| 摘要 |
There is provided a rotary impact tool (1) that includes: a motor (4); a hammer (14) configured to be rotated by the motor; an anvil (15) configured to be intermittently applied with an impact force in a rotation direction by a rotational force of the hammer; a rotation speed detection device (31, 40) configured to detect a rotation speed of the motor; an extreme value pair detection device (31) configured to detect an extreme value pair, which is a pair of a maximum value and a minimum value of the rotation speed, based on the rotation speed detected by the rotation speed detection device; and an impact detection device (31) configured to detect that the impact force is being applied when an extreme value difference, which is a difference between the maximum value and the minimum value, is equal to or more than a first threshold value. |
