A tooth-grooving fixture for forming the tooth groove of a serpentine spring coupling and its clamping method.

Abstract

The application relates to the technical field of gear shaping jigs, in particular to a semi-coupling gear slot forming gear shaping jig for a snake spring coupling and a clamping method thereof, which comprises a supporting disc, a clamping disc arranged on the supporting disc, and a fixing plate arranged in the supporting disc; a clamping mechanism arranged on the clamping disc and comprising a plurality of clamping blocks which are distributed at equal intervals in a circle, the clamping mechanism being capable of adjusting the interval between the clamping blocks; and a pressure boosting pushing mechanism arranged in the supporting disc and connected with the clamping mechanism, the pressure boosting pushing mechanism comprising a push rod in abutting contact with the clamping blocks, and the fixing plate is provided with an adjusting mechanism connected with the pressure boosting pushing mechanism; when the clamping blocks clamp the gear shaping jig laterally and perform a gear shaping action, the push rod provides a pushing force to the clamping blocks through cooperation of the pressure boosting pushing mechanism and the adjusting mechanism, so that the large stress generated during the gear shaping action is dispersed.

Description

Technical Field

[0001] This invention relates to the field of gear shaping fixtures, specifically a gear shaping fixture for forming the tooth groove of a half-coupling of a serpentine spring coupling and its clamping method. Background Technology

[0002] A serpentine spring coupling (also known as a serpentine spring coupling or leaf spring coupling) is a flexible coupling that compensates for relative displacement between two shafts through the elastic deformation of a serpentine spring leaf, while simultaneously transmitting torque and buffering vibration. A serpentine spring coupling consists of two half-couplings combined together, with the serpentine spring leaf engaging the toothed grooves of the half-couplings to achieve high-precision transmission. Therefore, during the production of the half-couplings, the toothed grooves need to be machined using a gear shaper. The gear shaper controls the reciprocating movement of the gears, continuously shaping the circumferential sidewalls of the half-couplings under cutting force until the toothed grooves are formed. It is crucial to ensure the stability of the gear shaper during its operation.

[0003] Existing gear shaping machines typically use a three-jaw chuck to clamp and fix the protruding shaft of the gear. This three-point clamping ensures the stability of the gear. However, during the gear shaping process, the gear will be subjected to cutting reaction force, which is transmitted to the protruding shaft. The root of the protruding shaft and the end that abuts against the three-jaw chuck will experience stress concentration and remain in a high stress state. During continuous gear shaping, the axial impact load is very high, which can easily lead to fatigue cracks. Summary of the Invention

[0004] The purpose of this invention is to provide a tooth-grooving fixture for forming the tooth groove of a half-coupling of a serpentine spring coupling and its clamping method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A tooth-grooving fixture for forming the tooth groove of a half-coupling of a serpentine spring coupling includes:

[0007] A support plate and a clamping plate disposed on the support plate, wherein a fixing plate is disposed inside the support plate;

[0008] Also includes:

[0009] A clamping mechanism is provided on the clamping disk and includes a plurality of clamping blocks distributed equidistantly in a circle. The clamping mechanism is capable of adjusting the spacing between the clamping blocks.

[0010] A boosting and pushing mechanism is disposed within the support plate and connected to the clamping mechanism. It includes a push rod that abuts against the clamping block. An adjustment mechanism connected to the boosting and pushing mechanism is provided on the fixed plate. The adjustment mechanism can adjust the thrust provided by the boosting and pushing mechanism to the clamping block through the push rod when the clamping mechanism moves.

[0011] As a further embodiment of the present invention: the clamping mechanism includes a rotating sleeve rotatably installed in the clamping disk, a worm gear is provided on the rotating sleeve, and a worm gear meshing with the worm gear is rotatably installed in the clamping disk;

[0012] It also includes a driven component and an elastic guide component disposed on the clamping plate and connected to the rotating sleeve for adjusting the spacing between the clamping blocks.

[0013] As a further embodiment of the present invention: the driven component includes a first vortex disk disposed at the end of the rotating sleeve, and the clamping disk is provided with a plurality of first sliding grooves and through grooves that are mutually connected and equidistantly distributed in a circle. A first sliding block is slidably installed in the first sliding groove, and a first limiting post is provided on the side wall of the first sliding block that penetrates the through groove and is slidably engaged with the first vortex disk.

