Grinding particle restraining device for observing particle force chain

Abstract

The invention discloses a grinding particle restraining device for observing a particle force chain. The grinding particle restraining device comprises an upper transparent layer, a lower transparent layer, a middle-layer grinding particle restraining module clamped between the upper transparent layer and the lower transparent layer, a plurality of stress sensors for measuring stress states of grinding particles and a controller, wherein the middle-layer grinding particle restraining module comprises a cavity for containing photoelastic particles, a baffle and a force application mechanism; a gap is formed in the side surface of the cavity; the baffle is mounted at the gap of the cavity; the force application mechanism is arranged at the bottom of the cavity; an extrusion part of the force application mechanism penetrates through a base plate of the cavity and is in contact with the photoelastic particles; the upper transparent plate, the lower transparent plate, the extrusion part of the force application mechanism, the cavity and the baffle form a middle-layer closed containing cavity for containing the photoelastic particles; the middle-layer grinding particle restraining module is provided with the multiple stress sensors; the stress sensors are connected with the signal input end of the controller; the force application mechanism is connected with the signal output end of the controller. The grinding particle restraining device has the beneficial effects that force chain collection aiming at the photoelastic particles is realized, and the shape can be adjusted according to different processing objects.

Description

technical field [0001] The invention relates to an abrasive particle restraint device for particle force chain observation. Background technique [0002] The abrasive grain layer on the surface of the air pressure grinding wheel is a group of particles with partial freedom. The abrasive grain layer smoothes the surface of the workpiece under the support of the inner elastic layer. Since the abrasive grain layer processes the workpiece in a flexible environment, the mechanical behavior between the grains will change in real time during the machining process. While the abrasive grain group is in a consistent macroscopic motion state with the flexible medium, its interior also There are local microscopic movements, forming a variable distribution of force chains. In order to observe this phenomenon, on the basis of the existing optical research, the photoelastic particles are used to simulate the abrasive particle group, through the action of light source and polarizer, throug...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing abrasive grain restraint device cannot simulate the actual abrasive grain processing situation of the pneumatic grinding wheel and cannot observe the force chain change of the abrasive grain group, an abrasive grain restraint device for particle force chain observation is proposed

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