4
Creating a ShopTurn Program 08/2005
4.2 Bases
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♥ Siemens AG, 2005. All rights reserved
4-126 SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
4.2 Bases
4.2.1 Machining planes
Machining of a workpiece can be done on different planes. Two
coordinate axes define a machining plane. On turning machines with
X, Z, and C axes, three planes are available:
Turning
Front
Peripheral
The front and peripheral machining planes require that the CNC-ISO
functions "front surface machining" (Transmit) and "cylindrical
peripheral transformation" (Tracyl) be set up.
These functions are a software option.
For turning machines with an additional Y-axis, the machining planes
are expanded by two more planes:
Front Y
Peripheral Y
The front and peripheral planes are thus called Front C and
Peripheral C.
If the Y-axis is an oblique axis (i.e. the axis is not perpendicular to the
others), you can also select the "Front Y" and "Peripheral Y"
machining planes and program the traversing movements in Cartesian
coordinates. The controller then automatically transforms the
programmed traversing movements of the Cartesian coordinate
system into the traversing movements of the oblique axis.
For the transformation of the programmed traversing movements,
ShopTurn needs the CNC-ISO function "Oblique Axis" (Traang).
This function is a software option.
The machining plane selection is integrated into the parameter screen
forms of the individual drilling and milling cycles. For turning cycles
and for "axial drilling" and "axial threads", ShopTurn automatically
selects the Turning plane. For the "straight" and "circle" functions, you
must specify the machining plane separately.
The settings for the machining plane always act modally, i.e. until you
select another plane.
The machining planes are defined as follows:
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