Patent ID: 6516896
Filing Date: 2003-02-11
Classification: B23P,B25B

Abstract:
A method of controlling a torque applying tool to apply a selected torque by controlling a speed of the torque applying tool, the method comprising:calculating a first torque at an end of a deceleration ramp that is a percentage of the selected torque; calculating a second torque at a start of the deceleration ramp that is a percentage of the selected torque; calculating a first speed at the end of the deceleration ramp that is a percentage of a selected speed; periodically determining a peak torque applied by the tool; determining if the peak torque is greater than or equal to the first torque; stopping the tool, if the peak torque is greater than or equal to the first torque and the selected torque; determining if the peak torque is greater than or equal to the second torque, if the peak torque is not greater than the first torque; and calculating parameters descriptive of the deceleration ramp and controlling the speed in accordance with the parameters, if the peak torque is greater than or equal to the second torque.