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Type: Posts; User: BrandonBe

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  1. Buying mid '90s Fadal 4020 and upgrading to 5 axis

    I'm planning on buying an older 3 axis Fadal 4020 and converting it to 5 axis with a trunnion. The goal is to machine precision impellers (so will need to do simultaneous 5 axis machining).


    This...
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    Re: Which CNC Spindle Motor to Get

    I have a good idea of what spindle motors are good for wood but I am not so sure about steel and other metals. Are there any models / brands that anyone could recommend?
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    Which CNC Spindle Motor to Get

    It's been a while since my last post but I have made some significant progress with building my CNC Mill. Here are some pictures of the concept drawing and what I have completed up until now:
    ...
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    Re: CNC Electronics

    Louietienza, why should I "get something in the range of 48V or less" for a driver? What difference is there between drivers above or below 48V?

    And what is the UC100 anyway? I searched it on ebay...
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    Sorry, you did give me some good options....

    Sorry, you did give me some good options. Unfortunately the geckodrive is out of my range. But how about these steppers:...
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    Re: CNC Electronics

    I am still not sure where to go from here. I've looked in a bunch of places from ebay to albaba to some specialty stores for CNC parts and everything was either bad quality or overpriced. I really...
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    Re: Final Design Review

    I have purchased the metal and linear motion materials so I am kind of limited with any modifications I can make now.

    For the Z-axis, I am making it out of 0.5" steel plate and there is less than...
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    Re: CNC Electronics

    Alright. I need to keep the cost below $1500. I had all the steel parts donated so all I need to buy is the linear control system (which I have already purchased for $530.00 CAD (Profile rails & C7...
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    Re: CNC Electronics

    These kits seem alright. Thoughts?

    3 Axis CNC Nema23 425oz in Dual Shaft Stepper Motor Motor Driver Controller Kit | eBay

    3Axis Nema23 Stepper Motor 425oz in 3 0A CNC Router Controller Kit |...
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    Re: CNC Electronics

    Ok, I see. I kind of figured these were pretty cheap. So does anyone have any recommendations for 3 Nm steppers with drivers, power supply, and breakout board? Preferably under $350 CAD with...
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    CNC Electronics

    I am building a CNC Mill

    http://www.cnczone.com/forums/attachment.php?attachmentid=316758&stc=1
    and I need some help with electronics. I found a supplier and I was wondering if someone with more...
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    Re: Final Design Review

    http://www.cnczone.com/forums/attachment.php?attachmentid=316036&stc=1http://www.cnczone.com/forums/attachment.php?attachmentid=316038&stc=1http://www.cnczone.com/forums/attachment.php?attachmentid=31...
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    Re: Final Design Review

    How would I go about using the dowel pins? I haven't had experience with them before and am not quite sure how they are implemented.

    And I thought that the force exerted on the tube by the bolts...
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    Re: Final Design Review

    I've added a 1/2" steel plate (most likely hot rolled due to cost, or is cold rolled required for this application?) for the gantry cross member. Will I need to mill the mounting surfaces flat for...
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    Re: Final Design Review

    So I've decided to go with the lap joint and bolt method for attaching the various beams. I also removed the rail mounts so the rails will now be attached directly to the frame. I also lowered the y...
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    Re: Final Design Review

    Wow, thank you so much for all of that advice David! I can see you really know what you're talking about.

    I was planning on welding the bottom base and then the gantry portion of the CNC...
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    Re: Final Design Review

    Here is the torque graph for the stepper motors I am planning to use. I feel like this should suffice as the pitch for the ball screws is only 5 mm, the max mass the X axis will need to move will be...
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    Final Design Review

    I just finished my SolidWorks model for my steel frame CNC. It will have a 1.5 Kw spindle motor, 15 mm linear rails, 24", 18", and 6" X, Y, Z travel respectively. The frame is 3" square tube with...
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    Re: Need design input

    I believe I will go wit 3 Nm Steppers. Is there a big difference between analog or digital drivers? And I am in the process of getting the torque graphs for the steppers but i feel they are powerful...
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    Re: Need design input

    Does anyone have any idea how large the stepper motors will need to be for my design? I know there's a lot to consider but i'm at a loss right now. Would I be able to use 2.2 Nm, 1.89 Nm, or even...
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    Re: Need design input

    What kind of bearing block spacing should I use if I have 2 blocks on each linear rail? I was thinking that 8" would be enough. I don't want to space them out too much as that will cost a lot more to...
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    Re: Need design input

    Evidently welding is a less than perfect method for producing a CNC Mill frame for my purposes. So how would something like this do? I've shortened the gantry and bolted 4 braces (in red) to support...
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    Re: Need design input

    OK. So how would I be best off making the frame then? I was planning on cutting the tubing and meticulously filing the ends until they sit at about 90 degrees, then clamping them in place with a 90...
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    Re: Need design input

    Great advice so far! I'm a bit concerned with the frame now though. I plan on using 90 degree clamps to weld the frame. Will those be enough to get within 1 degree of 90? I've also seen people, once...
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    Re: Need design input

    http://www.cnczone.com/forums/attachment.php?attachmentid=311550&stc=1http://www.cnczone.com/forums/attachment.php?attachmentid=311548&stc=1

    This is a rough design I'm working on. Pardon the low...
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    Re: Need design input

    Wait, what? So I don't have to pay taxes or duty fees if it's from China? What kind of processing fees are there, like what should I expect to pay roughly for ~$1500 worth of stuff from china?
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    Re: Need design input

    Does anyone know how much import duties are for Ontario? And will a 1.5 kw spindle motor be enough to mill aluminum? I did a lot of research and haven't found many people milling aluminum with such a...
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    Re: Need design input

    Thanks, I appreciate all the great advice! I understand the frame will need to be much much sturdier. And I see that 0.001" is a bit hopeful. Realistically I would be pleased with anything below...
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    I'm interested in finalnpart tolerance.

    I'm interested in finalnpart tolerance.
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    Re: Need design input

    Could you please give me an idea of what is wrong with that design? I know it isn't a great design obviously but why is it terrible? And is steel tubing typically straight enough to attach profile...
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