Bushing Press Tool

Abstract

The invention discloses a lining press-assembling tool. The lining press-assembling tool comprises a pressing head assembly, a pressing head, an eccentric shaft, a handle, a connecting pipe and a limiting end head. The pressing head assembly comprises an oil hole limiting rod; a to-be-press-assembled lining is arranged on the outer circumferential surface of the pressing head, and an oil hole limiting rod piercing hole is formed in the outer circumferential surface of the pressing head; the eccentric shaft comprises a main rotating shaft and a shifting shaft, the shifting shaft is located at one end of the main rotating shaft and eccentric with the main rotating shaft, the main rotating shaft can be rotatably arranged in the pressing head in a penetrating mode, and the shifting shaft is matched with a shifting block groove of the oil hole limiting rod; the handle is arranged at the other end of the eccentric shaft; one end of the connecting pipe is connected with the pressing head assembly; and one end of the limiting end head is connected with the other end of the connecting pipe, and the limiting end head is used for being connected with hydraulic equipment. According to the lining press-assembling tool, by rotating the handle at the front end of the pressing head, the oil hole limiting rod is pushed to be subjected to positioning, the positioning gap is small, and positioning is accurate.

Description

technical field [0001] The invention relates to the field of engine liner pressing, in particular to a liner pressing tool. Background technique [0002] The engine is a power machine that converts heat energy into mechanical motion. Its valve train is a mechanism that controls the breathing of the engine, and the camshaft directly controls the opening and closing of the cylinder block valve. For the non-overhead cam mechanism, the camshaft hole that supports the rotation of the camshaft is generally designed on the cylinder block, and its inner wall is designed with an oil passage for lubricating oil to provide lubricating oil when the camshaft moves. The camshaft hole is the skeleton that supports the movement of the cam, and the camshaft hole needs to be press-fitted with a bush before installing the camshaft. The camshaft bushing needs to be pressed into the camshaft hole through the pressure rod, and the oil hole on the bushing is required to be aligned with the oil ch...

AI Technical Summary

Problems solved by technology

During the press-in process, the steel ball rolls against the inner hole of the bushing, leaving an indentation, which will cause damage to the inner hole of the bushing

If the bushing is pressed in without machining, the indentation will cause hidden dangers to the rotation and lubrication of the camshaft

[0006] 2. There is a large gap between the steel ball and the oil hole of the bush, because it is a spherical surface of the steel ball, the rotation of the bush will compress the steel ball again under sufficient force, so that the steel ball is separated from the oil hole of the bush, causing the bush to rotation, causing the bushing oil hole to misalign with the oil passage hole in the bushing bore

The accuracy of positioning the oil hole is relatively low, which may easily lead to misalignment between the oil hole of the bushing and the oil passage hole in the hole

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