13 - Design for manufacture and project management

Question 1

What is quality assurance?

Answer 1

Procedures and policies that ensure the product is made correctly each time

Question 2

What does the use of effective quality assurance procedures do?

Answer 2

Reduce the number of quality control issues and rejects

Question 3

Name 4 project management systems

Answer 3

• Total Quality Management (TQM)
• Scrum
• Six Sigma
• Critical Path Analysis (CPA)

Question 4

Outline Total quality management (TQM)

Answer 4

• Aims to reduce waste and make product right the first time by continuous improvement
• Improves quality assurance by harnessing workforce expertise

Question 5

Outline Scrum as a project management system

Answer 5

• Also known as agile manufacture
• Working in a team to reach goals in short timescale ‘sprints’
• Team goals and feedback is given regularly in order to facilitate quick responses

Question 6

Give a general explanation of Six sigma

Answer 6

• A system for process improvement that reduces defects to few than 3.4 defects in every million
• The procedure monitors, assesses, and improves each stage of design and manufacture
• DMAIC - 5 stages

Question 7

What are 5 stages of the project management system six sigma?

Answer 7

D - Define the issue requiring improvement
M - Measure the extent of the issue
A - Analyse where the measured issues occur
I - Improve by introducing rectification procedures
C - Control the modified procedures through effective quality assurance

Question 8

What is Critical path analysis?

Answer 8

• A method to schedule efficient manufacture
• An order tasks is established
• Parallel processing opportunities can then be exploited for maximum efficiency

Question 9

Outline the use of a go/no go gauge as a specific quality control method

Answer 9

• Check a single measurement for tolerance range
• Will give a pass/fail reading
• Made with minimum and maximum dimensions which makes it easier to use
• Fast process as results do not need to be interpreted

Question 10

Outline the use of laser or probe scanning and measuring as a specific quality control method

Answer 10

• Coordinate measuring machinery is used (CMM)
  -Probe scanner check predetermined measurements against a computer 3D CAD model
• Non contact lasers can scan thousands of reading per second for greater accuracy
• CMM is used to check tooling accuracy for QA tool change procedures

Question 11

Name 2 digital measuring devices

Answer 11

• Vernier calipers
• Micrometers

Question 12

What is the accuracy of vernier calipers?

Answer 12

0.02 mm

Question 13

What is the accuracy of micrometres?

Answer 13

generally 0.01 mm, however some can be 0.001 mm