Machining forming device and machining method for transmission gear of automobile gearbox

Abstract

The invention relates to the technical field of gear machining, in particular to an automobile gearbox transmission gear machining forming device which comprises a machining table, and a machining mechanism is arranged on the machining table and used for gear machining. A vertical frame is fixed to the top rear end of the machining table. The positioning assembly comprises a plurality of circular plate seats which are circumferentially arranged on the turntable, a main hanging rod is longitudinally and fixedly arranged at the rear end of the interior of each circular plate seat in a penetrating manner, discs are rotatably mounted at the upper and lower ends of each circular plate seat, a plurality of arc-shaped grooves which are circumferentially formed are formed in each disc, sliding blocks are slidably mounted in the arc-shaped grooves, and sliding strips are rotatably mounted on the sliding blocks; the centers of the gears automatically coincide through internal and external synchronous centering clamping, so that the positioning precision and the clamping rigidity are improved; and when the turntable rotates, the workpiece is loosened and is convenient to assemble and disassemble, so that the influence of positioning errors is avoided.

Description

Technical Field

[0001] This invention relates to the field of gear processing technology, specifically to a processing and forming device and method for automotive transmission gears. Background Technology

[0002] The transmission gears of an automotive gearbox are key components in the automotive transmission system. Their machining accuracy directly affects the transmission efficiency, noise level, and service life of the gearbox. With the development of the automotive industry, higher requirements have been placed on the machining quality and production efficiency of transmission gears. In the gear machining process, the end face, as one of the reference surfaces of the gear, has a significant impact on the assembly and operational stability of the gear. According to the publication number CN121514619A, a tooling fixture for gear processing, the disclosed technology includes a base, a vertical plate fixed to the upper surface of the base, three circumferentially distributed expansion blocks on one side of the vertical plate, which form a complete cylinder when they abut against each other, a guide block slidably connected to the vertical plate on the side of the expansion block near the vertical plate, a plug rod fixed inside the expansion block, the end of the plug rod near the guide block fixed to the guide block, a screw threadedly connected to the guide block, the three expansion blocks moving away from or towards each other as the three screws rotate simultaneously, the gear being fitted onto the three expansion blocks, and after positioning, the three guide blocks moving away from each other as the three screws rotate simultaneously, thereby causing the three expansion blocks to move away from each other and abut against the inner ring of the gear, thus fixing the gear on the three expansion blocks, reducing gear offset during fixing, and ensuring accurate positioning during gear processing and improving processing accuracy. In existing gear processing equipment, the external positioning clamping mechanism and the internal positioning support mechanism are connected to different power sources. When the gear needs to be clamped, the two power sources receive control signals and drive the external positioning component to move inward and the internal positioning component to move outward, respectively. Due to the difference in response time between the two power sources and the difficulty in achieving perfect synchronization of movement speed, the timing of the contact between the external positioning component and the outer wall of the gear and the timing of the contact between the internal positioning component and the inner wall of the gear are different. The side that contacts first applies a force to the gear, causing a slight displacement. By the time the other side contacts again, the center of the gear has already deviated from the original positioning reference position. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a processing and forming device and method for automotive transmission gears. By using internal and external synchronous centering clamping, the gear centers are automatically aligned, improving positioning accuracy and clamping rigidity. The clamping action is performed only at the processing station, and the workpiece is released when the turntable rotates for easy loading and unloading, avoiding the impact of positioning errors.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a processing and forming device for automotive transmission gears, comprising a processing table, wherein a processing mechanism is provided on the processing table for gear processing, the processing mechanism comprising: The main components include a turntable mounted on the upper part of the processing table via a cam divider, and a vertical frame fixed to the rear end of the top of the processing table; The positioning assembly includes several circular plate seats arranged circumferentially on a turntable. A main hanging rod is fixed longitudinally through the rear end of each circular plate seat. Circular disks are rotatably mounted at both the upper and lower ends of each circular plate seat. Several arc-shaped grooves are opened inside the circular disks. Slider blocks are slidably mounted inside the arc-shaped grooves. Slider bars are rotatably mounted on the sliders. Circular covers are fixed at both the upper and lower ends of each circular plate seat. Several straight grooves are opened inside the circular covers, and the slide bars are slidably mounted inside the straight grooves. An outer positioning head is mounted on the top of the upper slide bar. An extension plate is fixed to the outer end of the circular disk. A secondary hanging rod is fixed to the extension plate. A tension spring is connected to the secondary hanging rod, and the other end of the tension spring is connected to the main hanging rod. A lower positioning head is mounted at the bottom of the lower slide bar. An adjusting head is slidably mounted on the upper side of the inner end of the lower positioning head. A support ring is fixed in the middle of the circular plate seat. The power unit is mounted on the main component and is used to control the extension plate to drive the disk to rotate.

