A kind of ultrasonic plunging cutting tool

Abstract

The invention discloses an ultrasonic slotting and cutting tool. The ultrasonic slotting and cutting tool comprises a tool main body, wherein one end of the tool main body is provided with a positioning surface, a threaded section connected with an ultrasonic amplitude variation rod is arranged on the positioning surface, and a groove is formed in the other end of the tool main body; the groove comprises a conical groove bottom, a cylindrical hole and a frustum-shaped hole, wherein a horn-shaped cutting edge is formed by the frustum-shaped hole and the outer wall, away from one end of the positioning surface, of the tool main body, and a wrench groove is formed in the outer wall of the tool main body located between the positioning surface and the conical groove bottom; and at least one chip outlet which penetrates out of the outer wall of the tool main body is arranged at one end of the cylindrical hole close to the conical groove bottom, at least one inclined groove which penetratesout of the outer wall of the tool main body is formed in the inner wall of a hole section, close to the frustum-shaped hole, of the cylindrical hole. According to the machining tool, cutting force ofhoneycomb core slotting and cutting machining is reduced, so that the deformation damage of honeycomb core hole grids is effectively inhibited, and the machining quality and the machining precision are guaranteed.

Description

technical field [0001] The invention relates to a machining tool, in particular to an ultrasonic plunge-cutting tool. Background technique [0002] NOMEX honeycomb core composite materials are widely used in many fields such as aerospace and high-speed trains due to their low density, light weight, high specific strength and specific stiffness, strong impact resistance, and good self-extinguishing properties. To form a honeycomb core component, it is necessary to machine the honeycomb core. In the complex surface processing of honeycomb core, it involves the processing of a large number of small curvature radius arcs and holes. At present, there are mainly two methods for processing honeycomb core materials. One is to use high-speed milling with milling cutters on high-speed machine tools. The strength of the honeycomb is very low, and under the action of the milling force of the milling cutter, the honeycomb wall crush defect often occurs, and the processing quality is po...

AI Technical Summary

Problems solved by technology

At present, there are mainly two methods for processing honeycomb core materials. One is to use high-speed milling with milling cutters on high-speed machine tools. The honeycomb strength is very low, and the honeycomb wall crush defect often occurs under the milling force of the milling cutter, and the processing quality is poor

The second is to use an ultrasonic machine tool to cut and process the honeycomb core with a straight-edged sharp knife or a disc knife. Ultrasonic cutting has a small cutting force and a high surface quality for the honeycomb core. However, for the processing of small curvature radius arcs, only straight-edged pointed knives , while the straight-edge sharp knife has a small radius of gyration during the material removal process, and the two sides of the knife face push the material to be processed seriously, which will also cause quality problems such as crushing

However, the processing effect is not ideal, and the main problems are: ①The honeycomb core material is made of difficult-to-process aramid fiber and other materials, and the tool wears seriously during the processing

In order to ensure the processing quality, the tools need to be replaced frequently, and the cost of such tools is high, which increases the manufacturing cost of the honeycomb core material; ②The existing hollow honeycomb core insert cutting tool does not have the function of chip removal, and the chips of the honeycomb core are quickly accumulated in the The inner hole of the tool needs to be stopped frequently to clear chips, the processing efficiency is extremely low, and the usability is poor; ③The removal of honeycomb core insert cutting material is still based on the high-speed milling principle. It is also easy to cause defects such as honeycomb core collapse, and the accuracy and quality of the processed arc features are poor

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