[jbobrout34]

Hi,

I was wondering if anyone could offer some advice.

I'm buying a machine from China. They are open to custom options.
I have asked them about hiwin linear rails and ball screws on all axis as I'm thinking this is better (reading lots of posts)

On a 4x4 router whats your opinion on the best motion setup?

Thanks
jbob

[ger21]

Hiwin or THK raills and ballscrews with at least a 10mm pitch.

[jbobrout34]

Thanks Gerry,

Thought the rails and ballscrew would be the best setup.
I take it the smaller the pitch the more precision?

Thanks again
jbob

[ger21]

All other things being equal, a lower pitch gives you more steps per inch (or mm). However, for a router, a lower pitch will give you slower top speeds, and can result in screw whipping, as the screw will need to spin much faster.
10mm pitch would be the minimum that I'd use. If you want to go faster than 400-500ipm, then you should go with a 20 or 25mm pitch with a belt reduction, depending on the motors you're using.

[samlasercnc]

if for 4*4 feet router,it seems X,Y,Z Taiwan Hiwin square rail linear,X,Y rack & pinion,Z Taiwan TBI ball screw drive way is better.

sam
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[jbobrout34]

Researched the topic and it seems helical rack and pinion is best for higher speeds

Sent from my GT-I8160 using Tapatalk 2

[samlasercnc]

Researched the topic and it seems helical rack and pinion is best for higher speeds

Sent from my GT-I8160 using Tapatalk 2

yes,for 600*900mm or smaller size X Y Z ball screw,X Y Z round guide are better;for larger size than it,1300*1300mm,1300*2500mm etc,X,Y rack & pinion,Z Taiwan TBI ball screw,XYZ Taiwan Hiwin square guide are better.

[cruch]

jbobrout34 : I am trying to send you an PM, but your inbox is full