Many of the instructions that are often used in machining centers are the same as CNC machines, and are not mentioned here. Only some of the instructions that reflect the characteristics of the machining center are described below:
1. Stop the calibration instruction G09 accurately
Instruction format: G09;
The tool is decelerated and precisely positioned before reaching the end point before proceeding to the next block, which can be used for part machining with sharp edges and corners.
2. Tool offset setting command G10
Instruction format: G10P_R_;
P: instruction offset number; R: offset
The tool offset can be set by program settings.
3. Single direction positioning command G60
Instruction format: G60 X_Y_Z_;
X, Y, and Z are the coordinates of the end point that need to be accurately positioned.
For hole machining that requires precise positioning, this command can be used to position the machine in one direction, thus eliminating the machining error caused by the backlash. The positioning direction and overshoot are set by parameters.
4. Precise stop check mode command G61
Instruction format: G61;
This command is a modal command. In the G61 mode, it corresponds to each segment of the program containing the G09 command.
5. Continuous cutting mode command G64
Instruction format: G64;
This command is a modal command, which is also the default state of the machine. The tool will continue to execute the next block after it has moved to the end of the command without affecting the positioning or verification in G00, G60, G09. When the G61 mode is cancelled. To use G64.
6. Automatically return to reference point command G27, G28, G29
(1) Return to the reference point check instruction G27
Instruction format: G27;
X, Y, and Z are the coordinate values ​​of the reference point in the workpiece coordinate system, and it can be checked whether the tool can be positioned to the reference point.
Under this command, the commanded axis returns to the reference point with rapid movement, automatically decelerates and performs position verification at the specified coordinate value. If the position is referenced to the reference point, the axis reference point signal light is on; if not, the program checks again. .
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