IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling1 Lecture 08 Working Drawings

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling2 Working Drawings (3 Types)  Detail Drawings n provide all necessary information to manufacture a single component necessary views (shapes), dimensions, notes, mat’l  Assembly Drawings n provide information necessary to describe the fit and function of interacting components necessary views (relations), few / no hidden lines & dimensions  Patent Drawings n provide information necessary to describe the features of an invention and support patent claims explanatory (pictorial, shaded) representation very highly structured legal document

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling3 Detail Drawing

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling4 Assembly Drawing

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling5 Assembly (Installation) Drawing

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling6 Working Documentation - Details  Title Block (Strip) n provides a structured arrangement of commonly required data about the interpretation of, and the responsibility for, the design shown on each drawing  Bill of Material n provides a structured arrangement of commonly required data about the components in the design attached sheet or shown on assembly drawings  Revision Block n provides a structured arrangement of commonly required data about the history of the design shown on each drawing

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling7 Title Block Information (Every Drawing)  Title Block: n Part Name (Part Number *) n Company (Client *) name & address n Signatures of Designer (Checker *) & Engineer n Dates of Completion & Approval n Scale n Drawing Number n Engineer’s Seal * PE registration number

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling8 BOM Information (If On-Drawing)  Bill of Materials (Parts List): n Reference Number n Description n Quantity Required n Part Number * n Detail Drawing Number * n Material * n Weight *

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling9 Bill of Material

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling10 How to Build Your BOM  Get Materials Information from Web: n Density (mass per unit volume) (or similar) Note the density for each req’d mat’l (g/cc 3 ) n Cost (cost per unit volume, or cost per unit) or (etc) Calculate price/unit volume for large piece Calculate cost/unit for fasteners for large quantity  From Excel, for the BOM: n Multiply to find price/unit n Roll up sub assembly costs to find cost/assembly n Similarly, roll up unit weights, format the BOM spreadsheet, save, and include the info for the project

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling11 Indented Bill of Materials  A “BOM” is a document that: n Lists all parts in an assembly n Shows the quantity of components n Allows for the roll-up of costs, weight n Shows the sequence of assembly Each indentation shows the components, quantity, and cost (weight) that comprise the sub-assembly

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling12 Example: Manual Juicer

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling13 Example: Manual Juicer

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling14 Example: Manual Juicer  Materials of construction: n Aluminum (sandcast) body n Rubber feet  Cost of the artifact: n $ 0.32 in aluminum n $ 0.04 in rubber n $ 0.36 total, in materials n $ ??? in labor, shipping, packaging, etc.

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling15  Indented BOM & Cost Roll-up: (1) Juicer Assembly$ 0.36 (1) Body Sub Assembly$ 0.18 (1) Body Casting$ 0.14 (4) Rubber Feet$ 0.01 (1) Strainer Casting$ 0.05 (1) Lever Casting$ 0.10 (1) Hinge Pin$ 0.03 Example: Manual Juicer

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling16 Bill of Material

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling17 Revision Block Information (If On-Drawing)  Revision Block: n Revision Where changes were made n Description What change(s) were made n Checked by Who approved the changes n Date When the changes were made

IENG 248 D. H. Jensen 6/2/2016Engineering Graphics & 3-D Modeling18 Project Components  Skid Loader Toy: n Produce for 3-D Printer Need a pretty solid base Printing overhangs is a problem n 3 teams of about 5 students Partial random assignment n Parts Needed: Scoop Arms (2) (mirror) Wheels (4) (assemble rims & tires) Left side Right side n Assembly Drawings & Detail Drawings