A New Numerical Method of Calculating Reachable Workspace of Varied-axis NC Machine Tool;

Application of the GIS-based two-step floating catchment area method in measurement of spatial accessibility to hospitals in Beijing;

Considering the uneven spatial distribution of medical facilities in rural China,this paper aims to assess the equality of rural medical services by introducing geographic information systems(GIS) and spatial accessibility indexes.

Obviously,we can see the great change of the spatial accessibility of Yangzhong,and get 4 time-distance circles.

The conclusion of gesture distribution of the reachable workspace is drawn on the basis of analyzing this reachable workspace,and such a distribution can be substituted by the gesture distribution of that while Zc value is in the middle of the workspace.

Taking HT120 spotwelding robot made in China as an example, the effect of parallel four-bar mechanism on the reachable workspace of spotwelding robot and dynamic model of robot based the parallel four-bar mechanism were deeply analyzed.

Based on the geometric parameter design spaces and constraint conditions,the relationship between geometric design parameters and the reachable workspace was studied in detail by using geometric methodology.

The total orientation workspace is a set of location of the center of moving platform that can be reached with all orientation within a set of defined ranges on the orientation parameters.