FIELD: measurement technology; material control.
SUBSTANCE: device has cool and hoot electrode, relay for supplying lowered voltage to heating element, thermocouple mounted on hot electrode and connected to it via variable resistor, galvanometer, potentiometer, transformer, unit for analyzing data and mechanism for positioning cutting tool. The mechanism has two mutually perpendicular carriages of longitudinal and transverse movement and is mounted on plate having mechanism for moving a movable throw-back cantilever having built-in hot electrode.
EFFECT: high accuracy in predicting metal-cutting instrument operation capacity.
1 dwg
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