To perform different lathe machine operations on a lathe, the workpiece may be supported and driven by any one of the following methods. Step turning a step turning operation is illustrated in. Heavy and stiff, with about twice as much slant on the teeth as a standard file. Lathe operations od1645 lesson 1task 1 headstock transmit power from the drive shaft to the spindle through an intermediate shaft. The lathe i t is a great convenience, even on a simple lathe, to be able to mark round components with the commonlyrequired numbers of divisions, such as four or six, as are necessary when making.
The working of the lathe machine changes with every operation and cut desired. If you maintain a clean work environment, make sure that tools are sharp and that parts are completed per the blueprints, you should not come across any problems while operating a cnc lathe. Make final adjustment by allowing, lathe to run for a few minutes. General lathe operations smithy detroit machine tools. This is done with a tool that applies a force on the material. The operation consists of passing a flat singlecut file over the.
Conclusion the objective of turning and milling is to remove material from a work piece to obtain a specific shape and improve surface finish. The operation involves feeding the tool perpendicular to the axis of rotation of the work piece. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. 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. This concise introduction to the lathe provides detailed coverage of this versatile machine and how it is used to perform a wide variety of metalworking operations. Lathe operation and maintenance modern machine shop books john g. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Machine shop manual sri jayachamarajendra college of. Turning is a machining process in which a cutting tool, typically a nonrotary tool bit, describes a helix toolpath by moving more or less linearly while the workpiece rotates usually the term turning is reserved for the generation of external surfaces by this cutting action, whereas this same essential cutting action when applied to internal surfaces holes, of one kind or another is. The first is an accurately shaped and mounted tool, because the thread cutting is a formcutting operation. Place these files extracted from mcam lathe getting started2017.
As early as 1569, wood lathes were in use in france. Turn on the lathe and set the speed to around 600 rpm. Facing operations leave a rather sharp edge on the end of the workpiece. Metal lathe do not use this machine unless the technician has instructed you in its safe use and operation and has given permission. Use a vacuum, brush or rake to remove metal cuttings only after the lathe has stopped moving and power has been disconnected. These tool bits are used for turning, facing, boring and other lathe operations. The sections of this manual are arranged in the order you must understand information to successfully complete a lathe operation. Machining operation in which work is fed past a rotating tool with multiple cutting edges axis of tool rotation is perpendicular to feed direction creates a planar surface. Notice lathe operation must be approved by supervisor for every use. Facing operation carried out on lathe machine axibook. Replace the half male center with a standard center after the facing operation, since the half. Most parts need multiple operations that are potentially on different machines. Looking for downloadable 3d printing models, designs, and cad files. Safety glasses must be worn at all times in work areas.
This file has a single cut, meaning the teeth of the file are cut diagonally in one direction across the length of the file. To safely perform a facing operation the end of the workpiece must be. Each setup sheet is for one particular operation, but wed also like to be able to access the other operations and see how they go together for a view of the overall process. The 8 lathe file is an 8 inch flat metal file tool that is perfect for finish lathe work, working well with both hard and soft metals. For this study guide a sharp, model 1440 engine lathe with will be. Operating a cnc lathe can be done with a keen sense of detail by making sure that all standard procedures are followed thoroughly. Csa footwear must be worn at all times in work areas. At the end we show the wrong way to drill to hole, and. Thread cutting on the lathe is a process that produces a helical ridge of uniform section on the workpiece. Standard operation procedure for a cnc lathe career trend. Turning and related operations cankaya universitesi. The lathe is a very versatile and important machine to know how to operate.
Face grooving produces grooves for applications such as oring seats. Keep floor around the lathe clean and free of oil and grease. South bend did a lot of things right, to earn their market share and reputation, and one of the smartest was to produce clear, wellillustrated, lowcost instructional materials describing not just how to set up and run their tools, but how to use them. Best practices for metal lathe turning smithy granite 3. Facing facing is machining the ends and shoulders of a piece of stock smooth. When a lathe cutting tool removes metal it applies considerable tangential i. Turning work is very dangerous when done by inexperienced persons. Lathe operation and maintenance modern machine shop books.
Lets discuss all lathe machine operations one by one as follows. A machine operation in which a work part is fed past a rotating cylindrical tool with multiple edges. A step turning operation is illustrated in the figure. Lathe files lathes files for finish lathe work on either hard or soft metals. If there is an abnormal amount of noise such as a gear rattling noise the gear clearance is too great, adjust by slightly unscrewing set screw e.
The part requires basic lathe operations such as facing, roughing, and finishing as well as. The 12 lathe file is a 12 inch flat metal file tool that is perfect for finish lathe work, working well with both hard and soft metals. Use the tailstock crank to advance the drill slowly into the end of the workpiece and continue until the conical section of the center drill is about 34ths of the way into the workpiece. Bahco manufactures a long angle lathe file, stocked at millers tooling pty ltd. Workpiece held between centres and tool driven by carriers and catch plates. If it seems to be a howling noise, the gear clearance is insufficient. Lathe operations od1645 lesson 1task 1 sliding gap feature, this lathe is similar to the floormounted engine lathe.
