The workpiece is attached to the lathe, after which it rotates against a stationary cutting tool. If there is old material in the lathe when you come to use it, you need to take it out with the chuck key. The centre lathe is a complex piece of machinery and requires a lot of attention when learning the process. It is used generally for small amounts of material. The 7 Machining Processes Supported By Lathes. It is also called as base of centre lathe. Processes > The Centre Lathe _ The Centre Lathe is a machine that is used to create cylindrical shapes from materials. A piece of material is rotated and a cutting tool is brought up to the rotating material and it shapes it. Centre lathe processes. The workpiece is normally held in a chuck, or a chuck and centre or between centres, perhaps supported by a steady and driven by a carrier . When the tool is moved from right to the left we get the left-hand thread. November 18, 2019. 24. CENTERSCENTERS These are machined with a morse taper, fit into the morse taper sockets of the head stock and tail stock spindles. The centre lathe is a complex piece of machinery and requires a lot of attention when learning the process. It is the process of producing rough surface of embossing diamond shaped pattern on a smooth surface of a cylindrical job. If there is old material in the lathe when you come to use it, you need to take it out with the chuck key. Discussion; Pankaj -Posted on 03 Nov 15 - The foundation of centre lathe is called as bed. Spindle: ACCESSORIESACCESSORIES TOOLS THAT ARE USED ON THE CENTRE LATHE TO ENHANCE SOME PROCESSES. The removal of material from metal is called Machining, and the process usually happens in a machine shop that has special equipment. Parts of lathe machine Headstock: The headstock is fixed on the machine and it consists of many pulleys, lever, spindle, chuck, and gear box. Process(es) covered: Turning: The production by turning, facing, boring, screw cutting, centre drilling and knurling of primarily cylindrical or spherical forms from both ferrous and non-ferrous raw material, or appropriate plastics possibly using oil-based coolants. ‘solids of revolution’). This is performed by taking successive cuts with a threading toolbit the same shape as the thread form required. This basically means to make the end of the bar perfectly square to the sides of the bar. Before starting to shape the metal bar it is essential to face off the end of the bar. Whether it’s made of wood or metal, most workpieces can be altered using a lathe. Work to be turned may be held between the two centers or with chuck and tail stock in center. The chuck key must never be in the machine without your hand on it. - Usually, the beds are made of grey cast iron, nodular cast iron, or … Lathe Machine. 25. The chuck key must never be in the machine without your hand… - It a heavy and rigidly made casting in one piece. Lathe Threading. Practice Exercise: 1. The process of producing work, or parts of work, which is essentialy cylindrical but may be stepped into various diameters and/or tapered (i.e. ... Knurling is the process of ‘pressing’, not cutting, a diamond or straight pattern into the surface of a metal bar. Thread cutting on the lathe is a process that produces a helical ridge of uniform section on the workpiece. Facing Off. The workpiece is rotating between the two centres i.e., live centre and dead centre os the lathe. Here the tool is moved longitudinally to obtain the required type of the thread. Lathes are used extensively in the manufacturing industry to remove material from a workpiece. Process Capability Analysis of a Centre Lathe Turning Process Andrew A. Erameh1, Nurudeen A. Raji2, Rasheed O. Durojaye3, Abiodun A. Yussouff4 1Department of Mechanical Engineering, Igbinedion University, Okada, Nigeria 2Department of Mechanical Engineering, Lagos State University, Ojo, Nigeria
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