Hi guys .. first post on this group, known as "hanermo" on mach, diycnc, etc etc
I am now engaged in the making of a commercial production quality T&C grinder.
Steel box to hold it.
The heart is a surface plate, 635x400x100.
Linear guides all around, hiwin 30 mm, 32 mm ball screws, servos.
I got the surface plate this week from England (Im in Barcelona, Spain), and should finalise the design next week.
The head will be on a separate box, with 500 mm vertical movement.
To start with, I am using a jobshop quality 200 mm "basic" grinder from abratools, a chicom 30 kg/900 W tool.
Head with structure will be about 150 kg.
The head will hang above the grinder, in its own steel jig & structure.
Again, 30 mm linear giudes and 32 mm ballscrew.
The head mount, a torsion box, will be solid 50x50 mm billet F1 tool steel (a basic cheap tool steel available in spain).
The table with structure will likely be about 200 kg.
I plan to put some quality wheels on it, dress them, and try surface grinding.
I will use chinese Ac brushless servos.
Mach3.
Also fully manual controls.
And mount a series of accessories to this, lights, microscopes, 1 micron glass scale dro on all axis etc.
I hope to make an autoloader to change tools, parts, fixtures, heads.
I expect to get better than 2 micron resolution, and better than +/- 2 micron repetability.
On my lathe, I got 1 micron, so this is very doable.
For fine adjustment, I will use hardened and heat treated grade 12.9 screws, 12 mm diameter, at 0.5 mm rise on thread.
The charts say they have 12 tons failure, so it shoud be rigid ;(
Have bought the special dies, now waiting for them.
I may lap the threads, need to make a lap jig first for my little minilathe.
And then make a brass lap, with a jig to bias against left or right threads.
This is supposedly good to better than 0.5 microns.
Do you guys insert pics inline or first upload them somewhere ?
So far, I still need to finalise some design stuff, and can then got get the steel bits.
I want to start making, but am being patient as its much easier to readjust stuff on the PC.
when its done, it can make inserts automatically ;)
