• Title/Summary/Keyword: Micro Cutting Machine

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Micro Machining of Titanium Alloy Using Polycrystalline Diamond Tools (PCD 공구를 이용한 티타늄 합금의 미세 가공)

  • Moon, In Yong;Kim, Bo Hyun
    • Journal of the Korean Society for Precision Engineering
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    • v.30 no.3
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    • pp.284-291
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    • 2013
  • Micro cutting of titanium alloy by polycrystalline diamond (PCD) tools was studied. Micro electro discharge machining (MEDM) was used to fabricate customized micro shaping tools from PCD blank. The tool was used to machine micro grooves on Ti alloy and the effects of depth of cut and machining length on tool wear, burr and surface roughness were studied. The shaping tool has cutting edge of a few ${\mu}m$. The crater size of the tool surface was increased with increasing capacitance of EDM machining conditions, which was used to control the surface roughness of the machined micro grooves.

A Study on the Characteristics of Micro Deep Hole Machining in Micro Drilling Machine (마이크로 드릴링 M/C에 의한 미세구멍가공특성에 관한 연구)

  • 민승기;이동주;이응숙;강재훈;김동우
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2001.04a
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    • pp.275-280
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    • 2001
  • Recently, the trends of industrial products grow more miniaturization, variety and mass production. Micro drilling which take high precision in cutting work is requested more micro hole and high speed working. Especially, Micro deep hole drilling is becoming more important in a wide spectrum of precision production industries, ranging from the production of automotive fuel injection nozzle, watch and camera parts, medical needles, and thick multi-layered Printed Circuit Boards(PCB) that are demanded for very high density electric circuitry. This paper shows the tool monitoring results of micro drill with tool dynamometer. And additionally, microscope with built-in monitor inspection show the relationship between burr in workpiece and chip form of micro drill machining.

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Experimental Investigation on Machining Feasibility of Micro Patterns using a Single Crystal Diamond Tool (단결정 다이아몬드 공구를 이용한 미세 패턴 가공성에 대한 실험적 분석)

  • Kim, Hyun-Chul
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.11 no.5
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    • pp.76-81
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    • 2012
  • The continuing demand for increasingly slimmer and brighter liquid crystal display(LCD) panels has led to an increased focus on the role of the light guide panels(LGPs) or optical films that are used to obtain diffuse, uniform light from the backlight unit(BLU). And the most basic process in the production of such BLU components is the micromachining. LCD BLUs comprise various optical elements such as a LGP, diffuser sheet, prism sheet, and protector sheet with micro patterns. High aspect ratio patterns are required to reduce the number of sheets and enhance light efficiency, but there is a limit to the aspect ratio achievable for a given material and cutting tool. Therefore, this study comprised a series of experimental evaluations conducted to determine the machining feasibility in microcutting various aspect ratio patterns on electroless nickel plated die materials when using single-crystal diamond tools. Cutting performance was evaluated at various cutting speeds and depths of cut using different machining methods and machine tools.

Stability Analysis According to Hinge Type Alteration on Micro Stage for Micro Cutting Machine (초정밀 가공기용 마이크로 스테이지의 힌지 형상에 따른 안정성 해석)

  • 김재열;곽이구;심재기;안재신;송경석;한재호
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.993-998
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    • 2002
  • Ultra precision processing technology is the field which is seriously protected its technology by advanced nations. Because of this reason, this technology is very difficult to supply for domestic companies, also domestic companies are revealed the limit of technology development by itself. And then, those are depend on the technology development of advanced nation, domestic companies are not conquer application step with already developed parts. Of course, some cases of its research are succeed. those are included element technology, system technology and so on, for development of ultra precision processing system. To conquer technology holding ultra precision processing accuracy of no level, active research are needed. In this paper, stability of ultra precision cutting unit is analyzed, this unit is the kernel unit in ultra precision processing machine. According to alteration of shape and material about hinge, stability investigation is performed Through this stability investigation, trial and error is reduced in design and manufacture, at the same time, we are accumulated foundation data for un it control.

