Large CNC Crankshaft Main Journal Cylindrical Grinding Machine

Abstract

The invention provides a large-sized numerical control cylindrical grinding machine for a crankshaft main journal, which can reduce imbalanced centrifugal inertia force of the revolving crankshaft during grinding, so as to reduce torsion and bending deflection of the crankshaft, meet the roundness processing requirement of the main journal, and realize grinding of a common outer circle of the large-sized crankshaft. The large-sized numerical control cylindrical grinding machine comprises a workpiece lathe bed and a grinding wheel lathe bed, wherein the workpiece lathe body is provided with a headstock and a tailstock; a grinding carriage is arranged on the grinding wheel lathe bed and correspond to the workpiece lathe body; the large-sized numerical control cylindrical grinding machine is characterized by that the grinding carriage is connected with the grinding wheel lathe body through a carriage; the carriage is connected with the grinding wheel lathe body through a guide rail; the grinding carriage is connected with the carriage through a servo motor and a ball screw; a narrow central frame is arranged on the workpiece lathe body; the headstock is fixed at one end of the workpiece lathe body; the tailstock is connected with the workpiece lathe body through the guide rail.

Description

technical field [0001] The invention relates to the field of CNC machine tool automation, in particular to a large-scale CNC crankshaft main journal cylindrical grinder. Background technique [0002] Today's world is in the era of vigorous development of modern manufacturing industry, and high-precision CNC machine tools are an important factor for realizing advanced technology. With the increasingly sophisticated and complex processing technology, the common practice of crankshaft main journal grinding is to use a large cylindrical grinding machine to modify the processing, but because the bending degree and torsional rigidity of the crankshaft are very poor, the crankshaft rotating during grinding will be It produces a large unbalanced centrifugal inertial force, increases the torsion and bending deformation of the crankshaft, affects the roundness of the main journal, and makes it unable to meet the processing requirements. Ordinary cylindrical grinding machines for larg...

AI Technical Summary

Problems solved by technology

With the increasingly sophisticated and complex processing technology, the common practice of crankshaft main journal grinding is to use a large cylindrical grinding machine to modify the processing. However, due to the poor bending and torsional stiffness of the crankshaft, the crankshaft rotating during grinding will It produces a large unbalanced centrifugal inertial force, increases the torsion and bending deformation of the crankshaft, affects the roundness of the main journal, and makes it unable to meet the processing requirements

Ordinary cylindrical grinding machines cannot process large crankshafts with large gyration radius and long length.

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