Metal semi-hole forming production technology

Abstract

The invention relates to the technical field of metal semi-hole machining, and discloses a metal semi-hole forming production technology. The metal semi-hole forming production technology comprises the following steps of 1) preparing a tool; 2) forming a knife hole; 3) performing semi-hole forming processing; 5) determining a forming knife-feeding scheme and carrying out knife feeding; and 5) finally carrying out testing and verifying. According to the metal semi-hole forming production technology, by means of the design of a milling cutter and layout, the distance of the line layers is Min 0.2mm, the distance of anti-welding layer is Min 0.25mm; the copper area outside the board is increased, and the stress of the hole ring is reduced to be extruded inwards; meanwhile, a double-V-shaped two-way walking method is used for forming the cutter path, so that the copper Burr phenomenon caused by the stress problem of the metal half-hole edge when the board thickness is greater than or equalto 0.8MM, the hole diameter is greater than or equal to 0.5MM, and the hole spacing is greater than or equal to 0.45MM (the hole central distance is 0.95mm) can be solved; the effect of no copper Burr and burrs in the forming process is achieved, and the whole process of the production technology is simplified, so that the problem that part of raw copper slag and burrs are generated and the processing quality is influenced when the PCB is milled through half-hole forming and the like is effectively solved.

Description

technical field [0001] The invention relates to the technical field of metal half-hole processing, in particular to a metal half-hole forming production technology. Background technique [0002] CNC lathes can process complex revolving shapes. Milling is to fix the blank and use a high-speed rotating milling cutter to move on the blank and cut out the required shape and features. Traditional milling is mostly used for milling contours and slots, etc. Simple shape features, CNC milling machines can process complex shapes and features, milling and boring machining centers can perform three-axis or multi-axis milling and boring processing, used for processing molds, inspection tools, molds, thin-walled complex surfaces, artificial prosthesis and Blades, etc., milling has been widely used nowadays, and printed circuit boards also need to be milled accordingly. [0003] Printed circuit boards are also called printed circuit boards and PCB boards. According to the number of layer...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a metal half-hole forming production technology, which has the advantages of no copper burr and burrs in the forming process, and solves the problem of partial raw copper slag generated when the PCB board undergoes milling such as half-hole forming. and burrs which affect the processing quality