AOI_RS_v85_en.pdf - 第164页
Chap ter3 SPC User Ma nual AOI Repair Station 160 A: the current data information B: All the data information in real-time C: the detail information of data in real-time. 11 T op Defect b y Placer User may check …
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CP=(USL-LSL)/6σ
σ : Standard Deviation---------- √((nΣx²-(Σx) ²)/(n(n-1)))
USL= Upper Specification Limit
LSL=Lower Specification Limit
Zusl=(Usl-Mean)/3σ
ZLsl=( Mean-LSL)/3σ
USL= Upper Specification Limit
LSL=Lower Specification Limit
Mean=Measured Process Average
Zusl=Capability to meet USL
ZLsl=Capability to meet LSL
σ : Standard Deviation-----------
√((nΣx²-(Σx) ²)/(n(n-1)))
CPK=lesser of Z usl AND Z lsl
10.4 Cpk section
Under Cpk Diagram, user may check the calculated Cpk value in chart.
Green lines are the USL and LSL value of the component, and red lines are
the center control value, USL, and RSL for the 3 sigma
10.5 Barcode Search Section
Under BarcodeSearch. User may search related barcode data in real-time
Chapter3 SPC User Manual
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A: the current data information
B: All the data information in real-time
C: the detail information of data in real-time.
11 Top Defect by Placer
User may check this function to find out the top defect points which may
cause by the placer. The system will compare and analyst defect points
with Placer’s angle data in order to locate the Nozzle or Feeder problem
locations. Please see more details in the following pictures.
Chapter3 SPC User Manual
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Under the X-bar/R chart, AOI Alarm will not only show the cause and
component’s name, but also the placer information as the following picture.
User can check the defect points with (By Defect Type)
or/and (by Comp), and may also select the (By Nozzle)
or/and (By Feeder) as condition. The following chart
represents the defect component ratio of some Nozzle
or/and Feeder problem.