Production and Operations Management: Manufacturing and Services

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Coordinated Product and Process

Design

Class 12: 4/13/10

A G ENERAL F RAMEWORK

Two distinct chains in organizations:

The supply chain which focuses on the flow of physical products from suppliers through manufacturing and distribution all the way to retail outlets and customers, and

The development chain which focuses on new product introduction and involves product architecture, make/buy decisions, earlier supplier involvement, strategic partnering, supplier footprint and supply contracts.

K

EY

C

HARACTERISTICS OF

S

UPPLY

C

HAIN

Demand uncertainty and variability, in particular, the bullwhip effect

Economies of scale in production and transportation

Lead time, in particular due to globalization

K

EY

C

HARACTERISTICS OF

D

EVELOPMENT

C

HAIN

Technology clock speed

Speed by which technology changes in a particular industry

Make/Buy decisions

Decisions on what to make internally and what to buy from outside suppliers

Product structure

Level of modularity or integrality in a product

Modular product

 assembled from a variety of modules

 each module may have several options

Bulk of manufacturing can be completed before the selection of modules and assembly into the final product takes place

I NTERACTION BETWEEN THE T WO C HAINS

Fisher’s concept of Innovative and Functional Products

Functional products characterized by:

 slow technology clock speed, low product variety, and typically low profit margins

Innovative products characterized by:

 fast technology clock speed and short product life cycle, high product variety, and relatively high margins.

W

HAT

I

S THE

A

PPROPRIATE

S

UPPLY

C

HAIN

S

TRATEGY AND

P

RODUCT

D

ESIGN

S

TRATEGY FOR

E

ACH

P

RODUCT

T

YPE

?

Each requires a different supply chain strategy

Development chain has to deal with the differing level of demand uncertainty

F RAMEWORK FOR M ATCHING P RODUCT

D ESIGN AND S UPPLY C HAIN S TRATEGIES

The impact of demand uncertainty and product introduction frequency on product design and supply chain strategy

D ESIGN FOR L OGISTICS (DFL)

Product and process design that help to control logistics costs and increase service levels

Economic packaging and transportation

Concurrent and parallel processing

Standardization

E CONOMIC T RANSPORTATION AND

S TORAGE

Design products so that they can be efficiently packed and stored

Design packaging so that products can be consolidated at cross docking points

Design products to efficiently utilize retail space

E XAMPLES

Ikea

World’s largest furniture retailer

131 stores in 21 countries

Large stores, centralized manufacturing, compactly and efficiently packed products

Rubbermaid

Clear Classic food containers - designed to fit 14x14” Wal-

Mart shelves

F INAL P ACKAGING

Delay until as late as possible

Repackaging at the cross-docking point is common for many products

C ONCURRENT /P ARALLEL P ROCESSING

Objective is to minimize lead times

Achieved by redesigning products so that several manufacturing steps can take place in parallel

Modularity/Decoupling is key to implementation

Enables different inventory levels for different parts

T RADITIONAL M ANUFACTURING

Set schedules as early as possible

Use large lot sizes to make efficient use of equipment and minimize costs

Large centralized facilities take advantage of economies of scale

S TANDARDIZATION

Recall: aggregate demand information is more reliable

We can have better forecasts for a product family

(rather than a specific product or style)

How to make use of aggregate data ?

Designing the product and manufacturing processes so that decisions about which specific product is being manufactured (differentiation) can be delayed until after manufacturing is under way

M ODULARITY IN P RODUCT AND P ROCESS

Modular Product:

Can be made by appropriately combining the different modules

It entails providing customers a number of options for each module

Modular Process:

Each product undergo a discrete set of operations making it possible to store inventory in semifinished form

Products differ from each other in terms of the subset of operations that are performed on them

M ODULARITY IN P RODUCT AND P ROCESS

Semiconductor wafer fabrication is modular since the type of chip produced depends on the unique set of operations performed

Oil refining is not modular since it is continuous and inventory storage of semi-finished product is difficult

M ODULARITY IN P RODUCT AND P ROCESS

Modular products are not always made from modular processes

Bio-tech and pharmaceutical industries make modular products but use non-modular processes; many products are made by varying the mix of a small number of ingredients

S

WAMINATHAN

S

F

OUR

A

PPROACHES TO

S

TANDARDIZATION

Part standardization

Process standardization

Product standardization

Procurement standardization

P ART S TANDARDIZATION

Common parts used across many products.

