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big-div
03-23-2015, 07:06 AM
Hi,

I have been having a hard time locating a depth regulating device to engrave with to fit onto my spindle. All the ones I have seen are made for machines that have a spring loaded Z axis. What I am looking for is something that would have this spring loaded built in. Can't seem to find anything ! It would need to fit a Chinese 2.2kw spindle. I suppose If I can't find anything I may have to make something else work.

Cheers

jeffery926
03-23-2015, 08:07 AM
Take a look at this one.
Mini Spring Loaded Engraving Tools Engrave with a CNC Machine, 1-4 inch diameter (http://www.2linc.com/engraving_mini_1-4.htm)

big-div
03-23-2015, 08:11 AM
That'd be good, but max of 3000 rpm, cheers though !

jeffery926
03-23-2015, 08:20 AM
Good luck making one that will handle a higher RPM. :)

big-div
03-23-2015, 08:21 AM
I'm thinking I will need to make another router head that moves on springs with a nose cone to get the speed I need

big-div
03-23-2015, 08:24 AM
A little bit confused with their depth controlling nose cone, I looks as if the nose cone piece spins also ? I am trying to engrave engraving laminate, I think this would damage the surface somehow

big-div
03-23-2015, 08:30 AM
Spring Loaded Engraving Tool (http://cnc-aid.com/) found this one, still don't know how it will go with engraving lam though ! ahh

jeffery926
03-23-2015, 08:31 AM
I would think the RPM limitation has to do with balancing and that could be a problem when having parts with enough clearances that would move freely, especially considering how far it sticks out of the spindle's collet. The 3/8" shank version is rated at 6,000 RPM & 1/2" shank version is rated at 7,500 RPM.

big-div
03-23-2015, 08:47 AM
I think I am just having trouble understanding how the bit won't just get driven into the plastic by the spring, all the other engraving systems use a stationary nose cone that references the work piece height

Sent from my GT-I9505 using Tapatalk

jeffery926
03-23-2015, 09:02 AM
Maybe a spring loaded drag bit may be better suited for your application, but only you would know.

Diamond Drag Engraving Bit for CNC Machines - Use Your CNC Machine to Engrave Metal, Plastic, Glass, and Granite - WidgetWorks Unlimited (http://www.widgetworksunlimited.com/CNC_Diamond_Drag_Engraving_Bit_p/cnc-dmnd_engrv-250.htm)