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Hi All

I have the following problem. I have two rotary encoders, each rotated by a stepper motor. The two stepper motors receive impulses from the same source, therefore they must rotate the same...

Well I decided to go with extrudes filled with epoxygranite. also the structure is quite massive even though made of aluminum.
I also reconsidered a bit the kinds of materials I'm going to work with...

It's active. I'm not sure if I've said this already, but I decided to upgrade my current router, rather than to build a new one. The project is ongoing and if you're interested I'm going to post...

Hi guys, sorry I couldn't write earlier, but I was out of town for most of the weekend.

Anyway let me answer your questions and comment on your suggestions:



Yes that's a reasonable...

Hi wizard and mactac54

Yesterday I tried cutting with my chuck thoroughly cleaned, and I can say things are much improved. With a single end mill the machine was able to finish the last plate...

Hi wizard

Thanks for your detailed response. Thanks to you I was able to discover an unexpected problem that might be the cause... But let me first answer your questions.



It's most...

Well yes, I had to think of that :) I'm going to try it...

Hi

Both before and after the accident I spin the spindle at 14'000rpm, or that's what the VFD shows. All the other conditions are also the same. The problem is that during the accident, after...

Hi All

I have a DIY CNC router I built myself, out of aluminum extrudes. I mainly use it for cutting aluminum, in form of 10mm thick plates. Out of those I produce plates and planks of various...

Wow wow! I don't want a flame war in my thread. Chill out guys. I'm sure you both know your stuff, but it seems to me you two talk about the same stuff in different terms, which creates the confusion...

Well my concern is that I don't have an adequate temperature conditioning in my workshop. In the winter regularly it drops to -20C and below during the night. I come in during the day, turn up the...

So according to you filling the profiles with EG would improve things but won't solve the problem? If you say that the EG-filled profiles would bend that means the EG breaking inside, am I right?...

Funny The calculator matches the result you calculated 0.0002mm but there is no field to plug the crossection area (1814.62)
Anyway I'm not going to bother you any more :)
Thanks a lot.

That kind of deflection would be fantastic.

I still have two more questions just to make sure I understand everything right.

E = 70000N / 1814.62mm^2 = 38.5755 means that if I have a solid...

Hi All

I'm designing a router/VMC with the idea to work steel. Unfortunately my only option is aluminum t-slots, which is not ideal. At least I have the option to choose some heavy duty t-slots...

HI Jim

Thanks a lot, I'd never realize that.
I think what's needed is the crosssectional area of the profile. I got this from solidworks measurment, it's: 1814.62mm^2
I think if I put 80^2 that...

Hi All

I'm building my second router and I wanted this time to do the job properly by calculating the forces and stresses the various parts would be subjected to.
The first thing, I wanted to...

Hi Skrubol

I'm already designing my machine with square type guides and blocks. (thumbsup)
Also something interesting (to me at least) that I found while looking at the datasheet of the...

Hi All.

My first question regards mounting steel profile rails to aluminum t-slots. The tightly mounted rail and the t-slot form basically a bimetallic strip. The difference in coefficients of...

I have a question about that:
My current machine uses 16mm round bearings and rails that have 4 rows of balls. I'm not saying thats much better. Actually it's probably worse since there is no a row...

Hi NIC

There is something odd:
http://www.cnczone.com/forums/attachment.php?attachmentid=373612&stc=1
Look at those low power and torque requirements that can't be right?!

Oh I'm sorry I didn't understand what you were saying.
Thanks again for your explanation it really helped me see the difference.

I agree with everything you say. but that part. That would be impossible. While half of the balls or rolls are loaded the other half are sitting or moving in the opposite direction in a back channel....

Hi NIC 77 I really appreciate your suggestions.
I'll probably test the machine cutting steel late today after work.


I assume you're talking about the X axis screws. I'm not sure I get what you...

Hi NIC 77


Thanks :)


My workshop is in a garage. It's a small garage, but I think it would fit a standard VMC or bridgeport.


Ha, you got me there. I really looked at HSD power vs speed...

Duplicate should be deleted...

Hello again.

Thank you all for your replies. As you already noticed by the language I use that I have no experience in building CNC routers or machining. (I didn't even know those aluminum...

So that's why I've never seen a metalworking CNC router at all... Even a factory manufactured one. So I'm guessing that even if a router is build out of heavy steel or cast iron it would still not...

Hi All

I'd like to build a metalworking CNC router for materials such as: hard and mild steels, high-quality steels, stainless steels, and others of the sort. The easiest route for me is to build...

I kind of something like that. I use LinuxCNC so it might not work for me but thanks anyway! That's useful information.