A machine tool for brush plating repair of automobile engine crankshaft

Abstract

The invention belongs to the technical field of crankshaft repair, and specifically relates to a brush-plating repair machine tool for crankshafts of automobile engines, which includes a workbench, a chuck, a tailstock, a sliding mechanism and an electric brush-plating device; the tailstock and the chuck are coaxially arranged on On the workbench; the sliding mechanism includes a screw, a guide post and a first slider; the screw and the guide post are parallel to the axis of the chuck, the first slider is installed on the screw and the guide post, and the first slider between the two first sliders There is an arc-shaped plate between them; the inner ring of the arc-shaped plate is intermittently tangent to the rotating connecting rod neck; the inner ring of the arc-shaped plate is provided with an electric brush plating device, and the electric brush plating device includes a brush ring, a second slider, a support plate and gear. In the present invention, by setting the brush ring, when the connecting rod neck rotates eccentrically, it is snapped into the brush ring, and with the rotation of the crankshaft, the second slider is pushed to slide along the arc-shaped plate, and a gear is generated when the second slider slides, and The brush is driven to rotate around the outer ring of the connecting pin neck, and the outer ring of the connecting rod neck is evenly brushed to improve the repair efficiency of the crankshaft.

Description

technical field [0001] The invention belongs to the technical field of crankshaft repair, in particular to a brush-plating repair machine tool for an automobile engine crankshaft. Background technique [0002] The crankshaft is the main rotating part of the engine. After the connecting rod is installed, it can undertake the up and down (reciprocating) motion of the connecting rod into a circular (rotating) motion. It is an important part of the engine. Its material is made of carbon structural steel or ductile iron. There are two important parts: the main journal, the connecting rod journal, (and others). The main journal is installed on the cylinder block, the connecting rod journal is connected with the large end hole of the connecting rod, and the small end hole of the connecting rod is connected with the cylinder piston, which is a typical slider crank mechanism. The lubrication of the crankshaft mainly refers to the lubrication of the big end bearing bush of the connec...

AI Technical Summary

Problems solved by technology

[0003] The crankshaft is a precise and expensive important part that can withstand alternating loads and high mechanical strength. Once a certain part of the crankshaft is damaged, it will seriously affect the work of the whole machine

The damage of the connecting rod neck of the crankshaft is one of the common damages. At present, the commonly used remanufacturing and repair methods for the damage of the connecting rod neck of the crankshaft include electric brush plating, spraying, and electric welding surfacing. Among them, in the brush plating method, manual brushing is used. The efficiency of plating is low. At the same time, due to the eccentricity of the connecting rod neck relative to the central axis of the crankshaft, when it is clamped on the lathe for brush plating, the brush plating is uneven, which affects the repair efficiency of the connecting rod neck.

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