This report covers the work that was carried out by a group of researchers on CNC (Computer Numerical Control) programming and machining. The task was to choose and design a creative item to be machined using CNC machining, which then required to write a code using CNC language. Prior to the machining process, we did a Computer Aided Design (CAD) drawing of the Mercedes Benz logo. The logo was further modified with the final model drawn using Auto Desk Inventor. We used foam for our model and a 10 diameter end mill tool.
The main problem that was experienced was the cutting time; the model took longer to be complete. The cutting time was affected by the complexity of the design, chosen tool size and the cutting technique. We learnt from the demonstration that the shorter the constructed code the more robust it is, using a bigger tool is more efficient in terms of saving energy and time, and that if the code is correct the CNC machine model becomes identical to that of the product Design.
Contents
Abstract
Acknowledgements
Declaration
1 Introduction
1.1 Coordinate system
1.2 Advantages and disadvantages of CNC machining
1.2.1 Advantages
1.2.2 Disadvantages
1.3 Motivation
1.4 Objectives
1.5 PRODUCT REQUIREMENT SPECIFICATIONS
1.5.1 Requirements
1.6 Concept
1.6.1 Concept Motivation
1.7 Design Modification
1.8 3D drawing
1.8.1 Engineering drawing
1.8.2 G - Code
1.9 Methodology
1.9.1 Procedure and Modelling
1.9.2 Programming
1.9.3 Machining
1.9.4 Precautions
1.10 OBSERVATIONS AND RESULTS
1.11 Discussion
1.12 Conclusion
Appendices
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