Workpiece

For CNC teams, Workpiece points to this concept: Part or material being machined. It determines whether the part is located and supported consistently under load. Consistent handling of this concept is a strong predictor of first-pass success. Validate this under real cutting load, because static setup checks can miss deformation effects.

How to Apply It

• Define locating strategy that constrains required degrees of freedom.
• Set clamping force to prevent slip without deforming compliant areas.
• Verify tool and probe access before releasing fixture design.
• Standardize jaw and fixture changeover with controlled reference surfaces.

On-Machine Signals

• Frequent manual touch-up after reclamp
• Datum shift between first and later parts
• Feature spring-back after unclamping

Typical Pitfalls

Fixture wear and contamination are common but underestimated drift sources. A setup can look stable at rest and still shift once cutting forces rise.

Process Standardization

Teams usually stabilize this area by controlling clamp sequence as a standard work item.

• Keep setup records and inspection evidence linked to each process revision.
• Re-validate after tooling, fixture, or control-logic changes.
• Use first-article and restart checks as mandatory release gates.