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piercing tools

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Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005104
EISBN: 978-1-62708-186-3
... cutters. The article also discusses the selection of materials for blanking and piercing dies and provides examples that illustrate the various types of tooling changes for blanking high-carbon steel. blanking coatings cold shearing high-carbon steel hot shearing lubrication piercing dies...
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Published: 01 January 2006
Fig. 16 Sectional views illustrating typical tools used for blanking and piercing simple shapes. Tooling at left is for short-run production of parts similar to parts 1 and 2 in Fig. 17 made from relatively thin-gage metal. Tooling at right is for longer production runs. More
Image
Published: 01 January 2006
Fig. 16 Tool for tube piercing without a mandrel, and a pierced tube showing the indentations around the holes More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005109
EISBN: 978-1-62708-186-3
... Abstract This article illustrates the characteristics of pierced holes and summarizes the hole wall quality. Specific guidance in selecting die clearances is provided by considering the types of edges produced with different clearances. The article discusses the effect of tool dulling...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
... Abstract This article begins with a discussion on the fundamentals of cutting. It focuses on blanking and piercing operations in a press tool to form and shape the final part geometry. The types of piercing operations include conventional piercing, piercing with a pointed punch, piece...
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Published: 01 January 2005
Fig. 10 Gear blank produced by four-pass hot upsetting and piercing in the tooling arrangement shown, with almost no metal loss and no trimming required. Dimensions given in inches More
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Published: 01 January 2005
Fig. 14 Irregularly shaped hand-tool component that was upset and pierced from a hammer-forged blank in the tooling setup shown. Dimensions given in inches More
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Published: 01 January 2006
Fig. 2 Forming operations in a four-slide machine. (a) Power-press tools pierce two holes into strip material at first station. (b) Tools at next press station notch strip on both edges. (c) Notched-and-pierced strip is fed in from press area. As strip motion stops, stock clamp descends so More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
... optimal piercing clearance. This is partly because the blanked edge is generally close to the stock edge, and material expansion is therefore less restricted. A piercing tool must move a great deal of material away from its cutting edge, and for longest life, the clearance should be selected to eliminate...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005180
EISBN: 978-1-62708-186-3
... on the front shaft. Stock is fed from the left side of the press. Sometimes, two or more piercing heads may be mounted on a single press. The slides for these heads may be mounted on either the front or rear shaft, providing flexibility in tooling. For instance, a burr resulting from the piercing operation may...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005119
EISBN: 978-1-62708-186-3
... of laminations for the following reasons: Tool costs are lower, and the single-notch die can be used on several different laminations. The cost is sometimes less than 5% of that for a multiple die that can pierce all the holes and slots in one press stroke. Laminations more than approximately 380 mm (15...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003980
EISBN: 978-1-62708-185-6
... piercing, in which the header tools must be stripped from the work. In these operations, the punch designs should be checked to determine that they will be released from the forging before the gripper die starts to open. Available Load and Energy When using the general rule that upsets should...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005141
EISBN: 978-1-62708-186-3
... and dies in blanking and piercing than do steels. On drawing tools, they require larger clearances but approximately the same radii, to allow the free flow of metal and avoid excessive stretching. The amount of springback in forming aluminum alloys, which is generally more than that of steel, must...
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Published: 01 January 2006
. Blank outline; pierce round hole (1000 pieces/h) 3. Ream and deburr round hole (300 pieces/h) 4. Pierce keyhole and oval slot (770 pieces/h) Operating conditions Types of press 670 kN (75 tonf) mechanical Press speed 55 strokes per minute Die material A2 tool steel at 58–60 HRC More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009154
EISBN: 978-1-62708-186-3
..., and self-pierce riveting. clinched joints clinching crimping fatigue behavior forming mechanical joining riveting self-pierce riveting MECHANICAL JOINING is a process where two or more components are held together through the use of either an integral feature of components or through...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003181
EISBN: 978-1-62708-199-3
... interchangeably to form steel parts because this could destroy the high finish on the tools. Most aluminum alloys require smaller clearances between punches and dies in blanking and piercing than do steels. For drawing operations, similar tool radii but larger clearances are required, with respect to steel...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005145
EISBN: 978-1-62708-186-3
... sections of lower-alloy, air-hardening tool steel. The punch pierced the slot and flattened the bulge above the flute. The stripper formed the flute when struck by the punch holder. Deep Drawing Nickel alloys can be drawn into any shape that is feasible with deep drawing steel. The physical...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005116
EISBN: 978-1-62708-186-3
... Abstract Many shearing, blanking, and piercing operations are based on the same underlying principles of shear mechanisms. This article provides information on the various operations associated with die cutting and describes three phases involved in the shear cutting or punching action...
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Published: 01 January 2005
Fig. 30 Blanking and rolling tools used in ring rolling. (a) Tapered indenting punch. (b) Tapered, swing arm mounted indent punch. (c) Press mandrel. (d) Piercing punch and support ring for a blanking press. (e) Typical mandrel for a mid-size mill. (f) Axial roll. (g) Main roll. See text More
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Published: 01 January 2005
Fig. 12 Tooling setup for producing a cluster gear blank in two separate operations involving upsetting and piercing, then trimming. Dimensions given in inches More