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1. (WO2009128760) PORTABLE POWER DRILL WITH DRILLING IMPLEMENT ROTATING AND FEEDING MEANS.

Pub. No.:    WO/2009/128760    International Application No.:    PCT/SE2009/000184
Publication Date: Oct 22, 2009 International Filing Date: Apr 8, 2009
IPC: B23B 45/00
B23B 47/18
Applicants: ATLAS COPCO TOOLS AB
ELSMARK, Karl, Johan, Lars
KJELLQVIST, Lars, Peter, Johan
Inventors: ELSMARK, Karl, Johan, Lars
KJELLQVIST, Lars, Peter, Johan
Title: PORTABLE POWER DRILL WITH DRILLING IMPLEMENT ROTATING AND FEEDING MEANS.
Abstract:
A portable power drill comprises a housing, a drilling implement carrying drive spindle, and a drive motor for rotating and axially feeding the drive spindle. The drive spindle is rotatively and axially displaceable relative to the housing and connected to the drive motor via angle gears, a feed mechanism and two bevel gears support ed on the drive spindle. The drive motor is drivingly connected to the drive spindle via a belt drive transmission, a feed shaft, and an angle gear including an axially locked but rotative nut piece. The feed shaft is located in parallel with and coupled to the drive motor via a transmission and drivingly connected to said nut piece. The drive motor is an electric motor controlled and monitored by a programmable control unit.