Crankshaft turning tool

Abstract

The invention provides a crankshaft turning tool, which comprises a three-jaw self-centering chuck, an indexing disc, a four-jaw independent chuck, a front eccentric cushion block, a rear eccentric ejector block and a balancing weight. The front eccentric cushion block and the three-jaw self-centering chuck are clamped on the four-jaw independent chuck, a plurality of radial positioning grooves are uniformly arranged on the indexing disc and match with a clamping jaw at the upper end of the four-jaw independent chuck, the three-jaw self-centering chuck is positioned and naturally indexed by means of selecting different radial positioning grooves to clamp the clamping jaw at the upper end of the four-jaw independent chuck, a workpiece mounting hole matching with an outer circle of a crankshaft is arranged on the rear eccentric ejector block, two jackscrew holes are disposed on a side wall of the workpiece mounting hole, a center hole is further arranged on the rear eccentric ejector block, and the distance from the axis of the center hole to the axis of the workpiece mounting hole is equal to the eccentricity of the crankshaft. Natural indexing is realized by the aid of the indexing disc, workload of a scribing working procedure is reduced, a working procedure for machining center holes at two ends of a machined workpiece of a boring machine is omitted, and production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a crankshaft turning tooling. Background technique [0002] At present, when a horizontal lathe is used to process a crankshaft, a chicken heart clip is often used. During processing, two tops are used to press against the corresponding center hole of the workpiece. The lathe uses a dial fixed on the chuck to move the chicken heart clip to rotate, thereby driving the entire workpiece. Make a rotary motion. However, when the crankshaft has the characteristics of large volume, irregular shape, center of gravity deviating from the main axis of the workpiece, large eccentric circle diameter, large eccentric distance, and multiple eccentric outer diameters, the existing processing method will have low clamping force. , not easy to counterweight, low work efficiency and other shortcomings, so the existing crankshaft processing method is not suitable for crankshafts with ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the clamping force is small, it is not easy to balance the weight, the work efficiency is low, and it is not suitable for crankshafts with large clamping diameters, large numbers of eccentric shafts, and large eccentric distances, etc., the present invention proposes a crankshaft Turning tooling

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