[0014] As a further embodiment of the present invention: the elastic guide component includes a slot formed on the first sliding block, a guide post is provided in the slot, the clamping block slides along the axial direction of the guide post and is slidably connected to the slot, a first spring is sleeved on the guide post, and the two ends of the first spring abut against the clamping block and the inner wall of the slot, respectively.

[0015] As a further embodiment of the present invention: the pressurizing and pushing mechanism includes a plurality of pump cylinders disposed in the support plate and distributed equidistantly in a circular pattern, a limit ring is provided in the pump cylinder, and a first sealing plate that abuts against the limit ring is slidably and sealingly connected in the pump cylinder;

[0016] It also includes a pumping assembly and an air delivery assembly disposed inside the pump cylinder and connected to the first sliding block, for applying the push rod force.

[0017] As a further embodiment of the present invention: the air pumping assembly includes a cylinder disposed on the side wall of the support plate and passing through the air pumping cylinder, and a piston plate that is slidably connected to the cylinder extension end is fixedly connected to the cylinder extension end.

[0018] As a further embodiment of the present invention: the air delivery assembly includes a booster cylinder disposed at the end of the first sliding block, a second sealing disc is slidably and sealingly connected inside the booster cylinder, the second sealing disc is fixedly connected to the push rod, and a conduit connected to the pump cylinder is connected to the booster cylinder.

[0019] As a further embodiment of the present invention: the adjustment mechanism includes a second vortex disk disposed at the end of the rotating sleeve opposite to the first vortex disk, and a plurality of second sliding grooves are formed on the fixed plate in a circumferentially equidistant manner. A second sliding block is slidably installed in the second sliding groove, and a second limiting post is provided on the side wall of the second sliding block to slide and engage with the second vortex disk.

[0020] As a further embodiment of the present invention: the adjustment mechanism further includes a movable plate disposed on the second sliding block, and a movable rod passing through the movable plate is disposed on the side end of the first sealing disc, and a second spring is sleeved on the movable rod, with the two ends of the second spring abutting against the movable plate and the first sealing disc respectively.

[0021] A clamping method for a toothed gear shaping fixture for a half-coupling of a serpentine spring coupling includes the following steps:

[0022] Step 1: Insert the teeth to be clamped into the center hole of the clamping disc;

[0023] Step 2: Under the action of the clamping mechanism, control the clamping blocks to move in a direction that brings them closer together until the clamping blocks abut against the teeth;

[0024] Step 3: The clamping mechanism controls the movement of the adjusting mechanism to adjust the force of the push rod according to the size of the teeth;

[0025] Step 4: Under the action of the pressurization and pushing mechanism, a certain pushing force is provided to the clamping block through the push rod to adjust the clamping force of the clamping block.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This application can disperse the stress generated by cutting by increasing the lateral clamping force of the protruding shaft of the gear shaping half coupling when the gear shaping half coupling performs the gear shaping action, so as to ensure that the protruding shaft will not break due to stress concentration. Specifically, under the action of the clamping mechanism, the clamping blocks are controlled to move in a direction closer to each other until the clamping blocks abut against the outer wall of the protruding shaft. This ensures that the gear shaping does not wobble when performing the gear shaping action. When the clamping mechanism fixes the protruding shaft, it can also drive the adjustment mechanism to move. At the same time, the pressure boosting mechanism cooperates with the adjustment mechanism to adjust the push rod's pushing force on the clamping block according to the size of the protruding shaft. This allows the clamping block to increase the clamping force on the protruding shaft when the gear shaping moves, thereby dispersing the stress generated by the gear shaping and ensuring that there are no minor dimensional deviations during gear shaping.

[0028] When the tooth groove opening size changes, the required tooth size is different. Therefore, when the tooth size changes, the corresponding protruding shaft size also changes. Through the first vortex disk, the distance between the clamping blocks can be freely adjusted, thereby enabling clamping actions to be performed on protruding shafts of different sizes, thus increasing the applicability of this application.

[0029] By cooperating with the first and second volute disks, the corresponding clamping force can be provided according to the circumference radius of the extension shaft, and the compression of the second spring before the cylinder works can be adjusted. In this way, it can ensure that effective clamping can still be provided when the size of the extension shaft changes, and the push rod can adaptively adjust the thrust provided to the clamping block according to the change in the size of the extension shaft, so as to ensure that the stress generated during the cutting of the gear is effectively dispersed during the gear hobbing process. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of one embodiment of a tooth-grooving fixture for forming the tooth groove of a half-coupling of a serpentine spring coupling.

