Compound positioning and cutting spiral cutter

Abstract

The invention provides a compound positioning and cutting spiral cutter, and mainly relates to a machine twist drill for machining. The spiral cutter is high in stability and heat radiating efficiency and long in service life and can be easily positioned when used for drilling and processing. The spiral cutter comprises a cutter head and is characterized in that the height relationship between an anti-crack slitting table or an efficient slitting table and an adjacent efficient slitting table on the inner side is defined, the included angle between a compound spiral cutting face and an adjacent compound positioning resolving table is greater than or equal to 90 degrees, a centering chamber and a rear cutting face of a drill tip are intersected to form an included angle of less than or equal to 120 degrees, or the height of the adjacent compound spiral cutting face is greater than or equal to 0.01 mm or smaller than four fifths of the thickness of discharged chips, or less than or equal to the height of the product of 9 times of the cutting feed amount, or the width of the anti-crack slitting table is greater than 0.6 mm or less than or equal to one third of the diameter of the cutter, or a spiral groove is formed in the compound spiral cutting face.

Description

Technical field: [0001] The invention relates to a helical tool for compound positioning and cutting, which is used in drilling machine processing and fitter maintenance. Background technique: [0002] At present, the twist drills used in mechanical processing are composed of chisel edge, cutting edge, helical secondary edge, and side edge. The cutting edge and secondary edge generally have a single structure, and the centering structure is poor. A large amount of heat is easily generated when (milling) a workpiece with higher hardness, which causes the hardness of the cutter head to decrease, causing the wear of the cutter head. It is symmetrical when working, and the cutting amount is generally only tens of microns to 1 mm, so it is difficult to grasp the angle and height during manual grinding. In addition, the precision of these twist drills and the processed holes is unqualified, which is easy to There are waste products, and at the same time, when processing harder wo...

AI Technical Summary

Problems solved by technology

[0002] At present, the twist drills used in mechanical processing are composed of chisel edge, cutting edge, helical secondary edge, and side edge. The cutting edge and secondary edge generally have a single structure, and the centering structure is poor. A large amount of heat is easily generated when (milling) a workpiece with higher hardness, which causes the hardness of the cutter head to decrease, causing the wear of the cutter head. It is symmetrical when working, and the cutting amount is generally only tens of microns to 1 mm, so it is difficult to grasp the angle and height during manual grinding. In addition, the precision of these twist drills and the processed holes is unqualified, which is easy to There are waste products. At the same time, when processing hard workpieces, there are also problems of chipping of the cutting edge or chipping, resulting in work-related accidents.

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