This document discusses cellular manufacturing and group technology. It defines cellular manufacturing as converting a manufacturing system into cells based on grouping machines and components. It describes the four stages of production flow analysis used to form machine-component groups: machine classification, checking part and production information, factory flow analysis, and machine-component group analysis. Benefits of cellular manufacturing include reduced flow times and inventories. Group technology emphasizes grouping similar parts and machines to standardize processes. Benefits include reductions in engineering costs, production time and defects through standardization.

1. CELLULAR MANUFACTURING
&
GROUP TECHNOLOGY
GROUP NO: 6
Ruchi Gattani
Shoaib Qureshi
Ketan Changani
Hitendrasinh Zala
Vishal Bhatnagar
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2. CELLULAR MANUFACTURING
 It is an application of
group technology in
manufacturing in which
all or a portion of a
firm’s manufacturing
system has been
converted into cells
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3. CELL FORMATION APPROACHES
Machine - Component Group Analysis is
based on production flow analysis
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4. Production flow analysis involves four stages:
Stage 1: Machine classification.
Machines are classified on the basis of
operations that can be performed on them. A
machine type number is assigned to
machines capable of performing similar
operations.
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5. Stage 2:Checking parts list and production
route information.
For each part, information on the operations
to be undertaken and the machines required
to perform each of these operations is
checked thoroughly.
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6. Stage 3: Factory flow analysis.
This involves a micro-level examination of
flow of components through machines. This,
in turn, allows the problem to be decomposed
into a number of machine-component groups.
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7. Stage 4: Machine-component group
analysis.
An intuitive manual method is suggested to
manipulate the matrix to form cells. However,
as the problem size becomes large, the
manual approach does not work. Therefore,
there is a need to develop analytical
approaches to handle large problems
systematically.
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8. EXAMPLE:
Consider a problem of 4 machines and 6 parts.
Try to group them.
Components
Machines 1 2 3 4 5 6
M1 1 1 1
M2 1 1 1
M3 1 1 1
M4 1 1 1
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9. Components
Machines 2 4 6 1 3 5
M1 1 1 1
M2 1 1 1
M3 1 1 1
M4 1 1 1
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10. Benefits of Cellular Manufacturing
1. Flow times are reduced
2. Saves process time
3. Reduction in inventories
4. Rush orders can be produced without much
problems
5. Employees feel empowered & derive job
satisfaction
6. Multiple operations get done in a single cell
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11. Limitations of Cellular Manufacturing
1. Issues like placement of bottleneck
machines are need to be addressed during
cell formation
2. Machines may require their own individual
stocks of materials
3. Inadequacies in employee education,
training & involvement could come in the
way of proper implementation
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12. GROUP TECHNOLOGY
Group technology (GT) is a philosophy that
works in three different ways:
1. By performing similar activities together
2. By standardizing similar tasks
3. By efficiently storing and retrieving
information about recurring problems
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13. Group Technology
 Group technology emphasizes on part families
based on similarities in design attributes and
manufacturing, therefore GT contributes to the
integration of CAD (Computer Aided Design)
and CAM (Computer Aided Manufacturing)
 The group of similar parts is known as part
family and the group of machineries used to
process an individual part family is known as
machine cell
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14. BENEFITS OF GROUP TECHNOLOGY
Group technology is a management strategy to
help eliminate waste caused by duplication of
effort.
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15. BENEFITS OF GROUP TECHNOLOGY
It affects all areas of a company, including:
 engineering
 equipment specification
 facilities planning
 process planning
 production control
 quality control
 tool design
 purchasing
 service
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16. BENEFITS OF GROUP TECHNOLOGY
Some of the well-known tangible and intangible benefits of
implementing GT :
1. Engineering design
• Reduction in new parts design
• Reduction in the number of drawings through
standardization
• Reduction of drafting effort in new shop drawings
• Reduction of number of similar parts, easy retrieval of
similar functional parts, and identification of substitute
parts
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17. BENEFITS OF GROUP TECHNOLOGY
2. Layout planning
 Reduction in production floor space required
 Reduced material-handling effort
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18. BENEFITS OF GROUP TECHNOLOGY
3. Specification of equipment, tools, jigs, and
fixtures
 Standardization of equipment
 Implementation of cellular manufacturing
systems
 Significant reduction in up-front costs
incurred in the release of new parts for
manufacture
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19. BENEFITS OF GROUP TECHNOLOGY
4. Manufacturing: process planning
 Reduction in setup time and production time
 Alternative routing leading to improved part
routing
 Reduction in number of machining operations
and numerical control (NC) programming
time
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20. BENEFITS OF GROUP TECHNOLOGY
5. Manufacturing: production control
 Reduced work-in-process inventory
 Easy identification of bottlenecks
 Improved material flow and reduced warehousing
costs
 Faster response to schedule changes
 Improved usage of jigs, fixtures, pallets, tools,
material handling, and manufacturing equipment
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21. BENEFITS OF GROUP TECHNOLOGY
6. Manufacturing: quality control
 Reduction in number of defects leading to reduced
inspection effort
 Reduced scrap generation
 Better output quality
 Increased accountability of operators and
supervisors responsible for quality production,
making it easier to implement total quality control
concepts.
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22. BENEFITS OF GROUP TECHNOLOGY
7. Purchasing
 Coding of purchased part leading to
standardized rules for purchasing
 Economies in purchasing possible because
of accurate knowledge of raw material
requirements
 Reduced number of part and raw materials
 Simplified vendor evaluation procedures
leading to just-in-time purchasing
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23. BENEFITS OF GROUP TECHNOLOGY
8. Customer service
 Accurate and faster cost estimates
 Efficient spare parts management, leading to
better customer service
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24. Thank You
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