Common parts reduce:

 inventories due to risk pooling costs due to economies of scale

Excessive part commonality can reduce product differentiation

May be necessary to redesign product lines or families to achieve commonality

P ROCESS S TANDARDIZATION

Standardize as much of the process as possible for different products

Customizing the products as late as possible

Decisions about specific product to be manufactured is delayed until after manufacturing is under way

Starts by making a generic or family product

Differentiate later into a specific end-product

Postponement or delayed product differentiation

D ELAYED D IFFERENTIATION

May be necessary to redesign products specifically for delayed differentiation

May be necessary to resequence the manufacturing process to take advantage of process standardization

Resequencing

 modify the order of product manufacturing steps resequenced operations result in the differentiation of specific items or products are postponed as much as possible

P OSTPONEMENT

Point of differentiation

B ENETTON B ACKGROUND

A world leader in knitwear

Massive volume, many stores

Logistics

Large, flexible production network

Many independent subcontractors

Subcontractors responsible for product movement

Retailers

Many, small stores with limited storage

B ENETTON S UPPLY C YCLE

Primary collection in stores in January

Final designs in March of previous year

Store owners place firm orders through July

Production starts in July based on first 10% of orders

August - December stores adjust orders (colors)

80%-90% of items in store for January sales

Mini collection based on customer requests designed in January for Spring sales

To refill hot selling items

Late orders as items sell out

Delivery promised in less than five weeks

B ENETTON F LEXIBILITY

Business goals

Increase sales of fashion items

Continue to expand sales network

Minimize costs

Flexibility important in achieving these goals

Hard to predict what items, colors, etc. will sell

Customers make requests once items are in stores

Small stores may need frequent replenishments

I T I S H ARD TO B E F LEXIBLE W HEN ...

Lead times are long

Retailers are committed to purchasing early orders

Purchasing plans for raw materials are based upon extrapolating from 10% of the orders

B ENETTON

O LD M ANUFACTURING P ROCESS

Spin or Purchase Yarn

Dye Yarn

Finish Yarn

Manufacture Garment Parts

Join Parts

B ENETTON

N EW M ANUFACTURING P ROCESS

Spin or Purchase Yarn

Manufacture Garment Parts

Join Parts

Dye Garment

Finish Garment

This step is postponed

B ENETTON P OSTPONEMENT

Why the change?

The change enables Benetton to start manufacturing before color choices are made

What does the change result in?

Delayed forecasts of specific colors

Still use aggregate forecasts to start manufacturing early

React to customer demand and suggestions

Issues with postponement

Costs are 10% higher for manufacturing

New processes had to be developed

New equipment had to be purchased

P RODUCT S TANDARDIZATION

Downward Substitution

Produce only a subset of products (because producing each one incurs high setup cost)

Guide customers to existing products

Substitute products with higher feature set for those with lower feature set

Which products to offer, how much to keep, how to optimally substitute ?

P ROCUREMENT S TANDARDIZATION

Consider a large semiconductor manufacturer

The wafer fabrication facility produces highly customized integrated circuits

Processing equipment that manufactures these wafers are very expensive with long lead time and are made to order

Although there is a degree of variety at the final product level, each wafer has to undergo a common set of operations

The firm reduces risk of investing in the wrong equipment by pooling demand across a variety of products

O

PERATIONAL

S

TRATEGIES FOR

S

TANDARDIZATION

Process

Nonmodular

Parts standardization

Modular

Process standardization

Product

Modular

Nonmodular Product standardization Procurement standardization

S

ELECTING THE

S

TANDARDIZATION

S

TRATEGY

If process and product are modular, process standardization will help to maximize effective forecast accuracy and minimize inventory costs.

If the product is modular, but the process is not, it is not possible to delay differentiation. However, part standardization is likely to be effective.

If the process is modular but the product is not, procurement standardization may decrease equipment expenses.

If neither the process nor the product is modular, some benefits may still result from focusing on product standardization.

