As some of yall might have seen in my other post, I run a machine and welding metal fabrication shop. Well I knew inevitably I would design my own router using the equipment I have.
First I want to thank Ryan for his awesome and very capable machines, he has brought cnc routers(and etc) to the masses where you hardly even need any tools to build.…[Read more]
Oh yeah what was I thinking.
Ok backup a bit
200/1.257 = 159.11 steps per inch
1 step divided by 159.11 inches = .00628 inches per step.
which is .1595 mm per step
Im looking for steps per mm so- 1/.1595 = 6.27 steps per mm
6.27 x 16x microstepping = 100.32 steps per mm
Yeah, current steps/actual distance=x steps/desired distance i…[Read more]
1.5 x pi = 4.712 inches per revolution on the pinion
I have a 3.75 reduction with the 16 teeth to 60 teeth.
4.712/3.75 = 1.257 ” per motor revolution
200/1.257 = 159.11 steps per inch
159.11 x 16 microstepping = 2545.76 steps per inch.
64,662.3 mm …oh dear what did I do wrong
Need some help with some math. Not your normal situation going on over here.
Ok, I got GT2 belt, 16 tooth pulley going to a 60 tooth pulley that is connected to a 16 pitch (24 tooth, 1.5 inch pitch diameter) spur gear on a rack and pinion setup. 1/16 stepping, 1.8 degree motor.
Bout to try and do the math…wish me luck
Insulation sheathing like in the link.
You have to make sure the machine is square, you will find that the x and y tubes can rock back and forth unsquare when the motors are not engaged.
First thing you should always do it make sure they are square by measuring down the x and y tube to make sure they are the same length from the their respective side tube.
Then engage the motors…[Read more]
95% of the way done. The Nema 17 for the Z is just barely not strong enough to hold the head up always, it slips every once in a while, so I got a Nema 23 coming for it.
Im getting 200 inches per minute on the x and 150 for the y, not bad at all. Had a video of it rapiding around but dont know what happened to it.
This video is what we will…[Read more]
What kind of plywood are you cutting? Ive been cutting alot of 1/4 birch, which really measure around 5mm. I cut all the way through into a foam spoilboard at 15mm/s. Ive had the most sucess…[Read more]
I dont need this machine to be super accurate, I pretty much just need it to move. The only reason I am using the gearbox is because with it mounted with the pinion for the rack it takes just making a simple motor bracket to mount the stepper and move, otherwise I would be making a lot more brackets to get this thing to move.
So I got the…[Read more]
Hey Josh, I live in Griffin.
Ive built both recently, a 30 x 30 cutting area MPCNC and then a 48 x 96 Low rider.
Both are awesome designs and machines, especially for the price.
The MPCNC is more accurate but the Low Rider wins for me because I can throw a whole sheet up on it and cut and cut and cut.
There is more support and videos for the…[Read more]
Designed a desktop arcade box with my low rider out of 1/2 birch. Came out pretty good, need Estlcam to overcut a little more in the corners to get stuff to fit better but it all went together and glued up good.
Reused a 24 inch monitor I had so its pretty huge, of well.
So I decided to go with a 269 oz Nema 23 with a super simple arduino nano and tb6560 driver setup. I only bought one for now to test and it is a success. The reducer has it going slow but it is fast enough for my needs. It goes a little bit faster than in the video, I jumped up the rpms after taking it. Put it on the Y side and it worked too,…[Read more]
I think you are right, going straight to nema23s.
What about this one?
Its supposedly a low current stepper that works with a drv8825.
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