Fixture device for worm key groove machining

Abstract

The utility model relates to the technical field of worm machining, in particular to a clamp device for worm key groove machining, which comprises a base and a support frame, the support frame is positioned on one side of the base, a clamping assembly for clamping a worm is arranged at the top of the base, and the clamping assembly comprises two first fixing frames slidably connected to the top of the base. A rotating wheel is rotationally clamped to one side of the top of the first fixing frame, and an adjusting ring is rotationally clamped to one side of the rotating wheel. By means of the clamping assembly, the two rotating wheels which are symmetrically arranged and the driving assembly, the two worms can be symmetrically placed and machined at the same time, machining efficiency is greatly improved, machining time is shortened, and production efficiency and productivity can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of worm processing, in particular to a fixture device for worm keyway processing. Background Art

[0002] A worm refers to a gear with one or several helical teeth that meshes with a worm wheel to form an intersecting-axis gear pair. With the continuous development of the machinery manufacturing industry, the requirements for the machining accuracy and efficiency of parts are increasing day by day. As an important component in the transmission system, the machining quality of the worm directly affects the performance and service life of the entire transmission system. Therefore, during the machining process of the worm, a fixture device is required to clamp and machine it to ensure the dimensional accuracy, shape accuracy, and position accuracy of the worm keyway.

[0003] In the prior art, such as the "fixed fixture for worm production and processing" with the Chinese patent number: CN213764957U, screw holes are provided on the upper surface of the workbench, and the inner wall of the screw hole is fixedly connected with a fixed plate through bolts, and the lower surface of the lower body of the fixture is fixedly connected with a mounting block. Although this technology compresses the pressure spring inside the outer rod through the piston rod, and the pressure spring provides pressure for the clamping plate to make the worm not easy to move and improves the clamping effect of the fixture, it is the same as the traditional method: when the traditional fixture is used, a single-station processing method is usually adopted, and only one worm can be processed at a time, resulting in low production efficiency and inability to process multiple worms simultaneously, restricting the production capacity. At the same time, the position of the traditional fixture is fixed. Due to the different lengths of the screws, the traditional fixture can only process screws of one length during machining, which further leads to the lack of flexibility of the traditional fixture and inability to quickly adapt to worms of different lengths and diameters, restricting the application range of the equipment. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a fixture device for worm keyway processing to solve the problems of low working efficiency and lack of flexibility existing in the existing fixtures.

[0005] Based on the above purpose, the utility model provides a clamping device for worm keyway processing, comprising a base and a supporting frame, the supporting frame is located on one side of the base, a clamping assembly for clamping the worm is arranged on the top of the base, the clamping assembly comprises two first fixing frames slidably connected to the top of the base, a rotating wheel is rotatably clamped on one side of the top of the first fixing frame, an adjusting ring is rotatably clamped on one side of the rotating wheel, three clamping rods are rotatably connected to one side of the rotating wheel through an axis, an arc plate is fixedly connected to one end of the clamping rod, a fixing assembly for assisting the worm to be stably clamped is also arranged on the top of the base, the fixing assembly comprises two second fixing frames slidably connected to the top of the base and two third fixing frames slidably connected to the top of the base, The top of the second fixing frame is fixedly connected with a fixing ring, the interior of the fixing ring is annularly fixedly connected with a plurality of positioning cylinders, the interior of the positioning cylinder is slidably connected with an extrusion rod, one end of the extrusion rod is fixedly connected with an arc block, one side of the support frame is provided with a driving assembly for driving the clamping assembly to rotate to facilitate the processing of the worm, the driving assembly includes a spline rod rotatably connected to one side of the top of the support frame, the external sliding clamping of the spline rod has two transmission wheels, one side of the two transmission wheels is respectively connected to the external transmission of the two rotating wheels through belts, one end of the support frame is installed with a motor, one side of the motor is installed with an adjustment mechanism, the adjustment mechanism is used to adjust the positions of the clamping assembly and the fixing assembly to adapt to worms of different lengths for processing.

[0006] Preferably, the positions of the two first fixing frames are symmetrically arranged, an adjusting ring is rotatably clamped on one side of the rotating wheel, and three positioning blocks are rotatably clamped on the side of the adjusting ring away from the rotating wheel through an axis, the interior of the positioning block is slidably connected to the outside of the clamping rod, a connecting hole is opened in the middle of the rotating wheel, the positions of the three clamping rods are equidistantly arranged in a ring shape outside the connecting hole, and the outer shape formed by the three arc-shaped plates is circular.

