PYINLAB740001

Lab Cam Analysis Apparatus

A comprehensive machine that allows students to study cams and
followers.
It shows how they convert rotary to linear motion, and helps students
understand their limits of use before the onset of ‘bounce’.
It also introduces students to key topics of cam terminology such as
‘nose’, ‘flank’ and ‘dwell’.
The main part of the product has a precision-machined heavy steel base,
which holds a high-torque direct-drive variable-speed motor.
The motor shaft connects through a coupling to the main shaft, which
then passes into the cam test area.
Self-aligning heavy-duty bearings support the shaft, which has a
substantial flywheel.
The flywheel reduces speed variations as the torque demand changes
during the cam rotation cycle.
The cam under test fits to the end of the main shaft, accurately mounted
both axially and radially to ensure repeatability.
The follower fits to the bottom of a vertical shaft running in
low-friction linear bearings.
Include a tool for easy changeover of a choice of two followers.
Students may also fit one of a choice of two compression springs and
adjust their preload.
These add to the mass of the follower and vertical shaft pushing the
follower onto the cam face.
Students may also add different masses (included) to alter the mass of
the follower and thus the force applied to the cam.
The selection of springs, followers and cams allow for a wide range of
investigations.
Sensors on the main and vertical shafts measure angular position of the
cam and vertical position of the follower (displacement or ‘cam lift’).
FEATURES:
How spring rate, preload and follower mass affect cam bounce speed.
Comparing actual results with theory for profile les of follower
displacement, acceleration and velocity.
Cam bounce speeds for different cam and follower combinations, and
comparison of speeds to those predicted by simplified theory.
SPECIFICATION:
Masses and springs :
Five x 400 g masses and 2 compression springs
Cams :
2 convex (of different shape),
1 concave,
1 tangent
Followers :
1 roller, 1 flat face
Required for Operation :
230V, 50/60Hz, 1 phase, 120V, 60Hz/CSA, 1 phase