Control method for a hand-held power tool
AssigneeHilti Aktiengesellschaft
InventorsRainer Ontl, Damir Cehajic, Christoph Dieing
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AssigneeHilti Aktiengesellschaft
InventorsRainer Ontl, Damir Cehajic, Christoph Dieing
Estimating the term…
The hand-held power tool has a tool holder (2) for holding a tool (4) along a working axis (12). A hammer mechanism (6) has a striker (15) that is moved periodically along the working axis at an impact rate. A drive control (18) of the hammer mechanism (6) sets the impact rate to a set point value. A vibration absorber (19) has an oscillator (21) that moves along the working axis (12) about a resting position and one or multiple springs (20) that drive the oscillator (21) back into the resting position. A calibration phase comprises the following steps: detection of an acceleration using the acceleration sensor (24); determination of a minimum of the acceleration by varying the impact rate in a range of between 90% and 110% of the set point value; and adjusting the set point to the impact rate associated with the ascertained minimum.
A control method for a hand-held power tool including a machine housing, a handle fastened to the machine housing for guiding the hand-held power tool during operation, a tool holder for holding a tool on a working axis, a hammer mechanism including a striker moving periodically at an impact rate on the working axis, a drive control of the hammer mechanism setting the impact rate to a setpoint value, a vibration absorber including an oscillator moving with respect to the working axis back and forth from a resting position and at least one spring driving the oscillator back into the resting position, an acceleration sensor attached to a machine housing for detecting accelerations along the working axis, the control method comprising a calibration phase having the following steps:
Dependencies are inferred from the claim text.