CN211708292U

CN211708292U - Gear clamping tool of gear hobbing machine

Info

Publication number: CN211708292U
Application number: CN201922031972.8U
Authority: CN
Inventors: 章柯波
Original assignee: Zhejiang Chuanyi Machinery Co ltd
Current assignee: Zhejiang Chuanyi Machinery Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-10-20
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a gear centre gripping frock of gear hobbing machine, including last frame, lower frame and connecting rod, the one end of going up the frame bottom has set firmly smooth bucket, be provided with the connecting rod in the smooth bucket, the connecting rod sets firmly frame top under, just recess one has been seted up at the frame top down, recess one bottom has set firmly cylinder one, logical groove has been seted up on the connecting rod, it has set firmly grip slipper one to go up the frame below, the grip slipper below is equipped with rotator one, rotator one below is equipped with the centering axle, the top of frame has set firmly grip slipper two down, the top of grip slipper two is equipped with rotator two, the top of rotator two is equipped with draw-in groove one, three recess two has been seted up on the draw-in groove inner wall, it is three all be provided with cylinder two in the recess two. The utility model discloses it is rational in infrastructure, have quick centering, advantage that the finished product precision is high.

Description

Gear clamping tool of gear hobbing machine

Technical Field

The utility model relates to a gear hobbing machine technical field, in particular to gear clamping frock of gear hobbing machine.

Background

The hobbing machine is one of the most widely used gear cutting machines, and can cut straight teeth, helical cylindrical gears, worm gears, chain wheels, etc. A gear processing machine for processing straight teeth, helical teeth, herringbone cylindrical gears and worm gears by a hob according to a generating method. When various workpieces with special tooth shapes, such as splines, chain wheels and the like, are machined, a clamping tool is needed for fixing the workpieces.

Chinese patent No. CN201821484489.4 discloses a clamping device for a fixed workpiece spindle for a gear hobbing machine, which comprises a gear hobbing machine, wherein the top of the gear hobbing machine is fixedly connected with a workbench, the top of the workbench is fixedly connected with a sleeve, the workpiece spindle is arranged inside the sleeve, and a positioning groove is formed in the surface of the workpiece spindle. The utility model discloses a through setting up the gear hobbing machine, a workbench, the sleeve, the work piece mandrel, the constant head tank, the slide bar, the lifter plate, the swash plate, the movable plate, the sliding sleeve, the slide bar, the spliced pole, the fly leaf, reference column and bracing piece, it is mostly to use the thread tightening mode to have solved current clamping device, need constantly rotatory thread bush just can press from both sides it and press from both sides the fastening, the problem of a large amount of time has been wasted, this clamping device of gear hobbing machine fixed work piece mandrel, compare with current clamping device, possess the fixed advantage of quick clamp, clamping device's practicality has been improved, user's use is convenient for.

The method has the disadvantages that the addendum circle of the workpiece needs to be corrected, the rotating speed of the workpiece is low during processing, the production and the processing are slow, the correction time is long, the efficiency is low, and the precision of a processed finished product cannot be ensured. In view of the above problems, a solution is proposed as follows.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gear clamping frock of gear hobbing machine has quick centering, advantage that the finished product precision is high.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a gear clamping tool of a gear hobbing machine comprises an upper machine base, a lower machine base and a connecting rod, wherein a sliding barrel is fixedly arranged at one end of the bottom of the upper machine base, the connecting rod is arranged in the sliding barrel and is in sliding fit with the connecting rod, the connecting rod is fixedly arranged at the top of the lower machine base, a first groove is formed in the top of the lower machine base, a first air cylinder is fixedly arranged at the bottom of the first groove, a first through groove is formed in the connecting rod, a piston rod of the first air cylinder penetrates through the through groove of the connecting rod and is fixedly connected with the sliding barrel, a first clamping seat is fixedly arranged below the upper machine base, a first rotating body is arranged below the first clamping seat and is in rotating fit with the first clamping seat, a centering shaft is arranged below the first rotating body and is detachably connected with the first rotating body, a second clamping seat is fixedly arranged above the lower machine base, and a second rotating body is arranged, and the second rotating body is in running fit with the second clamping seat, the top of the second rotating body is provided with a first clamping groove, the inner wall of the first clamping groove is provided with a second three groove, the second groove is internally provided with a second air cylinder, and the second air cylinder is fixedly connected with the bottom of the first clamping groove.

By adopting the technical scheme, when a workpiece is required to be clamped, a user firstly opens the first air cylinder, the piston rod of the first air cylinder extends to drive the sliding barrel fixedly arranged with the first air cylinder to move upwards, the sliding barrel moves upwards to drive the upper machine base fixedly arranged with the sliding barrel to move upwards, when the upper machine base and the lower machine base are separated by a certain distance, the bottom of the workpiece is placed into the second rotator to be preliminarily clamped, then the second air cylinder in the first clamping groove is opened, one end of the second air cylinder pushes the concave block until the concave block is tightly attached to the workpiece, then, the piston rod of the first air cylinder slowly retracts to drive the sliding barrel to slowly move downwards, the sliding barrel slowly moves downwards to drive the upper machine base to slowly descend, and finally, the machining is finished.

