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.