Title:
METHOD OF MAKING PUNCHING DIES
Document Type and Number:
WIPO Patent Application WO/1986/005732
Kind Code:
A1
Abstract:
A method of fabricating punching dies consists in first making a pack of parts of a desired profile to be used as positive electrodes-instruments. The working parts of the punching die are preliminarily subjected to mechanical processing. The positive electrodes-instruments are provided with technological openings, then one of the positive electrodes-instruments is used for marking the working parts of the die after which the dimensions of the working profile of that electrode-instrument are diminished mechanically or chemically and the latter is used for rough electro-erosion machining of the matrix and the lifter. The second positive electrode-instrument is used for finish electro-erosion machining of the matrix and the lifter. The third positive electrode-instrument is used for burning-through a pack of negative electrodes-instruments in which technological openings are made. The negative electrodes-instruments are used for rough and finish machining of the punch and the pusher.
Inventors:
RUDNEV IVAN EFIMOVICH (SU)
KULIKOV VIKTOR VLADIMIROVICH (SU)
KULIKOV VIKTOR VLADIMIROVICH (SU)
Application Number:
PCT/SU1985/000026
Publication Date:
October 09, 1986
Filing Date:
March 27, 1985
Export Citation:
Assignee:
VOLZH OB PROIZV LEGKOVYKH AV (SU)
International Classes:
B23H9/00; B21D37/20; B23H7/22; B23H9/12; (IPC1-7): B23H9/12
Other References:
V.S. Mendelson et al: "Tekhnologiya izgotovleniya shtampov i press-form", 1982, Mashinostroenie (Moscow), page 78
B.A. Artamonov et al: "Razmernaya elektricheskaya obrabotka metallov", 1978, Visshaya skhola (Moscow), page 132
B.A. Artamonov et al: "Razmernaya elektricheskaya obrabotka metallov", 1978, Visshaya skhola (Moscow), page 132
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