High-precision chamfering machining die and method

Abstract

The invention provides a high-precision chamfering machining die and method, which are used for forming chamfers on reinforcing plates. The die comprises an upper die and a lower die, the upper die comprises a press-fit flat plate, the lower die comprises at least one concave forming cavity, a chamfering area is arranged in each forming cavity, each forming cavity is used for fixing and positioning the corresponding reinforcing plate, the chamfering areas are used for forming the chamfers at the edges of the reinforcing plates when the press-fit flat plate presses the reinforcing plates positioned in the corresponding forming cavities, and the lower die comprises a lower die base and a plurality of insert cores. The positioning requirement and the chamfering requirement are met through the forming cavities of the lower die, the chamfers are formed at the edges of the reinforcing plates through downward pressing of the upper die comprising the press-fit flat plate, the positioning requirement of the upper die and the lower die in the chamfering machining process is not high, fine debugging of the upper die and the lower die is not needed, the chamfering effect of the reinforcing plates is guaranteed, machining control is simple and efficient, and the insert cores are in clearance fit with the lower die base, so that the flatness of the bottom surfaces of the forming cavities is convenient to adjust, and the accuracy of chamfering machining of a plurality of reinforcing plates at the same time is ensured.

Description

technical field

[0001] The invention belongs to the technical field of precision processing, and in particular relates to a high-precision chamfering processing mold and method. Background technique

[0002] In the FPC flexible circuit board industry, the flexible board has high flexibility, but its strength is insufficient. To address this shortcoming, it is necessary to add a reinforcing board to a special part of the flexible board to strengthen the structural strength of the flexible board. In order to ensure the strengthening effect and prevent the burrs on the edge of the stiffener from piercing the soft board and affecting the circuit performance of the soft board, it is necessary to chamfer the edge of the stiffener.

[0003] In the prior art, only a single reinforcing plate can be chamfered at one time, and the work efficiency is low. Moreover, due to the small size of the reinforcing plate, the chamfering size is smaller, which requires high flatness of the mold, a...

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