Crankshaft flange eccentric hole clamp for drill

Abstract

The invention relates to a crankshaft flange eccentric hole clamp for a drill, which comprises a clamp body, a positioning column, a headstock mechanism and a tailstock mechanism. In the headstock mechanism, a headstock oil cylinder is fixed on a fixed support with bolts and positioning pins; the fixed support is fixed on the clamp body; a guide sleeve is installed on the headstock oil cylinder; one end of a piston rod is provided with a piston, the other end of the piston rod passes through the guide sleeve and is installed in the hole of the headstock oil cylinder; and the conic section of the front of the piston rod is pushed into the central hole of the big end of a crankshaft. In the tailstock mechanism, a tip guide sleeve is installed on a tailstock; the tailstock is connected with and installed on a subplate by keys; the subplate is connected with and installed on the clamp body by radial keys; one end of the tailstock piston rod is provided with a piston, the other end of the tailstock piston rod is installed in the hole of the tailstock by a fixing flange, a connecting flange and the tip guide sleeve, and the conic part of the front end of the tailstock piston rod is pushed into the small end of the crankshaft. The invention has the advantages of reasonable structure, convenient assembly, low production cost, high universality, and oil hole drilling high efficiency and is suitable for processing various crankshaft flange eccentric holes.

Description

technical field [0001] The invention relates to a fixture, in particular to a fixture for drilling eccentric holes in crankshaft flanges. Background technique [0002] We know that at present, eccentric positioning holes need to be drilled on the flange end faces at both ends of the crankshaft. Generally, the large end faces are mostly on the large end face, and the small end is less. Drilling is generally done on a radial drill, using a set of clamps perpendicular to the drill bit to clamp the main journal of the crankshaft, and then using a set of drilling jigs to clamp the large-end cylindrical part, and positioning is required for each clamping. And for different crankshafts, a set of fixtures is needed. Due to the variety of crankshafts, there are also many fixtures designed and manufactured, resulting in high tooling costs, long production cycles, and labor-intensive and time-consuming operations. Especially when using the above-mentioned drilling jig, positioning is...

AI Technical Summary

Problems solved by technology

Due to the variety of crankshafts, there are also many fixtures designed and manufactured, resulting in high tooling costs, long production cycles, and labor-intensive and time-consuming operations.

Especially when using the above-mentioned drilling jig, it is time-consuming to locate, frequent clamping, labor-intensive, poor versatility, easy to form scars on the clamping part, resulting in poor surface roughness of parts and low processing efficiency

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