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1. (WO2018100801) IMPACT ROTARY TOOL AND METHOD FOR SETTING SHUTOFF IMPACT COUNT

Pub. No.:    WO/2018/100801    International Application No.:    PCT/JP2017/028047
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Aug 03 01:59:59 CEST 2017
IPC: B25B 23/14
B25B 21/02
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: HONDA Akiko
本田 亜紀子
MURAKAMI Hiroaki
村上 弘明
MIZUNO Mitsumasa
水野 光政
Title: IMPACT ROTARY TOOL AND METHOD FOR SETTING SHUTOFF IMPACT COUNT
Abstract:
A setting unit 15 sets a shutoff impact count of an impact mechanism 9. An impact detection unit 12 detects impact applied to an output shaft 8 by the impact mechanism 9. A control unit 10 counts the number of impacts detected by the impact detection unit 12, and when the counted number of impacts reaches the shutoff impact count, rotation of a motor 2 is stopped. On the basis of a relationship between a target fastening torque value for when motor rotation is stopped at the shutoff impact count, and the actual fastening torque value actually measured when motor rotation is stopped at the shutoff impact count, the setting unit 15 corrects the shutoff impact count such that the fastening torque value when motor rotation is stopped becomes the target fastening torque value.