2/22/2025 1:26 PM | |
Joined: 3/15/2015 Last visit: 3/17/2025 Posts: 15 Rating:
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I defined two CAM TABLE. 1.CAM TABLE master 0, slave 0 master 100, slave 50 2.CAM TABLE master 100, slave 50 master 300, slave 250 What I want to do is to combine speed between the 1st E-CAM and the 2nd E-CAM. In other words, the 1st E-CAM should be connected to the 2nd E-CAM from its final speed without slowing down to zero speed, and the two axes should continue at the same speed for 200mm. How can I achieve this?
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2/26/2025 4:33 PM | |
Joined: 1/4/2013 Last visit: 4/3/2025 Posts: 1170 Rating:
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Depends what's the interpolation law that you choose... If they are linear, then if I am not wrong the two speeds are identical (final of 1 and initial of 2) and you just have to launch the second cam immediately after the first... In that case there's no velocity discontinuity. In other applications you can have cam1 which ends with speed called "v1" and cam2 which starts with speed "v2". This means that you have to create a transition cam betwwen them which starts with v1 speed and ends with v2 speed, typically using a cubic trajectory. It's not's very difficult |
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2/27/2025 8:05 AM | |
Joined: 9/23/2005 Last visit: 4/10/2025 Posts: 4981 Rating:
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If they are linear the slope of the first one is 0.5, of the second one is 1.0 |
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2/27/2025 8:22 PM | |
Joined: 1/4/2013 Last visit: 4/3/2025 Posts: 1170 Rating:
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Yeah, I misread the 300 , I was using mobile. Can you also suggest him a decent transition cam ? |
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2/28/2025 7:59 AM | |
Joined: 9/23/2005 Last visit: 4/10/2025 Posts: 4981 Rating:
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There's no space for a transition. Also a question arises why both cams can't be joined into a single one? The originator should understand that instant jump in velocity is physically impossible. Therefor requirements must be rethink. On the other hand he could show the code he uses to switch the cams so we could review it. |
Regards, |
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3/9/2025 10:28 AM | |
Joined: 3/15/2015 Last visit: 3/17/2025 Posts: 15 Rating:
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Thanks for the answers. Actually, I had a hard time because I couldn't find a parameter for speed in the camtable. For example, there is no setting like "geovelocity" in the cam table. But there is in the "lcamhdi library".
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3/10/2025 3:11 PM | |
Joined: 1/4/2013 Last visit: 4/3/2025 Posts: 1170 Rating:
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Well, speed is given implicitly as (Y1-Y0)/(X1-X0) and considering if you are using a straight or a POLY3 slope. I have interpolated I think hundred of cams and Simotion still has a very simple way of doing that (in my opinion easier than TIA). If you post here your cams we can better help you. As Jacek observed, your two cams are already "continuous" in terms of speed, so we don't exactly understand what you need to do. |
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