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Effect of Manufacturing Processes on Design
Published in Mahmoud M. Farag, Materials and Process Selection for Engineering Design, 2020
Sheet metal working processes are normally carried out at room temperature and usually involve the change of sheet form without greatly affecting its thickness. The basic sheet metal working processes include shearing, bending, stretch forming, bulging, deep drawing, spinning, and press forming. Other sheet metal forming operations have been developed for the manufacture of certain components and special materials.
Simulation of Metal Forming
Published in Z. Yang, Material Modeling in Finite Element Analysis, 2019
Generally, metal forming processes are classified into two groups: (1) bulk forming and (2) sheet-metal forming. Bulk forming processes specify that the work parts with low surface-area-to- volume ratios undergo significant deformations and shape changes. Bulk forming processes include rolling, forging, extrusion (see Figure 4.2), and drawing. The applied force in bulk deformation processing could be compressive, tensile, shear, or a combination of these forces. Unlike bulk forming, sheet metal forming has a high surface-area-to-volume ratio at the beginning. The sheet metal forming processes are accomplished in presses using a die or punch. Bending, drawing, and shearing (see Figure 4.3) constitute the major sheet metal forming operations.
Metal Forming III—Sheet Metal Forming
Published in Zainul Huda, Manufacturing, 2018
A distinction can be made between metal sheet and plate as follows. Sheet metal thicknesses are typically in the range of 0.4–6 mm. When thickness exceeds about 6 mm, the stock is usually referred to as plate. Metal sheets and plates are the backbones of automotive and aerospace structures. They are extensively used in the manufacture of bodies of automobiles (including buses, trucks, etc.) and railway cars. They are also used in aircraft structures, farm and construction equipment, small and large tools, and office furniture.
Automated retrieval and comparison of sheet metal parts
Published in International Journal of Computer Integrated Manufacturing, 2023
Yang Yang, Srichand Hinduja, Oladele O Owodunni
Sheet metal parts belong to a specific category of products that have the advantage of being lightweight, possess good stiffness, and can be manufactured at a relatively low cost when large quantities are involved. Hence, sheet metal parts are widely used in aerospace, automotive, electrical, and electronic industries. Sheet metal parts are made from a flat metal sheet of constant thickness by either deforming or removing material, resulting in shapes that are considered as features. These features can be further classified into two categories, i.e. global and local features. Global features comprise planar walls and bends, and they define the general shape of the part. The detailed shape of the part is defined by local features (e.g. holes, lances, bridges, etc.), which are characterised by their type, size, and location. Hence, the global features are used for a coarse-level retrieval purpose, but they are also combined with the local features (feature types, their location, and size) for a more detailed similarity assessment.
Development and performance evaluation of a web-based feature extraction and recognition system for sheet metal bending process planning operations
Published in International Journal of Computer Integrated Manufacturing, 2021
Eriyeti Murena, Khumbulani Mpofu, Alfred T Ncube, Olasumbo Makinde, John A Trimble, Xi Vincent Wang
The process of forming in the manufacturing organisations involves shearing, punching nesting, blanking, deep drawing and bending of sheet metal in various geometrical features and products. Amongst these mentioned processes bending is the most widely used manufacturing process.