cnc machine

cnc machine 

stuffydo.wordpress.com/

Step 1: Drawing the machine

I started by creating the design of the machine on SolidWorks.
On the PDF i put all the measurements.

Comments

[speed_hack]

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

[speed_hack]

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.

[speed_hack]

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

[speed_hack]

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

[speed_hack]

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.

[kapriece]

how hard was it to tweak the software?

[speed_hack]

a little bit, i still have some problems with backlash but isn't a big deal

[RTegelbeckers]

You can compensate for backlash in Mach 3. It works really well.

[speed_hack]

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

[speed_hack]

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.

[speed_hack]

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

[speed_hack]

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.

[speed_hack]

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

[speed_hack]

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

[e.ma.niak]

Im new at this, so before i start i want to know: How did u calibrated the CNC? (how does it know how big is 1cm...) And is there a difference between USB and Paralel control, i mean does the same software operate with both?

[Atman8]

What do you think about the performance of the motors? I'm trying to decide what size to buy.

[Brittond14]

Good job brother. How heavy is your machine?

[speed_hack]

thanks bro. maybe 30 or 40 kg

[speed_hack]

Yes please, some tips are always welcome. My problem with these motors is that the faster they go more torque they loses.
This motors are rated 8volts 1Amp
sorry my english, some times i have to use google translate :P

[speed_hack]

For the motor couplers i'm using a piece of rubber pipe tied with zip ties.
and the motor driver is a TB6550

[pfred2]

Yay rubber hose FTW! If you'd like I could tell you how to tune your motor drivers up to get them to run better. I know about TB6560AHQ motor driver ICs because I made my own drivers with them. That made me to learn all about the things.

[sleeping]

Can you show a picture of the motor couplers. What type of motor drivers are you using. Thanks