Angle adjusting type gear hobbing machine for gear machining and gear

Abstract

The utility model discloses an angle adjusting type gear hobbing machine for gear machining, which comprises a base, an adjusting guide rail is fixedly mounted on one side of the top of the base, a limiting sliding groove is formed in the outer side of the adjusting guide rail, an adjusting sliding block is slidably mounted in the limiting sliding groove, positioning holes are uniformly formed in one side of the adjusting guide rail, and the adjusting sliding block is slidably mounted in the limiting sliding groove. The structural design that the orientation angle of a workpiece can be adjusted is adopted, the angle of the workpiece can be adjusted according to machining requirements, so that an included angle is formed between the workpiece and the hob, and under the condition that the hob is fixed in a static state, the hob can be fixed in the fixed state, and the machining efficiency is improved. A user can flexibly select straight tooth machining or helical tooth machining on the machine according to machining requirements, multiple purposes are achieved through one machine, the machining efficiency of the workpiece is improved, and convenience is provided for work and use of the user.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, in particular to an angle-adjustable gear hobbing machine for gear processing and a gear. Background Art

[0002] The working mode of the gear hobbing machine is to use a rod-shaped or tube-shaped cylindrical gear hobbing cutter to extrude and shape the surface of the workpiece, which can meet the processing parameter requirements of the product to the greatest extent and simplify the production process. The traditional gear hobbing machine will place the product close to the hob when working, and perform gear hobbing on the surface of the product under the static extrusion of the hob. Therefore, the static hob is difficult to adjust, which limits the processing angle of the tooth pattern on the surface of the gear product. In other words, the currently used gear hobbing machine can no longer process helical teeth when processing straight teeth, because the working angle of the hob cannot be adjusted, and the product is also fixed and can only move in a basic linear position, which limits the actual working range of the gear hobbing machine. To meet the requirements of helical tooth processing, corresponding equipment needs to be purchased, and the cost investment is increased.

[0003] In view of the above problems, the present invention makes improvements. Summary of the Invention

[0004] The utility model provides an angle-adjustable gear hobbing machine and a gear for gear processing, which solve the above-mentioned problems existing in the use process of the prior art.

[0005] The technical solution of the utility model is achieved as follows: a gear hobbing machine for angle-adjustable gear processing, comprising a base, an adjusting guide rail fixedly installed on one side of the top of the base, a limiting slide groove being provided on the outer side of the adjusting guide rail, an adjusting slider being slidably installed inside the limiting slide groove, evenly distributed positioning holes being provided on one side of the adjusting guide rail, a fixing rod being fixedly connected to one side of the adjusting slider, a positioning pin 1 being inserted into the interior of one of the positioning holes, one end of the positioning pin 1 being inserted into the interior of the fixing rod, an adjusting arm being detachably installed on the end of the fixing rod away from the adjusting slider, and a clamp being fixedly installed on one end of the adjusting arm.

[0006] The angle-adjustable gear hobbing machine of the present invention is further provided with: an adjusting arm comprising an adjusting plate fixedly connected to the clamper, and a plurality of adjusting holes are provided on one side of the adjusting plate.

[0007] The angle-adjustable gear hobbing machine of the present invention is further characterized in that: an adjusting rod is inserted into the interior of one of the adjusting holes, and one end of the adjusting rod passes through the fixing rod to the outside of the adjusting slider.

[0008] The utility model is a gear hobbing machine for angle-adjustable gear processing, further comprising: a locking nut 1 and a locking nut 2 are threadedly mounted on the surface of the adjusting rod, and the locking nut 1 and the locking nut 2 are respectively located on both sides of the adjusting plate.

[0009] The utility model is a gear hobbing machine for angle-adjustable gear processing as described above, further comprising: a fixing frame fixedly mounted on one side of the base, a bidirectional threaded rod rotatably mounted on the inner side of the fixing frame, sliders sliding in the fixing frame are threadedly mounted on both sides of the surface of the bidirectional threaded rod, a mounting frame is fixedly mounted on the top of the slider, a stepping motor is fixedly mounted on one side of the mounting frame, and the output shaft of the stepping motor passes through the interior of the mounting frame and is fixedly mounted with a hob.

