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Implementing theory of constraints in a job shop environment

IP.com Disclosure Number: IPCOM000128084D
Original Publication Date: 1999-Dec-31
Included in the Prior Art Database: 2005-Sep-14
Document File: 5 page(s) / 19K

Publishing Venue

Software Patent Institute

Related People

Tagawa, John T: AUTHOR [+3]

Related Documents

http://theses.mit.edu:80/Dienst/UI/2.0/Describe/0018.mit.theses/1999-73: URL

Abstract

The Boeing Company is under performance pressures due to internal process performance and external cost pressures. The response has been a focus on manufacturing fundamentals to meet market demands on schedule and cost. Boeing has utilized Lean Manufacturing as the methodology for improving manufacturing.

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 This record is the front matter from a document that appears on a server at MIT and is used through permission from MIT. See http://theses.mit.edu:80/Dienst/UI/2.0/Describe/0018.mit.theses/1999-73 for copyright details and for the full document in image form.

IMPLEMENTING THEORY OF CONSTRAINTS IN A JOB SHOP ENVIRONMENT

by

John T. Tagawa
B.S. Mechanical Engineering, University of Washington, 1994 Submitted in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering
Sloan School of Management

at the Massachusetts Institute of Technology

May 1999
SIGNATURE OF author: [[signature omitted]]

Sloan School of Management Department of Mechanical Engineering May 10, 1999
CERTIFIED BY: [[SIGNATURE OMITTED]]

Donald Rosenfield

Senior Lecturer, Sloan School of Management Thesis Advisor Stanley Gershwin
Senior Research Scientist, Department of Mechanical Engineering Thesis Advisor ACCEPTED BY: [[SIGNATURE OMITTED]]

Lawrence S. Abeln Director of Master's Program Sloan School of Management Ain A. Sonin
Chairman, Department Committee on Graduate Students Department of Mechanical Engineering
ARCHIVES MASSACHUSETTS INSTITUTE OF TECHNOLOGY LIBRARIES JUN 16 1999

Massachusetts Institute of Technology Page 1 Dec 31, 1999

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Implementing theory of constraints in a job shop environment

IMPLEMENTING THEORY OF CONSTRAINTS IN A JOB SHOP ENVIRONMENT

By John T. Tagawa

Submitted to the Sloan School of Management and the Department of Mechanical Engineering in partial fulfillment of the requirements for the degrees of

Master of Science in Management And Master of Science in Mechanical Engineering

Abstract

The Boeing Company is under performance pressures due to internal process performance and external cost pressures. The response has been a focus on manufacturing fundamentals to meet market demands on schedule and cost. Boeing has utilized Lean Manufacturing as the methodology for improving manufacturing.

This thesis describes an implementation of Theory of Constraints in a job shop environment in a Hoeing component manufacturing shop. Lean Manufacturing and Theory of Constraints are described and compared as methodologies for improving manufacturing systems. This thesis demonstrates that the two methodologies can be integrated in one manufacturing system.

The TOC five-step continuous improvement methodology was utilized in the implementation as a framework for analysis. A process for identifying bottleneck operations in a job shop is detailed. The steps are to identify the process flows, determine constraints within the process flows and release material into the flowpath at the constraint production rate. It is probable that the actual constraint in the system will not be identifiable through data analysis, and methods for determining constraint operations through constraint engineering are described.

An implementation of the drum-buffer-rope material control process is described in this thesis. To enable t...