A backing plate for PCB drilling and manufacturing method thereof

Abstract

The invention provides a backing plate for PCB drilling and a manufacturing method of the backing plate. The backing plate comprises a honeycomb type core material layer and hard panel layers which are respectively arranged on the upper surface and the lower surface of the honeycomb type core material layer, wherein as the honeycomb type core material is arranged in the middle of the backing plate, the generation of heat by friction of a drill point can be reduced, the drill bit temperature can be lowered, the abrasion of the drill bit can be reduced, the service life of the drill point can be prolonged; furthermore, drilling cuttings which are adhered on a drill point chip space are thrown away from the drill bit with high-speed rotation of the drill bit, and then the drilling cuttings are retained in the honeycomb structure of the backing plate; the honeycomb structure can allow the backing plate to be lighter than the laminated backing plate in common use and to be stored, cut and used more easily; in addition, the particular honeycomb enables the cohesion of the panel and the deformation rate to be lower, and reduces the brittleness, so as to provide convenience for PCB drilling technological operation.

Description

technical field [0001] The invention relates to the technical field of PCB processing and manufacturing, in particular to a backing plate for PCB drilling and a manufacturing method thereof. Background technique [0002] The backing plate is often used in the drilling process in the PCB manufacturing process. The main indicators are thickness and its tolerance, hardness, warpage, etc. The thickness of the backing plate is generally controlled at 1-4mm. If it is too thin, the drilling depth generally reaches If the design requirements are not met, chip removal is poor. If the designed drilling depth needs to be reached, the backing plate can only be used on one side, resulting in material waste; Production efficiency is low. The thickness tolerance is controlled at <±0.5mm, which is to closely fit the backing plate and the PCB board during drilling, to prevent the phenomenon that the gap between the gaps will increase the outlet edge or the drill bit will be broken due to...

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a backing plate for drilling holes in PCB and its manufacturing method, aiming to solve the problem that the backing plate for drilling holes in the prior art cannot be applied to the production of high-grade PCB boards

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