Impact tool including anvil torque sensing

An impact tool comprising:

• a trigger;
• a motor including a motor shaft;
• an impact mechanism including:
• a hammer coupled to the motor shaft, and
• an anvil configured to receive impacts from the hammer, the anvil including:
• anvil lugs,
• a shaft, and
• an anvil strain sensor configured to sense an anvil strain;
• an output drive device configured to be coupled to the anvil and configured to rotate to perform a task;
• and
• a controller connected to the motor, the controller configured to:
• receive an output signal from the trigger,
• determine an anvil torque based on the anvil strain, and
• control the motor to operate based on the output signal from the trigger and the anvil torque.

A method of controlling an impact tool, the method comprising:

• sensing, via a strain sensing system, a strain applied to an anvil of the impact tool;
• determining, via a controller, a torque applied to anvil based on the strain;
• and
• controlling, via the controller, a motor of the impact tool based on determined torque.