CN204818322U - A anchor clamps for gear hobbing processing - Google Patents

Abstract

The utility model discloses an anchor clamps for gear hobbing processing, including link and back shaft, the bell mouth has been seted up on the back shaft, two bell mouths all are provided with two location nails, and two location nails all are equipped with first slippery fellow, all are provided with the regulating block in two bell mouths, all are provided with first spout on the both sides wall of two regulating blocks, being provided with the fixed disk in the back shaft, still including the ball subassembly, the ball subassembly includes two balls and first elastic component, all is provided with the second slippery fellow on each ball, still be provided with the movable rod in the back shaft, the end of movable rod is provided with active partition, is provided with the arch on active partition's the terminal surface. The utility model discloses in, the movable rod can drive active partition and be close to to the fixed disk, and two archs will be then will slowly act on two ball subassemblies for first elastic component is all overcome to two balls in each group's ball subassembly supporting role progressively slides to high position department along the anchor ring of fixed disk, and then makes the regulating block progressively shift up in order to reach the purpose that improves the fastening dynamics.

Description

For the fixture of gear hobbing process

Technical field

The utility model relates to Gear Processing field, specifically refers to the fixture for gear hobbing process.

Background technology

In the processing technology of gear hobbing, Hobbing belongs to generating, the wheel and rack transmission that can will regard as without back lash.When gear hobbing rotates a circle, be equivalent to tooth bar and move a cutter tooth in normal direction, the continuous transmission of hobboing cutter, just as the tooth bar of an endless at continuous moving.When between hobboing cutter and gear hobbing base in strict accordance with gear when the gearratio positively engaging transmission of tooth bar, the envelope of cutter tooth on a series of position of hobboing cutter just defines the involute profile of workpiece.Along with the vertical feed of hobboing cutter, required involute profile can be gone out by rolling cut.

But in actual mechanical process, usually adopt two or plural tooth base carries out rolling cut, to improve working (machining) efficiency simultaneously.But the fixing impact being easily subject to many factors of gear ring, install as hobboing cutter and misalign, after hobboing cutter sharpening, the radial error of lip surface increases, and fixture produces runout etc., all can affect the machining accuracy of tooth base, increases the scrappage of tooth base.

Utility model content

The purpose of this utility model is the fixture being provided for gear hobbing process, facilitates the tightness of tooth base when rolling cut, and tooth base carries out trace adjustment, reaches the object improving machining accuracy.

The purpose of this utility model is achieved through the following technical solutions:

For the fixture of gear hobbing process, comprise link and to be fixed on link and the back shaft that arranges of hollow, the outer wall of back shaft has been threaded wheel flange, the sidewall of back shaft offers two corresponding bellmouths arranged; Two bellmouths are provided with two along correspondence equal on the inwall of back shaft circumference can two locating pins of bellmouth telescopic moving relatively, the free end of two locating pins at each bellmouth place is equipped with width and is greater than the first foxy of locating pin, the regulating block matched with bellmouth inwall is provided with in two bellmouths, the two side of two regulating blocks is provided with the first chute that the little inner chamber of opening is large, two first slippery fellows at each bellmouth place insert in two first chutes respectively accordingly; Fixed disk is provided with in back shaft, the anchor ring of fixed disk is provided with the second chute, also comprise two groups of corresponding with two regulating blocks respectively ball assemblies, ball assembly comprises two and can act on the ball of regulating block bottom and be positioned at the first elastic component of the second chute, the two ends of the first elastic component are connected with two balls respectively, each ball is provided with and adapts with the second chute and to insert the second foxy of the second chute; Also slide in back shaft and be provided with motion bar, the end of motion bar is provided with movable disk, movable disk is just to the end face of link being provided with two projections that can coordinate with two ball assemblies, protruding in arc-shaped, and its arc length is axially successively decreased towards the direction of link along back shaft.