[0010] The utility model is a gear hobbing machine for angle-adjustable gear processing as described above, further comprising: one end of the surface of the bidirectional threaded rod is fixedly connected to a fixed circular plate located on the outside of the fixed frame, a frame fixedly connected to one side of the fixed frame is provided on the outside of the fixed circular plate, a positioning pin 2 is provided through one side of the frame, one end of the positioning pin 2 is inserted into the interior of the fixed circular plate, and a plurality of sockets matching the positioning pin 2 are provided on the surface of the fixed circular plate.

[0011] A gear, wherein a cylindrical gear is clamped inside the clamp, the surface of the cylindrical gear is hobbed with helical teeth, and one end of the surface of the cylindrical gear is hobbed with straight teeth.

[0012] In summary, the beneficial effects of the present invention are:

[0013] 1. The utility model adopts a structural design that can adjust the orientation angle of the workpiece. The workpiece can be adjusted in angle according to processing requirements so that the workpiece and the hob form an angle. When the hob is statically fixed, helical teeth can be processed on the workpiece. Users can flexibly choose straight tooth processing or helical tooth processing on the machine according to processing requirements, realizing multi-purpose use of one machine, improving the processing efficiency of the workpiece, and providing convenience for users' work.

[0014] 2. The utility model has a plurality of adjustment holes on the adjustment plate through the arrangement of the adjustment plate and the adjustment hole. The adjustment plate is also used to adjust the processing position of the workpiece. The position of the adjustment plate is moved according to whether the workpiece is aligned with the two hobs to adjust the processing position of the workpiece. When adjusting, it is only necessary to loosen and remove the locking nut 2, and then insert the adjusting rod into the adjustment hole at the corresponding position. In this way, the position of the clamp will also follow the adjustment movement, and the position of the workpiece clamped in the clamp will also be adjusted. After the adjustment is completed, the locking nut 2 is installed on the adjusting rod and the adjustment plate is locked and fixed, which provides convenience for the user's work.

[0015] 3. The utility model arranges the adjusting rod, locking nut 1 and locking nut 2. The adjusting rod can be used to adjust the hobbing depth of the workpiece. The more the adjusting rod moves inward, the more the workpiece extends into the machine, and vice versa. The locking nut 1 and locking nut 2 are used to lock and fix the adjusted adjusting rod to meet the processing requirements of workpieces of different sizes and provide convenience for users.

[0016] 4. The utility model is provided with a fixed frame, a bidirectional threaded rod, a slider, a mounting frame, a hob and a stepper motor. The threads on both sides of the surface of the bidirectional threaded rod are arranged in opposite directions. When the user rotates the bidirectional threaded rod to work, the two sliders on the bidirectional threaded rod will move simultaneously in opposite directions. Conversely, the two sliders will move relative to each other at the same time, and the hob will also move accordingly, thereby expanding and reducing the distance between the two hobs to meet actual work needs. The user rotates the bidirectional threaded rod according to the size of the workpiece, and the bidirectional threaded rod drives the two sliders to move accordingly. The sliders slide in the fixed frame at the same time, so that the fixed frame can limit the movement of the sliders. The slider will drive the mounting frame to move, and the hob and the stepper motor installed on the mounting frame will also move accordingly. Then the workpiece will move between the two hobs, and at the same time, the stepper motor will be turned on and drive the hob to rotate. The two hobs rotate back to back or relative to each other. Under the action of the two hobs, helical teeth or straight teeth are hobbed on the surface of the workpiece, providing convenience for the user's work and use. At the same time, the processing distance between the two hobs can be adjusted according to the size of the workpiece.

[0017] 5. The utility model is provided with a fixed circular plate, a frame, a second positioning pin and a socket. The fixed circular plate is fixed on the bidirectional threaded rod, and a plurality of sockets are provided on the fixed circular plate for inserting the second positioning pin. In this way, after the user rotates the bidirectional threaded rod to adjust the distance between the two hobs, the second positioning pin can be passed through one side of the frame and inserted into the corresponding socket on the fixed circular plate, thereby realizing the positioning of the bidirectional threaded rod and positioning the hob at this position, improving the stability of the hob during operation and providing convenience for the user's work.

