Gear cutting forming device

Abstract

The application relates to the technical field of gear machining, and discloses a gear cutting forming device for machining gears, which comprises a workbench, a gear shaping cutter, a rotating table rotatably installed on the workbench, a sliding seat, a rotating rod, a supporting block and a locking piece. The sliding seat is arranged at intervals along the circumference of the rotating table and slides along the radial direction of the rotating table. The rotating table is provided with a sliding groove for the sliding seat. The rotating rod is rotatably installed on the sliding seat and is used for contacting the outer peripheral side wall of the gear or the inner hole wall of the gear. The supporting block is fixedly installed on the rotating rod and is used for contacting the lower end surface of the gear. The locking piece is installed on the sliding seat and is used for fixing the rotating rod. The fixing assembly is installed on the rotating table and is used for fixing a plurality of the sliding seats, so that the rotating rods of all the sliding seats are attached to the outer peripheral side wall or the inner hole wall of the same gear. The application can shorten the fixture replacement time and calibration trouble.

Description

Technical Field

[0001] This application relates to the technical field of gear processing, and in particular to a gear cutting and forming apparatus. Background Technology

[0002] In the gear cutting and forming process, a gear shaper can be used for processing. When the gear shaper processes internal and external gears, the main motion is the high-speed reciprocating motion of the gear shaper cutter along the axial direction. The processing of the gear shaper relies on the "synchronous generating motion of the tool and the workpiece". Therefore, there are two independent spindles that need to be strictly matched, including the tool spindle and the workpiece spindle. The tool spindle is located in the tool holder area at the top of the equipment and is used to install the gear shaper cutter shank. The workpiece spindle is located in the worktable area at the bottom of the equipment and is fixedly connected to the rotary table on the worktable. The workpiece spindle is the core carrier for the rotary table to realize the "rotation function". Fixtures are installed on the rotary table.

[0003] Switching between machining internal and external gears on the same gear shaper requires parameter adjustments, fixture changes, tool adaptation, and trial cuts for verification. A three-jaw chuck is the most commonly used fixture for external gears; its core function is radial clamping from the outside of the workpiece, centering it with the workpiece's inner hole or outer diameter as a reference, ensuring coaxiality between the workpiece and the spindle. A tension sleeve is the core fixture for internal gear machining; its core function is radial support from the inside of the workpiece, centering it with the workpiece's inner hole as a reference, avoiding obstruction of the inner machining area while ensuring coaxiality.

[0004] After changing the fixture (such as from a three-jaw chuck to an expansion sleeve), it is necessary to ensure that the center axis of the fixture is completely aligned with the center axis of the workpiece spindle. After installation, measurement and calibration are also required, which is quite troublesome. Summary of the Invention

[0005] To improve the above situation, this application provides a gear cutting and forming apparatus.

[0006] This application provides a gear cutting and forming apparatus, which adopts the following technical solution:

[0007] A gear cutting and forming apparatus for processing gears includes a worktable, a gear shaper, and a rotary table rotatably mounted on the worktable, and further includes:

[0008] The slide blocks are spaced apart circumferentially along the rotary table and slide along the radial direction of the rotary table. The rotary table has grooves for the slide blocks to slide in.

[0009] A rotating rod is rotatably mounted on the slide block, and the rotating rod is used to contact the outer peripheral wall of the gear or the inner wall of the gear hole.

[0010] The support block is fixedly installed on the rotating rod and is used to contact the lower end face of the gear;

[0011] A locking element, installed on the slide block, is used to fix the rotating rod;

[0012] A fixing component, installed on the rotating platform, is used to fix multiple slides so that the rotating rods of all slides are in contact with the outer peripheral wall or inner hole wall of the same gear.

[0013] By adopting the above technical solution, during processing, the positions of the slide and rotating rod are adjusted according to the gear type (internal or external gear). The locking component locks the rotating rod, making it contact the gear hole wall. The support block contacts the gear end face, forming multiple positioning contacts. The fixing component fixes the slide, ensuring that multiple rotating rods are evenly attached to the gear hole wall, thus fixing the gear on the rotary table. This ensures that the gear and the rotary table are coaxial. The rotary table drives the gear to rotate, and the gear shaper cuts the gear, completing the generating motion. This allows the same device to be used for processing both internal and external gears without changing the fixture, reducing fixture change time and calibration trouble, and improving processing efficiency and versatility.