[0031] Figure 2 This is a schematic diagram of the structure of a toothed clamp for forming the tooth groove of a half-coupling of a serpentine spring coupling at another angle in one embodiment.

[0032] Figure 3 This is a schematic cross-sectional view of the support plate, clamping plate, pump cylinder, and booster cylinder in one embodiment of a toothed groove forming fixture for a serpentine spring coupling.

[0033] Figure 4 for Figure 3 Another structural diagram from another angle.

[0034] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0035] Figure 6 This is a schematic diagram showing the connection relationship between a portion of the clamping mechanism, a portion of the pressurizing and pushing mechanism, and a portion of the adjusting mechanism in one embodiment of a toothed insert forming fixture for a serpentine spring coupling.

[0036] Figure 7 This is an exploded structural diagram of part of the clamping mechanism and part of the pressurizing and pushing mechanism in one embodiment of a toothed insert clamp for a serpentine spring coupling.

[0037] Figure 8 This is a schematic diagram of part of the clamping mechanism in one embodiment of a toothed clamp for forming the tooth groove of a half-coupling of a serpentine spring coupling.

[0038] Figure 9 This is a schematic diagram of the structure of a partial pressure boosting mechanism and a partial adjustment mechanism in one embodiment of a toothed clamp for forming the tooth groove of a half-coupling of a serpentine spring coupling.

[0039] Figure 10 This is a schematic diagram of the structure of part of the adjusting mechanism, cylinder, and piston disc in one embodiment of the tooth groove forming clamp for the half-coupling of the serpentine spring coupling.

[0040] Figure 11 This is an exploded structural diagram of part of the adjustment mechanism in one embodiment of a toothed clamp for forming the tooth groove of a half-coupling of a serpentine spring coupling.

[0041] In the diagram: 1. Support plate; 2. Clamping plate; 201. First sliding groove; 202. Through groove; 3. Rotating sleeve; 4. Worm gear; 5. Worm; 6. First volute; 7. Second volute; 8. First sliding block; 801. Slot; 9. Guide post; 10. Clamping block; 11. First spring; 12. First limiting post; 13. Fixing plate; 1301. Second sliding groove; 14. Pump cylinder; 1401. Limiting ring; 15. First sealing plate; 16. Movable rod; 17. Movable plate; 18. Second sliding block; 19. Second limiting post; 20. Second spring; 21. Cylinder; 22. Piston plate; 23. Guide tube; 24. Pressure booster cylinder; 25. Second sealing plate; 26. Push rod. Detailed Implementation

[0042] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0044] Please see Figures 1-11 In this embodiment of the invention, a tooth-groove forming fixture for a half-coupling of a serpentine spring coupling includes:

[0045] A support plate 1 and a clamping plate 2 disposed on the support plate 1, wherein a fixing plate 13 is disposed inside the support plate 1;

[0046] Also includes:

[0047] A clamping mechanism is provided on the clamping disk 2, including a plurality of clamping blocks 10 distributed equidistantly in a circle, and the clamping mechanism can adjust the spacing between the clamping blocks 10;

[0048] The pressurizing and pushing mechanism is disposed in the support plate 1 and connected to the clamping mechanism. It includes a push rod 26 that abuts against the clamping block 10. The fixed plate 13 is provided with an adjustment mechanism connected to the pressurizing and pushing mechanism. The adjustment mechanism can adjust the thrust provided by the pressurizing and pushing mechanism to the clamping block 10 through the push rod 26 when the clamping mechanism moves.

