statistical process control (SPC), what is SPC, SPC kaise banate hain

company name :xxxxxxx                                         STATISTICAL PROCESS CONTROL STUDY   FORMAT NO.:  F-1/8.1.1 DATE : 02/01/2019
APPROVED CHECKED PREPARED
DHARAM SINGH SHIVAM ABHISHEK SNGH

PART NAME: xxxxxxx QUALITY CHARACTERISTICS ID INSTRUMENT NAME: Vernier Caliper MACHINE NAME TROUB SUPPLIER NAME OR MACHINING SECTION NAME
PART No. : 58695-460-OA-ID STANDARD 8.0 +0.050/+0.150 OPERATION: ID TURNNING LEAST COUNT 0.01 DOCUMENT CONTROL NO. :
DATA COLLECTION: -
DATE OF MEASUREMENT 06-Sep-18 06-Sep-18 06-Sep-18 06-Sep-18 06-Sep-18 06-Sep-18 06-Sep-18 06-Sep-18 06-Sep-18 SAMPLING RATIO
MEASUREMENT TIME ALL DIMENSIONS ARE IN MM UP TO 5 SAMPLES ' D3' VALUE = 0
GROUP NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 USL 8.1500 SAMPLE d2 A2 D4
MEASURED VALUE X1 8.070 8.070 8.080 8.088 8.080 8.090 8.088 8.070 8.080 8.088 8.070 8.090 8.080 8.088 8.090 8.080 8.070 8.080 8.090 8.070 1 1.123 2.560 3.270
X2 8.070 8.090 8.070 8.087 8.080 8.080 8.087 8.090 8.090 8.087 8.090 8.088 8.090 8.087 8.088 8.070 8.090 8.070 8.080 8.090 2 1.128 1.880 3.270
X3 8.080 8.080 8.088 8.088 8.080 8.088 8.088 8.080 8.088 8.088 8.080 8.087 8.090 8.088 8.088 8.088 8.080 8.090 8.070 8.080 LSL 8.0500 3 1.693 1.020 2.570
X4 8.070 8.090 8.087 8.070 8.080 8.087 8.090 8.090 8.087 8.090 8.090 8.088 8.090 8.070 8.087 8.087 8.090 8.070 8.090 8.070 4 2.059 0.800 2.280
X5 8.070 8.070 8.088 8.090 8.070 8.088 8.070 8.070 8.088 8.070 8.070 8.080 8.080 8.090 8.088 8.088 8.070 8.090 8.080 8.090 5 2.326 0.590 2.110

FOR HISTOGRAM :-
XLARGE 8.080 8.090 8.088 8.090 8.080 8.090 8.090 8.090 8.090 8.090 8.090 8.090 8.090 8.090 8.090 8.088 8.090 8.090 8.090 8.090 Xmax.= 8.090 NO.OF NON CONFORMING PART = 0 NOS.
XSMALL 8.070 8.070 8.070 8.070 8.070 8.080 8.070 8.070 8.080 8.070 8.070 8.080 8.080 8.070 8.087 8.070 8.070 8.070 8.070 8.070 Xmin.= 8.070 0
RANGE 0.010 0.020 0.018 0.020 0.010 0.010 0.020 0.020 0.010 0.020 0.020 0.010 0.010 0.020 0.003 0.018 0.020 0.020 0.020 0.020 R 0.01595 NO. OF PARTS ABOVE U.C.L. = 0 NOS.
AVG. 8.0720 8.0800 8.0826 8.0846 8.0780 8.0866 8.0846 8.0800 8.0866 8.0846 8.0800 8.0866 8.0860 8.0846 8.0882 8.0826 8.0800 8.0800 8.0820 8.0800 X 8.0825 NO. OF PARTS BELOW L.C.L. = 24 NOS.
Process Width ( R ) = 0.0200 Specification Width ( S )  = 0.1000 No. of Class Intervals = 1 + 3.222 × log10 N  = 7.444 Shift Of ' X ' from ' D '  = -0.0175 INTERVAL FREQ. CU. FREQ.
Design Centre ( D ) = 8.1000 Interval ( C )  =  ( R + L.C.) / k  = 0.0043 Selecting no. of classes       ( k )      = 7 Lower Class Limit    = 8.0650 8.0650 8.0693 0 0
Starting Point         = 8.0700 No. of readings ( N )  = 100 Index ( K )     =    R x ( D-R ) / S      = 1.616 8.0693 8.0736 24 24
8.0736 8.0779 0 24
U.C.L. 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0919 8.0779 8.0821 20 44
L.C.L. 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0731 8.0821 8.0864 0 44
U.C.L. 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 0.0337 8.0864 8.0907 56 100
L.C.L. 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 8.0907 8.0950 0 100
X-BAR 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 8.0825 U.C.L.X = X + A2×R 8.0919
R-BAR 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 0.0159 L.C.L.X = X - A2×R 8.0731
U.C.L.R = R x D4 0.0337
L.C.L.R  = R x D3 0.0000
Std.Dev.'σ'= R / d2 0.0069
Cp = (S/6σ) 2.43
REMARKS: Cpk U=(USL-X)/3σ 3.28
Cpk L=(X-LSL)/3σ 1.58
ACTUAL Cpk 1.58

Comments

Post a Comment

Popular posts from this blog

what is initial process control ,and what is the procedure of IPC. HOW MAKE THE IPC PROCEDURE IN AUTOMOTIVE INDUSTRIES.

1.        INITIAL PROCESS CONTROL: iiii             Purpose: To establish a procedure for Initial Supply Control and to ensure that the           controls required for Initial supplies in the case of New Product, Change in existing            product and process are established, implemented and maintained at our end and as well      as supplier end. 2.          Scope: Applicable to all New Developments, Engineering Changes, Process Changes, Change in Machineries and Equipments, Start of Manufacturing after a long layoff (More Than Six Months), Raw material Change and Supplier Change. 3.          Responsibility: Head QA & Head Production 4.          System: Sl...
Read more

what is 4 M change , what is the procedure for 4M change

what is the mean of 4M change what is the procedure of 4 M change S.No. Abnormal Situation  Action Taken Activities to be done  Set-Up Approval Retroactive Inspection  Containment Action  Remarks 1 Machine producing defective parts continuously Stop production. Take corrective action and restart the production after set up approval  Yes Yes Yes Check all the parts produced  since last inspection 2 Repeated breakage of production equipment (m/c, Jig & fixture) Stop production. Take corrective action and restart the production after set up approval  Yes Yes Yes Check all the parts produced  since start of production 3 Operator produces defective parts continuously  (Operator carelessness/mistake) Stop production. Educate the operator and restart the production after set up approval  Yes Yes ...
Read more