(a) Define what is meant by "selective assembly" and briefly explain why this method is used in manufacturing and give one product example where selective assembly is used. The following sample of 20 pins, each 30 mm long were produced with a specified diameter of 8.5 mm +/- 0.5 mm. Diameter Range (mm) 8.0 8.2 8.2 8.4 8.4-8.6 8.6- 8.8 Quantity 1 4 6. 6. b) Show a suitable method of measuring the diameter of the parts, illustrate your answer with your own sketch. State the resolution and accuracy of the method selected. C) Find the mean diameter and standard deviation. Confirm if the manufacturing process is "capable" by calculating the Process Capability Index Cp.

Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Jack Erjavec, Rob Thompson
Chapter44: Four- And All-wheel Drive
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3.
(a) Define what is meant by "selective assembly" and briefly explain
why this method is used in manufacturing and give one product
example where selective assembly is used.
The following sample of 20 pins, each 30 mm long were produced with
a specified diameter of 8.5 mm +/- 0.5 mm.
Diameter Range (mm)
8.0 8.2
8.2 8.4
8.4-8.6
8.6-8.8
Quantity
b) Show a suitable method of measuring the diameter of the parts,
illustrate your answer with your own sketch. State the resolution
and accuracy of the method selected.
c) Find the mean diameter and standard deviation. Confirm if the
manufacturing process is "capable" by calculating the Process
Capability Index Cp.
d) If the Machine Capability Index Cm was used instead, would this
indicate that a change in manufacturing method was required,
quantify your answer.
1496
Transcribed Image Text:npatibinty VIode Word Search Design Layout References Mailings Review View Help 3. (a) Define what is meant by "selective assembly" and briefly explain why this method is used in manufacturing and give one product example where selective assembly is used. The following sample of 20 pins, each 30 mm long were produced with a specified diameter of 8.5 mm +/- 0.5 mm. Diameter Range (mm) 8.0 8.2 8.2 8.4 8.4-8.6 8.6-8.8 Quantity b) Show a suitable method of measuring the diameter of the parts, illustrate your answer with your own sketch. State the resolution and accuracy of the method selected. c) Find the mean diameter and standard deviation. Confirm if the manufacturing process is "capable" by calculating the Process Capability Index Cp. d) If the Machine Capability Index Cm was used instead, would this indicate that a change in manufacturing method was required, quantify your answer. 1496
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