A jig for simultaneously grinding two groups of eccentric circles of crankshafts with double throws and its application method

Abstract

The invention discloses a clamp for grinding eccentric circles of two double-throw crankshafts at the same time and a use method thereof. The clamp comprises a first center hole sleeve, first cylindrical pins, a first eccentric plate, a first positioning block, a spline positioning block, a spline positioning rod, a hold-down nut, the crankshafts, a second positioning block, a second eccentric plate, a second center hole sleeve and second cylindrical pins. The two symmetrically-arranged double-throw crankshafts can be machined at the same time, a universal high-precision grinding mechanism is adopted for performing precision grinding on the two eccentric circles of the two double-throw crankshafts at the same time, high precision of the phase angles of the eccentric circles of the two double-throw crankshafts and the eccentric distance between the eccentric circles of the two double-throw crankshafts is guaranteed, consistency between the two double-throw crankshafts is also guaranteed, errors are very small, requirements of transmission parts in small compressors or small engines or precision speed reducers are completely met, and the clamp has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of processing of transmission parts, in particular to a clamp for simultaneously grinding two sets of double-turn crankshaft eccentric circles and a method for using the same. Background technique [0002] Double-turn crankshafts are mainly used for transmission components such as small compressors, small engines, and precision reducers, and are mostly used in groups of two sets of double-turn crankshafts. For double-turn crankshafts, the phase angle of the eccentric circle and eccentricity have higher precision requirements, and more consistent use requirements. [0003] At present, there are mainly the following two methods for processing double-turn crankshafts, as follows: [0004] (1) Use imported high-precision special equipment such as special cam CNC grinder or follow-up grinder for processing. This equipment has high configuration and precision requirements, but the processing efficiency and output...

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to overcome the existing double-throw crankshaft processing method, and to process a single double-throw crankshaft cannot guarantee the phase angle of the eccentric circle on the double-throw crankshaft when two sets of double-throw crankshafts are used in groups. Consistency with the eccentricity, and the error is difficult to meet the requirements of the transmission components

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