blow away the waste chips generated during the processing of the workpiece, and reduce the influence of the waste chips generated during knurling processing on the knurling processing accuracy.

[0054] Furthermore, as a preferred embodiment, the blowing mechanism 4 includes several air jet heads, and the several air jet heads are circumferentially installed on the inner wall of the processing hole 11.

[0055] More preferably, the air jet head is a circular air jet head, and several air jet holes are provided on the outer circular surface of the air jet head, which can jet air in all directions, and further improve the cleaning effect of waste chips.

[0056] Furthermore, as a preferred embodiment, each knurling mechanism 2 further includes a turning tool 24. The turning tool 24 is installed on the driving block 21 and is located at the middle position between the two knurling tool assemblies 25. And the distance between the cutting head of the turning tool 24 and the central axis of the processing hole 11 is less than the distance between the knurling tool assembly 25 and the central axis of the processing hole 11. The purpose is that when the several knurling tool assemblies 25 move radially inward, the cutting head of the turning tool 24 first contacts and rolls the outer surface of the workpiece to process the annular groove of the workpiece, so as to realize the synchronous progress of knurling processing and annular processing, avoid stopping the machine to change the cutting head or multi-program operation of the machine, and further improve the processing efficiency.

[0057] Furthermore, as a preferred embodiment, the two groups of knurling tool assemblies 25 are symmetrically distributed on both sides of the driving block 21. Each knurling tool assembly 25 includes a tool holder 251 and a knurling tool wheel 252. One end of the tool holder 251 is slidably installed on the driving block 21 along the axial direction of the processing disk 1; the knurling tool wheel 252 is rotatably installed at the other end of the tool holder 251, and the distance between the cutting head of the turning tool 24 and the central axis of the processing hole 11 is less than the distance between the knurling tool wheel 252 and the central axis of the processing hole 11.

[0058] Furthermore, as a preferred embodiment, a bidirectional screw 22 is provided between the two tool holders 251 of the two groups of knurling tool assemblies 25. The two tool holders 251 are respectively threadedly installed on the outside of the bidirectional screw 22. When the bidirectional screw 22 rotates, the two tool holders 251 move closer or farther away.

[0059] More preferably, the bidirectional screw 22 passes through the turning tool 24 to increase the strength of the turning tool 24 itself.

[0060] Furthermore, as a preferred embodiment, handles 23 are installed at both ends of the double-threaded screw.

[0061] Further, as a preferred embodiment, a rectangular sliding groove 12 is axially penetrated through the driving block 21 along the axial direction of the processing disk 1;

[0062] One end of each of the two tool rests 251 has a rectangular slider 253 that matches the rectangular sliding groove 12. The two rectangular sliders are respectively slidably installed on both sides of the rectangular sliding groove 12, and a scale 2531 is provided on each rectangular slider 253 to facilitate the precise adjustment of the positions of a plurality of knurling tool assemblies 25 circumferentially distributed in the same knurling section.

[0063] Further, as a preferred embodiment, a plurality of guiding sliding grooves communicating with the processing hole positions 11 are radially arranged on the processing disk 1, and a plurality of driving blocks 21 are respectively slidably installed in the plurality of guiding sliding grooves.

[0064] Further, as a preferred embodiment, the driving mechanism 3 includes: a plurality of eccentric shafts 38. The plurality of eccentric shafts 38 are rotatably installed on the processing disk 1 along the circumferential direction, and an eccentric wheel 34 is eccentrically sleeved and connected to the outside of each eccentric shaft 38. A driving ring 35 is coaxially sleeved on the outside of each eccentric wheel 34. A plurality of first connecting rods 36 are provided between the plurality of driving rings 35 and the plurality of driving blocks 21. One end of each of the plurality of first connecting rods 36 is connected to the outer circumferential surface of the plurality of driving rings 35, and the other end is hinged to the plurality of driving blocks 21;

[0065] One of the plurality of eccentric shafts 38 is the first eccentric shaft 38, an eccentric shaft 38 adjacent to the driving eccentric shaft 38 is the last eccentric shaft 38, and the plurality of eccentric shafts 38 located between the last eccentric shaft 38 and the first eccentric shaft 38 are transmission eccentric shafts 38. A V-shaped transmission frame 32 is connected to the outside of each transmission eccentric shaft 38 and the outside of the first eccentric shaft 38. The middle of the V-shaped transmission frame 32 is connected to the transmission eccentric shaft 38 / the first eccentric shaft 38, and a transmission rod 37 is connected to the last eccentric shaft 38;

[0066] Wherein, a curved rod 33 is hingedly connected between two adjacent V-shaped transmission frames 32, and between the transmission rod 37 and the V-shaped transmission frame 32 on the transmission eccentric shaft 38 adjacent thereto;

[0067] The driving mechanism 3 further includes a hydraulic cylinder 31. One end of the hydraulic cylinder 31 is hinged to the processing disk 1, and the other end is connected to one end of the V-shaped transmission frame 32 on the first eccentric shaft 38.

[0068] In this embodiment, the driving mechanism 3 uses a hydraulic cylinder 31 to convert the telescopic power of the hydraulic cylinder 31 into the rotational torque of a plurality of eccentric shafts 38 through a plurality of V-shaped transmission frames 32, a plurality of curved rods 33, and a transmission rod 37. The plurality of eccentric shafts 38 drive a plurality of drive blocks 21 to slide synchronously radially inwards or outwards through a plurality of eccentric wheels 34, a plurality of drive rings 35, and a plurality of first connecting rods 36. It not only has a clever structure and low manufacturing cost, but also uses the hydraulic cylinder 31 as the power source and combines the parallel link and lever principle for power transmission output, having high power transmission stability.