In the utility model, bellmouth runs through the inside and outside wall of back shaft; Regulating block can be taper and arranges.For making ball act on regulating block better, the external diameter size of fixed disk should match with the position of two regulating blocks, and ball answers evagination in the anchor ring of fixed disk.During the utility model application, first two tooth bases being oppositely arranged and being then set on back shaft, making it to be fixed two tooth bases by rotating wheel flange, until two tooth bases with the center of bellmouth for symmetric points, to be fasteningly symmetricly set on back shaft.Due to the setting of fixed disk special diameter size, the local of regulating block is placed between two tooth bases highlightedly, and two first slippery fellows insert in two first chutes accordingly.Link is then fixed on lathe, by the rolling cut operation of tooth base to complete the production and processing of gear hobbing.In use procedure, due to many factors, two the tooth bases be oppositely arranged there will be certain circular runout and cause its fixed position to offset, and namely need to finely tune tooth base.

During the utility model original state, movable disk and fixed disk are separated, and in each group ball assembly, two balls are positioned at relative low level place under the supporting role of the first elastic component, now regulating block then at Gravitative Loads in being positioned at low level place.Be connected with the end of motion bar by cylinder or the output of hydraulic cylinder, motion bar is driven near the direction of link, now, motion bar then can drive movable disk close to fixed disk, two projections then slowly will act on two ball assemblies, and the supporting role making two balls in each group ball assembly all overcome the first elastic component is moved in opposite directions.Because the second slippery fellow inserts in the second chute, two balls thus in each group ball assembly all progressively can slide to high level along the anchor ring of fixed disk, regulating block then in two ball moving process progressively on move.When two protruding arc length are the longest insert two ball inter-modules time, two balls then slide into highest order, now, the rising displacement of regulating block reaches so maximum, regulating block then can produce opposing compression with the end contact of tooth base along the two side of back shaft circumference, fastening dynamics between two tooth bases is increased again, and then reduces the movement deviation of tooth base, reach the object improving gear hobbing process precision.And setting that is foxy by first and the first chute, not only can realize regulating block sliding up and down in bellmouth, regulating block also can be avoided to depart from bellmouth moving up and down in process; Also can carry out part location to regulating block simultaneously, avoid it that circumference occurs in process and rotate with the fixation of impact to two tooth bases.

After manufacturing procedure terminates, outside driving arrangement is again utilized to be moved along the direction away from link by motion bar, two projections are slowly separated with two ball assemblies, in this process, two balls in each group ball assembly then slowly reset to low level and slide under the effect of the first elastic component, correspondingly, the position of regulating block also starts to decline, and the spacing between two finished product gear hobbings reduces gradually, correspondingly, fastening dynamics between two finished product gear hobbings reduces gradually, manually can dismantle the gear hobbing of finished product fast, substantially increase the working (machining) efficiency of gear hobbing.

For ease of the installation of regulating block, further, described regulating block comprises the operate portions that is provided with described first chute and is removably fixed with operate portions and is positioned at the upper cover part above operate portions.In the utility model, upper cover part can be threaded with operate portions, during installation, first rotates upper cover part and makes it depart from operate portions, then the first slippery fellow inserted in it from the upper end of the first chute, then upper cover part be installed in operate portions.

Also comprise jacking bar, described jacking bar is slidably arranged in back shaft, and when finely tuning tooth base, the position of jacking bar is configured to, and the direction that the end promotion motion bar of jacking bar moves along its orientation of its axis link is moved.When finely tuning tooth base, outside driving arrangement is directly by power administration activities bar, particularly in the moment that driving arrangement starts, motion bar is made to have larger initial momentum, the instantaneous translational speed of motion bar is too fast, the eustasy frequency regulated easily is made to increase, the fine setting of tooth base targetedly cannot be realized, the utility model arranges jacking bar in back shaft, and end part interval one end distance of the end of jacking bar distance motion bar, when external drive device start, after driving jacking bar to travel a segment distance, the motion state of jacking bar tends towards stability, namely jacking bar is with at the uniform velocity state and motion bar ends contact, and driven to appropriate station, the lifting of regulating block is made to keep stable, and then more flexibly the fastening dynamics between two tooth bases is regulated, ensure the machining accuracy of tooth base.

For improving ball to the sensitivity of regulating block effect and the degree of accuracy, further, the bottom of described regulating block is circular arc, and in ball assembly described in each, two balls all act on the middle part of regulating block bottom.So, the setting of circular arc, can be convenient to ball and act on regulating block when sliding, and avoids the problem occurring skidding and transmission failure.And act on the middle part of regulating block bottom, stepless action regulating block can be convenient to, avoid regulating block moving up and down in process the problem occurring jolting, tilting.

