Three-Sided Profile Machining: One Setup vs. Two Re-clamps
Removing two 14-second re-clamps saves an estimated 84 minutes over 180 parts. Check whether head indexing offsets the gain.
This application example uses public references and explicitly stated planning inputs. Figures derived from assumptions are estimates for evaluation, not measured customer results.
Production question
What does eliminating two manual re-clamps save on a run of 180 three-face parts?
Worked calculation
Use 38 seconds of machining plus 18 seconds of common handling per part. Two 14-second re-clamps bring the manual route to 84 seconds. The single-setup estimate is 56 seconds, saving 28 × 180 ÷ 60 = 84 minutes per run before downtime and rework.
How to validate it on the shop floor
Time both routings on matched parts and include any index or head motion in the one-setup route. Measure hole-to-slot relationships across faces using one agreed datum system and check for tool clearance at each face.
What to do with the result
Run both routes with the same lot and operator where practical. Count misoriented parts, datum resets and clamp marks as separate failure modes. A single setup is most valuable when the drawing controls features across faces and the program can reach them without extra handling. If a cutter cannot reach behind a return flange, preserve the additional operation in the comparison instead of assuming the whole part can be machined in one clamp.
Practical follow-up
When does the single-setup route lose its advantage? When its extra indexing, tool access or inspection time consumes the 28-second saving. Compare actual good parts per hour.