Auxiliary equipment based on precision gear machining of automobile parts

Abstract

The invention discloses auxiliary equipment based on automobile part precision gear machining, and relates to the technical field of automobile part machining, the auxiliary equipment comprises a machining platform, a machining treatment mechanism is arranged below the machining platform, and the machining treatment mechanism is used for pretreating a gear part before and after machining; the machining treatment mechanism comprises a driving air cylinder installed below the machining platform, a circular ring barrel is installed outside the driving air cylinder and fixedly connected to the lower surface of the machining platform, the outer portion of the circular ring barrel communicates with a branch pipe set, and a cambered surface block is installed on the outer wall of the output shaft end of the driving air cylinder. According to the gear machining device, residual impurities are effectively removed, gear surface scratching or size deviation caused in the machining process is avoided, manual intervention is greatly reduced, the production efficiency is improved, the rejection rate caused by impurity residues is reduced, meanwhile, the equipment layout is simplified, multifunctional integration is achieved, and reliable guarantee is provided for efficient operation of an automobile part machining production line.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive part processing, and specifically relates to an auxiliary device for precision gear processing of automotive parts. Background Art

[0002] In automobile manufacturing, as a core transmission component, the machining accuracy of gears directly affects the vibration noise and reliability of the whole vehicle, and is a key factor affecting product quality. An auxiliary device for precision gear processing of automotive parts, which focuses on the feeding, conveying and machining positioning of workpieces. The device adopts a high-precision hydraulic drive fixture to firmly clamp the gear blank, effectively suppressing vibration and displacement during the machining process, ensuring the stability and high efficiency of the machining process, and significantly improving the accuracy and consistency of gear machining.

[0003] However, the existing technology still has the following defects in specific use: During the machining process of gears, cutting treatment needs to be carried out on the gears. In the cutting process of precision gears for automotive parts, the high-speed cutting and intense friction between the cutting tool and the gear workpiece will generate a large amount of cutting heat and metal chips. These problems will not only affect the tool life and machining accuracy, but also reduce the surface quality of the gears, increase the complexity of subsequent cleaning processes, and become the key factors restricting the high-efficiency and high-quality production of precision gears.

[0004] 1. Compared with the cutting treatment in the prior art, from a thermodynamic perspective, on the one hand, there is intense friction between the cutting tool and the gear blank, and this mechanical friction will convert kinetic energy into heat energy. On the other hand, when the metal material is cut, plastic deformation occurs, and the slip and recombination of its internal crystal lattice also release a large amount of heat. The large accumulation of cutting heat causes the temperature of the workpiece to rise sharply. On the one hand, it will cause thermal expansion of the gear material, resulting in tooth profile errors and dimensional deviations, affecting the meshing accuracy of the gears. On the other hand, high temperature will exacerbate tool wear, reduce the hardness of the tool material and blunt the cutting edge, causing tool chipping or breakage, and significantly reducing the machining efficiency and tool life.

[0005] 2. At the same time, a large amount of chips are also generated during the above-mentioned gear cutting process. This is because when the cutting tool cuts the gear blank, the excess metal material is separated from the matrix to form fragments or particles. The existence of these chips is likely to embed in the machined surface of the gear, forming pits or scratches, seriously affecting the surface finish and quality of the gear. And when the chips adhere to the cutting edge of the tool, it will change the cutting angle and cutting performance of the tool, resulting in cutting force fluctuations and causing vibration, which will not only affect the machining accuracy, but also cause tool chipping and even damage the machining equipment, greatly reducing the machining efficiency and machining stability.

[0006] In view of this, the present invention provides an auxiliary device for precision gear processing of automotive parts to make up for and improve the deficiencies of the existing technology. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides an auxiliary device for precision gear processing of automotive parts to solve the technical problems raised in the above background art.

[0008] To achieve the above object, the technical solution adopted by the present invention is: an auxiliary device for precision gear processing of automotive parts, used for processing gear parts, including a processing platform, and a processing mechanism is arranged below the processing platform, and the processing mechanism is used for preprocessing before and after the processing of gear parts.

[0009] Further, the processing mechanism includes a driving cylinder installed below the processing platform, a circular cylinder is installed outside the driving cylinder, the circular cylinder is fixedly connected to the lower surface of the processing platform, a branch pipe group is communicated with the outside of the circular cylinder, and an arc-shaped block is installed on the outer wall of the output shaft end of the driving cylinder, and the circular cylinder and the arc-shaped block cooperate to absorb the debris generated after the processing of the gear part and discharge it in time.

