(5) Tool change point: Most machining centers are specified in the Z axis zero point (Z0) of the machine tool. It is required to automatically return the spindle to the Z0 point with the preparation function command (G28) before the tool change.
(6) Tool change process: After the T×× command is received, the tool is automatically selected immediately, and the selected tool is in the tool change position. After receiving the M06 command, the robot moves, and on the other hand, the tool on the spindle is removed and sent back to the tool magazine. On the other hand, the tool at the tool change position is taken out to the spindle to realize the tool change.
(7) Tool change program preparation method
1) The spindle return reference point and the tool magazine selection knife are simultaneously performed. After the tool is selected, the tool change is performed.
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N02 G28 Z0 T02 Z axis return to zero, select T02 knife;
N03 M06 replaced with knife T02
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Disadvantages: When the tool selection time is greater than the zero return time, it is necessary to occupy the machine selection knife.
2) Select the knife before the Z axis returns to zero
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N10 G01 X_ Y_ Z_ F_ T02 Linear interpolation, select T02 knife
N11 G28 Z0 M06 Z axis return to zero, change the T02 knife
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N20 G01 Z_ F_ T03 Linear interpolation, select T03 knife
N30 G02 X_ Y_ I_ J_ F_ Circulating circular interpolation
3) Some machining centers (TH5632) tool change procedures are slightly different from the above
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N10 G01 X_ Y_ Z_ F_ T02 Linear interpolation, select T02 knife
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N30 G28 Z0 T03 M06 Z axis return to zero, change to T02 knife, select T03 knife
N40 G00 Z1
N50 G02 X_ Y_ I_ J_ F_ circular interpolation
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Note: For horizontal machining centers, the G28 Z0 of the above program should be G28 Y0.
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