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Book Chapter
Thread Rolling
Available to PurchaseSeries: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004012
EISBN: 978-1-62708-185-6
... Abstract Thread rolling is a cold-forming process for producing threads or other helical or annular forms by rolling the impression of hardened steel dies into the surface of a cylindrical or conical blank. Methods that use cylindrical dies are classified as radial infeed, tangential feed...
Abstract
Thread rolling is a cold-forming process for producing threads or other helical or annular forms by rolling the impression of hardened steel dies into the surface of a cylindrical or conical blank. Methods that use cylindrical dies are classified as radial infeed, tangential feed, through feed, planetary, and internal. This article focuses on the capabilities, limitations, and machines used for these methods. It describes the three characteristics, such as rollability, flaking, and seaming, used in evaluating and selecting metals for thread rolling. The article explores the factors affecting die life and explains the effect of thread form on processing. It provides information on various fluids used in thread rolling to cool the dies and the work and to improve the finish on the rolled products. The article provides a comparison between thread rolling and cutting, as well as between thread rolling and grinding.
Book Chapter
Thread Rolling
Available to PurchaseBook: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002142
EISBN: 978-1-62708-188-7
... Abstract This article discusses the three characteristics that are important in evaluating and selecting metals for thread rolling, namely, rollability, flaking, and seaming. It reviews the capabilities and limitations of flat-die rolling, radial-infeed rolling, tangential rolling, through-feed...
Abstract
This article discusses the three characteristics that are important in evaluating and selecting metals for thread rolling, namely, rollability, flaking, and seaming. It reviews the capabilities and limitations of flat-die rolling, radial-infeed rolling, tangential rolling, through-feed rolling, planetary thread rolling, continuous rolling, and internal thread rolling, as well as the rolling machines and dies used. The article describes the factors affecting die life and provides information on radial die load, seam formation, surface finish, and thread dimensions that are affected by the form of the thread. It explains the reasons for using fluids in thread rolling. The article concludes with a comparison of rolling with cutting and grinding.
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Published: 01 January 1989
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Published: 01 January 2005
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Four degrees of susceptibility to seaming during thread rolling. (a) Negati...
Available to PurchasePublished: 01 January 2005
Fig. 5 Four degrees of susceptibility to seaming during thread rolling. (a) Negative susceptibility to form seams. Metal flow adjacent to the die surface is slower than in the middle of the roll form. This is characteristic of metals having a relatively high coefficient of friction
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Image
Published: 01 January 2005
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Published: 01 January 2005
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Operating principle of two types of radial attachments for thread rolling o...
Available to PurchasePublished: 01 January 2005
Fig. 11 Operating principle of two types of radial attachments for thread rolling on lathes and automatic bar machines
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Image
Published: 01 January 2005
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Use of a double-roll attachment for thread rolling near the collet of an au...
Available to PurchasePublished: 01 January 2005
Fig. 13 Use of a double-roll attachment for thread rolling near the collet of an automatic bar machine
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Image
Published: 01 January 2005
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Operating principle of planetary thread rolling. More than one segment die ...
Available to PurchasePublished: 01 January 2005
Fig. 15 Operating principle of planetary thread rolling. More than one segment die may be used.
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Internal thread rolling. (a) With a close-fitting threaded mandrel. (b) Wit...
Available to PurchasePublished: 01 January 2005
Fig. 17 Internal thread rolling. (a) With a close-fitting threaded mandrel. (b) With a threading die that is considerably smaller than the inside diameter being rolled
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Image
Four degrees of susceptibility to seaming during thread rolling. (A) Negati...
Available to PurchasePublished: 01 January 1989
Fig. 5 Four degrees of susceptibility to seaming during thread rolling. (A) Negative susceptibility to form seams. Metal flow adjacent to the die surface is slower than in the middle of the roll form. This is characteristic of metals having a relatively high coefficient of friction
More
Image
Published: 01 January 1989
Image
Published: 01 January 1989
Image
Operating principle of two types of radial attachments for thread rolling o...
Available to PurchasePublished: 01 January 1989
Fig. 11 Operating principle of two types of radial attachments for thread rolling on lathes and automatic bar machines
More
Image
Published: 01 January 1989
Image
Use of a double-roll attachment for thread rolling near the collet of an au...
Available to PurchasePublished: 01 January 1989
Fig. 13 Use of a double-roll attachment for thread rolling near the collet of an automatic bar machine
More
Image
Published: 01 January 1989
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