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Machining characteristics of micro end-mill using high revolution (고속회전을 이용한 마이크로 엔드밀의 가공특성)

  • Kim, Kisoo;Kim, Sangjin;Cho, Byoungmoo;Kim, Hyeungchul
    • 대한공업교육학회지
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    • v.31 no.2
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    • pp.350-363
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    • 2006
  • Recently, the micro end-milling processing is demanded the high-precise technique with good surface roughness and rapid time in milli-structure parts, micro machine parts and molding industry. The cutting conditions of micro end-milling has an effect on surface roughness of cutting surface. Therefore this study was carried out to cut stainless steel using high revolution air bearing spindle and micro end-mill and analyze the cutting condition to get the optimum surface roughness by design of experiment. From this study, surface roughness have an much effect according to priority on depth of cut, revolution of spindle and feed.

A Study on the Development and the Monitoring of Micro Hole Drilling Machine (미소경 드릴링 머신의 시작과 감시에 관한 연구)

  • 백인환;정우섭
    • Journal of Advanced Marine Engineering and Technology
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    • v.18 no.4
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    • pp.62-68
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    • 1994
  • Recently, the trends toward reduction in size and weight of industrial products increased the application of micro hole for manufacturing gadgets of high precision and gave rise to a great deal of interest for micro hole drilling M/C. Quite a few research work is performed on micro drilling on domestic basis compared with the tendency of analyzing cutting mechanism, adaptive control, monitoring of generally available drills of diameter greater than 1mm. This study adresses the design, manufacturing and controlling a micro hole drilling M/C with the overload detection instrument and the step feed mechanism. Controlling and monitoring of the drilling process are acomplished on PC basis for more user interfaces and effectiveness. The test machine of the results of this research shows a good foundation for extending further micro hole machining technique.

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Evaluation of Machining Characteristics of the Micro Grooving for the Mold of PDP Barrier Rib (PDP 격벽 금형 미세 홈 가공 특성 평가)

  • 이은상;김남훈;이득우;김남경;김덕환
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.12 no.4
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    • pp.23-28
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    • 2003
  • This paper describes the machining characteristics of a developed micro grooving machine. Experiments have been conducted on the various grooving condition such as spindle revolution speed, feed rate and depth of groove. V and U-shaped blade tool and STD11 workpiece was used in this study. To evaluate the developed micro grooving machine, AE signal obtained from each experimental condition was analyzed, and cutting stability was compared with the surface state. As a result this study presented the process to optimize grooving condition and possibility of application of AE technique in groove machining.

A Study on the Waviness Compensation System of Ultraprecision Machining (초정밀가공의 파상도 보정시스템에 관한 연구)

  • Kim, Jeoung-Du
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.7 no.6
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    • pp.132-140
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    • 1998
  • Recently, precision machining technology has been developed continuously in order to make high productivity and quality assurance of the precision parts of several industrial fields. Waviness may occur on the surface of the machined parts due to the table motion error and the dynamic cutting mechanism between the tool and the workpiece. The waviness may fall off the form accuracy of the precision machine parts. In the research, a micro cutting device with piezoelectric actuator has been developed to control precise depth of cut and compensate the waviness on the surface of the workpiece. Experiments have been carried out in the precision lathe. The characteristics of the surface profile and cause of the waviness profile have been analyzed and waviness profiles of some cause have been compared with those of experiments.

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A Study on the Microscopic Precision of Machined Surface according to Variation of Machining Environments in High Speed Endmilling (고속 엔드밀가공에서 가공환경 변화에 따른 가공면의 미시적 정밀도에 관한 연구)

  • Kwon, Dong-Hee;Lee, Jong-Hwan;Hwang, In-Ok;Kang, Myung-Chang;Kim, Jeong-Suk
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.15 no.6
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    • pp.50-57
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    • 2006
  • The investigation of microscopic precision in high speed endmilling is necessary for machinability evaluation, and the environmentally conscious machining technology have more important position in recent machining process. The microscopic precision of workpiece is influenced by machining environments variation as cutting fluid type and lubricant method. In this study, the cutting forces according to variation of cooling and lubrication are investigated by specially designed tool dynamometer. And the surface roughness, micro hardness and residual stress are evaluated according to machining environment. The characteristics of damaged layer in environmentally conscious machining and conventional machining using cutting fluid are compared experimentally.