Fixing clamp for gear machining

Abstract

The invention discloses a fixing clamp for gear machining, and relates to the technical field of universal part machining, the fixing clamp comprises a base, the top of the base is fixedly connected with a clamping seat, one side of the clamping seat is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, and the outer wall of the rotating shaft is rotatably connected with the inner wall of the clamping seat; a second clamping plate is fixedly connected to one end of the rotating shaft, an electric telescopic rod is rotatably connected to the side, away from the rotating shaft, of the outer wall of the clamping base, a first clamping plate is fixedly connected to one end of the electric telescopic rod, and a clamping mechanism is arranged on the outer wall of the second clamping plate. And at the moment, the connecting block can automatically extend, the clamping range of the metal column is expanded during clamping, the clamping stability of the metal column is guaranteed, shaking generated by cutting during rotation is reduced, when clamping is not carried out, automatic retraction is carried out, and enough operation space is provided for a worker to place and take the metal column.

Description

Technical Field

[0001] The invention relates to the technical field of universal parts processing, in particular to a fixing fixture for gear processing. Background Art

[0002] Gears are mechanical components with teeth on the wheel rim that can continuously mesh to transmit motion and power. The application of gears in transmission has appeared very early. At the end of the 19th century, the principle of gear cutting and the special machine tools and tools that use this principle to cut gears appeared one after another. With the development of production, the stability of gear operation has received attention; A fixing fixture for gear processing described in the patent application with announcement number CN208099507U relates to the technical field of general parts processing, which comprises a fixed base, a support frame is fixedly connected to the bottom of the fixed base, and a support plate is fixedly connected to the top of the fixed base, a buffer groove is arranged inside the fixed base, and a fixed head is arranged on the top of the buffer groove, the top of the fixed head is a fixed body, and a connecting block is fixedly connected to the top of the fixed body, a fixing groove is arranged on the outside of the fixed body, and an active card is movably connected to the outside, a movable block is fixedly connected to the outside of the movable card, and an auxiliary card is fixedly connected to the bottom of the movable block, a limiting plate is arranged on the top of the movable block, a telescopic rod is fixedly connected to the top of the connecting block, and a high-pressure air pump is fixedly connected to the top of the telescopic rod; Currently, when cutting and processing a metal column to form a gear column, the metal column needs to be clamped and the cutting and cutting of the metal column is completed by rotation. When the metal column is rotationally cut, a metal column with a smaller diameter is prone to skew, loss of center position and deformation due to the smaller clamping area on both sides and the lighter weight when being rotated and cut. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a fixing fixture for gear processing, which achieves the purpose of solving the above-mentioned problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fixing fixture for gear processing, comprising a base, a clamping seat fixedly connected to the top of the base, a motor fixedly connected to one side of the clamping seat, a rotating shaft fixedly connected to the output end of the motor, an outer wall of the rotating shaft rotatably connected to an inner wall of the clamping seat, a second clamping plate fixedly connected to one end of the rotating shaft, an electric telescopic rod rotatably connected to the side of the outer wall of the clamping seat away from the rotating shaft, a first clamping plate fixedly connected to one end of the electric telescopic rod, and a clamping mechanism provided on the outer wall of the second clamping plate; The clamping mechanism comprises: A slide groove, the slide groove is a strip-shaped groove, the slide groove is opened on one side of the second clamping plate, the inner wall of the second clamping plate is provided with a groove, the inner wall of the groove is fixedly connected with a blade, the blade is an inclined plate-shaped structure, the outer wall of the slide groove is slidably connected with a clamping block, and the slide groove is used to play a role in allowing the clamping block to slide along its trajectory; The sliding sleeve is a frame-like structure, the inner wall of the sliding sleeve is slidably connected to the outer wall of the clamping block, one side of the sliding sleeve is fixedly connected to a connecting block, a first telescopic rod is arranged between the two clamping blocks, and the sliding sleeve is used to slide on the outer wall of the clamping block.

[0005] Preferably, the outer wall of the sliding sleeve is fixedly connected to a second connecting plate, the outer wall of the second connecting plate is fixedly connected to the first connecting plate, the outer wall of the first connecting plate is fixedly connected to one end of the first telescopic rod, and the other end of the first telescopic rod is fixedly connected to the outer wall of another first connecting plate.

