Large crankshaft follow-up grinding machine

Abstract

The invention discloses a large crankshaft follow-up grinding machine which comprises a machine body, a headstock, a tailstock, a grinding carriage and at least one central frame. The headstock, the tailstock, the grinding carriage and at least one central frame are supported on the machine body. Headstock and tailstock supporting guide rails and grinding carriage supporting guide rails are arranged on the bed body and are mutually and parallelly arranged, and grinding fluid backflow channels are formed among the guide rails. A grinding wheel on the grinding carriage is fixedly connected to one end of a spindle, the spindle is rotatably supported on a grinding wheel support through a hydrostatic bearing, the other end of the spindle is fixedly connected with a drive belt wheel, and the drive belt wheel is further rotatably supported on the grinding wheel support through a bearing and is in driven connection with a grinding wheel driving motor. The grinding wheel support is movably supported on a carriage through a feed hydrostatic guide rail and is in driven connection with the carriage through a linear motor. The large crankshaft follow-up grinding machine has higher structure rigidity and can meet the movement flexibility, precision and rigidity requirements for the grinding carriage and other parts of large crankshaft machining performed by adopting a follow-up grinding technology.

Description

technical field [0001] The invention relates to a machine tool, in particular to a grinding machine for large crankshaft grinding. Background technique [0002] The large crankshaft is a key part of the multi-cylinder air compressor and engine. It is extremely long and heavy. The eccentricity of each connecting rod journal and the main journal requires a high tolerance. As a finishing process for a large crankshaft, the grinding of a large crankshaft The grinding requirements are very high. Compared with ordinary small crankshaft grinding machine tools, large crankshaft grinding machines require high enough rigidity. The grinding wheel frame is required to be easy to move along the entire length of the grinding machine, and can ensure consistent positional accuracy at different positions. In order to better ensure the grinding requirements of the crankshaft connecting rod journal and the main journal and improve the grinding efficiency, the follow-up grinding technology for ...

AI Technical Summary

Problems solved by technology

[0003] The follow-up grinding technology controls the rotational movement of the workpiece and the lateral feed movement of the grinding wheel, so that the outer circle of the grinding wheel is always tangent to the surface contour of the workpiece to be machined, so as to realize the grinding of the eccentric circle, which requires that the grinding wheel can not only The convenience of movement along the entire length of the grinding machine is consistent with the positional accuracy, and it must also be able to achieve precise and sensitive lateral feed movement. However, the existing crankshaft grinder cannot meet the grinding requirements and overall Rigid requirements

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