Manually operated electric tool

摘要

Hand-guided electric tool comprises a drilling tool (2) with a high frequency vibrator (3) acting on the drilling tool. The drilling tool is matched in its own oscillating frequency to the frequency of the vibrator. The drilling tool is formed as a drilling pin (17) which is provided in a drill hole produced by the pin using a high frequency oscillation. An independent claim is also included for a method for drilling a drill hole in rock or similar material such as concrete or brickwork using the above electric tool. Preferred Features: The electric tool has a tensioning device (5) for the drilling tool in the form of a quick action device. The tensioning device is a pair of tensioning tongs.