[0006] Preferably, the outer wall of the second clamping plate is fixedly connected to a fixing block, the outer wall of the sliding sleeve is fixedly connected to a connecting shaft, and the connecting shaft passes through the inner wall of the fixing block and is slidably connected to the inner wall of the fixing block.

[0007] Preferably, one end of the connecting shaft is fixedly connected to a fixing plate, one side of the fixing plate is fixedly connected to a first telescopic sleeve, and one end of the first telescopic sleeve is fixedly connected to one side of a fixing block.

[0008] Preferably, a connecting hole is formed on the outer wall of the connecting shaft, the interior of the connecting hole is connected to the interior of the clamping block, and a second telescopic sleeve is fixedly connected to one side of the clamping block.

[0009] Preferably, the interior of the clamping block is connected to the interior of the second telescopic sleeve, hydraulic oil is provided inside the first telescopic sleeve and the second telescopic sleeve, an auxiliary clamping mechanism is provided on the outer wall of the sliding sleeve, the auxiliary clamping mechanism includes a rotating rod, the outer wall of the rotating rod is rotatably connected to the outer wall of the clamping block, the outer wall of the rotating rod is fixedly connected to a connecting strip, and the outer wall of the connecting strip is fixedly connected to an opening and closing plate.

[0010] Preferably, a rubber pad is fixedly connected to the outer wall of the opening and closing plate, a first rotating ball is rotatably connected to one side of the opening and closing plate, and a second telescopic rod is fixedly connected to the outer wall of the first rotating ball.

[0011] Preferably, the second rotating ball is rotatably connected to the outer wall of the clamping block, a built-in spring is provided inside the second telescopic rod, and the second rotating ball is fixedly connected to one end of the second telescopic rod.

[0012] The present invention provides a fixing fixture for gear machining, which has the following beneficial effects: 1. The present invention sets a clamping mechanism so that the sliding sleeve and the connecting block automatically extend and move away from the clamping block, so that when the clamping block and the metal column are tightly clamped, the connecting block also synchronously completes the clamping of the metal column. At this time, the connecting block automatically extends, so that when clamping, the clamping range of the metal column is expanded, the stability of the clamping of the metal column is ensured, and the shaking caused by cutting during rotation is reduced. When not clamped, the connecting block automatically retracts, giving the staff enough operating space to place and take the metal column.

[0013] 2. The present invention provides a clamping mechanism to prevent the problem of vibration displacement of the center position during processing when a metal column with a smaller diameter is rotationally cut due to the smaller clamping area at both ends. A larger clamping area is used to stabilize the rotational cutting process of the metal column and maintain its stable rotational cutting. When a metal column with a larger diameter is clamped, the distance that the connecting block slides from the outer wall of the clamping block is smaller, and there will not be too much coverage of the outer wall of the metal column, thereby maintaining more operational convenience and a tooth opening range thereon, and reducing the deformation damage problem of the outer wall of the metal column caused by a larger clamping range. It automatically adapts to different situations to ensure efficient and stable work.

[0014] 3. The present invention sets a clamping mechanism, and when the second clamping plate rotates, the blades in the groove on the inner wall of the second clamping plate are driven to rotate together. The rotation of the blades is used to fan the air, so that the air flows from left to right. In the process of the metal column being driven to rotate and cut, the flow of air is used to carry away the debris generated by the surface cutting, thereby avoiding the problem of residues adhering to the metal column.

[0015] 4. The present invention increases the clamping area and range of metal columns with smaller diameters by providing an auxiliary clamping mechanism, thereby improving the clamping stability of metal columns with smaller diameters and avoiding the problem of unstable offset of metal columns with smaller diameters during clamping and cutting. When clamping metal columns of the same larger size, the rubber pad will not be pushed to the outer wall of the metal column, thereby minimizing the deformation and scratches on the outer wall of the metal column caused by clamping without requiring a larger clamping range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the second clamping plate of the present invention; Figure 3 The structure diagram of the clamping mechanism of the present invention is shown in FIG. Figure 1 ; Figure 4 For the present invention Figure 3 A magnified image of point A; Figure 5 The structure of the clamping mechanism of the present invention is shown in FIG. Figure 2 ; Figure 6 The structure of the clamping mechanism of the present invention is shown in FIG. Figure 3 ; Figure 7 The motion state of the clamping mechanism of the present invention is shown in FIG. Figure 1 ; Figure 8 The motion state of the clamping mechanism of the present invention is shown in FIG. Figure 2 ; Fig. 9 The motion state of the clamping mechanism of the present invention is shown in FIG. Figure 3 ; Fig.10 The motion state of the clamping mechanism of the present invention is shown in FIG. Figure 4 ; Fig.11 The motion state of the clamping mechanism of the present invention is shown in FIG. Figure 5 ; Fig.12 The disassembled structure of the auxiliary clamping mechanism of the present invention is shown in FIG. Figure 1 ; Fig.13 The disassembled structure of the auxiliary clamping mechanism of the present invention is shown in FIG. Figure 2 ; Fig.14 It is a structural schematic diagram of the auxiliary clamping mechanism of the present invention; Fig.15 The motion state diagram of the auxiliary clamping mechanism of the present invention is shown in FIG. Figure 1 ; Fig.16 The motion state diagram of the auxiliary clamping mechanism of the present invention is shown in FIG. Figure 2 .