[0007] Preferably, a fixed block is rotatably connected to one side of the rotating wheel, a threaded rod is rotatably connected to the inside of the fixed block, a toggle block is fixedly connected to the outside of the adjusting ring, a movable ring is rotatably connected to one side of the toggle block through an axis, the inside of the movable ring is threadedly connected to the outside of the threaded rod, a positioning plate is fixedly connected to one side of the fixed block, the threaded rod passes through the fixed block and one end of the positioning plate and is fixedly connected to the adjusting wheel, an insertion rod is slidably connected to the inside of the adjusting wheel, one end of the insertion rod is provided with a thread, a plurality of threaded holes are provided in a ring shape on one side of the positioning plate, and the specification of the thread at one end of the insertion rod is matched with the specification of the threaded hole on one side of the positioning plate.

[0008] Preferably, the positions of the two second fixing frames are symmetrically arranged and are respectively located on one side of the first fixing frame. A pressing spring is installed inside the positioning cylinder. A pressing rod is sleeved inside the pressing spring, and one end of the pressing spring is fixedly connected to the outside of one end of the pressing rod. The other end of the pressing spring is fixedly connected to the inside of the positioning cylinder away from the arc-shaped block.

[0009] Preferably, a plurality of pulleys are rotatably connected to one side of the arc-shaped block through shafts. The rotation direction of the pulleys is the same as the rotation direction of the worm. The outer shape formed by the plurality of arc-shaped blocks is in the shape of an annular horn, and the positions in the middle of the plurality of arc-shaped blocks correspond to the positions in the middle of the runner.

[0010] Preferably, the third fixing frame is located on the side of the first fixing frame away from the second fixing frame. A plurality of buffer springs are fixedly connected to the top of the third fixing frame. The top ends of the buffer springs are fixedly connected to a fixing plate. The outer shape of the fixing plate is semi-circular arc-shaped, and the height of the fixing plate is equal to the height of the middle part of the runner.

[0011] Preferably, the outer shape of the spline on the spline rod is cross-shaped. A cross-shaped flower hole is opened inside the transmission wheel. The specification size of the cross-shaped flower hole inside the transmission wheel is adapted to the outer shape of the spline on the spline rod.

[0012] Preferably, the adjusting mechanism includes a first screw rod and a second screw rod rotatably connected inside the base. One end of the first screw rod is fixedly connected to one end of the second screw rod, and the thread direction of the outside of the first screw rod is opposite to the thread direction of the outside of the second screw rod. A chute is opened at the top of the base. Movable blocks are respectively threadedly connected to the outsides of the first screw rod and the second screw rod. One side of the bottom of the second fixing frame is fixedly connected to one side of the bottom of the first fixing frame. The other side of the bottom of the first fixing frame is fixedly connected to one side of the bottom of the third fixing frame. The top of the movable block penetrates through the chute and is fixedly connected to the bottom of the first fixing frame.

[0013] Preferably, a connecting cylinder is rotatably connected to one side of the support frame. A driving wheel is fixedly connected to the end of the connecting cylinder away from the support frame. One end of the spline rod penetrates through the inside of the support frame and is fixedly connected to a connecting shaft. One end of the connecting shaft penetrates through the inside of the connecting cylinder and the driving wheel and is fixedly connected to a ratchet wheel. The other side of the ratchet wheel is fixedly connected to the output shaft of the motor.

[0014] Preferably, one side of the driving wheel is connected to a plurality of ratchets in a circular manner through an axis, one end of the ratchets is engaged with the outside of the ratchet, one side of the driving wheel is fixedly connected to a plurality of fixing columns in a circular manner, one side of the plurality of fixing columns is fixedly connected to a first spring, one end of the first spring away from the fixing column is fixedly connected to one side of one end of the ratchets, one end of the first screw rod passing through the base is fixedly connected to a driven wheel, and one side of the driving wheel is connected to the external transmission of the driven wheel through a belt.

