Approach/Retraction - Siemens SINUMERIK 840D sl Operating Manual

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Working with a B axis (only 840D sl)

17.5 Approach/retraction

Axis sequence

Other additive transformations can be added to the offsets before (X0, Y0, Z0) or after (X1,

Y1, Z1) swiveling (see Section "Work offsets").

Approach/retraction

If you want to optimize approach/return for swiveling with the B axis, you can create a special

cycle that ignores the automatic approach/retraction strategy.

You can insert the approach/retraction cycle between any machining step program blocks, but

not within linked program blocks.

The starting point for the approach/retraction cycle is the safety clearance approached after

the last machining operation.

If you want to perform a tool change, you can move the tool through a total of three positions

(P1 to P3) to the tool change point and through a maximum of three additional positions (P4

to P6) to the next starting point.

The 1st, 3rd, 4th and 6th positions move the linear axes, while the 2nd and 5th positions move

the rotary axes.

Tool identifier

Retraction plane for face B

Positioning angle for machining surface

Reference point for rotation

● axis-by-axis: Swivel coordinate system axis-by-axis

● Solid angle: Swivel via solid angle

● Proj. angle: Swiveling via projection angle

● Direct: Position rotary axes directly

Sequence of the axes which are rotated around - (only for axis-by-axis swivel mode)

XYZ or XZY or YXZ or YZX or ZXY or ZYX

New zero point of rotated surface

The sequence of the axes can be inter‐

changed as required using the Select

Operating Manual, 05/2017, A5E40868721

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Sinumerik 828d