10.4 Machining With Polar Kinematics; Overview - HEIDENHAIN TNC 620 User Manual

Special functions | Machining with polar kinematics

10.4 Machining with polar kinematics

Overview

In a polar kinematic model, the path contours of the working plane
are performed by one linear axis and one rotary axis instead of by
two linear principal axes. The working plane is defined by the linear
principal axis and the rotary axis while the working space is defined
by these two axes and the infeed axis.
On turning and grinding machines that have only two linear principal
axes, polar kinematics enable milling operations to be performed on
the front face.
On milling machines, various linear principal axes can be replaced
with suitable rotary axes. For example on large machines, polar
kinematics enable you to machine much larger surfaces than with
only the principal axes.
Refer to your machine manual.
Your machine must be configured by the machine tool
builder so that you can use polar kinematics.
A polar kinematic model consists of two linear axes and
one rotary axis. The programmable axes vary depending
on the machine.
The polar rotary axis must be installed onto the table side
so that it is opposite the selected linear axes and must
be configured as a modulo axis. Thus, the linear axes
must not be positioned between the rotary axis and the
table. The maximum range of traverse of the rotary axis
is limited by the software limit switches if necessary.
The principal axes X, Y, and Z as well as the possible
parallel axes U, V, and W can be used as radial axes or
infeed axes.
The control, combined with polar kinematics, provides the following
functions:
Soft key Function
POLARKIN AXES
POLARKIN OFF
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022
Meaning
Define and activate polar kinematics
Deactivate polar kinematics
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