I was watching a video on You Tube comparing the Infinity Elite to the new Altmill CNC. The Altmill was faster due to the factory acceleration settings being higher. I checked my settings (Elite Foreman) and all the axes are set to 19.68510 Inch/sec^2. Does Onefinity recommend increasing this setting to speed up carves and if so, how fast?
Did you also see the bit breakage with the altmill? I’m not sure that’s something I’d want to aim for!
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One consideration is the increased accelerations may not be ideal for all materials, toolpaths, and machining parameters.
The Altmill broke two endmills as well plowing through material in one comparison test, so there may be trade-offs and machine limitations/characteristics that become part of the decision to modify accelerations.
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After watching it a couple of times, he said that the alt mill was having an issue with the spindle stopping mid-cut. That’s what broke the bits. If you notice, it finishes the cuts with the broken bit and the spindle is not turning. The acceleration should only affect the non-cutting travel. The cutting ipm should be whatever you have programmed in for that tool. He had them set up identically in the video with the exception of the acceleration speeds.
See my reply to TMToronto
I believe you will notice the spindle stopping after the bit breaking in both attempts, which he mentioned may have been due to his ‘aggressive’ settings.
I do understand your point about acceleration and non-cutting travel, but it is possible that the higher acceleration settings allowed the toolpath to be machined at the set feed rate, or close to it, which may have been too much, hence my comment about tradeoffs.
The lower acceleration on the Onefinity may have resulted in feed rates that were lower than intended, but perhaps more optimized for the material and toolpath settings. It is difficult to know unless the real-time feed rates are shown and compared.
Regardless, experimenting with acceleration settings and feed rates, and monitoring and analyzing the results , I believe are important parts of setting up a CNC.
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Looking at that video would not want a altmill. Seems unstable based on the video.
Honestly I think that is debatable. I wish the Onefinity had the stiffness of the Altmill and we could seriously mill aluminum. I would miss the Masso controller though.