Author Topic: Banggood Z-axis tested  (Read 2063 times)

Stonemull

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Re: Banggood Z-axis tested
« Reply #15 on: May 12, 2017, 10:59:22 AM »
Since I now have a modded mana se with a third axis driver fitted I thought I might have a bit more testing with this Z axis.
Also my PCB drill is a bit sloppy and lacks in Z motion range, plus I just have this sitting in a draw, so I will probably print up some mounts for this tomorrow (especially if I get my new 3D printer, decided to stay up all night to get into the shop early).
Main reason I did not use this initially was its weight, but if I am using it for drilling then I can see a reduced X and Y acceleration if required is fine.

So this is the same test gcode as I drilled with the PCB drill video posted earlier, Z0 is top, I went to Z40 for drilling and Z30 for retract.
I have not calibrated the driver current yet so it may yet perform better, this is full steps and I think 50 steps/mm seems correct, thread is 2mm.
Feedrate set at 2000 and accel 800.

http://www.youtube.com/watch?v=OJA6NIsGWak



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ggallant571

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Re: Banggood Z-axis tested
« Reply #16 on: May 12, 2017, 12:22:09 PM »
Sounds to me like you could divide the x/y speed by 10 for positioning the drill.
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Stonemull

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Re: Banggood Z-axis tested
« Reply #17 on: May 12, 2017, 12:57:48 PM »
I thought that initially but if it is not binding then once it has the mass moving there is no more effort on bearings than a movement with no weight, so allowing full speed but decreasing the acceleration I reckon is all that should be required. i reckon a few experiments will soon find out.

Its like accelerating a mass in space, a little tiny thruster will get up to huge speeds eventually, it simply cannot do it quickly.

If the extra mass makes it more difficult to move the axis (which it should not do theoretically but may do in practice) then you need more power to obtain a certain speed.

A3 Eleksmaker 2500mW
Solidoodle V2 Pro
Wanhao I3+ touch
Hacked Roland DXY-880
CNC3018 engraver
CNC Plasma (work in progress)