Head replacement-type cutting tool
A cutting tool, exchange technology, applied in the direction of manufacturing tools, tool workpiece connection, metal processing equipment, etc., can solve problems such as breakage, cutting head breakout, cutting head idling, etc., to improve fracture toughness, reliable contact pressure, and improve thermal conductivity. rate effect
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[0124] Next, the ratio d / D1 of the inner and outer diameters and the outer diameter expansion ratio (D2-D1) / D1×100 (%) of the tool holder 1 in the present invention will be explained using examples. In this embodiment, the head exchange type cutting tool (head exchange type end mill) of the above-mentioned embodiment is used as the basis, and the tool holder 1 in the state before the mounting part 12 of the cutting head 10 is fitted In two head interchangeable cutting tools with the outer diameter D1 of the tip of the holder body 2 of 0.01m (10mm) and 0.02m (20mm), the inner diameter d on the opening side of the mounting hole 4 of the fitting portion 4B The allowable torque relative to the ratio of inner and outer diameter d / D1 when changing is calculated according to the following two cases, that is, as the minimum for cutting, the stress generated in the tool holder 1 is designed to be 100MPa (for example, as For light cutting), and as the upper limit of the s...
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