Linear Or Circular Path Motions; Straight - Siemens SINUMERIK 840D Operation/Programming Manual

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10.04
3.6

Linear or circular path motions

3.6.1 Straight

Radius compensation
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition

3.6 Linear or circular path motions

This function is intended for the implementation of very simple
machining operations as path movements.
More complex operations such as contours with chamfers, radii,
approach strategies, tangential transitions, etc. should be
implemented using the "Mill contour" and "Path milling" functions.
You must program a tool before you program simple lines or circles. A
tool with spindle speed is selected by means of softkeys "Straight
circle" and "Tool".
You can only program rapid traverse for linear travel motions.
The tool moves at the programmed feedrate or in rapid traverse from
its current position to the programmed end position.
Alternately you can implement the straight line with radius
compensation. The radius compensation acts modally, which means
you must deactivate the radius compensation again if you want to
traverse without radius compensation. Where several straight line
blocks with radius compensation are programmed sequentially, you
may select radius compensation only in the first program block.
When executing the first path motion with radius compensation, the
tool traverses without compensation at the start point and with
compensation at the end point. This means that if a vertical path is
programmed, the tool traverses an oblique path. The compensation is
not applied over the entire traversing path until the second
programmed path motion with radius compensation is executed. The
reverse occurs when radius compensation is deactivated.
programmed
path
travel path
First path motion with
radius compensation
Programming with ShopMill
programmed
path
travel path
First path motion with deselected radius
compensation
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