1、 MIL-M- 1 O 3 2 3A (m ) NIL-N-10323A 12 7797706 04611406 7 W 16 October 1967 SUPERSEDING MIL-M-10323 (Ord) 25 May 1950 I I MILITARY SPECIFICATION MOUNT, TEUSCOPE: M48 1. SCOPE 1.1 This specification covers one type of telescope mount known as Mount, Telescope: M48. 2. APPLICABLE DOCUMENTS 2.1 The fo
2、llowing documents, of the issue in effect on date of invi- tation for bids or request for proposals, fom a part of this specifica- tion to the extent specified herein. SPECIFICATIONS Mi li tary MIL-F-13926 Fire Control Materiel: General Speci- fication Governing the Manufacture and Inspection of MIL
3、-P-1423? Parts, Equipment and Tools for Ordnance Materiel, Packaging of MIL-1-45607 Inspection Equipment, Supply and Maintenance of STANDARDS Military MIL- STD- 105 Sampling Procedures and Tables for Inspection by Attributes MIL-STD-109 DRAWINGS Quality Assurance Terms and Definitions U. S. Army, Fr
4、ankford Arsenal D6510712 D6523553 F6583165 Adapter Fixture Gage Assembly Azimuth Test Fixture Mount, Telescope, M48 PACKAGING DATA SHEET MIL-P-l4232/P6583165 Packaging of Mount, Telescope: M48 FSC 1240 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
5、I_ MIL-M-L323A 12 W 99999b qbY407 9 W MIL-M-10323A (MU) (Copies of specifications, standards, drawings and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the con- tracting officer.) 3, REQ
6、UIREMENTS 3.1 Fabrication,- The mount shall be manufactured in accordance with Drawing F6583165. 3.2 General specification.- The contractor shall be responsible for compliance with the following requirements of MLL-F-13926: a. Order of precedence. b. Dimensions and tolerances. c. Inorganic protectiv
7、e surface finishes. d. Part identification and marking, 3.3 Temperature conditions.- The requirements of this specification shall be met with the mount thermally stabilized at an ambient temperature of between 4-60 and 4-90 Fahrenheit (F) unless otherwise specified. I“ 3.3.1 Extreme operating temper
8、atures.- The mount shall meet the requirements of 3.7.3 while thermally stabilized at ambient temperatures of -40 and +150F. 3.4 Vibration.- o 30 cycles per second with a displacement of 1/8 inch for a period of 5 minutes plus or minus 15 seconds at room temperature plus 60 to 90 (F) subsequent to v
9、ibration all requirements of the specification shall be met. The mount shall be vibrated at a constant frequency 3.5 Orientation.- The mount shall be set up as shown on the assembled viewing Drawing F6583165. and the level centered within the etched circle on the cover glass. The axis of the mountin
10、g spindle shall be vertical 3.6 Accuracy. 3.6.1 Azimuth reading,- Error of any azimuth reading shall not exceed 2.0 mils including backlash. 3.6.2 Backlash,- Backlash in the azimuth and orienting worm mechanism shall not exceed 1.0 mil in each mechanism. 3.6.3 Vertical displacement.- The axis of the
11、 mounting spindle shall not deviate from its vertical position by more than 1.5 mils when the mount is rotated to any position of azimuth rotation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.6.4 Scale coincidence.- The zero graduation of the a
12、zimuth micro- meter shall coincide with 2ts index when any azimuth scale marking is in coincidence with the azimuth scale index. 3.7 Operability. 3.7.1 Azimuth knob.- The torque required to rotate the azimuth knob shall be within a minimum of 24 to a maximum of 36 inch-ounces. The maxi- mum variatio
13、n of the operational torque value shall not exceed plus or minus 4 inch-ounces over 64OOrmils of mount travel. 3.7.2 Orienting knob.- The torque required to rotate the orienting knob shall be within a minimum of 32 to a maximum of 42 inch-ounces over 6400 mils of mount travel. valve shall not exceed
14、 plus or minus 6 inch-ounces over 6400 mils of mount travel. The maximum variation of the operational torque 3.7.3 High and low temperature operability.- With the mount subjected to the requirements of 3.3.1. knobs shall not exceed 8 inch pounds at -40F, at +150F the maximum allow- able torques as i
15、ndicated in 3.7.1 and 3.7.2 shall not be exceeded. The torque on the azimuth and orienting 4. QUALTY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the per- formance of all inspection requirements
16、 as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. “he Government re- serves the right to perform any of the inspections set forth in the speci- fication where such inspections are deemed necessa
17、ry to assure supplies and services conform to prescribed requirements. 4.1.1 General provisions.- The component and subassembly inspection requirements of MIL-F-13926 form a part of the quality assurance provisions of this specification. in MIL- STD-109. Definitions of inspection terms shall be as l
