DLA A-A-59351-1999 GRINDING MACHINE DRILL [Superseded DLA MIL-G-45072 G CANC NOTICE 1 DLA MIL-G-45072 G DLA MIL-G-45072 F (1) DLA MIL-G-45072 F DLA MIL-G-45072 E DLA MIL-G-45072 D .pdf
《DLA A-A-59351-1999 GRINDING MACHINE DRILL [Superseded DLA MIL-G-45072 G CANC NOTICE 1 DLA MIL-G-45072 G DLA MIL-G-45072 F (1) DLA MIL-G-45072 F DLA MIL-G-45072 E DLA MIL-G-45072 D .pdf》由会员分享,可在线阅读,更多相关《DLA A-A-59351-1999 GRINDING MACHINE DRILL [Superseded DLA MIL-G-45072 G CANC NOTICE 1 DLA MIL-G-45072 G DLA MIL-G-45072 F (1) DLA MIL-G-45072 F DLA MIL-G-45072 E DLA MIL-G-45072 D .pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、“3018054 0002835 T29 Twe I (Floor mounted) INCH-POUND A-A-5935 1 28 September 1999 SUPERSEDING 1 O November 1988 MIL-G-45072G Size Horsepower 1 1 /3 .- 2 112 COMMERCIAL ITEM DESCRIPTION GRINDING MACHINE, DRILL II The General Services Administration has authorized the use of this commercial item desc
2、ription as a replacement for MIL-G-45072G for all federal agencies. 3 1 /2 4 1 1 1 /4 1. SCOPE. This commercial item description (CID) establishes the government acquisition requirements for floor-mounted or bench-mounted grinding machines used to sharpen drill bits. 3 2. CLASSIFICATION. Floor-mount
3、ed machines shall be classified as type I and bench-mounted machines shall be classified as type II. Each type shall be hrther classified in various sizes which shall represent the drive motor horsepower ratings as listed in table I. The grinding machine type and size to be supplied shaii be specifi
4、ed in the acquisition order (see 7.4). 112 TABLE I. Drill bit erindine machine classifications. I (Benchmounted 1 2 I 1 /3 3. SALIENT CHARACTERISTICS. The grinding machine shaii comply with the requirements specified in this document and in American National Standards Institute (ANSI) standard B11.9
5、, “Safety Requirements for the Construction, Care, and Use of Grinding Machines“. Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data which may improve this document should be sent to: Defense Supply Center Richmond (DSCR), ATTN: DSCR-VBD, 8000 Jeffers
6、on Davis Highway, Richmond, VA 23297-561 O. AMSC NIA FSC 34 15 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M OL805 O002836 965 Characteristics A-A-5935 1 Requiremen
7、ts Size 1 3.1 Dimensions. Type I grinding machines shall meet the dimensional requirements specified in table II. Type II machines shall meet the dimensional requirements specified in table III. TABLE II. Floor-mounted grinding machine dimensional reauirements. Drill diameter (inches) Drill length (
8、inches) Point angle (degrees) Characteristics 1/16 to 1/2 1 /I 6 to 314 1/8 to 1-1/8 2 to 7 2 to 10 2 to 13 90 to 160 90 to 160 90 to 160 TABLE III. Bench-mounted grinding machine dimensional reauirements. i i Lip-relief angle (degrees) 6to i5 6to 15 6 to 15 , Flutes (number) 2 2 2 3.2 Tolerances. T
9、he grinding machine shall grind a drill bit point angle within +5 degrees of the setting through the full machine range of 90 to 160 degrees. The lip-relief angles shall be equal within fl degree. The point-angle and lip-relief angles shall be concentric around the drill body cylinder with no irregu
10、larities of more than 0.002 inch Total Indicator Readout (T.1.R). The ground finish of each drill point shall have no surface irregularities of more than 20 micrpinches. 3.3 Components. The grinding machine components shall include a grinding wheel, drive motor, and feed mechanism. The wheel shall c
11、omply with ANSI specifications B74.2, “Specifications for Shapes and Sizes of Grinding Wheels, and for Shapes, Sizes and Identification of Mounted Wheels“, and B74.13, “Markings for Identifjmg Grinding Wheels and Other Bonded Abrasives.“ The drive mor shall comply with National Electrical Manufactur
12、ers Association (NEMA) standard MG 1, “Motors and Generators.“ The feed mechanism shall be manuaiiy controlled and operated. 3.4 Accessories. Accessories such as automatic or semi-automatic feed mechanisms, wheel- truing devices, coolant systems, and work iights are not required unless othenvise spe
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