[0018] 6. The utility model processes helical teeth and straight teeth on the surface of cylindrical gears through hobbing, and processes the gears using the hobbing machine in this solution. The hobbing machine can simultaneously meet the requirements of helical gear processing and straight gear processing, so that the processed products meet the OE requirements, and at the same time simplify the production process, providing convenience for users' work and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure assembly of the fixed rod;

[0023] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the utility model.

[0024] In the figure: 1. Base, 2. Adjustment guide rail, 3. Limiting slide, 4. Adjustment slider, 5. Locating pin 1, 6. Locating hole, 7. Fixing rod, 8. Adjustment plate, 9. Clamp, 10. Adjustment rod, 11. Locking nut 1, 12. Locking nut 2, 13. Adjustment hole, 14. Fixing frame, 15. Bidirectional threaded rod, 16. Slider, 17. Mounting frame, 18. Hob, 19. Stepper motor, 20. Fixed circular plate, 21. Frame, 22. Locating pin 2, 23. Cylindrical gear. DETAILED DESCRIPTION

[0025] The following is a combination of the appended examples of the present invention Figure 1-4 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Example

[0026] A gear hobbing machine for angle-adjustable gear processing comprises a base 1, an adjusting guide rail 2 is fixedly mounted on one side of the top of the base 1, a limiting slide groove 3 is provided on the outer side of the adjusting guide rail 2, an adjusting slider 4 is slidably mounted inside the limiting slide groove 3, one side of the adjusting guide rail 2 is provided with evenly distributed positioning holes 6, one side of the adjusting slider 4 is fixedly connected to a fixing rod 7, a positioning pin 5 is inserted into the inside of one of the positioning holes 6, one end of the positioning pin 5 is inserted into the inside of the fixing rod 7, an adjusting arm is detachably mounted on the end of the fixing rod 7 away from the adjusting slider 4, and a clamp 9 is fixedly mounted on one end of the adjusting arm.