[0015] Beneficial effects of the utility model:

[0016] 1. By setting the clamping assembly, the symmetrical arrangement of the two wheels and the driving assembly, the two worms can be placed symmetrically and processed at the same time, which greatly improves the processing efficiency. This not only reduces the processing time, but also improves the production efficiency and capacity.

[0017] By setting up the fixing assembly, the end and the middle and rear part of the worm can be fixed, which facilitates the clamping of the clamping assembly and the processing of the worm. At the same time, it can maintain the balance and stability of the worm, reduce vibration and deviation, and improve the processing accuracy and consistency.

[0018] By setting up the driving assembly, only one driving source is needed to drive two worms to perform rotation processing at the same time, which simplifies the driving system, reduces the complexity and energy consumption of the equipment, and saves energy and cost.

[0019] The positions of the clamping assembly and the fixing assembly can be adjusted by means of the arranged adjusting mechanism to adapt to the processing of worms of different lengths and diameters, thereby increasing the application scope and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall side cross-sectional structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the utility model;

[0024] Figure 4 This is a schematic diagram of the side cross-sectional structure of the fixing ring of the utility model;

[0025] Figure 5 Schematic diagram of the connection structure between the ratchet and the ratchet catch of the present utility model;

[0026] Figure 6 Top view sectional structure schematic diagram of the driving wheel of the present utility model.

[0027] The markings in the figure are:

[0028] 1. Base; 2. First fixing frame; 3. Second fixing frame; 4. Third fixing frame; 5. Support frame; 6. Motor; 7. Runner; 8. Adjusting ring; 9. Clamping rod; 10. Positioning block; 11. Arc-shaped plate; 12. Connecting cylinder; 13. Connecting shaft; 14. Poking block; 15. Moving ring; 16. Fixed block; 17. Positioning disk; 18. Adjusting wheel; 19. Threaded rod; 20. Fixed ring; 21. Positioning cylinder; 22. Compression spring; 23. Extrusion rod; 24. Arc-shaped block; 25. Pulley; 26. Driving wheel; 27. Spline rod; 28. First screw; 29. Second screw; 30. Movable block; 31. Buffer spring; 32. Fixed plate; 33. Driven wheel; 34. Ratchet; 35. Ratchet catch; 36. Driving wheel. Specific embodiments

[0029] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments.

[0030] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those with ordinary skills in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] Refer to the present utility model Figures 1 to 6The device shown provides a clamp device for processing a worm keyway, including a base 1 and a support frame 5, the support frame 5 is located on one side of the base 1, and a clamping assembly for clamping the worm is arranged on the top of the base 1, and the clamping assembly includes two first fixing frames 2 slidably connected to the top of the base 1, a rotating wheel 7 is rotatably clamped on one side of the top of the first fixing frame 2, and an adjusting ring 8 is rotatably clamped on one side of the rotating wheel 7, and three clamping rods 9 are rotatably connected to one side of the rotating wheel 7 through an axis, and an arc plate 11 is fixedly connected to one end of the clamping rod 9, and a fixing assembly for assisting the worm to be stably clamped is also arranged on the top of the base 1, and the fixing assembly includes two second fixing frames 3 slidably connected to the top of the base 1 and two third fixing frames 4 slidably connected to the top of the base 1, and the second fixing frames 3 are A fixing ring 20 is fixedly connected to the top, and a plurality of positioning cylinders 21 are fixedly connected to the interior of the fixing ring 20 in an annular shape. An extrusion rod 23 is slidably connected to the interior of the positioning cylinder 21, and an arc block 24 is fixedly connected to one end of the extrusion rod 23. A driving assembly for driving the clamping assembly to rotate to facilitate the processing of the worm is provided on one side of the support frame 5. The driving assembly includes a spline rod 27 rotatably connected to one side of the top of the support frame 5, and the outer sliding clamp of the spline rod 27 is connected to two transmission wheels 26. One side of the two transmission wheels 26 is connected to the external transmission of the two rotating wheels 7 through belts. A motor 6 is installed at one end of the support frame 5, and an adjustment mechanism is installed on one side of the motor 6. The adjustment mechanism is used to adjust the positions of the clamping assembly and the fixing assembly to adapt to worms of different lengths for processing;

[0032] By setting up the clamping assembly, by setting up the two wheels 7 in a symmetrical arrangement and the driving assembly, the two worms can be placed symmetrically and processed simultaneously, which greatly improves the processing efficiency. This not only reduces the processing time, but also improves production efficiency and capacity.

