CN111761448B

CN111761448B - Gear hobbing machine

Info

Publication number: CN111761448B
Application number: CN202010599401.9A
Authority: CN
Inventors: 陈海君; 马永建
Original assignee: Zhejiang Sanhuan Gear Co ltd
Current assignee: Zhejiang Sanhuan Gear Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-05-04
Anticipated expiration: 2040-06-28
Also published as: CN111761448A

Abstract

The utility model relates to a gear hobbing machine, including the gear hobbing machine body, the gear hobbing machine body is equipped with the processing platform, the processing hobbing cutter, the gear hobbing machine body is equipped with trimming device, trimming device is including finishing the platform, the trimming wheel, finishing the platform is equipped with driving motor, finishing the platform is equipped with actuating mechanism, actuating mechanism includes cross axle universal joint, axis of rotation one, axis of rotation two, finishing the platform is equipped with the movable block, finishing the platform is equipped with the arc groove, locking device, finishing the platform is equipped with the adjustment scale bar, finishing the platform including sliding the platform, the platform rotates, sliding the platform is equipped with the motor that slides, the gear hobbing machine body is including feeding the platform, the cooling tube is established to the gear hobbing machine body. By arranging the trimming device, the gear hobbing machine can remove burrs on the wall of the tooth socket groove and improve the quality of the gear; the universal joint, the first rotating shaft and the second rotating shaft are arranged, so that the number of driving sources required is reduced, and the cost is reduced; through the arrangement of the moving block and the locking device, the gear hobbing machine can process tooth grooves with different sizes.

Description

Gear hobbing machine

Technical Field

The application relates to the technical field of gear machining, in particular to a gear hobbing machine.

Background

At present, a gear hobbing machine is the most widely applied machine tool in gear processing machines, and straight teeth and helical cylindrical gears, worm gears, chain wheels and the like can be machined on the gear hobbing machine. A gear processing machine for processing straight teeth, helical teeth, herringbone cylindrical gears and worm gears by a hob according to a generating method.

Chinese utility model patent that present grant bulletin number is CN207272340U discloses a gear hobbing machine, including the gear hobbing machine body, the gear hobbing machine body includes the workstation, sets up the fixed establishment who treats the gear that is used for on the workstation, fixed establishment includes the fixed block, runs through the fixed block and can establish on the hydraulic stem and with the fixed block tip conflict be used for the cover establish treat the fixed cover of gear, set up at the hydraulic stem tip and be used for will treating the gear and compress tightly the piece that compresses tightly on fixed cover.

In view of the above-mentioned related art, the inventor believes that there is a defect that burrs are generated at the periphery of a gear tooth groove during gear machining, and a hobbing machine cannot generally remove the burrs, resulting in poor quality of the gear at the generated place.

Disclosure of Invention

In order to remove the burr and improve gear quality, this application provides a gear hobbing machine.

The gear hobbing machine provided by the application adopts the following technical scheme:

the utility model provides a gear hobbing machine, includes the gear hobbing machine body, the gear hobbing machine body is equipped with the processing platform that is used for the fixed gear, is used for the processing hobbing cutter of gear, the gear hobbing machine body is equipped with the trimming device who is used for cleaing away the gear burr, trimming device is including finishing the platform, be used for scraping the finishing wheel that grinds to the burr, finishing wheel is equipped with two along vertical direction symmetry, finishing the platform is equipped with and is used for driving finishing wheel pivoted driving motor, two the relative side of finishing wheel is used for respectively pasting mutually with the both sides cell wall of tooth's socket, finishing wheel is located finishing the platform, finishing the platform is close to or keeps away from the processing platform by the drive arrangement drive that sets up on the gear hobbing machine body.

By adopting the technical scheme, the gear hobbing machine moves the trimming table through the driving device by arranging the trimming grinding wheel and the trimming table, so that the trimming grinding wheel can be embedded into the tooth socket, burrs on the groove wall of the tooth socket are scraped and ground, the burrs are removed, and the quality of the gear is improved.