[0014] Optionally, a clearance groove is provided in the middle of the rotary table, and the clearance groove is connected to the sliding groove;

[0015] The positioning column is inserted into the relief groove and is coaxial with the rotation center line of the rotary table;

[0016] A positioning rod is detachably connected to the rotating rod and the positioning post;

[0017] The first through rod passes through the gear and is detachably connected to the positioning post;

[0018] The first pressure block is detachably connected to the first through rod during the machining of the external gear and abuts against the end face of the external gear.

[0019] The second through rod is detachably connected to the slide block;

[0020] The second pressure block is machined to form an internal gear and is detachably connected to the second through rod, abutting against the end face of the internal gear.

[0021] By adopting the above technical solution, the positioning column ensures that the central axis of the rotary table is aligned with the center of the gear, the positioning rod connects the rotating rod and the positioning column to enhance the rigidity of the system, the first through rod and the first pressure block are used for axial clamping of the external gear, and the second through rod and the second pressure block are used for axial clamping of the internal gear, providing a clamping mechanism, and achieving quick adaptation through detachable connection.

[0022] Optionally, the fixing component includes:

[0023] The clamping plate has an arc-shaped structure. Rotary grooves are formed on the two opposite side walls of the slide groove. The clamping plate passes through the rotary grooves and is rotatably installed within the rotary grooves about the rotation center line of the rotary table. A guide groove is formed in the solid portion between two adjacent slide grooves of the rotary table. The guide groove extends radially along the rotary table. One end of the clamping plate extends into the guide groove, and the other end of the clamping plate is connected to the slide block. A slide block is simultaneously clamped by two clamping plates. Multiple clamping plates are spaced apart along the length of the slide groove. The arc-shaped length of the multiple clamping plates gradually increases in the direction away from the center of the rotary table. The arc curvature of the clamping plates adjacent to two slide grooves is the same, and the radial distance is consistent.

[0024] A fixing rod is installed in the guide groove and simultaneously fixes the two clamping plates.

[0025] By adopting the above technical solution, the driving clamp can rotate and contact or move away from the slide. The clamp in the same slide groove adapts to the slide at different positions in the slide groove, thereby adapting to gears of different sizes. The clamps close to each other between multiple slide grooves fix different slides, but the slides are fixed to the same gear. The clamp also plays a positioning role. The customized arrangement can adapt to the gear size that is often processed. The slide can slide to the corresponding clamp according to the gear size, and then the clamp is fixed by the fixing rod, so that the slide is clamped and fixed by the clamp.

[0026] Optionally, the fixing assembly further includes a fixing block, the fixing rod passes through the fixing block and is threadedly connected to the rotary table, and the opposite sides of the fixing block are respectively inserted into the clamping plate to abut against it.

[0027] By adopting the above technical solution, tightening the fixing rod causes the fixing block to press against the clamping plate, thereby locking the position of the clamping plate and driving the clamping plate to hold the fixed slide.

[0028] Optionally, the slide block is provided with a plurality of first slots in the circumferential direction. The first slots are in pairs, and the clamps distributed along the length of the slide groove are respectively inserted into different groups of first slots.

[0029] By adopting the above technical solution, the position of the slide is changed according to the gear diameter, an appropriate first slot group is selected and connected to the clamping plate by plugging, and then the clamping plate is fixed so that the radial and axial positions of the slide are fixed.

[0030] Optionally, one end of the clamping plate located within the slide groove is connected to an abutment plate, and the slide block has a second slot for inserting the abutment plate.

[0031] By adopting the above technical solution, relative movement between the clamping plate and the slide is prevented, thereby improving force transmission efficiency and clamping accuracy.

[0032] Optionally, the slide block is threaded with a bolt, which presses against the abutment plate.

[0033] By adopting the above technical solution, after adjusting the position of the slide block, tighten the bolts so that the ends of the bolts press against the abutment plate.

[0034] Optionally, the rotary table has a material collection trough located between the two sliding grooves, the guide groove is located inside the material collection trough, the clamping plate is exposed through the material collection trough, and the fixing assembly also includes an intercepting plate. When two adjacent clamping plates abut against each other at one end in the sliding groove, the intercepting plate and the two clamping plates contact each other at one end in the material collection trough. The fixing rod passes through the intercepting plate and is connected to the rotary table.

