1 Attachment(s)
3D Touch Probe / Edge Finder - A Low Cost Probe?
Hi all, the 3D probe shown in the attached photo is being sold on the web by several vendors, ranging from AliExpress through eBay to CNC system sellers. It looks quite nice, having only a 6mm shank and being quite short so good for machines with limited daylight.
Does anyone have any experience with these they could share please?Attachment 31377
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Quote:
Originally Posted by
JohnHaine
Hi all, the 3D probe shown in the attached photo is being sold on the web by several vendors, ranging from AliExpress through eBay to CNC system sellers. It looks quite nice, having only a 6mm shank and being quite short so good for machines with limited daylight.
Does anyone have any experience with these they could share please?
Attachment 31377
I am using this one:
https://youtu.be/EuDj0P4_il0
It comes with several tips, even long ones.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
It's possible I could model the internals but I'm not convinced it would be valuable as I don't plan to substitute any internal parts. My main interest is mounting it on my machine on an arm fitted to the tailstock.
Note that there's a pretty good exploded assembly drawing on the various websites.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Ordered this from AliBaba, Paypal has taken my money via Alipav. No record of transaction on Alibaba, Bit concerned and have lodged a claim with PPal.
Anyone else have a problem please?
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
I've bought a few things from Alibaba without problem.
Note that Alibaba is really a trade / wholesale site, whereas Aliexpress is a retail site and is better suited to smaller purchases. The payment / tracking system is also more transparent - and quicker.
Give it a day or two for the transaction to happen. You can also message the seller if that helps.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Muzzer - Thank you. My transaction was with AliExpress and there seems to be something wrong with their site, as some parts are under maintenance. Probably do not want to sell now at the discounted price?? We shall see!
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
I wasn't expecting it to arrive until next month but on the mat this morning. Looks very nice and compact on my little mill.
One thing I'm not sure of, the connector at the probe end seems to be a USB-C type but the plug only goes in a couple of mm but does give a firm click. USB-C usually goes right in. is this normal have people found please?
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Yes, that's what I found. The socket isn't as deep as a normal USB-C but that seems to be the way it was designed. Mine works fine - was testing it yesterday with my Centroid Acorn lathe.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Thanks for the reassurance Muzzer. I'll try it out tomorrow.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Here's mine. Don't worry about the Bluetack and magnetic base - I'm just exploring the Centroid lathe tool touchoff functions!
https://www.youtube.com/watch?v=av8ovkFJTwc
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Well guys I still have no acknowledgment of my order from AliExpress. They have taken my money and P/Pal are supposed to be investigating but nothing from them either at this time.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Tested the unit today. Directly compatible with Mach3 and seems to work very nicely!
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Relieved to say that it turned up today.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Quote:
Originally Posted by
Leadhead
Relieved to say that it turned up today.
Phew! Was afraid I'd persuaded you to buy a pup!
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Actually John, thank you. It looks a nice piece of kit.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Just got mine today. 12 days from ordering.
Looks good. Can't test it out for a little while yet though.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Have you folks seen the Craty CNC software for Mach3 & UCCNC. I have had it for a while and it is well worth a look.
In particular the compensation for eccentricity in the probe and the point cloud programming which I have used to good effect.
Quite inexpensive as I recall. I have no connection, other than a satisfied customer.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
http://www.craftycnc.com/
Thanks! Looks very interesting, I think I'll download the trial version and give it a go.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
John - You may have to search through his youtube vids. Google what you require as youtube index does not always find them all.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Quote:
Originally Posted by
Leadhead
In particular the compensation for eccentricity in the probe....
Are you aware that these probes have adjustment for eliminating eccentricity (as most do)? In this case, they have 4 radial grub screws that can be used to shift the tip in X and Y. You need a dial gauge (DTI) with light tip force, then adjust the screws until there is no runout / eccentricity when you rotate the probe. You should only need to do this if (when!) you have a crash and need to replace or straighten the tip although a periodic check is sensible.
The Renishaw probes use a different system, with a ball bearing pivot under the base and 4 axial screws but to the same effect.
The trigger point for most of these probes varies slightly according to the orientation of the probe, due to the 3 internal pivots. So it's a good idea to orientate the probe in the same direction each time you use it, for consistency. That's a different issue to eccentricity.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
Have owned many probes in my lifetime. If this one remains constant over time I will be overjoyed.
(Incidentally do you check the runout of your collet chuck before setting the probe. That can be an eye opener in itself!!)
I have spindle jigs to maintain orientation ranging from scratched lines to mechanical dowel slots.
Looking forward to exercising the new one.
Hope the experience sharing will will continue.
Re: 3D Touch Probe / Edge Finder - A Low Cost Probe?
I don't use a collet chuck to mount and remount my Renishaw probe on the mill - it came with its own pukka ISO40 holder. For my lathe, this DIYO probe will be used for tool touchoff, mounted in a fixture, so eccentricity won't be an issue - it just needs to stay fixed in position. Perhaps when I've completed it I will post pics / vid!