Preferably, the dressing table is provided with a driving mechanism for driving the dressing grinding wheel to rotate, the driving mechanism comprises a cross universal joint, a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are both rotatably connected with the dressing table, the first rotating shaft and the second rotating shaft are connected through the cross universal joint, the first rotating shaft and the second rotating shaft are respectively and fixedly connected with the two dressing grinding wheels in a coaxial mode, and the first rotating shaft is coaxially fixed with a motor shaft of the driving motor.

Through adopting above-mentioned technical scheme, thereby driving axis of rotation is rotated to the driving motor and is driven corresponding dressing wheel rotation, axis of rotation is rotated and is driven the universal joint of cross to rotate simultaneously, drive axis of rotation two and another dressing wheel rotation through the universal joint of cross, two dressing wheels are rotated by same driving motor drive, the quantity that has reduced required drive source has reduced the cost, the setting of universal joint of cross, the position restriction between the interlock of axis of rotation one, axis of rotation two has been overcome, make it rotate in obtuse angle, the synchronous rotation of the emery wheel that uses two slope symmetries of universal joint drive to set up is that technical personnel in the gear machining field can not think easily.

Preferably, the trimming platform is provided with a moving block in a sliding manner, the second rotating shaft is rotatably connected with the moving block through a bearing, and the trimming platform is provided with an arc groove for the moving block to slide and a locking device for fixedly connecting the moving block with the trimming platform.

By adopting the technical scheme, when personnel need to process gear tooth grooves with different sizes, the personnel can slide the movable block to correspondingly change the included angle between the first rotating shaft and the second rotating shaft, and then the locking device is used for fixing the movable block on the circular plate, so that the included angle between the first rotating shaft and the second rotating shaft is kept stable, and the first rotating shaft and the second rotating shaft are not easily influenced by external force to deviate.

Preferably, the locking device comprises a compression bolt and a compression nut, the arc groove penetrates through the trimming table, and the compression bolt sequentially penetrates through the moving block and the arc groove to be in threaded connection with the compression nut so as to compress and fix the moving block and the trimming table.

Through adopting above-mentioned technical scheme, sticising the bolt, sticising the setting of nut, on the removal of moving block removes the arbitrary position in arc groove, personnel all can sticiss fixedly through sticising the nut, sticising the bolt and mutually supporting to the moving block, can realize the fine adjustment to the moving block, and is comparatively convenient.

Preferably, the locking device comprises a locking motor and a turntable fixed on a motor shaft of the locking motor, the locking motor is a stepping motor, the moving block is fixedly connected with the turntable, and the motor shaft of the locking motor is coaxial with the arc groove.

Through adopting above-mentioned technical scheme, personnel's accessible locking motor drive carousel rotates to make the movable block slide on the arc groove, step motor's rotation is more stable, accurate, but personnel remote control step motor rotates the movable block, need not personnel manual rotation, and is comparatively convenient.

Preferably, the trimming platform is provided with adjusting scale strips which are distributed at intervals along the length direction of the arc groove.

Through adopting above-mentioned technical scheme, personnel can adjust the contained angle of pivot one, pivot two according to the instruction of adjustment scale bar, make the angle between them more accurate.

Preferably, the dressing table comprises a sliding table connected with the gear hobbing machine body in a sliding mode and a rotating table rotatably arranged on the sliding table, the dressing grinding wheel and the driving mechanism are both located on the rotating table, the sliding table is provided with a sliding motor used for driving the rotating table to rotate, and the sliding motor is a stepping motor.

Through adopting above-mentioned technical scheme, the revolving stage is rotated in the drive of sliding motor accessible to adjust the position angle of fixing the finishing wheel on the plectane, make it can be corresponding with gear teeth groove size, make two finishing wheel homoenergetic laminate mutually with gear teeth groove wall, thereby improve the quality of gear after finishing, the sliding motor is the personnel of being convenient for of step motor and controls the turned angle of revolving stage.

