Unit 3: Engineering Design, Drawing & 3D Printing

Spatial Visualization

ISOMETRIC & Orthographic Drawing

Spatial visualization is an essential skill in taking ideas that initially only exist in the mind to something that can be communicated clearly to other people and eventually turned into products, structures and systems. 

It is an important skill for professionals within the science, technology, engineering and math (STEM) fields (particularly engineering). 

Engineers use spatial visualization skills whenever three-dimensional concepts, devices and ideas are being discussed. 

For example, chemical engineers use spatial visualization when studying three-dimensional molecules, while mechanical engineers use spatial visualization when designing prosthetic limbs that require multiple motors, gears, linkages, bearings and shafts to fit within a single assembly.



Isometric drawings are used to create a visually appealing representation of an object that shows it from multiple sides.

Orthographic drawings are used to provide accurate and detailed views of an object for technical and engineering purposes. 


Both techniques have their place in the design and engineering process, and the choice between them depends on the specific requirements of the project.

Isometric Drawings

Orthographic Drawings

Isometric Drawing:

Orthographic Drawing:

Orthographic Projection (basic).ppt

3D PRINTING

MAKING OBJECTS & 3D PRINTING USING TINKERCAD


In this project you will get to explore digital 3D design and 3D printing. 

The 3D Printed Keychain for beginners project is a project that everyone will love. This fun project is a fun and simple way to turn an idea on the screen into a custom designed and self-made plastic keychain.


SIGN UP FOR YOUR OWN ACCOUNT USING YOUR TVDSB GOOGLE LOGIN

https://www.tinkercad.com


ASSIGNMENT #1 - TINKERCAD KEYCHAIN

TASK: Use TinkerCad to create a 3D printed keychain. Go to the TinkerCad website and sign up using your TVDSB Google account. Follow along with these tutorials here and here.

It must have the following elements


Submit Two files one screenshot (png/jpg) and the exported .STL file to Google Classroom


DOWNLOADS & RESOURCES

1) Assignment Download
2) Student Action Checklist
3) Evaluation Rubric


Keychain How To Video Chamfer and Fillet Corners 


>>TINKERCAD WEBSITE <<

Engineering Design

Engineering Design

-Engineering design process

-Sketching orthographic and isometric views of objects

-Documenting sketches, notes and ideas in an engineering notebook

-Writing a proposal

-Negotiating and preparing team work contracts

-Preparing a bill of materials

The engineering design process is a series of steps that guides engineering teams as we solve problems. The design process is iterative, meaning that we repeat the steps as many times as needed, making improvements along the way as we learn from failure and uncover new design possibilities to arrive at great solutions.

Ask: Identify the Need & Constraints

Engineers and designers ask critical questions about what they want to create, whether it be a skyscraper, amusement park ride, bicycle or smartphone. These questions include: What is the problem to solve? What do we want to design? Who is it for? What do we want to accomplish? What are the project requirements? What are the limitations? What is our goal?

Research the Problem

This includes talking to people from many different backgrounds and specialties to assist with researching what products or solutions already exist, or what technologies might be adaptable to your needs.

 Imagine: Develop Possible Solutions

You work with a team to brainstorm ideas and develop as many solutions as possible. This is the time to encourage wild ideas and defer judgment! Build on the ideas of others! Stay focused on topic, and have one conversation at a time! Remember: good design is all about teamwork!

Plan: Select a Promising Solution

For many teams this is the hardest step! Revisit the needs, constraints and research from the earlier steps, compare your best ideas, select one solution and make a plan to move forward with it.

Create: Build a Prototype

Building a prototype makes your ideas real! These early versions of the design solution help your team verify whether the design meets the original challenge objectives. Push yourself for creativity, imagination and excellence in design.

Test and Evaluate Prototype

Does it work? Does it solve the need? Communicate the results and get feedback. Analyze and talk about what works, what doesn't and what could be improved.

Improve: Redesign as Needed

Discuss how you could improve your solution. Make revisions. Draw new designs. Iterate your design to make your product the best it can be.

And now, REPEAT!

Reverse Engineering Project

Student pairs reverse engineer objects of their choice, learning what it takes to be an engineer. Groups each make a proposal, create a team work contract, use tools to disassemble a device, and sketch and document their full understanding of how it works. They compile what they learned into a manual and write-up that summarizes the object's purpose, bill of materials and operation procedure with orthographic and isometric sketches. Then they apply some of the steps of the engineering design process to come up with ideas for how the product or device could be improved for the benefit of the end user, manufacturer and/or environment. They describe and sketch their ideas for re-imagined designs (no prototyping or testing is done). To conclude, teams compile full reports and then recap their reverse engineering projects and investigation discoveries in brief class presentations. 


After this activity, students should be able to:

PROJECT STEPS

Student pairs / groups will reverse engineer objects of their choice, learning what it takes to be an engineer. Each group will create the following as part of this project.


P1. Title Page with description that summarizes the object's purpose (Must contain a drawing if your object)

P2. Table of Contents

P3. Objects drawing- 

P4. Step-by-step: Step-by-step description of how to work the device 

P5. Bill of Materials

P6. Written Purpose of the devices function or purpose

P7. Team Contract

P8. List of improvements of devices design or things that would make it better

P9. Conclusion page of project:

P10. Project Reflection: What Improvements could be done to this project in your opinion

Please make a folder in your Google Drive. Under "TIJ1O" make another folder called "ENGINEERING DESIGN" and make a copy of the above 5 files for yourselves. 

PROJECT TIMELINE

Days 1-2: Assign teams, brainstorm and write-up proposal

Day 2: Proposal due (approved or revised); draft team contract

Days 2-3: Team contract completed, bring in device/product

Days 4-6: Take apart the device, with thorough documentation

Days 6-9: Sketch parts, prepare bill of materials and manual

Days 9-11: Write report, get feedback, come up with improvement ideas, prepare conclusion

Days 11-12: Organize, edit, wrap-up

Days 13-14: Class oral presentations

3D Maze.mp4