Retrofitting a 1986 Maho MH400E
So maybe a complete new spindle cartridge type with more torque is the way to go?
ATC at the same time maybe?
The MAHO's vertical spindle bearings are lubricated for life, whatever that means. Since mine sat unused for probably 20 years, I have vague concerns about those bearings. Paying €265 for a 1.5kW ER16 chinese HF spindle and VFD seems for the occasional engraving job makes more sense to me that risking the main spindle bearings and a fragile expensive assessory.
Then again I already have a set of P4 spindle bearings I picked up when I was planning to make my own 30 taper mill spindle for my Deckel GiL frame. Maybe making my own spindle would be a good time waster
RotarySMP wrote: Maybe maknig my own spindle would be a good time waster
If you can easily get a motor mounted to drive this it may be better solution. Been looking at that option but I have no easy way to mount a separate motor to drive the extra spindle on my milling machine.
Andy, would you mind sharing your scalering.ngc macro please? Do it just do the ticks, or also the numerical markings?
I need scales on a couple of jobs which are already mostly done like my drill press downfeed knob, or the universal tool holder on the Clarkson.
RotarySMP wrote: Andy, would you mind sharing your scalering.ngc macro please? Do it just do the ticks, or also the numerical markings?
Only got the first pass done yesterday, and it looks like there might be hard spots in the surface, so I might have to give up on shaping it. I'll do a couple more passes and see. Sorry about the crappy photo, but I had to reach behind it with the phone.
I inquired about these documents just in case they might have something I could use during a rebuild (which I'd love to do this year), but that doesn't seem to be the case. I was inspired by this American mill rebuild video in which you can see the guy has a booklet with drawings of all the assemblies that seem to be a fantastic help for repairs:
I'd appreciate any input.
Glemigobles wrote: Also Mark, I haven't the faintest clue on how to use a shaper but it's really cool you can do that setup! Prior to your mentioning it, I've never seen anybody use that attachment before.
They are often called a "slotting head" as they convert the mill to a slotter.
Typically used for keyways and splines.
There is a slotting head for my Harrison mill, but I let one escape on eBay last year and haven't seen another since.
But I have been giving seriois consideration to making my own from scratch, with the added feature of a CNC rotation for the cutter.
This would allow for the generation of internal gears like this:
However I don't think that there is any need for the 5th axis, circular interpolation ought to work just fine.
I think that to re face that anvil I would have used the lathe and 4-jaw chuck, though.