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.

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Tool base point

images/download/attachments/95434791/nick37.png

Axial tool overhang

images/download/attachments/95434791/nick38.png

Overhang for rotary head

images/download/attachments/95434791/nick39.png

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.

images/download/attachments/95434791/nick40.png

Base tool point on turret

images/download/attachments/95434791/nick44.png

Straight turning tool overhang

images/download/attachments/95434791/nick42.png

Boring bit overhang

images/download/attachments/95434791/nick43.png

Base point for radial milling head

images/download/attachments/95434791/nick41.png

Base point for axial mill head