Method for testing and evaluation of operating characteristics of vertical machining center

Abstract

The invention discloses a method for testing and evaluation of the operating characteristics of a vertical machining center. The method comprises the steps that a laser ruler fixed to a Y-direction machine body emits and receives laser reflected by a reflector fixed to a Y-direction sliding saddle so that the Y-direction movement of a machine tool is detected; a laser ruler RLD fixed to the sliding saddle emits and receives the laser reflected by a reflector fixed to a workbench so that the X-direction movement of the machine tool is detected; an acceleration sensor fixed to the workbench is used for detecting the acceleration signals of the workbench in the running process along a path in the X, Y and Z directions, so that the detection of the operating characteristics of the vertical machining center is achieved; in the detection process, the no-load constant-speed whole stroke acceleration signals of the vertical machining center are decomposed into instantaneous impact signals andsteady state signals, and meanwhile the operating speed of the vertical machining center includes high speed, intermediate speed and low speed; the transient and steady state motion characteristic indexes of the vertical machining center are extracted separately, and the quantitative evaluation of the operating characteristics of the vertical machining center is achieved.

Description

technical field [0001] The invention belongs to the detection technology of the running characteristics of a numerical control machine tool, and in particular relates to a detection and evaluation method for the running characteristics of a vertical machining center based on a laser scale and a three-way accelerometer. Background technique [0002] The vertical machining center is a precise and complex electromechanical system. Its accuracy is affected by many factors such as material selection, structural design, manufacturing and installation, detection and control, and the environment. The manufacturing and control accuracy requirements are high. Research on the motion characteristics of high-speed vertical machining centers is the basis for realizing high-speed and efficient cutting of metals and improving the quality of workpiece surface processing. The detection and evaluation of operating characteristics can not only reflect the motion status of key mechanisms during t...

AI Technical Summary

Problems solved by technology

The semi-closed-loop machining center is not considered, and its motor torque signal is difficult to obtain and collect, which is greatly affected by environmental factors.

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