US 9,811,067 B2
Coil spring modeling apparatus and method of the same
Takahiro Nakamura, Yokohama (JP); Kazuo Furukawa, Machida (JP); Senri Moriyama, Yokohama (JP); Ryuichi Sato, Yokohama (JP); and Shinichi Nishizawa, Walled Lake, MI (US)
Assigned to NHK SPRING CO., LTD., Kanagawa (JP); and NHK INTERNATIONAL CORPORATION, Wixom, MI (US)
Filed by NHK SPRING CO., LTD., Yokohama-shi, Kanagawa (JP); and NHK INTERNATIONAL CORPORATION, Wixom, MI (US)
Filed on Feb. 12, 2015, as Appl. No. 14/620,855.
Prior Publication US 2016/0239004 A1, Aug. 18, 2016
Int. Cl. G05B 15/00 (2006.01); G06F 7/48 (2006.01); G01M 17/00 (2006.01); G05B 17/02 (2006.01); F16F 1/04 (2006.01)
CPC G05B 17/02 (2013.01) [F16F 1/04 (2013.01); F16F 2230/0017 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A coil spring modeling apparatus provided on a strut comprising a lower spring seat and an upper spring seat, the coil spring modeling apparatus comprising:
a first attachment member disposed on the lower spring seat;
a second attachment member disposed on the upper spring seat;
an actuator unit which comprises a plurality of hydraulic cylinders arranged with their inclinations changed alternately between the first attachment member and the second attachment member, and which extends and retracts;
a spring height detection mechanism configured to detect an amount of displacement with respect to a distance between the first attachment member and the second attachment member, the spring height detection mechanism comprising displacement gauges each of which is provided on a respective one of the hydraulic cylinders and each of which detects an amount of displacement relative to a reference length of its respective one of the hydraulic cylinders; and
a controller configured to control each of the hydraulic cylinders of the actuator unit according to the amount of displacement detected by each of the displacement gauges of the spring height detection mechanism.