CN213496975U

CN213496975U - Clamping device of numerical control gear hobbing machine

Info

Publication number: CN213496975U
Application number: CN202022529820.3U
Authority: CN
Inventors: 李敏
Original assignee: Changzhou Xinheli Precision Machinery Co ltd
Current assignee: Changzhou Xinheli Precision Machinery Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-06-22
Anticipated expiration: 2030-11-04

Abstract

The application relates to a clamping device of a numerical control gear hobbing machine, which comprises a horizontally arranged base, a support frame fixed on the base, a workbench fixed on the base, a fixing component for fixing a machined gear, a positioning component for positioning the axis of the machined gear, and a second driving component for driving the positioning component to move in the vertical direction; the fixed subassembly including rotate install in carousel on the workstation, encircle the axis setting of carousel and with a plurality of stripper plates of carousel sliding fit, locating component including set up in on the support frame and with the support frame sliding fit's location awl in the vertical direction, the pointed end of location awl with the axis coincidence of carousel. This application has the axle center skew of effectively avoiding processing the gear, guarantees the effect of gear machining precision.

Description

Clamping device of numerical control gear hobbing machine

Technical Field

The application relates to the field of numerical control gear hobbing, in particular to a clamping device of a numerical control gear hobbing machine.

Background

The numerical control gear hobbing machine is suitable for batch, small batch and single piece production and processing of cylindrical gears and worm gears, 6 teeth with the length less than 300 and short spline shafts with the length more than 6 teeth can be continuously subjected to indexing hobbing by a spline hobbing cutter for the drum gears with certain parameters, and a chain wheel can be subjected to hobbing by the sprocket hobbing cutter. When the cylindrical gear is processed, the reverse milling and the forward milling hobbing can be adopted, and the full tooth width is processed by adopting an axial feeding (vertical feeding) method.

Among the correlation technique, chinese utility model patent that publication number is CN210359630U discloses a numerical control gear hobbing machine, comprising a base plate, the last fixed surface of bottom plate installs gear fixing mechanism, gear fixing mechanism includes motor, concave circle and fixed axle, the equal fixed connection of motor and fixed axle is at the upper surface of bottom plate, the central part at the bottom plate is seted up to concave circle, the bottom plate rotates through concave circle and is connected with the carousel, the lateral surface fixedly connected with tooth of carousel, the output shaft fixedly connected with gear of motor, the gear is connected with the tooth meshing, the axostylus axostyle of fixed axle rotates through the bearing cooperation and is connected with the linking arm, the lateral surface of linking arm has cup jointed the cover block, the cover block articulates the upper surface at the carousel, four support compression columns of last fixed surface fixedly connected with of fixed axle one end are kept away from to the linking arm. The four pressing columns extrude the inner side face of the machined gear, so that the machined gear is fixed.

In view of the above-mentioned related technologies, the inventor believes that the axis of the machined gear cannot be positioned when the pressing column fixes the machined gear, the machining process requires an operator to manually position the axis of the machined gear, the accuracy of the manual positioning is low, and when a hobbing machine performs hobbing on the machined gear, the machined gear is prone to have an axis deviation, and the machining gear has a defect of low accuracy.

SUMMERY OF THE UTILITY MODEL

In order to effectively avoid the axle center skew of processing gear, guarantee gear machining precision, this application provides a clamping device of numerical control gear hobbing machine.

The application provides a clamping device of numerical control gear hobbing machine adopts following technical scheme:

a clamping device of a numerical control gear hobbing machine comprises a horizontally arranged base, a support frame fixed on the base, a workbench fixed on the base, a fixing assembly used for fixing a machining gear, a positioning assembly used for positioning the axis of the machining gear and a second driving assembly used for driving the positioning assembly to move in the vertical direction; the fixed subassembly including rotate install in carousel on the workstation, encircle the axis setting of carousel and with a plurality of stripper plates of carousel sliding fit, locating component including set up in on the support frame and with the support frame sliding fit's location awl in the vertical direction, the pointed end of location awl with the axis coincidence of carousel.

Through adopting above-mentioned technical scheme, the location awl slides downwards from the support frame, side and stripper plate laminating and counterbalance until the location awl, when the location awl continues to move down, the vertical line in most advanced place that a plurality of stripper plates used the location awl expands outward around as the axis, the side that the axis was kept away from to the stripper plate offsets with the processing gear inside wall, make the processing gear fixed, and the most advanced place straight line of location awl coincides with carousel axis, effectively avoid the axle center location of processing gear skew, thereby guarantee the precision of processing gear.

