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Funkenerosion Mit Statischen Impulsgeneratoren

Funkenerosion Mit Statischen Impulsgeneratoren

          
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About the Book

Für das elektroerosive Abtragverfahren haben sich in den letzten Jahren haupt- sächlich transistorgcsteuerte Impulsgeneratoren durchgesetzt und die vorhan- denen Schwingkreisgeneratoren weitgehend abgelöst. Obgleich der schaltungs- technische Aufwand weitaus gröBer ist, überwiegen beim gesteuerten Generator die V orteile des geringeren ElektrodenverschleiGes im Schruppbereich sowie der höheren Abtragleistung. Neben Leistungstransistoren, die vor aIlem in ihrer maximalen Betriebsspannung auf 60-100 V beschränkt sind aber auch als schaltbaren Maximalstrom nur 10-15 A erreichen, können Thyristoren als gesteuerte Schalter in einem Impuls- generator eingesetzt werden. Der Thyristor hat den V orteil groBer schaltbarer Ströme, die heute bis zu 800 A bei 1200 V Sperrspannung betragen. Demgegen- über besteht der Nachteil, daB ein Thyristor nicht wie ein Transistor bei fehlender Aussteuerung sperrt, sondern durch eine Unterbrechung der positiven Anoden- spannung für die typische Freiwerdezeit der ZeIle gelöscht werden muB. Diese Löschung muB durch eine äuBere Beschaltung, den sogenannten Löschkreis, er- folgen. Der Entwurf und die Berechnung eines thyristorgesteuerten Impulsgenerators ist Gegenstand des ersten Teiles dies es Berichtes. Im zweiten Teil werden Entlade- vorgänge sowie Probleme der Vorschubregelung behandelt. Die Vorschubrege- lung der Werkzeugelektrode wirft besondere Probleme auf, da einmal der Ver- steIlbereich der Impulsenergien wesentlich erweitert wurde, zum anderen abet auch mit wesentlich höheren Tastverhältnissen, als einem erhöhten zeitlichen Materialabtrag, gearbeitet wird.


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Product Details
  • ISBN-13: 9783663063186
  • Publisher: Vs Verlag Fur Sozialwissenschaften
  • Publisher Imprint: Vs Verlag Fur Sozialwissenschaften
  • Edition: 1967 ed.
  • Language: German
  • Returnable: N
  • Spine Width: 6 mm
  • Width: 170 mm
  • ISBN-10: 3663063186
  • Publisher Date: 01 Jan 1967
  • Binding: Paperback
  • Height: 244 mm
  • No of Pages: 104
  • Series Title: Forschungsberichte Des Landes Nordrhein-Westfalen
  • Weight: 186 gr


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