MIL-B-80272
All castings and forgings shall be free
Castings and forgings.
3.3.1
No processing
such as welding, peening, plug-
and mismatching.
of scale
filling with solder or paste shall be used for reclaiming any
ging, or
part.
defective
Welding, brazing or soldering.
Welding, brazing, or soldering
3.3.2
shall be employed only where specified in the original design.
None of
these processes shall be employed as a repair measure for any defective
part.
All threaded fasteners shall comply with
Fastening devices.
3.3.3
All screws, pins, bolts, and other fasteners shall be
FED-STD-H28.
installed in a manner to prevent change of tightness. Fastening devices
subject to removal or adjustment shall not be swaged, peened, staked, or
otherwise permanently installed.
3.3.4 Surfaces.
All surfaces shall be clean and free of sand, dirt,
fins, sprues, flash, scale, flux, and other harmful or extraneous materials.
All edges shall be either rounded or beveled unless sharpness is required to
perform a necessary function.
Except as otherwise specified herein, the
condition and finish of all surfaces shall be in accordance with the manu-
facturer's commercial practice.
Unless otherwise specified (see 6.2.1), the jig boring
3.3.5 Painting.
machine shall be painted in accordance with the manufacturer's commercial
practice.
3.3.6 Threads. All threaded parts used on the jig boring machine and its
related attachments and accessories shall conform to FED-STD-H28 and the
applicable "Detailed Standard" section referenced therein.
3.3.7
Dials.
All dials that indicate stock removal or tool movement
Dial dia-
shall be graduated in increments not larger than 0.0001 inch.
meters shall be such that graduations may be read from the normal operating
Dials and dial diameters shall be permanently and legibly
position.
engraved or etched on a nonglare background with graduations that can be
read from the operator's normal position.
3.3.8 Gears. All gears and pinions of spindle and axis drive train shall
be designed and manufactured of a suitable ferrous material to meet or
exceed the requirements of AGMA 360.02 and 390.03 for the English (US)
system or ISO 54 for the metric (SI) system. The gears shall be of proper
width and size to transmit full rated torque and horsepower throughout the
speed ranges without failure for the expected service life of the machine.
3.3.9 Electromagnetic interference control.
When specified (see 6.2.1),
equipment furnished under this specification shall comply with MIL-STD-461.
The equipment and subsystem class and the emissions susceptibility require-
ments shall be as specified.
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