CN218836349U

CN218836349U - Centering fixture for gear machining

Info

Publication number: CN218836349U
Application number: CN202223546783.2U
Authority: CN
Inventors: 江维斌
Original assignee: Zhejiang Changbo Machinery Co ltd
Current assignee: Zhejiang Changbo Machinery Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-11
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a gear machining is with centering fixture, include: the fixing base, first centre gripping subassembly and second centre gripping subassembly, first centre gripping subassembly rotates and installs in one side of fixing base, first centre gripping subassembly includes the drive carousel, decide guide block and motion bracer, the second centre gripping subassembly includes decides a set seat, internal stay clamping jaw and screw pin pole, guide rail groove has been seted up on the surface of deciding a set seat, decide guide block fixed mounting in the inboard in guide rail groove, motion bracer slidable mounting just is located the inboard in guide rail groove in the surface of deciding the guide block, the surface of drive carousel is equipped with a plurality of arc guide slots. The utility model discloses in, through setting up novel centre gripping motion subassembly, utilize the rotation transmission screw thread pin rod of drive carousel to carry out linear motion to utilize screw thread pin rod and the butt of interior bracing clamping jaw surface to face to one side to carry out interior bracing clamping jaw lever and twist reverse the butt that carries out a plurality of interior bracing clamping jaws and a plurality of motion bracers's synchronous outer expanding motion and carry out the gear inner circle, and realize gear centering operation, simple structure work efficiency is high.

Description

Centering fixture for gear machining

Technical Field

The utility model relates to a gear machining technical field specifically is a gear machining is with centering fixture.

Background

The combined clamp is a positioning clamp which is combined through all clamping and positioning structures so as to meet the requirement of machining of a specific workpiece, and in the process of machining of the automobile gearbox, high-precision machining needs to be carried out on the gearbox gear, so that the combined clamp for machining the automobile gearbox gear needs to be used so as to meet the requirement of machining, clamping and positioning of the gear.

But present automotive transmission gear machining all adopts ordinary anchor clamps to carry out the centre gripping to gear workpiece, ordinary anchor clamps are not convenient for carry out self-centering centre gripping to the gear, need confirm gear workpiece's centre of a circle position repeatedly when the centre gripping, the operation is wasted time and energy, and adopt ordinary anchor clamps to carry out lateral surface or medial surface centre gripping when gear workpiece centre gripping only can be single, thereby be not convenient for carry out centre gripping processing to gear inner circle or outer lane, and the centre gripping steadiness is relatively poor when adopting ordinary anchor clamps to gear workpiece centre gripping, easily produce great error in the production course of working. In view of the above, the present invention is to provide a centering jig for gear machining, which is improved in view of the conventional problems, to solve the problems and to achieve the object of solving the problems and improving the practical value by the technique.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art or the correlation technique.

Therefore, the utility model discloses the technical scheme who adopts does: a centering jig for gear machining, comprising: fixing base, first centre gripping subassembly and second centre gripping subassembly, first centre gripping subassembly rotates and installs in one side of fixing base, first centre gripping subassembly includes the drive carousel, decides guide block and motion kicking block, second centre gripping subassembly includes decides a set seat, internal stay clamping jaw and screw pin pole, the guide rail groove has been seted up on the surface of deciding a set seat, decide guide block fixed mounting in the inboard in guide rail groove, the motion kicking block slidable mounting in the surface of deciding the guide block and be located the inboard in guide rail groove, the surface of drive carousel is equipped with a plurality of arc guide slots, one side of motion kicking block is equipped with the pilot pin of cup jointing in arc guide slot inboard, the quantity of internal stay clamping jaw is a plurality of and calls the circumference evenly to arrange in the surface of deciding a set seat, the screw pin pole slides and cup joints the surface of deciding a set seat, the fixed surface of drive carousel installs the screw thread and cup joints the drive swivel nut in the screw pin pole outside, the one end of screw pin pole is equipped with the external expansion piece that internal stay clamping jaw surface looks butt.

