CN213616076U

CN213616076U - Positioning device for chamfering long shaft parts

Info

Publication number: CN213616076U
Application number: CN202022604653.4U
Authority: CN
Inventors: 张建丰; 周华; 尹丹; 朱翔
Original assignee: Changsha Zhongchuan Gearbox Co ltd
Current assignee: Changsha Zhongchuan Gearbox Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-07-06
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a positioner is used in major axis class part chamfer, including positioning seat and slider, the one end of positioning seat is equipped with the thick locating hole that is used for major axis class part tip to stretch into, the other end is equipped with the guiding hole, and the intercommunication has smart locating hole between guiding hole and the thick locating hole, and the slider is slided to be located in the guiding hole, and the slider is equipped with top towards the one end of smart locating hole, is equipped with in the guiding hole to be used for supporting the regulating part that pushes away the slider and make top tight major axis class part in top. The positioning device for chamfering long shaft parts is accurate in positioning and capable of improving chamfering precision and production efficiency.

Description

Positioning device for chamfering long shaft parts

Technical Field

The utility model relates to the technical field of machining, especially, relate to a long axis class positioner for part chamfer.

Background

With the rapid development of the mechanical industry, the precision requirements on parts and components are higher and higher, and the requirements on reference (chamfer) are also very strict. On the existing internal grinding machine, a chamfer (a 30-degree chamfer on an inner hole) is processed in a three-jaw positioning and fixing mode, the quality of the chamfer is unstable, the quality of subsequent procedures cannot be guaranteed, the repair time of large waves is wasted, and as a result, the efficiency is low and the cost is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a location accurate, can improve chamfer precision and production efficiency's major axis class positioner for part chamfer.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a positioning device for chamfering of long shaft parts comprises a positioning seat and a sliding block, wherein one end of the positioning seat is provided with a thick positioning hole for enabling the end of the long shaft part to extend into, the other end of the positioning seat is provided with a guide hole, a fine positioning hole is communicated between the guide hole and the thick positioning hole, the sliding block is arranged in the guide hole in a sliding mode, the end, facing the fine positioning hole, of the sliding block is provided with a tip, and an adjusting part used for pushing the sliding block to enable the tip to tightly push the long shaft part is arranged in the guide hole.

As a further improvement of the above technical solution:

the adjusting piece is in threaded connection with the hole wall of the guide hole.

And a mounting hole is formed in one side, away from the coarse positioning hole, of the guide hole.

And a spring is arranged between the adjusting piece and the sliding block.

The slider is equipped with spacing post towards the one end of regulating part, the spring housing is located on the spacing post.

And a limiting sleeve is arranged in the guide hole, and the sliding block is slidably arranged in the limiting sleeve.

And a limiting step surface for limiting the position of the limiting sleeve is arranged between the guide hole and the fine positioning hole.

The tip is made of alloy.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a positioner is used in major axis class part chamfer, including positioning seat and slider, the one end of positioning seat is equipped with the thick locating hole that is used for major axis class part tip to stretch into, the other end is equipped with the guiding hole, and the intercommunication has smart locating hole between guiding hole and the thick locating hole, and the slider is slided and is located in the guiding hole, and the slider is equipped with top towards the one end of smart locating hole, is equipped with in the guiding hole to be used for supporting the regulating part that pushes away the slider and make top tight major axis class part in top. When the positioning device is used, the positioning surface and the supporting surface of the long shaft part are positioned and supported by using the conventional three-jaw mechanism, the rear end of the long shaft part extends into the thick positioning hole of the positioning device for chamfering the long shaft part, the thick positioning is carried out in the thick positioning hole, the adjusting piece is abutted against one end of the sliding block, and the center of the end surface of the long shaft part is abutted against the top of the other end of the sliding block. Through the abutting action of the device, the long shaft part is more reasonable in clamping state on the machine tool, the part vibration of the machine tool spindle in high-speed operation is eliminated, the grinding precision of the chamfer is improved, and the processing precision of the subsequent procedures of the part is ensured. The positioning device for chamfering long shaft parts is accurate in positioning and capable of improving chamfering precision and production efficiency.

Drawings

Fig. 1 is a schematic structural view of the positioning device for chamfering long shaft parts of the present invention.

The reference numerals in the figures denote:

1. positioning seats; 2. a slider; 21. a tip; 22. a limiting column; 3. long shaft type parts; 4. coarse positioning holes; 5. a guide hole; 51. mounting holes; 52. a limiting step surface; 6. fine positioning holes; 7. an adjustment member; 8. a spring; 9. and a limiting sleeve.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Fig. 1 shows the utility model discloses a long axis class part is positioner for chamfer's an embodiment, this long axis class part is positioner for chamfer includes positioning seat 1 and slider 2, positioning seat 1's one end is equipped with the thick locating hole 4 that is used for 3 tip of long axis class part to stretch into, the other end is equipped with guiding hole 5, the intercommunication has smart locating hole 6 between guiding hole 5 and the thick locating hole 4, slider 2 cunning is located in guiding hole 5, slider 2 is equipped with top 21 towards the one end of smart locating hole 6, be equipped with in the guiding hole 5 and be used for supporting the regulating part 7 that pushes away slider 2 and make top 21 push up tight long axis class part 3. Specifically, the slide block 2 is positioned between the adjusting piece 7 and the fine positioning hole 6; the fine positioning hole 6 is used for inserting a convex column at the end part of the long shaft part 3 or for enabling a tip 21 to penetrate through to abut against the end part of the long shaft part 3.

