Re: 1/14 Grader Caterpillar 12F
 

Looking your build makes me want to have a CNC too.... Did you make your's yourself?

I really like it, very nice engineering, where do you work or what is your degree?

One thing, what scratches eye is that some of the rod ends are plastic but I hope you will change that in the future?

From where do you get these small screws?

Re: 1/14 Grader Caterpillar 12F
 

Wow! Unglaublich! (I hope the translation is correct for "unbelievable"). I absolutely enjoy gears and shafts - grew up with them before hydraulics became commonplace. You have been able to create the grader in miniature, not just a close model. Looking forward to more videos.

Ken

Re: 1/14 Grader Caterpillar 12F
 

@Madda,

yes you are right: it is a self made CNC-machine.

I am working as an mechanical engineer and 30 year ago I made an education as a precision mechanic, but today its only a hobby.

I am also not happy with the rod ends in plastic, but yet I did not found such in metal which fits…

All the screws I buy in germany at:

http://www.knupfer-grossbahn.de/


@Ken, yes the translation is correct, thank you…

Re: 1/14 Grader Caterpillar 12F
 

Could you put some pictures of that CNC? I'm really interested in CNC's and always want to see how somebody has built their's.

Re: 1/14 Grader Caterpillar 12F
 

... maybe this ???

http://www.rcrockcrawling.com/produc...roducts_id=263


Compliments,

the best build never seen !!!!!

:eek::eek::eek::eek:

Re: 1/14 Grader Caterpillar 12F
 

Amazing videos! It is an engineering masterpiece. To see this model function like the real thing is incredible. You are talented beyond human nature!

Re: 1/14 Grader Caterpillar 12F
 

Wow, that's some amazing work. I admire anyone that can do such work with their own workshop machinery.

Re: 1/14 Grader Caterpillar 12F
 

thank you again for your warm comments,

@gipicarto,
thank you for the link. I have looked in many german internet-shops and couldn't find a proper part. Perhaps I have to buy in US.

@Madda,
here some pics from my machine. It is not a big machine, because I wanted it more robust and only for the partsize I need. The workspace is X400 Y340 Z100. The milling-machine is a KRESS and it is very loud, therefore I am thinking about a HF-milling-machine.

http://farm8.staticflickr.com/7258/7...78201e27_b.jpg

http://farm8.staticflickr.com/7094/7...621228be_b.jpg

http://farm8.staticflickr.com/7072/7...2d249cea_b.jpg

Re: 1/14 Grader Caterpillar 12F
 

Thanks for the pics, I wonder, how precise is that machine?

Re: 1/14 Grader Caterpillar 12F
 

@Madda,
it is hard to give you an exact value for the precision, only one example: for the ball bearings I had to mill a hole with a diameter of 16mm. I used a two flute milling cutter with a diameter of 3mm and the result was a hole with dia 16mm +0,01 / -0,01 mm and it was perfect to press the ball bearing in it.

Re: 1/14 Grader Caterpillar 12F
 

That is a neat looking mill! All home made too. Wow. So you have what looks like a large Dremel moto-tool for your head and spindle. I've seen similiar set-ups like this used for engraving. Never really thought about using something like this for a little heavier work. That's neat. I would have guessed you had a little larger mill for the parts you made.

Re: 1/14 Grader Caterpillar 12F
 

Such an impressive and simple design with the mechanical linkages. I only wish I would have a store where I could walk up and look the gears and the motors up before buying, (and can run to whenever I need a parts). Buying over the internet is a little confusing (and the waiting just kills me) because even though you can see the parts and their dimensions, it is never like looking at it and taking what you like and need.
Great job sir, keep it up. This one is worth built of the year, or at least of the month.

Re: 1/14 Grader Caterpillar 12F
 

Hello,

the next step is done: I fixed the 2 servos to control the blade. In the control boxes there are 3 belt drives. I think, after watching the video you will understand how it works...

http://farm9.staticflickr.com/8011/7...75ab6f6e_b.jpg

http://farm6.staticflickr.com/5441/7...ee81a4dd_b.jpg

http://farm9.staticflickr.com/8018/7...f029c044_b.jpg

http://farm9.staticflickr.com/8148/7...832c3a64_b.jpg


http://www.youtube.com/watch?v=RIQGDqelDJg&feature=plcp

Re: 1/14 Grader Caterpillar 12F
 

That is really cool, thanks for posting the pictures and the video!

Reg

Re: 1/14 Grader Caterpillar 12F
 

I really like the mechanical setup. Nice work!

Re: 1/14 Grader Caterpillar 12F
 

Very nice work.

That would be a blast to operate.

Re: 1/14 Grader Caterpillar 12F
 

Wow. That's amazing! And it runs so smooth too. Are the servos that lift the blade standard 90 degree rotation servos? I'm curious how much down pressure they can produce, to keep the blade planted in the dirt. Your video is really something to watch! The mechanism that runs the blade function is so awesome.

Re: 1/14 Grader Caterpillar 12F
 

Hi

Thats so smoth looks amazing, very precise work, cannot wait to see progress being made on this project.

Thanks for posting.

Regards

Mark

Re: 1/14 Grader Caterpillar 12F
 

Re: 1/14 Grader Caterpillar 12F
 

Wow that video was awesome! Great work on it so far! Can't wait to see more