CN218194766U

CN218194766U - Automatic positioning fixture

Info

Publication number: CN218194766U
Application number: CN202222409364.8U
Authority: CN
Inventors: 刘显国; 罗限章; 朱卫林
Original assignee: Taizhou Weizhi Machine Tool Co ltd
Current assignee: Taizhou Weizhi Machine Tool Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-03
Anticipated expiration: 2032-09-07

Abstract

The utility model provides an automatic positioning fixture belongs to anchor clamps technical field. The problem that an existing positioning clamp cannot accurately and effectively transmit rotary motion to a workpiece with a clamping end having special-shaped characteristics is solved. The automatic positioning clamp comprises a headstock center and a clamp fixing shaft fixed on the headstock center, wherein a bearing seat is arranged outside the clamp fixing shaft, a bearing is arranged between the bearing seat and the clamp fixing shaft, an inner edge baffle is radially outwards protruded on the inner peripheral wall of the bearing seat, the clamp fixing shaft and the bearing are positioned in the bearing seat and are arranged at the left side position of the inner edge baffle, a spring, a piston profiling sleeve and a sealing cover are sequentially arranged on the right side of the inner edge baffle in the bearing seat, the sealing cover is fixedly arranged at the end part of the bearing seat and limits the piston profiling sleeve in the bearing seat, and the outer end part of the piston profiling sleeve is provided with a convex step. The utility model has the advantages of realize accurate effectual transmission rotary motion to special-shaped workpiece.

Description

Automatic positioning fixture

Technical Field

The utility model belongs to the technical field of anchor clamps, a positioning fixture is related to, in particular to automatic positioning fixture.

Background

The jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process, and is also called a jig.

At present, when a workpiece with a special-shaped clamping end is encountered in the automatic production process, the workpiece is not suitable for being selected from a self-locking chuck, and the direction of the workpiece cannot be positioned in the feeding process of a manipulator, so that a transmission part and the workpiece in the automatic production cannot accurately and effectively transmit rotary motion, and the machining precision of the workpiece with the special-shaped clamping end is finally influenced.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide one kind and be used for automatic to special-shaped characteristic work piece location, make the accurate automatic positioning anchor clamps of effective rotation of work piece.

The purpose of the utility model can be realized by the following technical proposal: an automatic positioning clamp is characterized by comprising a headstock center and a clamp fixing shaft fixed on the headstock center, wherein a bearing seat is arranged outside the clamp fixing shaft, a bearing is arranged between the bearing seat and the clamp fixing shaft, an inner edge partition board radially protrudes outwards from the inner peripheral wall of the bearing seat, the clamp fixing shaft and the bearing are positioned in the bearing seat and are arranged at the left side position of the inner edge partition board, a spring, a piston profiling sleeve and a sealing cover are sequentially arranged in the bearing seat and are positioned at the right side of the inner edge partition board, the sealing cover is fixedly arranged at the end part of the bearing seat and limits the piston profiling sleeve in the bearing seat, two ends of the spring respectively abut against the inner edge partition board and the piston profiling sleeve, the piston profiling sleeve can move along the inner wall of the bearing seat, an outward protruding convex step is arranged at the outer end part of the piston profiling sleeve, a transmission groove for the protruding step to extend into the matching is formed in the sealing cover, a groove structure matched with the characteristics of a workpiece is formed in the protruding step, and a tailstock center is arranged at a position opposite to the headstock center.

In the automatic positioning clamp, the clamp fixing shaft is fixed on the head frame tip through a set screw.

In the above automatic positioning fixture, the cover is mounted on the bearing seat by a plurality of stud screws.

In the automatic positioning fixture, the bearing seat and the fixture fixing shaft are respectively provided with a shaft retainer ring for positioning the bearing.

In the automatic positioning fixture, a headstock device for fixing the headstock center and driving the bearing seat to rotate is arranged outside the headstock center, and a tailstock device for fixing the tailstock center is arranged outside the tailstock center.

In the above automatic positioning fixture, the bearing seat is externally provided with a transmission seat driven by the head frame to rotate.

Compared with the prior art, the automatic positioning fixture has the advantage of realizing accurate and effective transmission of rotary motion to the special-shaped workpiece, thereby forming the effects of high-precision positioning and processing of the special-shaped workpiece.

Drawings

Fig. 1 is a schematic perspective view of the automatic positioning jig.

Fig. 2 is a schematic sectional structure view of the automatic positioning jig.

Fig. 3 is a schematic perspective view of the tailstock center and the tailstock device removed.