[0049] Specifically, when performing gear shaping on the tooth groove of the half-coupling, it is necessary to select the corresponding gear according to the tooth groove size and fix the gear. To do this, the protruding shaft of the gear can be inserted into the central hole of the clamping plate 2, and the protruding shaft should abut against the clamping mechanism to ensure maximum insertion depth. Simultaneously, under the action of the clamping mechanism, the clamping blocks 10 are controlled to move towards each other until they abut against the outer wall of the protruding shaft. The clamping blocks 10 ensure that the gear will not wobble during the gear shaping action. At this point, the support plate 1 can be placed on the gear shaping machine, and under the action of the gear shaping machine, the support plate 1 is controlled to reciprocate in the vertical direction. The toothed joint is fitted with teeth by means of a shearing force. Since the teeth are fitted with hard shearing force, the force on the teeth is mainly concentrated at the point where the end of the protruding shaft abuts against the clamping mechanism. In order to avoid stress concentration on the protruding shaft due to the teeth, the clamping mechanism can also drive the adjustment mechanism to move when it fixes the protruding shaft. At the same time, the pressurizing and pushing mechanism cooperates with the adjustment mechanism to adjust the pushing force of the push rod 26 on the clamping block 10 according to the size of the protruding shaft. This allows the clamping force on the protruding shaft to be increased by the clamping block 10 when the teeth are moving, thereby dispersing the stress generated by the teeth and ensuring that there are no slight dimensional deviations during tooth fitting.

[0050] Please see Figures 1-8The clamping mechanism includes a rotating sleeve 3 rotatably mounted within the clamping disk 2, a worm gear 4 mounted on the rotating sleeve 3, and a worm 5 rotatably mounted within the clamping disk 2, meshing with the worm gear 4; it also includes a driven component and an elastic guide component mounted on the clamping disk 2 and connected to the rotating sleeve 3, for adjusting the spacing between the clamping blocks 10. The driven component includes a first volute disk 6 located at the end of the rotating sleeve 3. The clamping disk 2 has multiple first sliding grooves 201 and through grooves 202 that are interconnected and equidistantly distributed circumferentially. A first sliding block 8 is slidably installed in the slide groove 201. The side wall of the first sliding block 8 is provided with a first limiting post 12 that penetrates the through groove 202 and is slidably engaged with the first vortex disk 6. The elastic guide component includes a slot 801 formed on the first sliding block 8. A guide post 9 is provided in the slot 801. The clamping block 10 slides along the axial direction of the guide post 9 and is slidably connected to the slot 801. A first spring 11 is sleeved on the guide post 9. The two ends of the first spring 11 abut against the clamping block 10 and the inner wall of the slot 801, respectively.

[0051] In detail, there are three clamping blocks 10, which fix the protruding shaft of the tooth in a three-point manner. In the initial state, under the action of the first vortex disk 6, the distance between the three first limiting posts 12 is controlled to be the maximum, so that the first sliding block 8 is located at the end of the stroke of the first sliding groove 201 away from the central axis of the clamping disk 2, so that the distance between the three first sliding blocks 8 is the maximum, and the clamping block 10 is located at the end of the stroke of the slot 801 away from the central axis of the clamping disk 2. In this way, the distance between the clamping block 10 and the inner wall of one side of the slot 801 is the maximum, and the elongation of the first spring 11 in the natural state is greater than this distance. Therefore, the first spring 11 is in a pre-compressed state and always provides the clamping block 10 with a thrust in the direction away from the central axis of the clamping disk 2.

[0052] When it is necessary to fix the protruding shaft of the tooth, the protruding shaft can be inserted into the center hole of the clamping plate 2 and the end of the protruding shaft abuts against the rotating sleeve 3. At this time, the size of the protruding shaft inserted into the clamping plate 2 reaches the maximum and it can no longer move into the clamping plate 2.

[0053] At this time, the worm 5 is controlled to rotate, thereby driving the worm wheel 4 to rotate. Under the action of the worm wheel 4, the first volute disk 6 is driven to rotate by rotating the sleeve 3. Since the volute recessed area of ​​the first volute disk 6 is slidably engaged with the first limiting post 12, the first sliding block 8 is controlled to slide radially along the first sliding groove 201 by the first limiting post 12 under the action of the first volute disk 6. The three first sliding blocks 8 move towards each other. The first sliding block 8 will also drive the clamping block 10 to move synchronously through the first spring 11. When the three clamping blocks 10 are all in contact with the outer circumference of the extension shaft, the extension shaft is fixed and in a positioning state, and is kept at the same central axis position as the clamping disk 2. At this time, the worm 5 stops rotating. Since the worm 5 and the worm wheel 4 have a self-locking effect, it can ensure that the position of the first sliding block 8 will not change, thereby ensuring the stability of clamping the extension shaft.