Preferably, the turntable is provided with a guide groove, the length direction of the guide groove is perpendicular to the axis of the turntable, the extrusion plate is arranged in the guide groove and is in sliding fit with the guide groove, the extrusion plate and the guide groove are far away from a first spring is fixed between the inner side walls of the axis of the turntable, the turntable is provided with a sliding groove, the length direction of the sliding groove is parallel to the length direction of the guide groove, and the extrusion plate is fixed with a sliding block which is used for being in sliding fit with the sliding groove.

Through adopting above-mentioned technical scheme, the cooperation that slides of stripper plate and guide way, the guide way provides the guide effect for the stripper plate outwards slides, and slider and spout cooperation of sliding for the stripper plate outwards slides more stably, and the setting up of first spring makes the stripper plate be close to the axis of carousel when not cooperating with the location awl, thereby conveniently processes placing of gear.

Preferably, be provided with on the support frame and be used for the installation the mount table of location awl, the mount table with the support frame cooperation of sliding, locating component still including set up in the mount table with connecting piece between the location awl, the connecting piece including rotate install in fixed part on the mount table, be fixed in on the location awl and with the removal portion of connection can be dismantled to the fixed part.

Through adopting above-mentioned technical scheme, through the connection of dismantling of connecting piece fixed part and removal portion for the location awl can be followed the mount table and dismantled, makes things convenient for operating personnel to change the location awl, and the distance that the stripper plate expands outward can be decided to the size of location awl, thereby makes the stripper plate fix the processing gear of different internal diameters.

Preferably, a connecting block is fixed on the side face, close to the axis of the rotating disc, of the extrusion plate, and the side face, close to the positioning cone, of the connecting block is attached to and abutted against the side face of the positioning cone.

Through adopting above-mentioned technical scheme, the side laminating that connecting block and location awl are close to each other offsets for the area of contact maximize of location awl and connecting block is favorable to the atress of stripper plate to be stable, thereby makes the stripper plate process of sliding more steady.

Preferably, a connecting column is fixed on the rotary table, the axis of the connecting column coincides with the axis of the rotary table, one end of the connecting column, which is far away from the rotary table, is in plug-in fit with the positioning cone, and a rubber pad is arranged on the end face of one end of the connecting column, which is far away from the rotary table.

Through adopting above-mentioned technical scheme, the rubber pad on the spliced pole is favorable to preventing that the pointed end of location awl from receiving the damage, and pegs graft between spliced pole and the location awl and cooperate, is favorable to judging whether vertical line and carousel axis that location awl pointed end was located are on same straight line.

Preferably, the device further comprises a first driving assembly for driving the turntable to rotate, wherein the first driving assembly comprises a motor arranged on the base, a driving gear fixed on an output shaft of the motor, and a driven gear fixed on the turntable and meshed with the driving gear.

Through adopting above-mentioned technical scheme, the motor rotates and drives the driving gear and rotate, and the driving gear rotates and makes driven gear rotate, and driven gear rotates and makes the carousel rotate.

Preferably, the cover is equipped with on the removal portion be used for with removal portion threaded connection's solid fixed ring, packing ring, the packing ring set up in gu fixed ring with between the location awl.

Through adopting above-mentioned technical scheme, when location awl and stripper plate mutually supported make the processing gear by fixed, solid fixed ring spiral moves down for the processing gear is in between packing ring and the carousel, thereby restricts the removal of processing gear in vertical direction.

Preferably, the second drive assembly including the level set up in dwang on the base, fix first bevel gear on the dwang, be used for with first bevel gear meshing's second bevel gear, fix on second bevel gear and in the lead screw that the support frame rotated the connection, the mount table with lead screw thread fit, the mount table with the side that the support frame is close to each other is slided and is cooperated, the dwang stretches out the end fixing of base has the runner, be fixed with the handle on the runner.

Through adopting above-mentioned technical scheme, when operating personnel rotated the handle, the handle rotated and drives the runner and rotate to make the dwang rotate, the dwang rotated and drives first bevel gear and rotate, first bevel gear and second bevel gear intermeshing, first bevel gear drives second bevel gear and rotates, second bevel gear rotates and makes the lead screw rotate, thereby makes the mount table reciprocate along the dwang.

