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The Decision-making Design Study on Sewing Machine Design Improvement Based on the QFD

The speed of the new product development in sewing machine industry is slow. Due to the influence of the general situation of sewing industry, time and funds, combined with the uncertainty of the development result, the enterprises find hard to make decision on how and when to develop their new products or improve old ones, though they have eager and strong desire. To meet the very demands, the article introduces the QFD, sets up the house of quality, and ensures the best group of the improvement measures and contribution under the restriction of the cost

From the view of Life Cycle of Engineering Design theory (LCED), modern Design starts on the voice of Customer and ends with the customer’s use and reject. And one of the basic features of modern design is ‘Modern design is driven by customer’.[1] Many studies agree that the early decision-making design, though sharing 8% cost of the whole, determines the effect of 85% cost in the life cycle. Therefore, how to scientifically make the decision in early stage of design is very important. The decision-making design has been studied in the Angle of Knowledge Reasoning by Ma Jun[2], in the view of entropy method by Zhou Chaoyang etc[3]. But their studies both concentrate on evaluation and choice among the design cases, and have not involved the transformation of the VOC to the engineering technological target and the operating specification reasonably and effectively. Zhao Daozhi[4] has made study the decision-making design to decide which engineering method gives priority to meeting the VOC at the constraints of time and cost. But as the major subjects, the different customers’ preference, purpose and focus were ignored in the weighing values of customer’s demands . QFD, used in the article, is a way to convert Voice of Customer (VOC) into Product Quality Characteristics (PQC), to determine the weightings of the each PQC, and to plan these items. [5] Currently, the new product development speed in sewing machine industry is slow. Due to the general situation of sewing industry, time and funds, combined with the uncertainty to the development result, the enterprises find hard to make decision on how and when to promote their new products, though they have eager desire. In view of this atmosphere, the article introduces the QFD, setups the house of quality, and ensures the best group of the improvem .VS Enterprises

the Decision-making Design Study on Sewing Machine Design Improvement Based on the QFD

From the view of Life Cycle of Engineering Design theory (LCED), modern Design starts on the voice of Customer and ends with the customer’s use and reject. And one of the basic features of modern design is ‘Modern design is driven by customer’.[1] Many studies agree that the early decision-making design, though sharing 8% cost of the whole, determines the effect of 85% cost in the life cycle. Therefore, how to scientifically make the decision in early stage of design is very important. The decision-making design has been studied in the Angle of Knowledge Reasoning by Ma Jun[2], in the view of entropy method by Zhou Chaoyang etc[3]. But their studies both concentrate on evaluation and choice among the design cases, and have not involved the transformation of the VOC to the engineering technological target and the operating specification reasonably and effectively. Zhao Daozhi[4] has made study the decision-making design to decide which engineering method gives priority to meeting the VOC at the constraints of time and cost. But as the major subjects, the different customers’ preference, purpose and focus were ignored in the weighing values of customer’s demands . QFD, used in the article, is a way to convert Voice of Customer (VOC) into Product Quality Characteristics (PQC), to determine the weightings of the each PQC, and to plan these items. [5] Currently, the new product development speed in sewing machine industry is slow. Due to the general situation of sewing industry, time and funds, combined with the uncertainty to the development result, the enterprises find hard to make decision on how and when to promote their new products, though they have eager desire. In view of this atmosphere, the article introduces the QFD, setups the house of quality, and ensures the best group of the improvemThe study mainly focuses on helping enterprises to select suitable measure group to meet the requirement of VOC under the cost restriction. Though the paper takes the example of sewing enterprises, the research concept and methods can also be applied to other industrial enterprises.

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