Piston press fitting method

A piston and press-fitting technology, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve problems such as piston flanging, strain, and affect the performance of the piston, and achieve the effect of avoiding warping damage and good working performance
CN113843601APending Publication Date: 2021-12-28CHONGQING BEIBEN TRANSMISSION MFG
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHONGQING BEIBEN TRANSMISSION MFG
Publication Date
2021-12-28

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Abstract

The invention discloses a piston press fitting method. The method comprises the following steps that (1) a pressure platform is installed below a pressing rod of a press machine; (2) a piston cylinder body is placed on the pressure platform; (3) lubricating oil is smeared on the lip of a piston and the inner wall of the piston cylinder body, and the piston is horizontally placed on the piston cylinder body; 4) the lower end of the pressing rod is fixedly connected with the center of the upper surface of a cross-shaped pressing plate; (5) the press machine is started, the pressure value and the rotating speed of the pressing rod are adjusted to preset values, the pressing rod drives the cross-shaped pressing plate to descend and rotate at a constant speed, and the cross-shaped pressing plate makes contact with the piston and conducts press fitting on the piston; (6) after the lip of the piston enters a guide groove of the piston cylinder body, the rotating function of the pressing rod is closed, and the piston continues to be pressed; and (7) after the piston is in place, pressure application is stopped. By means of the method, it can be guaranteed that when the lip of the piston enters the cylinder body, the piston rotates and is pressed at the same time, and warping damage, lip flanging and extrusion strain of the piston in the assembling process are avoided.
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Description

technical field

[0001] The invention relates to the field of piston processing, in particular to a method for pressing a piston. Background technique

[0002] In an AT gearbox, the piston is a key component for gear shifting, and the reliability of the piston directly determines the life of the gearbox. In the existing AT products, each gearbox consists of two types of pistons with large lips, and the diameter of the pistons is about 300mm. And in the process of press-fitting this type of piston, it is easy to cause the phenomena of piston flanging, extrusion and strain, which will seriously affect the working performance of the piston.

[0003] Therefore, it is necessary to develop a piston press-fitting method that can solve the above problems. Contents of the invention

[0004] The purpose of the present invention is to provide a piston press-fitting method to solve the problems in the prior art.

[0005] The technical scheme adopted for realizing the object of the p...

Claims

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