The present invention may be further configured in a preferred embodiment as: one end of the inner supporting clamping jaw penetrates through the surface of the driving turntable and is movably connected with a sliding block, the sliding block is slidably mounted on the inner side of the fixing seat, and the two sides of the driving turntable are rotatably connected with the fixing seat and the inner side of the fixing seat relative to the fixed disk seat.

The present invention in a preferred embodiment can be further configured to: the quantity of deciding guide block and motion bracer is three and three motion bracer all is the radial direction in drive carousel surface and arranges, the arc guide slot is the arc wall structure, and the both ends of arc guide slot are different apart from the centre of a circle of drive carousel, the pilot pin slides and cup joints in the inboard of arc guide slot.

The present invention may be further configured in a preferred embodiment as: the surface of the inner supporting clamping jaw is provided with a rotating pin positioned on the surface of the fixed plate seat, the surface of the inner supporting clamping jaw is provided with a J-shaped sleeve groove sleeved outside the rotating pin, one end of the inner supporting clamping jaw is provided with a supporting hook, and the other end of the inner supporting clamping jaw is provided with an inclined supporting surface which is abutted to the surface of the outer expanding supporting block.

The present invention may be further configured in a preferred embodiment as: the inclined abutting surface is of an inclined surface structure, the outer expanding abutting block is of a conical structure, and the surface taper of the outer expanding abutting block is smaller than the inclination of the inclined abutting surface.

The present invention may be further configured in a preferred embodiment as: the outside of screw pin pole is equipped with the thread groove, the inboard of drive swivel nut is equipped with the protruding screw thread that matches with the thread groove.

The present invention may be further configured in a preferred embodiment as: the outside fixed mounting of drive carousel has the action bars, the action bars is arranged along the radial direction of drive carousel.

The utility model discloses the beneficial effect who gains does:

1. the utility model discloses in, through setting up novel centre gripping motion subassembly, utilize the rotation transmission screw thread pin rod of drive carousel to carry out linear motion to utilize screw thread pin rod and the butt of interior bracing clamping jaw surface to face to one side to carry out interior bracing clamping jaw lever and twist reverse the butt that carries out a plurality of interior bracing clamping jaws and a plurality of motion bracers's synchronous outer expanding motion and carry out the gear inner circle, and realize gear centering operation, simple structure work efficiency is high.

2. The utility model discloses in, through setting up first centre gripping subassembly and second centre gripping subassembly structure, the deflection motion of the single drive carousel of accessible, the synchronous drive internal stay clamping jaw deflects and expands the slip with the outer of motion bracer, utilizes the internal stay clamping jaw to carry out the internal expanding centre gripping of less inner circle gear, motion bracer great specification gear, is applicable to the gear of different inner circle diameters, improves this centering fixture's practicality.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is an exploded view of the clamping assembly according to an embodiment of the present invention;

fig. 3 is an exploded view of the driving turntable and the second clamping assembly according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a second clamping assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a first clamping assembly according to an embodiment of the present invention.

Reference numerals:

100. a fixed seat;

200. a first clamping assembly; 210. driving the turntable; 220. a guide block; 230. a motion brace block; 211. an arc guide groove; 212. driving the threaded sleeve; 231. a guide pin;

300. a second clamping assembly; 310. a fixed disk seat; 320. an inner supporting clamping jaw; 330. a threaded pin rod; 311. a guide rail groove; 321. an inclined butting surface; 331. a thread groove; 332. expanding a resisting block;

400. an operating lever.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

The following describes a centering fixture for gear machining according to some embodiments of the present invention with reference to the accompanying drawings.

