2. Project Overview CNC Introduction Applying CNC Designing for CNC
CNC Manufacture
Open Design for CNC Challenge
Total VEX Robotics manufacture

3. LESSON 06

4. Lesson 06 Starter
Learning objective: Manufactured an entire VEX Clawbot from fabricated component parts, applied post processing techniques to form and shape each part, and considered the quality checks required to achieve quality assurance.
Using stock files, your task today is to assemble a fully working plasma cut VEX Clawbot. To achieve this, you will need to: 1. Organise your components onto the bed of the plasma cutter 2. Send the file to cut 3. Post process all of the parts 4. Form the parts to a high tolerance 5. Assemble all parts together 6. Assemble on control and motion components 7. Prove through testing you have manufactured a high quality outcome
Key words: CAD, Library, heat processes, acrylic, MDF, profile, forming.

5. Full fabrication Fabricating a full VEX Clawbot
As part of this lesson, your task is to keep a simple manufacturing notebook. In this book you are tasked with making notes on all of the stages of make, what you have achieved, what works and does not, and any issues you incurred in the manufacture. Once you complete the build, you will submit your notebook and finished product for assessment. Your teacher will assess your: - fabrication to a high tolerance - ability to record the fabrication process - approach to solving problems - use of technical language and terminology

6. Full fabrication Final outcome
Here are three Clawbot robots The first has been made using thin steel on the plasma cutter, with a poor hole accuracy and surface finish, but excellent accuracy of the forming using the sheet metal bender. The second has been made using thicker steel on the industrial laser cutter, with excellent hole accuracy but less accurate forming on the sheet metal bender due to its toughness. The third has been made using thicker steel but with only the required build holes, reducing fabrication time but making it less adaptable to other design builds.

7. Full fabrication Grading fabrication
As part of GCSE (AQA) assessment, students can be graded on the following areas:
- Level of skill and accuracy - Use of appropriate tools, materials and technology skilfully and safely - Level of independence
- Use of quality control checks for accuracy - Commercial viability of the outcome
Your teacher will grade you against these in order to provide you with a “make” grade for your project work today.

8. Lesson 06 Plenary
As a class, let us consider the following questions? A. How do manufactured parts and purchased VEX parts feel different? B. What features do VEX parts and manufactured parts share? C. What issues do manufactured parts propose for competition robots? D. How could you use CNC machined parts in a different context away from robotics?

9. Lesson 06 Summary Today you have:
Learning objective: Manufactured an entire VEX Clawbot from fabricated component parts, applied post processing techniques to form and shape each part, and considered the quality checks required to achieve quality assurance.
Today you have:
Manufactured an entire VEX Clawbot from CNC made parts
Identified and solved issues relating to forming and post processing
Developed a clear approach for quality checking CNC made products.