1、0b 2073473 285 MIL-D-80077B 10 February 1975 SUPERSEDING MIL-D- 80077A 23 July 1969 MILITARY SPECIFICATION DRILLING MACHINES, UPRIGHT, TURRET TYPE, SLIDING HEAD, BED TYPE, NUMERICALLY CONTROLLED This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. S
2、COPE 1.1 Scope. This specification covers floor mounted, elec- tric motor driven, numerically controlled, automatic, turret type, drilling, boring and tapping machines having a sliding head, vertical indexing turret assembly, and a fixed height type work bed, with equipment and accessories as descri
3、bed herein. * 1.2 Classification. The numerically controlled drilling ma- chines covered by this specification are of the following sizes. a 2-axis or 3-axis machine control unit (MCU) as specified (see 6.2.1). The size supplied shall be as specified, with either Size 1 2 Drill Ca acity + 1-3/4 inch
4、 2. APPLICABLE DOCUMENTS 2.1 Military publications. The following documents of the issue in effect on date o invitation for bids or request for proposal form a part of this specification to the extent specified herein. SPECIFICATIONS MIL-M-18058 Machinery, Metal and Woodworking, Support Equipment an
5、d Associated Repair Parts, Preparation for Delivery of IFSC 34131 THIS DOCUMENT CCli Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 9999906 2071474 LL1 - MIL-D-80077B STANDARDS MIL-STD-129 Marking for Shipment and Storage MIL-STD-130 Identification
6、 Marking of U.S. Military Property MIL-STD-461 Electromagnetic Interference Characteristics Requirements foi Equipment (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activi
7、ty or as directed by the contracting officer . ) * 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of. invitation for bids or request for proposal shall apply. NATIONAL BUREAU OF
8、 STANDARDS HANDBOOK H28 Screw-Thread Standards for Federal Services * OCCUPATIONAL SAFETY AND HEALTH ACT (OSHA) OF 1970 Title 29, Code of Federal Regulations, Chapter XVII, Health Part 1910, and amendments. Administration Standards Occupational Safety and (AppLication for copies should be addressed
9、to the Superintendent of Documents, Government Printing Office, Washington, DC 20402.) AMERICAN NATIONAL STANDARDS ANS B5.1 T-slots, Their Bolts, Nuts, Tongues and Cutters (Application for copies should be addressed to the American National Standards Institute, Dept. 969, 1430 Broadway, New York, NY
10、 10018.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m 999990b 2071475 058 m MIL-D- 80077B AMERICAN GEAR MANUFACTURERS ASSOCIATION AGMA 360 Manual for Machine Tool Gearing (Application for copies should be addressed to the American Gear Manufac
11、turers Association, 1330 Massachusetts Ave., NW, Washington, DC 20005.) NATIONAL FIRE PROTECTION ASSOCIATION STANDARDS NFPA No, 70 National Electric Code NFPA No. 79 Electrical Standard for Metalworking Machine Tools (Application for copies should be addressed to National Fire Protection Association
12、, 60 Batterymarch Street, Boston, MA 02210.) JIC ELECTRICAL STANDARDS FOR GENERAL PURPOSE MACHINE TOOLS (Application for copies should be addressed to the National Machine Tool Builders Association, 7901 Westpark Drive, McLean, VA 22101.) ELECTRONIC INDUSTRIES ASSOCIATION (EIA) STANDARDS RS-227 RS-2
13、44 RS-267 RS-273 RS-281 RS-358 One-Inch Perforated Paper Tape Character Codes for Numerical Machine Tool Control Perforated Tape Axis and Motion Nomenclature for Numerically Controlled Machines Interchangeable Perforated Tape Variable Block Format for Positioning and Straight Cut Numerically Control
14、led Machine Tools Construction Standards - Numerical Machine Tool Control Subset of USA Standard Code for Information Interchange for Numerical Machine Control Perforated Tape (Application for copies should be addressed to Electronic Industries Association, Engineering Department, 2001 Eye Street, N
15、W, Washington, DC 20006.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W 9999906 2073476 T94 MIL-D-80077B (Technical society and technical association specifica- tions and standards are generally available for reference from libraries. groups and
16、using Federal agencies.) They are also distributed among technical 3. REQUIREMENTS 3.1 First Article approval, If First Article approval is required (see 6.2.1), inspection therefor shall be in ac- cordance with Section 4. A First Article comprises a pre- production model or initial production sampl
17、e; approval involves testing and evaluating the First Article for con- formance with the requirements herein before, or in the initial stage of, production under a contract. 3.2 Desi n. The machine shall be new and one of the manu- tapping and boring, and limited milling, in accordance with requirem
