DLA A-A-59422-2000 PUNCHING SHEARING NOTCHING AND COPING MACHINE METAL MECHANICAL DRIVE [Superseded DLA MIL-P-45042 F CANC NOTICE 1 DLA MIL-P-45042 F DLA MIL-P-45042 E DLA MIL-P-45.pdf
《DLA A-A-59422-2000 PUNCHING SHEARING NOTCHING AND COPING MACHINE METAL MECHANICAL DRIVE [Superseded DLA MIL-P-45042 F CANC NOTICE 1 DLA MIL-P-45042 F DLA MIL-P-45042 E DLA MIL-P-45.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-59422-2000 PUNCHING SHEARING NOTCHING AND COPING MACHINE METAL MECHANICAL DRIVE [Superseded DLA MIL-P-45042 F CANC NOTICE 1 DLA MIL-P-45042 F DLA MIL-P-45042 E DLA MIL-P-45.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
1、A-A-59422 19June2000 SUPERSEDING 27 November 1991 MIL-P-45042F Size 4 5 COMMERCIAL ITEM DESCRIPTION Nominal capacity (tons) Throat depth (inches) 50 12 50 20 PUNCHING, SHEARING, NOTCHING AND COPING MACHINE, METAL, MECHANICAL DRIVE 7a 7b Sa 9a 10a The General Services Administration has authorized th
2、e use of this commercial item description for all federal agencies. 70 15 70 22 90 19 110 19 135 29 1. SCOPE. This commercial item description (CID) covers mechanically driven metalworking machines used for performing punching, shearing, notching, and coping operations on steel bars, structural shap
3、es, and plates of the dimensions and strengths specified herein. 2. CLASSIFICATION. The machine shall be classified and identified by size in accordance with the defining characteristics specified in table I. The size of machine to be supplied shall be specified in the acquisition order (see 7.1(c).
4、 TABLE I. Product classifications. Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: Defense Supply Center Richmond (DSCR), ATTN: DSCR-VBD, SO00 Jefferson Davis Highway, Richmond, VA 23297-5610. AMSC NIA FS
5、C 3445 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59422 3. SALIENT CHARACTERISTICS 3.1 Design. Unless otherwise specified (see 7.1(d), the machine shall accomp
6、lish not less than the five operations of punching, notching, coping, flat bar shearing, and structural shape shearing. All stations shall be powered by the same drive. The frame and base of the machine shall be an integral unit designed to rest on a flat surface. The machine shall be manufactured i
7、n accordance with American National Standards Institute (ANSI) B 11.5, “Ironworkers - Safety Requirements for Construction, Care, and Use“ (DoD adopted). Provisions suitable for hoisting the machine shall be provided. The base shall provide a means for securely bolting the machine to the floor. The
8、machine shall include all components, parts, and features necessary to meet the performance requirements specified herein. All parts subject to wear, breakage, or distortion shall be readily accessible for adjustment, replacement, or repair. 3.2 Controls. The press shall be equipped with all the con
9、trols required for machine operations. All operating controls shall be located convenient to the operator. All operations of the machine shall be controlled by two independent anti-repeat foot switches, except for punch spotting which may be by hand lever. One anti-repeat foot switch shall control p
10、erformance of the punch and notcher. The second anti-repeat foot switch shall control bar cutter, shear, and coper operations. 3.3 Drive. The machine shall be provided with a mechanical drive. The drive shall include a drive motor, transmission, clutch, flywheel, drive shaft, connecting rod or cam,
11、slide, and ram. 3.3.1 Drive motor. The manufacturers standard motor provided to the commercial market shall be supplied. 3.3.2 Transmission. The transmission shall consist of a gear or a V-belt system. V-belt systems shall be capable of transmitting the required power without belt slippage. V-belt s
12、ystems shall have provisions for adjusting belt tension. 3.3.3 Clutch. A clutch or similar controlling device for engaging and disengaging the machines operating functions shall be provided. 3.3.4 Flywheel. The flywheel shall be a balanced assembly having adequate mass and rotational speed to provid
13、e supplementary power to the motor drive while performing work operations. 3.3.5 Drive shaft. The drive shaft shall be of adequate size and material to prevent deflection when subjected to maximum torque. The drive shaft shall be mounted on replaceable anti-friction bearings or bushings of a size, t
14、ype, and precision class suitable for the application. 3.3.6 Connecting rod and cam. The connecting rod or cam shall be arranged to convert rotary motion to reciprocating motion in driving the rams of the machine. The rod or cam shall be mounted on replaceable anti-friction bearings or bushings of a
15、 size, type, and precision class suitable for the application. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59422 3.3.7 Slide and ram. The slide and ram shall provide reciprocating motion for the machine operations. The ram shall be of solid
16、 or box-type construction, with reciprocating action guided by a slide or gib type arrangement. The guide or gib shall be adjustable and replaceable. 3.4 Punch station. The punch station shall consist of a punch holder, die holder, and stripper. The punch station shall be capable of punching holes o
17、f the sizes specified (see 7.1(e). The station shall have a throat depth suitable to accommodate the material size specified (see 7.1(f). Means shall be provided to lower the punch for positioning over the workpiece. 3.4.1 Punch holder. The machine shall be provided with a punch holder for holding t
18、he punch in position under the ram. The punch holders shall be constructed of alloy steel and securely hold the punch in position. The punch holders shall assure alignment of the punches with the dies. The punch holders shall be designed to accommodate standard round and shaped hole punches. 3.4.2 D
19、ie holder. The machine shall be provided with a die holder for holding the die in position. The die holder shall be constructed of hardened steel precision ground to securely hold the dies in such a manner to prevent the dies from rotating. The die holder shall be designed to accommodate standard ro
20、und and shaped hole dies. 3.4.3 Stripper. The machine shall be provided with a stripper for automatically releasing the workpiece from the punch when the punch is withdrawn from the die. The stripper shall permit changing the punch without removing the stripper from the machine. 3.4.4 Punches and di
21、es. When required (see 7.1(g), punches and dies of the sizes and shapes identified shall be provided. The punches and dies shall be tool steel, hardened, and ground for accuracy. Each punch and die shall be permanently marked for size and identification. 3.5 Notcher station. The notcher station shal
22、l be capable of notching triangular cuts in metal to meet the requirements specified (see 7.1(h). The notcher shall be equipped with an adjustable gauge designed to govern the depth of the cut. A guard shall be provided for protecting the operator when the notcher is operating. The blades of the not
23、ched shall be replaceable. 3.6 Coper station. The coper station shall be capable of coping square cuts in metal to meet the requirements specified (see 7.1(i). The coper shall be provided with a gauge to govern the depth of cut and a protective guard as specified for the notcher. The blades of the c
24、oper shall be replaceable. 3.7 Flat bar shear station. The bar shear station shall consist of an upper moveable blade and a lower stationary blade, and shall be capable of shearing the maximum width flat bar stock specified (see 7.1j). The camber of the sheared edge of the “drop off“ cut shall be 1/
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