[0033] like Figures 1 to 3As shown in the figure, the positions of the two first fixing brackets 2 are symmetrically arranged. One side of the rotating wheel 7 is rotatably clamped with an adjusting ring 8. One side of the adjusting ring 8 away from the rotating wheel 7 is rotatably clamped with three positioning blocks 10 through a shaft. The inside of the positioning block 10 is slidably connected to the outside of the clamping rod 9. A connecting hole is formed in the middle of the rotating wheel 7. The positions of the three clamping rods 9 are arranged at equal intervals in a circular shape outside the connecting hole. The outer shape formed by the three arc-shaped plates 11 is circular. One side of the rotating wheel 7 is rotatably clamped with a fixing block 16. A threaded rod 19 is rotatably connected inside the fixing block 16. An operating block 14 is fixedly connected to the outside of the adjusting ring 8. One side of the operating block 14 is rotatably clamped with a moving ring 15 through a shaft. The inside of the moving ring 15 is threadedly connected to the outside of the threaded rod 19. One side of the fixing block 16 is fixedly connected with a positioning disk 17. One end of the threaded rod 19 passing through the fixing block 16 and the positioning disk 17 is fixedly connected with an adjusting wheel 18. A plug rod is slidably connected inside the adjusting wheel 18. One end of the plug rod is provided with threads. A plurality of threaded holes are formed in a circular shape on one side of the positioning disk 17. The specification of the threads at one end of the plug rod is adapted to the specification of the threaded holes on one side of the positioning disk 17;

[0034] By providing the arc-shaped plates 11 and the threaded rod 19, it is convenient to clamp the worm. When clamping, one ends of the two worms are respectively inserted into the connecting holes in the middle of the two rotating wheels 7. At this time, the adjusting wheel 18 is rotated to cause the threaded rod 19 to rotate. At the same time, the moving ring 15 is caused to move by the action of the threads. By providing that the moving ring 15 is rotatably clamped with the operating block 14, the operating block 14 will drive the adjusting ring 8 to rotate. At this time, the positioning block 10 will drive the clamping rod 9 to move, so that the arc-shaped plates 11 at one ends of the three clamping rods 9 converge towards the middle, and then the three arc-shaped plates 11 clamp one end of the worm. At this time, by providing the threaded holes on one side of the positioning disk 17 and the plug rod inside the adjusting wheel 18, one end of the plug rod is rotated into the threaded hole by using the threads, so that the position of the arc-shaped plate 11 is fixed, and at the same time the worm will be fixed inside the three arc-shaped plates 11, thus achieving the clamping effect.

[0035] As Figures 2 to 4As shown in the figure, the positions of the two second fixing frames 3 are symmetrically arranged and are respectively located on one side of the first fixing frame 2. A pressing spring 22 is installed inside the positioning cylinder 21. An extrusion rod 23 is sleeved inside the pressing spring 22. One end of the pressing spring 22 is fixedly connected to the outside of one end of the extrusion rod 23. The other end of the pressing spring 22 is fixedly connected to the inside of the positioning cylinder 21 away from one end of the arc-shaped block 24. A plurality of pulleys 25 are rotatably connected to one side of the arc-shaped block 24 through a shaft. The rotation direction of the pulleys 25 is the same as the rotation direction of the worm. The outer shape formed by the plurality of arc-shaped blocks 24 is in the shape of an annular horn, and the positions in the middle of the plurality of arc-shaped blocks 24 correspond to the positions in the middle of the runner 7. The position of the third fixing frame 4 is located on the side of the first fixing frame 2 away from the second fixing frame 3. A plurality of buffer springs 31 are fixedly connected to the top of the third fixing frame 4. The top ends of the buffer springs 31 are fixedly connected to a fixing plate 32. The outer shape of the fixing plate 32 is in a semi-circular arc shape, and the height of the fixing plate 32 is equal to the height of the middle part of the runner 7;

