Drilling and rolling combined forming cutter

Abstract

The invention belongs to the field of drilling tools, and relates to a drilling and rolling combined forming cutter. The drilling and rolling combined forming cutter comprises three parts, wherein thefirst part is a drill bit, the second part is a rolling cutter, the third part is a handle, and the three parts are sequentially connected; a drill tip part of the drill bit is provided with two transverse edges; a main cutting edge of the drill tip is a wave-shaped edge, preeminent sharpness and strength are achieved, and chips are discharged more smoothly; two auxiliary cutting edges are arranged on the main rear cutter surface; and two cutting grooves with cylindrical spiral structures are formed in a drill bit body. According to the drilling and rolling combined forming cutter, drilling and rolling are simultaneously machined, so that the number of the machining procedures is reduced, the machining time is shortened, and the machining efficiency is greatly improved; through the optimized groove-shaped structure and the wave-shaped cutting edges, the preeminent sharpness and strength are achieved, and the chips are discharged more smoothly; and the top angle of 140 degrees reducesthe feeding force at the initial stage of drilling and provides excellent self-centering capability, so that the hole machining quality is improved, the hot hardness is improved, and the chip accumulation is prevented.

Description

technical field [0001] The invention belongs to the field of drilling tools, and relates to a drill-roll combined forming knife. Background technique [0002] For deep hole processing with a diameter of less than 30 mm and high surface accuracy requirements, at present, the traditional processing technology of drilling, reaming, rough reaming, fine reaming, and honing is often used. Multiple processes use multiple knives successively. The method needs to change the tool, not only the processing time is long, the efficiency is low, but also the processing cost is high. Contents of the invention [0003] The technical problem to be solved by the invention is that when processing small-diameter deep holes with high surface precision requirements, the production efficiency of the traditional processing technology is low and the processing cost is high. By simultaneously processing the drilling and rolling holes, the processing time can be saved and the The equipment utilizati...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the invention is that when processing small-diameter deep holes with high surface precision requirements, the production efficiency of the traditional processing technology is low and the processing cost is high. By simultaneously processing the drilling and rolling holes, the processing time can be saved and the Equipment utilization rate, while effectively ensuring product quality through one-time processing

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