For realizing the telescopic moving of the relative bellmouth of locating pin, further, also comprise the 3rd elastic component be arranged in described back shaft axial wall, described locating pin is arranged in described bellmouth by the 3rd elastic component.In the utility model, because regulating block matches with the inwall of bellmouth, thus, the cross-sectional width of regulating block also radially successively decreases along back shaft, so, when regulating block moves up and down in process, distance between it and the first slippery fellow will certainly change, particularly, when regulating block moves, the distance between regulating block and the first slippery fellow progressively reduces; When regulating block moves down, the distance between regulating block and the first slippery fellow then progressively increases.By the setting of the 3rd elastic component, then step down by locating pin or supply the first foxy corresponding distance to meet the change in location relation between regulating block and the first slippery fellow.

For realizing fixed disk fixing in back shaft, further, described link being provided with top board, top board being fixed with the support tube for supporting described fixed disk and the second elastic component acting on described movable disk.The setting of the second elastic component can realize the Rapid reset to movable disk, so, two projections can be made to depart from two ball assemblies fast, and then realizes the quick-detachment to finished product gear hobbing.In addition, the second elastic component also can avoid the excessive movement of movable disk, and then prevents the not in place or lifting of the lifting of regulating block excessively.

Further, described first elastic component and described second elastic component are Compress Spring.Select Compress Spring can carry out multidirectional slowing down to the movement of movable disk and the transmission of ball respectively, avoid them when mobile, occur the problem of stress raisers because of discontinuity equalization.

The utility model compared with prior art, has following advantage and beneficial effect:

1, the utility model is by cylinder or the output of hydraulic cylinder is connected with the end of motion bar, motion bar can drive movable disk close to fixed disk, two projections then slowly will act on two ball assemblies, the supporting role making two balls in each group ball assembly all overcome the first elastic component is progressively slided to height point place along the anchor ring of fixed disk, regulating block then in two ball moving process progressively on move, like this, the two side of regulating block then can produce opposing compression with the end contact of tooth base, fastening dynamics between two tooth bases is increased again, and then reduce the movement deviation of tooth base, reach the object improving gear hobbing process precision.

2, the utility model arranges jacking bar in back shaft, and end part interval one end distance of the end of jacking bar distance motion bar, when external drive device start, after driving jacking bar to travel a segment distance, the motion state of jacking bar tends towards stability, and namely jacking bar is with at the uniform velocity state and motion bar ends contact, and driven to appropriate station, make the lifting of regulating block keep stable, and then more flexibly the fastening dynamics between two tooth bases is regulated, ensure the machining accuracy of tooth base.

3, the circular arc of regulating block bottom is arranged, and can be convenient to ball and act on regulating block when sliding, and avoids the problem occurring skidding and transmission failure.And act on the middle part of regulating block bottom, stepless action regulating block can be convenient to, avoid regulating block moving up and down in process the problem occurring jolting, tilting.

4, the utility model is by the setting of the second elastic component, and can make when finely tuning tooth base, movable disk has time enough and cushions, and then prevents the not in place or lifting of the lifting of regulating block excessively.

5, the setting of and first chute foxy by first, not only can realize regulating block sliding up and down in bellmouth, and regulating block also can be avoided to depart from bellmouth moving up and down in process; Also can carry out part location to regulating block simultaneously, avoid it that circumference occurs in process and rotate with the fixation of impact to two tooth bases.The setting of and second chute foxy by second, not only can realize the slip of ball on fixed disk anchor ring, also can avoid ball in moving process, depart from the anchor ring of fixed disk., the first elastic component is arranged in the second chute meanwhile, the movement of the first elastic component to regulating block can be avoided to impact.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms a application's part, does not form the restriction to the utility model embodiment.In the accompanying drawings:

Fig. 1 is the structural representation of the fixture specific embodiment for gear hobbing process described in the utility model;

Fig. 2 is the structural representation for a fixed disk specific embodiment in the fixture of gear hobbing process described in the utility model;

Fig. 3 is the structural representation for a movable disk specific embodiment in the fixture of gear hobbing process described in the utility model;

Fig. 4 is the structural representation for a regulating block specific embodiment in the fixture of gear hobbing process described in the utility model.

