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bulging punches

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Published: 01 January 2006
Fig. 18 Bulge-formed beads on a coupling tube using a rubber punch in a segmented die More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005124
EISBN: 978-1-62708-186-3
.... bulging punches deep drawing Demarest process flexible-die forming fluid cell forming fluid forming gasket Guerin process hydrobuckling hydroform process marform process presses pressure control rubber diaphragm rubber pad forming rubber-die flanging SAAB process trapped-rubber process...
Image
Published: 01 January 2006
Fig. 22 Bulging of a mushroom shape from a preformed shell in a two-piece die with a rubber punch 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
... with the hydroforming tool (2) and the fluid (5). During calibration, the hydroformed sheet (4) is pressed through a hole in the part to be attached (3). The punch (1) is withdrawn to avoid bursting and to ensure a higher forming level at the produced bulge in the sheet. Subsequently, the punch is set toward...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005149
EISBN: 978-1-62708-186-3
... stamping plants. In the manufacture of most large stampings, a sheet metal blank is held on its edges by a blankholder ring and is deformed by means of a punch and die. The movement of the blank into the die cavity is controlled by pressure between the upper and lower parts of the blankholder ring...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005165
EISBN: 978-1-62708-186-3
... provides support and motion for the punch holder. Cutoff Unit The cutoff unit, placed between the press and the front forming slide, is used for cutting work metal into blanks before they are bent to shape. The ends can be cut off straight, or the cut can be curved. Various types of cutoff units...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006971
EISBN: 978-1-62708-439-0
... samples with control modes of (a) R = 0 load control, (b) R = −1 load control, and (c) R = −1 displacement control. 1, top view; 2, bottom view; 3, side view. Source: Ref 49 The R = 0 sample ( Fig. 8a ), which was tested with the more typical single-punch setup, shows a smooth bulge...
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.a0005154
EISBN: 978-1-62708-186-3
..., for example, welding cells, flying saws, hole punching, or machining operations of various kinds. For low-volume production, on the other hand, one often has to rely on equipment that is flexible enough to be reprogrammed according to a changing product spectrum. The importance of having the same kind...
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...
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
... and the use of small and large clearance. It informs that the force needed to pierce a given material depends on the shear strength of the work metal, the peripheral size of the hole or holes to be pierced, stock thickness, and depth of shear on the punch. The article discusses the presses and tools used...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005121
EISBN: 978-1-62708-186-3
... selection for drawing. It explains the types of dies used for drawing sheet metal and the effects of process variables and material variables on deep drawing. The process variables that affect the success or failure of a deep-drawing operation include the punch and die radii, punch-to-die clearance, press...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003322
EISBN: 978-1-62708-176-4
... stress-strain curve tensile test viscosity viscometers coaxial cylinder viscometer cone-and-plate viscometer capillary viscometer workability data reduction punch testing COMPUTER MODELING OF DEFORMATION has become a popular engineering tool and is used with considerable success...
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
... strains on (a) the bulging cylindrical surface of an upset test and (b) their variation with aspect ratio and friction conditions. Source: Ref 1 When friction exists at the die contact surfaces, material at these surfaces is constrained from moving outward, while material at the mid-plane...
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
.... The Olsen cup test measures the maximum penetration of a 22 mm (0.875 in.) diameter hemispherical punch into a clamped flat blank (see the section “Stretching Tests” in the article “Formability Testing of Sheet Metals” in this Volume). The punch depth at failure is the Olsen cup value. The test has been...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006527
EISBN: 978-1-62708-207-5
... percent in the 5000 and 6000 series. Using biaxial bulge testing, which better emulates the conditions that exist in stamping operations, researchers have found that true strains of 0.6 are achievable at 200 °C (400 °F) ( Ref 11 ). Bendability Bendability is the ability of a material to be bent...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005139
EISBN: 978-1-62708-186-3
... martensitic (410), and one ferritic (430). The figure also shows that the type of failure in cup drawing of the austenitic types was different from that of types 410 and 430. The austenitic types broke in a fairly clean line near the punch nose radius, almost as if the bottom of the drawn cup were blanked out...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004031
EISBN: 978-1-62708-185-6
... into various shapes. die and the two edges of a V-shaped die The work is done by the punch pushing the opening. backward extrusion. Same as indirect extru- stock into cavities or depressions of similar sion. See also extrusion. shape in the die or by auxiliary attachments air-lift hammer. A type of gravity...
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 Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005454
EISBN: 978-1-62708-196-2
... The evolution of damage is strongly depen- which cylindrical and conical sheet metal to erosion of the die material, generally dent on material, microstructure, and proces- parts are formed by a modified rubber occurring in areas subject to repeated high sing conditions (strain, strain rate, bulging punch...