
Chapter 22 Appendices
22-9
(1) LEFTY/RIGHTY (Shoulder figure)
The rotary axis of the 1st axis is defined as the boundary between LEFTY and
RIGHTY.
When viewed from the normal line on the side of the arm link, if point Pw exists in the
left-hand side of the rotary axis of the 1st axis, the figure is LEFTY; if point Pw exists
in the right-hand side, it is RIGHTY. In Figure 8, the boundary is drawn with alternate
long and short dash lines.
NOTE: If point Pw exists on the rotary axis of the 1st axis, that is, on the boundary
between LEFTY and RIGHTY, then it is called a singular point.
Figure 8. Boundary between LEFTY and RIGHTY
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