Question: VARIABLES CONTROL CHART (X & R) PART NO CHART NO PART NAME PRODUCT OPERATION PROCESS) SPECIFICATION LIMITS HOLE SPACING 68.7.20mm OPERATOR MACHINE GAUGE CNC MILLING

VARIABLES CONTROL CHART (X & R) PART NO CHART NO

VARIABLES CONTROL CHART (X & R) PART NO CHART NO PART NAME PRODUCT OPERATION PROCESS) SPECIFICATION LIMITS HOLE SPACING 68.7.20mm OPERATOR MACHINE GAUGE CNC MILLING MACHINE #18 UNIT OF VEASURE ZERO EQUALS 0.01mm DATE TODAYS DATE TIME 8:00 8:15 8:30 8:45 9:00 9:15 9:30 9:45 10:00 10:15 10:30 10:45 11:00 11:15 11:30 11:45 12:00 12:15 12:30 12:45 1 65 75 75 70 60 75 65 80 85 90 60 60 65 70 65 75 75 75 65 60 2 70 85 80 75 75 80 80 80 70 60 80 70 70 65 60 3 65 75 80 65 75 65 85 80 85 80 70 80 70 75 85 75 85 60 85 65 4 85 70 85 85 75 85 60 65 75 75 60 70 75 80 70 70 65 60 5 65 75 80 70 70 75 80 70 85 65 75 80 75 60 65 80 60 70 65 SUM PS) 385 380 375 365 35 390 375 380 YIO 340 360 335 36 355 375 380 335 350 310 AVERAGE, X 20.22 26.75 23.23.28.25 26 8268 1267 72 21 75 76 67 70 62 RANGE, R 20 20 15 20 25 20 20 20 2015 S 20 20 5 25 15 15 15 20 5 NOTES 1 4 6 7 8 9 10 11 12 13 14 17 18 19 21 22 23 24 25 75 75 70 70 70 SAMPLE MEASUREMENTS 65 75 85 2 3 5 un 16 20 AVERAGES RANGES A2 X AND R CHART WORK SHEET Factors For Control Limits SAMPLE X CHART R CHART FACTORS SIZE FACTOR n D3 04 2 1.88 0.00 3.27 3 1.02 0.00 2.57 4 0.73 0.00 2.28 5 0.58 0.00 2.11 0.48 0.00 200 0.42 0.08 1.92 8 0.37 0.14 1.86 9 0.34 0.18 1.82 10 0.31 0.22 1.78 AVERAGES GRAND AVERAGE, - EX Eor's No. of X's RANGE AVERAGER - ER Sum of R's K No. of R's CONTROL LIMITS AVERAGE UCL, X+ A, x R) LCL --A, UCL RANGE UCL, DAR UCL Figure 1-5. Typical X and R Chart Work Sheet Range Chart is in Control X Chart is in Control (Yes/No) (Yes/No)

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