CN212552084U

CN212552084U - Equipment for chamfering double ends of pin shaft

Info

Publication number: CN212552084U
Application number: CN202021470871.7U
Authority: CN
Inventors: 王勤; 肖渊博
Original assignee: SAIC Iveco Hongyan Commercial Vehicle Co Ltd
Current assignee: Saic Hongyan Axle Chongqing Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-02-19
Anticipated expiration: 2030-07-23

Abstract

The utility model provides a device for processing double-end chamfer of a pin shaft, which comprises a first clamp and a second clamp; a first semicircular groove is formed in the left end face of the first clamp, a second semicircular groove is formed in the right end face of the second clamp, and when the first clamp is in contact with the second clamp, the first semicircular groove and the second semicircular groove enclose a cylindrical area; the improvement lies in that: an elastic telescopic mechanism is arranged in the second semicircular groove. The utility model has the beneficial technical effects that: the utility model provides an equipment for round pin axle double-end chamfer processing, this scheme can solve the unable problem that breaks away from anchor clamps of round pin axle.

Description

Equipment for chamfering double ends of pin shaft

Technical Field

The utility model relates to a round pin axle chamfer processing technique especially relates to an equipment for round pin axle double-end chamfer processing.

Background

The pin shaft is generally obtained by chamfering two ends of a cylindrical blank, and in order to improve the processing efficiency, chamfering processing is generally carried out on the two ends of the pin shaft at the same time; the complete processing process of the single pin shaft comprises the following steps: a bin is arranged behind the first clamp, a pneumatic finger is arranged above the first clamp, a blank is placed in the bin, and two chamfering devices with rotary cutters are arranged on two sides of the first clamp respectively; firstly, the first clamp and the second clamp are in a separated state, and the chamfering device is also at an outward maximum stroke position; after the equipment is started, the two ends of a blank are clamped by a pneumatic finger, then the blank is conveyed between a first clamp and a second clamp, the first clamp moves towards the first clamp, when the first clamp moves in place, the first semicircular groove and the second semicircular groove clamp the blank tightly, then two chamfering devices move inwards to perform chamfering operation, after the chamfering operation is completed, the two chamfering devices move outwards again, then the second clamp moves backwards, the first semicircular groove and the second semicircular groove are separated, and a pin shaft falls into a material receiving device below; there are problems in that: the common pin shaft does not need finish machining, the peripheral surface of the pin shaft possibly has the problems of out-of-round, large diameter and the like, and the pin shaft can be clamped in the second semicircular groove when the second clamp supports the pin shaft with non-compliant size on the first clamp due to the fact that the second clamp moves a part, so that the pin shaft cannot fall down after the second clamp is separated.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the background technology, the utility model provides a device for chamfering double ends of a pin shaft, which comprises a first clamp and a second clamp; the first clamp is fixed in position, and the second clamp is arranged on the left side of the first clamp; the second clamp can reciprocate along the direction vertical to the left end surface of the first clamp; when the second clamp moves rightwards to the maximum stroke position, the left end face of the first clamp is in contact with the right end face of the second clamp; a first semicircular groove is formed in the left end face of the first clamp, a second semicircular groove is formed in the right end face of the second clamp, when the first clamp is in contact with the second clamp, the first semicircular groove and the second semicircular groove enclose a cylindrical area, and the axial direction of the cylindrical area is parallel to the horizontal plane; when the second clamp moves to the maximum stroke position leftwards, the distance between the left end face of the first clamp and the right end face of the second clamp is larger than the diameter of the cylindrical area; the improvement lies in that: the bottom of the second semicircular groove is provided with a mounting hole, an elastic telescopic mechanism is arranged in the mounting hole, the inner end of the elastic telescopic mechanism is fixedly connected with the mounting hole, and the outer end of the elastic telescopic mechanism is a telescopic end; when no external force acts, the outer end of the elastic telescopic mechanism protrudes out of the inner wall of the second semicircular groove, the telescopic direction of the elastic telescopic mechanism is perpendicular to the right end face of the second clamp, and when the first semicircular groove and the second semicircular groove hold the pin shaft tightly, the outer end of the elastic telescopic mechanism retracts into the mounting hole.