In summary, the present application includes at least one of the following beneficial technical effects:

the extrusion plate enables the machined gear to be fixed, and the straight line where the tip of the positioning cone is located is superposed with the axis of the rotary table, so that the axis positioning deviation is effectively avoided, and the precision of the machined gear is guaranteed;

can dismantle between location awl and the mount table and be connected, make things convenient for operating personnel to change the location awl, the distance that the stripper plate expands outward can be decided to the size of location awl to make the stripper plate fix the processing gear of different internal diameters.

Drawings

Fig. 1 is a schematic structural diagram of a clamping device of a numerically controlled gear hobbing machine according to an embodiment of the present application.

Fig. 2 is a schematic diagram of the internal structure of a clamping device of a numerically controlled gear hobbing machine.

Fig. 3 is a schematic view of the internal structure of the turntable.

Fig. 4 is a schematic view of the internal structure of the connector.

Description of reference numerals: 1. a base; 11. mounting grooves; 12. a rotation chamber; 2. a support frame; 21. a vertical section; 22. a transverse segment; 23. an installation table; 3. a work table; 31. a first groove; 32. a second groove; 4. a fixing assembly; 41. a turntable; 411. a guide groove; 412. a chute; 42. a pressing plate; 421. extruding the end; 4211. connecting blocks; 422. a slipping end; 4221. a first spring; 4222. a slider; 43. connecting columns; 431. a tapered groove; 44. a rubber pad; 5. a positioning assembly; 51. positioning a cone; 52. a connecting member; 521. a fixed part; 5211. connecting holes; 522. a moving part; 523. an elastic member; 5231. a fixing strip; 5232. a first connecting bar; 5233. a second connecting strip; 5234. a third connecting strip; 5235. a second spring; 6. a first drive assembly; 61. a motor; 62. a driving gear; 63. a driven gear; 7. a second drive assembly; 71. rotating the rod; 72. a screw rod; 73. a first bevel gear; 74. a second bevel gear; 75. a rotating wheel; 76. a handle; 8. a fixing ring; 9. a gasket.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a clamping device of a numerical control gear hobbing machine. Referring to fig. 1 and 2, the numerical control gear hobbing machine comprises a base 1, a support frame 2, a workbench 3, a fixing component 4, a positioning component 5, a first driving component 6 and a second driving component 7, wherein the base 1 is rectangular plate-shaped, and the base 1 is horizontally arranged. Support frame 2 sets up on base 1, and support frame 2 includes vertical section 21 and horizontal section 22, and vertical section 21 is rectangular plate-like, and the lower terminal surface of vertical section 21 and base 1's last fixed surface be connected, the up end of vertical section 21 and the bottom surface fixed connection of horizontal section 22. The transverse section 22 is rectangular plate-shaped, and one end part of the transverse section 22 far away from the vertical section 21 is positioned right above the base 1.

Referring to fig. 1 and 2, the table 3 has a rectangular plate shape, and the bottom surface of the table 3 is fixedly connected to the upper surface of the base 1. First recess 31 has been seted up to workstation 3 upper surface, and first recess 31 opening is circular, has seted up second recess 32 on the inside wall of first recess 31, and second recess 32 opening is the rectangle. The fixing assembly 4 comprises a rotary disc 41 and a pressing plate 42, the cross section of the rotary disc 41 is disc-shaped, the rotary disc 41 is arranged in the first groove 31, the axis of the rotary disc 41 is overlapped with the axis of the first groove 31, the side surface of the rotary disc 41 is rotatably connected with the inner side surface of the first groove 31, and the upper surface of the rotary disc 41 is higher than the upper surface of the workbench 3.

Referring to fig. 2 and 3, the upper surface of the turntable 41 is provided with three guide grooves 411, the openings of the guide grooves 411 are rectangular, the length direction of the guide grooves 411 is perpendicular to the axial direction of the turntable 41, and the three guide grooves 411 are uniformly distributed around the axial direction of the turntable 41. The inner side wall of the guide slot 411 is provided with a sliding slot 412, the opening of the sliding slot 412 is rectangular, the length direction of the sliding slot 412 is parallel to the length direction of the guide slot 411, and two inner side walls of a single guide slot 411 are respectively provided with a sliding slot 412. The turntable 41 is provided with a connecting column 43, the connecting column 43 is a cylinder, the axis of the connecting column 43 coincides with the axis of the turntable 41, the lower end of the connecting column 43 is fixedly connected with the turntable 41, and the upper end of the connecting column 43 is provided with a tapered groove 431. The tapered groove 431 has a conical shape.

