Siemens SINUMERIK 808D User Manual page 180

Se quence
To avoid unnecessary travel, the cycle calculates whether the row of holes is machined starting from the first hole or the last
hole from the actual position of the plane axes and the geometry of the row of holes. The drilling positions are then
approached one after the other at rapid traverse.
Explanation of the parameters
SPC A and SPCO (reference point on the first a xis of the plane and of the second axis of the plane)
One point along the straight line of the row of holes is defined as the reference point for determining the spacing between
the holes. The distance to the first hole FDIS is defined from this point.
STA1 (angle)
The straight line can be arranged in any position in the plane. It is specified both by the point defined by SPCA and SPCO
and by the angle contained by the straight line and the first axis of the workpiece coordinate system that is active when the
cycle is called. The angle is entered under STA1 in degrees.
FD IS and DBH (distance)
The distance of the first hole and the reference point defined under SPCA and SPCO is programmed with FDIS. The
parameter DBH contains the distance between any two holes.
N U M (number)
The NUM parameter is used to define the number of holes.
Programming example: Row of holes
Use this program to machine a row of holes consisting of five tapped holes arranged parallel to the Z axis of the ZX plane
and which have a distance of 20 mm one to another. The starting point of the row of holes is at Z20 and X30 whereby the
first hole has a distance of 10 mm from this point. The geometry of the row of holes is described by the cycle HOLES1. First,
Programming and Operating Manual (Milling)
180
6FC5398-4DP10-0BA6, 09/2017