The processing process of the utility model is the same as the prior art introduced in the background technology, and the improvement point of the utility model is that an elastic telescopic mechanism is arranged on the second clamp; in particular, the elastic telescopic mechanism acts as follows: when the first clamp and the second clamp are separated, no external force acts on the elastic telescopic mechanism, the outer end of the elastic telescopic mechanism protrudes out of the inner wall of the second semicircular groove, when the first clamp and the second clamp hold the pin shaft tightly, the outer end of the elastic telescopic mechanism is pushed back into the mounting hole by the pin shaft, when the first clamp and the second clamp are separated again, the pin shaft is pushed out by the elastic telescopic mechanism due to the loss of the support of the first clamp, so that the pin shaft is separated from the second clamp, and the problem that the pin shaft with an unqualified size is clamped on the second clamp and cannot fall off can be solved;

preferably, the elastic telescopic mechanism consists of a sliding sleeve, a connecting column, a return spring and a bayonet lock; the connecting column is arranged in the mounting hole, a radial through hole is formed in the inner end of the connecting column, a connecting hole matched with the radial through hole is formed in the inner wall of the mounting hole, and the clamping pin is arranged in the radial through hole and the connecting hole; the inner end face of the sliding sleeve is provided with a blind hole matched with the connecting column, the outer end of the connecting column is sleeved in the blind hole, the outer peripheral surface of the connecting column is in clearance fit with the hole wall of the blind hole, and the outer peripheral surface of the sliding sleeve is in clearance fit with the inner wall of the mounting hole; the reset spring is sleeved on the connecting column, the inner end of the reset spring is contacted with the bayonet lock, and the outer end of the reset spring is contacted with the inner end surface of the sliding sleeve; when the pin shaft is tightly held by the first clamp and the second clamp, a gap is reserved between the bottom of the blind hole and the outer end face of the connecting column.

The utility model has the beneficial technical effects that: the utility model provides an equipment for round pin axle double-end chamfer processing, this scheme can solve the unable problem that breaks away from anchor clamps of round pin axle.

Drawings

FIG. 1 is a schematic cross-sectional structure diagram of a first clamp and a second clamp;

FIG. 2 is a schematic cross-sectional view of a first clamp and a second clamp;

FIG. 3 is a schematic cross-sectional view of the elastic telescopic mechanism;

the names corresponding to each mark in the figure are respectively: the clamp comprises a first clamp 1, a second clamp 2, a sliding sleeve 3, a connecting column 4, a return spring 5, a bayonet 6 and a pin shaft 7.

Detailed Description

A device for processing double-end chamfer angles of a pin shaft comprises a first clamp 1 and a second clamp 2; the position of the first clamp 1 is fixed, and the second clamp 2 is arranged on the left side of the first clamp 1; the second clamp 2 can reciprocate along the direction vertical to the left end face of the first clamp 1; when the second clamp 2 moves rightwards to the maximum stroke position, the left end face of the first clamp 1 is in contact with the right end face of the second clamp 2; a first semicircular groove is formed in the left end face of the first clamp 1, a second semicircular groove is formed in the right end face of the second clamp 2, when the first clamp 1 is in contact with the second clamp 2, the first semicircular groove and the second semicircular groove enclose a cylindrical area, and the axial direction of the cylindrical area is parallel to the horizontal plane; when the second clamp 2 moves leftwards to the maximum stroke position, the distance between the left end face of the first clamp 1 and the right end face of the second clamp 2 is larger than the diameter of the cylindrical area;

the improvement lies in that: the bottom of the second semicircular groove is provided with a mounting hole, an elastic telescopic mechanism is arranged in the mounting hole, the inner end of the elastic telescopic mechanism is fixedly connected with the mounting hole, and the outer end of the elastic telescopic mechanism is a telescopic end; when no external force acts, the outer end of the elastic telescopic mechanism protrudes out of the inner wall of the second semicircular groove, the telescopic direction of the elastic telescopic mechanism is perpendicular to the right end face of the clamp II 2, and when the pin shaft is tightly held by the first semicircular groove and the second semicircular groove, the outer end of the elastic telescopic mechanism retracts into the mounting hole.

