Special fixture for connection rod

Abstract

A connection rod is used for connecting a piston with a crankshaft, transmits the acting force borne by the piston to the crankshaft, and converts the reciprocating motion of the piston into the rotational motion of the crankshaft. A connection rod set is composed of a connection rod body, a connection rod large-end cover, a connection rod small-end bush, a connection rod large-end bearing bush, connection rod bolts (or screws) and the like. The connection rod set bears the gas acting force transmitted from a piston pin and the action of swing of itself and the reciprocating inertial force of a piston set, and the magnitude and the direction of the forces periodically change. Thus, the connection rod bears the action of compression, stretching and other alternating loads. The connection rod must have enough fatigue strength and structural rigidity. If the fatigue strength is not enough, frequently, the connection rod body or the connection rod bolts are broken, and accordingly a large accident of complete machine damage is caused. If the rigidity is not enough, the rod body can be bent and deformed, out-of-round deformation of the connection rod large end is caused, and eccentric abrasion to the piston, a cylinder, a bearing, a crank pin and the like is caused. The invention provides a special fixture for the connection rod, and machining of connection rod end face milling and hole honing is achieved. The special fixture for the connection rod is composed of a bottom plate 1, a fixed V-shaped block 2, an oil cylinder 3, a movable V-shaped block 4, a pressing screw 5, gaskets 6, nuts 7 and an anti-slip mat 8.

Description

technical field [0001] Connecting rod parts are common parts in the field of mechanical processing, especially in engine manufacturers, generally use special tooling, and the present invention can be applied to the processing of connecting rods of different lengths within a certain range. Background technique [0002] The connecting rod connects the piston and the crankshaft, and transmits the force acting on the piston to the crankshaft, converting the reciprocating motion of the piston into the rotational motion of the crankshaft. The connecting rod group is composed of connecting rod body, connecting rod big head cover, connecting rod small end bushing, connecting rod big end bearing bush and connecting rod bolts (or screws). The connecting rod group is subjected to the gas force from the piston pin, its own swing and the reciprocating inertial force of the piston group. The magnitude and direction of these forces change periodically. Therefore, the connecting rod is sub...

AI Technical Summary

Problems solved by technology

Insufficient fatigue strength will often cause the connecting rod body or connecting rod bolts to break, and then cause a major accident of complete machine damage

If the rigidity is insufficient, it will cause bending deformation of the rod body and out-of-round deformation of the big end of the connecting rod, resulting in eccentric wear of the piston, cylinder, bearing and crank pin, etc.

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