Tool for whirlwind milling of square shaft

Abstract

The invention relates to a tool for whirlwind milling of a square shaft. By adoption of the tool for whirlwind milling of the square shaft, the problem of two-round successive milling including a round of rough machining and a subsequent round of finish machining in the prior art is solved. According to the technical scheme, the tool for whirlwind milling of the square shaft comprises a disc body; cutting tools are arranged on the disc body, each circumferential equipartition point is provided with one cutting tool, and the cutting tools are distributed in a radial shape with the center of the disc body as the center; and the blade portion of each cutting tool is located outside the disc body. The tool for whirlwind milling of the square shaft is characterized in that each cutting tool is provided with two tool bodies, namely the rough machining tool body and the finish machining tool body, which are arranged side by side, and the distance from the blade portion of each rough machining tool body to the edge of the disc body is smaller than the distance from the blade portion of the corresponding finish machining tool body to the edge of the disc body. The tool for whirlwind milling of the square shaft has the effects that since the rough machining tool body and the finish machining tool body of each cutting tool are arranged in the front-back direction, rough machining and finishing machining are conducted continuously, using of follow rests is not affected, and workpieces can be supported by the follow rests; and the rigidity of a system can be maintained, and the machining precision can be ensured easily.

Description

technical field [0001] The invention relates to a cutter for whirling a square shaft, in particular to a cutter for whirling a square shaft in which each pair of cutting knives has two cutters. Background technique [0002] For shaft parts, it is often necessary to locally process them into square shafts (including two or more regular polyhedral shafts, the following uses a common hexahedron as an example to describe the principle). If the square shaft structure is longer, it is often processed by the whirling milling process with high processing efficiency and stable hexagonal division accuracy. [0003] The whirling milling tool includes a disc body, on which a tool is installed in the radial direction at equally divided positions on the circumference. During milling, the disc body and the spindle of the machine tool rotate in the same direction at a certain speed ratio, the disc body moves relative to the shaft blank, and the tool cuts figure 2 image 3 The shaded part...

AI Technical Summary

Problems solved by technology

There are problems with this processing method: the surface after rough machining is no longer cylindrical, and the tool holder cannot be used during finishing, the rigidity of the process system becomes worse, the machining accuracy is reduced instead, and the milling efficiency is doubled; There is also the radial repetitive positioning error caused by the radial feed of the machine tool, which increases the instability of the processing size

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