Calibrating device and calibrating method by adopting resistance strain type turning dynamometer

Abstract

The invention relates to a calibrating device and a calibrating method adopting a resistance strain type turning dynamometer. An octagonal annular resistance strain type turning dynamometer is fixedly arranged on a machine tool cutter rest platform of the calibrating device adopted by the calibrating method; an offset lateral cutting cutter rod is fastened on the octagonal annular resistance strain type turning dynamometer; a simulation cutter head is fixedly arranged on the offset lateral cutting cutter rod; an X-direction loading through hole, a Y-direction loading through hole and a Z-direction loading through hole which extend in the X, Y and Z directions of the offset lateral cutting cutter rod are arranged in the head part of the simulation cutter head respectively; the three loading through holes are located at the position of the cutter tip when the adaptive cutter head is assembled on the offset lateral cutting cutter rod; the calibrating device also comprises an X-direction calibrating device, a Y-direction calibrating device and a Z-direction calibrating device arranged in respective corresponding loading through holes; the X-direction calibrating device and the Y-direction calibrating device both comprise loading ropes, fixed pulley structures and scale pans; and the Z-direction calibrating device comprises a loading rope and a fixed pulley structure.

Description

technical field [0001] The invention relates to a calibration device for measuring the three-direction force that the turning tool is subjected to when it is working, that is, the feed resistance force (X direction), the cutting depth resistance force (Y direction) and the main cutting force (Z direction). The invention relates to a calibration device adopting a resistance strain type turning dynamometer, and at the same time, the invention also relates to a calibration method of the calibration device. Background technique [0002] The resistance-strain turning dynamometer can measure in real time the three-direction forces that the turning tool is subjected to during work, namely feed resistance (X direction), depth of cut resistance (Y direction) and main cutting force (Z direction). [0003] The resistance strain turning dynamometer is mainly composed of elastic elements and resistance strain gauges, and the structures of the elastic elements are mainly straight ribs, ci...

AI Technical Summary

Problems solved by technology

However, its disadvantage is that it is difficult to accurately grasp the direction of the actual applied force (because the force is finally transmitted to the simulated cutter head through the steel ball, and the steel ball and the simulated cutter head are not in contact with a small point, generally at A semi-circular groove is processed on the simulated cutter head to limit the steel ball, so the contact area between the steel ball and the cutter head is relatively large), it is difficult to ensure that the direction of force is consistent with the force direction of the tool tip during actual cutting, Moreover, it is difficult to ensure that the placement of the dynamometer is exactly in the horizontal or vertical direction during specific operations, which is related to the technical level of the specific operator, so the error is relatively large, and the high-precision dynamometer is expensive

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