1200mmX900mmX170mm 4axis cnc

[Nr1madman]

How close can be the bearings on the gantry so I can have good accuracy and eliminate the tolerance when torgue applied on Z axis ?
The ends of the tubes is going to be welded with steel flanges, I prefer minimum welding for minimum stress and to be able to adjust- align everything.

Aah then I understand about the ends ;)

I don't know about the critical spacing of y axis bearings but I've seen lots of people using gantrys that are only 100mm high (50x100 steel tube) and that seems to work. The better question is what distans you are planning from lower y bearing to workpiece?

[Nickhofen]

Aah then I understand about the ends ;)

I don't know about the critical spacing of y axis bearings but I've seen lots of people using gantrys that are only 100mm high (50x100 steel tube) and that seems to work. The better question is what distans you are planning from lower y bearing to workpiece?

200mm maximum, with rising table that will minimize the distance for aluminum cutting .

[Nr1madman]

I also have great problems with shipping and taxes. 25% in Sweden ;) I usually hope, pray and do strange voodoo when ordering to make the post / customs to overlook my shipment ;)

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[Nickhofen]

I also have great problems with shipping and taxes. 25% in Sweden ;) I usually hope, pray and do strange voodoo when ordering to make the post / customs to overlook my shipment ;)

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That seems like a good plan! :-)

[Zeeflyboy]

This may be of use - its the technical drawing I made when ordering my screws. The dimensions are suitable for an FK12 angular contact on the motor end and an ff12 floating bearing on the other end.

[Nr1madman]

You know you suffer from DIYmadness when you see a use in every metal part you find :D

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[Nickhofen]

You know you suffer from DIYmadness when you see a use in every metal part you find :D

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Haha,that's true!

[Nickhofen]

Yesterday I spend two hours at customs office to make the papers pay take my balscrews and linear rails.
Everything arrived in good condition and packed very well, Fred and BST Automation appears to be very professional at what they are doing.
Here is a pic of the stuff...

[Nickhofen]

I am going to be out of country for two weeks, so I will have plenty of time to design the bench.
50x50 cm is the most easy steel tube bars to find but I know is out of discussion for building a bench, any recommendations about what tubes to use?

[Nr1madman]

Ooh goodies!
Did it arrive in good shape?
So that's why you was stuck in customs.. I thought you had been traveling and suspected of smuggling or something :D

You can build one hell of a bench using 50x50 CM steel ;)


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