Design intentThis is my 4th axis.
A "K11, 100mm, 3 jaw chuck".
I already made a custom steady-rest for it but still, the existing jaws are not very good at gripping soft, cylindrical blanks to mill.
So I want to have either cylindrical chuck-jaws or base jaws that I can bolt any kind of custom jaw-geometry onto.
Existing hardwareThanks to Jeremy Parton on Google+, who pointed me to this website ,
I know that:
- K11 is grouped into K11 (1 jaw), K11A (3 centering jaws) and K11C (3 independend jaws)
- meaning we have K11A here
- K11A are ISO3442 standard clutches.
- D2=84mm (diameter between mounting-bolt center-points)
- D3=22mm (shaft diameter)
- H=74.5mm (thickness of chuck with jaws)
- H1=55mm (thickness of chuck)
- Z-d=3-M8 (bolts mounting the chuck to the face plate)
Options consideredI'm currently investigating these 95mm jaws for turning machines.
The chuck they come with is not compatible because it uses a thread to attach to the shaft.
This doesn't work when changing direction. So I need to use them with the existing chuck.
This chinese seller seems to sell K11-100mm chucks and the chucks I want. So he should be able to answer if they fit together.
What I actually did
In the end I now meassured the existing jaws and created a parametric CAD design.
The single design has 3 configurations for labeled Jaw #1, #2 and #3 .
After getting a single Jaw #2 to fit properly....