Kickback control methods for a power tool including a force sensor
AssigneeMilwaukee Electric Tool Corporation
InventorsMaxwell L. Merget, Jessie L. Bernitt
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AssigneeMilwaukee Electric Tool Corporation
InventorsMaxwell L. Merget, Jessie L. Bernitt
Estimating the term…
A power tool including a housing, a motor having a rotor and a stator, at least one grip sensor configured to generate a grip parameter, and a switching network electrically coupled to the brushless DC motor. An electronic processor is connected to the switching network and the at least one grip sensor and configured to implement kickback control of the power tool. The electronic processor is configured to determine a kickback threshold based on the grip parameter, control the switching network to drive the motor, receive a signal related to a power tool characteristic, determine, based on the power tool characteristic being greater than or equal to the kickback threshold, that a kickback event of the power tool is occurring, and control, in response to determining that the kickback event is occurring, the switching network to cease driving of the motor.
A power tool, comprising:
The power tool of claim 1, wherein, to determine that the kickback event of the power tool is occurring, the electronic processor is configured to:
The power tool of claim 5, wherein the electronic processor is further configured to decrement the counter for each measurement of the angular velocity that is determined to be less than the rotation speed threshold.
The power tool of claim 5, wherein the electronic processor is further configured to adjust the counter threshold based on the grip parameter.
A method for kickback control of a power tool having a housing, the method comprising:
The method of claim 9, wherein determining that the kickback event is occurring comprises:
The method of claim 10, further comprising adjusting the counter threshold based on the grip parameter.
A power tool, comprising:
The power tool of claim 16, further comprising an orientation sensor configured to monitor an orientation of the power tool, wherein the electronic processor is further configured to determine the sampling rate based on the grip parameter and the orientation of the power tool.
Dependencies are inferred from the claim text.