A special compound end mill for the middle frame of a mobile phone and a milling method for the middle frame of a mobile phone

Abstract

The invention discloses a composite end milling cutter special for a mobile phone middle frame and a mobile phone middle frame milling method. The composite end milling cutter special for the mobile phone middle frame comprises a shank part and a cutting edge, wherein the cutting edge comprises a chamfering edge, a peripheral edge and a bottom edge which are arranged in sequence; the peripheral edge is formed by extending the lower end of the chamfering edge vertically downward, and is used for milling the side wall of a middle receiving groove when the chamfering edge mills the chamfer between the face walls; and the bottom edge is flush with the lower end of the peripheral edge, and is used for milling the bottom wall of the middle receiving groove and a middle frame top surface. Based on the above, the composite end milling cutter special for the mobile phone middle frame provided by the invention can mill the side wall of the middle receiving groove and perform chamfering between the face walls, thus saving tool changing time, overlapping time in the process of first milling the side wall and then chamfering, and improving production efficiency. At the same time, the chamferingbetween the face walls can take the side wall of the middle receiving groove as the reference surface, so as to ensure that the chamfering size is stable and even, and improve the yield of the product.

Description

technical field [0001] The invention relates to the technical field of a milling method for a mobile phone middle frame, in particular to a special composite end mill for a mobile phone middle frame and a method for milling a mobile phone middle frame. Background technique [0002] The main cutting edge of the traditional end mill is a cylindrical surface, and the cutting edge on the end face is a secondary cutting edge; the end mill without a center edge cannot be fed along the axial direction of the milling cutter when it is working. [0003] Milling cutters are generally divided into: [0004] 1. Flat end milling cutter, for finishing or rough milling, milling grooves, removing a large number of blanks, and finishing milling of small horizontal planes or contours; [0005] 2. Ball nose milling cutter for semi-finishing and finishing milling of curved surfaces; small cutter for finishing small chamfers on steep surfaces / straight walls; [0006] 3. Round nose milling c...

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Problems solved by technology

[0016] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a special composite end mill for the middle frame of a mobile phone and a milling method for the middle frame of a mobile phone, aiming at solving the need in the prior art to use an end mill to accommodate the top surface and the middle of the middle frame The processing of the side wall of the groove, but the processing of chamfering with a chamfering knife takes a long time and the problem of low production efficiency

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