Fixture and lathe

Abstract

The invention provides a fixture and a lathe, relates to the technical field of machining equipment, and aims to optimize the structure of the fixture to a certain extent and improve the machining precision and quality of an inner static ring. The fixture provided by the invention is used for positioning the inner static ring, and comprises a fixture main body, first limiting pieces and a first fastening assembly, wherein a bearing part is formed on one axial side of the fixture body in the circumferential direction of the fixture body; the bearing part enables the fixture main body to form apositioning table; the positioning table is sleeved with the inner static ring; one side of the inner static ring makes contact with the bearing part; a plurality of first positioning holes are formedin the axial direction and the circumferential direction of the positioning table; one end of each first limiting piece makes contact with the inner static ring; the first fastening assembly penetrates through the other end of each first limiting piece and enters the first positioning holes; and the first limiting pieces are pressed on the positioning table, so that the first limiting pieces canpress the inner static ring on the fixture main body.

Description

technical field [0001] The invention relates to the technical field of processing equipment, in particular to a fixture and a lathe. Background technique [0002] The inner static ring is a structural part commonly used in mechanical seals. Because it needs to seal the mechanical structure, it requires high processing accuracy. During the assembly process of the gearbox, it is necessary to determine the thickness of the required inner static ring according to the clearance of the assembly. [0003] At present, the processing of the inner static ring is mostly carried out with lathes, and the outer circle of the inner static ring is placed against the inner side of the claw, and the left end surface is positioned against the step surface of the claw for positioning processing. However, the clamping of the jaws easily deforms the outer circle of the inner static ring, and the part of the left end surface that is not in contact with the end surface of the jaws is in a suspende...

AI Technical Summary

Problems solved by technology

However, the clamping of the jaws easily deforms the outer circle of the inner static ring, and the part of the left end surface that is not in contact with the end surface of the jaws is in a suspended state. It is easy to cause knife and vibration during the turning process, resulting in flatness of the turned surface. Poor degree and roughness

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