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Investigating the significance of ze...

Rouse, Sharon.

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Investigating the significance of zero positional tolerance at maximum material condition.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Investigating the significance of zero positional tolerance at maximum material condition./
作者:	Rouse, Sharon.
面頁冊數:	129 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-09(E), Section: A.
Contained By:	Dissertation Abstracts International76-09A(E).
標題:	Management. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3700671
ISBN:	9781321706994

Investigating the significance of zero positional tolerance at maximum material condition.
Rouse, Sharon.

Investigating the significance of zero positional tolerance at maximum material condition. - 129 p.

Source: Dissertation Abstracts International, Volume: 76-09(E), Section: A.

Thesis (Ph.D.)--Indiana State University, 2015.

This item must not be sold to any third party vendors.

Geometric Dimensioning and Tolerancing (GD&T) is a tool used by engineers and manufacturers to describe part features and their allowable variation. It was developed in response to assembly problems of parts manufactured for the war effort during World War II. Zero Positional Tolerance (ZPT) at Maximum Material Condition (MMC) is one of the position tolerancing methods of GD&T. Literature suggests that a proper use of ZPT at MMC will greatly increase the acceptance rate of useable parts, create less waste, give more flexibility to assign tolerance, and therefore reduce cost of manufacture. The intent of this research was to identify and explain why manufacturers are or are not using this method, despite the many purported benefits by consultants and authors of GD&T textbooks. A mixed method research using survey and interviews of users of GD&T was conducted to determine the predominant reasons for the use of ZPT at MMC. The results show that the main reason ZPT at MMC is not more widely used is due to a lack of understanding. Among manufacturers who understand how ZPT at MMC works, the technology is used to reduce manufacturing cost due to scrap and rework.

ISBN: 9781321706994Subjects--Topical Terms:

516664
Management.

Investigating the significance of zero positional tolerance at maximum material condition.
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506 $a This item must not be added to any third party search indexes.
520 $a Geometric Dimensioning and Tolerancing (GD&T) is a tool used by engineers and manufacturers to describe part features and their allowable variation. It was developed in response to assembly problems of parts manufactured for the war effort during World War II. Zero Positional Tolerance (ZPT) at Maximum Material Condition (MMC) is one of the position tolerancing methods of GD&T. Literature suggests that a proper use of ZPT at MMC will greatly increase the acceptance rate of useable parts, create less waste, give more flexibility to assign tolerance, and therefore reduce cost of manufacture. The intent of this research was to identify and explain why manufacturers are or are not using this method, despite the many purported benefits by consultants and authors of GD&T textbooks. A mixed method research using survey and interviews of users of GD&T was conducted to determine the predominant reasons for the use of ZPT at MMC. The results show that the main reason ZPT at MMC is not more widely used is due to a lack of understanding. Among manufacturers who understand how ZPT at MMC works, the technology is used to reduce manufacturing cost due to scrap and rework.
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