Clamp for drilling oil hole on crankshaft

Abstract

The invention relates to a clamp for drilling oil holes on a crankshaft, which comprises a clamp body, a clamping mechanism, a connecting rod positioning mechanism and a drilling jig frame mechanism, wherein the clamping mechanism is provided with a drilling jig supporting seat, a pressing plate and a replaceable cushion block; the drilling jig supporting seat is movably arranged on the clamp body; the pressing plate is arranged on a pressing plate strut on the drilling jig supporting seat through a hinge pin; the lower part of the pressing plate is provided with a hold-down bolt; the hold-down bolt is screwed in, passes through the pressing plate and presses against the drilling jig supporting seat; a turn-knob compresses the bolt; a spindle neck is compressed or loosened through the lever action of the hinge pin arranged on the pressing plate and the pressing plate strut; the connecting rod positioning mechanism comprises a positioning column and a liner plate; the positioning column is arranged in a replaceable liner plate positioning hole; the top of the positioning column supports a connecting rod neck; and the drilling jig frame mechanism comprises the drilling jig supporting seat, a drilling jig plate and a drill bush. The clamp has the advantages of reasonable structure, convenient assembly, low manufacturing cost, strong popularity, and high efficiency of drilling the oil holes, greatly shortens the manufacturing period, and is suitable for clamping various crankshafts for drilling straight oil holes.

Description

technical field [0001] The invention relates to a jig, in particular to a jig for drilling crankshaft oil holes. Background technique [0002] We know that at present, one of the crankshaft straight oil holes is on the crankshaft main journal, and the other is on both the main journal and the connecting rod journal. The latter processing needs to be respectively equipped with a set of drilling jigs on two radial drilling machines and completed in two processes. One process drills the straight oil hole of the main shaft, and the other process drills the straight oil hole of the connecting rod. Because each crankshaft has different oil hole angles, crankshaft main shaft and connecting rod diameter requirements, this requires two sets of fixtures for each crankshaft. In addition to poor versatility , It also causes high manufacturing cost of the fixture, long production cycle, many clamping times, and low efficiency. Contents of the invention [0003] The technical problem ...

AI Technical Summary

Problems solved by technology

One process drills the straight oil hole of the main shaft, and the other process drills the straight oil hole of the connecting rod. Because each crankshaft has different oil hole angles, crankshaft main shaft and connecting rod diameter requirements, this requires two sets of fixtures for each crankshaft. In addition to poor versatility , but also caused high manufacturing cost of the fixture, long production cycle, many clamping times, and low efficiency

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