Extrusion honing device for drill bit

Abstract

The invention discloses an extrusion honing device for a drill bit. The extrusion honing device comprises a shell, an upper clamp, a lower clamp and two honing transition discs. The upper clamp is installed on the lower clamp. The two honing transition discs are installed at the outer side the upper clamp and the outer side of the lower clamp respectively. The two honing transition discs, the upper clamp and the lower clamp are fixed into a whole through a cylindrical pin. A clamping groove used for clamping a caudal peduncle of the drill bit to be machined is formed between the upper clamp and the lower clamp. The two honing transition discs, the upper clamp and the lower clamp are further provided with a through hole which is vertically through and is used for allowing a honing liquid medium to flow through. The inlet end and the outlet end of the through hole are connected with an upper extrusion cylinder and a lower extrusion cylinder respectively. The head of the drill bit to be machined extends out of the upper clamp and the lower clamp and stretches into the through hole. The shell is installed outside the two honing transition discs in a sleeving mode. The extrusion honing device is simple and compact in structure and capable of achieving the extrusion honing machining of the drill bit, reducing the surface roughness of the drill bit substantially, improving the surface quality of the drill bit and achieving damage-free drill bit polishing.

Description

technical field [0001] The invention relates to a grinding and clamping device for a drill bit, more specifically, to a clamping device for extruding and honing a drill bit by using an abrasive flow medium with a certain pressure and flow velocity. Background technique [0002] A drill is a tool used to drill through holes or blind holes on solid materials and to ream existing holes. Commonly used drills mainly include twist drills, flat drills, center drills, deep hole drills and casing drills. [0003] Extrusion honing technology, also known as abrasive flow processing technology, is a new surface polishing and deburring process in modern times, which has a good effect on the polishing and deburring of molds and parts. Squeeze honing is a smoothing method that uses abrasive flow media (viscous abrasives) with a certain pressure and flow rate for honing. It is mainly used to improve some inner holes, curved small holes, cross surfaces, cross holes and irregular opposite T...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of high drill bit surface roughness, slow processing efficiency and low drill bit surface quality during drill bit processing, and provides a method for reducing the drill bit surface roughness, and can greatly improve the drill bit surface quality, and can Drill extrusion honing device that greatly improves processing efficiency and processing quality

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