International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
Design and Fabrication of Pneumatic Sheet Metal Cutting and Pneumatic Sheet Metal Bending Machine Dinesh Lamse1, Akash Navghare2, Rahul Chavhan3, Ajay Mahawadiwar4 1Student,
Department Mechanical Engineering, Department Mechanical Engineering, 3Student, Department Mechanical Engineering, 4Professor, Department Mechanical Engineering, AGPCE, Nagpur, Maharashtra, India 2Student,
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Abstract - Pneumatics systems are extensively used in a wide range of industries and factories and manufacturing sector entities. Pneumatics system are noted for their simplicity, reliability, and ease of operation. Also they are suitable for fast and rapid application of force. The purpose of this project is to therefore design a simple, easily operated pneumatic sheet metal cutting and bending machine that is sturdy and strong. A pressure of 8-10 bar is enough for operating the unit. The pressurized air passing through the tubes to the cylinder, forces the piston out whose power through the linkage is transmitted to the punch. The work piece thus got is for required dimensions and the piece can be collected through the land clearance provided in the die. The die used in this is fixed such that the die of required shape can be used according to the requirement. This enables us to use different type punch dies resulting in a wide range of products. Different types of punch as requirement can be thus got. According to the work material the operating pressure can be varied. Key Words: Pneumatic System, Direction Control Valve, Compressor, Sheet Cutter, Bending Punch & Die.
1.INTRODUCTION The shearing machine and bending machine is most important in sheet metal industry. This machine should be used for straight cutting machine with wide application. But in some industry hand sheet cutter and hand bender are used. For that machine to operate the human effort are required. The machine should be simple to operate and easy to maintain, hence we tried out to develop the Pneumatic Shearing and Bending Machine. In shearing operation as the punch descends upon the metal, the pressure exerted by the punch first cause the plastic deformation of the metal. Since the clearance between the punch and the die is very small, the plastic deformation takes Š 2017, IRJET
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Impact Factor value: 5.181
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place in a localized area and the metal adjacent to the cutting edges. In bending operation the bend has been made with the help of punch which exerts large force on the work clamped on the die. The bending machine is designed in such a way that, it works automatically. The machine is designed by observing the factors to improve the efficiency and to reduce the cycle time by producing quality output. Automation of machine is achieved with the help of pneumatic system. This involves the design of an efficient system which reduces the human effort and help to increase production output. It also includes pneumatic system, pneumatic component and shearing die and bending die.
1.1 LITERATURE REVIEW Sheet metal bending is one of the most widely applied sheet metal forming operations. The understanding of the bending mechanics is aimed at obtaining two kinds of information important for industrial applications. The first one is the springback prediction for die design and shape control. The second is an estimation of the bend force for selection of press capacity, strength analysis and design of dies. Here an attempt is made to review the status of literature in pneumatic based on various criteria. The work done by various authors are explained below. Vallance and Matlock (1992) studied the friction behavior of zinc-based coated sheet steels and laboratory scale friction analysis techniques that involve sheet sliding over cylindrical dies. Mai Huang and Gardeen (1994) presented a literature review of the springback of doubly curved developable sheet metal surfaces and provided a bibliography on the springback in sheet metal forming. Reviewing the literature, it is found that researchers have been studying the phenomenon of springback for nearly six decades. There ISO 9001:2008 Certified Journal
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