ESDU 95001:2011

ESDU 95001 and the associated computer program presents methods
for the calculation of the pressure angle, the radius of curvature
of the cam profile, the radius of curvature of the pitch curve and
the coordinates of the cam profile, throughout one complete cycle
of the cam at user-specified intervals of cam rotation. The
calculated quantities are provided for a specified follower motion
and with any one of the commonly-used follower types, i.e.
translating or swinging, flat-faced, domed or roller followers. The
methods are equally applicable to cam systems with spring force
closure or body force closure, for example, cognate cams or grooved
cams. The methods and program checks that interference
(undercutting) between the cam and the follower or between the cam
and the cutter is avoided. In addition, when the profile has been
finalised and the cam is to be manufactured, a series of cutter
coordinates for direct transfer to a computer-controlled machine is
provided.

The follower motion is specified in terms of a cam law which
provides a relationship between the motion of the cam and the
motion of the follower. Six commonly-used cam laws covering both
trignometrical and polynomial types are included in the computer
program. The motion of the follower, in the form of values of
displacement, velocity, acceleration and jerk can also be directly
input to the program at run time via a motion data file.

Six examples illustrating the operation and use of the program
are included.

This document does not provide a preview.