| [BG-EDIT] |
A soft key on the Fanuc 0-C mill control that enables background editing. |
| [GRAPH] |
A soft key that activates the graphics display. |
| AUX/GRAPH |
A function key located on the MDI keypad that displays the graphics parameter screen and a soft key link to the graphics display. |
| auxiliary function lock |
A CNC mill feature that disables M, S, and T codes for the purpose of checking a part program. |
| background editing |
A feature of the Fanuc 0-C mill control that allows an operator to edit a program in memory while another program is being run. |
| CAD/CAM |
Computer-aided design/computer-aided manufacturing. CAD/CAM is the use of software to aid in the design and manufacturing of a part. |
| CYCLE STOP |
The control button used to pause a program. Also known as feed hold, cycle stop pauses tool feed but does not stop spindle movement. |
| DISTANCE TO GO |
The distance the tool has yet to move in the current program block. |
| dry run |
A trial run of the part program without any parts or cutting fluid. |
| dry running |
A prove-out method that executes a part program without any parts or cutting fluid. |
| EMERGENCY STOP |
Used for emergencies only, the EMERGENCY STOP button immediately shuts down all machine functions. |
| FEED HOLD |
The control button used to pause a program. Also known as cycle stop, feed hold pauses tool feed but does not stop spindle movement. |
| feed rate override |
A control that adjusts the programmed feed rate by a designated percentage during operation. |
| first part run |
The first successful execution of a part program that produces the first good part. |
| foreground editing |
The normal process of editing a part program that is the active program on the Fanuc 0-C mill control. |
| graphics display |
A function of the Fanuc control that allows an operator to visually dry run a part program without moving the axes and risking tool damage. This prove-out method is accessed by pressing the AUX/GRAPH key. |
| illegal character |
A part programming character that does not conform to the syntax, or programming format, of a CNC control. The control is not able to read or execute an illegal character. |
| legitimate character |
A part program character that conforms to the syntax, or programming format, of a CNC control. |
| logical error |
A part program mistake that occurs when an unintended legitimate character or value appears in a part program in place of the intended character or value. |
| M code |
A code used to signal an action from a miscellaneous group of commands. M codes change cutting tools, turn on or turn off the coolant, spindle, or workpiece clamps, etc. |
| machine lock |
A CNC mill feature that displays the change in tool position on the position display without moving the tool. Machine lock is a basic way to check a part program for errors. |
| program error |
A part program mistake that either disrupts the machining process or renders a part program useless. |
| proving out |
Performing a series of steps to verify the accuracy of a part program. Operators use graphic displays, dry runs, and single blocking to check a program for errors. |
| rapid traverse override |
A control that adjusts the rate of rapid traverse by a designated percentage during operation. |
| S code |
A program code that determines the speed during a cutting operation. |
| setup |
Time that is spent setting up the fixtures and tooling, calculating tool offsets, and performing all the necessary tasks to produce the first accurate part. |
| SINGL BLOCK |
A key that activates the single block feature for the mill. The single block function runs the program one block at a time to prove out the program. |
| single blocking |
A prove-out method that executes a part program one block at a time at reduced feeds. |
| syntax |
The programming format of a CNC control. |
| syntax error |
A part program mistake that occurs when an illegal character appears in a program. |
| T code |
A program code used to indicate the specific tool for a tool change. |
| tolerance |
An unwanted but acceptable deviation from a given dimension. Tolerances indicate the allowable difference between a physical feature and its intended design. |
| word |
Any area of a part program consisting of the pairing of an address letter and a numerical value. |
| work harden |
To increase the hardness of a workpiece exterior due to temperature and pressure at the point of contact. |