Pre-tightening spring of clutch operating mechanism and forming method, clutch operating mechanism

Abstract

A pre-tension spring of a clutch operating mechanism and its forming method, and a clutch operating mechanism, wherein the forming method of the pre-tension spring includes: using a first cutting knife to cut one end of a spring wire along a first cutting surface to form a first end, the first The cutting surface is rotated along the first rotation direction by a first angle and coincides with the first plane perpendicular to the spring wire; the helically wound spring wire forms a pre-tension spring, the first end has a first end face, the first end face is an inclined plane, and the back To the central axis and towards the outside of the pre-tension spring; use a second cutting knife to cut one end of the pre-tension spring connected with the remaining spring along the second cutting plane, and the second cutting plane rotates along the second rotation direction by a second angle and is perpendicular to the spring The second plane of the line coincides, and the first and second rotation directions are two opposite directions. With the pre-tightening spring, each end surface can be offset against the thrust block along the circumferential direction of the release bearing, thereby increasing the assembly speed.

Description

technical field [0001] The invention relates to the technical field of clutches, in particular to a pretension spring of a clutch operating mechanism, a forming method, and a clutch operating mechanism. Background technique [0002] The existing clutch system includes: a clutch including a diaphragm spring; and a clutch operating mechanism for controlling separation and engagement of the clutch. The clutch operating mechanism includes: release bearing and clutch central slave cylinder (ClutchCentral Slave Cylinder, CSC). Wherein, the clutch centering type auxiliary cylinder includes an auxiliary cylinder housing, one side of the release bearing in the axial direction is opposite to the auxiliary cylinder housing, and the other side is opposed to the diaphragm spring through the outer ring. A preload spring is provided between the auxiliary cylinder housing and the release bearing, and the preload spring performs axial preloading on the release bearing. [0003] Specificall...

AI Technical Summary

Problems solved by technology

[0006] During the manufacturing process of the pretension spring, a black mark is formed on the end of the pretension spring and the thrust block, which increases the production steps, and the black mark must be identified for each assembly, which increases the assembly time and reduces the production efficiency

Also, even with black marking, there is a risk of pushing the opposite end of the preload spring against the thrust block

Images