shows the different parts of engine lathe or central lathe. The bed of a lathe machine is the base on which all other parts of lathe are mounted.
Unit 3 machining operations ppt 1. 13.4.1) are shown, in simplest two-dimensional form, in Fig. A lathe machine is used to machine cylindrical work piece which is 360 degree symmetrical form the axis of rotation. This further sub classification is according to special features such as method of drive, method of chucking, capacity and number and arrangement of tool slides etc. In a lathe the work piece revolves along with the chuck to which the motor is connected by various gears and shafts. 32.3 shows a schematic of multi-spindle auto. Machining It is a metal removing operation from the work piece with the help of machine tools and cutting tools. The cutting tool is feed into the workpiece, which rotates about its own axis, causing the workpiece to be formed to the desired shape. Engine lathe It is the most commonly used lathe and is of high importance in lathe family. BASIC MECHANICS OF METAL CUTTING The basic mechanics of chip-type machining processes (Fig. The major parts of lathe machine are given as under: 1. The name engine is kept as in the past steam engines are used for running these lathes. Lathe NC, CNC Thread cutting mechanism. A tool with a certain rake angle a (positive as shown) and relief angle moves along the surface of the workpiece at a depth t 1. A Rapid Reduction Lathe, is another form of a complete engine lathe, built heavy and strong, with a powerful and somewhat complicated driving mechanism and very strong feed.The tool holding device should accommodate at least two tools and hold them very rigidly. It is combination of many parts which works together to perform a desire function. Drilling machines, 7. tapered work. Lathe machine operations performed by holding the work by a chuck or a faceplate or an angle plate are: Drilling: Drilling is the operation of producing a cylindrical hole in a workpiece. bar turret lathe, chucking turret lathe, vertical lathe etc. vertical lathe machine for large and heavy parts. Drilling Machine. Carriage 5. Grinding, or abrasive machining, once performed on conventional milling machines, lathes and shapers, is now performed on various types of grinding machines. It is the most simplest method in which one person would turn the wood (work piece) with a rope and meanwhile the other person would use the sharp tool to cut the shapes in the wood. Lathe can be defined as a machine tool which holds the work between two rigid and strong supports, called centres, or in a chuck or Face plate while the lathe revolves.
automatic machines for high production. Dr. N.K.
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