Patent ID: 9505097
Filing Date: 2016-11-29
CPC Classification: B23Q,B25D,B25F

Claim Text:
1. A hand-held power tool configured to drive a removable tool bit about a longitudinal axis, the power tool comprising: a tool body; a tool holder configured to removably hold the tool bit; a motor that is housed in the tool body, the motor configured to rotatably drive the tool bit; a torque transmission path connecting the motor to the tool holder; a first sensor that detects a first driving information corresponding to a kinetic movement state of the tool body when the tool body is rotated around the longitudinal axis in the event of a working operation of the power tool; a second sensor that detects a second driving information corresponding to an output torque of the tool bit driven by the motor; and, a controller that controls the power tool, wherein the controller is connected to the first sensor and the second sensor, wherein the controller calculates a holding information corresponding to holding force of the user to hold the tool body based on the first driving information and the second driving information, and controls the driving of the power tool based on the holding information.