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#1
 
07-28-2007, 11:15 AM
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Hi! I thinking of buying a used ballscrew for an ok pric but it has a pitch of 20 mm. Will this cause a problem in accuaracy? The Z have a pitch of 10 mm and the y a pitch of 5 mm. Will it be the same to put a 1:4 gear ration on the x (pitch of 20) and 1:2 for the z, then all 3 will be down to a pitch 5, or am I wrong? Would be greate with some ideas.  |
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#2
07-29-2007, 10:08 PM
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| Where accuracy is concerned it will be down to the quality of the screw and the lead error. Other than that your thinking seems to be fine to me. John |
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#3
07-30-2007, 04:10 AM
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| As John said it should be fine, so long as your servo's/steppers can drive the screw, and you will get great rapids. I have my eye on a 25mm/turn screw, and am thinking of going 8:1 reduction. Russell. |
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