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Messages - killersoundz

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General Mach Discussion / Re: Rounded corners still problematic after switch to exact stop over 89 degrees
« on: February 03, 2018, 01:11:24 AM »
Quote from: joeaverage on February 03, 2018, 12:34:37 AM
Hi,

Quote
It seemed fine the last program I ran but since then I did reduce my acceleration on my x axis but I also don't feel like that's relevant, otherwise feeds and speeds are the same.

The ability of a CNC machine to follow a trajectory is critically dependent on it axes acceleration. The higher the acceleration the better a machine can follow a path.
You need to have as high an acceleration in your settings as you can consistent with not losing steps and having sufficient reserve to accelerate the mass of the table
and workpiece.

Craig

I understand, but if it was running in exact stop mode like it should be given the setting then the acceleration should be irrelevant in this case

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General Mach Discussion / Rounded corners still problematic after switch to exact stop over 89 degrees
« on: February 02, 2018, 10:47:53 PM »
Hi guys I have a bunch of orders to fulfill and I thought I had this issue ironed out by telling mach3 to switch to exact stop mode on angles above 89 degrees but on random corners it still seems to try to run them in constant velocity mode.

It seemed fine the last program I ran but since then I did reduce my acceleration on my x axis but I also don't feel like that's relevant, otherwise feeds and speeds are the same.

It's not a gcode issue, i'm using vectric aspire and the rounded corners aren't consistent from vector start points or anything it really just seems random.

I can't afford to make anymore scraps, if anyone can tell me some settings to look for or change it would be highly appreciated.

Since these programs are just squares and rectangles you think I should just switch to exact stop mode for these? My only concern then is when I do run a program with other shapes or engraving and I know that stuff runs terrible in exact stop mode so I'd like to figure it out while leaving it in constant velocity if possible.

random rounded corner


good corner





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