CN209811818U

CN209811818U - Lathe fixture for automatically centering center of inner circle of expanding type annular workpiece

Info

Publication number: CN209811818U
Application number: CN201920641002.7U
Authority: CN
Inventors: 何天德
Original assignee: Guangdong Hong Te Precision Technology Zhaoqing Co Ltd
Current assignee: Guangdong Hong Te Precision Technology Zhaoqing Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2019-12-20
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a lathe fixture for automatically centering the center of an inner circle of an expanding annular workpiece, wherein a bottom plate is fixedly connected with the end part of a main shaft of a lathe through a bolt, and a base is fixed on the bottom plate through the bolt; the two positioning pins are distributed along the circumferential direction at an angle of 120 degrees and are fixed with the base; the front end support of the pressing block is connected with the base, the rear end of the pressing block is connected with the pressing cylinder, and the pressing cylinder is fixed with the base; the plurality of coarse limiting blocks are uniformly distributed along the circumferential direction and are fixed with the base; the centering pushing cylinder is fixed on the base through a pushing cylinder seat; the three floating supporting cylinders are respectively arranged on the three branches of the floating supporting seat and are fixed with the base. The utility model discloses anchor clamps reasonable in design, simple structure, convenient operation both can automatic centering and can the axial compress tightly, has solved and has leaded to the problem that the product disability rate is high in the actual production. The production efficiency is effectively improved, the production cost is reduced, the market demand is met, and good economic benefits are obtained for enterprises.

Description

Lathe fixture for automatically centering center of inner circle of expanding type annular workpiece

Technical Field

The utility model relates to a turning attachment specifically indicates the turning attachment of circle center automatic centering in the circular center automatic centering in an expanding annular work piece in the high accuracy work piece, is applicable to the centre gripping of lathe high accuracy annular part.

Background

The traditional lathe fixture centers a round workpiece by a limiting block or a positioning pin, and the problems that the original point of the round workpiece is inconsistent due to insufficient precision, the tolerance of a processed finished product is large and the like can occur. And the rejection rate is high due to the large tolerance of the finished product. In order to meet the market demand, enterprises need to increase manpower and material resources and increase production time, and production cost is directly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's weak point, design a precision height, the original point uniformity is high, the turning attachment of circle center automatic centering in an expanding annular work piece of centering location circular work piece again can be fast.

The utility model aims at realizing through the following technical scheme:

the utility model provides a turning attachment of circle center automatic centering in expanding annular work piece which characterized in that: the lathe fixture comprises a pressing block, a positioning pin, a thick limiting block, a floating supporting cylinder, a pressing cylinder, a cylinder pushing seat, a centering cylinder pushing, a floating supporting seat, a bottom plate and a base; the base plate is fixedly connected with the end part of a main shaft of the lathe through a bolt, and the base is fixed on the base plate through a bolt; the two positioning pins are distributed along the circumferential direction at an angle of 120 degrees and are fixed on the base; the front end support of the pressing block is connected with the base, the rear end of the pressing block is connected with the pressing cylinder, and the pressing cylinder is fixed on the base through a screw; the plurality of thick limiting blocks are uniformly distributed along the circumferential direction and are fixed on the base through screws; the centering pushing cylinder is fixed on the base through a pushing cylinder seat; the floating support seat is provided with three branches which are distributed equally and fixed on the base, and three floating support cylinders are respectively arranged on the three branches of the floating support seat.

Preferably, there are three of said compacts; six coarse limiting blocks are arranged; the number of the compaction cylinders is three.

Preferably, the two positioning pins and the centering and pushing cylinder are distributed at an angle of 120 degrees.

Compared with the prior art, the utility model have following advantage and beneficial effect:

1. the utility model discloses a turning attachment of circle center automatic centering in expanding annular work piece, this anchor clamps utilize two locating pin contacts to decide the work piece in the circle, thereby enable to push away the jar and push away circular work piece and realize the automatic centering effect in circle center in the work piece to another direction, avoid traditional turning attachment to appear dividing with stopper or locating pin centering circular work piece easily that the circular work piece initial point that is not enough arouses inconsistent, cause the great scheduling problem of finished product tolerance.

2. The utility model discloses anchor clamps reasonable in design, simple structure, convenient operation both can automatic centering and can the axial compress tightly, fine solution in the past the course of working because of the packing force is not enough and the centre of a circle centering is not enough, and lead to the problem that the product disability rate is high.

The utility model discloses effective and practical has effectively improved the quality and the yield of product, has improved production efficiency, has reduced manufacturing cost, has satisfied the market demand, has won good economic benefits for the enterprise.

Drawings

FIG. 1 is a three-dimensional axial side view of a lathe fixture for automatically centering the center of an inner circle of an expanding annular workpiece;

FIG. 2 is a front view of a lathe fixture for automatically centering the center of an inner circle of an expanding annular workpiece;

FIG. 3 is a left side view of a schematic diagram of a lathe fixture for automatically centering the center of an inner circle of an expanding annular workpiece;

FIG. 4 is a side view of the lathe fixture in an expanded annular workpiece with the center of the inner circle automatically centered in the operating state, i.e., after the fixture clamps the workpiece.

