Center

Engineers use Center to describe this idea: Center device used to support the end of a workpiece. Setup stability here limits both rework and hidden deformation errors. Consistent handling of this concept is a strong predictor of first-pass success. Location and clamping sequence should be controlled as rigorously as cutting parameters.

Execution Guidelines

• 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.
• Reconfirm datum transfer after each reclamp operation.

Early Indicators

• Datum shift between first and later parts
• Feature spring-back after unclamping
• Setup repeatability difference by operator

Risk Focus

A setup can look stable at rest and still shift once cutting forces rise. Over-clamping introduces elastic error that appears after unclamp.

How Teams Standardize It

Teams usually stabilize this area by maintaining fixture condition as part of process control.

• 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.