42
Statistical Process Control (Summary)
Process Confirmation.
Molex recommends that prior to production, a 25 piece process capability study on both crimp height and pull force.
Setup/Visual Inspection
Minimum 5 piece sample should be checked for crimp height per specification sheet.
Visually check bellmouth, conductor brush, insulation position, cutoff tab length and insulation crimp to specification
sheet guidelines for optimum setup.
Production
Visual check every bundle by fanning the crimped wires.
Check crimp height every 250- 500 pieces.
Molex recommends control charting of crimp heights for long production runs.
Example Control Chart
Note
: For more detail information please refer to the Molex Quality Crimping Handbook, Order No. 63800-0029.
X & R Chart
Contol Limit for sample of 5 = Avg (Avg of 5 readings) + .577 x Avg (Ranges)
To Next Page