6.2 Essential Control Functions-Basic Lathe Operations

When you press FEED HOLD:

All axis motion stops, but the spindle keeps turning

Why is the amount of rotational energy released in a lathe crash usually much higher than in a mill crash?

Because the larger workpiece is spinning in the lathe, and just the tool is spinning in the mill

The most important thing to remember when indexing the turret:

First move the turret away from any obstructions before making a rotation

The quickest way to stop the machine in an emergency is to:

Hit the E-STOP button

When a CNC turning center has a crash:

It will usually cause significantly more damage and be more dangerous than a mill crash

If you need to stop the machine in the middle of a cut, and the machine isn't in immediate danger of a crash:

It's better to press FEED HOLD instead of EMERGENCY STOP

The Jog Handle can be used to:

Move each of the machine axes individually

When you press FEED HOLD the program:

Pauses on the current line of code and doesn't reset to the beginning of the program

How do you turn the coolant on and off manually?

Press the COOLANT key

The X-DIAMETER MEASURE button is pushed to:

Record the position of the tool tip while setting a tool offset

The Z-FACE MEASURE button is used for:

Setting the work offset position for your material

When you push Emergency Stop, what happens?

The machine stops moving and the spindle stops rotating, as quickly as possible

If you manually turned off the flood coolant for any reason, you must always remember:

To turn the coolant back on before the current tool begins cutting again

If you're going to work on or inside the machine, you should press E-STOP first.

True

The M08 and M09 commands are used to:

Turn the flood coolant system on and off from within the program

You should be ready to push E-Stop anytime:

You think the machine is going to crash