18、ents herein. ing of the table in the X and Y directions, numerically, by tape command, of table and turret, numerically, by tape command. The ma- chine design and construction shall include all components, parts and features necessary to meet the performance re- quirements specified herein. All part
19、s subject to wear, breakage, or distortion shall be accessible for adjustment, replacement, and repair. 3.2.1 Operating controls. Controls for all functions of the machine shall b e arranged on a console, pendant or in a lo- cation convenient to the operators normal work station. Controls, such as p
20、ush buttons, dials and switches, shall be functionally arranged and clearly identified to facilitate use. The modes of operating the equipment shall be by manual jog, semi-automatic and full tape control. Manual controls shall be furnished to provide operator dial-in control of X, Y, and Z axes, for
21、 data not punched in the tape and for programming without tape. 3.2.2 Safety devices. The machine and its control unit shall have saety devices for the protection of the operator and the equipment. Covers, guards or other safety devices shall protect the operator from moving parts and electrical equ
22、ip- ment that may cause injury, but shall not interfere with proper operation of the machine. Safety devices such as limit trips, positive stops and warning signals shall protect the equipment against overload, overtravel or malfunction of a component. Except as otherwise specified by the procuring
23、facturer -+- s current models, capable of precision drilling, The Z-axis MCU shall control position- The 3-axis MCU shall control all functions 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I 9999906 2071477 920 MIL-D-80077B activity, the machine
24、 shall comply with the standards promul- gated under OSHA which are applicable to the machine itself. Exceptions and additional requirements for safety and health shall be as specified (see 6.2.1). 3.2.3 Lubrication. Means shall be provided to insure ade- quate lubrication for all moving parts. All
25、filters, if used, shall be cleanable or replaceable. Each lubricant reservoir shall have means for determining fluid level. All oil holes, grease fittings and filler caps shall be accessi- ble. 3.2.4 Interchangeability. To provide for replacement of worn parts, all parts bearing the same part number
26、 shall be functionally interchangeable, and shall be dimensionally identical within the manufacturing tolerance limits in use by their manufacturer. 3.3 Construction. The machine shall be so constructed that when installed and connected to power, it will be ready for operation. The machine shall be
27、constructed of parts which are without defects and free of repair. The structure shall be capable of withstanding all forces encountered during operation of the machine to its maximum rating and capacity without permanent distortion. 3.3.1 Castings and forgings. All castings and forgings shall be fr
28、ee of defects, scale and mismatching. Welding, peening, plugging, or filling with solder or paste shall-not be used for reclaiming any defective part. 3.3.2 Welding, brazing or soldering. Welding, brazing, or soldering shall b e employed only where specified in the original design. None of these ope
29、rations shall be employed as a repair measure for any defective part. 3.3.3 Fastening devices. All screws, pins, bolts, and similar parts shall be installed in such a manner as to pre- vent change of tightness. Those subject to removal or ad- justment shall not be swaged, peened, staked, or otherwis
30、e, permanently deformed. 3.3.4 Surfaces. All surfaces of castings, forgings, molded parts, stampings, and welded parts shall be cleaned and free 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-from sand, dirt, fins, sprues, flash, scale, flux and o
31、ther harmful or extraneous materials. External surface edges shall be either rounded or beveled unless sharpness is re- quired to perform a necessary function. specified herein, the condition and finish of all surfaces shall be commensurate with the manufacturers standard commercial practice. 3.3.5
32、Paintin . Unless otherwise specified (see 6.2.1), facturers standard commercial practice. Except as otherwise the mac 4 ine s all be painted in accordance with the manu- 3.3.6 Threads. All threaded parts shall be in the inch system and shall conform to Handbook H28. 3.3.7 Dials. All feedscrew dials,
33、 when furnished, shall be grad- in the inch system. Graduations to indicate stock removal or tool movement shall be in increments of not more than 0.001 inch, Dial diameters shall be such that the graduations may be easily read. Dials shall be perma- nently and legibly engraved or etched, and shall
