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Author Topic: Z axis motor mount........  (Read 1261 times)
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CNCexplorer
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« on: March 31, 2012, 08:01:03 PM »

I am upgrading my cnc aluminum rail system to linear bearings. I am first making a AUTOCAD model of it in autodesk inventor. And spend as much time as i can with the design before i start building. I have decide not to change the y axis to keep the $$$ down. Also be using wood. here is what i got so far.

Q- Any good design for mounting the motor for z axis? (pic or link perhaps be good)
Q-Q-links to cheap aluminum sheet or what other material to use?


Thanks & have a wonderful day:)


* newdesign113.JPG (173.33 KB, 1366x768 - viewed 199 times.)

* newdesign111.JPG (153.04 KB, 1366x768 - viewed 139 times.)
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Tweakie.CNC
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« Reply #1 on: April 01, 2012, 07:33:22 AM »

Hi CNCexplorer,

No matter what you do, there will always be something better and so everything has to be a compromise. However, I would suggest that you go for 'fully supported' rails on the X axis (if not both X and Z) - there is not that much difference in price.

Although wood is easy machining if you start V-Carving then 'chatter' or tool vibration can spoil the work so rigidity is an important consideration here and unsupported rails (less than about 25mm dia.) can flex a lot more than you would think.

Tweakie.
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Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
CNCexplorer
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« Reply #2 on: April 01, 2012, 03:35:15 PM »


Although wood is easy machining if you start V-Carving then 'chatter' or tool vibration can spoil the work so rigidity is an important consideration here and unsupported rails (less than about 25mm dia.) can flex a lot more than you would think.


Thanks a lot tweakie for that info. Very helpful
U have a great machining day Wink
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