Page 559 - Cam Design Handbook

THBAP 9/19/03 7:29 PM Page 547

BASIC CONTOURS 547

a) With F 1 and F 2 as centers, draw arcs, such as F 1P.
b) With the same centers and radius F 1P minus distance 2a, strike arcs intersecting the
other arcs giving points on the curve.
c) Repeat using new radius F 1P.

d P
e
b F 1
b F 2
aa

FIGURE A.4. Hyperbola.
Y

4
P
A
3
2
1

O B X

FIGURE A.5. Rectangular hyperbola.

2. Rectanglar

One of the most frequently employed curves in engineering is the rectangular or equilat-
eral hyperbola (Fig. A.5).