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| 17 Canned Cycles for Drilling | |
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To illustrate the foregoing, let us see the following example. | ||||
G81 | X_ Y_ Z_ R_ F | (the drilling cycle is executed) | ||
| X | (the drilling cycle is executed) | ||
| F_ | (the drilling cycle is not executed, F is | ||
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| M_ | (the drilling cycle is not executed, code M | ||
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| is executed) | ||
G4 | P_ | (the drilling cycle is not executed, the | ||
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| dwell will be | ||
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| value of cycle variable) | ||
| I_ Q_ | (the drilling cycle is not executed, the | ||
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| programmed values will not be recorded as | ||
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| cycle variables) | ||
–If a function as well as a drilling cycle are programmed in one block, the function will be executed at the end of the first operation, on completion of positioning. If L has also been programmed in the cycle, the function will be executed in the first round only.
–In
–The STOP button is ineffective to each of operations 5, 6 and 7 of cycles G74, G84. If STOP is depressed during those operations, the control will continue its functioning, and will not stop before the end of operation 7.
–The feed and the spindle override will always be 100% in each of operations 5, 6 and 7 of cycles G74, G84 regardless of the override switch setting.
–If G43, G44, G49 is programmed in a cycle interpolation, or if a new value of H is specified, the length compensation will be taken into account in operation 3, invariably along the drilling axis.
–Instructions G45, ... G48 will not be executed in the drilling cycle.
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