Crankshaft Grinding Indexing Fixture and Its Using Method

Abstract

The invention discloses a crankshaft grinding indexing fixture. The crankshaft grinding indexing fixture comprises a clamping unit, a supporting unit and crankshafts. The clamping unit comprises a first three-jaw chuck. The inner side of the first three-jaw chuck is fixedly connected with a driving unit. The driving unit is provided with an indexing unit. A pushing unit is arranged on the drivingunit. A power unit is arranged in the driving unit. When the driving unit is matched with the power unit, the power unit drives the driving unit to rotate, and thus the crankshafts are rotated. The two crankshafts can be clamped each time and fastened through the indexing unit, thus, the crankshafts are limited at any rotation angle, and due to the fact that the crankshafts are fastened through the indexing unit, the situation that indexing positioning holes of conventional positioning discs are deformed, and the rotation precision of the crankshafts is affected is avoided.

Description

technical field [0001] The invention relates to the field of crankshafts, in particular to an indexing jig for crankshaft grinding and a method for using the same. Background technique [0002] The crankshaft is one of the most important parts of the engine, and its machining accuracy will directly affect the performance of the engine. At the same time, in order to improve the wear resistance of the crankshaft, the main journal and connecting rod journal of the crankshaft have adopted surface quenching, carburizing and other processes to increase their surface hardness. Grinding is necessary for the finishing of these case-hardened parts, and both the crankshaft's main and connecting pin journals must be ground. [0003] The traditional crankshaft fixture can only clamp one crankshaft at a time, and the processing efficiency is low; the traditional crankshaft indexing device can only limit the rotation angle of the crankshaft through the pre-indexed positioning hole on the ...

AI Technical Summary

Problems solved by technology

[0003] The traditional crankshaft fixture can only clamp one crankshaft at a time, and the processing efficiency is low; the traditional crankshaft indexing device can only limit the rotation angle of the crankshaft through the pre-indexed positioning hole on the positioning plate. °, 180°, and 120° distributed pre-indexing positioning holes, which can only be positioned at three angles of 90°, 180°, and 120°, and cannot be positioned at any rotation angle); the traditional positioning plate is pre-indexed after long-term use The size of the positioning hole is deformed, which affects the rotation accuracy of the crankshaft

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