Preferably, the inner wall is provided with two sliding grooves, the outer wall of the connecting rod is fixedly provided with two sliding rails, and the two sliding rails are in sliding fit with the two sliding grooves.

By adopting the technical scheme, when the upper base moves upwards, the sliding rail is clamped inside the sliding groove, so that the upper base does not deviate when moving.

Preferably, a first rotating groove is formed in the bottom of the first clamping seat, a first rotating rod is arranged in the first rotating groove, the first rotating rod is T-shaped, a second rotating groove is formed in the top of the second clamping seat, a second rotating rod is arranged in the second rotating groove, and the second rotating rod is T-shaped.

By adopting the technical scheme, when one rotating body rotates, the first rotating rod is driven to rotate in the first rotating groove, and when the second rotating body rotates, the second rotating rod is driven to rotate in the second rotating groove, so that the workpiece is driven to rotate.

Preferably, a thread groove is formed in the bottom of the first rotating body, a thread is formed on the top surface of the centering shaft, and the centering shaft is in threaded fit with the thread groove.

By adopting the technical scheme, when the centering shaft is used for a long time, certain abrasion can be generated, a user rotates the centering shaft reversely, the centering shaft is rotated out through reverse threaded connection, and the user can replace the centering shaft conveniently.

Preferably, the bottom of the connecting rod is provided with a circle of damping pad, and the damping pad is attached to the lower machine base.

By adopting the technical scheme, when the sliding barrel is contacted with the top of the lower machine base, certain vibration can occur, and the shock pad plays a certain buffering role.

Preferably, the outer wall of the second clamping seat is fixedly provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are fixedly connected with the top of the lower machine base.

By adopting the technical scheme, the reinforcing rib enables the second clamping seat to be contacted with the lower base more firmly, so that the second rotating body rotates more stably, and the processing precision of products is improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a sectional view for the embodiment;

fig. 3 is a partially enlarged view of the area a in fig. 2.

Reference numerals: 1. an upper machine base; 2. a lower machine base; 3. a connecting rod; 4. sliding the barrel; 5. a first groove; 6. a first cylinder; 7. a first clamping seat; 8. a first rotating body; 9. a centering shaft; 10. a second clamping seat; 11. a second rotating body; 12. a first clamping groove; 13. a second groove; 14. a second air cylinder; 15. a concave block; 16. a chute; 17. a slide rail; 18. a first rotary groove; 19. a first rotating rod; 20. a second rotary groove; 21. a second rotating rod; 22. a shock pad; 23. reinforcing ribs; 24. a through groove.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. It should also be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and such modifications and decorations should also be regarded as the protection scope of the present invention.

A gear clamping tool of a gear hobbing machine is shown in figures 1 to 3 and comprises an upper machine base 1, a lower machine base 2 and a connecting rod 3, wherein a first groove 5 is formed in one end of the top of the lower machine base 2, and a first cylinder 6 is fixedly arranged at the bottom of the first groove 5. When a workpiece needs to be clamped, the lower machine base 2 is fixed with a machine tool, a user opens the first air cylinder 6, the sliding barrel 4 is fixedly arranged at one end of the bottom of the upper machine base 1, the piston rod is fixedly connected with one end, far away from the lower machine base 2, of the sliding barrel 4, the through groove 24 is formed in the bottom of the connecting rod 3, when the piston rod of the first air cylinder 6 extends to drive the sliding barrel 4 fixedly arranged with the first air cylinder to move upwards, and the sliding barrel 4 moves upwards to drive the upper machine base 1 fixedly arranged with the first air cylinder to move upwards.

Connecting rod 3 is fixed in the one end at 2 tops of frame down, and connecting rod 3 bottom has set firmly round shock pad 22, and shock pad 22 and the laminating of frame 2 down. When the sliding barrel 4 slowly descends to contact with the top of the lower machine base 2, certain vibration can occur, the shock absorption pad 22 plays a certain buffering role, and the sliding barrel 4 is prevented from frequently knocking the top of the lower machine base 2 to deform so as to influence the processing precision.

Two slide rails 17 are fixedly arranged on the outer wall of the connecting rod 3, and two slide grooves 16 matched with the slide rails 17 are arranged on the inner wall of the slide barrel 4. When the upper machine base 1 moves upwards, the upper machine base 1 moves upwards to drive the sliding barrel 4 to move upwards, and the upper machine base 1 cannot incline because the sliding rail 17 and the sliding strip are clamped mutually.

The lower part of the upper machine base 1 is fixedly provided with a first clamping base 7, a first rotating body 8 is arranged below the first clamping base 7, the bottom of the first clamping base 7 is provided with a first rotating groove 18, a first rotating rod 19 is arranged in the first rotating groove 18, the first rotating rod 19 is T-shaped, a second clamping base 10 is fixedly arranged above the lower machine base 2, a second rotating body 11 is arranged above the second clamping base 10, the top of the second clamping base 10 is provided with a second rotating groove 20, a second rotating rod 21 is arranged in the second rotating groove 20, and the second rotating rod 21 is T-shaped. When the first rotating body 8 rotates, the first rotating rod 19 is driven to rotate in the first rotating groove 18, and when the second rotating body 11 rotates, the second rotating rod 21 is driven to rotate in the second rotating groove 20.

