To provide a control method and a device devised to certainly eliminate lowering of an engaging value due to erroneous operation of a user as well as to constantly perform the optimum engaging value within a working material even when a characteristic of the working material is unknown at the time of starting on a hand held machine tool of a hammer drill, etc., free to drive under different driving conditions.
The machine tool M is driven under a first driving condition (I) of low electric power consumption at the time of starting and it is driven by changing the first driving condition (I) to a second driving condition (II) of high electric power consumption after specified time passes on this control method and this device as the working material is worked under the optimum conditions by automatically controlling the hand held machine tool M of the hammer drill, etc., free to drive under different driving conditions.
| JPH0567411 | [Name of device] Electric drill |
| JP5808765 | Drilling machine |
MARK FRITZ
BULLE BERNARD FAVRE
HOFBRUCKER THOMAS
DOHM STEFFEN
