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Do you understand the structural characteristics of various non-standard tools?

Nov 14, 2018

The working part of the non-standard tool has three types: integral type, welded type and mechanical clamp type. The overall structure is to make a cutting edge on the cutter body; the welded structure is to braze the blade to the steel body; there are two kinds of mechanical clamping structure, one is to clamp the blade to the cutter body, and the other is to clamp the blade to the cutter body, and the other The brazed bit is clamped to the body. Titanium Machinery is the main product of the company with rotary top, screw, shaft machining, CNC lathe machining, shank shank and collet post. Carbide non-standard tools are generally made of welded structure or mechanical clamping structure; Porcelain non-standard tools are mechanically clamped. The structure of various non-standard tools consists of a clamping part and a working part. The clamping part and the working part of the non-standard tool of the overall structure are all made on the body; the working part (knife or blade) of the non-standard tool of the insert structure is mounted on the body.

The working part of the non-standard tool is the part that generates and processes the chip, including the blade edge, the structure that breaks or rolls the chip, the space for chip removal or chip storage, and the passage of the cutting fluid. Some working parts of non-standard tools are cutting parts, such as turning tools, planing tools, boring tools and milling cutters; some working parts of non-standard tools include cutting parts and calibration parts, such as drill bits, reaming drills, and reamer. , internal surface broach and taps. The function of the cutting part is to cut the chips with a cutting edge. The calibration part is used to polish the machined surface and guide the non-standard tool.

The clamping part of the non-standard tool has two types of holes and a handle. The non-standard tool with holes is placed on the spindle or mandrel of the machine tool by means of the inner hole, and the torsional moment is transmitted by the axial key or the end key, such as a cylindrical milling cutter and a sleeve milling cutter. Non-standard tools with handles usually have three kinds of rectangular handles, cylindrical handles and tapered handles. Turning tools, planing knives, etc. are generally rectangular shanks; the taper of the taper shank is subjected to axial thrust, and the torque is transmitted by friction; the cylindrical shank is generally suitable for non-standard tools such as smaller twist drills, end mills, etc. The friction generated by the time transmits the torsional moment. Many shank shank with shank are made of low-alloy steel, while the working part is made of high-speed steel to butt weld the two parts.

Since the standard tool is made for the cutting of a large number of ordinary metal parts or non-metal parts, the hardness is increased when the workpiece is subjected to heat treatment, or the workpiece is made of stainless steel, etc. It is very easy to stick the knife, and there are some workpiece surfaces. When the geometry is very complicated, or the surface to be machined has a high roughness requirement, the standard tool cannot meet the processing needs. Therefore, in the process of machining, it is necessary to carry out targeted design on the material of the tool, the geometry of the cutting edge, the geometric angle, etc., which can be divided into two categories that do not need to be customized and need to be customized.