Furthermore, the elastic telescopic mechanism consists of a sliding sleeve 3, a connecting column 4, a return spring 5 and a bayonet 6; the connecting column 4 is arranged in the mounting hole, a radial through hole is formed in the inner end of the connecting column 4, a connecting hole matched with the radial through hole is formed in the inner wall of the mounting hole, and the clamping pin 6 is arranged in the radial through hole and the connecting hole; a blind hole matched with the connecting column 4 is formed in the inner end face of the sliding sleeve 3, the outer end of the connecting column 4 is sleeved in the blind hole, the outer peripheral face of the connecting column 4 is in clearance fit with the hole wall of the blind hole, and the outer peripheral face of the sliding sleeve 3 is in clearance fit with the inner wall of the mounting hole; the reset spring 5 is sleeved on the connecting column 4, the inner end of the reset spring 5 is contacted with the bayonet 6, and the outer end of the reset spring 5 is contacted with the inner end surface of the sliding sleeve 3; when the pin shaft is tightly held by the first clamp 1 and the second clamp 2, a gap is reserved between the bottom of the blind hole and the outer end face of the connecting column 4.

Claims

1. A device for processing double-end chamfers of a pin shaft comprises a first clamp (1) and a second clamp (2); the position of the first clamp (1) is fixed, and the second clamp (2) is arranged on the left side of the first clamp (1); the second clamp (2) can reciprocate along the direction vertical to the left end surface of the first clamp (1); when the second clamp (2) moves rightwards to the maximum stroke position, the left end face of the first clamp (1) is in contact with the right end face of the second clamp (2); a first semicircular groove is formed in the left end face of the first clamp (1), a second semicircular groove is formed in the right end face of the second clamp (2), when the first clamp (1) is in contact with the second clamp (2), the first semicircular groove and the second semicircular groove enclose a cylindrical area, and the axial direction of the cylindrical area is parallel to the horizontal plane; when the second clamp (2) moves to the maximum stroke position leftwards, the distance between the left end face of the first clamp (1) and the right end face of the second clamp (2) is larger than the diameter of the cylindrical area;

the method is characterized in that: the bottom of the second semicircular groove is provided with a mounting hole, an elastic telescopic mechanism is arranged in the mounting hole, the inner end of the elastic telescopic mechanism is fixedly connected with the mounting hole, and the outer end of the elastic telescopic mechanism is a telescopic end; when no external force acts, the outer end of the elastic telescopic mechanism protrudes out of the inner wall of the second semicircular groove, the telescopic direction of the elastic telescopic mechanism is perpendicular to the right end face of the second clamp (2), and when the pin shaft is tightly held by the first semicircular groove and the second semicircular groove, the outer end of the elastic telescopic mechanism retracts into the mounting hole.

2. The apparatus for processing a pin shaft of claim 1, wherein: the elastic telescopic mechanism consists of a sliding sleeve (3), a connecting column (4), a return spring (5) and a bayonet (6); the connecting column (4) is arranged in the mounting hole, a radial through hole is formed in the inner end of the connecting column (4), a connecting hole matched with the radial through hole is formed in the inner wall of the mounting hole, and the clamping pin (6) is arranged in the radial through hole and the connecting hole; a blind hole matched with the connecting column (4) is formed in the inner end face of the sliding sleeve (3), the outer end of the connecting column (4) is sleeved in the blind hole, the outer peripheral surface of the connecting column (4) is in clearance fit with the hole wall of the blind hole, and the outer peripheral surface of the sliding sleeve (3) is in clearance fit with the inner wall of the mounting hole; the reset spring (5) is sleeved on the connecting column (4), the inner end of the reset spring (5) is contacted with the bayonet (6), and the outer end of the reset spring (5) is contacted with the inner end surface of the sliding sleeve (3); when the pin shaft is tightly held by the first clamp (1) and the second clamp (2), a gap is reserved between the bottom of the blind hole and the outer end face of the connecting column (4).