Preferably, the gear hobbing machine body comprises a feeding table which is connected to the gear hobbing machine body in a sliding mode, the sliding table is arranged on the feeding table in a sliding mode, the sliding direction of the feeding table is parallel to the axial direction of the gear, the sliding direction of the sliding table is perpendicular to the axial direction of the gear along the horizontal direction, and the sliding table and the feeding table are driven by a driving device to move.

By adopting the technical scheme, the sliding table can be driven by the driving device to enable the dressing grinding wheel to move along the direction vertical to the axial direction of the gear, so that the dressing grinding wheel is close to or far away from the gear, the driving device can push the feeding table to move along the axial direction of the gear, the surface of the dressing grinding wheel can slide along the length direction of the gear groove, and burrs on the groove wall of the gear groove are ground.

Preferably, the gear hobbing machine body is provided with a cooling pipe for conveying cooling liquid, and a pipe orifice of the cooling pipe faces to a position where the trimming device is contacted with the gear.

By adopting the technical scheme, when the gear is machined by the hobbing cutter and the dressing grinding wheel, the cooling pipe can spray cooling liquid to the gear machining part to cool the gear, so that the gear is not easily damaged due to overhigh temperature, and the gear machining quality is improved.

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

by arranging the trimming device, the gear hobbing machine can remove burrs on the wall of the tooth socket groove and improve the quality of the gear;

by arranging the universal joint, the first rotating shaft and the second rotating shaft, the number of driving sources required is reduced, and the cost is reduced;

through the arrangement of the moving block and the locking device, the gear hobbing machine can process tooth grooves with different sizes.

Drawings

FIG. 1 is a perspective view of the first embodiment;

FIG. 2 is a schematic structural view of a dressing apparatus according to the first embodiment;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a schematic structural view of a turntable according to the first embodiment;

FIG. 5 is a schematic structural view of a turntable according to the second embodiment;

fig. 6 is a schematic structural view of a locking device of the second embodiment.

Description of reference numerals: 1. a gear hobbing machine body; 11. a feeding table; 12. a first driving device; 13. a second driving device; 14. a cooling tube; 2. a processing table; 3. processing a hob; 4. a dressing device; 41. trimming the platform; 411. a sliding table; 412. a rotating table; 413. a slip motor; 42. trimming a grinding wheel; 43. a drive motor; 44. a circular plate; 441. a moving block; 45. a locking device; 451. pressing the bolt; 452. pressing the nut; 453. locking the motor; 454. a turntable; 455. adjusting the scale bar; 46. an arc groove; 5. a drive mechanism; 51. a cross-pin universal joint; 52. rotating a first shaft; 53. and a second rotating shaft.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The application discloses gear hobbing machine for deburring improves gear quality.

The first embodiment is as follows:

referring to fig. 1 and 2, the gear hobbing machine comprises a gear hobbing machine body 1, wherein the gear hobbing machine body 1 is provided with a processing table 2 for fixing a gear and a processing hob 3 for the gear, the processing hob 3 is driven by a power mechanism inside the gear hobbing machine body 1 to process the gear placed on the processing table 2, the gear is fixed on the processing table 2 in a pressing and fixing mode, the gear can synchronously rotate along with the processing table 2, the circumferential side wall of the gear protrudes out of the side wall of the processing table 2, and the processing table 2 is driven by a power device inside the gear hobbing machine body 1 to rotate.

Gear hobbing machine body 1 is equipped with trimming device 4 that is used for cleaing away the gear burr, trimming device 4, processing hobbing cutter 3 is located the both sides of gear respectively, trimming device 4 is including dressing table 41, a dressing wheel 42 that is used for scraping and grinding the burr, the slope of dressing wheel 42 sets up, dressing wheel 42 is equipped with two along vertical direction symmetry, dressing table 41 sets firmly and is used for driving dressing wheel 42 pivoted driving motor 43, two both sides face that dressing wheel 42 carried on the back mutually are used for pasting mutually with the both sides cell wall of tooth's socket respectively, dressing wheel 42 is located dressing table 41, dressing table 41 is close to or keeps away from processing platform 2 by the drive arrangement drive that sets up on gear hobbing machine body 1. Through setting up the dressing grinding wheel 42, this gear hobbing machine moves dressing table 41 through drive arrangement, can make dressing grinding wheel 42 imbed in the tooth's socket, scrapes the burr on the tooth's socket cell wall and grinds, gets rid of the burr, improves the quality of gear.

