Week 7: Computer-Controlled Machining¶
Fab Academy lecture on Computer-Controlled Machining
Group Assignment¶
Safety training¶
First things first: eye and ear protection! Debris can come flying unexpectedly, whereas continuous noise can result in permanent hearing loss.
Key points to note:
• Verify clearance of tool path before cutting.
• Ensure that the collet is in good condition and the bit is fully inserted
• Ensure continuous air filtration, and dust vacuuming.
Types of bits¶
Bits come in various shapes and sizes, and from the first glance they can all seem the same. But it’s simpler than it seems: there are drill, and mills. Drill bits are desined to make holes – vertical cuts, and mills cut sideways, making horizontal cuts.
The grooves on the bits can vary also: clockwises, anti-clockwise, bidirectional. When changing the bits, you should first consider the side of the plywood in order to have smooth finishing. With drill bits being upcut, downcut
Just like drill bits and end mills, collets come in different sizes, to ensure compatible fit with bit diameter.
Tests¶