[0035] By adopting the above technical solution, the debris falls into the collection trough, the interceptor plate prevents the debris from spreading, effectively collects and manages the processing debris, so that the debris is collected and the coolant flows to the recycling place. When a gear is finished, the debris can also be collected and processed.

[0036] Optionally, a gap is left between the clamping plate and the bottom of the slide groove, allowing coolant to overflow through the gap between the clamping plate and the slide groove or from above the clamping plate.

[0037] By adopting the above technical solution, the gap allows coolant to flow, while the clamp itself acts as an interceptor, preventing a large amount of debris from flowing with the coolant and thus playing a preliminary role in filtering debris, thereby improving the debris filtration effect during coolant recovery.

[0038] Optionally, the locking element is a locking rod, which includes a threaded portion and a pressing portion. The locking rod passes through the rotating rod, and the threaded portion is threadedly connected to the slide block. The rotating rod has a stepped surface for the pressing portion to contact.

[0039] By adopting the above technical solution, the threaded part of the locking rod allows for fine adjustment of the clamping force, and the pressing part contacts the stepped surface to form a friction lock, preventing the rotating rod from loosening during processing.

[0040] In summary, this application includes at least one of the following beneficial effects:

[0041] 1. When switching gear types, there is no need to disassemble and replace the entire fixture. Only the position of the slide and the angle and position of the rotating rod need to be adjusted. The fixing component can drive all slides to be fixed on the same circumference, so that multiple rotating rods are evenly attached to the gear hole wall, ensuring the coaxiality of the gear and the rotary table (i.e., the workpiece spindle), eliminating the need for repeated calibration steps.

[0042] 2. Implement debris interception and unified collection functions. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0044] Figure 2 This is a schematic diagram of the overall structure of the rotary table as shown in Embodiment 1 of this application;

[0045] Figure 3 This is a schematic diagram illustrating the overall structure of the slide block in Embodiment 1 of this application;

[0046] Figure 4 This is a cross-sectional schematic diagram illustrating the slide in Embodiment 1 of this application;

[0047] Figure 5 This is a schematic diagram illustrating the installation of the positioning column on the rotary table in Embodiment 1 of this application;

[0048] Figure 6 This is a cross-sectional view of the fixed external gear in Embodiment 1 of this application;

[0049] Figure 7 This is a schematic diagram of the fixed internal gear in Embodiment 1 of this application;

[0050] Figure 8 This is a cross-sectional view of the fixed internal gear in Embodiment 1 of this application;

[0051] Figure 9 yes Figure 8 Sectional view at point AA;

[0052] Figure 10 This is a schematic diagram illustrating the cooperation between the fixing rod and the fixing block in Embodiment 1 of this application;

[0053] Figure 11 This is a schematic diagram of the rotary table structure of Embodiment 2 of this application;

[0054] Figure 12 yes Figure 11 Enlarged diagram of point A.

[0055] Explanation of reference numerals in the attached drawings: 10. Workbench; 11. Gear cutter; 20. Rotary table; 21. Slide groove; 22. Guide groove; 23. Relief groove; 24. Guide groove; 25. Rotary groove; 26. Collection trough; 30. Slide seat; 31. Guide rod; 32. First slot; 33. Second slot; 40. Rotating rod; 41. Support block; 42. Positioning rod; 43. Second through rod; 44. Second pressure block; 50. Locking rod; 60. Positioning post; 61. First through rod; 62. First pressure block; 70. Fixing assembly; 71. Clamping plate; 72. Fixing rod; 73. Fixing block; 74. Abutment plate; 80. Interceptor plate. Detailed Implementation

[0056] The following is in conjunction with the appendix Figures 1-12 This application will be described in further detail.

[0057] This application discloses a gear cutting and forming apparatus.

[0058] Example 1: Refer to Figure 1 A gear cutting and forming device is mainly used on a gear shaper for processing internal or external gears. It includes a worktable 10, a gear shaper cutter 11, and a rotary table 20. The worktable 10 serves as the basic load-bearing component, and the rotary table 20 is mounted on the worktable 10 via the workpiece spindle. The rotary table 20 is a key component for placing and rotating gears during gear processing.

