Electric pulse tool
AssigneeAtlas Copco Industrial Technique AB
InventorAdam Klotblixt
Life of this patent
Estimating the term…
Abstract
An electric pulse tool is configured to deliver torque in pulses on an output shaft thereof and includes an electric motor to drive the output shaft. The electric pulse tool is configured to, for each period, provide a current pulse to the electric motor during a current-on time interval, pause a current feed to the electric motor after the current-on time interval until an end of a torque pulse, determine a width of the torque pulse, and continue pausing the current feed to the electric motor during a pause interval from the end of the torque pulse. The pause interval is determined based on the width of the torque pulse such that a wider torque pulse results in a wider pause interval and a narrower torque pulse results in a shorter pause interval.
Claims17
An electric pulse tool configured to deliver torque in pulses on an output shaft thereof, the electric pulse tool comprising:
- an electric motor configured to drive the output shaft;
- and
- a processor and a memory storing instructions that are executable by the processor to control the electric pulse tool to perform operations including, for each of a plurality of periods:
- providing a current pulse to the electric motor during a current-on time interval;
- pausing a current feed to the electric motor after the current-on time interval until an end of a torque pulse generated due to the current pulse;
- determining a width of the torque pulse;
- determining a width of a pause interval, which is an interval from the end of the torque pulse to a beginning of a next current pulse, such that a wider torque pulse results in a wider pause interval and a narrower torque pulse results in a shorter pause interval;
- and
- continuing pausing the current feed to the electric motor during the pause interval.
Dependencies are inferred from the claim text.