[0017] In the figure: 1 clamping seat, 2 base, 3 clamping mechanism, 301 slide groove, 302 groove, 303 blade, 304 first telescopic rod, 305 first connecting plate, 306 second connecting plate, 307 sliding sleeve, 308 connecting block, 309 clamping block, 310 fixed block, 312 fixed plate, 313 first telescopic sleeve, 314 connecting shaft, 315 second telescopic sleeve, 316 connecting hole, 4 auxiliary clamping mechanism, 401 first rotating ball, 402 second telescopic rod, 403 second rotating ball, 405 opening and closing plate, 406 connecting strip, 407 rotating rod, 408 rubber pad, 5 motor, 6 metal column, 7 first clamping plate, 8 electric telescopic rod, 9 rotating shaft, 10 second clamping plate. DETAILED DESCRIPTION

[0018] Example 1: Please refer to Figure 1-4The present invention provides a technical solution: a fixing fixture for gear processing, comprising a base 2, a clamping seat 1 is fixedly connected to the top of the base 2, a motor 5 is fixedly connected to one side of the clamping seat 1, a rotating shaft 9 is fixedly connected to the output end of the motor 5, an outer wall of the rotating shaft 9 is rotatably connected to the inner wall of the clamping seat 1, one end of the rotating shaft 9 is fixedly connected to a second clamping plate 10, an outer wall of the clamping seat 1 away from the rotating shaft 9 is rotatably connected to an electric telescopic rod 8, one end of the electric telescopic rod 8 is fixedly connected to a first clamping plate 7, and a clamping mechanism 3 is arranged on the outer wall of the second clamping plate 10; The clamping mechanism 3 comprises: The slide groove 301 is a strip-shaped groove. The slide groove 301 is provided on one side of the second clamping plate 10. The inner wall of the second clamping plate 10 is provided with a groove 302. The inner wall of the groove 302 is fixedly connected with a blade 303. The blade 303 is an inclined plate-shaped structure. The outer wall of the slide groove 301 is slidably connected with a clamping block 309. The slide groove 301 is used to play the role of allowing the clamping block 309 to slide along its trajectory. The sliding sleeve 307 is a frame-shaped structure, the inner wall of the sliding sleeve 307 is slidably connected to the outer wall of the clamping block 309, a connecting block 308 is fixedly connected to one side of the sliding sleeve 307, a first telescopic rod 304 is arranged between the two clamping blocks 309, and the sliding sleeve 307 is used to slide on the outer wall of the clamping block 309; when in use, the metal column 6 to be processed and toothed is placed between the second clamping plate 10 and the first clamping plate 7, and then the electric telescopic rod 8 is started to push the first clamping plate 7 to clamp the metal column 6, and then the motor 5 is started to control the rotating shaft 9 to drive the second clamping plate 10 to rotate, and when the second clamping plate 10 rotates, it drives the metal column 6 to rotate, so that the cutting and toothing of the metal column 6 is completed through external mechanical processing; Example 2: Please refer to Figure 1-11 On the basis of the first embodiment, the present invention provides a technical solution: the outer wall of the sliding sleeve 307 is fixedly connected with the second connecting plate 306, the outer wall of the second connecting plate 306 is fixedly connected with the first connecting plate 305, the outer wall of the first connecting plate 305 is fixedly connected with one end of the first telescopic rod 304, and the other end of the first telescopic rod 304 is fixedly connected with the outer wall of another first connecting plate 305.

