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Metal Forming III—Sheet Metal Forming
Published in Zainul Huda, Manufacturing, 2018
There are two main types of bending operations: (a) V-bending and (b) edge bending. In V-bending, a V-shaped punch forces the work into the V-shaped die and, hence, bends it. In edge bending, the punch applies force to a cantilever beam section, causing the work to bend over the edge of the die.
Forming and Shaping Processes
Published in Richard L. Shell, Ernest L. Hall, Handbook of Industrial Automation, 2000
Bending is a common sheet-metal process achieved using a press brake. The ability of a material to undergo bending is characterized by its bend radius. The bend radius depends on the ductility of a material and the sheet thickness. The outer fibers in bending are typically subjected to tension and the inner fibers are put in compression. This makes the determination of the neutral axis very important. Compensation must also be provided for springback or the elastic recovery after bending. Bent products abound in applications, automobile and aircraft bodies serving as principal examples. Casings and bodies for home airconditioners and refrigerators, and boxing for packaging and storage containers all illustrate bending at various angles and varying sheet thicknesses. Bending also serves in certain applications where the principal purpose is to increase the moment of inertia and stiffness of parts. Material is typically clamped and bent at the desired places with a die.
Effect of microstructure on fracture in age hardenable Al alloys
Published in Philosophical Magazine, 2020
Rama K. Sabat, Waqas Muhammad, Raja K. Mishra, Kaan Inal
Bending is generally encountered in sheet metal forming applications which have great importance in automobile industries. The inner automotive structures are made by bending of thick gauge sheets and are joined to outer body panels through a process, known as hemming. Further, it is important to study the bending behaviour of structural components such as front rails, rockers, pillars, etc. to maximise the energy absorption during the crash.
Classification and selection of sheet forming processes with machine learning
Published in International Journal of Computer Integrated Manufacturing, 2018
Elia Hamouche, Evripides G. Loukaides
Sheet metal bending is a widely used and is a vital manufacturing process in industry (Hosford and Caddell 2011). Sheet metal bending causes plastic deformation in one direction to change the geometry of the workpiece (Lange 1985). Various set-ups using a punch die type set-up and fixtures can be utilised to produce different bending radii and control the amount of springback (Swift and Booker 2003).
Motorcycle helmet visor–related facial injury and its potential mechanism of injury: Evidence-based case study
Published in Traffic Injury Prevention, 2019
Roszalina Ramli, Jennifer A. Oxley
A visor, which is usually made of a polycarbonate material, has the ability to bend although in a limited direction. Among the factors that affect bending mechanism are the material stiffness, thickness, and radius of curvature (Mills 2005).