With reference to fig. 1-5, the utility model provides a centering fixture for gear machining, include: the clamping device comprises a fixed seat 100, a first clamping assembly 200 and a second clamping assembly 300, wherein the first clamping assembly 200 is rotatably installed on one side of the fixed seat 100, the first clamping assembly 200 comprises a driving turntable 210, a fixed guide block 220 and a moving support block 230, the second clamping assembly 300 comprises a fixed disk seat 310, an inner support clamping jaw 320 and a threaded pin rod 330, a guide rail groove 311 is formed in the surface of the fixed disk seat 310, the fixed guide block 220 is fixedly installed on the inner side of the guide rail groove 311, the moving support block 230 is slidably installed on the surface of the fixed guide block 220 and located on the inner side of the guide rail groove 311, a plurality of arc guide grooves 211 are formed in the surface of the driving turntable 210, guide pins 231 sleeved on the inner sides of the arc guide grooves 211 are arranged on one side of the moving support block 230, the inner support clamping jaws 320 are arranged on the surface of the fixed disk seat 310 in a plurality of parallel and symmetrical circumferential directions, the threaded pin rod 330 is slidably sleeved on the surface of the fixed disk seat 310, a driving screw sleeve 212 in a threaded sleeve manner is fixedly installed on the surface of the driving turntable 210, and an outer expanding support block 332 abutted against the surface of the inner support clamping jaw 320 is arranged at one end of the threaded pin rod 330.

In this embodiment, one end of the inner supporting jaw 320 penetrates through the surface of the driving turntable 210 and is movably connected with a slider, the slider is slidably mounted on the inner side of the fixed base 100, and two sides of the driving turntable 210 are rotatably connected with the opposite inner sides of the fixed base 100 and the fixed base 310.

Specifically, the first clamping assembly 200 is fixed to the fixed base 100 by rotationally connecting the driving turntable 210 to the surface of the fixed base 100, the second clamping assembly 300 is connected to the fixed base 100 by sliding blocks at the end portions of the inner supporting clamping jaws 320, and the first clamping assembly 200 and the second clamping assembly 300 are fixed to the surface of the fixed base 100.

In this embodiment, the number of the fixed guide blocks 220 and the number of the moving support blocks 230 are three, and the three moving support blocks 230 are all arranged in the radial direction of the surface of the driving turntable 210, the arc guide groove 211 is in an arc groove structure, the distance between the two ends of the arc guide groove 211 and the center of the driving turntable 210 is unequal, and the guide pin 231 is slidably sleeved on the inner side of the arc guide groove 211.

Specifically, the driving turntable 210 can be manually rotated to rotate relative to the guide pin 231 through the arc guide groove 211, so that the movement supporting blocks 230 radially slide along the surface of the driving turntable 210 to eject, the inner ring of the large gear ring gear is abutted, and the three movement supporting blocks 230 synchronously move and abut, and automatic centering is realized.

In this embodiment, the surface of the inner supporting jaw 320 is provided with a rotating pin located on the surface of the positioning plate seat 310, the surface of the inner supporting jaw 320 is provided with a J-shaped sleeve groove sleeved outside the rotating pin, one end of the inner supporting jaw 320 is provided with a resisting hook, and the other end of the inner supporting jaw 320 is provided with an inclined resisting surface 321 which is in contact with the surface of the outer expanding resisting block 332.

In this embodiment, the inclined surface 321 is an inclined surface, the outward expanding block 332 is a tapered structure, and the surface taper of the outward expanding block 332 is smaller than the inclination of the inclined surface 321.

Specifically, the linear motion of the threaded pin rod 330 and the outward expanding supporting block 332 is in sliding abutting contact with the surface oblique supporting surface 321 of the inner supporting clamping jaw 320 to push one end of the oblique supporting surface 321 to perform outward expanding motion, and the inner supporting clamping jaw 320 is driven to move through friction, so that the J-shaped sleeve groove moves relative to the rotating pin surface, the abutting end of the inner supporting clamping jaw 320 and the synchronous outward expanding motion of the inner supporting clamping jaw 320 abut against the inner ring of the gear of the small gear ring, and automatic centering is realized.

In this embodiment, the threaded pin 330 is provided with a thread groove 331 on the outside and the drive nut 212 is provided with a male thread adapted to the thread groove 331 on the inside.