18、isted 4.2 First article submission.- When a first article sample is re- quired by the contract it shall be submitted to the Government for test and evaluation in accordance with the contract schedule. The sample shall consist of three (3) mounts. The sample shall be manufactured in the same manner,
19、using the same materials, equipment, processes and procedures as used in regular production. All parts and materials, equipment, processes and including packaging and packing shall be the same as used for regular production and shall be obtained from the same source of supply. provisfonal acceptance
20、 at source, the initial production samples will be inspected and tested by the Government for all requirements and tests of the drawings and specifications. Government inspection and testing may be conducted at the contract facility or as otherwise specified by the contract. duction samples until su
21、ch time as an acceptable sample is submitted. After The Government reserves the right to require new initial pro- -3- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-LO323A 12 W 7799906 0464407 2 W MIL-M-l0323A(MIJ) v 4.3 Inspec tion provisions
22、. 4.3.1 Submission of product.- Unless otherwise specified by the con- tracting officer, inspection lot size, lot formation and presentation of lots shall be in accordance with “Submission of Product“ provisions of MIL-STD-105 . 4.3.2 Examination and tests. 4.3.2.1 Components and subassemblies.- All
23、 components and subassemb- lies shall be inspected in accordance with the inspection provisions con- tained in Supplementary Quality Assurance Provisions (SQAP) listed in the technical data package (TDP). In the absence of SQAPs, the applicable Quality Assurance Provisions of MIL-F-13926 shall apply
24、. tests related to Section 3 herein shall be performed on a single defect (individual characteristic) basis in accordance with MIL-STD-105 and the sampling plans specified in Tables I, II, and III herein. Examination and tests for packaging, packing, and marking shall be in accordance with MIL- ?-14
25、232 and Section 5 herein. The tabirlated classification of defects in Tables I, II, and III shall constitute the minimum inspection to be per- formed by the supplier after first article approval and prior to Government acceptance or rejection by item or lot. Examination, and TABLE: I - CLASSIFICATIO
26、N OF DEFECTS /- CLASS CRITICAL: NONE - MAJOR: AQL 0.65% Defective - 101 . 102. 103. 104. 105 . 106. 107 . 108 . Vibration Azimuth reading Backlash, azimuth worm mechanism Backlash; orienting worm mechanism Vertical displacement Scale coincidence Aximuth knob, operability Orienting knob, operability
27、REQUIREMENT TEST PROCEDURE 3 e4 4.6.2;4,6.2.1 3.6.1 4.6.4.1 3.6.2 4.6.4.2 3.6.2 4.6.4.3 3.6.3 4.6.4.4 3.6.4 4.6.4.5 3.7.1 4.6.4.6 3.7.2 4.6.4.7 - MINOR: NONE NOTE: The tests in Table I shall be conducted at a temperature be- tween +60 and +90F. 4.3.3 Acceptance and rejection.- Rejected lots shall be
28、 screened for all defective characteristics. Removal or correction of defective units and resubmittance of rejected lots shall be in accordance with “Acceptance and Rejection“ as specified in MIL-STD-105 . 4.4 Special Sampling. 4.4.1 General.- One mount shall be selected at random as a special sampl
29、e from each 100 produced. and tests in Table II. The sample shall meet the requirements -4- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-10323A 12 m 774970b 04b44LO 7 m MIL-M-l0323A(MU) TABLE II CHARACTERISTIC REQUIREMENT TEST PROCEDURE 301.
30、 Fabrication 302. General specification 3.1 Applicable draw- ing - visual 3.2 MIL-F-13926 - visual NOTE: The tests in Table II shall be conducted at a temperature be- tween +60 and +90F. 4.4.2 Environmental.- Three mounts shall be selected at random as a sample from each 50 produced, or from each mo
31、nths production, whichever occurs first. and shall then meet the requirements and tests in Table I. The sample shall meet the requirements and tests in Table III TABLE III CHARACTERISTIC REQU3XEMENT TEST PROCEDURE 303. Operating temperatures 3.3.1 4.6.1 304. Torque, azimuth knob 3.7.3 4.6.4.8 305. T
32、orque, orienting knob 3 07.3 4.6.4.8 (-40 and + 150OF) 4.4.3 Failure of sample.- Should any one item of a special sampling fail to meet the specified test requirements, acceptance of the product shall be suspended by the Government until necessary corrections have been made by the contractor and res
33、ubmitted samples have been approved (see 4.3.3). 4.5 Inspection equipment.- Except as otherwise provided for by the contract, the contractor shall supply and maintain inspection equipment in accordance with the applicable requirements of MIL-1-45607 . 4.5.1 Government furnished inspection equipment.
