DLA A-A-59395-2000 DRILLING MACHINE RADIAL FLOOR-MOUNTED [Superseded DLA MIL-D-80262 B CANC NOTICE 1 DLA MIL-D-80262 B (1) DLA MIL-D-80262 B DLA MIL-D-80262 A (2) DLA MIL-D-80262 A.pdf
《DLA A-A-59395-2000 DRILLING MACHINE RADIAL FLOOR-MOUNTED [Superseded DLA MIL-D-80262 B CANC NOTICE 1 DLA MIL-D-80262 B (1) DLA MIL-D-80262 B DLA MIL-D-80262 A (2) DLA MIL-D-80262 A.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-59395-2000 DRILLING MACHINE RADIAL FLOOR-MOUNTED [Superseded DLA MIL-D-80262 B CANC NOTICE 1 DLA MIL-D-80262 B (1) DLA MIL-D-80262 B DLA MIL-D-80262 A (2) DLA MIL-D-80262 A.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、pzq A-A-59395 22June2000 SUPERSEDING 15 March 1990 MIL-D- 80262B COMMERCIAL ITEM DESCRIPTION DRILLING MACHINE, RADIAL, FLOOR-MOUNTED The General Services Administration has authorized the use of this commercial item description for all federal agencies. 1. SCOPE. This commercial item description (CI
2、D) covers floor-mounted, radial drilling machines intended for use in general-purpose drilling, tapping, boring, counterboring, spot facing, and reaming operations on large andor heavy workpieces. 2. CLASSIFICATION. The radial drilling machines shall be of the following sizes and radial arm lengths
3、as shown in table I. The size and radial arm length to be furnished shall be as specified (see 7.2(b). 3. SALIENT CHARACTERISTICS 3.1 General requirements. The radial drilling machine shall be new and one of the manufacturers current models capable of operation in accordance with the requirements he
4、rein. All parts subject to wear, breakage, or distortion shall be accessible for adjustment, replacement, and repair. 3.2 Components. The radial drilling machine shall include, as a minimum, the following components: 3.2.1 a. The base shall support the other elements of the machine and shall incorpo
5、rate materials, shape, and mass to minimize adverse vibration and deflection. The base shall provide a means for leveling and anchoring the machine. The top of the base shall be machined as a work surface. Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data
6、that may improve this document should be sent to: Defense Supply Center Richmond (DSCR), ATTN: DSCR-VBD, 8000 Jefferson Davis Highway, Richmond, VA 23297-5610. AMSC NIA FSC 3413 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handling Service
7、sA-A-59395 The machine maximum drill diameter and radial arm length shall not be less than the stated requirements of the size ordered nor greater than the next larger size shown. The maximum drill diameter is the machine rating when drilling cast iron. The maximum drill diameter is less when drilli
8、ng steel. The radial arm length of the drilling machine is defined as the horizontal distance between the column face and the centerline of the drill head spindle at its maximum travel distance from the column. 1 2 3 3.2.2 Table. Unless otherwise specified (see 7.2(c), the radial drilling machine sh
9、all be supplied with a plain box table. The table shall have at least two machined work surfaces that are adjacent at 90 degrees to each other. A means to attach the table to the base shall be provided. Unless otherwise specified (see 7.2(d), the table dimensions and number of work surfaces shall be
10、 that considered by the manufacturer as standard. 3.2.3 T-slots. The number and size of the base and table T-slots shall be as specified (see 7.2(e). The dimensions of the T-slots shall conform to the requirements of American National Standards Institute (ANSI) B5. lM, “T-slots, Their Bolts, Nuts, a
11、nd Tongues“. 3.2.4 Column. The column shall be designed to resist forces developed during drilling operations and minimize vibration. The column shall pivot on the base or the drill head radial arm shall pivot about the column to provide angular motion of the drill head assembly. Unless otherwise sp
12、ecified (see 7.2(f), the column shall have automatic lubrication and the drill head radial arm shall be equipped with a wiping system to keep the column clean. 3.2.5 Radial arm. The radial arm shall provide rigid support to the drill head assembly, power transmission, and drive motor. The radial arm
13、 shall resist forces and minimize vibration. The radial arm shall be vertically adjustable on the column and have a means for clamping the arm to the column after adjustment. Unless otherwise specified (see 7.2(g), the radial arm shall rotate in a horizontal plane a minimum of 135 degrees left and r
14、ight of center. Unless otherwise specified (see 7.2(h), safety devices shall be provided to prevent vertical radial arm overtravel and, if equipped with a screw and nut drive system, to prevent unintended downward radial arm movement because of screw and nut failure. 2 Licensed by Information Handli
15、ng ServicesA-A-59395 3.2.6 Drill head assemblv. The drill head assembly shall move horizontally along the radial arm. Means shall be provided to clamp the drill head assembly to the arm after adjustment. 3.2.6.1 Spindle and quill. Unless otherwise specified (see 7.2(i), the spindle shall be provided
16、 with the taper considered by the manufacturer as standard. Unless otherwise specified (see 7.2(j), the spindle shall be provided with manual feed, adjustable power feed, and an adjustable depth stop. Power feed shall be disengaged automatically when the depth stop is reached. The operator shall be
17、able to manually position the spindle and quill and then engage the power feed. The spindle and quill shall have a counterweight, counterbalance, or both to automatically return the spindle and quill to its highest position when the manual feed lever is released or the power feed is disengaged. 3.2.
18、6.2 Motor and power transmission. The machine shall have a variable speed motor or have a transmission that allows spindle speed adjustment. Unless otherwise specified (see 7.2(k), a clutch shall be provided to prevent motor damage during an overload. 3.2.7 Clamping system. The clamping system for t
19、he radial arm, drill head assembly, and column shall be powered either by an electric, hydraulic, or combination system. The clamping system shall be provided with interlocks to prevent powered movement while the clamp is engaged. During a loss of machine power, the clamping system shall not unclamp
20、. 3.2.8 Controls. The controls shall be located for convenient access by the operator. Unless otherwise specified (see 7.2(1), the following switches and controls, as a minimum, shall be provided: a. b. d. e. f. g. h. i. C. On/off power switch Emergency stop button Column movement Vertical radial ar
21、m movement Horizontal drill head assembly movement Power feed Spindle speed Coolant flow Spindle rotation direction selector 3.2.9 Lubrication system. Unless otherwise specified (see 7.2(m), the drilling machine shall be equipped with an automatic lubricating system to direct oil flow from the reser
22、voir to all machine components requiring continuous lubrication. A means shall be provided for determining oil level in the reservoir. The automatic lubricating system shall include a cleanable or replaceable filter. Upon loss of pressure in the automatic lubrication system, the drilling machine sha
23、ll automatically stop. Machine parts requiring periodic manual lubrication shall be readily accessible through doors or removable panels. 3.2.10 Coolant system. Unless otherwise specified (see 7.2(n), the drilling machine shall be flood cooled. As a minimum, the coolant system shall consist of a res
24、ervoir, pump, strainer, and all necessary piping. The coolant system shall be equipped with a method to control the rate of coolant flow from the reservoir and to direct coolant flow to the drilling area. When specified (see 7.2(0), an optional filtration system shall be provided. 3 Licensed by Info
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