[0054] The gear shaping machine can control the support plate 1 to reciprocate in the vertical direction, so as to drive the gear shaping movement through the clamping block 10 and the extension shaft. Under the action of the gear shaping, the gear shaping action is performed on the half coupling. During the gear shaping process, the gear shaping is mainly subjected to the resistance during shearing, which is transmitted to the extension shaft, thereby increasing the resistance force of the extension shaft on the rotating sleeve 3, resulting in stress concentration on the extension shaft. To address this, a pressure boosting mechanism can be used to provide the clamping block 10 with a larger clamping force, thereby dispersing the stress generated during gear shaping.

[0055] Preferably, when the tooth groove opening size changes, the required tooth size is different. Therefore, when the tooth size changes, the corresponding protruding shaft size also changes. Through the first vortex disk 6, the distance between the clamping blocks 10 can be freely adjusted, thereby enabling clamping actions to be performed on protruding shafts of different sizes, thus increasing the applicability of this application.

[0056] Please see Figures 1-7 , Figures 9-11 The pressurization and pushing mechanism includes a plurality of pump cylinders 14 disposed within the support plate 1 and equidistantly distributed in a circular pattern. Each pump cylinder 14 is provided with a limit ring 1401. A first sealing disc 15 is slidably and sealingly connected within the pump cylinder 14 and abuts against the limit ring 1401. The mechanism also includes a pumping assembly and an air delivery assembly disposed within the pump cylinder 14 and connected to the first sliding block 8 for applying the force of the push rod 26. The pumping assembly includes a cylinder 21 disposed on the side wall of the support plate 1 and penetrating the pump cylinder 14. A piston disc 22 is slidably connected within the pump cylinder 14 and fixedly connected to the telescopic end of the cylinder 21. The air delivery assembly includes a booster cylinder 24 disposed at the end of the first sliding block 8. A second sealing disc 25 is slidably and sealingly connected within the booster cylinder 24 and fixedly connected to the push rod 26. A conduit 23 connected to the pump cylinder 14 is provided on the booster cylinder 24.

[0057] Please see Figure 3 , Figure 4 , Figure 6 , Figures 8-11 The adjustment mechanism includes a second volute 7 disposed at one end of the rotating sleeve 3 away from the first volute 6. A plurality of second sliding grooves 1301 are formed on the fixed plate 13 in a circumferentially equidistant manner. A second sliding block 18 is slidably installed in the second sliding groove 1301. A second limiting post 19 is provided on the side wall of the second sliding block 18 and slidably engages with the second volute 7. The adjustment mechanism also includes a movable plate 17 disposed on the second sliding block 18. A movable rod 16 is provided on the side end of the first sealing plate 15 and passes through the movable plate 17. A second spring 20 is sleeved on the movable rod 16. The two ends of the second spring 20 abut against the movable plate 17 and the first sealing plate 15, respectively.

[0058] Furthermore, when the protruding shaft is not clamped, the distance between the first sliding blocks 8 is at its maximum. Under the action of the second vortex disk 7, the distance between the three second sliding blocks 18 is also at its maximum, controlled by the second limiting post 19. The first sealing disk 15 and the limiting ring 1401 are in contact. In this case, the distance between the movable plate 17 and the first sealing disk 15 is at its minimum. The extension of the second spring 20 in its natural state is greater than this distance. Therefore, the second spring 20 is in a pre-compressed state and always provides the first sealing disk 15 with a thrust away from the movable plate 17. When the movable plate 17 moves in the subsequent movement, it can only move away from the first sealing disk 15. Therefore, the compression of the second spring 20 in this state is at its maximum, and the thrust provided to the first sealing disk 15 is at its maximum.

[0059] In the initial state, the extension of the cylinder 21 is minimal, which maximizes the gap between the piston disc 22 and the limiting ring 1401. Under the action of the piston disc 22, the pressure inside the pump cylinder 14 is the same as the external atmospheric pressure. Thus, the pressure inside the booster cylinder 24 is controlled by the conduit 23 to be the same as the external atmospheric pressure. Under the action of the air pressure, the push rod 26 is controlled by the second sealing disc 25 to abut against the clamping block 10, and the push rod 26 does not provide thrust to the clamping block 10.

