Title:
BOLT AND NUT FASTENING MACHINE
Document Type and Number:
Japanese Patent JP2723493
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To perform a series of sticking in, preliminary fastening and actual fastening by providing, in a planetary gear reducing mechanism, a soft locking means for integrally rotating both members by friction between these associatively rotated members of a planetary gear reducing mechanism.
SOLUTION: When the shaft part of a one-side bolt is engaged with the screw hole of a pillar and the fastening torque of the one-side bolt is larger than the friction force of the soft locking means 9 of a planetary gear reducing mechanism 2, a sun gear 21a locked by the soft locking means 9 and an inner gear 21c are rotated relative to each other, that is, the planetary gear speed reducing mechanism 2 normally performs its speed reducing function and rotating forces reverse to each other speed reduced to outer and inner sockets 3 and 4 are applied. In this case, since the one-side bolt is already firmly fastened to the screw hole, only a nut is fastened.
Inventors:
KANAYAMA TAISO
MATSUMURA SHOZO
SATO NORIFUMI
MATSUMURA SHOZO
SATO NORIFUMI
Application Number:
JP13248196A
Publication Date:
March 09, 1998
Filing Date:
May 28, 1996
Export Citation:
Assignee:
MAEDA KINZOKU KOGYO KK
International Classes:
B25B21/00; B25B23/14; B25B23/153; (IPC1-7): B25B23/153; B25B21/00; B25B23/14
Domestic Patent References:
| JP731277U | ||||
| JP6295879U |
Attorney, Agent or Firm:
Toshiyuki Maruyama (2 outside)
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