1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther
2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this
3、publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49
4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS5768 RATIONALE AS5768 has been reaffirmed to comply with the SAE five-year rev
5、iew policy. AEROSPACE STANDARD AS5768 Issued 2008-08 Reaffirmed 2013-07 Tool, Stripper, Electrical Insulation, General Specification For 1. SCOPE 1.1 Specification Requirements This specification covers design requirements, performance requirements, and methods of procurement for tools and associate
6、d accessories used to strip aerospace vehicle electrical wire and cable. Aerospace vehicle electrical wire has stranded conductors with protective plating and specialized insulation. Poor quality wire strippers or mismatched blades can compromise the performance of wiring. 1.2 Intended Use The purpo
7、se of this specification is to define the electrical wire or cable tools design performance, interchangeability, repeatability, and reliability. The specification establishes standard criteria for the design, manufacture and qualification of stripping tools. Wire or cable stripped by the tool shall
8、be specified with the tool (see 3.1.1). The specification provides a system of procurement and quality control of specified wire stripping tools. 1.3 Qualification Products procured from this specification require a supplier to be on a Qualified Product List at the time of request for purchase (see
9、6.4). 1.4 Part Number Structure Unless otherwise specified in the detail specification the part number structure for the tool shall be AS5768/Y XXXX 2. APPLICABLE DOCUMENTS The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications sh
10、all apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes appl
11、icable laws and regulations unless a specific exemption has been obtained. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AIR1351 Manufacturers Identificat
12、ion of Aerospace Electrical and Electronic Wiring AS5768/1 Tool, Stripper, Manually Actuated, Electrical Insulation, Round Wire, Size 10 to 30 AS5768/2 Tool, Stripper, Manually Actuated, Small Grip, Electrical Insulation, Round Wire, Size 16 to 30 2.2 NCSL Publications Available from National Confer
13、ence of Standards Laboratories, 2995 Wilderness Place, Suite 107, Boulder, CO 80301-5404, Tel: 303-440-3339, www.ncsli.org. NCSL Z540-1 General Requirements for Calibration Laboratories and Measuring and Test Equipment 2.3 U.S. Government Publications Application for copies is address to DODSSP, Sub
14、scription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, http:/assist.daps.dla.mil/quicksearch/. MIL-STD-202 Department of Defense, Test Method Standard, Electronic and Electrical Component Parts SD-6 Provisions Governing Qualification 3. REQUIREMENTS 3.1 Detail Specifi
15、cations The tool requirements shall be as specified herein and in accordance with the applicable detail specification. In the event of any conflict between the requirements of this specification and the detail specification, the latter shall govern. 3.1.1 Criteria for Tool Inclusion The criteria for
16、 defining a tool in a detail specification is that a component document, intended to be used with the tool, must be controlled by a component preparing activity such as a user, government, or non-government standard body. It is the responsibility of the wire and cable specification preparer to deter
17、mine if the specific tool can be used to strip the applicable wire or cable. After the tool has been determined to be acceptable for the wire or cable, the wire or cable preparing activity is recommended to request SAE International to establish an AS5768 detail specification (slant sheet) which sho
18、uld be referenced in the component specification. Requests for tools to be listed in AS5768 shall be made by the component preparing activity to SAE International (see 6.7.1). 3.1.2 Detail Specification Tool Requirements Each detail specification shall include as a minimum the following. a. The deta
19、il specification shall specify the wire or cable detail specification and part number, if necessary, with the corresponding tool part number for each tool, or tool-blade combination, or other accessories. Part number shall designate all replaceable parts and removable components such as gripper pads