[0005] Preferably, the power assembly includes a horizontal plate fixed to the rear end of the upright, a cylinder installed at the front end of the horizontal plate, a horizontal frame fixed at the output end of the cylinder, balance bars fixed on both the left and right sides of the front end of the horizontal frame, and the balance bars are slidably installed through the upright. A bearing is fixed at the front end of the balance bar, and a roller is rotatably installed inside the bearing.

[0006] Preferably, the positioning assembly further includes a threaded rod rotatably installed inside the inner end of the lower positioning head, and the lower end of the adjusting head is threadedly installed with the threaded rod, and the end of the threaded rod is provided with an internal hexagonal hole.

[0007] Preferably, the positioning component further includes a plurality of connecting blocks fixed to the top and bottom circumference of the circular plate base, and the circular cover is fixed to the connecting blocks.

[0008] Preferably, the positioning assembly further includes a plurality of rod seats fixed to the bottom circumference of the circular plate base, and the rod seats are fixed to the top of the turntable.

[0009] Preferably, the power assembly is located directly behind the turntable. When the circular plate seat rotates to the bottom of the grinder, the rollers and the extension plate cooperate to drive the disc to rotate, causing the outer positioning head to move inward and the adjusting head on the lower positioning head to move outward, thereby achieving synchronous clamping of the gears inside and out.

[0010] Preferably, one end of the tension spring is hooked onto the main hanging rod, and the other end is hooked onto the auxiliary hanging rod, and the axis of the tension spring forms an acute angle with the radial direction of the circular plate seat.

[0011] Preferably, the inner wall of the outer positioning head is an arc surface, and the axis of the arc surface coincides with the axis of the circular plate seat; the outer wall of the adjusting head is an arc surface, and the axis of the arc surface coincides with the axis of the circular plate seat.

[0012] Preferably, the main component further includes a three-axis module mounted on the upper end of the frame, and a grinder is installed at the execution end of the three-axis module.

[0013] This invention also discloses a processing method for an automotive transmission gear forming device, comprising the following steps: S1, place the gear on the support ring at the loading and unloading station, and the turntable rotates intermittently to send the gear to the grinding station; S2, after the gear is in place, the cylinder drives the roller to push the extension plate, causing the disc to rotate and drive the outer positioning head to press the outer wall of the gear inward through the arc groove and slide bar, and the adjusting head to support the inner wall of the gear outward, so as to achieve synchronous clamping inside and outside; S3, the three-axis module drives the grinding machine to grind the end face of the gear. After completion, the cylinder resets, the tension spring causes the disc to rotate in the opposite direction, the outer positioning head and the adjusting head retract to release the gear, and the turntable rotates the processed gear out.

[0014] This invention provides a processing apparatus and method for machining automotive transmission gears. Compared with the prior art, it has the following advantages: 1. By using internal and external synchronous centering clamping, the center of the gear automatically coincides with the center of the circular plate seat, which significantly improves the positioning accuracy and clamping rigidity. The inner side wall of the outer positioning head and the outer side wall of the adjusting head are both set as arc surfaces coaxial with the circular plate seat. When clamping, the arc surface fits against the inner and outer walls of the gear, automatically adjusting the center of the gear to the position that coincides with the axis of the circular plate seat. At the same time, the contact stress is evenly distributed, avoiding excessive local pressure that could damage the gear surface, and effectively ensuring the stability and processing quality of the gear end face during machining.