[0019] The outer wall of the second clamping plate 10 is fixedly connected to a fixing block 310 , the outer wall of the sliding sleeve 307 is fixedly connected to a connecting shaft 314 , and the connecting shaft 314 penetrates through the inner wall of the fixing block 310 and is slidably connected to the inner wall of the fixing block 310 .

[0020] One end of the connecting shaft 314 is fixedly connected to the fixing plate 312 , one side of the fixing plate 312 is fixedly connected to the first telescopic sleeve 313 , and one end of the first telescopic sleeve 313 is fixedly connected to one side of the fixing block 310 .

[0021] A connecting hole 316 is provided on the outer wall of the connecting shaft 314, and the interior of the connecting hole 316 is connected to the interior of the clamping block 309, and a second telescopic sleeve 315 is fixedly connected to one side of the clamping block 309; and when the first clamping plate 7 is pushed by the electric telescopic rod 8 to complete the clamping of the metal column 6, the metal column 6 is first slightly clamped, and then the five first telescopic rods 304 on the second clamping plate 10 are started, and the five first telescopic rods 304 are synchronously contracted, and then when the five first telescopic rods 304 are contracted at the same time, the first connecting plates 305 at both ends of the first telescopic rods 304 are pulled, so that the first connecting plates 305 at both ends drive the second connecting plates 306 and the sliding sleeve 307 to approach each other synchronously. , and the sliding sleeves 307 on both sides will drive the clamping blocks 309 on the inner wall to slide along the sliding grooves 301 on the second clamping plate 10 when being pulled, and move toward the center of the second clamping plate 10 until the concave surfaces of the five clamping blocks 309 abut against the outer wall of the clamped metal column 6 at the center of the second clamping plate 10, and if the metal column 6 is not in the center, the five clamping blocks 309 will move synchronously to push the metal column 6 to the middle of the second clamping plate 10 and the first clamping plate 7, thereby completing the stable center clamping of the metal column 6. When the center clamping is ensured, the electric telescopic rod 8 is started again to push the first clamping plate 7 to tighten and clamp the metal column 6; When the clamping block 309 slides through the sliding groove 301 on the outer wall of the second clamping plate 10, the clamping block 309 will pull the connecting shaft 314, and the connecting shaft 314 will drive the fixed plate 312 to move synchronously. The connecting shaft 314 passes through the inside of the first telescopic sleeve 313 and is fixedly connected to the fixed plate 312. Therefore, when the connecting shaft 314 is moved by the clamping block 309, it will push the first telescopic sleeve 313 through the fixed plate 312, and one end of the first telescopic sleeve 313 is fixed by the fixed block 310. Therefore, at this time, the fixed plate 312 will push the first telescopic sleeve 313 to approach the fixed block 310, and squeeze the first telescopic sleeve 313 to make the first telescopic sleeve 313 contract, and the hydraulic oil inside the first telescopic sleeve 313 enters the connecting hole 316 in the connecting shaft 314, and the connecting hole 316 enters the clamping block 30 9, and then enters the second telescopic sleeve 315 through the clamping block 309, the hydraulic oil in the second telescopic sleeve 315 increases, thereby pushing and stretching the second telescopic sleeve 315, and then pushing the connecting block 308, the connecting block 308 is pushed to drive the sliding sleeve 307 to slide on the outer wall of the clamping block 309, so that the sliding sleeve 307 and the connecting block 308 are automatically extended at this time, away from the clamping block 309, so that when the clamping block 309 and the metal column 6 are tightly clamped, the connecting block 308 also synchronously completes the clamping of the metal column 6, and at this time the connecting block 308 automatically extends, so that when clamping, the clamping range of the metal column 6 is expanded, the stability of the clamping of the metal column 6 is ensured, and the shaking caused by cutting during rotation is reduced, and when not clamped, it is automatically retracted, giving the staff enough operating space to place and take the metal column 6; And the smaller the diameter of the metal column 6 is, the farther the clamping block 309 slides to the metal column 6 for clamping, so that the fixed plate 312 presses the first telescopic sleeve 313 more, and the more hydraulic oil in the first telescopic sleeve 313 enters the second telescopic sleeve 315 through the clamping block 309. The smaller the diameter of the metal column 6 is, the farther the connecting block 308 slides from the outer wall of the clamping block 309, and the larger the range of clamping of the outer wall of the metal column 6 by the connecting block 308 and the clamping block 309 is, so that when the diameter of the metal column 6 is very small, its larger clamping area can be used to avoid the metal column 6 with a smaller diameter from being cut during rotation. Since the clamped areas at both ends are also small, the center position is prone to vibration offset during processing, so a larger clamping area is used to stabilize the rotary cutting processing of the metal column 6 and maintain its stable rotary cutting work. When the metal column 6 with a larger diameter is clamped, the distance that the connecting block 308 slides from the outer wall of the clamping block 309 is small, and there will not be too much coverage of the outer wall of the metal column 6, thereby maintaining more operational convenience and the tooth opening range thereon, and reducing the deformation damage problem caused by the larger clamping range to the outer wall of the metal column 6, and automatically adaptively adjusting according to different situations to ensure efficient and stable work; At the same time, when the second clamping plate 10 rotates, the blades 303 in the groove 302 on the inner wall of the second clamping plate 10 are driven to rotate together, and the rotation of the blades 303 is used to fan the air, so that the air flows from left to right, so that when the metal column 6 is driven to rotate and cut, the debris generated by the surface cutting is taken away by the flow of air, thereby avoiding the problem of residues adhering to the metal column 6; Example 3: Please refer to Figure 1-15 On the basis of the first and second embodiments, the present invention provides a technical solution: the interior of the clamping block 309 is connected to the interior of the second telescopic sleeve 315, hydraulic oil is arranged inside the first telescopic sleeve 313 and the second telescopic sleeve 315, an auxiliary clamping mechanism 4 is arranged on the outer wall of the sliding sleeve 307, the auxiliary clamping mechanism 4 includes a rotating rod 407, the outer wall of the rotating rod 407 is rotatably connected to the outer wall of the clamping block 309, the outer wall of the rotating rod 407 is fixedly connected to a connecting strip 406, and the outer wall of the connecting strip 406 is fixedly connected to an opening and closing plate 405.