[0059] Reference Figure 2 The rotary table 20 has a cylindrical structure, and a sliding groove 21 is opened along the circumference of the rotary table 20. The sliding groove 21 is distributed radially along the rotary table 20. Four slide blocks 30 are arranged at intervals along the circumference of the rotary table 20. These slide blocks 30 are respectively installed in the sliding groove 21 and slide along the length of the sliding groove 21 opened by the rotary table 20, so as to meet the processing requirements of gears of different sizes.

[0060] Reference Figure 2 and Figure 3 The bottom of the slide block 30 is fixedly connected to a guide rod 31. The slide block 30 and the side wall of the slide groove 21 are left with a preset distance. The bottom of the slide groove 21 is provided with a guide groove 22, which extends along the length of the slide groove 21, so that the slide block 30 can move accurately along the slide groove 21.

[0061] Reference Figure 3 A rotating rod 40 is rotatably mounted on the slide 30 via bearings. The function of the rotating rod 40 is to contact the outer peripheral wall or the inner wall of the gear to achieve radial positioning of the gear. A support block 41 is fixedly mounted on the rod wall of the rotating rod 40. The support block 41 is used to contact the lower end face of the gear to support and position the gear in the axial direction. The support block 41 and the upper surface of the rotary table 20 are spaced apart to accommodate the movement stroke of the gear shaper 11, allowing the gear shaper 11 to move smoothly up and down without contacting the rotary table 20. The rod wall of the rotating rod 40 where the support block 41 is mounted has an arc-shaped contact surface. When machining the internal gear, the arc-shaped contact surface contacts the outer peripheral wall of the internal gear, increasing the friction with the internal gear. When the rotating rod 40 contacts the inner wall of the external gear, a line contact is formed. The cross-section of the rotating rod 40 is not limited to a specific shape and can be customized according to the gear size to better fit the inner wall or outer circumference of the gear. Rubber pads can also be attached to increase the fitting and clamping effect.

[0062] Reference Figure 4To fix the position of the rotating rod 40, a locking element is installed on the slide 30. Here, the locking element is a locking rod 50, which includes a threaded part and a pressing part. The locking rod 50 passes through the rotating rod 40, and the threaded part is threadedly connected to the slide 30. The stepped surface opened in the rotating rod 40 allows the pressing part to contact. By rotating the locking rod 50, the fine-tuning clamping force of the threaded part is used to make the pressing part and the stepped surface form a friction lock, preventing the rotating rod 40 from loosening during processing.

[0063] Reference Figure 2 The rotary table 20 has a relief groove 23 in the center, and the relief groove 23 is connected to all the sliding grooves 21.

[0064] Reference Figure 5 A positioning pin 60 is inserted into the clearance groove 23 of the rotary table 20. The positioning pin 60 is coaxial with the rotation center line of the rotary table 20, and its function is to ensure that the central axis of the rotary table 20 is aligned with the center of the gear. When machining the external gear, the positioning pin 60 is inserted into the clearance groove 23; otherwise, the positioning pin 60 is removed. A positioning rod 42 passes through the slide 30. The positioning rod 42 and the locking rod 50 do not interfere with each other. The positioning rod 42 and the positioning pin 60 are threadedly connected, so that the positioning pin 60 is fixed on the rotary table 20.

[0065] Reference Figure 5 and Figure 6 When machining the external gear, the rotating rod 40 contacts the inner wall of the external gear, and the support block 41 contacts the lower end face of the external gear. After the rotating rod 40, the support block 41, and the external gear form a mutually pressing relationship, the slide block 30 is then fixed. The positioning pin 60 is threadedly connected to the first through rod 61, and the first through rod 61 passes through the first pressure block 62. After the first through rod 61 passes through the first pressure block 62 and the inner hole of the gear, it is threadedly connected to the positioning pin 60. The first pressure block 62 is pressed by the protrusion on the end face of the first through rod 61, so that the first pressure block 62 presses down on the end face of the external gear, thereby achieving axial clamping of the external gear.

