US 12,447,593 B2
Nut runner control system has a tightener that is provided with marker and camera remotely images the marker to detect position of the tightener
Hisashi Ryota, Aichi (JP); and Shigenori Onishi, Aichi (JP)
Assigned to SANYO MACHINE WORKS, LTD., Aichi (JP)
Appl. No. 18/020,759
Filed by SANYO MACHINE WORKS, LTD., Aichi (JP)
PCT Filed Oct. 13, 2020, PCT No. PCT/JP2020/038665
§ 371(c)(1), (2) Date Feb. 10, 2023,
PCT Pub. No. WO2022/079810, PCT Pub. Date Apr. 21, 2022.
Prior Publication US 2023/0302613 A1, Sep. 28, 2023
Int. Cl. B25B 23/147 (2006.01); G06T 7/73 (2017.01); F16D 3/38 (2006.01)
CPC B25B 23/147 (2013.01) [G06T 7/74 (2017.01); F16D 3/38 (2013.01); G06T 2207/30204 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A control system for a tightener, the control system configured to control driving of the tightener when a tightened member is rotated and tightened by the tightener held by an operator, the control system comprising:
a marker provided on the tightener;
a camera that remotely images the marker and detects a position of the tightener; and
a controller that stores a target tightening torque values of a plurality of tightened members together with position information of the tightened members, stores an order of tightening the plurality of tightened members to be tightened by the tightener together with the position information of the tightened members, sets a tightening torque value of the tightener for each of the tightened members to be tightened by the tightener based on the position of the tightener detected by the camera, and enables the driving of the tightener only when the tightener is moved to one of the tightened members in accordance with the order of tightening with the tightener.