Applying a Biodynamic Tool Operator Model to Quantify Operator Response to Industrial Power Nutrunner Forces in Automobile Manufacturing
Practical in-plant methods were developed to obtain and measure tool, task and workstation parameters for applying the University of Wisconsin biodynamic tool operator model for quantifying operator response to shock and impulsive forces from industrial power nutrunners in automobile manufacturing. Tool mass moment of inertia was ascertained using a device designed and fabricated to measure the tool housing angular velocity by engaging the tool in a rotating system of known inertia. Tool center of gravity was measured using a device designed and fabricated so that a tool could be placed on a test plate and the resulting deflection is measured through an electronic displacement sensor. The human operator model requires measurements of the vertical and horizontal distances from the floor under the operators ankle to the tool spindle. Mechanical parameters for 72 unique tool models, representing 162 plant tool installations, were tested and power hand tool handle reaction force and deflection were predicted. The results showed that while target torque is an important component in determining operator hand responses, physical properties of the tool, joint, and operator posture also have a large effect. A bench-top tool test fixture for simulating the human operator response, consisting of equivalent mechanical human operator elements (i.e. mass, spring and damper) was also designed and constructed for evaluating industrial power hand tool performance and for predicting operator capacity without the need for a human operator to operate the tool,.
Robert G Radwin Frank J. Fronczak Robert Howery Yaspal Subedi Thomas Y. Yen Curt B. Irwin Amrish Chourasia Mary E. Sesto
University of Wisconsin, Madison, WI, USA
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-6
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）