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01-16-2011, 08:26 AM #1
Spindle tachometer with SFM calculator?
I am thinking about adding a spindle tachometer with a SFM calculator to my lathe while I have it down for a little refurbishing. I have found two different ones by searching on the net. Here are a couple of links to the different ones I have found.
For some reason I think this one is out of the UK, but I can't find the info back that makes me think that.
I think this is the same unit for a little less money, if the price is current.
LittleMachineShop.com - Tachulator Tachometer & SFM Meter
I am wondering if anyone has any experience with any of these units. Or if you know of similar units please let me know about them.
01-16-2011, 09:04 AM #2
I like this little hand held tachometer .
Picks up signal from small piece of reflective tape .
Use on any equipment , then return to drawer .
Once you have rpm , sfm is easy to figure .
01-16-2011, 09:26 AM #3
That's a nifty little idea there. What would be REALLY cool is if you could figure out how to do it elegantly and mechanically ... might sell a few of those ... Like a tach with a sliderule bezel for the FPM. Kind of like old Cinci manual mills have for cutting speed.
01-16-2011, 09:29 AM #4
But on a more practical note - Does your lathe actually have infinite speed options? If just belt and back gears maybe a little chart would do fine. Material diameter down the side, belt posn across the top, SFM where they cross. No moving parts, no batteries...
If you have VFD then add a few more columns across the speed range. Should get you plenty close.
01-16-2011, 11:06 AM #5
I have the Tachulator on Heavy 10 with a VFD. Works quite well and I like the ability to monitor SFM while the diameter of the work piece changes. With the VFD you can dial in exactly what you want
02-22-2011, 03:19 PM #6
Hi Dennis - Just ran across this thread and was wondering how/where you mounted the sensor on your Heavy Ten Tachulator installation? TIA. Ed R.
02-25-2011, 06:54 AM #7
Sorry to take so long to post pics of the Tachulator pick up sensor. Basically I just used a piece of flat stock mounted to the back hole of the bull gear guard. I gave the flat stock a slight twist with a pair of pliers once it was in place to get a good angle at the spindle.
Keep in mind that my Heavy 10 has a D1-4 spindle so I have a litle more of the spindle to work with than a threaded spindle would have.
02-25-2011, 10:38 AM #8
No worries Dennis - Thanks for going to the trouble of posting the pics - they are very helpful, particularly as I also have a D1-4 spindle mount.