Gear hobbing

Posted by uli Schnelzer 15/04/2022 10:12:07

I remember several articles of Gear hobbing in ME and MEW. in one they use the
DP thread cutting feature of the machine to drive the hob. And then the building
of a complete one purpose hobber in MEW iirc from the numbers 245. At the
moment I try to make a similar project with my little Emco C5. I want a life
toolholder from a CNC lathe with a motor and an encoder. The measure
of the encoder will divide with an arduino or simpler an oldschool ttl-ic circuit
to the desired tooth number.

If I use an 500 cpr encoder so I get 2000 peeks/rev with the decoupled
spindelmotor. I want to drive the spindle with a 10/1 geared stepper motor,
so I get 2000 steps/rev of the hob. The divider give 1 peek out per tooth
of the gear. the feed of the machine can be made with the normal feed
of the machine from the spindle.

The biggest problem for me, is the electronic part. It were good, if I
can start with the index peek from spindle and hob encoder, so I can
go a bit deeper, if the geartooth isn't deep enough, but I haven't any
idea, how I can realise this.

----------------------------------------------------------
Hi,
This may be of interest was seen in MEW 193 ,this Syncron system as far
as i am aware is still available in Pcb form ,if you are interested
send a PM with your e mail address and i will try and find out if they
are still available.

John