Rendered CNC Router

Hi!

This shows a rendering I made in Autotesk Inventer Pro 2008 of my home made CNC router. I'm currently working on the gantry and it's 90% done. The gantry is made of 15mm aluminium and pretty strong and rigid. The work area is 1000 x 800 x 200mm.

It will be driven by a 4 axis HobbyCNC kit with 305 oz/in steppers. X and Y ballscrews are 10mm/rev and Z is 5mm/rev. First I'm going to see how this kit is performing, but I made it upgradeable so that it will be easy to install some NEMA 34 steppers later on.

Feel free to post any comments :-)

Category:

Science & Technology

Tags:

• cnc
• hobby
• homemade
• homebuild
• home
• made
• build
• router
• stepper
• driver
• hobbycnc
• 305
• ballscrew
• ball
• screw
• autodesk
• inventor
• pro
• 2008
• dewalt
• 626
• mach3
• 3d
• rendering
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• automation
• animation
• mill
• milling
• axis
• nylon

[pufarinu]

very nice work ,

if you had used 1 motor instead 2 motors for x axis why hadn't be fine?

thanx in advance

[Nhyf]

@pufarinu

Hi Pufarino

I did have it in mind, but I decided to put on two motors to eliminate any raking problems in the future. You can certainly just use one motor, but if you want to make "agressive" cuts, then it's a good idea. It all depends on the width of the gantry, stifness on the axial bearings and how far they are apart and the cutting forces.

[Nhyf]

@pufarinu

I also thought about using a belt to connect the two lead screws, but then I had to make them longer and the design at that point didn´t really allow it. Another thing is that I can remove the whole table and mill stock that's higher than would normally fit underneath the table.

[CxC2007]

I dont know,

2 motors for the X axis???

They must be sinchronized.

You should need a special drive for that.

Une step that one motor looses, and you will be into troubles.

[Nhyf]

@CxC2007

The X-axis has a drive for each motor and they are connected to the same output on the BOB. It seems to work fine and everytime I start up the machine, I just push the gantry up against two manual stops at each end of the sides, to be sure that the gantry fully aligned. Of cause there can be missed steps, but so far I haven't been able to count them. Only one time I had a misalignment problem, but that was because of a loose wire connection.

[zee10101]

Hi Nhyf,

This seems like a very smooth design. I need to build something like this, and have talked to a machinist. I am an electrical engineer myself, so have no idea how the structure will be made or would work. The machinist guy needs cad drawings, if you have them and are willing to share, would it be possible for you email them to me, ata.ul.aziz@gmail.com.

[Nhyf]

@zee10101

Hi

I actually don't have any drawings, just the 3d parts which I put together to make this rendering. I have finished building my router, but I changed the design and used u-beams for the whole base.

I would advise you to consider what size router you want and what material it should be able to machine. If you know this, I might give you some idea where to start.

Brian

[adisharr]

Looks nice and solid - nice job :)