[0066] Reference Figure 7 and Figure 8 When machining the internal gear, the rotating rod 40 fits against the outer peripheral wall of the internal gear. After the rotating rod 40 and the internal gear generate significant compressive and frictional forces, the slide block 30 is fixed in place. The slide block 30 is threadedly connected to a second through rod 43, through which a second pressure block 44 passes. After passing through the second pressure block 44, the second through rod 43 is threadedly connected to the slide block 30. The second pressure block 44 is pressed down by the protrusion on the end face of the second through rod 43, causing the second pressure block 44 to press down on the upper end face of the internal gear, thus achieving axial clamping of the internal gear. This detachable connection method allows for rapid adaptation to the machining needs of different types of gears.

[0067] A fixing component 70 is installed on the rotary table 20. Its main function is to fix multiple slides 30 on the rotary table 20 and make the rotating rods 40 of multiple slides 30 fit against the outer peripheral wall or inner hole wall of the same gear.

[0068] Reference Figure 9 and Figure 10 The fixing assembly 70 includes a clamping plate 71 with an arc-shaped structure. Rotating grooves 25 are formed on the two opposite vertical sidewalls of the slide groove 21. The clamping plate 71 passes through the rotating grooves 25 and is rotatably mounted within the rotating grooves 25 about the rotation centerline of the rotary table 20. A radially extending guide groove 24 with a stepped surface is formed in the solid portion between two adjacent slide grooves 21 of the rotary table 20. One end of the clamping plate 71 extends into the guide groove 24, and the other end is connected to the slide block 30, allowing one slide block 30 to be clamped by both clamping plates 71 simultaneously.

[0069] Reference Figure 9 Multiple clamping plates 71 are spaced apart along the length of the slide groove 21, and the length of the arc direction of the multiple clamping plates 71 gradually increases towards the center away from the rotary table 20. The arc curvature of adjacent clamping plates 71 in two slide grooves 21 is the same, and the radial distance is consistent. According to the gear size, the clamping plates 71 are manually driven to rotate, so that the clamping plates 71 clamp or move away from the slide block 30. The clamping plates 71 in the same slide groove 21 can adapt to slide blocks 30 in different positions in the slide groove 21, thereby accommodating gears of different sizes. The fixing rod 72 is installed in the guide groove 24 and is used to fix two clamping plates 71 at the same time.

[0070] Reference Figure 9 and Figure 10 The fixing assembly 70 also includes a fixing rod 72 and a fixing block 73. The fixing rod 72 passes through the fixing block 73 and is threadedly connected to the rotary table 20. A nut is fixedly installed at the bottom of the guide groove 24 on the rotary table 20 for threaded connection of the fixing rod 72. The fixing block 73 slides down between the two clamping plates 71. The opposite sides of the fixing block 73 are respectively inserted into the two clamping plates 71. Tightening the fixing rod 72 can keep the clamping plates 71 in a fixed state to clamp the slide 30. Rubber pads can be provided at the ends of the fixing block 73 or the clamping plates 71 to increase the tightness of the connection between the fixing block 73 and the clamping plates 71, and also to drive the tightness between the clamping plates 71 and the slide 30, so that the rotating rod 40 is tightly attached to the gear.

[0071] Reference Figure 9 The slide block 30 has multiple first slots 32 circumferentially. The first slots 32 are symmetrically arranged in pairs. The clamping plates 71 distributed along the length of the slide groove 21 are respectively inserted into different groups of first slots 32. According to the gear diameter, the position of the slide block 30 is changed, and the appropriate group of first slots 32 is selected to be connected to the clamping plates 71 by insertion. Then the clamping plates 71 are fixed so that the radial and axial positions of the slide block 30 are fixed.

[0072] This application mainly focuses on the design of the rotary table 20 and the fixture. The positions of the workpiece spindle and the tool spindle remain unchanged. Parameter adjustments and tool setting are still achieved using existing technologies.

[0073] The implementation principle of the gear cutting and forming device in Embodiment 1 of this application is as follows:

[0074] In actual machining, depending on the type of gear to be machined (internal or external gear), first adjust the radial position of the slide 30 on the rotary table 20 so that the rotating rod 40 can contact the gear hole wall, while the support block 41 contacts the lower end face of the gear, forming multiple positioning contacts and fitting tightly. Then, lock the rotating rod 40 using locking components; next, drive the clamping plate 71 to rotate through the fixing assembly 70, so that the clamping plate 71 and the slide 30 form a suitable connection relationship, and fix the clamping plate 71 through the fixing rod 72, fixing block 73 and other components to ensure that multiple rotating rods 40 are evenly fitted against the gear hole wall, so that the gear is stably fixed on the rotary table 20, thereby ensuring that the gear and the rotary table 20 are coaxial; the rotary table 20 drives the gear to rotate, and cooperates with the gear shaper 11 to complete the generating motion, realizing the machining of internal and external gears with the same device without changing the fixture, reducing fixture change time and calibration trouble, and improving machining efficiency and versatility.

