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 Thomas Powell | Home > Mill > RF-45 Dovetail Mill > CNC Conversion > 
Z-Axis Ball Screw conversion
Date(s): January 1, 2004. Album by Thomas Powell. 1 - 26 of 26 Total. 653 Visits.
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As you can see the true Rong-Fu 45 has a rack and pinion set-up for the z axis.

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- Bolt holes are 12mm spaced 75mm apart.

- The diameter of the half circle you see is about 3 1/4".

- There is a shallow 22mm slot (unpainted portion) that the spacer block sits into.

- The spacer the rack bolts to is 2 1/4" x 7".

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- There is a space of about 2 1/4" in between the uprights.

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Needed to true up the casting on top of the column to mount the motor plate.

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Used a Bridgeport with a Horizontal attachment.

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Casting was off by quite a bit but did not need to be true with the original design.

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Made a plug for the hole where the original "Z" crank handle went.

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Came out pretty good.

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Industrial Hobbies "Z" axis mount was too wide.  Scribe shows how much had to be milled off.

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You can see the ridge from the factory rack that had to be milled off.

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Spacer block factory rack and pinion rack was mounted to.

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Not totally finished yet.  Brake mounted to motor activated (turned off) whenever there is power to the Geckos.

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