[0022] A rubber pad 408 is fixedly connected to the outer wall of the opening and closing plate 405 , a first rotating ball 401 is rotatably connected to one side of the opening and closing plate 405 , and a second telescopic rod 402 is fixedly connected to the outer wall of the first rotating ball 401 .

[0023] The second rotating ball 403 is rotatably connected to the outer wall of the clamping block 309, a built-in spring is arranged inside the second telescopic rod 402, and one end of the second telescopic rod 402 is fixedly connected to the second rotating ball 403; When the connecting block 308 slides with the sliding sleeve 307, when the sliding sleeve 307 slides away from the clamping block 309, the first rotating ball 401 on one side of the opening and closing plate 405 pushes the second telescopic rod 402, and the second rotating ball 403 at one end of the second telescopic rod 402 is stationary on the clamping block 309, so that when the sliding sleeve 307 drives the opening and closing plate 405 away from the clamping block 309 through the rotating rod 407, the first connecting plate 305 is moved by the first rotating ball 401. When the second telescopic rod 402 moves to the right and is lifted up by the second telescopic rod 402, the opening and closing plate 405 drives the rotating rod 407 to rotate and open, so that the opening and closing plate 405 is turned over, and the rubber pad 408 on the outer wall is used to squeeze the surface of the metal column 6. When the rubber pad 408 is in contact with the surface of the metal column 6, the second telescopic rod 402 continues to push the opening and closing plate 405 until the rubber pad 408 is against the metal column 6. At this time, the built-in spring inside the second telescopic rod 402 will be squeezed and deformed, thereby The second telescopic rod 402 completes the automatic contraction movement and keeps the rubber pad 408 tightly against the surface of the metal column 6. When the diameter of the metal column 6 is small, since the connecting block 308 and the sliding sleeve 307 move a long distance on the outer wall of the clamping block 309, the second telescopic rod 402 can completely lift the opening and closing plate 405 to drive the rotating rod 407 to rotate and open, and use the rubber pad 408 to complete the extrusion and clamping work on the surface of the metal column 6, thereby increasing the clamping area and range of the metal column 6 with a smaller diameter, improving the clamping stability of the metal column 6 with a smaller diameter, and avoiding the problem of offset instability of the metal column 6 with a smaller diameter during clamping and cutting. When the metal column 6 of the same larger size is clamped, the rubber pad 408 will not be pushed to the outer wall of the metal column 6, so that the deformation and scratches caused by clamping the outer wall of the metal column 6 can be reduced as much as possible without requiring a larger clamping range for clamping.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixing fixture for gear processing, comprising a base (2), a clamping seat (1) fixedly connected to the top of the base (2), a motor (5) fixedly connected to one side of the clamping seat (1), a rotating shaft (9) fixedly connected to the output end of the motor (5), an outer wall of the rotating shaft (9) rotatably connected to the inner wall of the clamping seat (1), one end of the rotating shaft (9) fixedly connected to a second clamping plate (10), a side of the outer wall of the clamping seat (1) away from the rotating shaft (9) rotatably connected to an electric telescopic rod (8), one end of the electric telescopic rod (8) fixedly connected to a first clamping plate (7), characterized in that: The outer wall of the second clamping plate (10) is provided with a clamping mechanism (3); The clamping mechanism (3) comprises: A slide groove (301), wherein the slide groove (301) is a strip-shaped groove, and the slide groove (301) is provided on one side of the second clamping plate (10). The inner wall of the second clamping plate (10) is provided with a groove (302), and a blade (303) is fixedly connected to the inner wall of the groove (302), and the blade (303) is an inclined plate-shaped structure. The outer wall of the slide groove (301) is slidably connected to a clamping block (309), and the slide groove (301) is used to enable the clamping block (309) to slide along its trajectory; The sliding sleeve (307) is a frame-shaped structure, the inner wall of the sliding sleeve (307) is slidably connected to the outer wall of the clamping block (309), one side of the sliding sleeve (307) is fixedly connected to a connecting block (308), a first telescopic rod (304) is provided between the two clamping blocks (309), and the sliding sleeve (307) is used to slide on the outer wall of the clamping block (309).