Referring to fig. 2 and 3, the pressing plate 42 includes a pressing end 421 and a sliding end 422, the pressing end 421 is arc-shaped, the pressing end 421 is vertically disposed, the height of the pressing plate 42 is equal to the thickness of the machined gear, and the bottom surface of the pressing end 421 is in sliding fit with the upper surface of the rotating disc 41. The end face, close to the connecting column 43, of the extrusion end 421 is fixed with a connecting block 4211, the end face, close to the connecting column 43, of the connecting block 4211 is arc-shaped, and the arc-shaped end face of the connecting block 4211 is in inserting fit with the positioning cone 51. The side of the extrusion end 421 away from the connecting column 43 is provided with anti-slip lines, and the anti-slip lines are used for preventing the extrusion end 421 from slipping between the side where the extrusion end 421 and the processing gear are mutually attached. The sliding end 422 is arc-shaped plate-shaped, the sliding end 422 is arranged in the guide groove 411, the upper surface of the sliding end 422 is fixedly connected with the bottom surface of the extrusion end 421, and the bottom surface of the sliding end 422 is in sliding fit with the inner bottom surface of the guide groove 411. The side face of one side of the sliding end 422 is attached to the arc-shaped side face of the connecting column 43, the side face of the other side of the sliding end 422 is provided with a first spring 4221, one end of the first spring 4221 is fixedly connected with the end face of the sliding end 422 close to the first spring 4221, and the other end of the first spring 4221 is fixedly connected with the inner side face of the guide groove 411 far away from the connecting column 43. Two side walls of the sliding end 422 close to the sliding groove 412 are respectively fixed with a sliding block 4222, the sliding block 4222 is rectangular block-shaped, and the side surface of the sliding block 4222 far away from the sliding end 422 is in sliding fit with the inner bottom surface of the sliding groove 412.

Referring to fig. 1 and 2, the first driving assembly 6 includes a motor 61, a driving gear 62, and a driven gear 63. The base 1 is provided with a mounting groove 11, the opening of the mounting groove 11 is rectangular, and the motor 61 is fixedly connected with the inner bottom surface of the mounting groove 11. The output shaft of the motor 61 passes through the base 1 and extends into the second groove 32, and the driving gear 62 is sleeved on the output shaft of the motor 61 and is fixedly connected with the output shaft of the motor 61. The upper surface of the driven gear 63 is fixedly connected with the bottom surface of the rotating disc 41, the bottom surface of the driven gear 63 is rotatably connected with the inner bottom surface of the first groove 31, the axis of the driven gear 63 is superposed with the axis of the rotating disc 41, and the driving gear 62 is meshed with the driven gear 63. When the motor 61 is started, the output shaft of the motor 61 drives the driving gear 62 to rotate, the driving gear 62 drives the driven gear 63 to rotate, and the driven gear 63 rotates the turntable 41.

Referring to fig. 1 and 2, a mounting table 23 is arranged on the vertical section 21 of the support frame 2, the mounting table 23 is rectangular plate-shaped, and the side surfaces of the mounting table 23 and the vertical section 21 close to each other are attached and abutted. The positioning assembly 5 comprises a positioning cone 51 and a connecting piece 52. The positioning cone 51 is conical, the tip of the positioning cone 51 is attached to and abutted against the conical bottom of the conical groove 431, the vertical line of the tip of the positioning cone 51 is overlapped with the axis of the connecting column 43, and the side surface of the positioning cone 51 is abutted against the side surface of the connecting block 4211. Be fixed with rubber pad 44 on the inside wall of bell jar 431, rubber pad 44 on the spliced pole 43 is favorable to preventing that the pointed end of location awl 51 from receiving the damage, and operating personnel can judge whether the vertical line that the pointed end of location awl 51 was located and carousel 41 axis are on the collinear according to spliced pole 43 and location awl 51's grafting cooperation.

Referring to fig. 1 and 2, the connector 52 includes a fixed portion 521 and a movable portion 522. The fixing portion 521 is a circular rod, an axis of the fixing portion 521 coincides with an axis of the connecting column 43, one end of the fixing portion 521 is rotatably mounted on the bottom surface of the mounting table 23, and a connecting hole 5211 is formed in the other end of the fixing portion 521. The moving part 522 is a circular rod, the axis of the moving part 522 is overlapped with the axis of the connecting column 43, one end face of the moving part 522 is fixedly connected with the upper end face of the positioning cone 51, and the other end of the moving part 522 is arranged in the fixing part 521.

