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straight-knife shearing

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Published: 01 December 1998
Fig. 1 Mechanics of straight-knife shearing More
Image
Published: 01 January 1993
Fig. 1 Schematic showing the mechanism of straight-knife shearing More
Image
Published: 01 January 2006
Fig. 1 Schematic illustration of straight-knife shearing. (a) Side view. (b) Rake angle More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005102
EISBN: 978-1-62708-186-3
... Abstract Shearing is a method for cutting a material piece into smaller pieces using a shear knife to force the material past an opposition shear knife in a progression form. This article describes the principles, attributes, and defects of straight-knife shearing. The equipment, materials used...
Image
Published: 01 December 1998
Fig. 6 Effects of shearing a round bar with a straight knife More
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001486
EISBN: 978-1-62708-173-3
... workers, nibblers, and band saws. The article provides details on each of these. band saws fixturing guillotine machines iron workers knife rake mechanical cutting nibblers punching machines shearing machines shears straight-knife shearing welding OXYFUEL AND PLASMA CUTTING...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003179
EISBN: 978-1-62708-199-3
... for producing circular or other contoured shapes from sheet or plate. Straight-Knife Shearing In straight-knife shearing, the work metal is placed between a stationary lower knife (or blade) and a movable upper knife. As the upper knife is forced down, the work metal is penetrated to a specific portion...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005174
EISBN: 978-1-62708-186-3
...-effective. Shears Shears are normally used to prepare large, relatively thin materials (≤25 mm, or 1 in., thick) by cutting them to final dimensions. The two principal shearing variations are straight-knife shearing and rotary shearing. In straight-knife shearing, the work metal is placed between...
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
... are reviewed in terms of tool materials, coatings and surface treatments, and lubrication. The article discusses tool steels that are used for cold and hot shearing, and rotary slitting. It provides information on the materials used for two main categories of machine knives: circular knives and straight knife...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003178
EISBN: 978-1-62708-199-3
... with a fixed plug ( Fig. 3 ) is widely known and used for drawing large-to-medium diameter straight tubes. The plug, when pushed into the deformation zone, is pulled forward by the frictional force created by the sliding movement of the deforming tube. Therefore, the plug must be held in the correct position...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005103
EISBN: 978-1-62708-186-3
... be used in cutting plate or sheet to a required length. However, cut-to-length lines are normally referred to the coil process lines using shearing or knife cutting. This section discusses only cut-to-length lines using straight knife shearing. Nevertheless, some fundamentals of line configurations in cut...
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
... BARS AND BAR SECTIONS are sheared between the lower and upper blades of a machine in which only the upper blade is movable. As the upper blade is forced down, the work metal is distorted and caused to fracture. There are also shears, such as impact cutoff machines, that use a horizontal knife movement...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005113
EISBN: 978-1-62708-186-3
...-bends and thus a larger press brake. Production quantities therefore must justify the added expense. Deep channels are possible with standard V-dies. A reverse bend is made in the center of the metal to open up the channel so that the straight knife die will fit to form the bottom corners. After...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006043
EISBN: 978-1-62708-172-6
... and shear or knife adhesion. The adhesion equipment is described in the article “Shop and Field Quality Control and Quality Assurance” in this Volume. There are three generic types of tensile (or pull-off) adhesion test equipment as described by ASTM D4541 and D7234: mechanical ( Fig. 3 ), pneumatic...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... failure mode will be shear. The fractured area appears to be highly glazed, and the direction of the fracture will be from straight across the tooth to a convex shape. For example, a loaded gear and pinion set were operating at a high rate of speed when the pinion stopped instantaneously ( Fig. 32...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005528
EISBN: 978-1-62708-197-9
... and fracture to investigate burr formation in shearing processes. Both groups of shearing processes, continuous (rotary) and discontinuous (straight or curved blade), were discussed in this work. The first group was motivated by the rapid rise in the use of aluminum in automotive applications to meet fuel...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003427
EISBN: 978-1-62708-195-5
...; this resulted in 130°, as shown in Fig. 5 . As the distance between the centroids becomes greater, however, the reaction loads go up in value, as demonstrated in Fig. 6 . Therefore, the 130° is limited to thin laminates as shown in Fig. 7 where a standard shear head would cause a knife-edge condition...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006471
EISBN: 978-1-62708-190-0
... into the testpiece using either a straight-beam (longitudinal-wave) technique or one of the various angle-beam techniques, such as shear, combined longitudinal and shear, or Lamb wave. Immersion-type search units basically are straight-beam units and can be used for either straight-beam or angle-beam inspection...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003489
EISBN: 978-1-62708-195-5
.... Fig. 6 Adhesive shear stress distribution for skin-doubler specimen. E , tensile modulus of adherends; G , shear modulus of adhesive. Source: Ref 2 Fig. 7 Some general properties of adhesives relative to shear stress and strain. LL , end of straight line region; KN , maximum rate...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005161
EISBN: 978-1-62708-186-3
... dies. The U-die is often referred to as a channel die. The spread of shear forces in a cutting die is equal to the clearance, which is usually approximately 10% of the sheet-metal thickness. The larger spread of bending forces is accomplished by using a clearance equal to the sheet metal thickness plus...