2. A fixing fixture for gear machining according to claim 1, characterized in that: The outer wall of the sliding sleeve (307) is fixedly connected to a second connecting plate (306), the outer wall of the second connecting plate (306) is fixedly connected to a first connecting plate (305), the outer wall of the first connecting plate (305) is fixedly connected to one end of a first telescopic rod (304), and the other end of the first telescopic rod (304) is fixedly connected to the outer wall of another first connecting plate (305).

3. A fixing fixture for gear machining according to claim 2, characterized in that: The outer wall of the second clamping plate (10) is fixedly connected to a fixing block (310), the outer wall of the sliding sleeve (307) is fixedly connected to a connecting shaft (314), and the connecting shaft (314) passes through the inner wall of the fixing block (310) and is slidably connected to the inner wall of the fixing block (310).

4. A fixing fixture for gear machining according to claim 3, characterized in that: One end of the connecting shaft (314) is fixedly connected to a fixing plate (312), one side of the fixing plate (312) is fixedly connected to a first telescopic sleeve (313), and one end of the first telescopic sleeve (313) is fixedly connected to one side of a fixing block (310).

5. A fixing fixture for gear machining according to claim 4, characterized in that: The outer wall of the connecting shaft (314) is provided with a communicating hole (316), the interior of the communicating hole (316) is communicated with the interior of the clamping block (309), and a second telescopic sleeve (315) is fixedly connected to one side of the clamping block (309).

6. A fixing fixture for gear machining according to claim 5, characterized in that: The interior of the clamping block (309) is communicated with the interior of the second telescopic sleeve (315); hydraulic oil is provided inside the first telescopic sleeve (313) and the second telescopic sleeve (315); an auxiliary clamping mechanism (4) is provided on the outer wall of the sliding sleeve (307); the auxiliary clamping mechanism (4) comprises a rotating rod (407); the outer wall of the rotating rod (407) is rotatably connected to the outer wall of the clamping block (309); the outer wall of the rotating rod (407) is fixedly connected to a connecting strip (406); and the outer wall of the connecting strip (406) is fixedly connected to an opening and closing plate (405).

7. A fixing fixture for gear machining according to claim 6, characterized in that: The outer wall of the opening and closing plate (405) is fixedly connected to a rubber pad (408), one side of the opening and closing plate (405) is rotatably connected to a first rotating ball (401), and the outer wall of the first rotating ball (401) is fixedly connected to a second telescopic rod (402).

8. A fixing fixture for gear machining according to claim 7, characterized in that: The second rotating ball (403) is rotatably connected to the outer wall of the clamping block (309); a built-in spring is arranged inside the second telescopic rod (402); and one end of the second telescopic rod (402) is fixedly connected to the second rotating ball (403).

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