Prufi
PRU-140Declared input

Selected boring tool minimum bore

Machining

Scope and limits

Selected actual pre-boring straight bore against declared bar/head/insert assembly minimum bore. Explicit geometry_state=pre_boring required; omitted/finished_part valid inputs remain unassessed. No starting bore inferred from final geometry.

Standards and references

SANDVIK-BORING-TOOLING:web-2026-10-03

Sandvik Coromant internal turning tooling dimensions and overhang recommendations

Source scope
Selected internal turning bar/head/insert assembly; published DMIN and operation-specific maximum overhang. No universal bore diameter or length/diameter rule.
Implementation in Prufi
PRU-140 compares an explicitly declared actual pre-boring supported bore with the selected assembly DMIN. PRU-141 compares its complete axial span plus declared holder clearance with the selected assembly maximum overhang. geometry_state=pre_boring is required for assessment; missing or finished_part stages remain unassessed. No initial bore inferred from final CAD, insert/fixture access certification, vibration or process-quality prediction.

STEP examples for this check

No public STEP example is currently assigned to this check.

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