Cheap spindle speed method

May 27, 2007 6 Replies
S

I started designing and building a digital readout for my C6 spindle speed - spent hours lost the designs and layouts.



However found this on eBay:



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Works out shipped at less than £20. My design was based around a tachometer disk with 60 3mm holes around then edge of a CD mounted behind the spindle pulley with an opto sensor, which scales RPM to Hertz as an output from the sensor. Put the two together and its a really quick addon. The panel meter hasn't arrived yet(!) but once installed I will post the results.



Steve


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S

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Steve

You were up early for a Sunday, That looks interesting, I will look forward to hearing how you get on. Electronics are not my thing, but I reckon even I could sort that out.

Steve Sheffield

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A

My method takes some beating for economy. Take a length od studding the longer the better. Stick it in the chuck. Put anut on it. Measure and mark a length on the studding. Start the lathe. Grab the nut and time it between the measured marks. Fron the pitch , which you should know and the time the rpm can be calculated,. As has been said absolute precision is not needed and you only have to do it once.

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N

LOL! This method can't be beaten! In any field! :-))

Nick

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S

Unless the nut grabs you back...

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R

How about?

Check what gears are on the lathe, engage the leadscrew and time between marks.

Russell

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A

Safer, definately, wonder why I didn't think of that!!!!

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