The influence of properties of printed circuit board resin and filler on drilling force

Abstract

Purpose The purpose of this paper is to study and obtain the influence of resin and filler properties of printed circuit board (PCB) on the drilling force during micro drilling. Design/methodology/approach Experiments were carried out to study the influence of PCB on micro-hole drilling force under high spindle speed. A drilling force measurement system was applied, and then, the influence of resin and filler properties of PCBs on the force was analyzed. The proportion of resin and filler in the PCB was defined as four levels, and the influence of PCBs based on the drilling force measurement was summarized. Findings The drilling force decreased with the decrease in the feed rate, and lower filler (16-30 per cent) and average resin (31-50 per cent) would have a positive impact on the drilling force. At the same time, the size of uniform and fine fillers would help to reduce the drilling force. Originality/value The drilling force measurement system was applied, and the influence of PCBs on force was analyzed, which could provide a reference value on the optimization of the drilling force during micro drilling.

Characterization of Printed Circuit Board Micro-Holes Drilling Process by Accurate Analysis of Drilling Force Signal

“…Malekian et al [10] used a fuzzy neural network method to fuse the acceleration signal, cutting force signal and acoustic emission signal together to establish a micro-milling cutter wear prediction model. Although the SNR of the drilling force signal obtained by directly processing the observed signal with a low-pass filter was improved, the reliability of the denoising signal as online diagnosis of bit status is questionable [11]. Therefore, the completion of the accurate characterization of drilling force was of great research value for drill bit breakage prediction.…”