Method of drilling pilot hole of PC panel boring machine

Abstract

A drill positioning method of the PC plate drill; the gravity center coordinates which comprises standard value, overlarge value and over-small value are arranged on the computer of the PC drill; in the process of drilling, the computer can read the coordinates of the gravity center and then receives the pilot hole pattern transmitted by a charge-coupled device CCD; after calculating the coordinates of the gravity center with the pattern, the computer judges the pattern kind according to the preset coordinates of the gravity center and then starts a drill unit to drill. In this way, people can drill according to error or no error produced by different PC plate pilot holes and the requirement of fully automatic drilling without repeated pause for setting is met.

Description

technical field [0001] The invention relates to a method for drilling positioning holes of a PC board drilling machine, in particular to a method for drilling holes according to the error produced by the center of gravity of different PC board positioning holes within the allowable error range. Background technique [0002] Generally, after the lamination process of a multi-layer printed circuit board (PCB) is completed, since the copper foil on the surface will cover the positioning holes (also called hole mark holes) on the original substrate, it is necessary for internal board layers to be used The aligned positioning holes need to use X-ray perspective and integrate image and electronic control technology to correctly guide the drilling unit to drill the positioning holes, and then the following processes (such as mechanical drilling, forming and exposure, etc.) are based on this The positioning hole is used as the reference basis in the manufacturing process, so that al...

AI Technical Summary

Problems solved by technology

[0004] However, after the lamination process is completed, the coordinates of the center of gravity of the holes in the multilayer PC board are likely to have too large or too small errors due to the lamination process of the PC board or its surface due to moisture absorption, resulting in It is necessary to set different coordinate positions (including standard, too large and too small) on the computer of the PC board drilling machine in advance, and then perform standard, too large and too small PC board drilling respectively, that is, drilling standard When setting the coordinate position value, set the standard center of gravity coordinate position on the computer of the PC board drilling machine to meet the standard value of the positioning hole. If you want to drill another too large or too small center of gravity coordinate position, you need to Suspend the drilling operation first, and then set the coordinate position value that is too large or too small on the computer of the PC board drilling machine, and then the drilling can be performed again, and then all the PC boards (including the PC boards with errors) can be drilled. plate) after drilling the hole, it is often necessary to suspend the drilling operation and reset the coordinate position value, resulting in cumbersome and time-consuming operations, which does not meet the requirements of fast and low cost

Images