A high-speed continuous scratching interference behavior testing machine for single abrasive particles and its application

Abstract

The invention discloses a single-abrasive-grain high-speed continuous scratching and intervening behavior testing machine and application thereof.The testing machine mainly comprises a fixed seat, a workbench, an electric main shaft, a test piece, an X-direction feeding device, a Z-direction feeding device, a clamping device, a tool head, a trimming device, a measuring system, a tool setting gauge and the like; the electric main shaft drives the test piece to rotate, and the surface of the test piece is trimmed through the trimming device; the electric main shaft drives the test piece to rotate, the tool head is driven by the Z-direction feeding device and the X-direction feeding device to feed at a certain cutting depth in the radial direction of the test piece, an abrasive grain scratches on the surface of the test piece, scratches with a predetermined interference degree are formed, and the measuring system collects data in the testing process.According to the single-abrasive-grain high-speed continuous scratching and intervening behavior testing machine and application thereof, the scratching force of the single abrasive grain can be accurately obtained under the high speed condition, the testing precision is high, an intervening behavior of abrasion grains in the high-speed grinding process can be simulated, and relevant testing results can be used for intensive research of a grinding mechanism and optimization of grinding parameters.

Description

technical field [0001] The invention belongs to the field of material testing and precision and ultra-precision machining in mechanical processing, and specifically relates to a high-speed continuous scratching interference behavior testing machine for single abrasive grains and its application. Background technique [0002] The grinding process can be regarded as a cutting process completed by a large number of unevenly arranged and irregularly distributed abrasive particles of various shapes on the surface of the abrasive tool. In scientific research, complex phenomena are often abstracted into a simplified model to explore some essential issues. The cutting effect of the fine abrasive grains that make up the grinding wheel is the basis of the grinding process. As the basic mode of the grinding process, the cutting of a single abrasive grain has become an important means to understand the complex grinding action. In the actual grinding process, the abrasive grains on the ...

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Problems solved by technology

[0003] Many scholars have done a lot of work on the scratching experiment of single abrasive particles, and developed related test methods and devices. However, due to the lack of test methods and test devices, the influence of multiple abrasive particles interference has not been considered. Most of the research on the mutual interference of abrasive particles is still in the simulation stage, such as using Boolean operations to simulate the material removal of the abrasive particle interference process, or using numerical simulation methods to model and analyze the interference process of multiple abrasive particles

There are also a small number of devices that study the mutual interference of multiple abrasive grains, such as arranging multiple abrasive grains at a certain relative angle and radial spacing, which will produce interference effects when scratching, but the radial spacing of multiple abrasive grains The arrangement error is relatively large (resolution 10μm), so when multiple abrasive particles interfere, the control accuracy of the actual interference amount is not higher than 10μm, so only some large-size (greater than 100μm) abrasive particles can be tested for interference, and the equipment structure Complicated, the adjustment process largely depends on the operator's experience, without automatic adjustment and position feedback control, so it is difficult to achieve high-precision interference behavior testing

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