34、 - Where the contract provides for Government furnished test equipment, supply and maintenance of test equipment shall be in accordance with the applicable requirements speci- fied in MIL-1-45607. 4.5.2 Contractor furnished inspection equipment. 4.5.2.1 Government design. - Unless otherwise specifie
35、d in the contract, all inspection equipment specified by drawing number in specifications or SQAP forming a part of the contract shall be supplied by the contractor in accordance with technical data listed in the technical data package (TDP). 4.5.2.2 Contractor design.- The contractor shall design a
36、nd supply 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. -5- Provided by IHSNot for ResaleNo reproduction or networking permit
37、ted without license from IHS-,-,-Since tolerance of test equipment is normally considered to be within 10% of the product tolerance for which it is intended, this inherent scribed product tolerance limit. dimensions and tolerances used in the design of test equipment shall be so selected and control
38、led as to insure that the test equipment will reliably indicate acceptability of a product which does not exceed 9o“k of the pre- scribed tolerance limit, and permit positive rejection when non-conforming. Construction shall be such as to facilitate routine calibration of test equipment. c error in
39、the test equipment design must be considered as part of the pre- Thus, concept, construction, materials, 4.5.2.3 Inspection equipment to test performance.- The special test- ing equipment (STE) shall consist of an azimutb. fixture, adapter fixture, perpendicularity check gage, viewing telescope and
40、a test target. (a) An azimuth testing fixture conforming to requirements of Drawing D6523553 employed to perform the azimuth tests, may be utilized, (b) An adapter fixture, confodng to requirements of Drawing D6510712, employed for the purpose of mounting and holding the mount on the azimuth tksting
41、 fixture, may be utilized. (c) A perpendicularity check gage, conforming to requirements of Drawing D6510712, is used with a commercial bench level having a sensitivity tests. fits to provide an optical line of sight which is an aid to perform the aximuth accuracy and vertical displacement tests of
42、5 seconds, in setting the axis of the mounting spindle vertically for r The gage shall have a tlVtl groove into which an auxiliary telescope (d) A test target consisting of a horizontal and vertical center- line with mil blocks extending in both directions in elevation and azimuth. The size of one m
43、il, in inches, is determined by the distance at which the target is placed, from the objective of the viewing telescope, and is equal to the distance divided by a thousand. measure backlash, azimuth error and vertical displacement. The mil blocks are utilized to (e) A viewing telescope of a,t least
44、3 power with a suitable cross line reticle will be used. the outside diameter within 10 seconds. mit plumbing the reticle within 10 seconds, and for maintaining this accur- acy with respect to the perpendicularity gage and with the target. The reticle shall be centered with respect to Provisions-sha
45、ll be made to per- 4.6 Test methods and procedures. 4.6.1 Extreme operating temperatures.- The testing equipment utilized in this tesi shall be in accordance with the “Test Facilitiest1 requirements of MIL-F-13926, and the conditions of 3.3.1. each temperature extreme for a minim of 5 hours. The tem
46、peratures shall be changed gradually to avoid thermal shock. period, and while still at the temperature extreme, the mount shall be visually examined for damage and then tested as specified in 4.6.4.8. The mount shall be exposed to At the end of each 5 hour -6- Provided by IHSNot for ResaleNo reprod
47、uction or networking permitted without license from IHS-,-,-4.6.2 Vibration.- The mount shall be subjected to the vibration The accuracy of the applicable test equipment test utilizing a standard type of vibration machine capable of meeting the conditions of 3.4. and test equipment measurements shal
48、l be in conformance with the “Test Facilities“ requirements of MIL-F-13926. the vibrating table simulating its intended use by means of an adapter or holding media. the motion and frequency applied for the time indicated in 3.4. conclusion of this vibration, the mount shall be subjected to the exami
49、na- tion in 4.6.2.1. cedures outlined herein to determine compliance with the requirements of 3.4. The mount shall be secured to The mount shall be vibrated in a vertical plane with At the The mount shall then be subjected to the tests and pro- 4.6.2.1 Examination, post vibration.- The mount shall be examined for physical defects resulting from poor workmanship and material. A visual examination shall be made for missing and damaged parts. A
