CYCLE BORE7(211) - G87 drilling cycle
Kept for compatibility. CYCLE is retained only for compatibility with older postprocessors. Current versions of the CAM system generate the extended cycle command EXTCYCLE instead: it offers more capabilities and lets the CAM system fully simulate all of the cycle's nested motions, which CYCLE does not. Output of CYCLE can still be turned on in the CAM system settings, but this is not recommended.
G87 boring canned cycle performs rapid approach to the safe level, work feedrate boring with spindle stop on hole depth level and manual retract to the safe plane level.
G87 cycle includes:
- Rapid approach to the Z safe level.
- Work feedrate travel to the Z min level.
- Spindle stop. If oriented spindle stop is enabled (CLD [14] parameter), it is positioning the spindle in a given angular position and then tool shifts to specified small value of the X, Y and Z coordinates.
- Manual retract to the Safe plane level.
- Restore spindle rotation direction and speed.
Command
CYCLE BORE7(211), A a, MMPM(315), N nm, F f, P p, T t
or
CYCLE BORE7(211), A a, MMPR(316), M nm, F f, P p, T t
Parameters
| Parameter | CLD array | CLD name | Description |
|---|---|---|---|
| BORE7(211) | CLD[1] | CLD.Type | Cycle type 211 (BORE7). |
| a | CLD[2] | CLD.A | Hole depth in current measure units (mm or inches). |
| MMPM(315) MMPR(316) |
CLD[3] | CLD.MMPM | Feedrate measure units: 315 (MMPM) – mm per minute (inches per minute), 316 (MMPR) – mm per revolution (inches per revolution). |
| nm | CLD[4] | CLD.NM | Work feedrate value. |
| f | CLD[5] | CLD.F | Safe level. |
| CLD[6] | The value of tool shift for the X coordinate after oriented spindle stop at the bottom of the hole. | ||
| CLD[7] | The value of tool shift for the Y coordinate after oriented spindle stop at the bottom of the hole. | ||
| p | CLD[8] | CLD.P | Safe plane level. |
| CLD[9] CLD[10] |
Reserved. | ||
| t | CLD[11] | CLD.Top | Hole top level. |
| CLD[12] | The value of tool shift for the Z coordinate after oriented spindle stop at the bottom of the hole. | ||
| CLD[13] | The angular position of the spindle when stopping at the bottom of the hole (degrees) | ||
| CLD[14] | The state of the oriented spindle stop at the bottom of the hole: 0 - off, 1 - enabled. |
Access from .NET
Delivered through the OnCycle handler (dispatch on the cycle type in cmd/cld[1]):
public override void OnCycle(ICLDCycleCommand cmd, CLDArray cld)
See Hole machining cycles (CYCLE) for the common .NET model.