Electronic spindle lock for a power tool
AssigneeMilwaukee Electric Tool Corporation
InventorsGareth Mueckl, Zachary G. Stanke, Jeremy R. Ebner, Timothy R. Obermann, Ryan B. Jipp
Life of this patent
Estimating the term…
Abstract
Electronic spindle lock for a power tool. One embodiment provides a power tool including a housing, a bit receiving portion provided on the housing for receiving a power tool bit, a motor within the housing configured to rotate the bit receiving portion, and a controller coupled to the motor. The controller is configured to enter an electronic spindle lock mode, and detect rotation of the bit receiving portion in a first direction. The controller is also configured to control motor to rotate in a second direction in response to detecting rotation of the bit receiving portion in the first direction.
Claims20
A power tool comprising:
- a housing;
- a bit receiving portion provided on the housing;
- a motor within the housing configured to rotate the bit receiving portion;
- and
- a controller coupled to the motor, the controller configured to:
- enter an electronic spindle lock mode for controlling the motor to engage or disengage the bit receiving portion with a tool bit, and
- activate a spindle lock control loop in response to entering the electronic spindle lock mode, the spindle lock control loop including:
- detecting a torque on the bit receiving portion in a first direction, and
- controlling the motor to rotate in a second direction in response to detecting the torque on the bit receiving portion in the first direction.
A method for operating an electronic spindle lock of a power tool including a motor configured to rotate a bit receiving portion, the method comprising:
- entering, using a controller of the power tool, an electronic spindle lock mode for controlling the motor to engage or disengage the bit receiving portion with a tool bit;
- and
- activating, using the controller, a spindle lock control loop in response to entering the electronic spindle lock mode, the spindle lock control loop including:
- detecting a torque on a bit receiving portion of the power tool in a first direction, and
- controlling the motor to rotate in a second direction in response to detecting the torque on the bit receiving portion in the first direction.
A power tool comprising:
- a housing;
- a bit receiving portion provided on the housing;
- a motor within the housing configured to rotate the bit receiving portion;
- and
- a controller coupled to the motor, the controller configured to:
- enter an electronic spindle lock mode for controlling the motor to engage or disengage the bit receiving portion with a tool bit, and
- control the motor as a brake in response to entering the spindle lock mode,
- wherein the motor generates a counter torque in response to a torque applied to the bit receiving portion.
Dependencies are inferred from the claim text.