[0010] Further, a connecting bracket is sleeved on the outer wall of the driving cylinder, one end of the connecting bracket away from the driving cylinder is fixedly connected with a lower curved shell, and an upper curved shell is fixedly connected to the outer wall of the circular cylinder, and an interval area is formed between the lower curved shell and the upper curved shell.

[0011] Further, the branch pipe group is composed of a plurality of bent pipe combinations, and the output ends of the branch pipe group correspond to the groove positions after the processing of the gear part.

[0012] Further, in the initial state, the arc-shaped block and the lower curved shell are on the same inclined plane, and a movable ball is movably connected inside the arc-shaped block.

[0013] Further, elastic sheets are uniformly fixedly connected to the inner side wall of the circular cylinder, the elastic sheets are all located on the moving path of the arc-shaped block, and the elastic sheets are all made of rubber material.

[0014] Further, a movable support mechanism is arranged inside the processing platform, and the movable support mechanism is used to fit and support the inner side wall of the gear part. The movable support mechanism includes a spring sliding shaft below the processing platform. The spring sliding shaft is located on the moving path of the arc-shaped block, and the spring sliding shaft and the arc-shaped block are rotationally connected through a movable ball.

[0015] Furthermore, a protective plate is fixedly connected above the spring sliding shaft. The protective plate is slidably connected to the inner side wall of the gear member. A nut collar is installed outside the spring sliding shaft. Thread grooves are provided at the positions of the outer wall of the spring sliding shaft corresponding to the nut collar. The threaded position of the nut collar and the spring sliding shaft constitutes a ball screw structure.

[0016] Furthermore, an adjustment disc is fixedly connected to the outer wall of the nut collar. Curved grooves are uniformly penetrated through the surface of the adjustment disc. Support bins are slidably connected to the inner walls of the curved grooves.

[0017] Furthermore, the support bins are initially all located at one end close to the nut collar. A limit chassis is slidably connected to the outside of the support bin. The limit chassis is slidably connected to the outer wall of the spring sliding shaft.

[0018] Furthermore, expansion pads are filled inside the support bins. The expansion pads are all made of thermosensitive materials.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By introducing a processing mechanism composed of a driving cylinder, an arc-shaped block, a circular tube, and a branch pipe group below the processing platform, the present device realizes the cleaning management of precision gear processing of automotive parts. Before gear processing, the driving cylinder drives the arc-shaped block to move upward to form a piston structure. Using the thrust generated by the compression of the space inside the circular tube, the processing table is directionally purged through the branch pipe group to effectively remove residual impurities and prevent them from causing scratches or dimensional deviations on the gear surface during processing. After processing, the arc-shaped block returns to its original position and moves downward to form a negative pressure inside the circular tube, accurately adsorbing fine debris in the gear grooves. Through this automated dual-mode cleaning process of "first blowing and then sucking", not only is manual intervention greatly reduced and production efficiency improved, but also the rejection rate caused by residual impurities is reduced. At the same time, the equipment layout is simplified and multi-functional integration is achieved, providing a reliable guarantee for the efficient operation of the automotive parts processing production line.

[0020] Among them, the debris absorbed into the circular tube naturally slides down to the bottom relying on the inclined surface guidance of the arc-shaped block. When the arc-shaped block returns to its original position, automatic chip removal is realized by using the interval area formed by the lower curved shell and the upper curved shell. This design avoids the drawbacks of the traditional collection method where large and small waste materials are mixed. Only fine debris is collected and processed, while large processing residues are left on the table for subsequent centralized recycling and reuse. Moreover, the method of separate collection not only reduces the difficulty and cost of debris treatment, but also improves the resource utilization rate through classified recycling. At the same time, the automated centralized chip removal process reduces the manual cleaning link, avoids waste spillage or omission caused by human operation, ensures a clean and orderly production environment, and improves the intelligent and environmental protection level of the production line.

[0021] Among them, when the arc-shaped block passes through the elastic sheet, the elastic deformation of the rubber material generates vibrations with a controllable amplitude, timely shaking off the debris adsorbed on the outer wall of the arc-shaped block, avoiding the influence of debris accumulation on the sealing performance and movement smoothness between the arc-shaped block and the circular cylinder. This method prevents equipment wear and performance degradation caused by debris accumulation, extends the service life of core components such as the arc-shaped block and the circular cylinder. At the same time, continuous and stable vibration cleaning ensures the long-term reliable operation of the arc-shaped block and the circular cylinder, avoiding secondary pollution or reduced cleaning efficiency caused by cleaning failure, thereby reducing the equipment maintenance frequency and downtime.

