Working Drawings Stephen W. Crown Ph.D.
Working Drawings A final set of drawings providing all the details and information needed to manufacture and assemble a finished design. A final set of drawings providing all the details and information needed to manufacture and assemble a finished design. Components Components 1. Detail Drawings 2. Assembly Drawings 3. Bill of Materials
Detail Drawings A drawing of each individual part that clearly reveals all details A drawing of each individual part that clearly reveals all details One part per sheet One part per sheet Purchased parts not drawn Purchased parts not drawn Components Components Every feature clearly dimensioned Every feature clearly dimensioned Tolerance specified for every dimension Tolerance specified for every dimension Material specifications Material specifications Finishing and surface treatment specs. Finishing and surface treatment specs. Drawing Information (Part name, number, date, drawn by, revision number, etc.) Drawing Information (Part name, number, date, drawn by, revision number, etc.)
Drawing Information
Assembly Drawings May use one or several views (multiview, pictorial, section, exploded, detail view, etc.) to clearly show how parts are assembled and interact. May use one or several views (multiview, pictorial, section, exploded, detail view, etc.) to clearly show how parts are assembled and interact. Dimensions and tolerances between parts are given (specified gaps, orientation, torque, etc.) Dimensions and tolerances between parts are given (specified gaps, orientation, torque, etc.) Hidden lines are often omitted Hidden lines are often omitted Individual parts are identified with balloon tags Individual parts are identified with balloon tags
Bill of Materials A list of all parts needed for an assembly A list of all parts needed for an assembly Includes all parts manufactured and purchased Includes all parts manufactured and purchased Includes balloon tag reference number, part name, part number, quantity, and material Includes balloon tag reference number, part name, part number, quantity, and material
Parts List / Bill of Materials