Lathe machine operations are turning operation, facing operation, taper turning operation, knurling operation, grooving operation with pdf download. Lathe machine also called engine lathe because the first type of lathe was driven by a steam engine. Jan 01, 2003 lathe operation and maintenance modern machine shop books john g. With the lathe running at fairly low speed, bring a smooth cut file up to the end of the workpiece at a 45 degree angle and apply a little pressure to the file. Turning a machining process in which a singlepoint tool remove material from the surface of a rotating work piece. Jun 28, 2017 lathe was actually the first machine tool which came into being as a useful machine for metal cutting. Manual of lathe operation and machinists tables atlas press company engineering department on.
Facing operation is for making the ends of the job to produce a smooth flat surface with the axis of operation or a certain length of a job. Take extra care because it involves reaching over rotating work. This haas cnc lathe manual contains multiple cnc programming examples in easy to understand way. Best practices for metal lathe turning smithy granite 3in. With every cut desired the speed, depth and feed of the lathe machine is changed for precision. Before these operations can be done, a thorough knowledge of the variable factors of lathe speeds, feeds, and depth of cut must be understood. Lathe safety and operation notice rules and guidelines listed on this page are only reminders. Lathe machine is also known as the motherfather of the entire tool family. The operation like turning, facing, grooving, knurling, threading and more, such operations are performed on this type of machine. Use the speedchange levers to shift the sliding gears on the drive shaft and the intermediate shaft to line up the gears in different combinations.
The cutting tool is feed into the work piece, which rotates about its own axis, causing the work piece to be formed to the desired shape. Heavy and stiff, with about twice as much slant on the teeth as. In selecting the proper location for your lathe, remember 1 that operation is from the apron side of lathe. A lathe operates on the principle of a rotating work piece and a fixed cutting tool.
Types of lathes lathe figure 71 is ideally suited for this purpose. This video will show you the best practices for metal lathe turning smithy granite 3in1 this video starts by providing some cardinal rules. Metalturning lathe built from stock parts the toolpost, toolpost slide and the actuating screw are shown in an exploded view at the lower right in figure 5 and are shown in more complete detail in figure 7, 8 and 9. Excellent for finish work the only way to file a barrel in a lathe p. A step turning operation is performed using a wide tool after the plain turning operation. Facing is the operation of machining the ends of a piece of work to produce a flat surface square with the axis. Before either operation is done, several parameters need to be determined. This is also used to cut the work to the required length. 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.
Never file lathe work unless the file has a handle. A facing operation on a lathe is when the operator makes a squaring cut on the end. Nov 16, 2011 founded in 1906 in south bend, indiana, south bend lathe, at one time, controlled almost half of the u. These factors differ for each lathe operation, and failure to use these factors properly will result in machine failure or work damage. The factors should be used properly so that one can avoid from mishandling and mishaps while performing any kind of lathe operation. Cuts faster than regular mill files and leave a smoother finish. Later sections will refer to skills discussed in previous sections. Pdf lathe machine operation lathe operations od1645 lesson 1task 1. In this assembly, the tool is moved in either direction by. Then either the tool or the work piece will move and material will be removed. This is performed by taking successive cuts with a threading toolbit the same shape as the thread form required. The lathe machine was adapted to metal cutting in england during the industrial revolution. Persons must read lab safety manual, machine manual, and be trained by wrl manager. The turret lathe is a lathe used extensively for the highspeed production of duplicate parts.
The following are some of the important parts of lathe machine. Variations of turning that are performed on a lathe. A trained lathes can be divided into three types for easy identification. This lathe file is 12 in length and flat with square edges. Keep working surface clean of scraps, tools and materials. 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 lathe i t is a great convenience, even on a simple lathe, to be able to mark round components with the commonlyrequired numbers of divisions, such as four or six, as are necessary when making squares and hexagons. Step turning a step turning operation is illustrated in the. Jul 29, 2017 lathe machine is a mechanical device in which the workpiece is rotated against cutting tool for producing cylindrical forms in the metal, wood or any other machinable material. Haas cnc lathe manual free download this is not only a haas operators manual but more than that. May 15, 2010 this video will show you the best practices for metal lathe turning smithy granite 3in1 this video starts by providing some cardinal rules of machining. Founded in 1906 in south bend, indiana, south bend lathe, at one time, controlled almost half of the u. The bench lathe may or may not have a poweroperated crossfeed drive.
If any filing is done on work revolving in the lathe, file left handed to prevent. Its a good idea to smooth this edge down with a file to give it a nice champfer and to avoid cutting yourself on it. 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. Lathe machine also called engine lathe because the. Facing is used to cut work to the desired length and to produce a surface from which accurate measurements may be taken. The turning processes are typically carried out on a lathe, considered to be the oldest of machine tools, and can be of different types such as straight turning, taper turning, profiling or external grooving. Those types of turning processes can produce various shapes of materials such as straight, conical, curved, or grooved workpieces. The lathe machine is one of the oldest and most important machine tools. The work is held in between the lathe centers or with the chuck and the tool is held at the height of the axis of the work. Lathe was actually the first machine tool which came into being as a useful machine for metal cutting. The depth of cut to obtain the step on the cylinder is provided by cross slide movement and feed by the carriage. Lathe machine seminar ppt with pdf report study mafia. In this operation, hold the job on headstock spindle using three or fourjaw chuck.
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