[0015] 2. The clamping action only occurs after the workpiece has moved to the grinding station, ensuring the workpiece is in a released state during the turntable's rotation, greatly facilitating loading and unloading operations. The clamping process and turntable positioning do not interfere with each other, avoiding the impact of turntable stop position errors on clamping accuracy. Only the circular plate holder in the grinding station is clamped by the rollers; other stations are in a released state under the action of tension springs. The power unit remains stationary, resulting in a simple and reliable structure that facilitates air circuit connection and maintenance.

[0016] 3. The threaded rod adjustment mechanism enables the same positioning assembly to adapt to gears of different specifications. Changing the initial length of the adjusting head causes a corresponding change in the initial angle of the disc, which in turn drives a synchronous change in the initial radial position of the outer positioning head, thus adapting to the machining of gears with different inner and outer diameters. The connecting block creates a gap between the round cover and the round plate seat, providing clearance for disc rotation. The rod seat supports the round plate seat above the turntable to avoid motion interference. The obliquely arranged tension springs consistently generate effective restoring torque. The overall structure is compact and easy to adjust and maintain. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the upper part of the positioning component in this invention; Figure 3 This is a schematic diagram of the lower end of the positioning component in this invention; Figure 4 This is a schematic diagram of the disassembled structure of the positioning component in this invention; Figure 5 This is a schematic diagram of the upper structure inside the positioning component in this invention; Figure 6 This is a schematic diagram of the lower end structure inside the positioning component in this invention; Figure 7 This is a schematic diagram of the structure of the upper end of the circular plate base in this invention; Figure 8 This is a schematic diagram of the structure of the lower end of the circular plate base in this invention; Figure 9 This is a schematic cross-sectional view of the lower positioning head in this invention; Figure 10 This is a schematic diagram of the power component in this invention.

[0018] In the diagram: 1. Machining table; 2. Machining mechanism; 21. Main component; 211. Turntable; 212. Stand; 213. Three-axis module; 214. Grinding machine; 22. Positioning component; 221. Round plate seat; 222. Main hanging rod; 223. Disc; 224. Arc groove; 225. Slider; 226. Sliding bar; 227. Round cover; 228. Straight groove; 229. Outer positioning head; 2210. Extension plate; 2211. Secondary hanging rod; 2212. Tension spring; 2213. Lower positioning head; 2214. Adjusting head; 2215. Support ring; 2216. Threaded rod; 2217. Connecting block; 2218. Rod seat; 23. Power component; 231. Horizontal plate; 232. Cylinder; 233. Horizontal frame; 234. Balance bar; 235. Shaft seat; 236. Roller. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 - Figure 10 The present invention provides a technical solution: a processing and forming device for automotive transmission gears, comprising a processing table 1, on which a processing mechanism 2 is provided for gear processing, the processing mechanism 2 comprising: The main component 21 includes a turntable 211 mounted on the upper end of the processing table 1 via a cam divider, and a stand 212 fixed to the rear end of the top of the processing table 1. The positioning component 22 includes several circular plate seats 221 arranged circumferentially on the turntable 211. A main hanging rod 222 is longitudinally fixed through the rear end of each circular plate seat 221. A disc 223 is rotatably mounted at both the upper and lower ends of each circular plate seat 221. Several arc-shaped grooves 224 are circumferentially arranged inside each disc 223. A slider 225 is slidably mounted inside each arc-shaped groove 224. A slide bar 226 is rotatably mounted on each slider 225. Circular covers 227 are fixed at both the upper and lower ends of each circular plate seat 221. Several straight grooves 228 are circumferentially arranged inside each circular cover 227. The slide bar 226 is slidably installed inside the straight groove 228. The top of the upper slide bar 226 is equipped with an outer positioning head 229. An extension plate 2210 is fixed to the outer end of the disc 223. A secondary hanging rod 2211 is fixed on the extension plate 2210. A tension spring 2212 is connected to the secondary hanging rod 2211, and the other end of the tension spring 2212 is connected to the main hanging rod 222. A lower positioning head 2213 is installed at the bottom of the lower slide bar 226. An adjusting head 2214 is slidably installed on the upper side of the inner end of the lower positioning head 2213. A support ring 2215 is fixed in the middle of the inside of the circular plate seat 221. The power unit 23 is mounted on the main body component 21 and is used to control the extension plate 2210 to drive the disk 223 to rotate.

