2014-11-25 7:28 GMT-03:00 andy pugh <[email protected]>: > What is wrong with the existing spindle sensor?
Andy, just before answering you I removed the sheet that covers the acces to the sensor, and found out that it's a rotary encoder. The brand is Nikon and the model number is RFh - 1024 - 22 - 1M, so I guess is a 1024 PPR encoder. Also it has to have an index pulse for threading. I was just guessing before that I would have to replace it because I thought that the sensor might be a tachometer with and index pulse or something like that. I wasn't sure because the manuals don't say a thing about it but now I know what I have there :) Anyway the main reason of why I need 360 PPR is because as you know in the automotive camshatfts lobe positions between cylinders vary by 90° degrees, and between inlet and outlet there are more or less105°, in any case the variation usually occurs on a scale of 1° degree. So my idea was for rough cutting to have a resolution of 1° to ensure I can machine all the camshafts. Having a 1024 PPR encoder is not that bad, I guess I can scale it using HAL (is that right?) and that would give a pretty accurate variation for cutting the lobes. I'm aware that a few relevant points around the lobe will do the trick for making the profile accurate enough, the main concern for me is that I need to offset the angular position as I change from one lobe to the next one. -- *Leonardo Marsaglia*. ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
