Machine-tooled method for cylinder jacket inner bore surface and fine boring squeezing knife tool

Abstract

The invention belongs to the technical field of metal surface mechanical machining. The invention provides a mechanical machining method of the surface of an internal hole of a gas cylinder sleeve, which includes the following steps: a main cutting blade (1) and an auxiliary cutting blade (2) of a cutter are used to perform the major and the remaining cutting tasks; an extruding cone (4) of a smoothing blade (3) is used to extrude the surface of the internal hole of the gas cylinder sleeve after the cutting step, wherein, the smoothing blade (3) levels off the burrs formed in the process and smoothes the protuberances produced in the extrusion of the internal holes of the gas cylinder sleeve by the extruding cone (4). The precision boring cutter smoothing blade (3) is provided with the extruding cone (4), the arc of which increases gradually in the arc direction along the cutter, wherein, the extruding cone (4) has a conical body which is processed through cutting in the oblique direction from the top to the bottom of the conical body; the arc of the cone bottom is 25 to 35 degrees. The processing of the method improves the compactedness of the metal at the surface of the internal hole of the gas cylinder sleeve, thus improving the wear resistant performance of the internal wall of the gas cylinder sleeve and lengthening the service life of the engine.

Description

technical field [0001] The invention belongs to the metal surface mechanical processing technology, and mainly relates to a machining method for extruding the surface of the inner hole of the cylinder liner while finely boring the surface of the inner hole of the cylinder liner, and a fine boring extrusion tool. Background technique [0002] At present, the casting technology of internal combustion engine cylinder liners mostly adopts centrifugal casting, which will inevitably lead to looser metal tightness of the inner wall of the inner hole surface of the cylinder liner than that of the outer wall; the fine boring process of the inner hole surface (inner wall) of the cylinder liner after casting is only for The removal of the machining allowance cannot improve the metal tightness of the inner wall of the cylinder liner; due to the loose metal on the surface of the inner hole of the cylinder liner, the surface (inner wall) of the inner hole of the cylinder liner is easy to w...

AI Technical Summary

Problems solved by technology

[0002] At present, the casting technology of internal combustion engine cylinder liners mostly adopts centrifugal casting, which will inevitably lead to looser metal tightness of the inner wall of the inner hole surface of the cylinder liner than that of the outer wall; the fine boring process of the inner hole surface (inner wall) of the cylinder liner after casting is only for The removal of the machining allowance cannot improve the metal tightness of the inner wall of the cylinder liner; due to the loose metal on the surface of the inner hole of the cylinder liner, the surface (inner wall) of the inner hole of the cylinder liner is easy to wear and prematurely wear during the use of the engine. scrapped

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