[0021] Specifically, the power assembly 23 includes a horizontal plate 231 fixed to the rear end of the upright 212, a cylinder 232 installed at the front end of the horizontal plate 231, a horizontal frame 233 fixed at the output end of the cylinder 232, a balance bar 234 fixed on both the left and right sides of the front end of the horizontal frame 233, and the balance bar 234 is slidably installed through the upright 212, a bearing 235 fixed at the front end of the balance bar 234, and a roller 236 rotatably installed inside the bearing 235.

[0022] In this embodiment, the cam divider on the processing table 1 drives the turntable 211 to rotate intermittently, causing several positioning components 22, each holding a gear to be processed, to pass sequentially through the grinding station located directly behind. When the positioning component 22 rotates to the grinding station, the cylinder 232 pushes the crossbeam 233, causing the balance bar 234 to slide forward along the upright 212. The roller 236 moves forward and contacts the extension plate 2210, continuing to push the extension plate 2210 forward. The extension plate 2210 drives the disc 223 to rotate around the circular plate seat 221. When the disc 223 rotates, the arc-shaped groove 224 inside it drives the slider 225 to slide along the arc-shaped groove 224. The slider 225 drives the slide bar 226 to move radially along the straight groove 228 on the round cover 227. The upper slide bar 226 drives the outer positioning head 229 to move towards the center of the round plate seat 221 to press against the outer wall of the gear. The lower slide bar 226 drives the lower positioning head 2213 to move towards the center of the round plate seat 221. The adjusting head 2214 on the lower positioning head 2213 moves from inside the lower positioning head 2213. The upper side slides outward to support the inner wall of the gear, while the support ring 2215 supports the lower end face of the gear, achieving synchronous clamping of the gear inside and outside at the grinding station; after grinding is completed, the cylinder 232 drives the cross frame 233 and the roller 236 to return to their original position, the roller 236 disengages from the extension plate 2210, one end of the tension spring 2212 is hooked on the main hanging rod 222 and the other end is hooked on the auxiliary hanging rod 2211, the tension of the tension spring 2212 causes the auxiliary hanging rod 2211 to drive the extension plate 2210 and the disc 223 to rotate in the opposite direction. The gear is reset, and the outer positioning head 229 and adjusting head 2214 retract to release the gear. Through synchronous centering and clamping, the center of the gear automatically coincides with the center of the round plate seat, which improves the positioning accuracy and clamping rigidity and effectively ensures the stability during the machining of the gear end face. At the same time, the clamping action is only performed after the workpiece moves to the machining station, so that the workpiece is in a loose state during the rotation of the turntable, which facilitates loading and unloading operations. Moreover, the clamping process and the turntable positioning do not interfere with each other, avoiding the influence of the turntable stop position error on the clamping accuracy.

[0023] Specifically, the positioning component 22 also includes a threaded rod 2216 rotatably installed inside the inner end of the lower positioning head 2213, and the lower end of the adjusting head 2214 is threadedly installed with the threaded rod 2216, and the end of the threaded rod 2216 is provided with an internal hexagonal hole.

[0024] In this embodiment, by inserting an internal hex wrench into the internal hexagonal hole at the end of the threaded rod 2216 and rotating it, the threaded rod 2216 rotates and drives the adjusting head 2214 to slide along the upper side of the inner end of the lower positioning head 2213 through the thread engagement with the lower end of the adjusting head 2214, thereby changing the length of the adjusting head 2214 extending out of the lower positioning head 2213. Since the outer positioning head 229 and the adjusting head 2214 are linked through the same set of arc grooves 224, sliders 225, slide bars 226 and other structures, the change in the initial position of the adjusting head 2214 causes the initial angle of the disk 223 to change accordingly, thereby driving the initial radial position of the outer positioning head 229 to change synchronously, thus realizing the adaptation of the same set of positioning components 22 to gears with different inner and outer diameters.