The trimming table 41 comprises a sliding table 411 in sliding connection with the hobbing machine body 1 and a rotating table 41 rotatably arranged on the sliding table 411, the hobbing machine body 1 comprises a feeding table 11 in sliding connection with the hobbing machine body 1, the sliding table 411 is slidably arranged on the feeding table 11, the sliding direction of the sliding table 411 is perpendicular to the axial direction of a gear along the horizontal direction, the sliding direction of the feeding table 11 is parallel to the axial direction of the gear, the driving device comprises a first driving device arranged on the hobbing machine body 1 and a second driving device arranged on the feeding table 11, the first driving device and the second driving device are both electric cylinders, the feeding table 11 is driven to move by the first driving device, and the sliding table 411 is driven to move by the second driving device.

The gear hobbing machine body 1 is provided with a cooling pipe 14 for conveying cooling liquid, the pipe orifice of the cooling pipe 14 faces the contact position of the trimming device 4 and the gear, the cooling pipe 14 is communicated with an oil pump inside the gear hobbing machine to convey the cooling liquid, and the machining position of the gear can be cooled when a gear hobbing cutter and a trimming grinding wheel 42 are used for machining the gear, so that the gear is not easily damaged due to overhigh temperature, and the gear machining quality is improved.

Referring to fig. 2 and 3, the dressing table 41 is provided with a driving mechanism 5 for driving the dressing grinding wheel 42 to rotate, the driving mechanism 5 comprises a universal joint 51, a first rotating shaft 52 and a second rotating shaft 53, the circular plate 44 protrudes from the end of the dressing table 41, the first rotating shaft 52 and the second rotating shaft 53 are both rotatably connected to the circular plate 44, the first rotating shaft 52 and the second rotating shaft 53 are connected through the universal joint 51, the first rotating shaft 52 and the second rotating shaft 53 are respectively and fixedly connected with the two dressing grinding wheels 42 coaxially, and the first rotating shaft 52 and a motor shaft of the driving motor 43 are coaxially fixed.

The driving motor 43 rotates to drive the first rotating shaft 52 to rotate so as to drive the corresponding dressing grinding wheel 42 to rotate, the first rotating shaft 52 rotates to drive the cross shaft universal joint 51 to rotate at the same time, the second rotating shaft 53 and the other dressing grinding wheel 42 are driven to rotate through the cross shaft universal joint 51, the two dressing grinding wheels 42 are driven to rotate by the same driving motor 43, the number of required driving sources is reduced, the cost is reduced, the arrangement of the cross shaft universal joint 51 overcomes the position and angle limitation between the linkage between the first rotating shaft 52 and the second rotating shaft 53, the rotation can be carried out in an obtuse angle, and the cross shaft universal joint 51 is used for driving two grinding wheels which are obliquely and symmetrically arranged to synchronously rotate, which is not easy for technical personnel in the field of gear machining.

Referring to fig. 3 and 4, the circular plate 44 is provided with a moving block 441, the second rotating shaft 53 is rotatably connected with the moving block 441 through a bearing, the circular plate 44 is provided with an arc groove 46 for sliding the moving block 441, and a locking device 45 for fixedly connecting the moving block 441 with the trimming table 41, the arc groove 46 penetrates through the circular arc plate along the thickness direction of the circular plate 44, the axial direction of the arc groove 46 is coaxial with the axial direction of the circular plate 44, the sliding direction of the moving block 441 is along the length direction of the arc groove 46, when a person needs to process gear tooth grooves with different sizes, the person can correspondingly change the included angle between the first rotating shaft 52 and the second rotating shaft 53 by sliding the moving block 441, and then the moving block 441 is fixed on the circular plate 44 by using the locking device 45, so that the included angle between the first rotating shaft 52 and the second rotating shaft 53. The trimming table 41 is provided with the adjusting scale strips 455, the adjusting scale strips 455 are provided with a plurality of channels, the plurality of adjusting scale strips 455 are distributed at intervals along the length direction of the arc groove 46, and a person can adjust the included angle between the first rotating shaft and the second rotating shaft according to the indication of the adjusting scale strips 455, so that the included angle between the first rotating shaft and the second rotating shaft is more accurate.

