Automatic tool setting device for numerical control external thread grinder

Abstract

The invention discloses an automatic tool setting device for a numerical control external thread grinder. The automatic tool setting device can realize the thread tool setting motion by a machine tool numerical control system, a numerically controlled grinding carriage transverse motion mechanism, a planker longitudinal motion mechanism, a probe motion mechanism of the invention and embedded special software. A planker doing the motion in the Z-coordinate direction is mounted on a longitudinal guide rail at the rear part of a machine tool, and a grinding carriage doing the motion in the X-coordinate direction is mounted on a planker transverse guide rail. The probe motion mechanism consists of a support, a base, sliding blocks of a linear guide rail pair, the linear guide rails, a slidingplate, a support saddle, a probe with a multi-point sensor and an oil cylinder, and is used for completing the extension and the resetting motion of a probe; and the embedded special software sequentially implements a tool setting program. The device can automatically measure and calculate the coordinate value of the tool setting position of a threaded workpiece, automatically control the tool setting motion, leading the tool setting process to have no need of human intervention, be precise and fast, improve the tool setting precision and the efficiency of the external thread grinder, be conductive to safety protection and solve the deficiencies of manual tool setting.

Description

technical field [0001] The invention relates to a tool setting device of a thread processing machine tool, in particular to an automatic tool setting device of a numerically controlled external thread grinding machine. technical background [0002] In the precision grinding of threads such as traditional trapezoidal screws, ball screws and worms, the grinding wheel setting is usually done manually by workers. Taking ball screw processing as an example, by rotating the feed handwheel of the machine tool transverse feed mechanism, the grinding wheel slowly enters the helical groove rough machined by the threaded workpiece, and then rotates the machine tool longitudinal feed mechanism handwheel to make the grinding wheel follow the workpiece. Move the workpiece slowly in the axial direction until sparks are generated on the side of the grinding wheel touching the helical groove of the workpiece, and then reversely rotate the handwheel of the longitudinal feed mechanism until th...

AI Technical Summary

Problems solved by technology

This manual tool setting method is not only cumbersome, time-consuming, labor-intensive, low in efficiency, and not conducive to labor protection, but also the accuracy of tool setting depends entirely on the operator's experience and operating level. The consistency of workpiece position accuracy and dimensional accuracy is poor, and it is difficult to meet the interchangeability requirements

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