CYCLE TAP(168) - G84 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.
G84 tapping canned cycle performs rapid approach to safe level, taps the thread on the feedrate retract with reverse spindle rotation.
G84 Cycle consist of:
- Rapid approach to Z safe level.
- Work feed rate travel to Z min level.
- Spindle rotation stop.
- Reverse spindle rotation and work feed rate return to Z safe level.
- Spindle rotation stop.
- Restore normal spindle rotation and rapid retract to Safe plane level.
Command
CYCLE TAP(168), A a, MMPM(315), N nm, F f,
P p, T t, S s, PS ps, SC sc, FR fr
or
CYCLE TAP(168), A a, MMPR(316), M nm, F f,
P p, T t, S s, PS ps, SC sc, FR fr
Parameters
| Parameter | CLD array | CLD name | Description |
|---|---|---|---|
| TAP(168) | CLD[1] | CLD.Type | Cycle type 168 (TAP). |
| 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 | Feedrate value |
| f | CLD[5] | CLD.F | Z safe level |
| L | CLD[6] | CLD.L | Cut in value Zl |
| i | CLD[7] | CLD.I | Withdrawal value Zi |
| p | CLD[8] | CLD.P | Safe plane level |
| DWELL(279) | CLD[9] | CLD.DWell | Dwell time keyword. |
| h | CLD[10] | CLD.H | Dwell time in seconds. |
| t | CLD[11] | CLD.Top | Hole top level |
| s | CLD[12] | CLD.Step | Threading pitch |
| ps | CLD[13] | CLD.Pos | Spindle start angle |
| sc | CLD[14] | CLD.Socket | Socket type: 0 – floating, 1 – fixed |
| fr | CLD[15] | CLD.FR | Return feedrate |
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.