Mark and corresponding parts title in accompanying drawing: 1, jacking bar, 2, back shaft, 3, wheel flange, 4, tooth base, 5, regulating block, 6, fixed disk, 7, bellmouth, 8, ball, 9, motion bar, the 10, second elastic component, 11, top board, 12, link, 13, the first elastic component, 14, movable disk, 15, protruding, 16, support tube, 17, locating pin, 18, first is foxy, the 19, first chute, the 20, second chute, 21, second is foxy, and 22, operate portions, 23, upper cover part, the 24, the 3rd elastic component.

Detailed description of the invention

Clearly understand for making the purpose of this utility model, technical scheme and advantage, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.

Embodiment 1

As shown in Figures 1 to 4, for the fixture of gear hobbing process, comprise link 12 and to be fixed on link 12 and the back shaft 2 that arranges of hollow, the outer wall of back shaft 2 has been threaded wheel flange 3, the sidewall of back shaft 2 offers two corresponding bellmouths 7 arranged; Two bellmouths 7 are provided with two along correspondence equal on the inwall of back shaft 2 circumference can two locating pins 17 of bellmouth 7 telescopic moving relatively, the free end of two locating pins 17 at each bellmouth 7 place is equipped with the first slippery fellow 18 that width is greater than locating pin 17, the regulating block 5 matched with bellmouth 17 inwall is provided with in two bellmouths 7, the two side of two regulating blocks 5 is provided with the first chute 19 that the little inner chamber of opening is large, two first slippery fellows 18 at each bellmouth 7 place insert in two first chutes 19 respectively accordingly; Fixed disk 6 is provided with in back shaft 2, the anchor ring of fixed disk 6 is provided with the second chute 20, also comprise two groups of corresponding with two regulating blocks 5 respectively ball assemblies, ball assembly comprises two and can act on the ball 8 of regulating block 5 bottom and be positioned at the first elastic component 13 of the second chute 20, the two ends of the first elastic component 13 are connected with two balls 8 respectively, each ball 8 is provided with and adapts with the second chute 20 and to insert the second slippery fellow 21 of the second chute 20; Also slide in back shaft 2 and be provided with motion bar 9, the end of motion bar 9 is provided with movable disk 14, the end face of movable disk 14 just to link 12 is provided with two projections 15 that can coordinate with two ball assemblies, protruding 15 in arc-shaped, and its arc length is axially successively decreased towards the direction of link 12 along back shaft 2.

In the present embodiment, bellmouth 7 runs through the inside and outside wall of back shaft 2; Regulating block 5 can be taper and arranges.For making ball 8 act on regulating block 5 better, the external diameter size of fixed disk 6 should match with the position of two regulating blocks 5, and ball 8 answers evagination in the anchor ring of fixed disk 6.During the present embodiment application, first two tooth bases being oppositely arranged and being then set on back shaft 2, making it to be fixed two tooth bases by rotating wheel flange 3, until two tooth bases with the center of bellmouth 7 for symmetric points, to be fasteningly symmetricly set on back shaft 2.Due to the setting of fixed disk 6 special diameter size, the local of regulating block 5 is placed between two tooth bases highlightedly, and two first slippery fellows 18 insert in two first chutes 19 accordingly.Link 12 is then fixed on lathe, by the rolling cut operation of tooth base to complete the production and processing of gear hobbing.In use procedure, due to many factors, two the tooth bases be oppositely arranged there will be certain circular runout and cause its fixed position to offset, and namely need to finely tune tooth base.

During the present embodiment original state, movable disk 14 and fixed disk 6 are separated, and in each group ball assembly, two balls 8 are positioned at relative low level place under the supporting role of the first elastic component 13, now regulating block 5 at Gravitative Loads in being positioned at low level place.Be connected with the end of motion bar 9 by cylinder or the output of hydraulic cylinder, motion bar 9 is driven near the direction of link 12, now, motion bar 9 can drive movable disk 14 close to fixed disk 6, two protruding 15 then slowly will act on two ball assemblies, and the supporting role making two balls 8 in each group ball assembly all overcome the first elastic component 13 is moved in opposite directions.Because the second slippery fellow 21 inserts in the second chute 20, thus two balls 8 in each group ball assembly all progressively can slide to high level along the anchor ring of fixed disk 6, regulating block 5 then in two ball 8 moving process progressively on move, like this, regulating block 5 then can produce opposing compression with the end contact of tooth base along the two side of back shaft 2 circumference, fastening dynamics between two tooth bases is increased again, and then reduces the movement deviation of tooth base, reach the object improving gear hobbing process precision.And by the setting of the first foxy 18 and first chute 19, regulating block 5 sliding up and down in bellmouth 7 not only can be realized, regulating block 5 also can be avoided to depart from bellmouth 7 moving up and down in process; Also can carry out part location to regulating block 5 simultaneously, avoid it that circumference occurs in process and rotate with the fixation of impact to two tooth bases.

