1
how does the CNC cut material?
it spins a bit at high speeds while going through the material
what is CAM?
code that tells the CNC how/what to cut
where do we make CAM/toolpaths? (name the program)
fusion 360
what's the red button on the yellow pendant?
emergency stop button, stops the cut
what does CAD stand for
computer aided design
if you forget the settings for CAM, where can you find them?
how do you post-process a part?
filing, deburring, or sanding
where can you find stock materials to cut parts from?
outside the CNC room on the wooden shelf (1/8" aluminum), on the shelf in the CNC room (1/4" aluminum, both polycarbs)
what's the black/white switch on the yellow pendant?
what does CAM stand for?
computer aided manufacturing
what is the spoilboard and what's its use?
piece of wood under the material that's ok to cut into (doesn't damage the bit)
what is the VFD (point at it) and what does it do?
a reason a bit can break
overwork, vibration, overheat, overall bad settings
what's the blue button on the yellow pendant?
it can start and stop cuts while the CNC is running a cut
what does CNC stand for?
computer numerical control
name any 3 parts of the CNC
any of these work: enclosure, vacuum hose, dust shoe, gantry, VFD, spinter, router motor, bit, bit collet, spoilboard, t-slot deck, yellow pendant
name 2 ways we try to prevent bit breakage
experimentation with new settings, chip clearance (vacuum), talking to professionals or other teams to learn from them
why's it bad that bits break?
costs money to replace, wastes time replacing the bit/re-zeroing, can mess up the part
what is spindle warmup routine and how do you run it?
1. warms up the spindle to get it ready to cut (if it isn't warmed up the bit may or may not break)
2. c5 (Cuts -> 5) spindle warmup routine on the shopbot window (on the computer)
what does VFD stand for?
variable frequency drive
if something's going wrong during a cut, what are 2 ways to stop the CNC?
hitting SPACE on the computer, pressing STOP on the shopbot window, hitting the emergency stop on the pendant, or pressing the blue start/stop button on the pendant
3 things to do before starting a cut
warm up the spindle, turn on the vacuum, close the enclosure door
3 things to NOT do while the CNC is running
open the enclosure door, leave the room without anyone at the machine, take off your safety glasses
where is the on/off button for the CNC?
on the CNC near the whiteboard wall, there's a gap in the enclosure to switch it on and off
what is zeroing the CNC and how do you do this? (XYZ axises)
1. sets home for a cut, lets you jog home (to your XY zeros)
2. XY zero on the control panel, Z zero with the metal plate