AA-DSE2-1998.pdf
Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- ABOUT THE ALUMINUM ASSOCIATION The member companies of The Aluminum Association, Inc., represent approximately 85 percent of domestic production of primary ingot and shipments of U.S. aluminum mill products. Mill products include sheet and plate; foil; extrusions; electrical conductor and wire, rod and bar. In addition to producers of primary ingot and mill products, the associations membership also includes secondary smelters, foundries and producers of master alloy and additives. The association is a primary source of statistics, standards, and economic and technical information on aluminum and the aluminum industry in the United States. NOTICE Disclaimer The use of any information contained herein by any member or non-member of lhe Aluminum Association is entirely voluntary. The Aluminum Association has used its best efforts in compiling the information contained in this book. While the Association believes that its compilation proced- ures are reliable, it does not warrant, either expressly or impliedly, the accuracy or complete- ness of this information. The Aluminum Associa- tion assumes no responsibility or liability for the use of the information herein. The Aluminum Association published standards, data, specifications and other technical materials are reviewed at least every five years and revised, reaftïtmed or withdrawn. Users are advised to contact The Aluminum Association to ascertain whether the information in this publication has been superseded in the interim between publica- tion and proposed use. Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- Drafting Standards for Aluminum Extruded Products Ninth Edition October, 1998 The Aluminum Association 900 lgrn Street, N.W. Washington, D.C. 20006 Copyright O1 998 Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-AA DSE2-ENGL 1998 Ob04500 0039379 518 = Members of the Task Group For Revision of Drafting Standards For Aluminum Extruded Products Mr. Fred L. Murrin, Werner, Chairman Mr. James Fisher, Reynolds Metals Company Mr. Cliff C. Hartelius, V.A.W. of America, Inc. Mr. Andrew Krammes, Alumax Extrusions, Inc. Mr. Bill W. Moore, Spectrulite Consortium, Inc. Mr. John Sanders, Alcan Extrusions Mr. James S. Sanderson, Kaiser Aluminum ratio of length to width is 3 or 4 to 1. REVISION BALLOONS - Approximate width of .01” for a .1875“ diameter circle, surrounding .o65 revision letter, located as near as practical to the upper left of revised dimension or feature. 8 Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- Illustrations - special tolerances Figure 8 : Special tolerances indicated apply all the way across shape unless other tolerance is shown U Figure 10: Special tolerances indicated apply all the way across shape unless other tolerances are shown Figure 72: Special tolerances indicated apply all the way across shape unless other tolerances are shown ENDS ONLY Figure 9 : Special tolerances apply only at points dimensioned, ¡.e., tolerances across center of shape difier from those across ends Figure 11: Special tolerances apply only at points dimensioned, ¡.e., tolerances across center of shape differ from those across ends I x.xxx':= I BASE ONLY Figure 7 3 : Special tolerances indicated apply only at dimensional points, ¡.e., top and bottom of shape. Flatness tolerances apply between dimensioned points I I BASE ONLY Figure 14: Special tolerances indicated apply all the way across shape unless other tolerances are shown Figure 7 5 : Special tolerances indicated apply only at dimensioned points, ¡.e., top and bottom of shape. Flatness tolerances apply between dimensioned points 9 Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- VI; VI1 - Notes; Lines and Line Work Section VI - Notes Special tolerance note: Special tolerance notes will always be placed directly above the title block near the right-hand margin. The note is required where any toler- ance is closer than standard tolerance is especially difficult to hold. The note will be: CRITIC= TOLERANCE. Exposed surface note: in the event the entire outside surface is exposed, a note reading ALL SURFACES EXPOSED will be shown to the right of the actual-size view. For hollow shapes the note will read ALL OUT- SIDE SURFACE EXPOSED. Radii notes: When a section involves several like radii it is often more practical to detail these by means of a note. This note is to be placed in the lower right-hand comer of the drawing, above the title block. Examples: .XXX R on a l l inside and outside comers. (Use when a XXX R on a l l inside comers (hllets). (Use when a general XXX R on all outside corners. (Use when a general note general note is applicable to all c o m e r s . ) note is applicable to all inside comers.) is applicable to all outside comers.) Section VI1 - Lines and Line Work Weight of l i n e s : Two weights of lines are shown and considered desirable for section drawing. The two weights are heavy and medium light. Heavy line Approx width .O25 in. Medium light line Approx width .O10 in. H e a v y lines are used for shape outline only. Medium light l i e for all other lines. The actual widths of the above lines may vary with the type and size of the drawing as long as the proper contrast is retained. To insure proper reproduction it is necessary that all lines shall be uniform and f i r m . Outlines: The outline of the section should be about 2% times heavier than all other dimension lines. Leaders: Leaders are composed of medium light lines, terminated by an arrow head. They should be curved only when necessary. The arrow head should touch the surface view to which the notes or dimension applies. The leader should either precede or extend from the end of the note, and should run parallel to the body of the note for a distance and thence toward the part to which the note applies. Add EXCEPT AS NOTED to the above notes when applicable. As a second choice, it is permissible in some cases to detail radii as follows: XXX R (3). The draftsman should make certain that this method of detailing could not be confused or misread. Typical note. Uniform wall thicknesses, of the like, may be detailed by a TYPICAL note when practical. Examples: .XXX TYP (after dimensions on the drawing) .Mut TYP wail thickness (general notes). .XXX TYP wall thickness except as shown (general .XXX TYP REF where inside and outside dimensions notes). are also specified. Revisions: A 3/i6 inch diameter circle, including the corresponding revision letter from the revision block, will be shown as near as