[0022] (2) By linking and coordinating the movement of the arc-shaped block with the movable support mechanism, the device achieves highly automated and adaptive adjustment during the clamping process of the gear part. While the arc-shaped block moves upward, the contact between the movable ball and the sliding shaft triggers the upward movement of the sliding shaft. With the ball screw structure formed by the nut sleeve and the sliding shaft, the linear motion is converted into the rotational motion of the adjustment disk, thereby driving multiple support bins to expand outward and closely fit the inner wall of the gear part to complete precise clamping. Through this design, the cleaning pretreatment process and the clamping process are cleverly integrated, avoiding additional operation steps and time consumption in the traditional clamping method, significantly improving production efficiency. At the same time, the automatic contraction function of the spring sliding shaft after the arc-shaped block resets realizes the rapid unlocking of the gear part, simplifies the disassembly process, makes the clamping and disassembly processes without manual intervention, effectively reduces the labor intensity and human operation error, and provides a reliable guarantee for the efficient and stable processing of precision gears for automotive parts.

[0023] Among them, during the gear processing, with a large amount of heat generated during processing, the expansion pad can quickly absorb heat and undergo thermal expansion, automatically adjusting the degree of fit with the inner wall of the gear part, compensating for the clamping looseness problem caused by thermal deformation. Through this thermosensitive adaptive adjustment method, not only the clamping accuracy of the gear in the high-temperature processing environment is ensured, but also the force during the processing can be effectively dispersed, reducing the deformation of the gear caused by uneven force. In addition, the reversible characteristic of the thermosensitive material enables the expansion pad to return to its initial state after cooling, facilitating the disassembly and repeated clamping of the gear part, improving both the reliability of the clamping system and its service life, and reducing the maintenance cost. Brief Description of the Drawings

[0024] Figure 1 is the front perspective structural schematic diagram of the present invention; Figure 2 is the three-dimensional structural schematic diagram of the processing mechanism of the present invention; Figure 3 is the three-dimensional structural schematic diagram inside the circular cylinder of the present invention; Figure 4 is the three-dimensional structural schematic diagram of the arc-shaped block of the present invention; Figure 5Schematic top-down three-dimensional structure diagram of the present invention; Figure 6 Schematic three-dimensional structure diagram of the gear part of the present invention after processing; Figure 7 Schematic three-dimensional structure diagram of the branch pipe group of the present invention; Figure 8 Schematic three-dimensional structure diagram of the movable support mechanism of the present invention; Figure 9 Exploded view of the movable support mechanism of the present invention; Figure 10 Schematic three-dimensional structure diagram of the expansion pad of the present invention.

[0025] The reference numerals in the figure are: 1. Processing platform; 11. Gear part; 2. Processing mechanism; 21. Driving cylinder; 22. Connecting bracket; 23. Lower curved shell; 24. Circular cylinder; 25. Upper curved shell; 26. Branch pipe group; 27. Arc-shaped block; 28. Movable ball; 29. Elastic sheet; 3. Movable support mechanism; 31. Spring sliding shaft; 32. Protective plate; 33. Nut sleeve; 34. Adjusting disk; 35. Bending groove; 36. Support bin; 37. Limit chassis; 38. Expansion pad. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention; It should be noted that the structures and working principles of the above-mentioned devices such as the processing platform 1 and the gear part 11 belong to the prior art and will not be elaborated herein. Embodiment 1

[0027] Please refer to Figure 1 and Figure 2 As shown, an auxiliary device for precision gear processing of automotive parts, used for processing the gear part 11, includes a processing platform 1, and a processing mechanism 2 is arranged below the processing platform 1. The processing mechanism 2 is used for preprocessing the gear part 11 before and after processing.

[0028] Please refer to Figures 2 to 7As shown in the figure, the processing mechanism 2 includes a driving cylinder 21 installed below the processing platform 1. An annular cylinder 24 is installed outside the driving cylinder 21. The annular cylinder 24 is fixedly connected to the lower surface of the processing platform 1. A branch pipe group 26 is communicated with the outside of the annular cylinder 24. An arc-shaped block 27 is installed on the outer wall of the output shaft end of the driving cylinder 21. The annular cylinder 24 and the arc-shaped block 27 cooperate to absorb the debris generated after the processing of the gear member 11 and discharge it in time.

