Nut runner using induction motor

Details Nut runner using induction motor Nut runner using induction motor

1983-07-19

1985-11-26

Schran, Donald R.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

173 2, B23Q 512

Patent

active

045549800

ABSTRACT:
A nut runner for tightening screwed objects comprising: a driving motor, a driving shaft to be coupled to the screwed objects for driving the same, a reduction gear mechanism provided for transferring the revolution power of the driving motor to the driving shaft, a torque for detecting a torque applied to the driving shaft, and a control circuit for controlling the driving motor by the use of the detected output of the torque detector. In accordance with the present invention, a two-phase induction motor is employed as the driving motor. The control circuit is formed to control the magnitudes, periods and phases of intermittent currents supplied to the field coils of the two-phase induction motor so that the torque of the two-phase induction motor is controlled by the control of the magnitude of the intermittent currents, so that the revolution speed of the two-phase induction motor is controlled by the control of the periods of the intermittent currents, and so that the forward and backward driving directions are switched by the switching of phase relations of the intermittent currents.

REFERENCES:
patent: 2864985 (1958-12-01), Beck
patent: 3892146 (1975-07-01), Yasoshima
patent: 4273198 (1981-06-01), Doniwa

Affiliated with

Also associated with

Rating

Nut runner using induction motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nut runner using induction motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nut runner using induction motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-265836