A kind of end mill for fine machining and processing method thereof

Abstract

The invention discloses an end mill used for finish machining and a machining method thereof. The machining method comprises the following steps: respectively machining a straight hole on two ends of a barstock through electromachining to obtain a straight-hole barstock; carrying out one-time clamping, and aligning the external circle of the straight-hole barstock; carrying out one-time clamping, and aligning the external circle of a positive electrode, and machining and positioning a taper hole to form a taper hole end mill; carrying out rough machining to obtain a rough machining end mill, carrying out one-time clamping through a lathe dog to fasten and process the process tail external circle d5 of the rough machining end mill; carrying out semifinishing on the outer side end external circle d1 of the blade part of the rough machining end mill, the end external circuit d2, the neck part external circuit d3 and the handle part external circuit d4, wherein blade part of the end external circuit d2 is near one side the neck part; and machining the blade number of the blade part of the semifinishing end mill, a front mill surface chip groove, a spiral groove and the front angle, the rear angle and the radial bearing angle of an end tooth, wherein the coaxiality of d1, d2, d3 and d4 is not greater than 0.002mm, the diameter size errors of d1 and d2 are not greater than 0.002mm, and the diameter of d1 is greater than or equal to the diameter of d2. Therefore, the problems that a deep appearance abnormal-shaped surface is difficult in directly milling proper product parts and the like can be solved.

Description

technical field [0001] The present invention relates to the technical field of tool processing and manufacturing, and more specifically, relates to an end mill used for finishing, and also relates to a processing method of the end mill used for finishing. Background technique [0002] Among some product parts, there is a kind of larger parts with relatively deep shaped surface, the size tolerance or position tolerance is generally 0.01 ~ 0.02mm, and the roughness is Ra0.8. Because common end mills or end mills are provided with an inverted cone of 0.02-0.04 mm along the axial length of the entire cutting edge, it is difficult to directly process qualified product parts using this type of end mill. Usually, when using an end mill to process a deep profiled surface, there are generally two common traditional processing methods: [0003] The first type is rough milling of relatively deep profiled surfaces, leaving a machining allowance of 0.03 to 0.04mm; and then adopting the ...

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Problems solved by technology

[0010] In view of this, the first purpose of the present invention is to provide a method for processing end mills used for finishing, so as to solve the problems such as the difficulty of direct milling of deep profiled surfaces, etc.

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