Two-end synchronous driving grinding method and headstock and tailstock special for grinder

Abstract

The invention relates to a two-end synchronous driving grinding method and a headstock and a tailstock special for a grinder, and belongs to the field of machine tools. The technical scheme is that the headstock and the tailstock of the grinder are respectively provided with spindle driving mechanisms which are identical, a reliable numerical-control control system is adopted to control the two spindle driving mechanisms to rotate, each spindle driving mechanism is provided with a servo motor, and a synchronous pulley is arranged at one end of a motor base arranged below each servo motor. A synchronous pulley is also arranged at one end of a spindle box, a spindle unit is arranged in the middle of the spindle box, a compensation claw post-tensioning chuck and a coder are arranged on the spindle unit, a jacking oil cylinder is fixed on an oil cylinder base arranged on the tailstock, and a guide rail pair is arranged between a connection plate and a base of the tailstock. The two-end synchronous driving grinding method and the headstock and the tailstock special for the grinder have the advantages that synchronous driving of two ends of a workpiece is achieved through control and compensation of the control system, and harmful effects caused by torsion deformation, bending deformation and thermal deformation generated by one-end driving are removed. The headstock and the tailstock are novel in design, reasonable in structure, high in positioning accuracy and good in processing reliability.

Description

technical field [0001] The invention relates to a two-end synchronously driven grinding method, a special headstock and a tailstock for a grinding machine, and belongs to the field of machine tools, which can be applied to the grinding process of long shafts exceeding 10 meters and lead screw parts. Background technique [0002] The traditional grinding of long shaft and long screw parts generally adopts the method of clamping the workpiece with a chuck at one end and tightening the top at the other end. This method has the following disadvantages for grinding long shaft and long screw parts: One is that the workpiece will have a certain bending deformation due to improper clamping force during installation; the other is that there will be a large torsional deformation due to one end driving the workpiece during processing; the third is the disadvantage caused by the thermal deformation of the workpiece during processing The impact cannot be eliminated, nor can conventional ...

AI Technical Summary

Problems solved by technology

[0002] The traditional grinding of long shaft and long screw parts generally adopts the method of clamping the workpiece with a chuck at one end and tightening the top at the other end. This method has the following disadvantages for grinding long shaft and long screw parts: One is that the workpiece will have a certain bending deformation due to improper clamping force during installation; the other is that there will be a large torsional deformation due to one end driving the workpiece during processing; the third is the disadvantage caused by the thermal deformation of the workpiece during processing The impact cannot be eliminated, and traditional machine tools cannot compensate

This is also the reason why the precision of screw grinding is relatively low and cannot meet the requirements.

For the grinding process of long screw, the numerical control rate of domestic machine tools is low, and the processing efficiency is not high.

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