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Lecture 08

Lecture 08. Working Drawings. Working Drawings (3 Types). Detail Drawings provide all necessary information to manufacture a single component necessary views (shapes), dimensions, notes, mat’l Assembly Drawings

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Lecture 08

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  1. Lecture 08 Working Drawings Engineering Graphics & 3-D Modeling

  2. Working Drawings (3 Types) • Detail Drawings • provide all necessary information to manufactureasingle component • necessary views (shapes), dimensions, notes, mat’l • Assembly Drawings • provide information necessary to describe the fit and functionofinteracting components • necessary views (relations), few / no hidden lines & dimensions • Patent Drawings • provide information necessary to describe the features of an invention and support patent claims • explanatory (pictorial, shaded) representation • very highly structured legal document Engineering Graphics & 3-D Modeling

  3. Detail Drawing Engineering Graphics & 3-D Modeling

  4. Assembly Drawing Engineering Graphics & 3-D Modeling

  5. Assembly (Installation) Drawing Engineering Graphics & 3-D Modeling

  6. Working Documentation - Details • Title Block (Strip) • 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 • provides a structured arrangement of commonly required data about the components in the design • attached sheet or shown on assembly drawings • Revision Block • provides a structured arrangement of commonly required data about the history of the design • shown on each drawing Engineering Graphics & 3-D Modeling

  7. Title Block Information (Every Drawing) • Title Block: • Part Name (Part Number *) • Company (Client *) name & address • Signatures of Designer (Checker *) & Engineer • Dates of Completion & Approval • Scale • Drawing Number • Engineer’s Seal * • PE registration number Engineering Graphics & 3-D Modeling

  8. Revision Block Information (If On-Drawing) • Revision Block: • Revision • Where changes were made • Description • What change(s) were made • Checked by • Who approved the changes • Date • When the changes were made Engineering Graphics & 3-D Modeling

  9. BOM Information (If On-Drawing) • Bill of Materials (Parts List): • Reference Number • Description • Quantity Required • Part Number * • Detail Drawing Number * • Material * • Weight * Engineering Graphics & 3-D Modeling

  10. Costed Bill of Material Engineering Graphics & 3-D Modeling

  11. How to Cost Your BOM • Get Materials Information from Web: • Density (mass per unit volume) • www.matweb.com (or similar) • Note the density for each req’d mat’l (g/cc3) • Cost (cost per unit volume, or cost per unit) • www.mcmaster.com or www.onlinemetals.com (etc) • Calculate price/unit volume for large piece • Calculate cost/unit for fasteners for large quantity • From Excel, for the BOM: • Multiply to find price/unit • Roll up sub-assembly costs to find total cost/assembly • NOTE: This is only the material cost, there are additional costs reflected in the purchase price! Engineering Graphics & 3-D Modeling

  12. Costed Bill of Material Engineering Graphics & 3-D Modeling

  13. Project Components • Project Toy: • Teams of about 4 students • Parts Needed: • All part details & 5 assemblies of the design packet (team) • Roof (necessary views) • Cab • Seat • Engine Housing • Carriage, Wheels, Gears, Tread • (2) Arm Links, Cylinder, Slide • End Effector, Joints, Blade • Bill of Material with Cost Roll-Up (Excel Spreadsheet 8-1/2 x 11 format) • Cover Sheet (Installation Drawing) • All drawings on Team-Formatted Title Blocks • Produce entire model on 3-D Printer (.STL files → .Thing files) • Need a pretty solid base • Printing overhangs is a problem → use (breakaway) supports • One alternate end effector from each team member (bonus pts!) • Team Design Packet: (turn in electronically by 1:00 PM on Wed. 13 DEC) Sub-Assembly Sub-Assembly Sub-Assembly Final Assembly Sub-Assembly Engineering Graphics & 3-D Modeling

  14. Submission Instructions To submit your team’s term project, do the following steps: • Open the F: drive from your computer • Go to the folder labeled tmpfiles • Go to the folder labeled IENG 248 Term Projects • Create/find the folder with your team name, and open it • Copy all of the following files into the folder: • Each individual part file • Each individual drawing file • Any assembly file(s) • Any other files that your team wishes to submit for grading • Send an e-mail to the instructor with the following subject: IENG Final Project – and add your team name at the end • In the body of the e-mail text: • List each team member and the part files / drawings / etc. that they created for the project – one student per line. • Hit the send button • Go enjoy your break! Engineering Graphics & 3-D Modeling

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