Aligning The Plane - Siemens SINUMERIK 828D Operating Manual

Setting up the machine
2.6 Measuring the workpiece zero
3 spigots
4 spigots
2.6.9

Aligning the plane

You can measure an inclined plane of a workpiece in space and determine rotation angles α
and β. By subsequently performing coordinate rotation, you can align the tool axis
perpendicular to the workpiece plane.
In order to determine the position of the plane in space, three different points are measured
along the tool axis. To align the tool axis in the perpendicular plane, you require a swiveling
table or swivel head.
In order to be able to measure the plane, the surface must be flat.
Prerequisite
You can insert any tool in the spindle for scratching when measuring the workpiece zero
manually.
An electronic workpiece probe is inserted in the spindle and activated when measuring the
workpiece zero automatically.
Procedure
84
The center point and the diameter of the circle on which the three
spigot center points lie are calculated and displayed. If you selected
entry "Yes" in "Coor. rotation", the angle α is additionally calculated
and displayed.
For "Set WO", the center point of the circle now corresponds to the
position setpoint. The calculated rotation is stored in the work offset.
The spigot center points are connected diagonally and the intersection
point of the two connecting lines calculated and displayed. If you
selected entry "Yes" in "Coor. rotation", the angle α is additionally
calculated and displayed.
For "Set WO", the intersection point now corresponds to the position
setpoint. The calculated rotation is stored in the work offset.
1. Select the "Machine" operating area and press the <JOG> key.
2. Press the "Workpiece zero" and "Align plane" softkeys.
The "Align plane" window opens.
Operating Manual, 06/2009, 6FC5398-7CP20-0BA0
HMI sl Milling