Cnc Machine

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Intro: Cnc Machine

Step 1: Drawing the Machine

I started by creating the design of the machine on SolidWorks.

On the PDF i put all the measurements.



Step 2: Start Construction

After seeing all the measurements, I calculated the amount of iron that I would need to build the machine. It was something like 16 meters of square tube.



So I bought two bars of six meters square tube 20*20*2, one bar of 6 meters square tube 25*25*2 and one bar of 6 meters angle iron 25*25*3.



Then I started cutting and drilling holes in all parts according to the technical drawing.

after that i started welding the parts.





Step 3: Motors and Drivers

i bought on ebay one kit of stepper motors with driver and power supply.

The steppers are Nema 23 Stepper Motor 287oz-in



Step 4: Final Product

Overall, the machine is good, just not fast enough because i use a m8 screw as lead screw. 

So the machine only can do 300 mm/m



Step 5: Some Stuff

stuff i made with the machine.

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    28 Discussions

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    speed_hack

    Reply 5 years ago on Introduction

    at low speed shouldn't have any problems, maybe you can run 150 mm per minute, but it's very slow

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    balascientistspeed_hack

    Reply 2 years ago

    Sir....i am india...engineering student...you project details sent my mail...
    Please
    My mail :-
    mynamebalakrishnan@gmail.com

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    nunotec

    3 years ago on Introduction

    Would you like to reduce the backlash?

    It is very Easy , i think :) www.dumpster.com is a link with antiback lash solutions and cheap

    Otherway you can DIY with a pieces of HDPE High Density Poly Ethilene ( Polietileno de alta densidade , ex tábua de cortar pão)

    In a shop of specialized plastic materials you can take it very very cheap!!

    My Email

    nunotec@hotmail.com

    13-anti-backlash-lead-nut.jpg14-ab-lead-nut-mounted.jpgimagesEE7QVCUV.jpg
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    nunotec

    3 years ago on Introduction

    VERY VERY GOOD PROJECT I WOULD LIKE TO BUILD IT

    IT SEEM YOU ARE PORTUGUESE , I AM TOO, I AM FROM OPORTO

    BEST REGARDS

    NUNO

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    R-A

    5 years ago on Introduction

    This looks awesome!

    I'm quite curious, what kind of accuracy / precision do you get?
    and what depth can it cut?

    1 reply
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    speed_hackR-A

    Reply 4 years ago on Introduction

    It has a good precision, but have a little bit backslash. The depth of the cut depends of the bits, but i think 70mm it`s the max.

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    speed_hack

    Reply 5 years ago on Introduction

    for design i use adobe illustrator or solid works. For the gcode i use Mastercam or Cambam

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    speed_hack

    Reply 5 years ago on Introduction

    i used m8 screws as a lead screw i think is 1.5 mm/revolution or something close. X axis have +/- 800mm Y axis have 1000mm and the Z axis have +/- 250mm or 300mm i don't remember.

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    speed_hack

    Reply 5 years ago on Introduction

    here in the end of the page
    http://www.wantmotor.com/ProductsView.asp?id=160&pid=75&sid=80
    you have the graphics of the motors, here you can compare the better speed/torque racio

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    speed_hack

    Reply 5 years ago on Introduction

    i bought the same as option 1. my opinion is that the first option is the one that has the strongest motors. The drivers are the same on both options. the secund have couplers .. hmm i dont know. i think the motors are the more important thing.

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    speed_hack

    Reply 5 years ago on Introduction

    my motors came with mach3, the same i send to you. i dont know other software. for that you have foruns like cnczone, they talk about this things

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    speed_hack

    Reply 5 years ago on Introduction

    hello, it's the same i bought, the only problem of this motors at high speed they lose a lot of torque.
    if you go to they website you can see the graphics i think is wantmotor or something like that.

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    speed_hack

    Reply 5 years ago on Introduction

    it's just a ordinary router, only costs me about 30€

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    speed_hack

    Reply 5 years ago on Introduction

    the lead screw i used is a m8 screw with 1 meter and a nut is m8 m8 = 8mm
    and my spindle isn't connected to the board.

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    speed_hack

    Reply 5 years ago on Introduction

    the bearing is a skate board bearing 22mmx7mm inside hole is 8mm

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    speed_hack

    Reply 5 years ago on Introduction

    try this : https://docs.google.com/folder/d/0BzIRbajTFEHEWnpFdUl5QWlyYkk/edit