W1-W3: Code Word Meanings Flashcards
S#
Spindle speed [RPM]
F#
Feed rate [IPM]
T#
Tool number
M03
Clockwise spindle rotation
M04
Counterclockwise spindle rotation
M05
Stop Spindle
M06
Tool Change
M08
Coolant On
M09
Coolant Off
What does T# do ?
prepares the tool in that tool number
What M code do we use to perform a tool change ?
M06
What does the command S350 M03 do ?
Set spindle to 350 RPM
Rotate clockwise
What M code do we use to stop the spindle ?
M05
What does an F word command ?
Feed rate [IPM]
How do we measure feed rate in imperial ?
inches per minute [IPM]
How do we measure feed rate in metric ?
Millimetres per minute [MMPM]
What is the axis and polarity for the tool moving away from the operator
Y positive axis
What is the axis and polarity for the tool moving to the left ?
X negative axis
What is the axis and polarity for the tool moving down ?
Z negative axis
What is the axis and polarity for the table moving left ?
X positive
What are the two main type of machining centres ?
Vertical and horizontal
True or false : Only negative coordinates need a negative before the number
True
What’s the proper notation for writing coordinates for positive and negative X,y,z coordinates
X1.0
Y2.0
Z2.0
X-1.0
Y-2.0
Z-3.0
True or false: writing coordinates you do not need decimals
False : you need to include decimal writing coordinates in CNC code
What’s special about G54 to G59 ?
They store the program zero coordinates
Where should you place the program zero , anywhere of your choice ?
No, program zero should be carefully selected at the point where most dimensions are referenced from.
True or false: Return zero and Program zero are the same thing.
False
What is program zero ?
The zero reference point you create using the edge finder.
What tool do you use to determine a program zero ?
Edge finder
Explain the process in creating a program zero
Use an edge finder for the a corner
Set the program zero for each x,y coordinate
How do you manually move the x,y,z of the machine tool ?
Using the handle jog and handle jog increment values
Where should the program zero be for round objects ?
At the centre
Where should your program zero be for the z coordinate ?
At the top surface of the work piece
What is G90 ?
Turns on absolute mode for G54 to G59 program zeros
What is G91
Incremental mode
Each command In a command line are called …
Words
What is N - code
Command line identification number
What are model words
Are commands that stay on until canceled or changed
What is G00 ?
Rapid to x,y,z coordinate
What is G01
Command to move in one of the coordinate axis x or y or z
G20
G21
Inch mode
mm mode
What is G43 ?
Used to read H# which is a tool length
What is H# ?
Stores the a tool length value
How do you add comments to your code and where should they be placed ?
In brackets
Under the program O - number
How many G code can you add in one command line ?
Only 3
What should you do if you have more than 3 G code in a row on the same command line ?
Move the others to the next command line
