00196851-02 OG SIPLACE Operation of X and SX-Series with SSC (SW70x) - 第120页
SW 703 Prepare the line – Important Factors - DPM,MFR, Scrap Ra te : 120 DPM,MFR, Sc rap Rate 1. Always check that the part number on the reel or tray of components is correct! 2. Avoid rework! 3. Avoid expensive scrap!
SW 703 Prepare the line – Important Factors - Most Important Factors for Prepare the Line :
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SW 703 Prepare the line – Impor tant Factors
DPM = Defects per million – a measure of how many parts are misplaced or not placed at all.
MFR = Material Failure Rate – how many PCBs fail at test.
Most Important Factors – DPM, MFR, Scrap Rate
Results – Lower Quality, Rework Costs, Higher Production Costs
Tasks that can cause quality Problems
Loading incorrect parts onto feeders / MTC
Operations Success Measures
Number of incorrect parts loaded / product start up.
Operations Target
Zero incorrect components loaded!
SW 703 Prepare the line – Important Factors - DPM,MFR, Scrap Rate :
120
DPM,MFR, Scrap Rate
1. Always check that the part number on the reel or tray
of components is correct!
2. Avoid rework!
3. Avoid expensive scrap!
SW 703 Prepare the line – Important Factors - Important Factors for Prepare the Line :
121
Important Factors for Prepare the Line
Most Important Factors – Reject Rate
Results – Higher Production Costs
Tasks that can cause a high Reject Rate
Incorrect Pick up Position set at feeder or MTC
Incorrect setting of feeder pitch.
Incorrect pick up angle programmed for feeder or MTC
Operations Success Measures
Reject Rate levels after a product starts to run at the line.
Number of machine stops after the start of production due to feeder jams or errors.
Operations Target
Reject Rate remains low and stable after production start up!
Zero machine stops due to feeder jams or errors!