My Homemade CNC milling machine

Work area: 460x410x70 [mm]
X,Y,Z: stepper motor 2.1Nm
x,y,z: square screw - 10mm /rev.
Linear rail with double sided ball bearing rollers
Aluminium and steel structure
Spindle: 0.7kW, 0-25000RPM with 0-400Hz Inverter

Category:

Science & Technology

Tags:

• cnc
• milling
• homemade

[webzy123]

Im about to start building my own and i cant decide what size motors to use. Do you think 1.2Nm bipolar stepper motors would be enough for the X and Y axis? they will be running on linear rails with up to 4 linear ball bearings on each axis.

Thanks

[kovendre]

@webzy123 The motor must be a little bit oversized if u want to reach high speeds/ accelerations. And motor size depends for what you want to use, for what load, it must be calculated. For eg. i use 2,1Nm unipolar sanyo denki motors on this machine and the 1,2Nm bipolar torque is almost equal with 2,1Nm unipolar torque.

[douro20]

Spindle looks like an old grinder spindle.

[kovendre]

@douro20 Actually is an old, german 33000 RPM Georgii Kobold August Heine miller spindle

[koncertLive]

@mtnviper1963 <---- open source sniper!!!!! POOR BABY

[koncertLive]

@shortyjk95 that is actually really easy, but one would have to know what type of system you are building. If you buy your electronics from Brent @ Hubbard CNC INC in Sacramento, Ca he includes a schematic if you ask. Im not affiliated with him but I buy from him. (916) 368-2815.. He has great prices and is a really nice guy. Tell him Ron from Fambooking sent you please...

[koncertLive]

@webzy123 As long as your not trying to move a massive 4 foot solid steel gantry the 425oz nema 23, 8 wire, 200 step, bipolar is exactly what I will be using. The real question you should focus on is your driver.. Power Step PSD5042-2P is the only thing I will use. You need 1 driver for every motor and a breakout board for every 6 drivers. Costs is increased but after you spend some time looking at the others this is really the best way.

[PleaseLookAwayNow]

What, no money shot at the end? I find this difficult to masturbate to!

[shortyjk95]

plz plz plz make a video showing how to wire it to a computer bcuz i know how to make it but i am still trying to figure out how to wire the homemade cnc machine to a computer

thanks

[mtnviper1963]

Of course, it depends on what you define as "good money". Some guys are satisfied with "buying" themselves a job but others actually prefer to be profitable. I do give credit to the guys, that put these little machines together, for their innovative thinking that went into the whole project.

[Psychlist1972]

@mtnviper1963 Step out of your shop and take a look around. Plenty of people make good money using machines like that. They don't all have to be capable of hogging aluminum or cutting tool steel. Sheesh.

[mtnviper1963]

projects like this are for people that have more time than money. Furthermore, they are just toys...meaning that you can not expect to do anything accurate or with any speed. If you are serious about making money with a cnc mill, do yourself a favor and pick up a nice used machine that is actually a real CNC mill that you can do something worthwhile with.