In the figure, 1 is a pressing block, 2 is a positioning pin, 3 is a thick limiting block, 4 is a floating supporting cylinder, 5 is a pressing cylinder, 6 is a pushing cylinder seat, 7 is a centering pushing cylinder, 8 is a floating supporting seat, 9 is a bottom plate, 10 is a base, 11 is a workpiece, and 10-1 is a protrusion on the side edge of the base 10.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.

Example 1

As shown in fig. 1, 2 and 3, the lathe fixture for automatically centering the center of the inner circle of the expanding annular workpiece comprises three pressing blocks 1, two positioning pins 2, six thick limiting blocks 3, three floating supporting cylinders 4, three pressing cylinders 5, a cylinder pushing seat 6, a centering cylinder pushing 7, a floating supporting seat 8, a bottom plate 9 and a base 10. After a conventional chuck of the lathe is removed, the bottom plate 9 is fixedly connected with the end part of a main shaft of the lathe through a bolt, and the base 10 is fixed on the bottom plate 9 through a bolt; the two positioning pins 2 are distributed along the circumferential direction at an angle of 120 degrees and are fixed on the base 10; the front end support of the three pressing blocks 1 is connected with the base 10, and the rear end of the three pressing blocks is connected with the pressing cylinder 5, so that the vertical movement can be realized; the pressing cylinder 5 is fixed on the base 10 through screws; the six thick limiting blocks 3 are uniformly distributed along the circumferential direction and are fixed on the base 10 through screws; the centering push cylinder 7 is fixed on the base 10 through a push cylinder seat 6; the floating support 8 has three branches distributed equally and fixed on the base 10, and the three floating support cylinders 4 are installed on the three branches of the floating support 8, that is, the cylinder bodies of the three floating support cylinders 4 are distributed at 120 degrees.

As shown in fig. 4, a lathe fixture operating state of automatic centering of the inner circle center of an expanding annular workpiece is an axial side view after the fixture clamps the workpiece. A lathe fixture for automatically centering the center of an inner circle of an expanding annular workpiece works in the working process that an annular workpiece blank 11 is installed on the fixture, a protrusion 10-1 on the side edge of a base 10 and a coarse limiting block 3 perform coarse positioning on the workpiece 11, three floating support cylinders 4 work simultaneously, the piston heads of the three floating support cylinders 4 radially extend to contact the inner circular wall of the workpiece blank 11 to perform auxiliary support on the inner circle of the workpiece blank 11, then a centering push cylinder 7 works, because two positioning pins and the centering push cylinder 7 are distributed at an angle of 120 degrees, a piston rod of the centering push cylinder 7 can automatically push the workpiece to a centering position until the inner circle of the workpiece is contacted with the positioning pins 1, the three pressing cylinders 5 work to push three pressing blocks 1 to axially move downwards to press the outer end face of the workpiece blank 11 axially, the workpiece blank 11 is fixed on the fixture, and after the workpiece blank 11 is fixed, and starting the lathe, driving the bottom plate 9 and the base 10 to rotate by the lathe spindle, and cutting the excircle of the annular workpiece 11 by the cutter to perform a cutting process.

Claims

1. The utility model provides a turning attachment of circle center automatic centering in expanding annular work piece which characterized in that: the lathe fixture comprises a pressing block (1), a positioning pin (2), a thick limiting block (3), a floating supporting cylinder (4), a pressing cylinder (5), a pushing cylinder seat (6), a centering pushing cylinder (7), a floating supporting seat (8), a bottom plate (9) and a base (10); the bottom plate (9) is fixedly connected with the end part of a main shaft of the lathe through a bolt, and the base (10) is fixed on the bottom plate (9) through a bolt; the two positioning pins (2) are distributed along the circumferential direction in an angle of 120 degrees and are fixed on the base (10); the front end support of the pressing block (1) is connected with the base (10), the rear end of the pressing block is connected with the pressing cylinder (5), and the pressing cylinder (5) is fixed on the base (10) through screws; the coarse limiting blocks (3) are uniformly distributed along the circumferential direction and are fixed on the base (10) through screws; the centering push cylinder (7) is fixed on the base (10) through a push cylinder seat (6); the floating support seat (8) is provided with three branches which are distributed equally and fixed on the base (10), and the three floating support cylinders (4) are respectively arranged on the three branches of the floating support seat (8).

2. The lathe fixture for automatically centering the inner circle center of an expanding annular workpiece according to claim 1, wherein: three pressing blocks (1) are provided; six coarse limiting blocks (3) are arranged; the number of the pressing cylinders (5) is three.

3. The lathe fixture for automatically centering the inner circle center of an expanding annular workpiece according to claim 1 or 2, wherein: the two positioning pins (2) and the centering push cylinder (7) are distributed at an angle of 120 degrees.