Referring to fig. 2 and 4, an elastic member 523 is disposed between the fixed portion 521 and the moving portion 522, the elastic member 523 is made of elastic plastic, the elastic member 523 includes a fixed strip 5231, a first connecting strip 5232, a second connecting strip 5233 and a third connecting strip 5234, the fixed strip 5231 is vertically disposed, and the first connecting strip 5232, the second connecting strip 5233 and the third connecting strip 5234 are sequentially fixed on a side surface of the fixed strip 5231 close to a side wall of the moving portion 522 from top to bottom. An end of the first connection bar 5232 away from the moving portion 522 extends out of the moving portion 522 and is inserted into and engaged with the connection hole 5211. One end of the second connecting bar 5233, which is far away from the fixing bar 5231, extends out of the moving portion 522, the second connecting bar 5233 is sleeved with a second spring 5235, one end of the second spring 5235 is fixedly connected with the fixing bar 5231, and the other end of the second spring 5235 is fixedly connected with the inner side wall of the moving portion 522. An end of the third connecting strip 5234 away from the fixing strip 5231 is fixedly connected to the inner sidewall of the moving part 522. The cover is equipped with solid fixed ring 8 on the removal portion 522, and solid fixed ring 8 is the ring shape, and solid fixed ring 8 and removal portion 522 threaded connection, the axis of solid fixed ring 8 and the coincidence of removal portion 522 axis, and be provided with packing ring 9 between solid fixed ring 8 and the location awl 51.

When the inner side wall of the processing gear is abutted by the extrusion plate 42, the upper surface of the positioning cone 51 is not higher than the upper surface of the extrusion plate 42, at this time, the operator rotates the fixing ring 8, so that the fixing ring 8 and the gasket 9 move downwards along the moving portion 522, finally the gasket 9 contacts and abuts against the processing gear, and the fixing ring 8 and the gasket 9 prevent the processing gear from moving in the vertical direction. The machining gear and the moving part 522 are detachably connected with the fixed part 521 through an elastic member 523, so that an operator can replace the positioning cone 51 to fix the clamping device to the machining gears with different sizes.

Referring to fig. 1 and 2, a rotation cavity 12 is formed in the base 1, the rotation cavity 12 is rectangular, and the length direction of the rotation cavity 12 is consistent with the length direction of the base 1. The second driving assembly 7 comprises a rotating rod 71, a screw 72, a first bevel gear 73, a second bevel gear 74, a rotating wheel 75 and a handle 76, the rotating rod 71 is in a circular rod shape, the rotating rod 71 is arranged in the base 1 in a penetrating manner, the rotating rod 71 is horizontally arranged, and the length direction of the rotating rod 71 is parallel to the length direction of the base 1. One end of the rotating rod 71 extends into the rotating cavity 12, and the other end of the rotating rod 71 extends out of the base 1. The first bevel gear 73 is disposed in the rotating cavity 12, and the first bevel gear 73 is sleeved on the rotating rod 71 and is fixedly connected with the rotating rod 71. The rotating wheel 75 is in a circular disc shape, the rotating wheel 75 is arranged on the end face of the rotating rod 71 extending out of the base 1, the axis of the rotating wheel 75 is overlapped with the axis of the rotating rod 71, the rotating wheel 75 is fixedly connected with the end face, close to the rotating rod 71, of the rotating rod 71, and the end face, far away from the rotating rod 71, of the rotating wheel 75 is fixedly connected with the handle 76. The screw rod 72 is in a round rod shape, the screw rod 72 is vertically arranged, one end of the screw rod 72 is rotatably connected with the bottom surface of the transverse section 22 of the support frame 2, the other end of the screw rod 72 extends to the rotating cavity 12 and is fixedly connected with the second bevel gear 74, the second bevel gear 74 is meshed with the first bevel gear 73, and the screw rod 72 is in threaded fit with the mounting table 23. When an operator rotates the handle 76, the handle 76 rotates to drive the rotating wheel 75 to rotate, so that the rotating rod 71 rotates, the rotating rod 71 rotates to drive the first bevel gear 73 to rotate, the first bevel gear 73 is meshed with the second bevel gear 74, the first bevel gear 73 drives the second bevel gear 74 to rotate, the second bevel gear 74 rotates to drive the screw 72 to rotate, and therefore the mounting platform 23 moves up and down along the screw 72.

