Download C - Mechanical Engineering Lab

Glossary
LLF
The learned list file or the part program.
Lobing
A systematic error in the measuring accuracy of probing
systems such that a measured value depends on the
displacement direction of the probe tip.
Login
The procedure performed to boot a computer. It usually
involves typing a password.
Machine Axes
The X, Y, and Z axes built into the CMM. Each type of
machine (vertical, horizontal. etc.) has different axes
arrangements.
Machine
Coordinates
X, Y, and Z values that have not been altered by part
alignment compensation.
Machine Hysteresis
The hysteresis of the machine system when subjected to
loads.
Machine Named
Axes
The two axes of the machine's working plane. In the XY
working plane, X is the first-named axis and Y is the
second-named axis. The Unnamed Axis is the axis not
named in the working plane, in this case Z.
Machine Setup
The routine operations performed on a CMM, such as
calibrating probes and selecting measurement units.
Major Radius
The greatest possible distance between the outennost
edge of an ellipse and its center.
ManualCMM
A Coordinate machine without motor drives on the axes.
Manual Control
The user controls the movements of the X, Y, and Z axes
as well as the setup parameters.
Master Sphere
Same as Calibration Sphere. An accessory used in
qualifying the probe.
Maximum Traverse
Speed
The maximum speed along any given machine axis.
Mean Ambient
Temperature
The mean temperature of the ambient environment
surrounding a machine. It should be computed from at
least two readings taken at the center of the machine's
work zone during the interval of the test.
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