[0060] When the protruding shaft is inserted into the clamping disc 2 and abuts against the rotating sleeve 3, the rotating sleeve 3 rotates under the action of the worm gear 4 and the worm 5, thereby driving the first volute disc 6 and the second volute disc 7 to rotate synchronously. Under the action of the first volute disc 6, the three clamping blocks 10 are controlled to move towards each other. At the same time, under the action of the second volute disc 7, the second sliding block 18 is controlled to slide radially along the second slide groove 1301 through the second limiting post 19, thereby driving the movable plate 17 to move, thereby increasing the distance between the movable plate 17 and the first sealing disc 15, so that the elasticity of the second spring 20 is released.

[0061] After the clamping block 10 fixes the protruding shaft, the rotating sleeve 3 stops rotating, and the position of the second sliding block 18 in the second sliding groove 1301 is also fixed. At this time, the distance between the movable plate 17 and the limiting ring 1401 no longer changes, and the thrust provided by the second spring 20 to the first sealing plate 15 no longer changes in this state.

[0062] At this time, the support plate 1 can be placed on the gear shaping machine, and the gear shaping machine controls the support plate 1 to reciprocate in the vertical direction, thereby controlling the gear shaping action on the half coupling. Before the gear shaping action abuts against the half coupling, the cylinder 21 works and pushes the piston plate 22 toward the limiting ring 1401, thereby increasing the pressure in the pump cylinder 14. The pressure will be transmitted to the booster cylinder 24 through the conduit 23, so that the pressure in the booster cylinder 24 always remains consistent with the pressure in the pump cylinder 14. Under the action of the pressure, a thrust is provided to the first sealing plate 15 and the second sealing plate 25. The second sealing plate 25 will provide a thrust to the clamping block 10 through the push rod 26, thereby increasing the pressure. The clamping block 10 increases the clamping force on the protruding shaft. At the same time, when the first sealing disc 15 is pushed, it will move away from the limiting ring 1401 and compress the second spring 20. When the insert tooth abuts against the half coupling, since the protruding shaft is already subjected to a stronger clamping force, when the insert tooth is subjected to shear resistance and transmitted to the protruding shaft, the clamping block 10 can change the force distribution of the protruding shaft, thereby dispersing the high stress located at the end and root of the insert tooth to the vicinity of the clamping area of ​​the protruding shaft. This ensures that the end and root of the protruding shaft will not vibrate due to stress concentration, and avoids fatigue cracks in the protruding shaft caused by stress.

[0063] The greater the force required for the tooth insertion, the larger the tooth needs to be, and the larger the circumferential radius of the tooth's extension shaft. Consequently, the distance between the clamping blocks 10 decreases, and the corresponding distance between the displacements of the second sliding blocks 18 decreases. This reduces the amount of elastic potential energy released by the second spring 20, controlled by the movable plate 17. When the cylinder 21 is working, since the extension and retraction of the cylinder 21 remains consistent each time, the second spring 20, in conjunction with the push rod 26, can provide a greater force to the clamping blocks 10. This allows the push rod 26 to adaptively adjust the thrust provided to the clamping blocks 10 according to the size of the tooth's extension shaft, further dispersing the stress generated during tooth insertion.

[0064] Preferably, through the cooperation of the first volute 6 and the second volute 7, a corresponding clamping force can be provided according to the circumferential radius of the extension shaft, and the compression of the second spring 20 before the cylinder 21 works can be adjusted. In this way, it can ensure that effective clamping can still be provided when the size of the extension shaft changes, and the push rod 26 can adaptively adjust the thrust provided to the clamping block 10 according to the change in the size of the extension shaft, so as to ensure that the stress generated during the cutting of the gear is effectively dispersed during the gear hobbing process.

[0065] A clamping method for a toothed gear shaping fixture for a half-coupling of a serpentine spring coupling includes the following steps:

[0066] Step 1: Insert the teeth to be clamped into the center hole of the clamping disc 2;

[0067] Step 2: Under the action of the clamping mechanism, control the clamping block 10 to move towards each other until the clamping block 10 abuts against the pick teeth;

[0068] Step 3: The clamping mechanism controls the movement of the adjusting mechanism to adjust the force of the push rod 26 according to the size of the tooth;

