What this tooling does
The first-operation roll initiates the metal-forming sequence that curls the end hook around the can-body flange. Its groove is deeper and narrower than the second-operation groove, so its geometry must be reviewed independently.
Typical review triggers
- routine groove wear or visible damage;
- a loose or abnormal first-operation seam;
- a new can or end format;
- replacement of legacy tooling;
- a matched-set review involving the chuck and both roll operations.
Minimum inputs
| Area | Examples |
|---|---|
| Machine | Maker/model, head/station, roll mounting interface |
| Can & end | Diameter, material, relevant end geometry |
| Existing roll | Sample/drawing/profile if lawfully available; material, hardness, coating if known |
| Acceptance | Inspection scope, first article, plant seam criteria |
Material, surface and inspection
Material, hardness, coating, finish and profile-inspection requirements should be agreed for the specific application. “High precision” is not an acceptance criterion by itself; the critical profile sections and measurement method need to be defined.
Relationship to the chuck and matched set
A first-operation roll can be reviewed as an individual replacement, but its working relationship with the chuck and the second-operation roll remains relevant. For applications where multiple tooling elements are changing, review the matched tooling set rather than assuming each component is independent.
Review a first-operation requirement