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taper

It has been 55+ years since I had to do trig. I wear very large "L" plates when working my lathe.

I have to make an inside tapered sleeve to repair the steering ball taper on my tractor to compensate for 46 years of wear. I have replaced the Tie rod end, however the wear is in the steering arm part, which is why I have to make a sleeve. I will bore out the steering arm and fit the sleeve which will match the tie rod end taper.

Tractor is 1964 Fordson Super Major - Ford 5000 in USA ? Fitted with Eaton power steering unit.

Dimensions of the taper are

top 19 mm (0.75 inch) diameter bottom 16 mm (0.63 inch) diameter length between top & bottom 25.4 mm (1.0 inch)

How do I calculate the degrees so I can set the compound to cut the taper ?

Thanks Alan

Reply to
alan200
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The half-angle = arctan(0.5*(0.75 - 0.63) / 1.0) = 3.43 deg. However, I suspect your measurements may not be accurate. Common tapers for tie rods are 1.2"/foot or 1.5"/foot. Your measurements give 1.44"/foot. If your bottom diameter were actually .625" that would be a 1.5"/ft taper or 3.58 deg. half angle.

Reply to
anorton

You are right, I checked my measurements again a bit closer to the bottom edge and also looked at the manufacturers specs, which were

0.625.

Thank you for your assistance, I have to try to re-learn trig for my metalworking, as I did not use it at work. I have no problem with algebra as it was used in calculating formulae and proportions of ingredients for quality control, which was my job. I would probably take a couple of days to get up to speed with calculations as I retired just over 15 years ago and, of course, my employer had to put on 2 people to do my job and they were still slower than I was.

Thanks,

Alan

Reply to
alan200

Put the tie rod end in the lathe and set the compound parallel to the taper with an indicator.

jsw

Reply to
Jim Wilkins

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