Determining method for surface roughness of grinding of microcrystallite glass ceramic

Abstract

The invention discloses a determining method for the surface roughness of grinding of microcrystallite glass ceramic. The determining method includes the steps that firstly, the maximum undeformed chip thickness is obtained; secondly, the ductility-ductile brittleness critical depth and the ductile brittleness-brittleness critical depth are obtained; thirdly, a composite grinding factor is obtained; fourthly, an empirical constant, a brittle fracture coefficient, a ductility-brittleness fracture coefficient, an empirical constant x, the brittleness fracture factor and the ductility-brittleness fracture factor are obtained; and fifthly, the surface roughness is determined according to parameters in the first step, the second step, the third step and the fourth step. According to the determining method for the surface roughness of grinding of the microcrystallite glass ceramic, the relevant coefficient of the surface roughness is determined, a mathematical model of the maximum undeformed chip thickness and the surface roughness of the microcrystallite glass ceramic is established, the influence relation of the grinding condition parameters of the microcrystallite glass ceramic on the surface roughness of grinding is determined, and the determining method is suitable for explaining the molding mechanism of the surface roughness of grinding of the microcrystallite glass ceramic.

Description

technical field [0001] The invention relates to a method for determining the grinding surface roughness of glass-ceramic ceramics, and specifically belongs to the technical field of engineering ceramic processing. Background technique [0002] Grinding belongs to finishing machining in mechanical processing, with less processing volume and high precision. It is widely used in the machinery manufacturing industry. A large number of regularly arranged cracks often appear on the surface that is basically perpendicular to the grinding direction during grinding, that is, grinding cracks. It not only affects the appearance of the workpiece, but more importantly, directly affects Workpiece quality. [0003] Engineering ceramics have excellent properties such as high strength, high temperature resistance, wear resistance, and oxidation resistance, and have broad application prospects in aerospace, defense industry, machinery and other fields. Grinding is the main processing method...

AI Technical Summary

Problems solved by technology

Because glass-ceramic is different from the previous engineering ceramics, its surface forming mechanism is more complicated. There are no relevant reports on the parameters of glass-ceramic grinding conditions and the influence of grinding conditions on the surface roughness of processing.

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