Siemens SINUMERIK 810D Programming Guide

9
08.97 Path Traversing Behavior
9.5 Feed characteristic
,
FNORM
,
FLIN
,
FCUB
,
FPO
9
840D
NCU 571
840D
NCU 572
NCU 573
840Di

Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
9-325
9.5 Feed characteristic, FNORM, FLIN, FCUB, FPO
Programming
F… FNORM
F… FLIN
F… FCUB
F=FPO(…,…,…)
Explanation
FNORM
Basic setting. The feed value is specified as a function of the traverse
path of the block and is then valid as a modal value.
FLIN
Path velocity profile linear:
The feed value is approached linearly via the traverse path from the
current value at the block beginning to the block end and is then valid as
a modal value.
FCUB
Path velocity profile cubic:
The non-modally programmed F values are connected by means of a
spline referred to the block end point. The spline begins and ends
tangentially with the previous and the following feedrate specification.
If the F address is missing from a block, the last F value to be
programmed is used.
F=FPO…
Polynomial path velocity profile:
The F address defines the feed characteristic via a polynomial from the
current value to the block end. The end value is valid thereafter as a
modal value.
Function
To permit flexible definition of the feed
characteristic, the feed programming according
to DIN 66205 has been extended by linear and
cubic characteristics. The cubic characteristics
can be programmed either directly or as
interpolating splines.
These additional characteristics make it possible to
program continuously smooth velocity characteristics
depending on the curvature of the workpiece to be
machined.

Siemens SINUMERIK 810D Specifications

General

Brand	Siemens
Model	SINUMERIK 810D
Category	Control Unit
Language	English