Lenze ETC Motion Control - Manual (Page 113)

CNC programming
G functions
G functions individual descriptions
3
3.2
3.2.2
l
113 EDSTCXN EN 2.0
3.2.2.17 G33 Coupling between path and rotation axes "on"
With G33, the coupling is switched on between the path or an axis involved
in the path and a rotation axes.
G33 A B C L E or
G33 I J K
ABC Rotation axes, which should be corrected analog to the path. (Any value).
L Path length, which should be covered during a complete revolution of the
rotation axes.
E Speed pre−selection of the rotation axes in 1/min. The resulting path speed
is F=E*L.
I Thread pitch in X direction. Coupling between X and A axis is active.
J Thread pitch in Y direction. Coupling between Y and B axis is active.
K Thread pitch in Z direction. Coupling between Z and C axis is active.
G33 distinguishes between two variants using the programming.
The first variant is used to correct rotation axes to the feed on the distance
(e.g. sewing technology). In this case, one revolution of the rotation axes is
executed for each covered path. The cutting length is corrected for each
block such so that a whole number of revolutions of the rotation axes is
traveled.
The ramps and speeds on the path are corrected downwards if required such
that the rotation axes are not overtaxed. With the second variant, the
rotation axes is not corrected analog to the feed on the path, but to the feed
of an individual axis. This variant is used in particular for thread grinding.
The programmed gradient is stored in P685 and the gradient correction is
reset in P686. The total of P685 and P686 yields the effective thread pitch in
mm/revolution. The gradient correction can be effected online by changing
P686.
While the thread coupling is active, the involved rotation axes cannot be
positioned independently. The coupling has a modal effect and must be
switched off with G34. At the end of the program, the coupling of the first
variant is switched off automatically. Both variants cannot be active at the
same time. With the first variant,several rotation axes can be corrected
analog to the path if these are programmed together for G33.
G33 L5 A0 For each revolution of the A axis, 5 mm should be covered on the path.
G33 K1.5 The thread pitch should be 1.5 mm per revolution. Therefore, the C axis
should make one revolution per 1.5 mm feed of the Z axis.
Syntax
Meaning of the addresses
Explanation
Example