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punch loading

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Image
Published: 01 January 2000
Fig. 6 Punch-loading Kolsky bar apparatus More
Image
Published: 30 September 2015
Fig. 16 Punch compression. P is total punch load, L is length, Y is deflection, A is area of punch, and E is Young's modulus. More
Image
Published: 01 January 2006
Fig. 33 Measured and FE predicted punch load versus displacement during drawing and redrawing for aluminum alloy 6016-T4 sheet. Source: Ref 194 More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003295
EISBN: 978-1-62708-176-4
... Abstract This article reviews the dynamic factors, experimental methods and setup, and result analysis of different types of high strain rate shear tests. These include high strain rate torsion testing, double-notch shear testing and punch loading, drop-weight compression shear testing, thick...
Image
Published: 01 January 2006
Fig. 14 Punch setup for deep drawing a superplastic sheet. (a) Plot showing thinning characteristics of a 59.9 mm (2.36 in.) diameter Zn-21Al-1Cu-0.1Mg heated sheet that was formed using the 160 mm (6.3 in.) diameter water-cooled punch setup illustrated in (b) and (c). N , blankholder load More
Image
Published: 01 January 2006
Fig. 5 An array of holes punched in sheet metal to form a filter or grate. Reducing the number of holes and increasing their size reduces tool wear and punching loads. More
Image
Published: 01 January 2006
Fig. 25 Key for interpreting plot of loads from punching tests More
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005114
EISBN: 978-1-62708-186-3
... components are continuously subjected to high-impact loads and deflection forces. Consequently, all selections should be predicated on the basis of resistance to shock, deflection, and wear. Punch and Die Holders These plates must satisfactorily oppose rapidly applied compression loads. The plate...
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
..., the material is lifted with the ascending punch until it contacts the stripper and is freed of the punch. Fig. 11 Stripping with spring-loaded and positive stripper plates Shearing Force The formula for the force F (area times shearing stress) required to shear, blank, or punch a given...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006034
EISBN: 978-1-62708-175-7
..., such as a screw, le smaller core rods are held by means of silver solder or braze. Punches Punches can perform the function of a die or a core rod and carry the full load of the compressive force required to compact the PM part. Wear resistance and toughness are the most important factors in materials...
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
..., (b) solid hemispherical indenter, and (c) disc deformation under loading Small punch specimens are prepared by the progressive grinding and polishing of miniature disc samples down to a thickness of 500 ± 5 μm using incrementally finer silicon carbide abrasive papers, finishing with 1200-grit...
Image
Published: 30 June 2023
Fig. 9 Shear punch test schematic. w , die-punch clearance; θ, shear angle; d , shear punch displacement; F , applied load; r punch , punch radius; r die , lower-die inner diameter; 1, shear punch; 2, upper die; 3, disc specimen; 4, lower die More
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005531
EISBN: 978-1-62708-197-9
... Figure 23 shows a schematic of the press and tooling. The tooling consists of four moving components: an outer die and an inner core that move together, a top punch, a lower inner punch, and a stationary lower outer punch. The press was instrumented with strain gages to measure loads on tooling members...
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: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006526
EISBN: 978-1-62708-207-5
... of aluminum alloy parts. Clearance given in inches. The area ratio between punch shank and head is also an important design factor. A large ratio has the effect of spreading the punch load over a large area of pressure pad. On the other hand, it requires a wider block of metal for its 1fabrication...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003270
EISBN: 978-1-62708-176-4
... with fully annealed metals. The article discusses the plastic deformation of ideal plastic metals under an indenter, by a flat punch, and by spherical indenters. The classification of the hardness tests using various criteria, including type of measurement, magnitude of indentation load, and nature...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005101
EISBN: 978-1-62708-186-3
... and expansion, and (c) piercing. Source: Ref 1 Hole Size The size of holes that can be punched is limited by the sheet material strength and thickness. As is evident in Fig. 1 , the hole-making punch is subjected to a compressive load, which is equal to the force required to cause the shearing...
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
... the hole is larger than the punch size and because stripping wear is minimized. Load on the press may be slightly reduced ( Table 2 ). Burr height is smaller at the beginning of a run and increases at a slower rate during the run. Distortion or waviness of the work surface is reduced, especially...
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
... 5 illustrates diagrammatically the effect of shear on the blanking load. The term shear , as used here, refers to grinding either the punch or the die at an angle, the other member remaining flat so as not to distort the product. The amount of shear is the difference between the high and low...
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
... material to flow into the outer ring groove. Upon filling of the ring groove, further upsetting causes the punch-side material to spread outward within the die-side material. The final joint is a round button with no sharp edges or burrs. The load-carrying capability of the joint depends on the button...