Thread cutting on a Stanko 1A616

[ksor]

I'm trying to figure out how thread cutting is done on this lathe.

The change gears on the left side of the gearbox give me some problems - I think I miss some of them !

I only have 2 dobble gears and 1 bigger to connect them.

The 2 dobble gears have this stamped on the side:

M2 20-55

and

M2 25-36

and it's the number of teeth on each single gear ... what is the "M2" standing for ?

I have got some copies of some tables on how to set up for thread cutting and I can see
there is mentioned some teeth number that I don't have !

So my question is:
How many change gears is normaly delivered with the machine ?
Only the one set I have (M2 20-55 and M2 25-36) or ... ?

You can see some Pictures here - Google translation is avaiable to the right just
under the menu line:

http://kelds.weebly.com/gevindskaeligring.html

 

[Till]

How large is a single tooth? M2 is probably the gear's pitch (module, modul).

 

[Swifty]

M2 could possibly mean module 2 tooth size.

Paul.

 

[ksor]

>> Till and Swifty

OK, then the "m2" has nothing to do with the threads but should be used IF you want to make another set of gear changing Wheels - right ?

 

[Swifty]

That's right, it looks like it means the size cutter used to machine the teeth.

Paul.