China 
Africa 
Explore chapters and articles related to this topic
Sheet Metal Working
Published in Sherif D. El Wakil, Processes and Design for Manufacturing, 2019
Conventional bending operations are usually carried out on a press brake. However, with the developments in metal-forming theories and machine tool design and construction, new techniques have evolved that are employed in bending sheet metal but also iron angles, structural beams, and tubes. Figure 6.28 illustrates the working principles and the stages involved in roll bending. As can be seen in the figure, the rolls form a pyramid-type arrangement. Two rolls are used to feed the material, whereas the third (roll B) gradually bends it (see Figure 6.28a,b). The direction of feed is then reversed, and roll A now gradually bends the beam (see Figure 6.28c,d).
Development of a reconfigurable fixture for low weight machining operations
Published in Cogent Engineering, 2019
I. A. Daniyan, A. O. Adeodu, B. I. Oladapo, O. L. Daniyan, O. R. Ajetomobi
According to Simons (2006) and Goubert (2013), a press brake is a machine used to bend sheet metal in which a bottom tool is mounted on a lower stationary beam and a top tool is mounted on a moving upper beam. The primary characteristic parameters for press brakes are the tonnage, working length, distance to the back gauge, working height and stroke (Goubert 2013; Suchy, 2006). In order to increase the efficiency of using a press brake for bending, many reconfigurations of its assembly fixture has been reported. For instance, Guimaraes, Pacheco, Meireles, and Fonseca (2009) introduced the use of standard robots while Gwangwava et al. (2014) designed a modular approach for the reconfiguration. Willa (2011), introduced the use of tool changer in addition to robot development for the fixture assembly while Olayinka, Mpofu, and Olga (2016) used hydraulic cylinders for the reconfiguration of the assembly fixture for press brake, taking into consideration the mechanical design and stress analysis of the component part of the fixture as well as the hydraulic system.
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
Press brake is a machine used to bend sheet metals (Simons, 2006). Bending operations have been classified into 4 types: V-die bending, U-shape bending, wipe bending, rotary bending (SUCHY 2006). Various types of products have been produced using sheet metal bending processes, including durable components and structural components.