By

C.S.Gowsick(16MI31)

Computer integrated manufacturing

Department of mechanical engineering

PSG college of technology

AGENDA

Introduction

Concurrent Engineering

Sequential Engineering Vs Concurrent Engineering

Tools For Concurrent Engineering

DFMA-design For Manufacturing/Assembly

DFM-design For Manufacturing

DFA-design For Assembly

Concurrent Engineering Tools

Conclusion

Reference

INTRODUCTION

Market share and profitability are the major determinants of the success

of any organization.

The factors that influence and improve the competitive edge of a

company are unit cost of products, quality, and lead time.

Concurrent engineering (CE) has emerged as discipline to help achieve

the objectives of reduced cost, better quality, and improved delivery

performance

CE means that the design and development of the product, the

associated manufacturing equipment and processes, and the repair tools

and processes are handled concurrently

CONCURRENT ENGINEERING

Concurrent engineering, also known as simultaneous engineering, is a

method of designing and developing products, in which the different

stages run simultaneously, rather than consecutively. It decreases

product development time and also the time to market, leading to

improved productivity and reduced costs.

SEQUENTIAL ENGINEERING VS

CONCURRENT ENGINEERING

Fig.1.Sequential Engineering

SEQUENTIAL ENGINEERING VS

CONCURRENT ENGINEERING

Fig.2.Concurrent engineering

TOOLS FOR CONCURRENT ENGINEERING Design for manufacturing guidelines

Design science

Design for assembly

The Taguchi method for robust design

Manufacturing process design rules

Computer-aided DFM

Group technology

Failure-mode and effects analysis

Value engineering

Initially, two of those can be outstand here: Design For Manufacturing (DFM) and

Design For Assembly (DFA)

DFMA-DESIGN FOR

MANUFACTURING/ASSEMBLY The core of any system of Design for Manufacturing (DFM) or Design for

Assembly (DFA) is a set of rules to be followed aiming at design efficiency in

terms of its manufacturing engineering.

DFMA-DESIGN FOR

MANUFACTURING/ASSEMBLY

DFM-DESIGN FOR MANUFACTURING

DFM (Design for Manufacturability) is a set of methods and tools that support

concurrent engineering.

Through the use of the DFM concepts, designers and engineers can attain main

target to satisfy the customer’s requirements in terms of functionality,

performance, style and quality at low cost.

Each DFM tool focuses on a manufacture specialty or on a manufacture

processes family. DFM-Assembly (DFA or Design for Assembly) is indicated to

product architecture and assembly

DFM BENEFITS

Simpler fabrication and assembly

Improved ergonomics

Reduced rework

Reduced mass

Improved serviceability

Better quality

Reduced logistic time

Reduced time to market launching;

Less production problems

Reduced program budget

DFA-DESIGN FOR ASSEMBLY

DFA (Design for Assembly) is a DFM specialty; it is a structured method to

improve product components assembling. Both, DFM and DFA are essentials

applications during product design and are also called DFMA (Design for

Manufacturing and Assembly). The following criteria are considered in a DFA

1. Reduce and optimize part counts and types.

2.Utilize optimum attachment methods.

3.Eliminate the need for adjustments.

4.Design parts so that they are easy to self-align and locate.

5.Minimize the number of tools required.

DFA-DESIGN FOR ASSEMBLY

DFA-DESIGN FOR ASSEMBLY

CONCURRENT ENGINEERING TOOLS

CONCLUSION

Using a DFMA tool in concurrent engineering has a benefit of:

1. Reduce time to market

2.Reduce press shop machinery and die stamping investments

3.Reduce indirect cost.

4. Improved racks logistic

5. Reduced setup and increased productivity

Implementation of concurrent engineering in design and product development

should be done for the benefit of industries

REFERENCE

Concurrent Engineering And DFMA Approaches On The Development Of

Automotive Panels And Doors By F.Z. Krumenauer A,*, C.T. Matayoshi A,

I.B. Da Silva B, M.S. Filho B, G.F. Batalha B

A Study On Concurrent Engineering-based Design And Product Development

By Sandip Basu, Nabarun Biswas, Supriya Naha Biswas And Sweta Sarkar

THANK YOU