Lathe machine multiple choice questions and answers mcq. Lathes are particularly suited to machining relatively long, cylindrical workpieces, yet can create a variety of parts. Numerous operations can be completed on the lathe, but only those commonly used in me en 282 are thoroughly discussed in this manual. There are several types of turning operations, those are. To identify the tool used for each operation, see section 2. The sections of this manual are arranged in the order you must understand information to successfully complete a lathe operation. Later sections will refer to skills discussed in previous sections. Introduction to turning tools and their application. Lathe operations od1645 lesson 1task 1 sliding gap feature, this lathe is similar to the floormounted engine lathe. It is the most common type of operation in all lathe machine operations. The lathe is one of the most versatile machine tools used in industry.
Pdf all you need to know about cnc lathe machines norm. Lathes are machines that shape material by rotating a drive, which turns the piece being worked on against cutting tools that can be switched out to obtain the appropriate cut. Before these operations can be done, a thorough knowledge of the variable factors of lathe speeds, feeds, and depth of cut must be understood. In this tutorial, you create general turning, milling caxis, and miscellaneous operations to program the interior core of a hose nozzle in mastercam 2017.
The examples for such machine tools may be lathe, milling machine, grinding machine, drilling machine, planning machine etc. The lathe machine usage include operations such as facing, turning, boring and taper etc. You need to have a part drawing, create a product with nc geometry, fixture, part, and stock, change to the lathe machining workbench, setup the machine part operation, add tool paths, check tool paths, and. Instructions to learn how to use a lathe the lathe is a machine tool used principally for shaping pieces of metal and sometimes wood or other materials by causing the workpiece to be held and rotated by the lathe while a tool bit is advanced into the work causing the cutting action. We are now capable of developing most complex of parts and products with absolute perfection, and with minimum of effort. The carriage of the lathe travels along which axis. This is accomplished by holding the work securely and rigidly on the machine and then turning it against cutting tool, which will remove metal from the work in the form of chips. Rotate the workpiece by hand to check clearance with the tool support. Workpiece can be held securely and rigidly on the machine tool between centres or by means of chuck. Select the appropriate speed for the turning job at hand. Guide to cnc lathe machining and turning centers precise. Although as any operation performs in lathe machine tool but these are some of the general operation we are doing in a lathe. The type of machine in the wsutc mechanical engineering machine shop is a manual lathe, also known as a tool room lathe. Lathe machine is one of the oldest machine tools in the production machine this machine is also known as the mother of all machines.
The lead screw and gears should be checked frequently for any metal chips that could be lodged in the gearing mechanisms. Lathe machining work bench tutorial university of idaho. Although there are several other types of lathes, this document will. Jul 29, 2017 a lathe machine is a mechanical device in which the workpiece is rotated against a suitable cutting tool for producing cylindrical forms in the metal, wood or any other machinable material.
Turning and lathe basics manufacturing stanford edu. Instead of feeding the tool parallel to the axis of operations performed on lathe other than turning rotation, tool follows a contour that is other than straight, thus creating a contoured form form turning. And the tailstock is moved towards the job by hand feed. Workpiece can be held securely and rigidly on the machine tool between centres or. It is easy to understand and help you to improve your skill. In this operation, the job is rotated at the turning speed on the lathe axis and the drilling tool fitted on the tailstock spindle. Lathe machine performs the different operations such as turning, facing, taper turning, knurling, grooving, parting off, thread cutting, reaming etc. The use of lathe machine is an integral part of engineering workshop practice. The tool has a shape that is imparted to the work by plunging the tool radially into work. Various operations performed on workshop lathe machine axibook. Mcq quiz on lathe machine multiple choice questions and answers on lathe machine mcq questions quiz on lathe machine objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams.
The plate having graduations in degrees may be swivelled on either side of the zero graduation and is set at the desired angle with the lathe axis. Slight differences in the various engine lathes make it easy such as turning, boring, drilling, reaming. A lathe can drill, ream, turn, knurl, cut and shape cylindrical parts. Keep the tool rest adjusted close to the work and at the correct height. Standard operating procedures for manual toolroom lathes. The lathe is a machine tool, which removes the metal from a piece of work to give the required shape and size. General operations on the lathe include straight and shoulder turning, facing, grooving, parting, turning tapers, and cutting various screw threads. The work is held and rotated on its axis while the cutting tool is advanced along the line of a desired cut. Questions and answers on lathe machine working and tools. Various operations performed on workshop lathe machine. In turning, a workpiece is rotated about its axis as singlepoint cutting tools are fed into.
Often the workpiece will be turned so that adjacent sections have different diameters. The workpiece is rotated on the lathe while the tool is moved in linear directions. The spindle rotates at 500 rpm, and the tool is traveling at an axial speed of 200 mmmin. This paper contains a survey of the selected strategies of measurements concerning freeform surfaces which may be used during inprocess measurements of a workpiece on a cnc milling machine. A taper turning attachment consists essentially of a bracket or frame which is attached to the rear end of the lathe bed and supports a guide plate pivoted at the centre. Pdf tool wear investigation in cnc turning operation. Boring is the process to enlarge the hole which has drilled in an object.
