FIELD: typhlos engineering. SUBSTANCE: the device has matrices with aligned holes that accommodate built-up punches with spherical heads. The upper part of the punches is made of non-ferromagnetic material, and the lower one is made of hard magnetic material and is preliminarily magnetized. The device has a punch control member comprising an electromagnetic drive of each punch consisting of a sleeve, washer with coils wound on its both sides, installed in the end parts of the sleeve are magnetic core bushes, and the lower part of the punch serves as the armature of the electromagnetic drive located in the holes of the matrix made of ferromagnetic material. The sleeve, washer, upper and lower bushes are also made of ferromagnetic material. Each coil of the electromagnetic drive is series-connected to the respective isolation diode and makes up an electric circuit of the control matrix connected to the respective outputs of the control unit. EFFECT: enhanced speed of composing of relief-point image. 2 dwg
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Authors
Dates
1999-12-20—Published
1998-03-26—Filed