[0027] The specific usage process is as follows: The working method of the gear hobbing machine is to use a rod-shaped or tube-shaped cylindrical gear hobbing cutter to extrude and shape the surface of the workpiece, which can meet the processing parameter requirements of the product to the greatest extent, simplify the production process, will not generate cutting waste, improve the processing efficiency of the product, eliminate the cleaning steps, and provide convenience for the user's work. When processing the workpiece, first clamp the workpiece in the clamp 9, and then check whether the workpiece is aligned and matched with the two hobs 18. If it does not match, it can be adapted by adjusting the adjustment plate 8. Specifically, multiple adjustment holes 13 are opened on the adjustment plate 8, and the adjustment plate 8 is also used to adjust the processing position of the workpiece. The position of the adjustment plate 8 is moved according to whether the workpiece is aligned and matched with the two hobs 18. , in order to adjust the processing position of the workpiece. When adjusting, you only need to loosen and remove the locking nut 2 12, and then insert the adjusting rod 10 into the adjusting hole 13 at the corresponding position. In this way, the position of the clamp 9 will also move with the adjustment, and the position of the workpiece clamped in the clamp 9 will also be adjusted. After the adjustment is completed, the locking nut 2 12 can be installed on the adjusting rod 10 and the adjusting plate 8 can be locked and fixed, which provides convenience for the user's work. It should be noted that if there is an error in the contact between the workpiece and the hob 18 during the workpiece movement processing, the user can also meet it by adjusting the adjusting rod 10. Specifically, the adjusting rod 10 can be used to adjust the hobbing depth of the workpiece. The more the adjusting rod 10 moves inward, the more the workpiece extends into the machine, and vice versa. The less, the locking nut 11 and the locking nut 2 12 are used to lock and fix the adjusted adjusting rod 10 to meet the processing requirements of workpieces of different sizes and provide convenience for the user's work. Then the workpiece can be moved close to the hob 18 by moving the adjusting guide rail 2 to perform gear hobbing. At this time, straight teeth are processed. If helical teeth need to be processed, the user needs to first pull out the positioning pin 1 5 from the current positioning hole 6. At the same time, the positioning pin 1 5 will also be moved out from the fixing rod 7. Then the user can move the adjusting slider 4 to slide in the limiting slide 3. According to the moving trajectory of the adjusting slider 4, the workpiece and the hob 18 form an angle, which also makes the workpiece tilted with the hob 18, thereby processing helical teeth. It should be noted that the workpiece is tilted when adjusting the inclination. When the bevel angle is set, in order to avoid the situation where the hob 18 is not high enough and cannot adapt to the workpiece, the height of the fixing frame 14 can be increased, or the fixing frame 14 can be designed to be a lifting structure, so that the hob 18 can always adapt to the workpiece. The specific structure is the existing technology and will not be explained in detail in this article. According to the set bevel gear parameters, after the adjusting slider 4 moves to the corresponding angle in the limiting slide groove 3, the positioning pin 5 is inserted back into the positioning hole 6 at the corresponding position, and the positioning pin 5 is also stuck in the fixing rod 7 at the corresponding position. It should be noted that, for convenience, the user can move the adjusting slider 4 by lifting the adjusting rod 10. When the adjusting slider 4 moves, all structures directly or indirectly installed on the adjusting slider 4 will move accordingly.For example, the fixing rod 7, the adjusting plate 8, the clamp 9, the adjusting rod 10, the locking nut 11 and the locking nut 2 12, etc., so that the gear hobbing machine can process straight teeth and helical teeth, meet the processing needs of various gears, achieve the purpose of multi-purpose use of one machine, improve the actual use performance of the gear hobbing machine, improve the market competitiveness of the gear hobbing machine, and provide convenience for users' work. Among them, the threads on both sides of the surface of the two-way threaded rod 15 are arranged in relative directions. When the user rotates the two-way threaded rod 15 to work, the two sliders 16 on the two-way threaded rod 15 will move in opposite directions at the same time. Conversely, the two sliders 16 will move relative to each other at the same time, and the hob 18 will also move with it, thereby realizing the expansion and contraction of the distance between the two hobs 18, meeting actual work needs, and users can adjust the distance according to the workpiece. The size of the workpiece is determined by rotating the bidirectional threaded rod 15. The bidirectional threaded rod 15 drives the two sliders 16 to move accordingly. The sliders 16 slide in the fixed frame 14 at the same time. In this way, the fixed frame 14 can limit the movement of the slider 16. The slider 16 will drive the mounting frame 17 to move, and the hob 18 and the stepper motor 19 installed on the mounting frame 17 will also move accordingly. Then the workpiece will move between the two hobs 18. At the same time, the stepper motor 19 is turned on and drives the hob 18 to rotate. The two hobs 18 rotate back to back or relative to each other. Under the action of the two hobs 18, helical teeth or straight teeth are hobbed on the surface of the workpiece, which provides convenience for the user's work and can also adjust the processing distance between the two hobs 18 according to the size of the workpiece.

[0028] Therefore, a structural design that can adjust the orientation angle of the workpiece is adopted. The angle of the workpiece can be adjusted according to the processing requirements, so that the workpiece and the hob form an angle. When the hob is statically fixed, helical teeth can be processed on the workpiece. Users can flexibly choose straight tooth processing or helical tooth processing on this machine according to processing requirements, realizing multiple uses of one machine, improving the processing efficiency of the workpiece, and providing convenience for users' work.

[0029] The adjusting arm includes an adjusting plate 8 fixedly connected to the clamp 9 , and a plurality of adjusting holes 13 are formed on one side of the adjusting plate 8 .

[0030] Specifically, the setting of the adjustment plate 8 and the adjustment hole 13, multiple adjustment holes 13 are opened on the adjustment plate 8, and the adjustment plate 8 is also used to adjust the processing position of the workpiece. According to whether the workpiece is aligned with the two hobs 18, the position of the adjustment plate 8 is moved to adjust the processing position of the workpiece. When adjusting, only the locking nut 2 12 needs to be loosened and removed, and then the adjusting rod 10 is inserted into the adjustment hole 13 at the corresponding position. In this way, the position of the clamp 9 will also follow the adjustment movement, and the position of the workpiece clamped in the clamp 9 will also be adjusted. After the adjustment is completed, the locking nut 2 12 is installed on the adjusting rod 10 and the adjustment plate 8 is locked and fixed, which provides convenience for the user's work.

