MIL-G-80267
Style B machine controls shall have buffer
3.3.14.18 Buffer storage.
storage for transferring command data from the tape reader to internal
storage without delaying the next incoming command and without interrupting
the machine functions. The internal storage shall store multiple blocks of
data until required by the controlling devices.
3.3.14.19 Block-by-block-read. The control shall have a block-by-block
read function to provide for reading information one block at a time.
The control shall have the capability of
3.3.14.20 Automatic-cycle.
l
Once programmed, the control shall automa-
running in automatic cycle.
tically run for an infinite number of parts.
Compensation shall be
3.3.14.21 Grinding-wheel-diameter -compensation.
provided for grinding wheel diameters differing from those utilized in pro-
gramming.
The grinding wheel diameter compensation shall have a range of
not less than the following:
Inch system +0.0001" to +1.0000".
a.
Metric system +0.001mm to +25.400mm.
b.
3.3.14.22 Fixture compensation. A fixture compensation feature shall be
provided to permit compensation for fixture position errors.
Error resulting from reversing
3.3.14.23 Reversal -error-compensation.
the direction of the leadscrew shall be minimized by the use of appropriate
mechanical devices designed to eliminate as much reversal error as possi-
ble. Electronic compensation within the control unit may be used to reduce
the effects of reversal error. Means shall be provided to adjust the anti-
backlash device and to input new compensation values, if applicable, to
The backlash
correct for wear and usage during the life of the machine.
eliminator/compensation system shall provide sufficient accuracy to meet
the tolerances given in table II.
Axis -calibration.
Error compensation shall be provided as
3.3.14.24
necessary to
correct repeatable errors determined to exist due to ballscrew
A means shall be provided to input new error
and feedback
inaccuracies.
compensation
values as required.
3.3.14.25 Additional-features. Unless otherwise specified (see 6.2.1),
the following additional numerical control features shall be provided:
Incremental and continuous jog for each axis.
a.
Leading zero suppression or decimal point programming.
b.
Inches per minute (IPM)/millimeters per minute (MMPM),
c.
programming in all modes of operation.
d.
Data edit keylock.
3.3.14.26
Operator control panel.
Unless otherwise specified (see
6.2.1), the control unit shall have a control panel which provides at least
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