[0025] Specifically, the positioning component 22 also includes several connecting blocks 2217 fixed on the top and bottom circumference of the circular plate base 221, and the circular cover 227 is fixed on the connecting blocks 2217.

[0026] In this embodiment, the round cover 227 is fixedly installed on the top and bottom of the round plate base 221 by a number of connecting blocks 2217 arranged in a circle. The connecting blocks 2217 create a gap between the round cover 227 and the round plate base 221, providing space for the rotation of the disc 223.

[0027] Specifically, the positioning component 22 also includes several rod seats 2218 that are fixed to the bottom circumference of the circular plate base 221 and are fixed to the top of the turntable 211.

[0028] In this embodiment, the circular plate seat 221 is mounted on the turntable 211 by the rod seat 2218, so that the circular plate seat 221 and the turntable 211 maintain a fixed distance, avoiding interference between the lower positioning head 2213 and the adjusting head 2214 and the turntable 211 when they move downward; the multiple rod seats 2218 arranged in a circle make the circular plate seat 221 bear force evenly, and maintain a stable position during the intermittent rotation of the turntable 211 and the grinding process, without shaking or tilting.

[0029] Specifically, the power unit 23 is located directly behind the turntable 211. When the circular plate seat 221 rotates to the bottom of the grinder 214, the roller 236 and the extension plate 2210 cooperate to drive the disc 223 to rotate, causing the outer positioning head 229 to move inward and the adjusting head 2214 on the lower positioning head 2213 to move outward, thereby achieving synchronous clamping of the gear inside and outside.

[0030] In this embodiment, only the circular plate seat 221 in the grinding station is clamped by the roller 236, while the circular plate seats 221 in other stations are in a loose state under the action of the tension spring 2212, which is convenient for loading and unloading workpieces; in addition, the power component 23 is fixed on the stand 212 and does not rotate with the turntable 211, which is simple and reliable in structure and convenient for air circuit connection and maintenance.

[0031] Specifically, one end of the tension spring 2212 is hooked on the main hanging rod 222, and the other end is hooked on the auxiliary hanging rod 2211, and the axis of the tension spring 2212 forms an acute angle with the radial direction of the circular plate seat 221.

[0032] In this embodiment, the tension spring 2212 is arranged obliquely so that its tension direction is adapted to the movement trajectory of the auxiliary hanging rod 2211. During the rotation of the disc 223, the tension of the tension spring 2212 always generates an effective restoring torque.

[0033] Specifically, the inner wall of the outer positioning head 229 is an arc surface, and the axis of the arc surface coincides with the axis of the circular plate seat 221; the outer wall of the adjusting head 2214 is an arc surface, and the axis of the arc surface coincides with the axis of the circular plate seat 221.

[0034] In this embodiment, by setting the inner sidewall of the outer positioning head 229 and the outer sidewall of the adjusting head 2214 as arc surfaces coaxial with the circular plate seat 221, the arc surfaces fit against the inner and outer walls of the gear when clamped, automatically adjusting the gear center to a position coinciding with the axis of the circular plate seat 221, thus achieving the centering function; the contact between the arc surfaces and the inner and outer walls of the gear is a line contact or a surface contact, and the contact stress is evenly distributed, avoiding excessive local pressure that could damage the gear.

[0035] Specifically, the main component 21 also includes a three-axis module 213 mounted on the upper end of the stand 212, and a grinder 214 is installed at the execution end of the three-axis module 213.

[0036] In this embodiment, after the circular plate seat 221 drives the gear to rotate to the grinding station and completes the internal and external synchronous clamping, the three-axis module 213 drives the grinding machine 214 to move along the X-axis, Y-axis and Z-axis directions, so that the grinding head of the grinding machine 214 contacts the end face of the gear and moves according to the preset trajectory to perform grinding processing on the end face of the gear.