When the positioning device is used, the positioning surface and the supporting surface of the long shaft part 3 are positioned and supported by using a conventional three-jaw device, the rear end of the long shaft part 3 extends into the rough positioning hole 4 of the positioning device for chamfering the long shaft part, rough positioning is carried out in the rough positioning hole 4, the adjusting piece 7 is abutted against one end of the sliding block 2, and the center 21 at the other end of the sliding block 2 is abutted against the center of the end surface of the long shaft part 3. Through the abutting action of the device, the long shaft type part 3 is more reasonable in clamping state on the machine tool, the part vibration of the machine tool spindle in high-speed operation is eliminated, the grinding precision of the chamfer is improved, and the machining precision of the subsequent procedures of the part is ensured. The positioning device for chamfering long shaft parts is accurate in positioning and capable of improving chamfering precision and production efficiency.

In this embodiment, the adjusting member 7 is screwed to the hole wall of the guide hole 5. Specifically, an internal thread is arranged on the inner wall of the guide hole 5, an external thread is arranged on the peripheral side of the adjusting part 7, the adjusting part 7 is connected with the internal thread of the guide hole 5 through the external thread, and the magnitude of the jacking force of the centre 21 on the long-axis part 3 can be adjusted as long as the adjusting part 7 is screwed. The outer end face of the adjuster 7 has a screw portion for facilitating rotation of the adjuster 7.

In this embodiment, the side of the guide hole 5 away from the rough positioning hole 4 is provided with a mounting hole 51. The slider 2 is mounted in the guide hole 5 through the mounting hole 51, and the adjuster 7 is mounted in the guide hole 5 through the mounting hole 51. So that the sliding block 2 and the adjusting piece 7 are convenient to disassemble and replace.

In this embodiment, a spring 8 is provided between the adjusting member 7 and the slider 2. The adjusting part 7 is abutted against the sliding block 2 through the spring 8, so that when the tip 21 abuts against the long shaft part 3, the contact with the long shaft part 3 is changed into non-rigid contact, and meanwhile, the compression amount of the spring 8 can be adjusted by screwing the adjusting part 7, so that the adjusting range of the tip 21 for the abutting force of the long shaft part 3 is increased.

In this embodiment, a limiting post 22 is disposed at one end of the sliding block 2 facing the adjusting member 7, and the spring 8 is sleeved on the limiting post 22.

In this embodiment, the guide hole 5 is provided with a limit sleeve 9, and the slider 2 is slidably disposed in the limit sleeve 9. The limiting sleeve 9 has a protection effect on the hole wall of the guide hole 5, and the service life of the positioning seat 1 is prolonged.

In this embodiment, a position-limiting step surface 52 for limiting the position of the position-limiting sleeve 9 is provided between the guide hole 5 and the fine positioning hole 6. The limiting step surface 52 is used for limiting the position of the limiting sleeve 9, so that the limiting sleeve 9 cannot move along with the movement of the sliding block 2.

In this embodiment, the center 21 is made of an alloy.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a long axis class part positioner for chamfer which characterized in that: the device comprises a positioning seat (1) and a sliding block (2), wherein one end of the positioning seat (1) is provided with a rough positioning hole (4) for the end part of a long shaft part (3) to stretch into, the other end of the positioning seat is provided with a guide hole (5), a fine positioning hole (6) is communicated between the guide hole (5) and the rough positioning hole (4), the sliding block (2) is arranged in the guide hole (5) in a sliding manner, one end, facing the fine positioning hole (6), of the sliding block (2) is provided with a tip (21), and an adjusting piece (7) used for pushing the sliding block (2) to enable the tip (21) to tightly push the long shaft part (3) is arranged in the guide hole (5.

2. The positioning device for chamfering a long-axis part according to claim 1, wherein: the adjusting piece (7) is in threaded connection with the hole wall of the guide hole (5).

3. The positioning device for chamfering a long-axis part according to claim 2, wherein: and a mounting hole (51) is formed in one side, away from the coarse positioning hole (4), of the guide hole (5).

4. The positioning device for chamfering a long-axis part according to claim 1, wherein: and a spring (8) is arranged between the adjusting piece (7) and the sliding block (2).

5. The positioning device for chamfering a long-axis part according to claim 4, wherein: the slider (2) is equipped with spacing post (22) towards the one end of adjusting part (7), spring (8) cover is located on spacing post (22).

6. The positioning device for chamfering a long-axis part according to any one of claims 1 to 5, wherein: be equipped with spacing sleeve (9) in guiding hole (5), slider (2) are slided and are located spacing sleeve (9).

7. The positioning device for chamfering a long-axis part according to claim 6, wherein: and a limiting step surface (52) used for limiting the position of the limiting sleeve (9) is arranged between the guide hole (5) and the fine positioning hole (6).

8. The positioning device for chamfering a long-axis part according to any one of claims 1 to 5, wherein: the center (21) is made of alloy.