OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
Top 20 Quality Tools & Techniques: Supplier–Customer Ranking
Ranking
SME (Supplier) a
Large Firm (Customer) b
1-20 =Most to least used 1-20 =Most to least used
1 Brainstorming Process capability
2 Barcharts Just in Time
3 Improve internal Process Productivity improvement
4 Check sheet Lean
5 ISO 9001:2000 Statistical process control
6 Flow charts ISO 9001:2000
7 Lean Total Quality Management
8 Process capability Self assessments
9 Self assessments Material requirements planning
10 Statistical process control Improve internal process
11 Material requirements planning Kanban
12 Plan, do, check, act, cycle Matrix data analysis
13 Matrix data analysis Bar charts
14 Just in time Plan, do, check, act, cycle
15 Kanban Brainstorming
16 Suggestion scheme Flowcharts
17 Tally charts Suggestion schemes
18 Productivity improvement Tally charts
19 Tree diagrams Check sheets
20 Total Quality Management Tree diagrams
[source: Jones, Thomas & Thomas, 2007]
2.1 Seven basic quality tools
• Cause and effect diagram: A Cause-and-Effect Diagram is a tool that helps identify, sort, and display possible
causes of a specific problem or quality characteristic. It graphically illustrates the relationship between a given
outcome and all the factors that influence the outcome. This type of diagram is sometimes called an "Ishikawa
diagram" because it was invented by Kaoru Ishikawa, or a "fishbone diagram" because of the way it looks.
• Check Sheet: The check sheet is a simple document that is used for collecting data in real-time and at the
location where the data is generated. The document is typically a blank form that is designed for the quick, easy,
and efficient recording of the desired information, which can be either quantitative or qualitative.
• Control Chart: A control chart is a statistical tool used to distinguish between variation in a process resulting
from common causes and variation resulting from special causes. It presents a graphic display of process
stability or instability over time.
• Flow chart: The Flow Chart provides a visual representation of the steps in a process or a diagram that uses
graphic symbols to depict the nature and flow of the steps in a process.
• Histogram: One uses this graph to show frequency distributions. It looks very much like a bar chart. This chart
graphs data distributions. If you have numerical, variable, continuous data you can use this chart. The chart
organizes and sorts the data. It shows the data in a pictorial format.
• Pareto Diagram: A Pareto chart, named after Vilfredo Pareto, is a type of chart that contains both bars and
a line graph, where individual values are represented in descending order by bars, and the cumulative total is
represented by the line.
A simple rule, pareto, 20 % issues causes 80 % results.
This means, 80 % if problems come from 20 of reasons.
80 % of results come from 20% of work. 80% of cost comes from 20% of spent area...and so on.
855