Informatics Publishing Limited

D. Gokulakannan ¹, N. Gurumoorthy ¹, R. Narayanasamy ¹, R. Stephanraj ¹

Affiliations
1 Department of Electronics and Instrumentation, Nandha Engineering College, IN

Abstract

The Machine we designed and fabricated is used for cutting any shape of object like Circular, Rectangular, and Polygon. Hence our project namely Typical Pipe Cutting Machine is a Special type of Machine. According to the type of material to be cut, the cutting tool can be changed. This project gives details of Cutting various shapes and sizes of components. This machine can be widely applied in almost all type of industries. The pipe cutting process is a main part of the all industries. Normally the cutting machine is manually hand operated one for medium and small scale industries. In our project is pneumatically operated “TYPICAL PIPE CUTTING MACHINE”. Automation in the modern world is inevitable. Any automatic machine aimed at the economical use of man, machine, and material worth the most. In our project is hand operated D.C valve and flow control valve is used for semi-automation. The pipe cutting machine works with the help of pneumatic double acting cylinder. The piston is connected to the moving cutting tool. It is also used to cut the small size of sheet metal. The machine is portable in size, so easy transportable.

Keywords

Pipe Cutting Machine, Automation, Pneumatic Cylinder, Flow Control Valve, Check Valve.

Full Text

     

S. Karthikheyen ¹, R. Narayanasamy ²

Affiliations
1 School of Mechanical Engineering, SASTRA University, Thanjavur - 613 402, IN
2 Department of Production Engineering, National Institute of Technology, Trichy - 620 015, IN

Abstract

The axial compression of solid cylinders has been investigated by many authors due to its application in the area of metal forming. In the axial compression the frictional condition between the dies and workpiece directly affect the plastic deformation. During the deformation, friction causes heterogeneous deformation which results in barrelling of cylinders. The prediction o f defects occurrence in any forming process requires an understanding o f the mechanism of the deformation and a knowledge of the stress, strain, strain rate and temperature that takes place during deformation. In the present study, barrelling of elliptical shaped cylinders have been investigated. The radius of barrel for different deformation loads has also been studied. Experiments were carried out to generate data on the upset forming of elliptical and circular cylinders at room temperature of hot-rolled commercially pure aluminium with different lubrication conditions. Calculations were made on the assumptions that the curvature of the barrel surface followed the geometry of both elliptical and circular arcs. It was observed that the true axial strain of the barrel shows a straight-line relationship with true diameter strain irrespective of the geometry of the cylinders. It was also observed that the measured radius of curvature of the barrel also exhibited a straight-line relationship with a new geometrical shape factor, irrespective of the aspect ratio and b/a ratio. Further, empirical relationships were found to exist between the measured radius of curvature of the barrel and other variables such as hydrostatic stress and the stress-ratio parameter.

Full Text