Device and method for single abrasive grain grinding experiments under assistance of ultrasonic vibration

Abstract

A device for single abrasive grain grinding experiments under the assistance of ultrasonic vibration comprises a super precision machine tool, a tool setting system, an ultrasonic vibration system, a force measurement system, a high-speed camera shooting system and a data processing system. A method for the single abrasive grain grinding experiments under the assistance of ultrasonic vibration comprises the steps of installing a workpiece in an air floatation spindle clamp of the super precision machine tool; utilizing the tool setting system to rapidly accurately perform tool setting; dismantling the tool setting system, starting the super precision machine tool and the ultrasonic vibration system, utilizing the force measurement system to perform on-line detection and recording on single abrasive grain stress conditions in the experiment processing, and transmitting data to a computer; and utilizing the high-speed camera shooting system to perform on-line observation and recording on a abrasive grain movement trail in the grinding process, the microscopic changing process and the material removing process. The device and the method genuinely reflect the grinding process of a whole grinding wheel and can particularly reflect the abrasive grain cutting process under the conditions of ultrasonic grinding and can provide valuable experimental data for manufacture and research of the grinding wheel and a cutting mechanism of the grinding wheel.

Description

technical field [0001] The invention belongs to the technical field of precision ultra-precision machining, and in particular relates to an experimental device and method for single abrasive grain grinding assisted by ultrasonic vibration. Background technique [0002] At present, with the development of precision ultra-precision machining technology, grinding occupies an immeasurably important position, especially the grinding of difficult-to-machine materials, and the grinding process assisted by ultrasonic vibration has its unique advantages. So as to be widely used. The essence of the grinding process is the comprehensive effect of sliding, plowing and cutting completed by a large number of abrasive particles discretely distributed on the surface of the grinding wheel, and the mechanism of various physical and mechanical phenomena is complex. For grinding research, there are generally two ways: one is to start from the macroscopic perspective, regard the grinding wheel ...

AI Technical Summary

Problems solved by technology

Although the experimental research on single abrasive grain grinding has a long history and has achieved considerable achievements, the previous experimental processes were all based on the idea of ​​single abrasive grain scratching and single abrasive grain indentation. It can study the static change of a single abrasive grain in a certain state, and the process cannot intuitively show the grinding process of a single abrasive grain, and it is faced with cumbersome tool installation and troublesome tool setting process, and the single abrasive grain tested by the above method The speed of the grinding experiment is far lower than the actual grinding speed of a single abrasive grain, and the repeatability of the results is not good. It is also very difficult to detect the physical quantities in the cutting process and analyze the microscopic changes of the abrasive grains.

In addition, the above test method can only partially simulate the grinding process of a single particle under conventional grinding conditions, but cannot simulate the grinding process simulated under ultrasonic vibration grinding.

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