[0069] Step 4: Under the action of the pressurization and pushing mechanism, a certain thrust is provided to the clamping block 10 through the push rod 26 to adjust the clamping force of the clamping block 10.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A semi-coupling gear slot forming gear-pulling jig of a snake coupling, comprising: a support disc and a clamping disc arranged on the support disc, a fixing plate arranged in the support disc; characterized in that it further comprises: a clamping mechanism arranged on the clamping disc, comprising a plurality of clamping blocks distributed at equal intervals in a circle, the clamping mechanism being capable of adjusting the interval between the clamping blocks; a pressure boosting pushing mechanism arranged in the support disc and connected with the clamping mechanism, comprising a pushing rod in abutting engagement with the clamping blocks, an adjusting mechanism arranged on the fixing plate and connected with the pressure boosting pushing mechanism, the adjusting mechanism being capable of adjusting the pushing force provided by the pressure boosting pushing mechanism to the clamping blocks through the pushing rod when the clamping mechanism moves; the clamping mechanism comprising a rotating sleeve rotatably arranged in the clamping disc, a worm wheel arranged on the rotating sleeve, and a worm rotatably arranged in the clamping disc and in engagement with the worm wheel; further comprising a driven assembly and an elastic guide assembly arranged on the clamping disc and connected with the rotating sleeve for adjusting the interval between the clamping blocks; the driven assembly comprising a first vortex disc arranged at the end of the rotating sleeve, a plurality of first sliding grooves and through grooves arranged on the clamping disc and in communication with each other and distributed at equal intervals in a circle, a first sliding block slidably arranged in the first sliding groove, and a first limiting column arranged on the side wall of the first sliding block and in sliding engagement with the first vortex disc and passing through the through groove; the pressure boosting pushing mechanism comprising a plurality of pump cylinders arranged in the support disc and distributed at equal intervals in a circle, a limiting ring arranged in the pump cylinder, and a first sealing disc slidably and sealingly connected in the pump cylinder and in abutting engagement with the limiting ring; further comprising a pump assembly and a gas feeding assembly arranged in the pump cylinder and connected with the first sliding block for applying the pushing force of the pushing rod; the adjusting mechanism comprising a second vortex disc arranged at the end of the rotating sleeve away from the first vortex disc, a plurality of second sliding grooves arranged on the fixing plate and distributed at equal intervals in a circle, and a second sliding block slidably arranged in the second sliding groove and having a second limiting column arranged on the side wall thereof and in sliding engagement with the second vortex disc.

2. The spline slot forming gear shaping jig for the half-coupling of the snake spring coupling according to claim 1, wherein the elastic guide assembly comprising a clamping groove arranged on the first sliding block, a guide column arranged in the clamping groove, the clamping block being axially slid along the guide column and in sliding connection with the clamping groove, a first spring sleeved on the guide column, and the two ends of the first spring being in abutting engagement with the clamping block and the inner wall of the clamping groove, respectively.

3. The spline slot forming gear shaping jig for the half-coupling of the snake spring coupling according to claim 1, wherein the pump assembly comprising a cylinder arranged on the side wall of the support disc and passing through the pump cylinder, and a piston disc slidably connected in the pump cylinder and fixedly connected with the telescopic end of the cylinder.

4. The spline slot forming gear shaping jig for the half-coupling of the snake spring coupling according to claim 1, wherein the gas feeding assembly comprising a pressure boosting cylinder arranged at the end of the first sliding block, a second sealing disc slidably and sealingly connected in the pressure boosting cylinder and fixedly connected with the pushing rod, and a conduit connected with the pump cylinder and arranged on the pressure boosting cylinder.

5. The spline slot forming gear shaping jig for the half-coupling of the snake spring coupling according to claim 1, wherein, The adjusting mechanism further comprises a movable plate arranged on the second sliding block, a movable rod penetrating through the movable plate is arranged at the side end of the first sealing disc, a second spring is sleeved on the movable rod, and two ends of the second spring are respectively in abutment with the movable plate and the first sealing disc.

6. A clamping method of a semi-coupling gear slot forming gear shaping jig for a snake spring coupling, which adopts the semi-coupling gear slot forming gear shaping jig for a snake spring coupling according to any one of claims 1 to 5, characterized in that, The method comprises the following steps: Step one: inserting the pin gear to be clamped into the center hole of the clamping disc; Step two: under the action of the clamping mechanism, the clamping blocks are controlled to move towards each other until the clamping blocks abut against the pin gear; Step three: the adjusting mechanism is controlled to move by the clamping mechanism to adjust the acting force of the push rod according to the size of the pin gear; Step four: under the action of the boosting pushing mechanism, a certain pushing force is provided to the clamping blocks by the push rod to adjust the clamping force of the clamping blocks.

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