P USH -P ULL B OUNDARY

Pull-based systems typically lead to:

 reduction in supply chain lead times, inventory levels, and system costs

 making it easier to manage system resources

Not always practical to implement a pullbased system throughout the entire supply chain

Lead times may be too long

May be necessary to have economies of scale in production or transportation.

Standardization strategies can combine push and pull systems

Portion of the supply chain prior to product differentiation is typically a push-based supply chain

Portion of the supply chain starting from the time of differentiation is a pull-based supply chain.

S

UPPLIER

I

NTEGRATION INTO

N

EW

P

RODUCT

D

EVELOPMENT

Traditionally suppliers have been selected after design of product or components

However, firms often realize tremendous benefits from involving suppliers in the design process.

Benefits include:

 a decline in purchased material costs an increase in purchased material quality a decline in development time and cost an increase in final product technology levels.

T HE S PECTRUM OF S UPPLIER I NTEGRATION

No single “appropriate level” of supplier integration

None

Supplier is not involved in design.

Materials/subassemblies supplied as per customer specifications/design

White box

Informal level of integration

Buyer “consults” with the supplier informally when designing products and specifications

No formal collaboration

Grey box

Formal supplier integration

Collaborative teams between buyer’s and supplier’s engineers

Joint development

Black box

Buyer gives the supplier a set of interface requirements

Supplier independently designs and develops the required component

A

PPROPRIATE

L

EVEL

D

EPENDS ON

THE

S

ITUATION

Process Steps to follow:

Determine internal core competencies.

Determine current and future new product developments.

Identify external development and manufacturing needs.

A PPROPRIATE L EVEL D EPENDS ON THE

S ITUATION

Black Box

If future products have components that require expertise that the firm does not possess, and development of these components can be separated from other phases of product development, then taking

Grey Box

If separation is not possible

White Box

If buyer has some design expertise but wants to ensure that supplier can adequately manufacture the component

K EYS TO S UPPLIER I NTEGRATION

Making the relationship a success:

Select suppliers and build relationships with them

Align objectives with selected suppliers

Which suppliers can be integrated?

Capability to participate in the design process

Willingness to participate in the design process

Ability to reach agreements on intellectual property and confidentiality issues.

Ability to commit sufficient personnel and time to the process.

Co-locating personnel if appropriate

Sufficient resources to commit to the supplier integration process.

M ASS C USTOMIZATION

Evolved from the two prevailing manufacturing paradigms of the 20th century

Craft production and mass production.

Mass production

 efficient production of a large quantity of a small variety of goods

High priority on automating and measuring tasks

Mechanistic organizations with rigid controls

Craft production

 involves highly skilled and flexible workers

Often craftsmen

Organic organizations which are flexible and changing

A BSENCE OF T RADE -O FFS

Two types meant inherent trade-offs

Low-cost, low-variety strategy may be appropriate for some products

For others, a higher-cost, higher-variety, more adaptable strategy was more effective

Development of mass customization implies it is not always necessary to make this trade-off

Mass customization

 delivery of a wide variety of customized goods or services quickly and efficiently at low cost captures many of the advantages of both the mass production and craft production systems not appropriate for all products gives firms important competitive advantages helps to drive new business models

M AKING M ASS C USTOMIZATION W ORK

Highly skilled and autonomous workers, processes, and modular units

Managers can coordinate and reconfigure these modules to meet specific customer requests and demands

K EY A TTRIBUTES

Instantaneous

Modules and processes must be linked together very quickly

Allows rapid response to various customer demands.

Costless

Linkages must add little if any cost to the processes

Allows mass customization to be a low-cost alternative.

Seamless

Linkages and individual modules should be invisible to the customer

Frictionless

Networks or collections of modules must be formed with little overhead.

Communication must work instantly

M ASS C USTOMIZATION AND SCM

Many of the advanced SCM approaches and techniques essential if mass customization is to be successfully implemented

IT critical for effective SCM is also critical for coordinating different modules

Concepts like strategic partnerships and supplier integration essential for the success of mass customization.

Postponement can play a key role in implementing mass customization

SUMMARY

Design for logistics concepts

Efficient packaging and storage

Certain manufacturing steps can be completed in parallel

Standardization

Integrating suppliers into the product design and development process

Advanced supply chain management facilitating mass customization

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