20、, blades, wire stop, bench mount, and other accessories in the detail specification. Replaceable parts such as screws, springs, hardware, covers, and miscellaneous parts shall be defined in the manufacturers instruction sheet supplied with each tool. The basic tool and accessories shall include a pa
21、rt number on the body of each part in the detail specification. SAE INTERNATIONAL AS5768 Page 2 of 14_ b. The length of the insulation strip shall be specified for each tool or tool-blade combination, if different than specified herein (see Table 3). d. Detail blade dimensions are recommended to ins
22、ure stripping performance characteristics, but not required. The basic tool footprint dimensions shall be definitive enough to insure replacement of the tool in a storage container without modification of the container. Accessory footprint dimensions shall be definitive enough to insure inter-change
23、ability with manufacturers. d. The required operation characteristics (see 3.7). e. The life test operating cycles (see 3.10) f. The Metric equivalents may be provided to the nearest 0.01 mm and shown as (x.xx). Metric equivalents are calculated based on 1-inch equals 25.4 mm. g. Size, weight, and p
24、ower requirements of tools shall be commensurate with the tool application. Maximum size and weight (including accessories) shall be included as a requirement on each detail specification. h. Tools with V shaped cutting blades, other than rotating V shaped blades (see Figure 3) or shearing type blad
25、es shall not be specified. 3.2 Materials (see 5.1) All materials shall be suitable for the fabrication/produce ability or maintenance of aerospace hardware when used on land or sea. Materials shall be specified in the detail specification. 3.3 Tool Design Characteristics Examination (5.2) 3.3.1 Manu
26、ally Actuated Mechanical Wire Stripper for Round Wire Using Split Blades Design (see Figure 1 and 5.2.1) Each blade cavity shall be cylindrical, as shown in Figure 1. If die dimension are specified as a minimum each blade profile shall be defined in relation to the dimensions of the wire, as shown i
27、n Figure 2. Tools with V shaped cutting blades shown in Figure 3 or shearing blades shall not be specified. FIGURE 1 - SPLIT BLADE WIRE STRIPPER DESIGN SAE INTERNATIONAL AS5768 Page 3 of 14_ FIGURE 2 - DIMENSION REQUIREMENTS FOR SPLIT BLADE ACCESSORIES FIGURE 3 - V SHAPE (KNIFE TYPE) BLADES ACCESSOR
28、IES THAT FORM SQUARE WIRE STRIP CAVITIES (UNACCEPTABLE) 3.3.2 Manually Actuated, High Frequency Signal Cable Strippers Design Examination (see 5.2.2) Design characteristics shall be defined in the detail specification. 3.4 Tool Assembly Instruction Examination (see 3.1.2a and 5.3) Each tool specifie
29、d with accessories shall be provided with concise and clearly written individual instructions. The tool shall be easily assembled and disassembled in accordance with the tool instruction without the use of special tools. Tool instructions shall be formatted with the following information: a. Title:
30、The instructions shall include AS5768 and suppliers part numbers. b. Detail Tool Pictorials: The pictorials shall include AS5768 and manufacturers part numbers. c. Detail Accessories Pictorials: The pictorial shall include AS5768 accessories, and manufacturers part numbers. d. Safety Instructions: I
31、nstructions shall be provided on how to safely select and operate each tool. e. Operational Instructions: Instructions shall be provided on how to select and operate each tool. The instructions shall include applicable component part numbers that can be stripped by the tool. f. Maintenance Instructi
32、ons: Information shall be clear, concise, and include pictorials as needed. g. Replaceable Part List: The instructions shall include AS5768 and manufacturer designated part numbers. All replaceable parts (see 3.1.2a) designated in the detail specification by part number shall be included in the asse
33、mbly instructions. All parts that can be removed to assemble accessories shall be designated in the assembly instructions by part number or a physical description sufficient to permit replacement (i.e., screw thread and length description, etc.). h. Supplier Information: The instructions and tool pa
