| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drilling device formed of a drilling machine including a drilling spindle 2 in a machine housing 1 and a drilling chuck including a chuck trunk body 3, in which a fastening jaw 7 guided into the chuck trunk body is capable of shifting its position by a screw connection 6 between a screw cutting member 4 and an opposing screw cutting member 5, and a drive sleeve 8 connected to the opposing screw cutting member 5 so as not to rotate and capable of driving by a motor is included, the drilling device can set torque load of the device for each operation mode by only adding a simple structure.SOLUTION: The motor is a DC motor 26 which is brushless and includes a motor controller 28. The motor controller 28 is connected to a sensor 29 for detecting an actuation state via a sensor wiring 30. According to the actuation state detected by the sensor 29, at least one motor parameter is changed by the motor controller 28.</p> |