[0029] It should be noted that a connecting bracket 22 is sleeved on the outer wall of the driving cylinder 21. One end of the connecting bracket 22 away from the driving cylinder 21 is fixedly connected with a lower curved shell 23. The outer wall of the annular cylinder 24 is fixedly connected with an upper curved shell 25. An interval area is formed between the lower curved shell 23 and the upper curved shell 25. The branch pipe group 26 is composed of a plurality of bent pipes combined. And the output ends of the branch pipe group 26 all correspond to the groove positions after the processing of the gear member 11. In the initial state, the arc-shaped block 27 and the lower curved shell 23 are on the same inclined plane. An activity ball 28 is movably connected inside the arc-shaped block 27. Elastic sheets 29 are uniformly fixedly connected to the inner side wall of the annular cylinder 24. The elastic sheets 29 are all located on the moving path of the arc-shaped block 27, and the elastic sheets 29 are all made of rubber material.

[0030] Specifically, before the processing of the gear member 11: When preparing to process the gear member 11, the driving cylinder 21 is started, and its output shaft drives the arc-shaped block 27 to move upward. As the arc-shaped block 27 moves upward, a simple piston structure is formed between it and the annular cylinder 24, making the internal space of the annular cylinder 24 gradually smaller. Since the gas is compressed and the internal pressure increases, the thrust generated in the annular cylinder 24 is discharged through the externally communicated branch pipe group 26. The branch pipe group 26 is composed of a plurality of bent pipes combined, and its output end corresponds to the tabletop of the processing platform 1. Therefore, the thrust is converted into air flow to blow and clean the tabletop of the processing platform 1, and the impurities, debris, etc. remaining on the tabletop are removed in advance to avoid these impurities affecting the processing accuracy of the gear member 11. At this time, during the upward movement of the arc-shaped block 27, it gradually moves away from the initial position and is no longer on the same inclined plane as the lower curved shell 23. And during the movement, the arc-shaped block 27 has not contacted the elastic sheet 29 located on its moving path.

[0031] During the processing of the gear member 11: When the arc-shaped block 27 moves to the specified position, the driving cylinder 21 maintains the current state to provide a stable working environment for the processing of the gear member 11. At this time, the branch pipe group 26 stops blowing air, and the processing platform 1 is in a clean state, and the precise processing of the gear member 11 can be carried out.

[0032] After the gear part 11 is processed: After the processing is completed, the driving cylinder 21 drives the arc-shaped block 27 to move back, that is, the arc-shaped block 27 starts to move downward. During the downward movement of the arc-shaped block 27, since the output ends of the branch pipe group 26 correspond to the groove positions of the gear part 11 after processing, and as the arc-shaped block 27 moves downward, the space inside the circular tube 24 gradually becomes larger, generating suction force inside. This suction force acts on the groove positions of the gear part 11 after processing through the branch pipe group 26, thereby absorbing the debris generated after processing. At the same time, during the downward reset movement of the arc-shaped block 27, it will pass through the area of the elastic sheet 29 fixedly connected to the inner side wall of the circular tube 24 evenly. Since the elastic sheet 29 is made of rubber material, when the arc-shaped block 27 passes by, it will squeeze the elastic sheet 29, causing it to deform. And the reaction force of the elastic sheet 29 will cause the arc-shaped block 27 to vibrate slightly. This vibration can prevent debris from adhering to and accumulating on the outer wall of the arc-shaped block 27, ensuring the cleanliness of the outer wall of the arc-shaped block 27 for subsequent smooth operation. This design avoids the disadvantages of the traditional collection method where large and small waste materials are mixed. It only collects and processes fine debris, while leaving large processing residues on the table for subsequent centralized recycling and reuse. Moreover, the method of separate collection not only reduces the difficulty and cost of debris treatment but also improves the resource utilization rate through classified recycling.

[0033] Debris discharge process: Due to the overall inclined surface shape of the arc-shaped block 27, the debris absorbed into the inside of the circular tube 24 will slide along the outer wall of the arc-shaped block 27 to the bottom of the arc-shaped block 27. When the entire arc-shaped block 27 moves to its initial position, since the arc-shaped block 27 and the lower curved shell 23 are on the same inclined plane in the initial state, and the outer wall of the circular tube 24 is fixedly connected with the upper curved shell 25, a spacer area is formed between the lower curved shell 23 and the upper curved shell 25. At this time, the debris previously accumulated at the bottom of the arc-shaped block 27 will, under the action of gravity, be discharged through the spacer area, thereby realizing the centralized collection of debris. Embodiment 2

[0034] On the basis of Embodiment 1, please refer to Figures 7 to 10 As shown, an active support mechanism 3 is arranged inside the processing platform 1. The active support mechanism 3 is used to fit and support the inner side wall of the gear part 11. The active support mechanism 3 includes a spring sliding shaft 31 below the processing platform 1. The spring sliding shaft 31 is located on the movement path of the arc-shaped block 27, and the spring sliding shaft 31 and the arc-shaped block 27 are rotatably connected through a movable ball 28.