Specifically, the driving screw 212 and the threaded socket of the threaded pin rod 330 are used to convert the deflection kinetic energy of the driving turntable 210 into the linear sliding of the threaded pin rod 330 inside the fixed-plate base 310, so as to drive the inner-supporting clamping jaw 320 to move.

In this embodiment, an operation lever 400 is fixedly installed at an outer side of the driving dial 210, and the operation lever 400 is arranged in a radial direction of the driving dial 210.

Specifically, the operating lever 400 is used to increase the rotation torque of the driving dial 210, and the operating lever 400 is operated to make the driving dial 210 rotate more easily.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. The utility model provides a gear machining is with centering anchor clamps which characterized in that includes: a fixed seat (100), a first clamping component (200) and a second clamping component (300), the first clamping component (200) is rotatably arranged at one side of the fixed seat (100), the first clamping assembly (200) comprises a driving turntable (210), a guide block (220) and a motion supporting block (230), the second clamping component (300) comprises a fixed disk seat (310), an inner supporting clamping jaw (320) and a threaded pin rod (330), the surface of the fixed disk seat (310) is provided with a guide rail groove (311), the fixed guide block (220) is fixedly arranged at the inner side of the guide rail groove (311), the motion supporting block (230) is arranged on the surface of the fixed guide block (220) in a sliding way and is positioned at the inner side of the guide rail groove (311), the surface of the driving turntable (210) is provided with a plurality of arc guide grooves (211), one side of the motion supporting block (230) is provided with a guide pin (231) sleeved on the inner side of the arc guide groove (211), the number of the internal supporting clamping jaws (320) is a plurality and is uniformly distributed on the surface of the fixed disc seat (310) in the circumferential direction, the threaded pin rod (330) is sleeved on the surface of the fixed disk seat (310) in a sliding way, the surface of the driving turntable (210) is fixedly provided with a driving threaded sleeve (212) which is sleeved outside the threaded pin rod (330) in a threaded manner, one end of the threaded pin rod (330) is provided with an external expansion abutting block (332) abutting against the surface of the internal support clamping jaw (320).

2. The centering fixture for gear machining according to claim 1, wherein one end of the inner supporting jaw (320) penetrates through the surface of the driving turntable (210) and is movably connected with a sliding block, the sliding block is slidably mounted on the inner side of the fixed base (100), and two sides of the driving turntable (210) are rotatably connected with the opposite inner sides of the fixed base (100) and the fixed base (310).

3. The centering fixture for gear machining according to claim 1, wherein the number of the guide blocks (220) and the number of the motion supporting blocks (230) are three, the three motion supporting blocks (230) are all arranged in a radial direction on the surface of the driving turntable (210), the arc guide groove (211) is in an arc groove structure, the distance between the two ends of the arc guide groove (211) and the center of the driving turntable (210) is unequal, and the guide pin (231) is slidably sleeved on the inner side of the arc guide groove (211).

4. The centering fixture for gear machining according to claim 1, wherein a rotating pin located on the surface of the positioning plate seat (310) is arranged on the surface of the inner supporting clamping jaw (320), a J-shaped sleeve groove sleeved outside the rotating pin is arranged on the surface of the inner supporting clamping jaw (320), a resisting hook is arranged at one end of the inner supporting clamping jaw (320), and an inclined resisting surface (321) abutted against the surface of the outer expanding resisting block (332) is arranged at the other end of the inner supporting clamping jaw (320).

5. The centering fixture for gear processing according to claim 4, wherein the inclined abutting surface (321) is of an inclined surface structure, the expanding abutting block (332) is of a conical structure, and the surface taper of the expanding abutting block (332) is smaller than the inclination of the inclined abutting surface (321).

6. The centering fixture for gear processing according to claim 1, wherein the threaded pin rod (330) is provided with a thread groove (331) at an outer side thereof, and the driving nut (212) is provided with a male thread adapted to the thread groove (331) at an inner side thereof.

7. The centering fixture for gear processing according to claim 1, wherein an operating rod (400) is fixedly mounted on the outer side of the driving turntable (210), and the operating rod (400) is arranged along the radial direction of the driving turntable (210).