Effects of Limited Capacity on Tolerance Design for Products With N-Type Quality Characteristics

Choi, Ik-Jun; Hong, Sung-Hoon

Journal of Korean Society for Quality Management > Volume 36(2); 2008 > Article

Journal of Korean Society for Quality Management 2008;36(2): 20-.

망목특성을 갖는 제품의 공차 설계에서 제한된 생산 용량의 효과 분석

최익준, 홍성훈

전북대학교 산업정보시스템공학과, 공업기술연구센터

Effects of Limited Capacity on Tolerance Design for Products With N-Type Quality Characteristics

Ik-Jun Choi, Sung-Hoon Hong

Department of Industrial & Information Systems Engineering, Research Center of Industrial Technology, Chonbuk National University

ABSTRACT

Tolerance design has been identified as an important research area and a number of models have been proposed in the literature. This paper investigates the effect of limited capacity on tolerance design for products with nominal-the-best type (N-type) quality characteristics. The model is developed under the assumption that the reprocessed and nonreprocessed items are produced by the same manufacturing process and therefore their quality characteristics are identically and independently distributed. Profit models are constructed which involve four price/cost components; selling price, cost incurred by imperfect quality, reprocessing and quality inspection costs. Methods of finding the optimal tolerance limits are presented, and a numerical example is given. Sensitivity analyses are also performed to study the effect of a process standard deviation on this model.

Key Words: Limited Capacity;N-type Quality Characteristics;Profit Models;Tolerance Design;