What are three things are CNC machinist must do?
- Program
- Tool setup
- Part setup
What a retention knob?
Device mounted in a NMTB milling holder and gripped by power actuated drawbar mechanism in a CNC milling machine spindle to secure the mating tapers tightly together. On top of CAT type toolholders.
What must a program name start with?
The letter O and 5 digits
O12345
Canned cycle
Doing the same thing in more than one place.
Do we do a dry run at rapid feed to save time?
No
Can we assume apart from CNC does not have to be inspected.
No
What axis is spindle?
The Z axis
Conversational programmming
Does not use G and M code in programming.
While the program running you can’t change the feed and speed.
False
Toolholder
Where is each tool held?
Machine zero
Is set by the manufacture.
The machine needs to know the diameter of the tool
True
Which direction should we program the machine to get the best finish.
Left
Feed on a CNC machine is
How fast the material moves into the cutting tool.
Machining centers
Cnc mills with automatic tool changers (atc)
Two main classes of machining centers
Vertical spindle
Horizontal spindle
Two common ATC types
Carousel type
Swing-arm type
Swing arm change tool faster than carousel type
True
Common cnc spindle type
CAT or BT flange
R8 used without ATC