[0037] This invention also discloses a processing method for an automotive transmission gear forming device, comprising the following steps: S1, place the gear on the support ring 2215 at the loading and unloading station, and the turntable 211 rotates intermittently to send the gear to the grinding station; S2, after the gear is in place, the cylinder 232 drives the roller 236 to push the extension plate 2210, causing the disc 223 to rotate and drive the outer positioning head 229 to press the outer wall of the gear inward and the adjusting head 2214 to support the inner wall of the gear outward through the arc groove 224 and the slide bar 226, so as to achieve synchronous clamping inside and outside. S3, the three-axis module 213 drives the grinding machine 214 to grind the end face of the gear. After completion, the cylinder 232 is reset, the tension spring 2212 causes the disc 223 to rotate in the opposite direction, the outer positioning head 229 and the adjusting head 2214 retract to release the gear, and the turntable 211 rotates out the processed gear.

[0038] The working principle and usage process of this invention are as follows: First, the cam divider on the processing table 1 drives the turntable 211 to rotate intermittently, so that several positioning components 22 with gears to be processed pass through the grinding station located directly behind in sequence. When the positioning component 22 rotates to the grinding station, the cylinder 232 pushes the crossbeam 233 to make the balance bar 234 slide forward along the upright 212, the roller 236 moves forward to contact the extension plate 2210 and continues to push the extension plate 2210 forward, and the extension plate 2210 drives the disc 223 to rotate around the disc base 221. When the disc 223 rotates, its internal arc groove 224 drives the slider 225 to slide along the arc groove 224. The slider 225 drives the slide bar 226 to move radially along the straight groove 228 on the round cover 227. The upper slide bar 226 drives the outer positioning head 229 to move towards the center of the round plate seat 221 to press the outer wall of the gear. The lower slide bar 226 drives the lower positioning head 2213 to move towards the center of the round plate seat 221. The adjusting head 2214 on the lower positioning head 2213 slides outward from the upper side of the inner end of the lower positioning head 2213 to support the inner wall of the gear. At the same time, the support ring 2215 supports the lower end face of the gear, realizing the synchronous clamping of the gear inside and outside in the grinding station. When the circular plate seat 221 drives the gear to rotate to the grinding station and completes the internal and external synchronous clamping, the three-axis module 213 drives the grinding machine 214 to move along the X-axis, Y-axis and Z-axis directions, so that the grinding head of the grinding machine 214 contacts the end face of the gear and moves according to the preset trajectory to grind the end face of the gear. After grinding is completed, cylinder 232 drives crossbeam 233 and roller 236 to return to their original position. Roller 236 disengages from extension plate 2210. One end of tension spring 2212 is hooked on main hanging rod 222 and the other end is hooked on auxiliary hanging rod 2211. The tension of tension spring 2212 causes auxiliary hanging rod 2211 to drive extension plate 2210 and disc 223 to rotate in the opposite direction and return to their original position. Outer positioning head 229 and adjusting head 2214 retract and release gear. Only the circular plate holder 221 in the grinding station will be clamped by the roller 236, while the circular plate holder 221 in other stations will be in a loose state under the action of the tension spring 2212, which is convenient for loading and unloading workpieces.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing and forming device for automotive transmission gears, comprising a processing table (1), characterized in that: The machining table (1) is equipped with a machining mechanism (2) for gear machining. The machining mechanism (2) includes: The main component (21) includes a turntable (211) mounted on the upper end of the processing table (1) via a cam divider, and a stand (212) fixed to the rear end of the top of the processing table (1). The positioning component (22) includes several circular plate seats (221) arranged circumferentially on a turntable (211). A main hanging rod (222) is longitudinally fixed through the rear end of each circular plate seat (221). A disc (223) is rotatably mounted on both the upper and lower ends of the circular plate seat (221). Several arc-shaped grooves (224) are circumferentially arranged inside the discs (223). A slider (225) is slidably mounted inside the arc-shaped grooves (224). A slide bar (226) is rotatably mounted on the slider (225). A circular cover (227) is fixed on both the upper and lower ends of the circular plate seat (221). Several straight grooves (228) are circumferentially arranged inside the circular cover (227). The slide bar (226) is slidably installed inside the straight groove (228). The top of the upper slide bar (226) is equipped with an outer positioning head (229). An extension plate (2210) is fixed to the outer end of the disc (223). A secondary hanging rod (2211) is fixed on the extension plate (2210). A tension spring (2212) is connected to the secondary hanging rod (2211), and the other end of the tension spring (2212) is connected to the main hanging rod (222). A lower positioning head (2213) is installed at the bottom of the lower slide bar (226). An adjusting head (2214) is slidably installed on the upper side of the inner end of the lower positioning head (2213). A support ring (2215) is fixed in the middle of the inside of the round plate seat (221). The power unit (23) is mounted on the main component (21) and is used to control the extension plate (2210) to drive the disk (223) to rotate.

2. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: The power assembly (23) includes a horizontal plate (231) fixed to the rear end of the upright (212), a cylinder (232) is installed at the front end of the horizontal plate (231), a horizontal frame (233) is fixed at the output end of the cylinder (232), a balance bar (234) is fixed on both the left and right sides of the front end of the horizontal frame (233), and the balance bar (234) is slidably installed through the upright (212), a bearing seat (235) is fixed at the front end of the balance bar (234), and a roller (236) is rotatably installed inside the bearing seat (235).

3. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: The positioning component (22) also includes a threaded rod (2216) rotatably installed inside the inner end of the lower positioning head (2213), and the lower end of the adjusting head (2214) is threadedly installed with the threaded rod (2216), and the end of the threaded rod (2216) is provided with an internal hexagonal hole.

4. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: The positioning component (22) also includes a number of connecting blocks (2217) fixed on the top and bottom circumference of the circular plate base (221), and the round cover (227) is fixed on the connecting blocks (2217).

5. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: The positioning component (22) also includes a number of rod seats (2218) arranged on the bottom circumference of the circular plate base (221), and the rod seats (2218) are fixed on the top of the turntable (211).

6. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: The power assembly (23) is located directly behind the turntable (211). When the circular plate seat (221) rotates to the bottom of the grinder (214), the roller (236) and the extension plate (2210) cooperate to drive the disc (223) to rotate, causing the outer positioning head (229) to move inward and the adjusting head (2214) on the lower positioning head (2213) to move outward, thereby achieving synchronous clamping of the gear inside and outside.

7. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: One end of the tension spring (2212) is hooked on the main hanging rod (222), and the other end is hooked on the auxiliary hanging rod (2211). The axis of the tension spring (2212) forms an acute angle with the radial direction of the circular plate seat (221).

8. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: The inner wall of the outer positioning head (229) is an arc surface, and the axis of the arc surface coincides with the axis of the circular plate seat (221); the outer wall of the adjusting head (2214) is an arc surface, and the axis of the arc surface coincides with the axis of the circular plate seat (221).

9. The automotive gearbox transmission gear processing and forming device according to claim 1, characterized in that: The main component (21) also includes a three-axis module (213) mounted on the upper end of the stand (212), and a grinder (214) is installed at the execution end of the three-axis module (213).

10. A processing method for an automotive gearbox transmission gear forming device, characterized in that: The automotive gearbox transmission gear processing and forming apparatus according to any one of claims 1-9 includes the following steps: S1, place the gear on the support ring (2215) of the loading and unloading station, and the turntable (211) rotates intermittently to send the gear to the grinding station; S2, after the gear is in position, the cylinder (232) drives the roller (236) to push the extension plate (2210), causing the disc (223) to rotate and drive the outer positioning head (229) to press the outer wall of the gear inward and the adjusting head (2214) to support the inner wall of the gear outward through the arc groove (224) and the slide bar (226), so as to achieve synchronous clamping inside and outside; S3, the three-axis module (213) drives the grinder (214) to grind the end face of the gear. After completion, the cylinder (232) resets, the tension spring (2212) causes the disc (223) to rotate in the opposite direction, the outer positioning head (229) and the adjusting head (2214) retract to release the gear, and the turntable (211) rotates out the processed gear.

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