Locking device 45 is including sticising bolt 451, sticising nut 452, sticising bolt 451 passes the movable block 441 in proper order, arc groove 46 and sticising nut 452 threaded connection, the width size that sticising nut 452 is greater than the width of arc groove 46, sticising nut 452 and the disk offset from the lateral wall of movable block 441, sticising fixed movable block 441 and finishing platform 41, sticising bolt 451, the setting of sticising nut 452, on movable block 441 moves the arbitrary position of arc groove 46, personnel all can sticiss fixedly through sticising nut 452, sticising bolt 451 mutually supports movable block 441, can realize the fine adjustment to movable block 441, and is convenient.

The dressing grinding wheel 42 and the driving mechanism 5 are both positioned on the rotating table 412, the sliding table 411 is provided with a sliding motor 413 for driving the rotating table 412 to rotate, the sliding motor 413 is a stepping motor, the sliding table 411 is provided with a worm, the sliding motor is coaxially fixed with the worm, the rotating table 412 is fan-shaped, the outer surface of the rotating table 412 is provided with a helical tooth groove for meshing with the worm, the sliding motor can drive the worm to rotate through driving the worm, so that the rotating table 412 rotates, the position angle of the dressing grinding wheel 42 fixed on the circular plate 44 is adjusted to be corresponding to the size of the tooth groove of the gear, two dressing grinding wheels 42 can be attached to the tooth groove wall of the gear, and the quality of the dressed gear is improved.

The implementation principle of the embodiment is as follows: when the tooth socket machined by the machined hob 3 moves to one side of the trimming device 4, the machining table 2 stops moving, the sliding table 411 is driven by the driving device II to move towards the gear tooth socket, two opposite side surfaces of the two trimming grinding wheels 42 are attached to two side groove walls of the tooth socket, the driving motor 43 rotates to drive the rotating shaft I to rotate, the rotating shaft I drives the rotating shaft II to rotate through the universal joint 51, so that the two symmetrically distributed trimming grinding wheels 42 are driven to rotate, the groove walls of the tooth socket are trimmed, and after the trimming grinding wheels 42 finish trimming one tooth wall of the tooth socket, a person can drive the feeding table 11 to move through the driving device I to enable the trimming grinding wheels 42 to gradually move along the length direction of the tooth socket, and the deburring of the tooth wall of the tooth socket is finished.

Example two:

referring to fig. 5 and 6, the difference between the second embodiment and the first embodiment is that: locking device 45 includes locking motor 453, fix the carousel 454 in locking motor 453 motor shaft, carousel 454 rotates with plectane 44 to be connected, locking motor 453 and plectane 44 fixed connection, locking motor 453 is located plectane 44 and deviates from one side of axis of rotation 52, locking motor 453 is step motor, step motor has self-locking function, movable block 441 and carousel 454 fixed connection, locking motor 453's motor shaft is coaxial with arc groove 46, personnel's accessible locking motor 453 drives carousel 454 and rotates, thereby make movable block 441 slide on arc groove 46, step motor's rotation is more stable, it is accurate, personnel can remote control step motor rotate movable block 441, need not personnel's manual rotation, it is comparatively convenient.

The second embodiment has the following implementation principle: by arranging the locking motor 453, a person can control the locking motor 453 to drive the rotary table 454 to rotate, so that the moving block 441 is driven to slide, and the included angle between the first rotating shaft 52 and the second rotating shaft 53 is adjusted and automatically locked.

