Connecting rod copper sleeve pressing device

Abstract

The invention discloses a connecting rod copper sleeve press fitting device, and relates to the field of press fitting of connecting rod copper sleeves. The connecting rod copper sleeve press fitting device comprises a base, a support, an air cylinder and a pressing head. The support is fixed to the upper end of the base, a cantilever is fixed to the top end of the support, the air cylinder is fixed to the cantilever, and the pressing head is fixed to the air cylinder. A positioning table is arranged at the upper end of the base, the diameter of the positioning table is equal to that of a large-end hole of a connecting rod, and a boss is arranged at the position, between the positioning table and the support, of the base. A groove is formed in the boss, and a ladder-shaped positioning block is arranged in the groove, and a pressure spring is fixed to the position between the positioning block and the base. The diameter of the lower end of the positioning block is equal to that of a small-head hole of the connecting rod, and the diameter of the upper end of the positioning block is equal to the inner diameter of the copper sleeve. The pressing head is a ladder-shaped cylinder, and an annular baffle located on the outer side of the lower end of the pressing head is arranged at the ladder position of the pressing head. According to the scheme, copper sleeve deviation or crushing caused by connecting rod movement in the press fitting process can be prevented, secondary machining of the copper sleeve can be avoided, and the press fitting quality can be improved; and the utilization rate of the copper sleeve is improved, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the field of press-fitting of copper sleeves of connecting rods, in particular to a press-fitting device for copper sleeves of connecting rods. Background technique [0002] The connecting rod is the part that connects the piston and the crankshaft in the engine, transmits the force acting on the piston to the crankshaft, and converts the reciprocating motion of the piston into the rotational motion of the crankshaft. The connecting rod body is composed of three parts, the part connected with the piston pin is called the small end of the connecting rod; the part connected with the crankshaft is called the large end of the connecting rod, and the part connecting the small end and the large end is called the connecting rod shaft. The small end of the connecting rod is mostly a thin-walled circular ring structure. In order to reduce the wear with the piston pin, a thin-walled copper sleeve is usually pressed into the small end hol...

AI Technical Summary

Problems solved by technology

With the above operation, the press-fitting accuracy control is inaccurate, the rate of unqualified products is high, and manual operation results in high production costs and low efficiency.

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