Fixed cycle B (Transverse turning cycle)

Q: What does Mazak G-code G294 do?

G294 — Fixed cycle B (Transverse turning cycle) on the MAZATROL SmoothX control (INTEGREX e-670H). Continuous straight facing operations can be initiated by the following instruction: Continuous bevel facing operations can be initiated by the following instruction: 1. In the single-block operation mode, the tool stops either at the ending points of operations 1, 2, 3 and 4, or only on completion of one cycle (depending on bit 7 of parameter F111). 2. Depending on the signs of X, Z and R, the following shapes are created. * The explanation below refers to incremental data input (under G91). An alarm (899 ILLEGAL TAPER LENGTH) occurs for shapes [2] and [3] unless the These functions permit various fixed cycles to be initiated by a single instruction with the The available types of compound fixed cycle for turning are as follows: G271 Longitudinal roughing cycle (leaving finishing allowance

Machine-specific. This G-code reference is specific to the Mazak INTEGREX e-670H / e-670H-S with the MAZATROL SmoothX control (EIA/ISO programming manual H747PB0030E). G-code availability depends on fitted options, and groups and behaviour differ between Mazak models and control generations — verify against the manual for your own machine before programming with any code.

What it does

Continuous straight facing operations can be initiated by the following instruction: Continuous bevel facing operations can be initiated by the following instruction: 1. In the single-block operation mode, the tool stops either at the ending points of operations 1, 2, 3 and 4, or only on completion of one cycle (depending on bit 7 of parameter F111). 2. Depending on the signs of X, Z and R, the following shapes are created. * The explanation below refers to incremental data input (under G91). An alarm (899 ILLEGAL TAPER LENGTH) occurs for shapes [2] and [3] unless the These functions permit various fixed cycles to be initiated by a single instruction with the The available types of compound fixed cycle for turning are as follows: G271 Longitudinal roughing cycle (leaving finishing allowance) G272 Transverse roughing cycle (leaving finishing allowance) G275 Transverse cut-off cycle Compound fixed cycles   If the finishing contour program has not been entered in the memory, any of the above functions for the compound fixed cycles  (G270 to G273) cannot be used. […]

G294 is modal (group 09) — it stays in effect until another code of the same group replaces it.

Programming format

G294 X_ Z_ F_
G294 X_ Z_ R_ F_

Address words

X-axis (R) : Rapid motion
R 1(R) (F) : Cutting feed
R : Taper depth (incremental

Notes & precautions

In order that it may function correctly, do not give a command of compound fixed cycle

Source

Mazak PROGRAMMING MANUAL for EIA/ISO PROGRAM, manual H747PB0030E, section 13-5-3 Transverse turning cycle: G294, p. 3-11, 13-48, 13-49, 13-50. Reference and explanation only — not a reproduction of the manual.

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