A T-shaped milling cutter

Abstract

The invention relates to a novel T-shaped milling cutter. The novel T-shaped milling cutter comprises a cutter bar, a necking rod, main cutting edges, auxiliary cutting edges, cutter head rectangular bosses and chip grooves. One end of the clamping cutter bar is connected with the head of the necking rod. The root of the necking rod is connected with cutter head rectangular bosses in a cutter head. The chip grooves are formed in the corresponding cutter head rectangular bosses. The auxiliary cutting edges are ground on the upper surfaces of the corresponding cutter head rectangular bosses. The main cutting edges are ground on the side surfaces of the corresponding cutter head rectangular bosses. A first main rear corner is ground on one side of each main cutting edge. A first auxiliary rear corner is ground on one side of each auxiliary cutting edge. A second main rear corner is ground on the other side of each main cutting edge. A second auxiliary rear corner is ground on the other side of each auxiliary cutting edge. Compared with the prior art, according to the T-shaped milling cutter, the shape of the cutting edges is adjusted to be spiral, the crossing angles of the main cutting edges and the corresponding auxiliary cutting edges are designed to be of a circular angle structure, a suspension structure of a side cavity of a complex thin-wall deep-cavity part can be machined to have the circular angle characteristic, the strength of the complex thin-wall deep-cavity part is improved, and meanwhile the machining precision and the machining efficiency are improved as well.

Description

technical field [0001] The invention relates to the field of machining, in particular to a novel T-shaped milling cutter. Background technique [0002] The flywheel is an attitude control actuator that must be adopted by long-life satellites. The flywheel base is a high-precision, difficult-to-machine complex thin-walled deep cavity part. The side wall of this type of part is a T-shaped side concave cavity structure. The overhang length is 12mm, the side wall is unsupported and thin, the average wall thickness is ≤1mm, the relative rigidity is low, the resection rate is more than 90%, and the processing stress is easy to remain. At the same time, in order to strengthen the strength of the part, the root of the T-shaped side concave cavity structure on the side wall of the complex thin-walled deep cavity part needs to be processed into a rounded feature to avoid failure of the part due to excessive stress. In addition, the existing complex thin-walled deep-cavity parts have ...

AI Technical Summary

Problems solved by technology

In addition, the existing complex thin-walled deep cavity parts have poor processing technology. Under the action of cutting force, clamping force, cutting vibration and other factors, processing deformation is easy to occur, and it is difficult to control processing accuracy and improve processing efficiency.

[0003] Existing T-shaped milling cutters for processing complex thin-walled deep cavity parts are made of high-speed steel, the machining rigidity of the cutter bar is insufficient, and the cutting edge is straight or inclined Vibration and large milling force will be generated during part processing, it is difficult to control the processing accuracy and the processing surface finish is poor, which cannot meet the needs of efficient processing, and can only process the right-angle features of the side concave cavity structure of the part

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