[0036] Through the set fixing component, the end and the middle and rear parts of the worm can be fixed, which facilitates the clamping of the clamping component and the processing of the worm. At the same time, the balance and stability of the worm can be maintained, vibrations and deviations are reduced, and the processing accuracy and consistency are improved. When the worm is inserted into the inside of the runner 7, the end of the worm will move to the middle of the plurality of arc-shaped blocks 24. At this time, due to the outer shape of the plurality of arc-shaped blocks 24 being in the shape of an annular horn, the end of the worm will squeeze the plurality of pulleys 25 apart from each other. At this time, during the squeezing, the arc-shaped block 24 pushes one end of the extrusion rod 23 to move. At this time, the extrusion rod 23 will squeeze the pressing spring 22 to contract. After that, when the end of the entire worm completely enters the middle of the plurality of arc-shaped blocks 24, through the mutual extrusion of the plurality of pressing springs 22, the end of the worm is fixed, which facilitates the processing of the worm after clamping. At the same time, by setting the buffer springs 31 and the fixing plate 32, the middle and rear parts of the worm can be stabilized. Before the worm is inserted into the middle of the runner 7, it will slide over the top of the fixing plate 32. After the worm is clamped and fixed, the middle and rear parts of the worm will rest on the top of the fixing plate 32, thus playing a role in stabilizing the middle and rear parts of the worm. At the same time, by setting the buffer springs 31, worms with different diameters can be clamped.

[0037] As Figures 1 to 6 shown, the outer shape of the external spline of the spline rod 27 is in a cross shape. A cross-shaped flower hole is opened inside the transmission wheel 26. The specification size of the cross-shaped flower hole inside the transmission wheel 26 is adapted to the outer shape of the external spline of the spline rod 27;

[0038] Through the provided driving components, only one driving source is required to simultaneously drive two worm gears for rotational machining. This simplifies the driving system, reduces the complexity and energy consumption of the equipment, saves energy and costs. When machining by rotating the worm gear, the spline shaft 27 will rotate. At this time, by setting a cross spline outside the spline shaft 27, the spline shaft 27 will drive the transmission wheel 26 to rotate. Meanwhile, it causes the transmission wheel 26 to drive the runner 7 to rotate via a belt, and further causes the runner 7 to drive the worm gear to rotate, thus facilitating the machining of the worm gear. At the same time, by setting two transmission wheels 26, one spline shaft 27 can be used to drive two transmission wheels 26 to rotate, and further causes two runners 7 to simultaneously drive two worm gears to rotate, thereby achieving the effects of simplifying the driving system, saving energy, and improving work efficiency.

[0039] As Figures 1 to 6 shown, the adjusting mechanism includes a first screw rod 28 and a second screw rod 29 rotatably connected inside the base 1. One end of the first screw rod 28 is fixedly connected to one end of the second screw rod 29, and the direction of the external thread of the first screw rod 28 is opposite to the direction of the external thread of the second screw rod 29. A chute is provided at the top of the base 1. Movable blocks 30 are respectively threadedly connected to the outside of the first screw rod 28 and the second screw rod 29. One side of the bottom of the second fixing frame 3 is fixedly connected to one side of the bottom of the first fixing frame 2. The other side of the bottom of the first fixing frame 2 is fixedly connected to one side of the bottom of the third fixing frame 4. The top of the movable block 30 penetrates through the chute and is fixedly connected to the bottom of the first fixing frame 2. One side of the support frame 5 is rotatably connected to a connecting cylinder 12. The end of the connecting cylinder 12 away from the support frame 5 is fixedly connected to a driving wheel 36. One end of the spline shaft 27 penetrates through the inside of the support frame 5 and is fixedly connected to a connecting shaft 13. One end of the connecting shaft 13 penetrates through the inside of the connecting cylinder 12 and the driving wheel 36 and is fixedly connected to a ratchet wheel 34. The other side of the ratchet wheel 34 is fixedly connected to the output shaft of the motor 6. A plurality of ratchet catches 35 are annularly rotatably connected to one side of the driving wheel 36 via a shaft. One end of the ratchet catch 35 is engaged with the outside of the ratchet wheel 34. A plurality of fixing columns are annularly fixedly connected to one side of the driving wheel 36. One side of the plurality of fixing columns is fixedly connected to a first spring. The end of the first spring away from the fixing column is fixedly connected to one side of one end of the ratchet catch 35. The end of the first screw rod 28 penetrating through the base 1 is fixedly connected to a driven wheel 33. One side of the driving wheel 36 is drivingly connected to the outside of the driven wheel 33 via a belt;

