Abstract
One of the types of grasp occuring with high frequency on the small parts assembly work is a pinch grasp.In this paper it is assumed that some of the factors influencing the pinch grasp time are a diameter of object and a way of feeding object. An experiment was conducted using four levels of the diameter of cylindrical object (2,4,6,and 8 mm) and two levels of the feeding way (vertically and horizontally). The high velocity period of the moving hand preceding and following the pinch grasp was distinguished from the low velocity period to make the pinch grasp and then pinch grasp time was measured. As the result, on the both efeeding ways the pinch grasp time are shown as a log-linear experinental equations. Therefore teh pinch grasp time is possible to be estimated using the diameter of object as a variable.
