Tool overhang


Tool overhang is distance from tool base point to tooling point.

Tool base point is base point of instrument block ( tool and tool holder) at machine coordinate system.

For mill machine tooling point lie along tool axis.

Some overhang definitions for mill machines are shows below.

 

nick36

Tool base point

 

nick37

Axial tool overhang

 

nick38

Overhang for rotary head

 

nick39

Overhang for 2 rotary heads

 

For lathe machines base point lie on turret base plane along tool fix system axis.

Some overhang definitions for mill-lathe machines are shows below.

 

nick40

Base tool point on turret

 

nick44

Straight turning tool overhang

 

nick42

Boring bit overhang

 

nick43

Base point for radial milling head

 

nick41

Base point for axial mill head