A review of modern advancements in micro drilling techniques

Abstract

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.

Simulação De Linhas De Transmissão Não Lineares Giromagnéticas Utilizando Modelagem Numérica Unidimensional

“…A remoção dos cavacos produzidos durante o processo de furação é um fator de grande importância, devendo ser levado em consideração no momento de definição dos parâmetros do processo. Quando se trata do processo de micro furação a remoção desta apara torna-se um fator ainda mais crítico, visto que o acúmulo destes nos furos gera aquecimento e tensão adicionais que, podem, culminar na quebra da microbroca (Hasan et al, 2017). (Masuzawa, 2000).…”

“…Fig. 4ilustra o padrão alcançado até o momento para a fabricação de microbrocas, de acordo comHasan et al (2017), as pesquisas no setor de manufatura dessas ferramentas miniaturizadas têm avaliado concomitantemente o aumento da performance e a redução do tamanho.…”

Optimization of CFRP Micro Drilling Parameter using 2-Level Factorial Method Towards Thrust Force

“…In the other hand, most of the high technology industries such as aerospace, electronics, medicine and automobiles are developing rapidly and the design of products become smaller, cheaper and faster as all of these factors are being consumer choice. Therefore, the application of micro drilling has been increase in the industry in order to drill the micro size of the hole diameter [2]. There is no specific definition for the micro drill however, researcher generally define that the drilling process with drills bit diameter in between 1µm and 1mm and the aspect ratio greater than 10 [3].…”

Laser-Scan Lithography and Electrolytic Etching for Fabricating Meshed Pipes of Stainless Steel

“…Recently, various micro-components with three-dimensional (3D) cylindrical shapes are required. They are used as contact-probe springs in testing systems of semiconductor integrated circuits [1], syringe needles with surface textures for detecting their positions when they are stuck into bodies [2], medical stents [3][4][5], surgery tools [6], micro-needles [7] and others [8][9][10][11][12][13][14][15].…”