Novel micro ball end milling cutter and edge sharpening preparation technology

Abstract

The invention discloses a novel micro ball end milling cutter and an edge sharpening preparation technology of the novel micro ball end milling cutter, and belongs to the technical field of micro milling machining. The overall structure of the milling cuter is mainly composed of a cutter head part composed of a ball end and a cylinder, a conical cutter neck part and a cylindrical cutter handle part. The structure of the ball end part is designed to be a center-symmetrical two-edge structure, the front cutter face is an inclined plane, the rear cutter face is a conical face, and a cutting edgeis formed by a curve formed by crossing the inclined plane and the conical face. By means of the design method, on one hand, the cutter cutting edge strength can be improved, contact friction betweenthe cutter and a workpiece is reduced, accordingly, cutter abrasion is effectively reduced, the cutter service life is prolonged, and the dynamic unbalance value of the cutter is reduced through the symmetrical structure design; and on the other hand, a spiral edge structure of the cylinder part is omitted, the ball end part structure is simplified, the cutter preparation difficulty can be effectively lowered, and the machining quality can be improved. The edge sharpening preparation technology of the micro ball end milling cutter is designed based on a six-axis numerical control tool grinder,a cylinder grinding wheel end face is adopted for edge sharpening of the front cutter face, and meanwhile a specific-angle conical face grinding wheel conical face is adopted for edge sharpening of the rear cutter face. According to the micro ball end milling cutter, the structure is simple, the geometric structure is easy to ensure, accordingly, the machining cost is low, the manufacturing process is simple, meanwhile, the cutter edge strength is high, wear resistance is good, and the milling cutter can be widely applied to micro milling of materials difficult to machine.

Description

technical field [0001] The invention relates to a novel micro ball end milling cutter and a preparation process for sharpening, belonging to the technical field of micro milling. Background technique [0002] At present, the micro-milling cutters used in micro-milling processing mainly include micro-milling cutters with traditional helical-edged ball-end milling cutters in whole or partial proportional reduction and micro-milling cutters with special structures according to different structure types. The design idea of ​​most micro-milling cutters is to simplify the structure of traditional helical-edged milling tools, but in actual micro-milling, due to the existence of scale effects, traditional helical-edged micro-milling cutters show defects that have not been seen in traditional milling , can not meet the requirements of the field of micro-milling. With the miniaturization of parts and the application of some difficult-to-machine materials in the field of micromachinin...

AI Technical Summary

Problems solved by technology

The design idea of ​​most micro-milling cutters is to simplify the structure of traditional helical-edged milling tools, but in actual micro-milling, due to the existence of scale effects, traditional helical-edged micro-milling cutters show defects that have not been seen in traditional milling , can not meet the requirements of the field of micro-milling

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