After manufacturing procedure terminates, outside driving arrangement is again utilized to be moved along the direction away from link 12 by motion bar 9, two projections 15 are slowly separated with two ball assemblies, in this process, 8, two ball in each group ball assembly slowly resets to low level and slides under the effect of the first elastic component, correspondingly, the position of regulating block 5 also starts to decline, and the spacing between two finished product gear hobbings reduces gradually, correspondingly, fastening dynamics between two finished product gear hobbings reduces gradually, manually can dismantle the gear hobbing of finished product fast, substantially increase the working (machining) efficiency of gear hobbing.

For ease of the installation of regulating block 5, preferably, described regulating block 5 comprises the operate portions 22 that is provided with described first chute 19 and is removably fixed with operate portions 22 and is positioned at the upper cover part 23 above operate portions 22.In the present embodiment, upper cover part 23 can be threaded with operate portions 22, during installation, first rotates upper cover part 23 and makes it depart from operate portions 22, then the first slippery fellow 18 inserted in it from the upper end of the first chute 19, then upper cover part 23 be installed in operate portions 22.

Also comprise jacking bar 1, described jacking bar 1 is slidably arranged in back shaft 2, and when finely tuning tooth base 4, the position of jacking bar 1 is configured to, and the direction that the end promotion motion bar 9 of jacking bar 1 moves along its orientation of its axis link 12 is moved.When finely tuning tooth base 4, outside driving arrangement is directly by power administration activities bar 9, particularly in the moment that driving arrangement starts, motion bar 9 is made to have larger initial momentum, the instantaneous translational speed of motion bar 9 is too fast, the eustasy frequency regulated is increased, the fine setting of tooth base 4 targetedly cannot be realized, the present embodiment arranges jacking bar 1 in back shaft 2, and end part interval one end distance of the end of jacking bar 1 distance motion bar 9, when external drive device start, after driving jacking bar 1 to travel a segment distance, the motion state of jacking bar 1 tends towards stability, namely jacking bar 1 is with at the uniform velocity state and motion bar 9 ends contact, and driven to appropriate station, the lifting of regulating block 5 is made to keep stable, and then more flexibly the fastening dynamics between two tooth bases 4 is regulated, ensure the machining accuracy of tooth base 4.

For improving sensitivity and the degree of accuracy of ball 8 pairs of regulating blocks 5 effects, further, the bottom of described regulating block 5 is circular arc, and in ball assembly described in each, two balls 8 all act on the middle part of regulating block 5 bottom.So, the setting of circular arc, can be convenient to ball 8 and act on regulating block 5 when sliding, and avoids the problem occurring skidding and transmission failure.And act on the middle part of regulating block 5 bottom, stepless action regulating block 5 can be convenient to, avoid regulating block 5 moving up and down in process the problem occurring jolting, tilting.

For realizing the telescopic moving of the relative bellmouth 7 of locating pin 17, preferably, also comprise the 3rd elastic component 24 be arranged in described back shaft 2 axial wall, described locating pin 17 is arranged in described bellmouth 7 by the 3rd elastic component 24.In the present embodiment, because the inwall of regulating block 5 with bellmouth 7 matches, thus, the cross-sectional width of regulating block 5 also radially successively decreases along back shaft 2, so, when regulating block 5 moves up and down in process, distance between it and the first slippery fellow 18 will certainly change, particularly, when regulating block 5 moves, the distance between regulating block 5 and the first slippery fellow 18 progressively reduces; When regulating block 5 moves down, the distance between regulating block 5 and the first slippery fellow 18 then progressively increases.By the setting of the 3rd elastic component 24, then step down by locating pin 17 or supply the first foxy 18 corresponding distances to meet the change in location relation between regulating block 5 and the first slippery fellow 18.

