FIELD: mechanical engineering; impact tools.
SUBSTANCE: proposed impact nutrunner has body and motor fitted in body. Nutrunner contains drive shaft of impact mechanism rigidly connected with output shaft of motor, spindle-anvil with working cams, and striker with cams installed on drive draft of impact mechanism. Nutrunner is furnished with inductance coil, electromagnetic valve with field coil and control unit consisting of comparator, trigger, supply source control button and transistor switch.
EFFECT: provision of accurate control of tightening torque.
2 dwg
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