34、ckaging shall include address and telephone number(s) of suppliers. .002 +.002 -.000 Flat on end of cutting surface required SAE INTERNATIONAL AS5768 Page 4 of 14_ 3.5 Visual Examination (see 5.4) The tool and accessories shall exhibit no cracks, broken parts, or jagged edges. Tools with accessories
35、 shall be constructed to allow maintenance and repair necessitated by normal operational wear and handling. Tool dimensions shall be in accordance with the detail specification. 3.5.1 Visual Examination of Manually Actuated Wire Stripper for Round Wire Using Split Blades (see Figure 1 and 5.4.1) Dis
36、assemble and reassemble the tool with replaceable blades in accordance with the tool assembly instructions (see 5.3). When visually examined the blade cavity shall be as shown in Figure 5. The blade cavity shall be cylindrical and form a complete perimeter. A slight asymmetry of the two halves of th
37、e blade may be acceptable if the blade does not damage the conductor when stripped (see 3.7.1). The unacceptable blade defects as shown in Figure 6 have asymmetrical shapes that do not form complete perimeters or cylinders. FIGURE 5 - ACCEPTABLE SPLIT BLADES IN A CLOSED POSITION FIGURE 6 - UNACCEPTA
38、BLE SPLIT BLADES IN A CLOSED POSITION 3.5.2 Visual Examination of Manually Actuated High Frequency Signal Cable Strippers (see 5.4.2) Tool shall be examined for dimensions and physical characteristics as defined in the detail specification. 3.5.3 Tool Assembly Weight (see 5.4.3) The weight of the to
39、ol with all accessories attached shall be as specified in the detail specification. 3.6 Marking Examination (see 5.5) The identification marks shall be durable and withstand typical handling and usage. The identification marks shall be clearly readable after all specified tests. Trademarks and logos
40、 when used for identification rather than the manufacturers name and address shall be registered in AIR1351. SAE INTERNATIONAL AS5768 Page 5 of 14_ 3.7 Tool Insulation Strip Performance (see 5.6) Tool operation characteristics shall be defined in the detail specification. 3.7.1 Insulation Strip Comp
41、ression Force (see 5.6.1) The insulation strip force required to complete the cycle of the tool shall not exceed the value specified in the applicable detail specification. 3.7.2 Wire Insulation Strip Performance Characteristics (see 5.6.2) The conductor may exhibit nicks or scrapes as shown in Figu
42、re 7, but the base metal shall not be exposed. Indentations caused by the pads (jaws) gripping the insulation, when specified, are acceptable, provided the insulation or topcoat is not torn or separated and the indentation does not reduce the wire diameter to less than 80% of the original wire diame
43、ter.The stripped wires shown in Figures 8 through 10 are failures (unacceptable strips). FIGURE 7 - ACCEPTABLE CONDUCTOR PLATING DAMAGE FIGURE 8 - BROKEN STRAND (UNACCEPTABLE STRIP) FIGURE 9 - UN-STRANDED, SPLAYED, OR BIRD-CAGED CONDUCTOR (UNACCEPTABLE STRIPS) FIGURE 10 - INTER-TAPE OR FRAYED INSULA
44、TION EXPOSURE-” L” EXCEED 0.039 OR 50% OF THE INSULATIONS OUTSIDE DIAMETER WHICH EVER IS GREATER (UNACCEPTABLE STRIPS) SAE INTERNATIONAL AS5768 Page 6 of 14_ 3.7.3 Round Cable Insulation Strip Performance Characteristics (see 5.6.3) The round cable strip performance characteristics shall be as speci
45、fied in the detail specification. 3.8 Shock Characteristics (see 5.7) The tool and/or required accessories attached shall meet marking legibility and the tool insulation strip performance requirement, after being subjected to the shock test (see 3.6 and 3.7). 3.9 Humidity Characteristics (see 5.8) C
46、orrosion that does not affect the performance characteristics of the tool is acceptable. The tool and/or required accessories attached shall meet marking legibility and the tool insulation strip performance requirement after being subjected to the humidity test (see 3.6 and 3.7). 3.10 Life Character
47、istics (see 5.9) The tool and/or required accessories attached shall strip the wire or cable the number of cycles specified in the detail specification. On the last strip, the tool and worn blades shall meet the stripping performance requirement (see 3.7) and the tool operation characteristics (see detail specification). After exposure to the number of specified cycles, if the blades are replaceable, the tool shall be disassembled and blades and grippers (if specified) replaced in accordance with the tool assembly instructions (see 3.4). The tool and