The implementation principle of the clamping device of the numerical control gear hobbing machine in the embodiment of the application is as follows: the operator rotates the handle 76 to make the positioning cone 51 slide downwards until the side surface of the positioning cone 51 is attached to and abutted against the connecting block 4211, and when the positioning cone 51 moves downwards continuously, the plurality of squeezing plates 42 expand outwards around the vertical line of the tip of the positioning cone 51. The side of the pressing plate 42 away from the axis of the turntable 41 abuts against the inner side wall of the machining gear, so that the machining gear is fixed, and the fixing ring 8 and the gasket 9 prevent the machining gear from moving in the vertical direction. And the straight line of the tip of the positioning cone 51 coincides with the axis of the turntable 41, so that the axis positioning deviation is effectively avoided, and the machining precision of the machined gear is ensured.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a clamping device of numerical control gear hobbing machine, includes base (1) that the level set up, be fixed in support frame (2) on base (1), be fixed in workstation (3) on base (1), its characterized in that: the machining device also comprises a fixing component (4) for fixing the machining gear, a positioning component (5) for positioning the axle center of the machining gear, and a second driving component (7) for driving the positioning component (5) to move in the vertical direction; fixed subassembly (4) including rotate install in carousel (41), surround on workstation (3) the axis setting of carousel (41) and with carousel (41) a plurality of stripper plates (42) of cooperation that slide, locating component (5) including set up in on support frame (2) and with support frame (2) slide complex location awl (51) in vertical direction, the pointed end of location awl (51) with the axis coincidence of carousel (41).

2. A clamping device for a numerically controlled gear hobbing machine according to claim 1, characterized in that: seted up on carousel (41) guide way (411), the length direction of guide way (411) with the axis mutually perpendicular of carousel (41), stripper plate (42) set up in guide way (411) and with guide way (411) sliding fit, stripper plate (42) and guide way (411) are kept away from be fixed with first spring (4221) between the inside wall of carousel (41) axis, spout (412) have been seted up on carousel (41), the length direction of spout (412) with the length direction of guide way (411) is parallel, be fixed with on stripper plate (42) be used for with spout (412) sliding fit's slider (4222).

3. A clamping device for a numerically controlled gear hobbing machine according to claim 1, characterized in that: be provided with on support frame (2) and be used for the installation mount table (23) of location awl (51), mount table (23) with support frame (2) cooperation of sliding, locating component (5) still including set up in mount table (23) with connecting piece (52) between location awl (51), connecting piece (52) including rotate install in fixed part (521) on mount table (23), be fixed in on location awl (51) and with removal portion (522) that fixed part (521) can dismantle the connection.

4. A clamping device for a numerically controlled gear hobbing machine according to claim 1, characterized in that: and a connecting block (4211) is fixed on the side surface of the extrusion plate (42) close to the axis of the turntable (41), and the side surface of the connecting block (4211) close to the positioning cone (51) is attached to and abutted against the side surface of the positioning cone (51).

5. A clamping device for a numerically controlled gear hobbing machine according to claim 1, characterized in that: be fixed with spliced pole (43) on carousel (41), the axis of spliced pole (43) with the axis coincidence of carousel (41), spliced pole (43) are kept away from carousel (41) one end with location awl (51) cooperation of pegging graft, spliced pole (43) are kept away from be provided with rubber pad (44) on the terminal surface of carousel (41) one end.

6. A clamping device for a numerically controlled gear hobbing machine according to claim 1, characterized in that: the automatic transmission mechanism is characterized by further comprising a first driving assembly (6) for driving the rotary disc (41) to rotate, wherein the first driving assembly (6) comprises a motor (61) arranged on the base (1), a driving gear (62) fixed on an output shaft of the motor (61), and a driven gear (63) fixed on the rotary disc (41) and meshed with the driving gear (62).

7. A clamping device for a numerically controlled gear hobbing machine according to claim 3, characterized in that: the cover is equipped with on removal portion (522) be used for with removal portion (522) threaded connection's solid fixed ring (8), packing ring (9) set up in gu fixed ring (8) with between location awl (51).

8. A clamping device for a numerically controlled gear hobbing machine according to claim 3, characterized in that: second drive assembly (7) including the level set up in dwang (71) on base (1), fix first bevel gear (73) on dwang (71), be used for with second bevel gear (74) of first bevel gear (73) meshing, fix on second bevel gear (74) and in support frame (2) rotate lead screw (72) of connecting, mount table (23) with lead screw (72) screw-thread fit, mount table (23) with the side sliding fit that support frame (2) are close to each other, dwang (71) are stretched out the end fixing of base (1) has runner (75), be fixed with handle (76) on runner (75).