[0075] Example 2: Refer to Figure 11 The difference between Embodiment 2 and Embodiment 1 is that the connection method of the clamping plate 71 and the slide 30 is different, and the rotating table 20 is provided with a material collection groove 26, and some of the fixing rods 72 are provided with intercepting plates 80. The rest of the structure and principle are the same.

[0076] Reference Figure 12 One end of the clamping plate 71 located within the slide groove 21 is connected to an abutment plate 74. A second slot 33 is provided on the outer periphery of the slide block 30 for the abutment plate 74 to be inserted into, preventing relative movement between the clamping plate 71 and the slide block 30. The fit between the abutment plate 74 and the second slot 33 accommodates tolerances present in the inner wall or outer periphery of the gear. The slide block 30 can move slightly radially, improving force transmission efficiency and clamping accuracy. The slide block 30 is threaded with a bolt, one end of which extends into the second slot 33 and presses against the abutment plate 74. After adjusting the position of the slide block 30, the bolt is tightened to press the bolt end against the abutment plate 74.

[0077] Reference Figure 11The collection trough 26 is located between the two chutes 21, and the guide trough 24 is located inside the collection trough 26, with the clamping plate 71 exposed in greater extent through the collection trough 26. When the ends of two adjacent clamping plates 71 in the chutes 21 abut against each other through the abutting plate 74, the intercepting plate 80 and the ends of the two clamping plates 71 in the collection trough 26 come into contact. The fixing rod 72 passes through the intercepting plate 80 and connects to the rotating table 20, so that the clamping plates 71 and the intercepting plate 80 form a closed ring, which can effectively prevent debris from leaving the rotating table 20 and achieve a preliminary collection effect on the debris. The two abutting intercepting plates 80 form a V-shaped structure, providing space for force application, which facilitates subsequent manual pushing of the two clamping plates 71 away from each other.

[0078] During processing, debris falls into the collection trough 26, and the interceptor plate 80 prevents the debris from spreading, effectively collecting and managing the processing debris. The debris is collected, and the coolant flows to the recycling point. After a gear is processed, the debris can also be collected in the relief trough 23. Once the position of the slide 30 is determined, generally only the outermost clamping plate 71 needs to be fixed by the interceptor plate 80 to form a retaining ring. The other unused clamping plates 71 are kept apart in the collection trough 26, allowing the debris to move towards the outermost clamping plate 71 along with the flow of coolant and the rotation of the rotary table 20, reducing the concentration of debris near the relief trough 23.

[0079] A gap can be left between the clamping plate 71 and the bottom of the slide 21, allowing coolant to flow. A large amount of coolant overflows from the rotating table 20 through the gap between the clamping plate 71 and the slide 21 and above the clamping plate 71. The clamping plate 71 itself also acts as an interceptor, preventing a large amount of debris from flowing with the coolant, thus playing a preliminary role in filtering debris and improving the debris filtration effect during coolant recovery.

