Press-fitting device and press-fitting method for scaling wheel shaft

Abstract

The invention discloses a press-fitting device and a press-fitting method for scaling a wheel shaft, and belongs to the technical field of interference fit press fitting. The press-fitting device forscaling the wheel shaft comprises a press machine, a wheel shaft press-fitting pressing head, a fixing device and a locating pin. The wheel shaft press-fitting pressing head is provided with an auxiliary hole and is connected with an actuating cylinder of the press machine. The fixing device comprises a press-fitting base arranged on a machine seat, a plurality of guide columns and an object carrying platform. One ends of the guide columns are fixedly connected with the press-fitting base, the other ends of the guide columns face the direction in which the wheel shaft press-fitting pressing head is located, and the guide columns are provided with springs and guide sleeves in a sleeved mode. An installation hole is formed in the middle portion of the object carrying platform and the objectcarrying platform is connected with guide sleeves, and the axis of the installation hole coincides with the axis of the auxiliary hole. In the press fitting process of the press-fitting device, only one alignment is used between mating workpieces, it is ensured that the alignment of axial line between a sample shaft, a sample wheel shaft and a bearing is achieved, so that the sample wheel shaft isnot eccentric after the press fitting is completed, and the damage rate of the sample is reduced and the quality of the press fitting is improved.

Description

technical field [0001] The invention relates to the technical field of interference fit press-fitting, in particular to a press-fitting device and a press-fitting method for a reduced-ratio axle. Background technique [0002] Press-fitting is a commonly used assembly method in parts assembly. Specifically, it refers to the assembly process in which two parts with a certain amount of interference fit are pressed to the matching position according to the design requirements with matching tools and tooling. Press-fitting During the process, it is required not to damage the relevant parts, and the pressing should be stable. The pressed parts should be in place accurately according to the design requirements, and the pressing parts should have guide cones, which have an appropriate guiding effect. [0003] Axle press-fitting is to press and fit the wheel and the axle according to a certain force to form a whole. The wheel set adopts this tight fit method to transmit large torque ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a press-fitting device and a press-fitting method for a scaled-down axle model, so as to solve the problem that the press-fitting method of the existing scaled-down axle model cannot guarantee the press-fitting quality

Images