For realizing fixed disk 6 fixing in back shaft 2, preferably, described link 12 being provided with top board 11, top board 11 being fixed with for supporting the support tube 16 of described fixed disk 6 and acting on the second elastic component 10 of described movable disk 14.The setting of the second elastic component 10 can realize the Rapid reset to movable disk 14, so, two projections 15 can be made to depart from two ball assemblies fast, and then realizes the quick-detachment to finished product gear hobbing.In addition, the second elastic component 10 also can avoid the excessive movement of movable disk 14, and then prevents the not in place or lifting of the lifting of regulating block 5 excessively.

Preferably, described first elastic component 13 and described second elastic component 10 are Compress Spring.Select Compress Spring can carry out multidirectional slowing down to the movement of movable disk 14 and the transmission of ball 8 respectively, avoid them when mobile, occur the problem of stress raisers because of discontinuity equalization.

Above content is the further description done the utility model in conjunction with concrete preferred embodiment, can not assert that detailed description of the invention of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.

Claims (7)

1. for the fixture of gear hobbing process, comprise link (12) and be fixed on link (12) and go up and the back shaft (2) of hollow setting, it is characterized in that: the outer wall of back shaft (2) has been threaded wheel flange (3), the sidewall of back shaft (2) offers two corresponding bellmouths (7) arranged, two bellmouths (7) along on the inwall of back shaft (2) circumference all correspondence be provided with two can two locating pins (17) of bellmouth (7) telescopic moving relatively, the free end of two locating pins (17) at each bellmouth (7) place is equipped with the first slippery fellow (18) that width is greater than locating pin (17), the regulating block (5) matched with bellmouth inwall is provided with in two bellmouths (7), the two side of two regulating blocks (5) is provided with the first chute (19) that the little inner chamber of opening is large, two first slippery fellows (18) at each bellmouth (7) place insert in two first chutes (19) respectively accordingly, fixed disk (6) is provided with in back shaft (2), the anchor ring of fixed disk (6) is provided with the second chute (20), also comprise two groups of corresponding with two regulating blocks (5) respectively ball assemblies, ball assembly comprises two and can act on the ball (8) of regulating block (5) bottom and be positioned at first elastic component (13) of the second chute (20), the two ends of the first elastic component (13) are connected with two balls (8) respectively, each ball (8) is provided with and adapts with the second chute (20) and to insert second slippery fellow (21) of the second chute (20), also slide in back shaft (2) and be provided with motion bar (9), the end of motion bar (9) is provided with movable disk (14), the end face of movable disk (14) just to link (12) is provided with two projections (15) that can coordinate with two ball assemblies, protruding (15) are in arc-shaped, and its arc length is axially successively decreased towards the direction of link (12) along back shaft (2).

2. the fixture for gear hobbing process according to claim 1, is characterized in that: described regulating block (5) comprises the operate portions (22) that is provided with described first chute (19) and is removably fixed with operate portions (22) and is positioned at the upper cover part (23) of operate portions (22) top.

3. the fixture for gear hobbing process according to claim 1, it is characterized in that: also comprise jacking bar (1), described jacking bar (1) is slidably arranged in back shaft (2), when finely tuning tooth base (4), the position of jacking bar (1) is configured to, and end promotion motion bar (9) of jacking bar (1) is mobile moves along the direction of its orientation of its axis link (12).

4. the fixture for gear hobbing process according to claim 1, is characterized in that: the bottom of described regulating block (5) is circular arc, and in ball assembly described in each, two balls all act on the middle part of regulating block (5) bottom.

5. the fixture for gear hobbing process according to claim 1, it is characterized in that: also comprise the 3rd elastic component (24) be arranged in described back shaft (2) axial wall, described locating pin (17) is arranged in described bellmouth (7) by the 3rd elastic component (24).

6. according to the fixture for gear hobbing process in claim 1 ~ 5 described in any one, it is characterized in that: described link (12) is provided with top board (11), top board (11) is fixed with the support tube (16) for supporting described fixed disk (6) and acts on second elastic component (10) of described movable disk (14).

7. the fixture for gear hobbing process according to claim 6, is characterized in that: described first elastic component (13) and described second elastic component (10) are Compress Spring.