[0080] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gear cutting forming apparatus for machining a gear, comprising a table (10), a gear shaping cutter (11) and a rotary table (20) rotatably mounted to the table (10), characterized in that, Further comprising: sliding seats (30) are arranged along the circumferential direction of the rotating table (20) and slide along the radial direction of the rotating table (20), the rotating table (20) is provided with sliding grooves (21) for the sliding of the sliding seats (30); rotating rods (40) are rotatably installed on the sliding seats (30), the rotating rods (40) are used to contact the outer circumferential side wall or the inner hole wall of the gear; clamping blocks (41) are fixedly installed on the rotating rods (40) and used to contact the lower end surface of the gear; locking members are installed on the sliding seats (30) and used to fix the rotating rods (40); fixing assemblies (70) are installed on the rotating table (20) and used to fix a plurality of the sliding seats (30) so that the rotating rods (40) of all the sliding seats (30) are attached to the outer circumferential side wall or the inner hole wall of the same gear; The fixing assembly (70) comprises: arc-shaped clamping plates (71), the opposite side walls of one sliding groove (21) are provided with rotating grooves (25), the clamping plates (71) pass through the rotating grooves (25) and are rotatably installed in the rotating grooves (25) with the rotating center line of the rotating table (20) as the center, the solid part between the adjacent two sliding grooves (21) of the rotating table (20) is provided with a guide groove (24), the guide groove (24) extends along the radial direction of the rotating table (20), one end of the clamping plate (71) extends into the guide groove (24), the other end of the clamping plate (71) is in connection with the sliding seat (30), one sliding seat (30) is clamped by two clamping plates (71), a plurality of the clamping plates (71) are arranged along the length direction of the sliding groove (21), the length of the arc-shaped direction of the plurality of clamping plates (71) gradually increases along the direction away from the center of the rotating table (20), the arc curvatures of the clamping plates (71) adjacent to the two sliding grooves (21) are the same and the radial distances are consistent; fixing rods (72) are installed in the guide grooves (24) and fix the two clamping plates (71) at the same time.

2. A gear cutting forming apparatus as claimed in claim 1, wherein The rotating table (20) is provided with a giving-up groove (23) in the middle part, the giving-up groove (23) is communicated with the sliding groove (21); a positioning column (60) is inserted into the giving-up groove (23) and coaxial with the rotating center line of the rotating table (20); a positioning rod (42) is detachably connected through the rotating rod (40) and the positioning column (60); a first penetrating rod (61) is detachably connected through the gear and the positioning column (60); a first pressing block (62) is detachably connected with the first penetrating rod (61) and abuts against the end surface of the external gear when the external gear is machined; a second penetrating rod (43) is detachably connected with the sliding seat (30); a second pressing block (44) is detachably connected with the second penetrating rod (43) and abuts against the end surface of the internal gear when the internal gear is machined.

3. A gear cutting forming apparatus according to claim 1 wherein, The fixing assembly (70) further comprises a fixing block (73), the fixing rod (72) is threadedly connected through the fixing block (73) and the rotating table (20), and opposite sides of the fixing block (73) are respectively inserted into the clamping plates (71) in abutment.

4. A gear cutting forming apparatus as claimed in claim 1, wherein, The sliding seat (30) is peripherally provided with a plurality of first insertion grooves (32), the first insertion grooves (32) are in groups of two, and the clamping plates (71) distributed along the length direction of the sliding grooves (21) are respectively inserted into different groups of the first insertion grooves (32).

5. The gear cutting forming apparatus of claim 1 wherein, One end of the clamping plate (71) located in the sliding groove (21) is connected with an abutment plate (74), and the sliding seat (30) is provided with a second insertion groove (33) for inserting the abutment plate (74).

6. A gear cutting forming apparatus according to claim 5, wherein, The sliding seat (30) is threadedly connected with a bolt, and the bolt is abutted on the abutment plate (74).

7. A gear cutting forming apparatus according to claim 3 wherein, The rotating table (20) is provided with a material collecting groove (26), the material collecting groove (26) is located between the two sliding grooves (21), the guide groove (24) is located in the material collecting groove (26), the clamping plate (71) is exposed through the material collecting groove (26), and the fixing assembly (70) further comprises an intercepting plate (80), when two adjacent clamping plates (71) abut against each other at one end in the sliding groove (21), the intercepting plate (80) is in contact with two clamping plates (71) at one end in the material collecting groove (26), and the fixing rod (72) is connected through the intercepting plate (80) and the rotating table (20).

8. A gear cutting forming apparatus according to claim 7, wherein, The clamping plate (71) and the bottom of the sliding groove (21) are provided with gaps, and the cooling liquid flows through the gaps between the clamping plate (71) and the sliding groove (21) or overflows above the clamping plate (71).

9. The gear cutting forming apparatus of claim 1 wherein, The locking member is a locking rod (50), the locking rod (50) comprises a threaded portion and an abutting portion, the locking rod (50) passes through the rotating rod (40), the threaded portion is threadedly connected with the sliding seat (30), and the rotating rod (40) is provided with a stepped surface for contacting the abutting portion.

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