Clamping device for extrusion honing of drill bits

Abstract

The invention discloses a clamping device for extrusion honing of drill bits. The clamping device comprises two abrasive material transitional disks, an upper clamp and a lower clamp, wherein inner walls of the two abrasive material transitional disks, the upper clamp and the lower clamp form an inner cavity for viscous abrasive materials to flow; a downward-convex annular bump is arranged at the lower end of the upper clamp; a circle of upper clamping half grooves for clamping the drill bits are uniformly distributed in the annular bump; an annular groove is formed in the upper end of the lower clamp; a circle of lower clamping half grooves for clamping the drill bits are uniformly distributed in the annular groove; the upper clamping half grooves and the lower clamping half grooves are in one-to-one correspondence and jointly form a drill bit clamping groove. The clamping device disclosed by the invention is simple and compact in structure and low in production cost; by means of the viscous abrasive materials which circularly flow through the surfaces of the drill bits, extrusion honing processing of the surfaces of the drill bits is realized, the surface roughness of the drill bits is reduced, the surface quality of the drill bits is improved, and non-destructive grinding of the drill bits is realized; the number of the drill bits which are simultaneously processed is designed by setting the number of drill bit mounting grooves, so that the multiple drill bits can be simultaneously processed.

Description

technical field [0001] The invention relates to the technical field of drill bit surface treatment, and more specifically relates to a clamping device for extruding, honing and clamping the drill bit surface by using an abrasive fluid medium with a certain flow rate and pressure. Background technique [0002] A drill is a tool used to drill through holes or blind holes in solid materials and to ream existing holes. Commonly used drills mainly include twist drills, flat drills, center drills, deep hole drills and casing drills. The drill bit must go through the process of grinding and polishing before use, and the surface roughness treatment process such as grinding and polishing can make the drill bit achieve better surface quality, so that the drill bit can obtain better drilling effect. The existing way to improve the surface quality of the drill bit is usually to use a grinding wheel for grinding, which has a slow processing efficiency and can only process a single drill...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high drill bit surface roughness, slow processing efficiency during drill bit processing, and low surface quality of the drill bit obtained by processing, and provides a method that can reduce the drill bit surface roughness in batches and can greatly improve the drill bit surface roughness. Surface quality, and greatly improve the processing efficiency and processing quality of the drill extrusion honing clamping device

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