[0031] An adjusting rod 10 is inserted into one of the adjusting holes 13 , and one end of the adjusting rod 10 passes through the fixing rod 7 to the outside of the adjusting slider 4 .

[0032] The surface of the adjusting rod 10 is threadedly mounted with a locking nut 11 and a locking nut 2 12 , and the locking nut 11 and the locking nut 2 12 are respectively located on both sides of the adjusting plate 8 .

[0033] Specifically, the setting of the adjusting rod 10, the locking nut 11 and the locking nut 2 12, the adjusting rod 10 can be used to adjust the hobbing depth of the workpiece. The adjusting rod 10 moves inward for adjustment, and the workpiece extends more into the machine, and vice versa. The locking nut 11 and the locking nut 2 12 are used to lock and fix the adjusted adjusting rod 10 to meet the processing requirements of workpieces of different sizes and provide convenience for users' work.

[0034] A fixing frame 14 is fixedly installed on one side of the base 1, and a bidirectional threaded rod 15 is rotatably installed on the inner side of the fixing frame 14. Sliders 16 that slide in the fixing frame 14 are threadedly installed on both sides of the surface of the bidirectional threaded rod 15. A mounting frame 17 is fixedly installed on the top of the slider 16. A stepping motor 19 is fixedly installed on one side of the mounting frame 17. The output shaft of the stepping motor 19 passes through the interior of the mounting frame 17 and is fixedly installed with a hob 18.

[0035] Specifically, the setting of the fixing frame 14, the bidirectional threaded rod 15, the slider 16, the mounting frame 17, the hob 18 and the stepping motor 19, the threads on both sides of the surface of the bidirectional threaded rod 15 are set in opposite directions, so that when the user rotates the bidirectional threaded rod 15 to work, the two sliders 16 on the bidirectional threaded rod 15 will move simultaneously in opposite directions, and conversely, the two sliders 16 will move relative to each other at the same time, and the hob 18 will also move with it, thereby realizing the expansion and contraction of the distance between the two hobs 18 to meet actual work needs. The user rotates the bidirectional threaded rod 15 according to the size of the workpiece, and the bidirectional threaded rod 15 drives the two sliders 16 to move accordingly, and the sliders 16 slides in the fixed frame 14 at the same time, so that the fixed frame 14 can limit the movement of the slider 16, and the slider 16 will drive the mounting frame 17 to move, so the hob 18 and the stepper motor 19 installed on the mounting frame 17 will also move accordingly, and then the workpiece will move between the two hobs 18, and at the same time, the stepper motor 19 will be turned on to work and drive the hob 18 to rotate, and the two hobs 18 will rotate back to back or relative to each other. Under the action of the two hobs 18, helical teeth or straight teeth are hobbed on the surface of the workpiece, which provides convenience for the user's work and use, and the processing spacing between the two hobs 18 can also be adjusted according to the size of the workpiece.

[0036] One end of the surface of the bidirectional threaded rod 15 is fixedly connected to a fixed circular plate 20 located on the outside of the fixed frame 14. A frame 21 fixedly connected to one side of the fixed frame 14 is provided on the outside of the fixed circular plate 20. A second positioning pin 22 is provided on one side of the frame 21. One end of the second positioning pin 22 is inserted into the interior of the fixed circular plate 20. A plurality of sockets compatible with the second positioning pin 22 are provided on the surface of the fixed circular plate 20.

[0037] Specifically, the setting of the fixed circular plate 20, the frame 21, the positioning pin 22 and the socket is that the fixed circular plate 20 is fixed on the bidirectional threaded rod 15, and a plurality of sockets are provided on the fixed circular plate 20 for inserting the positioning pin 22. In this way, after the user rotates the bidirectional threaded rod 15 to adjust the distance between the two hobs 18, the positioning pin 22 can be passed through one side of the frame 21 and inserted into the corresponding socket on the fixed circular plate 20, thereby realizing the positioning of the bidirectional threaded rod 15 and positioning the hob 18 at this position, thereby improving the stability of the hob 18 during operation and providing convenience for the user's work.

