Broaching and planing cutter for machining multi-head rifling

Abstract

The invention relates to a machine tool cutter, in particular to a broaching and planing cutter for machining multi-head rifling. The broaching and planing cutter comprises a cutter body, a pluralityof cutter holders and a plurality of cutter heads mounted on the cutter holders in a one-to-one correspondence manner, and the cutter heads are used for broaching and planning workpieces; the cutter body is a cylindrical workpiece with a central through hole, the tail part of the cutter body is mounted on an outer cutter bar of a machine tool, an ejector rod and a taper sleeve are coaxially mounted in the cutter body, the taper sleeve is mounted on the ejector rod in a sleeving manner, the rear end of the ejector rod is connected with an inner rod of the machine tool, and the inner rod of themachine tool is driven by a servo motor in the machine tool; the cutter holders are annularly distributed in the radial direction of the cutter body, and the lower ends of the cutter holders are installed on the outer edge of the taper sleeve. According to the broaching and planing cutter, the taper sleeve is driven by the ejector rod to achieve axial displacement, the effect of synchronous expansion and contraction of the multiple cutter heads is achieved, the ejector rod is driven by the a servo inner rod of the machine tool, numerical control over expansion and contraction of the cutter heads can be completely achieved, and the machining efficiency is greatly improved.

Description

technical field [0001] The invention relates to a machine tool, in particular to a planer tool for processing multi-head rifling. Background technique [0002] The importance of artillery in the military field is very high. As a key component of artillery, the barrel has a large aspect ratio, high material hardness, and complex structure, which greatly increases the difficulty of making the barrel. Rifling processing is an important process in the manufacture of gun barrels. The surface quality and processing accuracy of rifling have a decisive impact on the service life of artillery and the accuracy of striking targets. The essence of artillery rifling is a group of inner helixes. At present, mechanical broaching is mainly used to process rifling by controlling the movement of the tool by mechanical profiling. This is not easy to ensure the accuracy of the broaching trajectory, and it is impossible to complete tool compensation. Contents of the invention [0003] In ord...

AI Technical Summary

Problems solved by technology

This is not easy to ensure the accuracy of the broaching trajectory, and it is impossible to complete the tool compensation

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