Numerical control grinding machine for engine crankshaft

Abstract

The invention relates to a numerical control grinding machine for an engine crankshaft, and belongs to the technical field of grinding machines. The numerical control grinding machine is characterized by comprising a machine tool body base, a headstock assembly, a tailstock assembly and a grinding carriage assembly; a longitudinal feeding system assembly and a base plate are arranged on the machine tool body base, and a transverse feeding system assembly is arranged on the base plate; the headstock assembly and the tailstock assembly are oppositely arranged and installed on a workbench connected with the longitudinal feeding system assembly, and the grinding carriage assembly is installed on the base plate through the transverse feeding system assembly; and the headstock assembly and the tailstock assembly jointly clamp and fix the crankshaft, the crankshaft is driven through the headstock assembly, longitudinal displacement of the headstock assembly and the tailstock assembly is adjusted through the longitudinal feeding system assembly, transverse displacement of the grinding carriage assembly is adjusted through the transverse feeding system assembly, and therefore the crankshaft can be ground conveniently. According to the numerical control grinding machine, by controlling a controllable motor, the crankshaft can rotate at a variable speed in the grinding process, and it can be guaranteed that the crankshaft is at a constant speed at a grinding point in the grinding process.

Description

technical field [0001] The invention relates to a numerical control grinding machine for an engine crankshaft, belonging to the technical field of grinding machines. Background technique [0002] The crankshaft is one of the key parts of the engine. The parts have complex structures, large production batches and high precision requirements. The final processing of crankshafts still generally adopts grinding technology. In order to meet the increasing processing requirements of crankshafts, high requirements are put forward for crankshaft grinding machines. When the crankshaft rotates, by controlling the lateral feed speed of the grinding wheel so that it is always tangent to the connecting pin journal, the crankshaft rotates one revolution, thereby realizing the grinding of the connecting pin journal. However, under the condition that the crankshaft rotates at a constant speed, some problems will occur in the grinding process: the actual grinding depth at each tangent point...

AI Technical Summary

Problems solved by technology

However, when the crankshaft rotates at a constant speed, there will be some problems in the grinding process: the actual grinding depth at each tangent point (grinding point) of the connecting pin is different

Therefore, the grinding time of the grinding wheel at each tangent point (grinding point) on the connecting rod journal is different; the relative grinding speed at each tangent point (grinding point) on the connecting rod neck is different; , the magnitude and direction of the speed at the grinding point are different, so the grinding force is also different; quality will have some effect

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