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Inspection equipment design requirements |
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|  MIL-L-60244A(MU)
4.5.2.2 contractor design. - The contractor shall design and supply
inspection equipment compatible with the "Test methods and procedures"
specified in 4.6 of this specification and with the component inspection
procedures specified in "'Examination" and "Test facilities" requirements
of MIL-F-13926. Since tolerance of test equipment is normally considered
to be within 10% of the product tolerance for which it is intended, this
inherent error in the test equipment design must be considered as part of
the prescribed product tolerance limit. Thus, concept, construction,
materials, dimensions and tolerances used in the design of test equipment
shall be so selected and controlled as to insure that the test equipment
will reliably indicate acceptability of a product which does not exceed
90% of the prescribed tolerance limit, and permit positive rejection when
nonconforming. Construction shall be such as to facilitate routine cali-
bration of test equipment.
4.5.2.3 Inspection equipment design requirements.
4.5.2.3.1 Orientation and backlash.- The special testing equipment
utilized to mount and orient the linkage assembly for the backlash test
shall conform to the following requirements.
(a) The testing equipment shall be capable of mounting
and orienting the linkage assembly as specified in 3.7.
(b) A mounting block shall be incorporated on the test
equipment that shall permit mounting and securing the 2-1/4 inch x 2.499
inch mounting surfaces of support 10542037 in a horizontal plane within
thirty minutes of arc.
(c) An adjustable and moveable holding device shall be
a part of the test equipment that shall permit the mounting, securing,
fine adjustment and movement of Connector 8635540. subsequent to the
mounting and securing of Connector 8635540, the holding device shall be
capable of adjustment so that the axis through Tube 8635542 can be
positioned at 10 degrees 30 minutes 3.0 degrees with respect to the
2-1/4 inch x 2.499 inch mounting surfaces (8549'35" with respect to
the angular position of Arm 10542031).
(d) A viewing collimator, capable of measuring any line
of sight deviations in elevation or depression, in seconds of arc, shall
be a part of the test equipment. The viewing collimator shall be located
and mounted in such a manner so that the viewing collimator may be elevated
and `depressed in direct relation with and on the same axis as Coupling
8620152.
(e) A front surface reflecting mirror shall also be pro-
vided on the test equipment. The mirror shall be located and mounted
directly in front of the objective end of the viewing collimator, in
alinement with the line of sight emitting from the viewing collimator.
The mirror shall be capable of being adjusted in all planes.
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