SIEMENS
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Siemens PM 21 · 2017
SIMOTION Motion Control System
SIMOTION engineering software
SIMOTION SCOUT
> Creation of cams (basic)
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Overview
A cam generally specifies the motion relationship between a
leading axis (master axis) and a following axis (slave axis).
Cams can also mirror velocity profiles, pressure characteristics
or valve characteristic compensation for hydraulic axes. The
cam technology object can process cams which are defined as
interpolation point tables or polynomial descriptions.
The basic scope of SCOUT contains editors to create simple
cams in the form of text in a table or using polynomials (VDI
assistant) in the form of graphics symbols with configuration
support.
Creation of cams
When the technological object "Cam" is generated, the type
"Interpolation point table" or "Polynomial" is defined.
•
Interpolation point table:
With this type, the master and slave positions are entered in a
two-column table. It is also possible to use external
interpolation point tables (ASCII file, Excel table).
• Polynomials:
Polynomials describe motion laws in accordance with
VDI 2143. SIMOTION supports polynomials up to the 6th
degree. In polynomial mode, the cam is described by a
number of consecutive polynomials. Polynomials are entered
in the form of a polynomial table. Users can use a polynomial
description dialog and/or VDI assistant.
The result of the input is displayed in the right-hand side of the
window in the form of a curve in the coordinate system.
In addition, other parameters such as the interpolation type
between the curve support points or the scale of the cam can be
specified. The SIMOTION CamTool option package can be used
to display and optimize cams graphically.
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Benefits
•
Editors for simple cams are included in the basic scope of
functions of SCOUT
•
Graphic visualization of the cam so that input errors can be
quickly identified
•
Representation as interpolation point table with options to
transfer data from external sources (ASCII, Excel)
•
Alternative: Representation by polynomials up to the 6th
degree with inputs supported by polynomial description
dialog and VDI wizard
© Siemens AG 2017