The rotating body I8 is provided with the centering shaft 9 below, the top surface of the centering shaft 9 is provided with threads, the bottom of the rotating body I8 is provided with thread grooves, the threads of the centering shaft 9 are matched with the thread grooves, when the centering shaft 9 is used for a long time, certain abrasion is generated, a user rotates the centering shaft 9 in the reverse direction, the centering shaft 9 is rotated out through reverse threaded connection, and replacement of the user is facilitated.

The outer wall of the second clamping seat 10 is fixedly provided with a plurality of reinforcing ribs 23, and the plurality of reinforcing ribs 23 are fixedly connected with the top of the lower machine base 2. The second clamping seat 10 is contacted with the lower base more firmly by the reinforcing ribs 23, so that the second clamping seat 10 and the second rotating body 11 rotate more stably, and the processing precision of products is improved.

In actual operation, when a workpiece needs to be clamped, a user firstly opens the first air cylinder 6, a piston rod of the first air cylinder 6 extends to drive the sliding barrel 4 fixedly arranged with the first air cylinder to move upwards, the sliding barrel 4 moves upwards to drive the upper machine base 1 fixedly arranged with the sliding barrel to move upwards, when the upper machine base 1 and the lower machine base 2 are separated by a certain distance, the bottom of the workpiece is placed into the second rotating body 11 for primary clamping, then the second air cylinder 14 in the first clamping groove 12 is opened, and one end of the second air cylinder 14 pushes the concave block 15 until the concave block 15 is tightly attached to the surface of the lower bottom of the workpiece. And then, a piston rod of the first air cylinder 6 is slowly retracted to drive the sliding barrel 4 to slowly move downwards, the sliding barrel 4 slowly moves downwards to drive the upper machine base 1 to slowly descend, and finally, the machining is finished.

Claims

1. A gear clamping tool of a gear hobbing machine comprises an upper machine base (1), a lower machine base (2) and a connecting rod (3), and is characterized in that a sliding barrel (4) is fixedly arranged at one end of the bottom of the upper machine base (1), the connecting rod (3) is arranged in the sliding barrel (4), the sliding barrel (4) is in sliding fit with the connecting rod (3), the connecting rod (3) is fixedly arranged at the top of the lower machine base (2), a first groove (5) is formed in the top of the lower machine base (2), a first cylinder (6) is fixedly arranged at the bottom of the first groove (5), a through groove (24) is formed in the connecting rod (3), a piston rod of the first cylinder (6) penetrates through the through groove (24) of the connecting rod (3) and is fixedly connected with the sliding barrel (4), a first clamping base (7) is fixedly arranged below the upper machine base (1), a first rotating body of the clamping base is provided with a first rotating body (8, just rotator (8) and holder (7) normal running fit, rotator (8) below is equipped with centering axle (9), just centering axle (9) can dismantle with rotator (8) and be connected, the top of frame (2) has set firmly holder two (10) down, the top of holder two (10) is equipped with rotator two (11), just rotator two (11) and holder two (10) normal running fit, the top of rotator two (11) is equipped with draw-in groove one (12), three recess two (13) have been seted up on draw-in groove one (12) inner wall, and three all be provided with cylinder two (14) in recess two (13), and three cylinder two (14) all with draw-in groove one (12) bottom is fixed connection.

2. The gear clamping tool of the gear hobbing machine according to claim 1, characterized in that two sliding grooves (16) are formed in the inner wall, two sliding rails (17) are fixedly arranged on the outer wall of the connecting rod (3), and the two sliding rails (17) are in sliding fit with the two sliding grooves (16).

3. The gear clamping tool of the gear hobbing machine according to claim 1, characterized in that a first rotating groove (18) is formed in the bottom of the first clamping seat (7), a first rotating rod (19) is arranged in the first rotating groove (18), the first rotating rod (19) is T-shaped, a second rotating groove (20) is formed in the top of the second clamping seat (10), a second rotating rod (21) is arranged in the second rotating groove (20), and the second rotating rod (21) is T-shaped.

4. The gear clamping tool of the gear hobbing machine according to claim 1, characterized in that a thread groove is formed at the bottom of the first rotating body (8), the centering shaft (9) is provided with a thread on the top surface, and the centering shaft (9) is in thread fit with the thread groove.

5. The gear clamping tool of the gear hobbing machine according to claim 1, characterized in that a circle of shock pad (22) is arranged at the bottom of the connecting rod (3), and the shock pad (22) is attached to the lower base (2).

6. The gear clamping tool of the gear hobbing machine according to claim 1, characterized in that a plurality of reinforcing ribs (23) are fixedly arranged on the outer wall of the second clamping seat (10), and the plurality of reinforcing ribs (23) are fixedly connected with the top of the lower machine base (2).