A Review on Drilling Printed Circuit Boards

Zheng, Lijuan; Wang, Cheng Yong; Yue, Song; Yang, Liang; Qu, Yi-Qing; Ma, Peifeng; Fu, L.Y.

doi:10.4028/www.scientific.net/amr.188.441

Cited by 22 publications

(14 citation statements)

References 29 publications

(48 reference statements)

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“…Zheng et al. [67] reviewed micro drilling in PCB industries, including tool materials and geometries, thrust force and torque, damage and breakage of micro drilling. They mentioned several micro drilling techniques such as EDM, vibration and laser drilling.…”

Section: Introductionmentioning

confidence: 99%

A review of modern advancements in micro drilling techniques

Hasan

Zhao

Jiang

2017

Journal of Manufacturing Processes

161

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The demand for micro drilling with a diameter in a range of a few microns to several hundred microns is increasing in industries such as electronics, aerospace, medicine and automobiles, due to a significant uptake in the use of miniaturised products and devices. In order to satisfy the demand, a number of different micro drilling techniques have been developed. There has been, however, no report which explains, compares and contrasts all of these micro drilling techniques. This study examines the lasts micro drilling methods and techniques, categorises them into different groups, highlights recent developments and new trends, and depicts the future requirements in the field of micro drilling. Both conventional and non-conventional micro drilling techniques used in modern age applications are categorized. Conventional micro drilling makes use of drill bits of different configurations such as twist, spade, D-shaped, single flute, compound drill and coated micro drill, while non-conventional micro drilling involves electrical, chemical, mechanical and thermal means which include laser, EDM, ECM, SACE, electron beam, ultrasonic vibration or combinations of these approaches. We present here, a comparative study of conventional and non-conventional micro drilling techniques in order to show the potential and versatility of various micro drilling methods.

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Section: Introductionmentioning

confidence: 99%

A review of modern advancements in micro drilling techniques

Hasan

Zhao

Jiang

2017

Journal of Manufacturing Processes

161

View full text Add to dashboard Cite

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“…Zheng et al (in press) studied the cutting force of drilling PCB micro holes. Zheng et al (2011b) performed a complete review of drilling PCBs. In this study, several experiments have been performed to study the wear mechanism of micro-drills.…”

Section: Introductionmentioning

confidence: 99%

Wear mechanisms of micro-drills during dry high speed drilling of PCB

Zheng

Wang

Fu³

et al. 2012

Journal of Materials Processing Technology

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“…Yang et al (2011), Yang (2011) studied chip morphology when drilling a 3.2-mm hole in RPCs and found that the chips from the resin/glass fiber cloth layer were continuous chips with five different morphologies. Zheng et al (2012a, 2015, 2012b, 2011) studied the drilling characteristics, drilling force, drilling temperature, tool wear mechanism and hole quality optimization of RPCs. Tang (2012), Tang et al (2011a, 2011b) studied the drilling dynamic performance of the drilling system and presented a simulation of ultra-high-speed drilling of the copper foil layer of PCBs using the finite element method.…”

Section: Introductionmentioning

confidence: 99%

The tool-wear characteristics of flexible printed circuit board micro-drilling and its influence on micro-hole quality

Zheng

Wang

Zhang

et al. 2016

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Purpose Micro-holes are drilled and plated in flexible printed circuit boards (FPCs) for connecting circuits from different layers. More holes, with diameters smaller than 0.3 mm, are required to be drilled in smaller areas with flexible circuits’ miniaturization. The micro-hole quality of micro-drilling is one of the biggest issues of the flexible circuit manufacturers’ production. However, it is not easy to control the quality of micro-holes. The purpose of this study was to conduct research on the tool wear characteristics of FPC drilling process and its influence on micro-hole quality to improve the micro-hole quality of FPC. Design/methodology/approach The tool-wear characteristics of micro-drills after FPC drilling were observed. The influence of spindle speed, feed rate, number of drilled holes and entry board materials on tool-wear was analyzed. The hole qualities of FPC micro-drilling were measured and observed. The relationship between tool-wear and hole quality was analyzed. Findings The result showed that the tool-wear characteristics of FPC micro-drilling was similar to the tool-wear characteristics of rigid printed circuit board (RPC) micro-drilling. Abrasive wear occurred on both the main cutting edges and the chisel edges of micro-drills, even though there was no glass fiber reinforcing the cloth inside FPC. Resin adhesion was observed on the chisel edge. The influence of feed and number of drilled holes on tool-wear was significant. Tool-wear significantly influences the hole quality of FPC. Tool-wear will largely decrease the hole position accuracy of FPC micro-holes. Tool-wear will increase the thickness of PI nail heads and the height of exit burrs. Fracture was the main difference between tool wear of FPC and RPC micro-drilling. Resin adhesion of RPC was much more severe than FPC micro-drilling. Increasing the spindle speed properly may improve tool life and hole quality. Originality/value The technology and manufacturing of FPC has been little investigated. Research on micro-drilling FPC and research data is lacking so far. The micro-hole quality directly affects the reliability of FPC. Thus, improving the micro-hole quality of FPC is very important.

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A Review on Drilling Printed Circuit Boards

Cited by 22 publications

References 29 publications

A review of modern advancements in micro drilling techniques

A review of modern advancements in micro drilling techniques

Wear mechanisms of micro-drills during dry high speed drilling of PCB

The tool-wear characteristics of flexible printed circuit board micro-drilling and its influence on micro-hole quality

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