[0035] It should be noted that a protective plate 32 is fixedly connected above the spring sliding shaft 31. The protective plate 32 is slidably connected to the inner side wall of the gear member 11. A nut sleeve 33 is installed outside the spring sliding shaft 31. Thread grooves are provided at the positions of the outer wall of the spring sliding shaft 31 corresponding to the nut sleeve 33. The threaded position of the nut sleeve 33 and the spring sliding shaft 31 constitutes a ball screw structure. An adjusting disk 34 is fixedly connected to the outer wall of the nut sleeve 33. Curved grooves 35 are evenly penetrated through the surface of the adjusting disk 34. Support bins 36 are slidably connected to the inner walls of the curved grooves 35. The support bins 36 are initially located at one end close to the nut sleeve 33. A limit chassis 37 is slidably connected to the outside of the support bins 36. The limit chassis 37 is slidably connected to the outer wall of the spring sliding shaft 31. Expansion pads 38 are filled inside the support bins 36. The expansion pads 38 are all made of thermosensitive materials.

[0036] Specifically, when the driving cylinder 21 is started and drives the arc-shaped block 27 to move upward, the movable ball 28 inside the arc-shaped block 27 contacts the spring sliding shaft 31. As the arc-shaped block 27 continues to move upward, under the constraint of the inner wall of the arc-shaped block 27, the movable ball 28 rolls along the arc surface and pushes the spring sliding shaft 31 to move upward against its own spring force. Since the nut sleeve 33 outside the spring sliding shaft 31 is connected to the spring sliding shaft 31 through a ball screw structure, the linear upward movement of the spring sliding shaft 31 is converted into the rotational movement of the nut sleeve 33 through thread transmission, and then drives the adjusting disk 34 fixed to the outer wall of the nut sleeve 33 to rotate synchronously. The curved grooves 35 on the surface of the adjusting disk 34 are spirally distributed. When the adjusting disk 34 rotates, under the guiding action of the inner wall of the curved groove 35, the support bins 36 move gradually outward from the initial contracted position close to the nut sleeve 33 along the curved groove 35. During this process, the support bins 36 are restricted by the limit chassis 37 to ensure that they can only move in the radial direction of the spring sliding shaft 31. As the support bins 36 expand outward, the protective plate 32 at their top gradually fits the inner side wall of the gear member 11. Finally, multiple support bins 36 jointly form a tight support for the gear member 11, completing the clamping and fixing of the gear member 11. At this time, the spring sliding shaft 31 is in the upward movement state, and the support bins 36 are in the expanded state, providing stable support for gear processing.

[0037] Gear member 11 processing process: During the processing of the gear member 11, the driving cylinder 21 keeps the position of the arc-shaped block 27 unchanged, and the spring sliding shaft 31 and the support bins 36 also maintain the current state. Since the expansion pads 38 filled inside the support bins 36 are made of thermosensitive materials, the heat generated during the processing will cause the expansion pads 38 to absorb heat and thermally expand. The expanded expansion pads 38 further squeeze the inner side wall of the gear member 11, dynamically compensating for the gaps caused by processing stress or thermal deformation, and continuously enhancing the support effect on the gear member 11 to ensure the stability and processing accuracy of the gear member 11 during the processing.

