Week 7: Computer-Controlled Machining

1. Introduction

Computer-Controlled Machining uses CNC machines to subtract material and create precise physical objects from digital designs. Unlike 3D printing, it removes material from a solid block, making it ideal for large and strong structures.

2. Tools Used

• SOLIDWORKS – 3D CAD design software
• Vectric Aspire – CAM toolpath generation software
• CNC Machine – subtractive manufacturing machine
• Wood sheets / machining material
• Cutting tools (end mills, drill bits)
• Clamps and fixtures

3. Step-by-Step Process

1. Design in SOLIDWORKS

I created precise sketches and 3D parts in SOLIDWORKS, then built an assembly to check fit and alignment.

2. Export DXF File

The design was converted into DXF format to prepare 2D profiles for CNC machining.

3. Vectric Aspire Toolpath Setup

DXF files were imported into Aspire to create toolpaths and optimize cutting strategy.

4. CNC Machine Setup

Material was fixed using clamps, tool installed, and origin set before machining.

5. CNC Machining Process

The CNC machine followed toolpaths to cut the material precisely.

6. Assembly

After machining, all parts were cleaned and assembled into the final structure.

4. How CNC Works

CNC machining converts CAD designs into G-code. The machine moves along X, Y, and Z axes removing material layer by layer using cutting tools.

5. Learning Outcomes

• 2D design development for CNC milling
• DXF export workflow from CAD to CAM
• Toolpath generation in Vectric Aspire
• CNC machine setup and safe operation

6. Conclusion

This assignment helped me understand the full CNC workflow from design to fabrication and assembly. I gained practical experience in CAD, CAM and machining.