To provide a power tool having a tool body in which it is determined whether a tightening as specified is performed by detecting a tightening torque, and in which the data on the determination is stored.
This power tool has: a motor 3 of brushless DC system; rotation control circuits 7a, 7b for controlling the rotation of the motor 3; an impact unit driven by the motor 3; and an output shaft which is connected to the shaft of the impact unit and to which an end tool is attached. The power tool further has a torque sensor 12 for detecting the occurrence of impact torque and a microcomputer 60 for controlling the tightening of the end tool using the output of the torque detection means 12. The microcomputer 60 stores the tightening data in a portable memory card 81 for each tightening.
IIMURA YOSHIO
IWATA KAZUTAKA
NISHIKAWA TOMOMASA
YOSHIMIZU TOMOMI
JP2006289535A | 2006-10-26 | |||
JP2005238418A | 2005-09-08 | |||
JP2006224208A | 2006-08-31 | |||
JP2004015986A | 2004-01-15 | |||
JP2005238418A | 2005-09-08 | |||
JP2006224208A | 2006-08-31 | |||
JP2001121442A | 2001-05-08 | |||
JPH09285973A | 1997-11-04 | |||
JPH1015844A | 1998-01-20 | |||
JP2005351683A | 2005-12-22 | |||
JP2006289535A | 2006-10-26 |
WO2006089925A1 | 2006-08-31 |
Mikio Nakabayashi