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Rack and pinion ceasing

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Ian P23/11/2015 18:08:10
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2747 forum posts
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John

I misread what you were saying. I thought you meant that the handwheel 'had' to be in the width of the saddle whereas what you were inferring was that it was an 'ideal' placement. Machine controls are positioned for operating ease traded off with many other factors.

Ian P

MW23/11/2015 19:34:11
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2052 forum posts
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Any lathe I have seen has the pinion within the width of the saddle which to me makes a lot of sense. Except the ML10 probably because there was no room to get it anywhere else. That uses a helical type gear / worm wheel running on the lead screw that also functions as a screw cutting indicator even on the metric ones.

The parts take a lot of stick and have to maintain an accurate alignment so I would most definitely make separates housings to carry the shafts and mount those on the apron.

John

I concur with this, It's exactly what i'm going to do and press fit some ball bearings inside, i'll turn the insert for these using a boring tool on the lathe (around 22mm with a depth of 7 or 8mm?) and mount the housing with socket screws, making sure to align the housing with a bar/shaft in the apron, it should increase the area the shaft has to rest on, and in turn help maintain the alignment .

Michael W

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