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 gear hobbing machine, includes gear hobbing machine body (1), gear hobbing machine body (1) is equipped with processing platform (2) that are used for the fixed gear, is used for processing hobbing cutter (3) of gear, its characterized in that: the gear hobbing machine comprises a gear hobbing machine body (1), wherein the gear hobbing machine body (1) is provided with a trimming device (4) used for removing gear burrs, the trimming device (4) comprises a trimming table (41) and two trimming grinding wheels (42) used for scraping and grinding the burrs, the trimming grinding wheels (42) are symmetrically arranged along the vertical direction, the trimming table (41) is provided with a driving motor (43) used for driving the trimming grinding wheels (42) to rotate, the opposite side surfaces of the two trimming grinding wheels (42) are respectively used for being attached to the groove walls on the two sides of a tooth groove, the trimming grinding wheels (42) are positioned on the trimming table (41), and the trimming table (41) is driven by a driving device arranged on the gear hobbing machine body (1) to be close to or far away from a machining table (2);

the trimming platform (41) is provided with a driving mechanism (5) for driving a trimming grinding wheel (42) to rotate, the driving mechanism (5) comprises a cross shaft universal joint (51), a first rotating shaft (52) and a second rotating shaft (53), the first rotating shaft (52) and the second rotating shaft (53) are both rotatably connected with the trimming platform (41), the first rotating shaft (52) and the second rotating shaft (53) are connected through the cross shaft universal joint (51), the first rotating shaft (52) and the second rotating shaft (53) are respectively and fixedly connected with the two trimming grinding wheels (42) in a coaxial mode, and the first rotating shaft (52) and a motor shaft of a driving motor (43) are coaxially fixed;

the trimming platform (41) is provided with a moving block (441) in a sliding mode, the second rotating shaft (53) is rotatably connected with the moving block (441) through a bearing, and the trimming platform (41) is provided with an arc groove (46) for the moving block (441) to slide and a locking device (45) for fixedly connecting the moving block (441) with the trimming platform (41).

2. A gear hobbing machine as claimed in claim 1, characterized in that: the locking device (45) comprises a pressing bolt (451) and a pressing nut (452), the arc groove (46) penetrates through the trimming table (41), the pressing bolt (451) sequentially penetrates through the moving block (441), the arc groove (46) and the pressing nut (452) to be in threaded connection, and the moving block (441) and the trimming table (41) are pressed and fixed.

3. A gear hobbing machine as claimed in claim 1, characterized in that: the locking device (45) comprises a locking motor (453) and a rotary table (454) fixed on the motor shaft of the locking motor (453), the locking motor (453) is a stepping motor, the moving block (441) is fixedly connected with the rotary table (454), and the motor shaft of the locking motor (453) is coaxial with the arc groove (46).

4. A gear hobbing machine as claimed in claim 2, characterized in that: the trimming platform (41) is provided with adjusting scale strips (455), and the adjusting scale strips (455) are distributed at intervals along the length direction of the arc groove (46).

5. A gear hobbing machine as claimed in claim 4, characterized in that: the trimming platform (41) comprises a sliding platform (411) connected with the gear hobbing machine body (1) in a sliding mode and a rotating platform (412) rotatably arranged on the sliding platform (411), the trimming grinding wheel (42) and the driving mechanism (5) are both located on the rotating platform (412), the sliding platform (411) is provided with a sliding motor (413) used for driving the rotating platform (412) to rotate, and the sliding motor (413) is a stepping motor.

6. A gear hobbing machine as claimed in claim 5, characterized in that: the gear hobbing machine comprises a gear hobbing machine body (1) and is characterized in that the gear hobbing machine body comprises a feeding table (11) which is connected onto the gear hobbing machine body in a sliding mode, a sliding table (411) is arranged on the feeding table (11) in a sliding mode, the sliding direction of the feeding table (11) is parallel to the axial direction of a gear, the sliding direction of the sliding table (411) is perpendicular to the axial direction of the gear along the horizontal direction, and the sliding table (411) and the feeding table (11) are driven to move by a driving device.

7. A gear hobbing machine as claimed in claim 1, characterized in that: the gear hobbing machine body (1) is provided with a cooling pipe (14) used for conveying cooling liquid, and the pipe orifice of the cooling pipe (14) faces the contact position of the trimming device (4) and the gear.