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Project 8.1a Model A Button Maker Introduction Interpreting dimensioned drawings is an important engineering skill. Using drawings to create a computer model of a part is also important. You learned earlier in this course that a sketch is the documentation foundation for related technical work. Communicating this information effectively allows a group of people to function as a design team. In this project you will further develop your modeling skills and your ability to use a computer as an efficient communication tool. The skills that you learned earlier in this course will be systematically applied to model the eight remaining parts needed for the Button Maker Assembly. The parts with the dimensions are listed below. Project Lead The Way, Inc. Copyright 2012 DRAFT – DO NOT COPY OR DISTRIBUTE IED – Project 8.1a Model A Button Maker – Page 1
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Project 8.1a Model A Button Maker - PBworkspanthertech.pbworks.com/.../P8_1a_ModelButtonMaker.docx · Web viewBASE PLATE Model 2 RUBBER FOOT Model 3 8-32 X 3/8 UNC SCREW Model 4 VERTICAL

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Page 1: Project 8.1a Model A Button Maker - PBworkspanthertech.pbworks.com/.../P8_1a_ModelButtonMaker.docx · Web viewBASE PLATE Model 2 RUBBER FOOT Model 3 8-32 X 3/8 UNC SCREW Model 4 VERTICAL

Project 8.1a Model A Button MakerIntroduction

Interpreting dimensioned drawings is an important engineering skill. Using drawings to create a computer model of a part is also important. You learned earlier in this course that a sketch is the documentation foundation for related technical work. Communicating this information effectively allows a group of people to function as a design team.

In this project you will further develop your modeling skills and your ability to use a computer as an efficient communication tool. The skills that you learned earlier in this course will be systematically applied to model the eight remaining parts needed for the Button Maker Assembly. The parts with the dimensions are listed below.

Equipment Computer with 3D CAD solid modeling program Engineering notebook CAD Files (Teacher will provide as applicable)

Project Lead The Way, Inc.Copyright 2012

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Procedure1. Model and assemble the parts and subassemblies shown using the drawings

provided.

Sub Assembly

Item PART NUMBER Required Optional

Bottom Press Assembly

Assemble

1 BASE BEARING Model2 1/4 – 20 CAP NUT Model3 SMALL SNAP RING Model4 HANDLE PIVOT PIN ModelA BASE SUB-ASSEMBLY A AssembleB LOWER DIE SUB-ASSEMBLY B AssembleC HANDLE SUB-ASSEMBLY C AssembleD UPPER DIE SUB-ASSEMBLY D Assemble

Base Sub-Assembly A

Assemble

1 BASE PLATE Model2 RUBBER FOOT Model3 8-32 X 3/8 UNC SCREW Model4 VERTICAL SUPPORT Model5 5/16-18 HEX NUT Model5 5/16-18 X 9/16 BUTTON CAP SCREW Model6 RUBBER HANDLE SLEEVE Model7 METAL HANDLE INSERT Model8 7/16-14 X 1 3/8 SOCKET SET SCREW Model

Lower Die Sub-Assembly B

Assemble

1 BOTTOM DIE PLATE Model2 5/16-18 HEX NUT Model3 SEQUENCE LEVER ARM Model4 ¼ WASHER Model5 ¼-20 X 5/16 BUTTON CAP SCREW Model6 LOWER DIE 1 OUTER RING Model7 LOWER DIE 1 CENTER Model8 ¼-20 X ¾ SOCKET HEAD SCREW Model9 LOWER DIE 2 CENTER Model

10 LOWER DIE 2 OUTER RING Model11 LOWER DIE 2 SPACER Model12 BOTTOM DIE SPRING Model

Handle Sub-Assembly C

Assemble

1 HANDLE BODY Model2 ROLLER SPACER Model3 ROLLER INNER BEARING Model4 ROLLER OUTER BEARING Model

Upper Die Sub-Assembly D

Assemble

1 UPPER DIE CENTER SUPPORT Model

Project Lead The Way, Inc.Copyright 2012

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2 LARGE SNAP RING Model3 HANDLE RETENTION PIN Model4 UPPER DIE CENTER PIN Model5 UPPER DIE SPRING Model6 UPPER OUTER RING Model7 UPPER DIE PRESSURE RING Model8 #8-32 X 0.7 SCREW Model9 UPPER DIE CENTER Model

10 ¼-20 X 1 3/16 SOCKET HEAD SCREW Model

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Button Press TolerancesAll parts have the following tolerances:

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X.X = +/- .020X.XX = +/- .010X.XXX = +/- .005

2. Model and assemble this subassembly shown using the drawings provided.

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3. Model and assemble this subassembly shown using the drawings provided.

Project Lead The Way, Inc.Copyright 2012

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4. Model and assemble this subassembly shown using the drawings provided.

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5. Model and assemble this subassembly shown using the drawings provided.

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Conclusion1. Why are drawings composed of different line conventions?

2. What is the purpose of a sectional view?

3. What is the purpose of an auxiliary view?

4. Why are symbols used instead of words to identify hole types?

5. What is the format for calling out a tapped hole?

6. What advantage is there to using algebraic equations instead of numerical values when defining the dimensions of a CAD model?

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7. What three types of constraints can be applied to CAD sketches or models?

8. How would a consumer most likely come into contact with an assembly view drawing?

9. What advantages do CAD drawings have over paper sketches?

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