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die threading
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Book Chapter
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002143
EISBN: 978-1-62708-188-7
... Abstract This article discusses the types and operations of the most common machines used for die threading. The construction, types, and comparison of solid and self-opening dies are discussed. The article explains the modification of chasers for threading Monel shaft. The principal factors...
Abstract
This article discusses the types and operations of the most common machines used for die threading. The construction, types, and comparison of solid and self-opening dies are discussed. The article explains the modification of chasers for threading Monel shaft. The principal factors that influence thread quality, production rate, and cost in die threading are composition and hardness of work metal; accuracy and finish; thread size; obstacles, such as shoulders or steps; speed; lead control; and cutting fluid. The article examines these factors and describes the tools and cutting fluids used for pipe threading along with the severity of stop lines.
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Published: 01 January 2005
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Published: 01 January 2005
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Published: 01 January 1989
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Published: 01 January 1989
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Published: 01 January 1989
Fig. 22 Die casting threaded in a single-spindle chucking machine with a threading attachment. Dimensions in figure given in inches Details of single-point threading tool Material Carbide Cutting edge angle, degrees 60 Top rake angle, degrees 20 Clearance angle, degrees
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Published: 01 January 2005
Fig. 18 Distribution of die life of 72 dies used for threading low-carbon steel bolts in a 13 mm ( 1 2 in.) boltmaker machine
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Published: 01 January 1989
Fig. 18 Distribution of die life of 72 dies used for threading low-carbon steel bolts in a 13 mm ( 1 2 in.) boltmaker machine
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Published: 01 January 1989
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Published: 01 January 1989
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Published: 01 January 1989
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Published: 30 November 2018
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002187
EISBN: 978-1-62708-188-7
... Abstract This article discusses various machining techniques of zinc alloy die castings. These include turning, boring, drilling, reaming, tapping, die threading, milling, and sawing. In addition, the article describes the factors that influence machinability of the zinc alloy die castings...
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Published: 01 January 2005
Image
Published: 01 January 1989
Book Chapter
Book: 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.
Book Chapter
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004012
EISBN: 978-1-62708-185-6
... 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...
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
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002140
EISBN: 978-1-62708-188-7
... reasons for choosing thread milling over other thread-cutting methods are: Thread milling makes a smoother and more accurate thread than a tap or die Thread milling is more efficient than using a single-point tool in a lathe The desired thread has too coarse a pitch for cutting with a die...
Abstract
Thread milling is a method of cutting screw threads with a milling cutter in a thread mill. This article discusses the operational procedures of thread milling machines, namely, universal thread mills, production thread mills, planetary thread mills, and numerical control machines. It describes the classification of thread milling cutters, such as single-form cutters and multiple-form cutters. The article reviews the speeds and feeds for thread milling, which depend on a number of variables, such as the material being milled, tool material, and rigidity of the machine and workpiece. It tabulates the cutting speeds for climb and conventional milling.
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Published: 01 January 2005
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Published: 01 January 2005
Fig. 15 Operating principle of planetary thread rolling. More than one segment die may be used.
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