This chapter begins with overview of quality concept and six sigma process.
1.1 Quality
What is quality?
In manufacturing, a measure of excellence or a state of being free from defects, deficiencies and significant variations is known as quality.
Quality is a perceptual, conditional, and somewhat subjective attribute and may be understood
Sigma is a Greek term .It is used in statistics to represent standard deviation from mean value, an indicator of the degree of variation in a set of a process.
Sigma measures how far a given process deviates from perfection. Higher sigma capability, better performance. Six Sigma emerged as a natural evolution in business to increase profit by eliminating defects. The Current business environment now …show more content…
(b)How should we set the tolerance limits at 2±0.02 cm?
Solution:
(a)P (1.98 ≤ X ≤2.02) = ϕ((2.02-2.00)/0.008) - ϕ((1.98-2.00)/0008) =ϕ (2.5) – ϕ (-2.5) =0.9938 - (1 - 0.9938) =0.9876=98.76%
(b) 0.96=P (2-k ≤X≤ 2+k) or 0.98=P (X≤2+k) 0.98=ϕ((2+k-2)/0.008) so (2+k-2)/0.008 = 2.054 so it gives k=0.0164
2.1 Six Sigma: a goal-theoretic …show more content…
After reviewing the goal theory literature, these concepts, when applied to Six Sigma, suggest some propositions for future research. This paper can help serve as a foundation for developing scientific knowledge about Six Sigma. [1]
2.2 Application of six-sigma in educational quality management
According to Javad Mehrabi, combines the lessons learnt from successful projects and considers the forthcoming improvements of six sigma approach. Effective principals and activities of Six Sigma will be successful through the improvement and constant sequence of organizational culture.[2]
Criticism for six sigma: Lack of originality Role of consultants Potential negative effects Over-reliance on statistical tools Stifling creativity in research environments 1.5 sigma shift
Step by step processes of bearing cage production. Blanking: It is a process of cutting or shearing a blank from sheet or strip material. In blanking the punched out piece (blank) is used. The sheet metal from which the blank is to be cut is properly located over the die and a punch lowered into it to produce the required cut. In plant roll or strip of cold rolled steel is fed to the press machine and with the help of proper die and punch, circular blank is
1.1 Quality
What is quality?
In manufacturing, a measure of excellence or a state of being free from defects, deficiencies and significant variations is known as quality.
Quality is a perceptual, conditional, and somewhat subjective attribute and may be understood
Sigma is a Greek term .It is used in statistics to represent standard deviation from mean value, an indicator of the degree of variation in a set of a process.
Sigma measures how far a given process deviates from perfection. Higher sigma capability, better performance. Six Sigma emerged as a natural evolution in business to increase profit by eliminating defects. The Current business environment now …show more content…
(b)How should we set the tolerance limits at 2±0.02 cm?
Solution:
(a)P (1.98 ≤ X ≤2.02) = ϕ((2.02-2.00)/0.008) - ϕ((1.98-2.00)/0008) =ϕ (2.5) – ϕ (-2.5) =0.9938 - (1 - 0.9938) =0.9876=98.76%
(b) 0.96=P (2-k ≤X≤ 2+k) or 0.98=P (X≤2+k) 0.98=ϕ((2+k-2)/0.008) so (2+k-2)/0.008 = 2.054 so it gives k=0.0164
2.1 Six Sigma: a goal-theoretic …show more content…
After reviewing the goal theory literature, these concepts, when applied to Six Sigma, suggest some propositions for future research. This paper can help serve as a foundation for developing scientific knowledge about Six Sigma. [1]
2.2 Application of six-sigma in educational quality management
According to Javad Mehrabi, combines the lessons learnt from successful projects and considers the forthcoming improvements of six sigma approach. Effective principals and activities of Six Sigma will be successful through the improvement and constant sequence of organizational culture.[2]
Criticism for six sigma: Lack of originality Role of consultants Potential negative effects Over-reliance on statistical tools Stifling creativity in research environments 1.5 sigma shift
Step by step processes of bearing cage production. Blanking: It is a process of cutting or shearing a blank from sheet or strip material. In blanking the punched out piece (blank) is used. The sheet metal from which the blank is to be cut is properly located over the die and a punch lowered into it to produce the required cut. In plant roll or strip of cold rolled steel is fed to the press machine and with the help of proper die and punch, circular blank is