Dynamic Synchronous Accuracy of Translational Axes and Rotational Axes in 5-axis Machining Center

Rotational axes in human incisor teeth.

Distal femoral rotational axes in Indian knees.

PURPOSE To measure the angular relationships of distal femoral rotational axes in 100 normal Indian knees. METHODS 42 men and 8 women aged 26 to 40 (mean, 31) years, with 100 normal non-arthritic knees were recruited. Anatomic landmarks were measured using computed tomography. They included the posterior condylar axis, the transepicondylar axis, the anteroposterior axis (Whiteside's line), th...

Tool Path Modification Approaches to Enhance Machining Geometric Accuracy in 3-Axis and 5-Axis Machining

Extension of Usable Workspace of Rotational Axes in Robot Planning

Singularity of a robot manipulator is one of the obstacles that influences its capabilities. This paper discusses constrained and allowable rotational motion resulting from lost translational freedom when the robot is singular. A convenient method and simple and clear expression to determine the allowable rotational axes and the subspace that they form, under Jacobian singularity, is analyzed a...

Alignment of rotational axes in asynchronous late type binaries

41 RS CVn and BY Dra type binaries with reliable orbital and physical parameters have been found to rotate asynchronously with the orbital revolution. For this sample inclinations of the rotational axes, ir, of the primaries and the orbital inclinations, io, are independently determined to test the alignment between the equatorial and the orbital planes. The observed difference ∆i = |io − ir| m...