Press-fit assembly for cylinder block camshaft bushing

Abstract

The invention discloses a pressing assembly for a cylinder block cam shaft liner. The pressing assembly comprises a pressing head, a directional guide sleeve and a guide hand stick. The pressing head is a cylinder, and the cylinder is sleeved with a rubber gasket. A retractable steel ball is installed on the side wall of the cylinder. The cylinder is used for allowing the liner to be sleeved in. The steel ball is used for aligning an oil hole in the liner and thus the liner can be limited. The pressing head is used for pressing the liner located in each gear of cam shaft hole of a pressing cylinder block. A directional hole is formed in the directional guide sleeve. After the liner is pressed into the first gear of cam shaft hole of the cylinder block, the directional guide sleeve is used for being supported in the liner pressed into the first gear of cam shaft hole of the cylinder block. The guide hand stick is used for penetrating through the directional guide sleeve and then is connected with the pressing head. The pressing assembly is high in pressing accuracy, convenient to operate and high in efficiency.

Description

technical field [0001] The invention relates to the field of camshaft assembly, in particular to a press-fit assembly of a cylinder block camshaft bushing. Background technique [0002] At present, the press-fitting of the cylinder block camshaft bushing is completed using a pressure head and an auxiliary rod. The specific process is as follows: the bottom of the body faces upwards, and the bushing is manually placed on the pressure head to align with the cylinder block camshaft hole (the first gear at the front end). or the first gear at the rear end), moderately tap the side of the pressure head with a hammer to press the bushing into the camshaft hole, and after visual inspection, stop beating and take out the pressure head. Then put the second gear bushing on the pressure head, align the camshaft hole from the cylinder body cavity (the second gear at the front end or the second gear at the rear end), and use one end of the auxiliary rod to stick against the front or rear...

AI Technical Summary

Problems solved by technology

[0004] 1. There are oil holes on the camshaft bushing (through the main bearing hole), but the pressure head does not have the function of a limit bushing, which is prone to bush pressure misalignment and oil hole blockage, resulting in insufficient lubrication of the engine, burning tiles, and poor performance. quality accident

[0005] 2. When pressing the middle gear of the cylinder block, the pressure head can only be put into the inner cavity of the bottom surface of the cylinder block. However, the inner cavity is small, and human eyes cannot observe whether the pressed bushing is correct.

[0006] 3. The operation intensity of personnel is relatively high, and sometimes two people are required to cooperate, and the press-fitting efficiency is low

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