Table 1 Intersection points verification.

From: An explicit and rapid intersection algorithm of plane and NURBS surface in CNC surface machining

No.

Intersection points

Error (*10− 4)

1

30.000000 151.641674 20.000000

0.880000

2

97.602938 155.997906 72.950913

− 0.116200

3

141.938504 157.488822 91.285298

− 0.489600

4

194.400707 158.088789 99.009415

0.600700

5

242.284335 157.403372 91.263243

0.643500

6

300.780479 155.831411 72.984723

0.137900

7

400.000000 151.333340 20.000000

0.800000