Internal Stress Harvesting Device of Multilayer Annular Array Abrasive Group

Abstract

The internal stress collection device of the multi-layer annular array abrasive particle group, including a cavity for containing and restricting the abrasive particle group, a multi-layer annular strain gauge array for collecting dynamic changes in the abrasive particle group stress, a lower computer, and a display for abrasive particle The display of the group and the driving device with the speed control knob, the cavity is a closed hollow cavity, the cavity is provided with a feeding port with a seal, the orbiting center axis of the cavity is connected with the power output shaft of the driving device; the bottom of the cavity The inner surface is used as the working surface for measuring the stress of the abrasive particle group; the multi-layer annular strain gauge array includes several strain gauges for collecting the stress of the abrasive particle group, the strain gauges are attached to the working surface of the cavity, and the strain gauges are arranged into Multiple concentric rings; the leads of each strain gauge are electrically connected to the signal input pins of the lower computer, and the signal output pins of the lower computer are connected to the signal input pins of the display. The beneficial effect of the invention is that the stress change among abrasive particle groups can be measured in real time.

Description

technical field [0001] The invention relates to a device for collecting internal stress of a multi-layer annular array abrasive particle group. Background technique [0002] Mold making is an important part of the industrial field. In the process of mold-oriented ultra-precision machining, it is necessary to overcome the irregularity of the free-form surface of the mold surface. During the finishing process of the pneumatic grinding wheel, the surface abrasive grain group can elastically support the inner layer while ensuring the local free characteristics of the abrasive grain group, so that it can adapt to the processing of irregular free-form surfaces. The surface abrasive grain group of the pneumatic grinding wheel is composed of abrasive grains and binder, so it has the flexibility of the binder and the cutting force of the abrasive grain group, thus forming a complex double-layer elastic mechanical system of the pneumatic grinding wheel. In order to study this comple...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of observing the change law of the abrasive particle group stress inside the pneumatic grinding wheel, the present invention proposes a multi-layer annular array abrasive particle group internal stress acquisition device that can measure the dynamic change of the abrasive particle group stress in real time

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