[0040] Through the provided adjusting mechanism, the positions of the clamping assembly and the fixing assembly can be adjusted to adapt to the processing of worms with different lengths and diameters, increasing the applicable range and flexibility of the device. During the processing of the worm, the motor 6 will start and drive the ratchet wheel 34 to rotate in the reverse direction, thereby causing the ratchet wheel 34 to disengage from the ratchet card 35, and further causing the ratchet wheel 34 to drive the spline shaft 27 to rotate in the reverse direction, thus facilitating the processing of the worm. After that, when processing worms with different lengths, the motor 6 is started to drive the ratchet wheel 34 to rotate forward. At this time, the ratchet wheel 34 will be latched with the ratchet card 35, and at the same time, the spline shaft 27 and the driving wheel 36 will rotate. At this time, the driving wheel 36 will drive the first screw rod 28 and the second screw rod 29 to rotate through the belt. At this time, the two movable blocks 30 will drive the two first fixing frames 2 to move respectively. By setting the thread directions of the first screw rod 28 and the second screw rod 29 to be opposite, the two fixing rings 20 will move away from each other, so that more of the end of the worm can be placed on the side of the fixing ring 20 away from the runner 7, thereby adapting to the processing of long worms, and at the same time avoiding the problem of collision between the two workstations.

[0041] Those of ordinary skill in the art should understand that the discussion of any embodiment above is only exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0042] The present invention aims to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fixture device for machining a worm keyway, characterized in that: The invention comprises a base (1) and a support frame (5), wherein the support frame (5) is located on one side of the base (1), and a clamping assembly for clamping the worm is arranged on the top of the base (1), and the clamping assembly comprises two first fixing frames (2) slidably connected to the top of the base (1), a rotating wheel (7) is rotatably clamped on one side of the top of the first fixing frames (2), an adjusting ring (8) is rotatably clamped on one side of the rotating wheel (7), and three clamping rods (9) are rotatably connected to one side of the rotating wheel (7) via an axis, and one end of the clamping rod (9) is fixedly connected to an arc plate (11); the top of the base (1) is also provided with a fixing assembly for assisting the worm in stably clamping, and the fixing assembly comprises two second fixing frames (3) slidably connected to the top of the base (1) and two third fixing frames (4) slidably connected to the top of the base (1), and the top of the second fixing frames (3) is fixedly connected to A fixing ring (20) is provided, wherein the interior of the fixing ring (20) is annularly fixedly connected with a plurality of positioning cylinders (21), the interior of the positioning cylinder (21) is slidably connected with an extrusion rod (23), and one end of the extrusion rod (23) is fixedly connected with an arc block (24); one side of the support frame (5) is provided with a driving assembly for driving a clamping assembly to rotate so as to facilitate the processing of the worm, the driving assembly comprises a spline rod (27) rotatably connected to one side of the top of the support frame (5), the exterior of the spline rod (27) is slidably clamped with two transmission wheels (26), one side of the two transmission wheels (26) is respectively connected to the external transmission of two rotating wheels (7) through belts, one end of the support frame (5) is installed with a motor (6), and one side of the motor (6) is installed with an adjustment mechanism, the adjustment mechanism is used to adjust the positions of the clamping assembly and the fixing assembly to adapt to the processing of worms of different lengths.

2. A worm keyway machining fixture according to claim 1, characterized in that: The positions of the two first fixing frames (2) are symmetrically arranged, an adjusting ring (8) is rotatably clamped on one side of the rotating wheel (7), and three positioning blocks (10) are rotatably clamped on the side of the adjusting ring (8) away from the rotating wheel (7) through an axis, the interior of the positioning block (10) is slidably connected to the outside of the clamping rod (9), a connecting hole is opened in the middle of the rotating wheel (7), the positions of the three clamping rods (9) are arranged in a ring shape at equal distances outside the connecting hole, and the outer shape formed by the three arc-shaped plates (11) is circular.

