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die taper angle

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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003983
EISBN: 978-1-62708-185-6
.... It analyzes the effect of reduction, feed rate, die taper angle, surface contaminants, lubrication, and material response on swaging operation. The article discusses the applications for which swaging is the best method for producing a given shape, and compares swaging with alternative processes. It concludes...
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
... external threads in cylindrical or tapered surfaces by the use of solid or self-opening dies. Die threading is a slower method of producing external threads than thread rolling, but it is faster than single-point threading in a lathe. Hardness of the work metal limits the application of die threading...
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Published: 01 January 1989
was progressively increased by use of larger-diameter fly cutters. (d) Taper die-sinking cutter was 50 mm (2 in.) in diameter by 152 mm (6 in.) in length. (e) A 17.5 mm ( 11 16 in.) diam crankshaft drill was used. More
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
... commonly used, mainly because cuts taken on die castings are usually light. When heavier cuts must be taken, higher feeds are feasible. Boring For boring tools, rake and relief angles are usually about the same as for tools used in turning. The same tool materials, speeds, and feeds can be employed...
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001379
EISBN: 978-1-62708-173-3
... ( Fig. 1 ). The leading tube contains the female portion of the beveled joint and is the stronger of the two metals in dissimilar metal joints. Extrusion press die angles of 30 to 35° are common. An advantage of extrusion welding over other methods of deformation butt welding of tubes...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004036
EISBN: 978-1-62708-185-6
...(a) . In small forgings, this division of flash is unnecessary, and all flash is usually placed in one die. Fig. 1 Distribution of flash, shown in sectional views, as (a) divided between upper and lower dies, (b) limited to lower die, or (c) limited to upper die. When different draft angles...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004034
EISBN: 978-1-62708-185-6
... alternatives for reducing or eliminating draft. It provides a checklist citing major items that should be coordinated with a designer's review of draft. draft angle forging hammer stroke inside draft DRAFT is the term used to describe the taper commonly applied to or inherent in the vertical...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009004
EISBN: 978-1-62708-185-6
... , extrusion with a dead metal zone near the die requires lower drawing force. In the range of die angles between α 1 and α 2 , central burst is energetically more favorable ( Ref 9 ). Fig. 18 Variation in mode of flow with die angle in wire drawing. The mode requiring the smallest force at any die...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003997
EISBN: 978-1-62708-185-6
... and the workpiece. A negative draft angle would be impossible to eject without damage to the die or workpiece. A draft angle of 1 8 ° should be considered the absolute minimum for production forging. This very small amount of positive draft is sufficient to eliminate the possibility of negative draft...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009008
EISBN: 978-1-62708-185-6
... in comparison with the cylindrical compression-test specimen in Fig. 2 . The height of the cylindrical surface at midheight ranges from 0.2 to 0.75 times the specimen height. The reduced diameter of the flanged compression-test specimens is 0.8 times the original cylinder diameter, and the angle of the tapered...
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
... is tapered slightly so that rolling pressure is released gradually without marking the work. Feed Rate Feed rate, in terms of feed per work revolution, is proportional to the ratio of the difference in lead angles of the dies to the lead angle of the work. The die lead angle can be either greater...
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
... to the contour of the die. All of the commonly used straight and tapered thread forms can be rolled. These include Unified, International Standard (the same as UNR), metric, Whitworth, Acme, worm, buttress, screw shell, wood screw, tapping screw, lag screw, and drive screw. Thread diameters vary from less...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005162
EISBN: 978-1-62708-186-3
... presses the workpiece into a die) is widely used and is often the most effective method when production quantities are large and workpieces are relatively small. In some applications, however, other forming methods may be desirable or needed. For example, the production of hollow shells from flat blanks...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005178
EISBN: 978-1-62708-186-3
... when the upper blade closely parallels the lower die. If a rake angle were applied to the blade, it would distort the part in contact with the blade; however, the other side of the cut in contact with the die would be free of distortion. Round and square bars are always single cut. Flat bars...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003990
EISBN: 978-1-62708-185-6
... Differences between rotary and radial forging. (a) In rotary forging, the upper die, tilted with respect to the lower die, rotates around the workpiece. The tilt angle and shape of the upper die result in only a small area of contact (footprint) between the workpiece and the upper die at any given time...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.9781627081856
EISBN: 978-1-62708-185-6
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003097
EISBN: 978-1-62708-199-3
... a definite parting line is specified. Draft Draft on the sides of a forging is an angle or taper necessary for releasing the forging from the die and is desirable for long die life and economical production. Draft requirements vary with the shape and size of the forging. The effect of part size...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004005
EISBN: 978-1-62708-185-6
... it to cool around the die. More commonly, the die insert is force fitted mechanically into the shrink ring, using tapered interference surfaces and molybdenum disulfide as a lubricant. The most commonly used taper angle is 1 2 to 1°. In general, no further advantage is gained by making the outside...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006385
EISBN: 978-1-62708-192-4
... dies, where the die angle is 90°. From this figure, common flow patterns can be identified: The most homogeneous (uniform) flow pattern ( Fig. 4a ) occurs when there is no friction at the interfaces. This type of flow also occurs in indirect extrusion, where there is no friction at the billet...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004038
EISBN: 978-1-62708-185-6
... for cutting drafted ribs are prescribed by height-to-width or depth-to-width ratios up to about 6 to 1. Ratios above 8 to 1 are uncommon. Draft angles on a rib are the result of the side angle of the conical milling cutter. Because die blocks are machined in the heat treated condition, loads on the cutters...