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12 Functional Descriptions 06.93
12.1.2 Functional description
Feed motor
Measuring equipment with
resolver gearbox
Spindle meterLeadscrew
Ideal leadscrew pitch
Spindle position
Slide position
Position measured (from
measuring equipment)
Actual leadscrew pitch
Measuring error due to leadscrew error
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MD 6000
(4 comp. points per MD (8 bits)
MD 6249
1000500
1
Compensation point
Measuring leadscrew error compensation
The reference point is first approached to synchronize the measuring system. This is then
followed by travel to the negative range limit of the axis, commencing from this point to plot an
error curve in the positive direction using an accurate instrument; the reference point must be
identified.
Reference point
Traverse
path
Pos.
error
Neg.
error
Spacing
Neg. traversing limit Pos. traversing limit
12–2 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)
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