Bevel edge processing method for multi plate printed circuit board after printing and fluting, and its milling cutter

Abstract

A processing method for the internal recessing after frame bevel edge of the multiplate printed circuit board and the milling cutter structure therefor are provided by using a computerized numerical control machine tool with depth control. The processing method includes the following steps: mounting a working back plate on the workbench of the computerized numerical control machine tool for correcting the depth datum level of the milling cutter; forming a location hole on the multiplate printed circuit board, and mounting a location pin on the working back plate according to the size of the location hole; mounting an upper cover plate on the multiplate printed circuit board; executing a bevel edge programme for controlling the milling cutter of the computerized numerical control machine tool. The milling cutter for the internal recessing after frame bevel edge of the multiplate printed circuit board is characterized in that the angle of the knife edge face is in a range of between 85 deg. and 110 deg.

Description

technical field [0001] The invention relates to a processing method of a printed circuit board, in particular to a processing method for adding a bevel after slotting in the layout of a multi-piece printed circuit board and a milling cutter structure thereof. Background technique [0002] The side section of the traditional printed circuit board plug-in terminal (commonly known as the gold finger) is a vertical section. However, during the use and maintenance of the printed circuit board, it is often necessary to repeatedly insert and pull out. This traditional printed circuit board has a vertical section. , which makes it difficult to insert and pull out, and may cause damage to the surface edge of the gold finger or poor contact due to the user's forceful insertion and extraction, thereby affecting the transmission of signals. [0003] At present, printed circuit boards with beveled edges also appear. However, the manufacture of the beveled edges is performed on a single-p...

AI Technical Summary

Problems solved by technology

[0002] The side section of the plug-in terminal (commonly known as the golden finger) of the traditional printed circuit board is a vertical section. However, during the use and maintenance of the printed circuit board, it often needs to be inserted and pulled out repeatedly. This kind of side section of the traditional printed circuit board is a vertical section. , so that it is not easy to plug in and out, and it may cause damage to the surface edge of the gold finger or poor contact due to the user's hard plugging in, which will affect the transmission of the signal

[0003] At present, there are also printed circuit boards with beveled edges, but the manufacture of the beveled edges is carried out with a single printed circuit board, which greatly increases the manufacturing cost and man-hours

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