Grinding experiment method under single grain multi-level speed conditions

Abstract

The invention discloses a grinding experiment method under single grain multi-level speed conditions, relating to the technical fields of material testing and precision machining. The method disclosed by the invention comprises the following steps: preparing a single grain tool, and acquiring the grain surface information by virtue of a microscope; mounting a disc-shaped workpiece on an electric spindle knife handle of a numerical control machine tool, grinding and polishing the workpiece so as to meet the cylindricity and roughness requirements; obtaining different cutting linear velocities by selecting the rotating speed of the electric spindle and the workpiece size, and fixing the single grain tool on a numerical control machine tool worktable; finishing tool setting by virtue of a precise dynamometer and an industrial camera, setting the numerical control parameters according to the test requirements, cutting, measuring the grains and the workpiece by using a microscope, and calculating the grinding ratio, grinding power and other powers by combining a force signal, thus analyzing the grinding mechanism under different process parameters. According to the method disclosed by the invention, the actual cutting action generated by the single grains and the workpieces under different speed conditions can be effectively simulated, particularly an experimental platform is provided for researching the generating mechanism on the grinding surface under high-speed or ultra-high-speed conditions.

Description

technical field [0001] The invention belongs to the technical field of material testing and precision machining, and in particular relates to a grinding experiment method under the condition of multi-stage velocity of single abrasive particles. Background technique [0002] The study of grinding mechanism is a difficult point in the research of precision and ultra-precision machining. Grinding wheel is the key actuator in grinding process, and its surface morphology and mechanical properties play an important role in the surface quality of the workpiece. The surface of the grinding wheel is composed of a large number of irregularly shaped and randomly distributed abrasive grains. Therefore, the essence of the grinding process is a collection of micro-cutting processes completed by these abrasive grains. The cutting behavior of a single abrasive grain is the basic mode of grinding. It is an effective method to explore the complex grinding mechanism. [0003] In terms of exp...

AI Technical Summary

Problems solved by technology

The above experiments provide a basis for in-depth study of the grinding behavior of single abrasive grains. However, in order to make the experiment easier to operate, the abrasive grains used in these methods are all relatively large, avoiding the problem of difficult tool alignment with small abrasive grains, and The test speed is also low, and there is a certain gap with the grinding process of a single abrasive grain on the actual grinding wheel, and it is impossible to carry out high-speed and ultra-high-speed grinding experiments

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