Machining method and device for guaranteeing flatness of Brazilian disc end faces

Abstract

The invention discloses a machining method and device for guaranteeing the flatness of the Brazilian disc end faces. According to the machining method, a clamping groove with the axis perpendicular to a grinding wheel is arranged in a positioning base, the grinding plane parallel to the vertical plane of the grinding wheel is obtained by preliminarily machining a rock pillar to be ground, and the obtained grinding plane is the final end face I of a Brazilian disc; a positioning plane parallel to the vertical plane of the grinding wheel is machined on the positioning rock pillar, the cut disc rock sample is clamped tightly by a sample hose clamp, tight clamping means that the side face of the Brazilian disc is tightly clamped through the hose clamp, an upper pull strip ring is matched with an upper flower basket bolt, and a lower-pull strip ring is matched with a lower flower basket bolt; and the grinding plane of the disc rock sample is tightly attached to the grinding plane of the positioning rock pillar, the end face to be ground of the disc rock sample is ground, the end face II of the Brazilian disc is obtained, and finally the two parallel grinding planes are obtained. By the adoption of the machining method and device, the flatness of the two grinding planes is guaranteed, the clamping positioning assembly is matched with the sample clamping assembly, and the flatness of the grinding planes is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of Brazilian disc processing technology, and in particular relates to a processing method and a device for ensuring the flatness of a Brazilian disc end face. Background technique [0002] With the rapid development of geotechnical engineering at home and abroad, it is of great significance to study the fracture failure process and mechanism of rock-like brittle materials for related engineering design, construction, and stability evaluation. The tensile strength of rock is an important mechanical parameter of rock. Since the tensile strength of rock is much smaller than the compressive strength of rock, there are many cases in engineering that the failure of rock mass is caused by tension. The International Association of Rock Mechanics recommends that the tensile strength of rocks be tested indirectly by using Brazilian disc specimens, and the machining accuracy of the Brazilian disc specimens has a great ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a processing method and a processing method for ensuring the flatness of the end faces of the Brazilian discs under the condition that the two end faces of the Brazilian discs are separately ground by using one grinding disc on the SCM200 double-end grinding machine and the single-side grinding machine. The device makes the flatness error of the end surface of the disc less than 0.02mm, which solves the problem that when the thickness of the disc is less than a certain size, the axes clamped by the disc twice cannot be guaranteed to be parallel during the grinding process of the two end faces on the grinder, and the grinding out cannot be guaranteed. The flatness of the two end faces meets the requirements and other technical issues

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