[0038] Disassembly process of the gear part 11 after machining: When the machining of the gear part 11 is completed, the driving cylinder 21 drives the arc-shaped block 27 to move downward and reset. The movable ball 28 loses the upward thrust of the arc-shaped block 27, and the spring sliding shaft 31 moves downward and resets under the action of its own spring elasticity. As the spring sliding shaft 31 moves downward, the nut sleeve 33 and the adjusting disc 34 rotate in the opposite direction. Under the guidance of the bending groove 35, the support bin 36 moves and contracts along the bending groove 35 towards the direction close to the nut sleeve 33. The protective plate 32 gradually separates from the inner wall of the gear part 11. The support bin 36 finally returns to the initial contracted position, realizing the unlocking of the gear part 11. At this time, the operator can easily take out the machined gear part 11, and the entire movable support mechanism 3 returns to the initial state, waiting for the next clamping task. By driving the movement and reset of the arc-shaped block 27 by the driving cylinder 21, each component of the movable support mechanism 3 realizes the full-process automatic operation of the gear part 11 from clamping and fixing to adaptive support and then to unlocking and disassembly through mechanical transmission and the characteristics of thermosensitive materials. This not only improves production efficiency but also significantly enhances the stability and machining accuracy during gear machining.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for precision gear machining of automotive parts, used for machining a gear part (11), including a machining platform (1), characterized in that: A processing mechanism (2) is arranged below the processing platform (1), and the processing mechanism (2) is used for preprocessing the gear part (11) before and after processing. The processing mechanism (2) includes a driving cylinder (21) installed below the processing platform (1). An annular cylinder (24) is installed outside the driving cylinder (21). The annular cylinder (24) is fixedly connected to the lower surface of the processing platform (1). A branch pipe group (26) is communicated with the outside of the annular cylinder (24). An arc-shaped block (27) is installed on the outer wall of the output shaft end of the driving cylinder (21). The annular cylinder (24) and the arc-shaped block (27) cooperate to absorb the debris generated after processing the gear part (11) and discharge it in time.

2. The auxiliary equipment for precision gear machining of automotive parts according to claim 1, wherein: A connecting bracket (22) is sleeved on the outer wall of the driving cylinder (21). One end of the connecting bracket (22) far away from the driving cylinder (21) is fixedly connected with a lower curved shell (23). An upper curved shell (25) is fixedly connected to the outer wall of the annular cylinder (24). A spacing area is formed between the lower curved shell (23) and the upper curved shell (25).

3. An auxiliary device for precision gear machining of automotive parts according to claim 1, characterized in that: The branch pipe group (26) is composed of a plurality of bent pipe combinations, and the output ends of the branch pipe group (26) correspond to the groove positions after processing the gear part (11).

4. An auxiliary device for precision gear machining of automotive parts according to claim 1, characterized in that: In the initial state, the arc-shaped block (27) and the lower curved shell (23) are on the same inclined plane. A movable ball (28) is movably connected inside the arc-shaped block (27).

5. An auxiliary device for precision gear machining of automotive parts according to claim 1, characterized in that: Elastic sheets (29) are uniformly fixedly connected to the inner side wall of the annular cylinder (24). The elastic sheets (29) are all located on the moving path of the arc-shaped block (27), and the elastic sheets (29) are all made of rubber material.

6. An auxiliary device for precision gear machining of automotive parts according to claim 1, characterized in that: An active support mechanism (3) is arranged inside the processing platform (1). The active support mechanism (3) is used for fitting and supporting the inner side wall of the gear part (11). The active support mechanism (3) includes a spring sliding shaft (31) below the processing platform (1). The spring sliding shaft (31) is located on the moving path of the arc-shaped block (27), and the spring sliding shaft (31) and the arc-shaped block (27) are rotationally connected through the movable ball (28).

7. An auxiliary device for precision gear machining of automotive parts according to claim 6, characterized in that: A protective plate (32) is fixedly connected above the spring sliding shaft (31). The protective plate (32) is slidably connected to the inner side wall of the gear part (11). A nut sleeve (33) is installed outside the spring sliding shaft (31). Thread grooves are formed at the positions of the spring sliding shaft (31) corresponding to the nut sleeve (33). The nut sleeve (33) and the threaded position of the spring sliding shaft (31) form a ball screw structure.

8. An auxiliary device for precision gear processing of automotive parts according to claim 7, characterized in that: An adjusting disc (34) is fixedly connected to the outer wall of the nut sleeve (33). Curved grooves (35) are uniformly penetrated on the surface of the adjusting disc (34). Support bins (36) are slidably connected to the inner walls of the curved grooves (35).

9. An auxiliary device for precision gear machining of automotive parts according to claim 8, characterized in that: The support bins (36) are initially all located at one end close to the nut sleeve (33). A limiting chassis (37) is slidably connected to the outside of the support bin (36). The limiting chassis (37) is slidably connected to the outer wall of the spring sliding shaft (31).

10. An auxiliary device for precision gear machining of automotive parts according to claim 8, characterized in that: The interior of the support bin (36) is filled with expansion pads (38), and the expansion pads (38) are all made of thermosensitive materials.

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