[0038] A gear, wherein the interior of the holder 9 holds a cylindrical gear 23, the surface of the cylindrical gear 23 is hobbed with helical teeth, and one end of the surface of the cylindrical gear 23 is hobbed with straight teeth.

[0039] Specifically, the surface hobbing of the cylindrical gear includes helical teeth and straight teeth, and is processed using the hobbing machine in this solution. The hobbing machine can simultaneously meet the needs of helical tooth processing and straight tooth processing, so that the processed product meets the OE requirements, while simplifying the production process and providing convenience for users' work.

[0040] It should be noted that the functions to be implemented by each hardware in the present invention are supported by a large number of mature technologies and belong to the existing technology. The essence of the present invention lies in optimizing the combination of existing hardware and its connection methods for specific application scenarios to meet the adaptation needs in specific application scenarios and solve the problems raised in the background technology (not involving improvements to the software inside the hardware).

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An angle-adjustable gear hobbing machine, comprising a base (1), characterized in that: An adjusting guide rail (2) is fixedly installed on one side of the top of the base (1), a limiting slide groove (3) is provided on the outer side of the adjusting guide rail (2), an adjusting slider (4) is slidably installed inside the limiting slide groove (3), and evenly distributed positioning holes (6) are provided on one side of the adjusting guide rail (2). A fixing rod (7) is fixedly connected to one side of the adjusting slider (4), a positioning pin (5) is inserted into the interior of one of the positioning holes (6), and one end of the positioning pin (5) is inserted into the interior of the fixing rod (7). An adjusting arm is detachably installed on the end of the fixing rod (7) away from the adjusting slider (4), and a clamp (9) is fixedly installed on one end of the adjusting arm.

2. The angle-adjustable gear hobbing machine according to claim 1, characterized in that: The adjustment arm comprises an adjustment plate (8) fixedly connected to the clamp (9), and a plurality of adjustment holes (13) are provided on one side of the adjustment plate (8).

3. The angle-adjustable gear hobbing machine according to claim 2, characterized in that: An adjusting rod (10) is inserted into one of the adjusting holes (13), and one end of the adjusting rod (10) passes through the fixing rod (7) and extends to the outside of the adjusting slider (4).

4. The angle-adjustable gear hobbing machine according to claim 3, characterized in that: The surface of the adjusting rod (10) is threadedly mounted with a locking nut 1 (11) and a locking nut 2 (12), and the locking nut 1 (11) and the locking nut 2 (12) are respectively located on both sides of the adjusting plate (8).

5. The angle-adjustable gear hobbing machine according to claim 4, characterized in that: A fixing frame (14) is fixedly mounted on one side of the base (1), a bidirectional threaded rod (15) is rotatably mounted on the inner side of the fixing frame (14), a slider (16) that slides in the fixing frame (14) is threadedly mounted on both sides of the surface of the bidirectional threaded rod (15), a mounting frame (17) is fixedly mounted on the top of the slider (16), a stepping motor (19) is fixedly mounted on one side of the mounting frame (17), an output shaft of the stepping motor (19) passes through the interior of the mounting frame (17) and is fixedly mounted with a hob (18).

6. The angle-adjustable gear hobbing machine according to claim 5, characterized in that: One end of the surface of the bidirectional threaded rod (15) is fixedly connected to a fixed circular plate (20) located outside the fixing frame (14), and a frame (21) fixedly connected to one side of the fixing frame (14) is provided on the outside of the fixing circular plate (20), and a positioning pin 2 (22) is provided through one side of the frame (21), and one end of the positioning pin 2 (22) is inserted into the interior of the fixing circular plate (20), and a plurality of sockets compatible with the positioning pin 2 (22) are provided on the surface of the fixing circular plate (20).

7. A gear machined by the angle-adjustable gear hobbing machine according to any one of claims 1 to 6, characterized in that: The inside of the clamp (9) holds a cylindrical gear (23), the surface of the cylindrical gear (23) is hobbed with helical teeth, and one end of the surface of the cylindrical gear (23) is hobbed with straight teeth.

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