3. A worm keyway machining fixture according to claim 2, characterized in that: A fixed block (16) is rotatably connected to one side of the rotating wheel (7), and a threaded rod (19) is rotatably connected to the inside of the fixed block (16). A toggle block (14) is fixedly connected to the outside of the adjusting ring (8). A moving ring (15) is rotatably connected to one side of the toggle block (14) via an axis. The inside of the moving ring (15) is threadably connected to the outside of the threaded rod (19). A positioning disk (17) is fixedly connected to one side of the fixed block (16). One end of the threaded rod (19) passes through the fixed block (16) and the positioning disk (17) and is fixedly connected to an adjusting wheel (18). An insert rod is slidably connected to the inside of the adjusting wheel (18), and one end of the insert rod is provided with a thread. A plurality of threaded holes are provided in an annular shape on one side of the positioning disk (17). The specification of the thread at one end of the insert rod matches the specification of the threaded holes on one side of the positioning disk (17).

4. A worm keyway machining fixture according to claim 1, characterized in that: The two second fixing frames (3) are symmetrically arranged and are respectively located on one side of the first fixing frame (2); a pressure spring (22) is installed inside the positioning cylinder (21); an extrusion rod (23) is sleeved inside the pressure spring (22); one end of the pressure spring (22) is fixedly connected to the outside of one end of the extrusion rod (23); and the other end of the pressure spring (22) is fixedly connected to the inside of one end of the positioning cylinder (21) away from the arc block (24).

5. A worm keyway machining fixture according to claim 4, characterized in that: One side of the arc block (24) is rotatably connected to a plurality of pulleys (25) via an axis, the pulleys (25) rotate in the same direction as the worm, the plurality of arc blocks (24) form an annular trumpet-shaped shape, and the middle portions of the plurality of arc blocks (24) correspond to the middle portions of the rotating wheel (7).

6. A worm keyway machining fixture according to claim 4, characterized in that: The third fixing frame (4) is located on a side of the first fixing frame (2) away from the second fixing frame (3); a plurality of buffer springs (31) are fixedly connected to the top of the third fixing frame (4); a fixing plate (32) is fixedly connected to the top of the buffer spring (31); the fixing plate (32) has a semicircular arc shape, and the height of the fixing plate (32) is equal to the height of the middle of the rotating wheel (7).

7. A worm keyway machining fixture according to claim 1, characterized in that: The external splines of the spline rod (27) are in a cross shape, and a cross hole is provided inside the transmission wheel (26). The size of the cross hole inside the transmission wheel (26) matches the external splines of the spline rod (27).

8. A worm keyway machining fixture according to claim 1, characterized in that: The adjustment mechanism comprises a first screw rod (28) and a second screw rod (29) which are rotatably connected to the inside of the base (1); one end of the first screw rod (28) is fixedly connected to one end of the second screw rod (29); and the direction of the external thread of the first screw rod (28) is opposite to the direction of the external thread of the second screw rod (29); a slide groove is provided on the top of the base (1); the outsides of the first screw rod (28) and the second screw rod (29) are respectively threadedly connected to movable blocks (30); one side of the bottom of the second fixing frame (3) is fixedly connected to one side of the bottom of the first fixing frame (2); the other side of the bottom of the first fixing frame (2) is fixedly connected to one side of the bottom of the third fixing frame (4); and the top of the movable block (30) passes through the slide groove and is fixedly connected to the bottom of the first fixing frame (2).

9. A worm keyway machining fixture according to claim 8, characterized in that: One side of the support frame (5) is rotatably connected to a connecting cylinder (12); one end of the connecting cylinder (12) away from the support frame (5) is fixedly connected to a driving wheel (36); one end of the spline rod (27) passes through the interior of the support frame (5) and is fixedly connected to a connecting shaft (13); one end of the connecting shaft (13) passes through the interior of the connecting cylinder (12) and the driving wheel (36) and is fixedly connected to a ratchet (34); the other side of the ratchet (34) is fixedly connected to an output shaft of the motor (6).

10. A worm keyway machining fixture according to claim 9, characterized in that: One side of the driving wheel (36) is connected to a plurality of ratchet clips (35) in an annular rotational manner via an axis, one end of the ratchet clip (35) is engaged with the outside of the ratchet wheel (34), one side of the driving wheel (36) is fixedly connected to a plurality of fixing columns in an annular manner, one side of the plurality of fixing columns is fixedly connected to a first spring, one end of the first spring away from the fixing column is fixedly connected to one side of one end of the ratchet clip (35), one end of the first screw rod (28) passing through the base (1) is fixedly connected to a driven wheel (33), and one side of the driving wheel (36) is connected to the outside of the driven wheel (33) through a belt.

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