What are the types of characteristics of holemaking tools?

There are many drilling tools, mainly ordinary twist drills, indexable shallow hole drills and flat drills. Ordinary twist drills are usually used for drilling with machining centers, which are mainly composed of working parts and shanks. The tool shank part is straight shank and taper shank. The shank of the straight handle tool is mainly the spring chuck shank, which has the advantages of automatic centering and automatic elimination of deflection, so it is best to use this type of small size tool. The working part includes a cutting part and a guide part, as shown, the cutting part of the twist drill has 2 main cutting edges, 2 secondary cutting edges, and 1 horizontal edge. The guide part of the twist drill plays the role of guiding, polishing and chip removal and conveying cutting fluid. Twist drill is generally used for rough machining of holes with low precision, because the fixture used in the machining center does not have a drilling sleeve centering guide, the drill bit is prone to deflection movement when rotating and cutting at high speed, and the horizontal edge of the drill bit is long, so when drilling, the center hole should be drilled with the center to correct the drill bit.

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What are the common drilling tools?

The machining tools for holes are: drill bits, scratch drills, boring cutters and other drill bits: you can drill holes directly on the surface of the object;

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The structure of the working part of the tool

There are three types of structure of the working part of the tool: integral type, welding type and mechanical clamping type:

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The structure of the tool

The structure of various tools consists of a clamping part and a working part. The clamping part and working part of the overall structure tool are made on the cutter body; The working part of the toothed tool (tooth or blade) is mounted on the cutter body.

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What are the types of knives?

Tools for machining various external surfaces, including turning tools, planers, milling cutters, outer surface broaches and files, etc.: hole machining tools, including drills, reaming drills, bracing tools, cutting tools and inner surface broaches, etc.;

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