A data processing method for the stretching coefficient of printed board drill tape

Abstract

The invention relates to a printed board drilling band drawing coefficient data processing method. The printed board comprises a unit plate and a test strip. The data processing method comprises the following steps: 1) On four corners of the test strip, drilling drill holes whose number is one third of a total number of the drill holes as a proportion of 1:1, comparing a hole position deviation so as to calculate a preliminary drilling band drawing coefficient and then executing a step 2; 2) Drilling the drill holes whose number is one third of the total number of the drill holes according to the preliminary drilling band drawing coefficient, comparing the hole position deviation and determining whether the drilling band drawing coefficient accords with a requirement; if the drilling band drawing coefficient accords with the requirement, obtaining the drilling band drawing coefficient; if the drilling band drawing coefficient does not accord with the requirement, executing a step 3; 3) Continuously drilling the residual one third of the drill holes according to the drilling band drawing coefficient of the step 2, comparing the hole position deviation and returning to the step 2. Compared to the prior art, by using the method of the invention, there are the following advantages that cost is saved; the method is visual; a result is accurate and so on.

Description

technical field [0001] The invention relates to a technology related to the stretching coefficient of a drill tape of a printed board, in particular to a data processing method for the stretch coefficient of a drill tape of a printed board. Background technique [0002] Because the plate will have the effect of expansion and contraction after baking and pressing, it will bring a lot of trouble to the control of drilling accuracy. At present, the industry determines the tensile coefficient of the drill tape, generally by testing the expansion and contraction coefficient of the film to determine the tensile coefficient of the drill tape, or first take a first board to drill holes at a ratio of 1:1, and then start drilling after confirming the stretch coefficient Holes, neither of these two methods can directly obtain the actual stretch coefficient, which will cause a waste of cost, especially for some high-rise boards and special material boards, the cost is higher. Contents...

AI Technical Summary

Problems solved by technology

[0002] Because the plate will have the effect of expansion and contraction after baking and pressing, it will bring a lot of trouble to the control of drilling accuracy

At present, the industry determines the tensile coefficient of the drill tape, generally by testing the expansion and contraction coefficient of the film to determine the tensile coefficient of the drill tape, or first take a first board to drill holes at a ratio of 1:1, and then start drilling after confirming the stretch coefficient Holes, neither of these two methods can directly obtain the actual stretch coefficient, which will cause a waste of cost, especially for some high-rise boards and special material boards, the cost is higher

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