34、have a nonglare finish. 3.3.8 Plates. All words on speed and feed indicating plates and instructyon plates shall be in the English language, en- graved, embossed or stamped in plain boldface, easily read characters on a contrasting background. 3.3.9 Gears. All gears used in the machine and its compo
35、- nents shallbe machined in the inch system and shall conform to the applicable requirements of AGMA 360. 3.4 Components. Components of the basic machine shall con- sist primarily of a base, column, sliding head, turret assembly, work table, driving mechanisms, operating controls, and numerically co
36、ntrolled MCU. * 3.4.1 Base. The base shall be ribbed and braced to minimize distortionand deflection. The base shall form a foundation for the entire machine and shall provide a positive means for securing the column to the base. When a hydraulic or coolant system is incorporated in the design, thei
37、r reservoirs may be integral with the base or may be furnished as separate external units. The base shall provide access to components 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W 999990b 2071479 7T3 W MIL-D-80077B housed within for adjustment
38、 or servicing. A leadscrew arid brake, complete with protective shields, and motor to con- trol saddle motion shall be provided. Guideways with full bearing surface shall be provided to accept a sliding saddle. Saddle guideways shall have a surface hardness not less than Rockwell C-50. Means for lev
39、eling shall be provided around the periphery of the base. * 3.4.2 Column. The column shall be of box-like construction, ribbed ZZlFaced to minimize distortion and deflection under normal tool loads. The column shall accommodate a sliding head with turret assembly, speed and feed components and drivi
40、ng mechanisms. Guideways shall be provided for vertical travel of the sliding head. The column shall incorporate in its design a power operated leadscrew for vertical adjust- ment of the sliding head, and after positioning the head shall I remain in any position to which it is adjusted within its fu
41、ll I length of travel. A graduated scale or other visible means shall provide an indication of height setting. I I I I * 3.4.3 Saddle. The saddle shall be designed and proportioned to withstandall loads which may be imposed during normal operation of the machine, The saddle shall be mounted on the g
42、uideways of the base. The saddle shall be provided with protective shields for leadscrews. Automatic means shall be provided to prevent saddle movement after positioning. Saddle traverse shall be by power. All saddle functions shall be controlled by the MCU and by manual means. Guideways having a su
43、rface hardness not less than Rockwell C-50 shall be pro- vided at the saddle top to accept a worktable. 3.4.4 Worktable. The worktable shall be designed and pro- portioned to withstand any loads that may be encountered during normal operations. The worktable shall be mounted on the guideways of the
44、saddle with full bearing surface. A coolant trough integral with the table shall be provided, with means for draining into the coolant reservoir. T-slots shall be provided; the number and configuration shall be *as specified (see 6.2.1). T-slots shall be in accordance with ANS B5.1. The worktable sh
45、all be provided with protective shields for leadscrews. Automatic means shall be provided to prevent movement of table after positioning. Table traverse shall be by power. All worktable functions shall be controlled by the MCU. Manual means for controlling position shall be provided. 7 Provided by I
46、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M 0b 2071480 415 M MIL-U-80077B The sliding head shall be designed and nents, turret ram, power feed mechanism, spindle drive me- chanism, and when applicable because of design, the feed and speed mechanism. ways of
47、 the column and shall be adjustable to any position along the column over the full range of head travel. ment shall be by an independent power device. shall be by jog button controlled by the operator. having a surface hardness not less than Rockwell C-50 shall be provided on the front side of the h
48、ead for suppotting the sliding turret ram. the indexing turret and its compo- The head shall traverse vertically on guide- Adjust- Guideways Actuation 3.4.6 Turret ram. The turret ram shall be designed and pro- portioned to support an indexing turret and its components. The ram shall traverse vertic
49、ally on the guideways of the sliding head. Ram actuation shall be by power, operated and initiated by the machine control unit. Ram slides shall have adjustable means to compensate for wear. The turret ram face shall provide machined or scraped surfaces for an indexing turret. * 3.4.6.1 Spindle gear box. The spindle gear,box shall be totally enclosed. Spindle drive shafts and gearing shall be of steel or steel alloy, heat treated