Turning is one of the most common of metal cutting operations. In this article, you will learn about what are the different types of lathe machine operations performed on the lathe machine. Lathe machines are used in metalworking, woodturning, metal spinning, thermal spraying, glass working, and parts reclamation. Facing contour turning chamfering cutoff threading. Introduction to selecting turning tools iimportant decisions for the selection of cutting tools for standard turning operations the variety of shapes and materials machined on modern turning centers makes it imperative for machine operators to understand the decisionmaking process for selecting suitable cutting tools for each job. In this article we shall be considering the turning operation. The operation by which we remove the excess material from the workpiece to produce a coneshaped or a cylindrical surface. Turning a single point cutting tool removes material from a rotating workpiece to generate a cylindrical shape performed on a machine tool called a lathe variations of turning that are performed on a lathe. Turning is the operation of removing the excess material from the workpiece to produce a cylindrical surface to the desired length. Lathe machine operation turning universal science compendium. Drilling is an operation by which we can make holes in a job. Various operations are performed in a lathe machine other than plain turning. Lets discuss all lathe machine operations one by one as follows. Pdf modeling and analysis of turning process on lathe.
The general operations done with the lathe are grooving, turning, cutting, sanding and etc. Turning and lathe basics face to machine a flat surface, as in the end of a shaft in the lathe. Machining with a singlepoint tool can be done anywhere on the workpiece except near or at the location of the lathe dog. A lathe dog figure i178 clamped to the workpiece is driven by a drive, or dog, plate figure i179mounted on the spindle nose. General lathe operations smithy detroit machine tools. Start at low speed and allow the lathe to ramp up to operating speed. Taper turning operation carried out on lathe machine axibook.
With suitable attachments, the lather may be used for turning, tapering, form turning, screw cutting, facing, dulling, boring, spinning, grinding, polishing operation. Principal capabilities of the lathe are forming straight, tapered, or irregularly outlined cylinders, facing or radial turning cylindrical sections, cutting screw threads. Facing is the operation of machining the ends of a piece of work to produce flat surface square with the axis. Today the most common type of such automation is computer numerical control, better known as cnc. Centering facing turning chamfering knurling thread cutting drilling boring reaming spinning tapping parting off before continuing any operation in lathe we have to load the job and center it on the headstock spindle. The most commonly used insertholder combination for o. Jan 16, 2018 lathe machine operation education mission government job. Mastercam lathe delivers comprehensive turning software with powerful toolpaths and techniques. Adjust the tool support to the proper height and position for the work. Although there are several other types of lathes, this document will focus only on the manual lathe. Drilling is the process to drill a hole in an object.
Instructions to learn how to use a lathe the lathe is a machine tool used principally for shaping pieces of metal and sometimes wood or other materials by causing the workpiece to be held and rotated by the lathe while a tool bit is advanced into. Today we will study definition, parts, operation we perform on it, the types, specification, advantages, disadvantages, and application of lathe machine. The operation like turning, facing, grooving, knurling, threading and more, such operations are performed on this type of machine. Turning is used to reduce the diameter of the workpiece, usually to a specified dimension, and to produce a smooth finish on the metal. Generally, the size is determined by the following measurements. The lathe ways are precision ground surfaces and must not be used as tables for other tools and should be kept clean of grit and dirt. Lathe operations facing, form turning, radius turning, forming, taper turning b operations which are performed by holding the work by a chuck or a faceplate or an angle plate are. Machines performing this operation may bear different names engine lathe. The job held between the centre or a chuck and rotating at a required speed. Lathe is a machine tool which causes workpiece to revolve so that when cutting tool comes in contact with the workpiece it removes the metal in the form of chips. The job speed will be to 14 th of the job speed in turning operation. Precision tool room lathes are also known as standard manufacturing lathes and are used for all lathe operations, such as turning, boring, drilling, reaming, producing screw threads, taper turning, knurling, and radius forming, and can be adapted for special milling operations with the appropriate fixture. Pdf turning and lathe maranata parada sastra lubis.
The turret lathe is a lathe used extensively for the highspeed production of duplicate parts. A machine operation in which a work part is fed past a rotating cylindrical tool with multiple edges. What machining process is sued to create round shapes. Jun 19, 2014 turning on the lathe is one of the most common metalcutting operations. Operating instructions and parts manual woodturning lathe. Explain working of lathe, lathe specification and its functions explain taper turning methods explain different operations can be carried out on lathe. Switch off the lathe and ensure it has come to a complete standstill before making any adjustments.
Lathe machining work bench tutorial using the lathe machining workbench is similar to the mill machining workbench. Traditionally, turning is done manually on lathe machine which require constant supervision of operator on lathe machine, or on automated lathe machine which does not require continuous supervision. Turning can be done manually, in a traditional form of lathe, which frequently requires continuous supervision by the operator, or by using an automated lathe which does not. A single point cutting tool removes material from a rotating workpiece to generate a cylindrical shape. Turning is the removal of metal from the outer diameter of a rotating cylindrical workpiece. Check each lathe prior to operation for any missing parts or broken shear pins. Each lathe operation has got its own factors that need to be considered before doing the work. Adjust speed to suit the diameter of the work and turning operation.
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