Thread: to wobble or not to wobble
When I worked with CNC mills many many years ago, to set the datum on X and Y we used a wobbler, basically a 0.2 dia ball mounted tip that deflected when very close to datum edge.
What is used now to set the datum on X & Y axes.
same thing - a wiggler or an edge finder, unless you have some clever laser-y video-y thing...
Last edited by compfranon; 28-03-2010 at 01:09 AM.
you put them in the spindle, set it spinning, then jog to the X-axis datum edge until the edge finder 'splits', raise the Z, jog in a further 2mm (for a 4mm one) and zero the DRO or set the axis zero as appropriate. then repeat for the Y-axis... see video
Thanks Irving, they operate pretty much the same as the wobblers I remember. Might look out for the led version on fleabay, looks useful if datuming a rear edge.
Forget about the light up ones, they are just a gimmick, designed to attract moths that think they will do a better job. Just try using them on a non conductive material, you will soon realise why. I actually gave one away a couple of days ago. As useful as a bowler hat with sleeves.
The ones from Arc Euro do a great job.
I have tried everything over the years, wigglers LED's, lasers, playboy [ but we won't go there ] and I have always gone back to the wiggler / edgefinder.
I recently bought a pair of the ones Bogs linked to from ARC and these are my tool of choice only because I work in metric and my old bent up wiggler is still in imperial.
I bought one of the audible and light up ones, cost me about 50 quid so for that money it has to be the best thing since sliced bread ?
Nope, because of the brightly lit workshop and running machinery on the first edge I didn't see the light or hear the beep so that was 50 quid thrown into the bent bits scrap bin.
Oh well another flat battery in the car park of life.John S -
By dsc in forum Lead Screws, Nuts & SupportsReplies: 7Last Post: 14-12-2013, 07:35 PM