8-39
8
Cycles
TNC 426/TNC 425/TNC 415 B/TNC 407
Fig. 8.43:
The unrolled surface of the cylinder:
L = Diameter of cylinder * 3.14
Fig. 8.42:
Contour on a cylindrical surface
L
CYLINDER SURFACE G127
The machine tool and the TNC must have been prepared by the machine manufacturer for the use of Cycle G127.
Process
This cycle enables you to program a contour in two
dimensions and then roll it onto a cylindrical sur-
face for 3D machining.
The contour is described in a subprogram identified
in Cycle G37 (CONTOUR GEOM.).
The subprogram contains coordinates in a rotary
axis and in its parallel axis. The rotary axis C, for
example, has Z as its parallel axis. The path
functions G01, G02/G03 with R, G25 are available
for programming.
The dimensions in the rotary axis can be entered
as desired either in degrees or in mm (inch). You
can select the desired dimension type in the cycle
definition.
G127 CYLINDER SURFACE should not be used for closed contours. With closed contours, the starting point and
end point of the contour must not be located in a contour corner.