[0069] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that any equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A knurled parts processing technology, using a knurling processing device, characterized in that: include: The knurling processing device comprises a processing disk, a plurality of knurling mechanisms and a driving mechanism, the processing disk is coaxially provided with processing position holes, the plurality of knurling mechanisms are distributed along the circumference of the processing disk, and each of the knurling mechanisms can slide radially along the processing disk, each of the knurling mechanisms comprises: a driving block and two groups of knurling cutter assemblies mounted on the driving block, the driving block can be mounted on the processing disk radially slidably, the two groups of knurling cutter assemblies are distributed along the axial direction of the processing disk, and the spacing between the two groups can be adjusted, the driving mechanism is in transmission connection with the plurality of driving blocks, and is used to drive the plurality of driving blocks to synchronously slide radially outward or inward along the processing disk; The processing technology includes: S1: clamping the workpiece by a clamping mechanism and coaxially sending it to a predetermined position in the machining hole of the machining disk; S2: adjusting the distance between the two knurling cutter assemblies in each knurling mechanism according to the distance between the two knurling sections to be processed on the workpiece; S3: The workpiece is driven to rotate evenly by the motor; S4: the driving mechanism drives the plurality of driving mechanisms to move radially inward synchronously, so that each group of the knurling cutter assemblies rolls against the outer circumferential surface of the workpiece, so that two knurling sections are formed on the workpiece; S5: the driving mechanism drives the plurality of driving mechanisms to move radially outward synchronously again, so that each group of the knurling cutter assemblies is out of contact with the workpiece; S6: The motor stops, the clamping mechanism contacts the workpiece, and removes the workpiece.

2. The processing technology of the knurled part according to claim 1 is characterized in that: A blowing mechanism is also installed on the processing disc, and the blowing mechanism is used to blow away waste chips generated during processing of the workpiece.

3. The processing technology of the knurled part according to claim 2 is characterized in that: The blowing mechanism comprises a plurality of air jet heads, and the plurality of air jet heads are circumferentially mounted on the inner wall of the processing hole.

4. The processing technology of the knurled part according to claim 1 is characterized in that: Each of the knurling mechanisms also includes a turning tool, which is mounted on the driving block and located in the middle of the two knurling tool assemblies, and the distance between the tool head of the turning tool and the central axis of the processing hole is smaller than the distance between the knurling tool assembly and the central axis of the processing hole.

5. The processing technology of the knurled part according to claim 4 is characterized in that: The two groups of knurling cutter assemblies are symmetrically distributed on both sides of the driving block, and each of the knurling cutter assemblies includes: A tool holder, one end of which can be slidably mounted on the driving block along the axial direction of the processing disk; A knurled cutter wheel is rotatably mounted on the other end of the tool holder, and the distance between the tool head of the turning tool and the central axis of the processing hole is smaller than the distance between the knurled cutter wheel and the central axis of the processing hole.

6. The processing technology of the knurled part according to claim 5 is characterized in that: A bidirectional screw is provided between the two tool holders in the two groups of the knurling tool assemblies. The two tool holders are respectively threadedly mounted on the outside of the bidirectional screw. When the bidirectional screw rotates, the two tool holders move closer or farther away.

7. The processing technology of the knurled part according to claim 6 is characterized in that: Both ends of the double-ended screw are equipped with handles.

8. The processing technology of the knurled part according to claim 6, characterized in that: The driving block is provided with a rectangular slide groove penetrating along the axial direction of the processing disk; One end of the two tool holders is provided with a rectangular sliding block matching the rectangular sliding groove, the two rectangular sliding blocks are respectively slidably installed on both sides of the rectangular sliding groove, and each of the rectangular sliding blocks is provided with a scale.

9. The processing technology of the knurled part according to any one of claims 4 to 8, characterized in that: A plurality of guide slots connected to the processing holes are radially arranged on the processing disk, and a plurality of driving blocks are slidably installed in the plurality of guide slots respectively.

10. The processing technology of the knurled part according to claim 4, characterized in that: The driving mechanism comprises: A plurality of eccentric shafts, wherein the plurality of eccentric shafts are rotatably mounted on the processing disk along the circumferential direction, and the outside of each of the eccentric shafts is eccentrically sleeved and connected with an eccentric wheel, and the outside of each of the eccentric wheels is coaxially sleeved with a driving ring, and a plurality of first connecting rods are arranged between the plurality of driving rings and the plurality of driving blocks, and one end of the plurality of first connecting rods is connected to the outer circumferential surface of the plurality of driving rings, and the other end is hinged to the plurality of driving blocks; One of the plurality of eccentric shafts is a first eccentric shaft, an eccentric shaft adjacent to the driving eccentric shaft is a last eccentric shaft, and the plurality of eccentric shafts between the last eccentric shaft and the first eccentric shaft are transmission eccentric shafts, the outside of each transmission eccentric shaft and the outside of the first eccentric shaft are connected to a V-shaped transmission frame, the middle of the V-shaped transmission frame is connected to the transmission eccentric shaft / the first eccentric shaft, and the top of the last eccentric shaft is connected to a transmission rod; Wherein, a curved rod is hingedly connected between two adjacent V-shaped transmission frames and between the transmission rod and the V-shaped transmission frame on the adjacent transmission eccentric shaft; The driving mechanism also includes a hydraulic cylinder, one end of which is hinged to the processing disk, and the other end of which is connected to one end of the V-shaped transmission frame on the first eccentric shaft.

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