Co-ordinate measuring machines find
applications in automobile, machine tool, electronics, space and many other
These machines are best suited for the
test and inspection of test equipment, gauges and tools.
For aircraft and space vehicles, hundred
percent inspections is carried out by using CMM.
CMM can be used for determining
dimensional accuracy of the components.
These are ideal for determination of
shape and position, maximum metal condition, linkage of results etc. which
cannot do in conventional machines.
CMM can also be used for sorting tasks
to achieve optimum pairing of components within tolerance limits.
CMMs are also best for ensuring economic
viability of NC machines by reducing their downtime for inspection results.
They also help in reducing cost, rework cost at the appropriate time with a
The inspection rate is increased.
Accuracy is more.
Operators error can be minimized.
Skill requirements of the operator is
Reduced inspection fixturing and
Reduction in calculating and recording
Reduction in set up time.
No need of separate go / no go gauges
for each feature.
Reduction of scrap and good part
Reduction in off line analysis time.
Simplification of inspection procedures,
possibility of reduction of total inspection time through use of statistical
and data analysis techniques.
The lable and probe may not be in
The probe may have run out.
The probe moving in Z-axis may have some
Probe while moving in X and Y direction
may not be square to each other.
· There may be errors in digital system.