Inner spline part key side positioning spline expansion device and machining process thereof

Abstract

The invention relates to the field of mechanical manufacturing tool fixtures, in particular to an inner spline part key side positioning spline expansion device and a machining process thereof. The device comprises a flange plate, an axial positioning body, a conical radial positioning body, an O-shaped rubber ring, a key side positioning spline expansion sleeve and a pull rod, wherein the conicalradial positioning body is arranged on the flange plate connected with a machine tool, and is fixedly connected with the flange plate; the axial positioning body is arranged on the flange plate, andis fixedly connected with the flange plate; and a groove is formed in the outer peripheral wall of the key side positioning spline expansion sleeve. The device solves the problems of difficult positioning, need of repeated measurement and machining in the machining process and low efficiency in traditional machining of disc parts with involute spline holes, has the advantages of precise and stablepositioning, firm and efficient expansion, improvement of the machining efficiency and stable part quality, and meets the use demands of users.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing fixtures, in particular to a key side positioning spline tightening device for an internal spline part and a processing technology thereof. Background technique [0002] The involute spline is a kind of spline. Compared with the rectangular spline, the involute spline has many advantages, such as a large number of teeth, thick tooth ends, tooth roots, strong bearing capacity, easy automatic centering, and high installation accuracy. Therefore, the application of involute splines is becoming more and more extensive. In the machining industry, some disk parts with involute spline holes are often encountered, and the detection reference is the diameter of the involute spline pitch circle, that is, the key side positioning must be used to detect other parts. Shape and position tolerance, in order to meet the requirements of users and product drawings, when finishing the internal spline parts a...

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Problems solved by technology

[0003] In order to solve the problem of difficult positioning existing in the current processing of disk parts with involute spline holes, repeated measurement and processing are required during the processing, which is inefficient, and furthermore, it cannot satisfy people's needs for parts with involute spline holes. In order to solve the problem of the processing and use requirements of disc parts with spline holes, the present invention provides a key side positioning spline tensioning device for internal spline parts and its processing technology. The technical scheme is as follows: a key side of internal spline parts The positioning spline tensioning device includes a flange, an axial positioning body, a conical radial positioning body, an O-shaped rubber ring, a key side positioning spline expansion sleeve and a pull rod, wherein the conical radial positioning The body is arranged on the flange connected to the machine tool and is fixedly connected with the flange. The flange is provided with an axial positioning body, and the axial positioning body is fixedly connected with the flange. The outer peripheral wall of the key side positioning spline expansion sleeve is provided with a groove, the O-shaped rubber ring is arranged in the groove and connected with the groove, and one end of the inner cavity of the key side positioning spline expansion sleeve It is set as an inner tapered cavity, and the other end is set as an annular cavity. The peripheral surface of the tapered radial positioning body is provided with a tapered matching outer tapered surface. The cavity is matched with the tapered outer tapered surface on the conical radial positioning body. The center of the conical radial positioning body is provided with a guide positioning hole, and a pull rod is arranged in the guide positioning hole. The pull rod The upper end is provided with a connecting screw and the other end is provided with a stepped shaft, and the stepped shaft is arranged in the annular cavity of the key side positioning spline expansion sleeve and connected with the key side positioning spline expansion sleeve;

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