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equipment:cnc:mill:induction-prompts [2024/06/05 22:22] – aarondsequipment:cnc:mill:induction-prompts [2024/11/19 21:42] (current) – external edit 127.0.0.1
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 ==== Tool Setup ==== ==== Tool Setup ====
  
 +Explain tool touch off process - requires electrical conductivity etc.
  
 +Observe connections to spindle and touch off point. 
 +
 +Demonstrate UI tool-table and touch off.
 +
 +Note occasional UI issues (point to MDI “M6 T1”).
 +
 +==== Indicating Z ====
 +
 +Demonstrate indicating Z, using the paper trick.
 +
 +Explain “running in air”, we will now load a program and run in air.
 +
 +===== Loading G-Code =====
 +
 +Observe USB sockets on the front panel of the machine, plug in USB.
 +
 +Explain “this is linux”, advise there are two locations to commit to memory:
 +
 +  * “/media/…” Where USB sticks will arrive
 +  * “/home/linuxcnc/” Where the “Documents” folder lives for your work
 +
 +Linux CNC is relatively fussy, and expects programs to be terminated with “M2” which applications like FlatCAM don’t bother with. Consider loading your g code into another copy of LinuxCNC before coming to the space (see docker image on forum).
 +
 +===== Double Checks =====
 +
 +It’s a good idea to read the first lines especially and double check your Z-height setting agrees with what is expected in your code.
 +
 +Observe the loaded g-code, identify initial Z-height.
 +
 +Jog the tool well above the workpiece and set expected Z-height.
 +
 +Cover e-stop and press go!
 +
 +Observer tool moving in air, all okay to proceed to a real run.
 +
 +===== Starting =====
 +
 +Ask the first inductee to set Z-height with paper trick.
 +
 +Cover e-stop, click go!
 +
 +Explain it is usually a good idea to pause after start and dial the feed rate down if this is the first time running this program.
 +
 +Emphasize the machine MUST NOT be left unattended.
 +
 +Discuss chip evacuation
 +  * Compressed air “Mist” coolant on “M7”
 +  * Align nozzle to blow chips into free space if possible
 +
 +Discuss lubrication
 +  * WD-40 should be default choice
 +  * Cutting oil lasts longer but impedes chip evacuation
 +
 +Demonstrate pausing and using a toothbrush to remove chips.
 +
 +Note when pausing machine the spindle will continue to spin and may be in contact with the workpiece. This can cause the workpiece to get very hot. If pausing for any length of time open lid to stop spindle
 +
 +Emphasise “pause early”. Very easy to restart from a pause. If at all uncertain, hit pause and figure it out. 
 +
 +Avoid getting tired or distracted by other things in the CNC room.
 +
 +Ensure every person being inducted has:
 +  * Used the wobbler to set one axis
 +  * Changed tool and set tool height
 +  * Indicated the Z position with paper trick
 +  * Started, paused, stopped a g-code program
 +
 +===== Clearing Up =====
 +
 +Take care
 +
 +  * Workpiece will likely be very sharp 
 +  * Workpiece could be very hot
 +  * Chips will be very sharp 
 + 
 +Consider wearing gloves from the Biohack area to minimise the transfer of chips to your clothes.
 +
 +Try to brush as much as you can using the CNC dustpan and brush. Then use the CNC shop vacuum cleaner.
 +Consider wiping down with blue role if any lubricant has been used.
 +
 +===== Shutdown Sequence =====
 +
 +Click “home” to save the next user time. E-stop machine and exit gmocappy.
 +
 +Shutdown the Raspberry Pi first before turning off machine power.
  
  
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