Drilling device
AssigneeC. & E. Fein GmbH
InventorsDietrich Wieland, Martin Kalb, Werner Grupp, Michael Nothofer
Life of this patent
Estimating the term…
Abstract
In a drilling device, a holder is provided that is displaceable with respect to a foot in a feed direction. A drilling machine tool is carried by the holder. An electromotor provides a feed drive for driving the holder in the feed direction. The drilling machine tool and/or the holder are displaceable relative to the feed drive in an opposite direction to the feed direction by overcoming a counterforce. A switching element monitors the relative displacement and enables a signal to be derived for stopping the feed drive if a predetermined value of counterforce is exceeded. Motor current is limited to a predetermined maximum value during operation of the device.
Claims25
A drilling device comprising
- a foot having a fixing device acting with a holding force on an object for fixing said foot on said object,
- a holder displaceable with respect to said foot in a feed direction,
- a drilling machine tool carried by said holder,
- a feed drive comprising an electromotor for driving said holder in said feed direction,
- a controlling means for controlling the feed velocity of the feed drive in response to said holding force of said fixing device.
A drilling device comprising
- a foot,
- a holder displaceable with respect to said foot in a feed direction,
- a drilling tool drive carried by said holder,
- a drilling tool driven by said drilling tool drive,
- a feed drive comprising an electromotor for driving said holder in said feed direction,
- an overload control means comprising a path sensor for detecting a counterforce acting on said drilling tool,
- and further comprising a measuring means for detecting a motor load of said drilling tool drive, said overload control means switching off said feed drive but keeping said drilling tool drive running if said counterforce exceeds a predetermined value and/or if said motor load reaches a predetermined load level.
Dependencies are inferred from the claim text.