Method and device for measuring three-direction cutting force of fast tool servo turning

Abstract

The invention discloses a method and device for measuring three-direction cutting force of fast tool servo turning, and belongs to the technical fields of ultra-precision cutting, cutting force measurement, optical element cutting and the like. The method and device are suitable for measuring the three-direction cutting force of fast tool servo turning. Three pressure sensors distributed in an isosceles triangle shape are arranged on a fast tool servo device in the Y direction, the cutting force can be measured while a workpiece is machined in a reciprocating mode with a high frequency in the Z direction, and through three times of kinetic analysis, the relation between truth values of the XYZ three-direction cutting force and corresponding measuring values can be obtained. The Z-direction cutting force can be measured through the third pressure sensor, the Y-direction cutting force can be measured through identical measurement components of the first pressure sensor and the second pressure sensor, and the X-direction cutting force can be measured through a differential algorithm according to the measuring value of the first pressure sensor and the measuring value of the second pressure sensor. The method and device have the advantages that cutting force measurement is comprehensive and high in accuracy, and interference of piezoelectric stack driving force on cutting force measurement can be avoided.

Description

technical field [0001] The invention belongs to the technical fields of ultra-precision cutting, cutting force measurement, and optical parts cutting processing, and relates to a three-way cutting force measuring method and device for fast tool servo turning. Background technique [0002] The manufacture of complex optical free-form surfaces is an important research content of precision manufacturing, such as the manufacture of non-rotationally symmetric optical free-form surfaces. Non-rotational symmetric optical free-form surface is an optical free-form surface without any axis of symmetry. Optical components with this surface are widely used in civil and military fields, and greatly improve the performance of optical systems. A key technology for processing parts with non-rotational symmetric optical free-form surfaces is fast tool servo. This technology is to install a tool micro-feed servo mechanism with fast high-frequency response capability on the lathe slide, which ...

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Problems solved by technology

[0005] The present invention provides a three-way cutting force measurement method and device for fast tool servo turning to solve the problem that the current fast tool servo device with cutting force measurement function cannot measure three-way cutting force at the same time, and the measured cutting force measurement value contains driving force. force components etc.

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