I am in the process of evaluating the sizing software and have a
> question.
> I started with a very simple ball screw and some “manufactured
> parameters” to test out the application.
> The file as shown comes out correctly as far as peak torque is
> concerned (I calculated the values by hand), i.e., the results shows complete correlation to my hand calculated figures. However, this is with a trapezoidal curve and linear acceleration. When I alter the motion parameter section to use 100% S curve and hit submit, I noticed two things…
> 1. The listed acceleration on the motion screen does not
> change (this cannot be!)
> 2. The peak torque does not alter to suit in the final
> report- with 2X acceleration (100% S curve) it should be much higher.
>What am I doing wrong or do not understand?
Hi,
The listed parameters in the motion screen are either user inputs or they are derived from the user's input. The program does NOT override these parameters. The report also lists the user inputs in order to provide a reference what the user did.
In order to see the calculated torque you need to look at the motor requirements section of the report. The torque (individually for each motor) is also displayed in the Motor Selection screen.
Let me also add that the program has been tested and approved by companies like Parker, Siemens, GE Fanuc, Baldor, Schneider Electric, and many more, meaning the math is correct. The matter of how to include the S-Curve torque requirements depends more or less on personal references.
- Wilfried
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