Device for evaluating and testing interrupted cutting performance of tools at high speed

Abstract

The invention provides a device for evaluating and testing interrupted cutting performance of tools at a high speed. The device comprises a rotary disk body, a tool bar, a tool rest, a piezoelectric type dynamometer, an infrared temperature detector, an electric charge amplifier and a computer, wherein the tool bar is arranged on the tool rest, the piezoelectric type dynamometer and the infrared temperature detector are fixed on the tool test, the piezoelectric type dynamometer is connected with the electric charge amplifier through a connecting wire, the electric charge amplifier is connected with a data acquisition card in the computer; a clamping part is arranged above the rotary disk body, and an even number of workpiece block installation locations symmetrically distributed at intervals on the same circumference by taking the center of rotation of the rotary disk body as a center, are arranged on the rotary disk body. The testing device can realize the interrupted cutting on the circumference and the cylindrical end face, can be used for the test evaluation of the interrupted cutting performance of the tools, and can realize the tool cutting performance evaluation test at different interrupted degrees and the on-line measurement of the cutting force, the cutting temperature and the service life of indexable blades to be evaluated, thus realization process and method are simple and convenient.

Description

technical field [0001] The invention relates to a performance testing device for high-speed intermittent cutting of a tool, which belongs to the technical field of tool performance testing. Background technique [0002] Intermittent cutting refers to cutting in which the cutting edge is in intermittent contact with the workpiece during the cutting process. The study of cutting force, cutting temperature and tool life in interrupted cutting state has important practical significance for optimizing tool structure and rationally selecting cutting parameters for machining workpieces with interrupted cutting features such as convex edges and grooves. [0003] The current interrupted cutting performance test of tools is mostly by cutting cylindrical workpieces with grooves along the circumferential direction on a lathe (such as figure 1 shown) or a strip-shaped workpiece clamped in a groove. High-speed cutting is an important trend in the research of machining technology in the ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the fact that the current interrupted cutting test device is difficult to realize the cutting test at high cutting linear speed, the fixture is bulky, the production cost is high, the intermittent cutting of the cylindrical end face cannot be performed, and the cutting at different intermittent degrees cannot be realized on the same test device. In view of the insufficient status of performance evaluation, etc., provide a tool interrupted cutting performance evaluation test device for high cutting line speed

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