ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Collection
Years
  • 1
    Electronic Resource
    Electronic Resource
    Experimental Study of Microelectrode Array and Micro-Hole Array Fabricated by Ultrasonic Enhanced Micro-EDM (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 482-487 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Micro electrical discharge machining (EDM), enhanced with ultrasonic vibration, isexplored and assessed as a method for developing microelectrode array, for microelectrode arrayfabricated by LIGA has shortcomings such as complex technology and high price. Based on themechanism of micro-EDM, micro-hole array discharges to fabricate microelectrode array by reversecopying. In the process of reverse copying, the thicker rod electrode can not rotate, resulting inelectric arc and short-circuit occurring easily, so it is necessary to add ultrasonic vibration on theplane plate electrode, in order to exclude debris as soon as possible and stabilize machining process.In the process of machining, four parameters, such as working voltage, working capacity, ultrasonicamplitude and holes spacing, are important to machining efficiency, each parameter has four typicalvalues. In order to reduce experiment times, a scheme of orthogonal experiment was designed withdifferent parameters combination. With result of experiments, the ratio of mean square deviation toerror mean square deviation of each parameter was calculated and significance of each parameterwas obtained, and the best parameters combination was asserted through theoretical calculation.Also, experimental study of using microelectrode array to machine micro-hole array by Micro-EDM was made and influence curve of each parameter was drawn. Finally, 5×5 arrays ofmicroelectrode were obtained, the diameter of single electrode is less than about 30.m and heightto-width aspect ratios is more than 8, moreover, these microelectrode arrays have good coaxialityand surface quality
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.482.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Study on the Influence Factors of Electrochemical Micromachining (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 903-908 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: There are many influence factors of electrochemical micromachining (EMM)development. So the characteristics of EMM technology were analyzed firstly. It was an effectivemethod that the nanosecond pulses voltage was used in EMM, and the nanosecond pulses voltagewas prepared to solve the problems of machining area, using small gap, and machining micro 3Dstructure. Its minimum pulse duration is 5ns, and its voltage, current, and duty ratio can be changedfreely. Moreover, many experiments of EMM were carried into execution. After the phenomenonand results of the experiments were analyzed, the reformative project of experiment was putforward. The feasibility of the project and technique route was testified correctly by the nanosecondpulses voltage on the multifunction machine tool which was manufactured independently. Afterstudying on the influences of EMM technology, the experiences of EMM process will be enrichedand make EMM have a further development
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.903.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Study on Technology of Block Electro-Discharge Grinding with Lower Working Voltage for Fabricating Micro Electrode (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 375-376 (Mar. 2008), p. 303-307 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Micro electrical discharge machining (EDM) with block electro discharge grinding(BEDG), is explored and assessed as a method for developing micro electrode, for wire electrodischarge grinding (WEDG) has shortcoming of low working efficiency, especially in the case ofmicro machining. For fabricating micro electrode by BEDG, mechanics of initial clamping errorsare analyzed, the technology of electrode movement is proposed to compensate the clamping errorsand control the finish size of micro electrodes. On the basis of a great deal of experiments, the effectof working voltage on machining efficiency has been found out and been analyzed theoretically,threshold value of working voltage is determined to be about 30V.As shown by result with thetechnology, at a high machining speed, the minimum diameter of micro electrodes reaches 3*m, itsslenderness ratio is more than 5
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.303.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Study on Technology of Micro-EDM with Lower Working Voltage (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 225-228 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper presents new machining technology of micro-EDM with lower workingvoltage in RC pulse power source. How to control the discharging energy of one pulse supplied byRC power is crucial to the technology of micro-EDM. The process of discharging has been studied,then the feasibility of machining with lower working voltage has been put forward, in order toreduce the discharge energy of one pulse effectively. On the basis of a great deal of experiments,the effect of working voltage on surface quality is studied, also the effect of working voltage onmachining efficiency has been found out and been analyzed theoretically. The result shows thatlower working voltage can reduce the working energy observably, and then improve the machiningsurface quality attended by reducing of machining efficiency. However, there is a good machiningeffect when the working voltage is about 15~20V. Considering working efficiency, a newtechnology of block electro-discharge grinding (BEDG) with lower working voltage has beenapplied. As shown by the experimental result with the technology, the minimum diameter ofmicro-shaft reaches 32m. Moreover, the micro-shaft has very high surface quality of Ra 0.1252mand its coaxial diameter error is controlled within 0.152m
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.225.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...