Hydraulic clamp for inner hole of high-precision thin-wall pipe fitting

Abstract

The invention relates to a lathe attachment, in particular relates to a hydraulic clamp and belongs to the technical field of machining. According to a hydraulic clamp for the inner hole of the high-precision thin-wall pipe fitting provided by the invention, the traditional integral-type structure is replaced by a split-type structure. The hydraulic clamp is characterized by being composed of a hydraulic flange disc (A) which is connected with a lathe and a tensioning shaft (B), wherein the hydraulic flange disc (A) is connected with the tensioning shaft (B) in a sealing manner. In the hydraulic clamp for the inner hole of the high-precision thin-wall pipe fitting, the traditional integral-type structure is replaced by the structure composed of two parts, the processing difficulty is reduced and the performance of a processing technique is improved; the tensioning shaft can be exchanged according to different specification requirements, the whole hydraulic clamp is not necessary to replace and the processing cost is greatly reduced; and above all, the hydraulic clamp provided by the invention can be manufactured voluntarily in China and is not necessary to completely rely on imports, so that the hydraulic clamp provided by the invention lays a technical foundation to propel the development of a high-precision thin-wall pipe sleeve in China and improve the quality of the high-precision thin-wall sleeve.

Description

technical field [0001] The invention relates to a machine tool accessory, in particular to a hydraulic clamp, which belongs to the technical field of mechanical processing. Background technique [0002] At present, the steel thin-walled chrome-plated cylinder liner is a new replacement product that replaces the traditional cast steel liner. After the engine adopts the thin-walled steel liner, it not only improves the engine efficiency, but also prolongs the service life (3 times that of the ordinary cylinder liner). The wall thickness of the thin-walled cylinder liner is 0.8mm----1.2mm, which was first successfully developed by the United Kingdom. In the 1970s, Isuzu Corporation of Japan first introduced this technology, and it was adopted by many companies one after another. However, its manufacturing is more difficult. The production cost is also higher, so our country has not adopted this technology for a long time. In the late 1980s, several factories in China started...

AI Technical Summary

Problems solved by technology

In the late 1980s, several factories in China started production, but the quality still lagged behind that of Japan and the United Kingdom. The key technology lies in special fixtures, chrome plating, honing, and testing. There are two types of special fixtures: mechanical elastic fixtures and hydraulic fixtures. , due to the low precision of mechanical fixtures, it can only be used for rough machining, and the high precision of hydraulic fixtures can only rely on imports at present, so this technology restricts the development of thin-walled steel sleeves in China

Images