practical and to the upper left of the part revised. Extension l i n e s : A rnedium light line that indicates the distance measured when the dimension is placed outside the figure. Such lines should begin approximately 0.030 inch away from the object and extend O. 100 inch beyond the dimension line. Center line: A center line is a medium light line in weight and may be used to indicate shape symmetry within applicable tolerance range. Center line should not be used for dimensional purposes unless the shape can be dimen- sioned in no other manner. Dimension l i n e s : All dimension lines and their corre- sponding dimensions should be placed so that they may be read from the bottom of the drawing. They should termi- nate approximately 0.030 inch from where the dimension or note inserted. If possible, they should be at least 0.380 inch from the outline and uniformly spaced, a t least 0.250 inch apart. The figures should be centered in relation to the dimension line and midway between extension lines, except where there are several parallel dimensions, in which case they should be uniformly spaced, with the dimensions stagged. A dimension line is a medium light line. 10 Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-AA DSE2-ENGL 3770 m Ob01150U 0037303 520 E VI1 - Lines and Line Work Cross sectioning: Uniformiy spaced medium light lines used as a graphic illustration of the material. In the case of aluminum, the solid lines run from the lower left to the upper right, and the broken lines from the upper left to the lower right, all the 45 O to the principal axis of the draw- ing. The lines are to be spaced by eye and the distance or space between the lines is constant and governed by the size of the section. The space should range from approxi- mately 0.090 inch on the smaller sections to approximately 0.250 inch on the larger. Figure 16 Arrowheads: Dimension lines should end with carefully made arrowheads. The desired standard is one with a sharp point that touches the extension line and has a flat back. The ratio of length to width should be between 3 and 4 to 1. Ail arrowheads on the same drawing should be nearly the same size as possible. Figure 17 Fd points. All focal points of radii or diameters should be indicated by a neat dot about 0.030 inch diameter. Imaginary points: Points of tangency, apex points and other reference points will be shown by a small cross whenever their location needs to be specified. Figure 19: Tangency points Figure 20: Apex of angles other characteristics: Refer to Section XII for tolerances regarding flatness, straightness and twist. Values for the requirements should be noted on the drawing if anything other than standard required. Figure 18 11 Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- VIII - Lettering Section VIII - Lettering Types: Free hand lettering requirements for section - drawings are met in the single stroke, extended, vertical, gothic style letter. The lettering shall be evenly spaced and of sufficient solidness to permit good reproduction. Generally a letter than - with a width of 1% times its height is considered a good 11 in. x 17 in. All sizes - should be slightly more extended in width. Height: The various heights of notes, and dimensions throughout the drawing are as follows: 11 x 17 in. proportion, although the smaller letters (3/32 inch high) - 3/32 in. high for revision notes; tolerances (limits but not basic figure); references (Ref); general and local notes; and dimensions '/e in. high for above categories ' / 8 in. high for product nomenclature 3/la in. high for Drawing number; obsolete; inactive ABC DE FGH iJ KLMNOPQR STUVWXYZ 1234567890 2 I 7 %2 43165 1 y 1 6 EXTRUDED SHAPE I 17% WAS 113 REF -Fix.- 3/32 +.o10 -.Oo5 -l- 12 Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or networking permitted without license from IHS -,-,- IX - Views Section IX - Views Type of view: The graphic representation of the product will be a cross-sectional view of the extrusion that is perpendicular to the length. This will be the principal and only view of the product with the exception of stepped extruded shapes. In the case of stepped extruded shapes the drawing will depict two or more cross-sectional areas and their relationship to each other. Enlargement of view: The preferred scale for section drawings is actual size. When the drawing would be so small that the detailing would not be clear, an enlarged drawing should be made. Sections and portions of sections should be drawn to the following scales: 1-2-4-8-ó-32 times actual size. Listed below are the preferred drawing scales to be used with sections of various sizes: Diameter of Circumscribing Circle of Section or Portions of Section to be Enlarged, in inches ? h $4 1 2 3 4 5 6 Over 6 Times Enlarged 16 8 4 3 1 1 1 1 1 Diameter of Resultant Circumscribing Circle in inches 4 4 4 4 3 4 5 6 Whenever the principal view is enlarged, it becomes necessary to show also an actual-size view. Whenever possible this view is to be placed at the top center of the sheet; however, exceptions are permitted where space is not available. General arrangement of view: Whenever possible the view should be placed the same as shown on the drawing submitted by the extrusion user. However, when no drawing is submitted, the draftsman should place view so that the finished drawing has an appearance of balance and is easily read. No portion of a section or its details should be closer than one inch from the top or left hand margin so that clips, punch holes, etc. will not obliterate vital dimensions or part of the shape. Assembling shapes: When an extruded shape assembles with another extrusion, the manner of assembly should be indicated by phantoming in the other extrusion on the actual-size view and the extrusion identified by use of an assembly note. L _ _J Figure 21 The extent of the assembly information noted on section drawings is determined by the procedures followed by individual producers. Auxiliary views: Should a portion of the section be of such contour that it is not possible to detail clearly in the scale used (see “Enlargement of View”), decision can then be made by the draftsman as to the advisability of showing an enlarged or exaggerated view in a scale which permits proper detail and definition pf the subject. It is always good practice to place such views in the same position as the principal view. 13 Copyright The Aluminum Association Inc. Provided by IHS under license with AA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 04:20:25 MDTNo reproduction or netw