In the figure, 1, a headstock center; 2. a clamp fixing shaft; 3. a bearing seat; 4. a bearing; 5. an inner edge baffle plate; 6. a spring; 7. a piston profiling sleeve; 8. sealing the cover; 9. a raised step; 10. a transmission groove; 11. a groove structure; 12. a tailstock center; 13. tightening the screw; 14. stud screws; 15. a retainer ring for a shaft; 16. a head frame device; 17. a tailstock device; 18. a transmission seat.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the automatic positioning fixture comprises a headstock center 1 and a fixture fixing shaft 2 fixed on the headstock center 1, the fixture fixing shaft 2 can be adjusted in position from left to right, a bearing seat 3 is arranged outside the fixture fixing shaft 2, a bearing 4 is arranged between the bearing seat 3 and the fixture fixing shaft 2, an inner edge partition plate 5 radially protrudes outwards from the inner peripheral wall of the bearing seat 3, the fixture fixing shaft 2 and the bearing 4 are positioned in the bearing seat 3 and are arranged at the left side position of the inner edge partition plate 5, a spring 6, a piston profiling sleeve 7 and a sealing cover 8 are sequentially arranged in the bearing seat 3 and are positioned at the right side of the inner edge partition plate 5, the sealing cover 8 is fixedly arranged at the end of the bearing seat 3 and limits the piston profiling sleeve 7 in the bearing seat 3, two ends of the spring 6 respectively abut against the inner edge partition plate 5 and the piston profiling sleeve 7, the piston profiling sleeve 7 can move along the inner wall of the bearing seat 3, specifically, the piston profiling sleeve 7 can move along the inner wall of the bearing seat 3 when being subjected to external force, the piston sleeve 7 has a protruding step 9, the shape of the protruding step 9 is designed according to the workpiece characteristics, the groove 10 for allowing the protruding step 9 to extend into the groove 10, and can be matched with the groove-shaped transmission structure of the workpiece, and the workpiece, the workpiece can be matched with the workpiece, and the workpiece, the workpiece.

In more detail, the clamp fixing shaft 2 is fixed on the headstock center 1 through the set screw 13, and after the left and right positions of the clamp fixing shaft 2 are adjusted, the clamp fixing shaft is positioned by the set screw 13.

Preferably, the cover 8 is mounted on the bearing housing 3 by means of a plurality of stud screws 14.

Preferably, the bearing seat 3 and the clamp fixing shaft 2 are both provided with a shaft retainer ring 15 for positioning the bearing 4.

Preferably, a headstock device 16 is arranged outside the headstock center 1 for fixing the headstock center and driving the bearing seat 3 to rotate, and a tailstock device 17 is arranged outside the tailstock center 12 for fixing the tailstock center.

In further detail, the bearing seat 3 is externally provided with a transmission seat 18 driven by the headstock to rotate, and specifically, the transmission seat 18 is driven by a driving structure on the headstock to enable the bearing seat 3 to rotate around the headstock center 1.

A workpiece is placed between a headstock center 1 and a tailstock center 12 by a manipulator under the condition of no positioning, the tailstock center 12 tightly props the workpiece, a piston profiling sleeve 7 is conducted to a spring 6 to be stressed and contracted, the headstock drives a bearing seat 3 to rotate and transmits a rotating force to the piston profiling sleeve 7 to rotate, at the moment, the two opposite centers are fixed and tightly pressed, the workpiece is in a static state, when a groove structure 11 of the piston profiling sleeve 7 is just coincident with the characteristics of the workpiece, the spring 6 drives the piston profiling sleeve 7 to extend out to clamp the workpiece, the automatic positioning is completed, and the workpiece rotates along with the positioning.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms headstock center 1, clamp securing axis 2, bearing seat 3, bearing 4, inner edge spacer 5, spring 6, piston profiling sleeve 7, cover 8, raised step 9, drive groove 10, groove structure 11, tailstock center 12, set screw 13, stud screw 14, axial retainer 15, headstock 16, tailstock 17, drive seat 18, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. An automatic positioning clamp is characterized by comprising a headstock center (1) and a clamp fixing shaft (2) fixed on the headstock center (1), wherein a bearing seat (3) is arranged outside the clamp fixing shaft (2), a bearing (4) is arranged between the bearing seat (3) and the clamp fixing shaft (2), an inner edge partition plate (5) is radially protruded out of the inner peripheral wall of the bearing seat (3), the clamp fixing shaft (2) and the bearing (4) are positioned in the bearing seat (3) and are arranged at the left side position of the inner edge partition plate (5), a spring (6), a piston profiling sleeve (7) and a sealing cover (8) are sequentially arranged in the bearing seat (3) and positioned at the right side of the inner edge partition plate (5), the sealing cover (8) is fixedly arranged at the end part of the bearing seat (3) and limits the piston profiling sleeve (7) in the bearing seat (3), two ends of the spring (6) are respectively abutted against the inner edge partition plate (5) and the piston sleeve (7), the piston profiling sleeve (7) can move along the inner wall of the bearing seat (3), a convex profile sleeve (9) is provided with a convex transmission groove (9), and a workpiece (9) is matched with a convex transmission groove (9) for processing groove (9), a tailstock center (12) is arranged at the position opposite to the headstock center (1).

2. An automatic positioning clamp according to claim 1, characterized in that the clamp fixing shaft (2) is fixed on the headstock center (1) by a set screw (13).

3. An automatic positioning fixture, according to claim 1, characterized in that said cover (8) is mounted on the bearing housing (3) by means of a plurality of stud screws (14).

4. An automatic positioning fixture as claimed in claim 1, characterised in that the bearing block (3) and the fixture fixing shaft (2) are provided with a shaft collar (15) for positioning the bearing (4).

5. The automatic positioning fixture according to claim 1, wherein a headstock device (16) is arranged outside the headstock center (1) for fixing the headstock center and driving the bearing seat (3) to rotate, and a tailstock device (17) is arranged outside the tailstock center (12) for fixing the tailstock center.

6. An automatic positioning fixture as claimed in claim 1, characterized in that the bearing seat (3) is externally provided with a transmission seat (18) which is rotated by the headstock.