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JRM Vol.5 No.1 pp. 46-52
doi: 10.20965/jrm.1993.p0046
(1993)

Paper:

Development of Six-Axis Force Sensor Using Plate Spring

Yoichi Muranaka, Raifu Murai,* Masakazu Takahashi,** and Genichiro Kinoshita

Faculty of Science and Engineering, Chuo University
1-13-27, Kasuga, Bunkyo-ku, Tokyo 112, Japan

*Olympus Optical Co., Ltd.
1-22-1, Nisfii~Shinjuku, Shinjuku-ku, Tokyo 160, Japan

**Fuji Xerox Co., Ltd.
3-3-5, Akasaka, Minato-ku, Tokyo 107, Japan

Received:
November 16, 1992
Accepted:
December 4, 1992
Published:
February 20, 1993
Keywords:
Force sensor, Robot sensor, Cross-shaped plate, Force calibration, Cross-talk
Abstract

This paper describes a six-axis force sensor for robot manipulators which consists of a cross-shaped plate spring formed from a 160mmx160mm, lmm thick beryllium- copper plate. The plate spring is twisted through a 90° angle at the mid-point of each branch of the crossshaped spring so that it consists of eight flat springs aligned on two orthogonal axes. Six components of the force/.torque vector acting on the end-effector are measured using strain gauges cemented at sixteen locations of the plate spring. Optimal locations of strain gauges are determined through the calculation of strain distri~ ution caused by each component of the force/torque vector. A simple setup for calibration of the sensor, which consists of a pair of commercial linear guides, a pair of force indicating meters, and a pair of micrometer heads, is presented. The performance characteristics of the sensor are examined in detail.

Cite this article as:
Y. Muranaka, R. Murai, M. Takahashi, and G. Kinoshita, “Development of Six-Axis Force Sensor Using Plate Spring,” J. Robot. Mechatron., Vol.5, No.1, pp. 46-52, 1993.
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Last updated on Jul. 19, 2019