Lathe machine machine tool interview question and answers. Construction the design of lathes can vary greatly depending on the intended application. The normal cutting operations are performed with the cutting tool fed either parallel or at right. A sdvosb service disabled veteran owned small business. The inner details of apron mechanism is shown in figure 2. Power source switches with fuse must be set up in the lathe and electric circuit,the wire of the lathe must be ground connected,too. Mounting lathe on floor stand mounting lathe on leveling lubrication lubrication chart. A capstan lathe is a production machine that combines the features of the basic lathe along with a capstan style tailstock. Your lathe can cut a broad range of thread pitches. The premier source of parts and accessories for mini lathes. Note the employment of the small index post and elevating screws in the toolpost to secure the correct height for each tool. Jan 07, 2016 9102014 18 feed reverse mechanism using bevel gear mechanism constructional details 1 headstock spindle 2 spindle gear 3 driver gear keyed to stud shaft 7 5 gear on the lead screw 6 8, 10, 12 bevel gears with equal no. Once youve determined which parts you need, please fill out the parts request form.
In order to reach all essential headstock parts, first loosen the two thumb screws s49 in top cover casting. The 1943 hendey 16x30 lathe began having problems with the half nuts not fully engaging and so i pulled the apron off to see if there was an adjustment that might fix things. Feb 19, 2017 this video explains the apron mechanism mounted over the carriage in a lathe machine. Each lathe is operated and thoroughly tested before it leaves the factory. Sep 15, 2016 this mechanism drives the carriage of the lathe machine. Lathe operations od1645 lesson 1task 1 sliding gap feature, this lathe is similar to the floormounted engine lathe. Apron thread chasing dial compound k727 quick change carriage fig. Nov 23, 2012 to answer your question it will be difficult to differentiate meritsdemerits because as such in apron mechanism it is only the design itself is merit or demerit. Lathe machine is a basic machine which is used in every metal forming industries.
The lower part of the carriage is termed the apron in which there are gears to constitute apron mechanism for adjusting the direction of the feed. The lathe s cutting tool is steadied by the carriage, giving the craftsmen the freedom to do his work. Here we will provide information about distinct machines related to manufacturing industry. From this crude begging and over a period of more than two centuries, the modern engine lathe has evolved. If there is a particular document that is not available for download on our website, please contact us. Us patent 1,972,373 clutch mechanism for lathe aprons was issued to constant bouillon of torrington, ct. The apron is a doublewalled, onepiece casting in which all shafts and gears are supported at both ends. Then, in 1950 servo mechanism was used to control the lathe machine. Lathe machine machine tool interview question and answers lathe machine interview,viva,oral questions with answers for mechanical engineers, technical question and answers 1. The carriage includes the apron, saddle, compound rest, cross slide, tool post, and the cutting tool. When contacting us for parts requests, please provide your machines model and serial number. The turret lathe is a lathe used extensively for the highspeed production of duplicate parts.
My lathe had sat unuseduntouched for over 12 years. Feed mechanism in lathe gear clutch free 30day trial. The lathe is still strapped down on my truck and there is not enough light out. Headstock on the front of the headstock are a dial and two levers for selecting the entire range of 36 spindle. These welldesigned drive systems, eventually fitted into more modernlooking stands, remained largely unchanged until production finished. Lathe feeding and apron mechanism gear machines scribd. The lower part of the carriage is termed the apron in which there are gears to constitute apron mechanism for adjusting the direction of the feed using clutch mechanism and the. Jul 29, 2017 it also houses necessary transmission mechanism for different speeds. Cone pulley and back geared drive explained youtube. Design and fabrication of mini wood lathe machine amisha kolhatkar1. It can be moved by hand or by power and can be clamped into position with a locking nut. A lathe machine is a machine tool that is used to remove metals from a workpiece to give a desired shape and size. It is also used to provide power feed to the carriage during thread cutting through two half nuts. It is useful in providing power and hand feed to both carriage.
The lathe is a machine tool which holds the workpiece between two rigid and strong supports called centers or in a chuck or face plate which revolves. These machines consist of at the least a headstock, bed, carriage, and tailstock. A lathe machine is used to machine cylindrical work piece which is 360 degree symmetrical form the axis of. The apron, anchored to front of carriage, contains the power cross and longitudinal feed. Lathe machine is one of the oldest machine tools in the production machine this machine is also known as the mother of all machines. Splined shaft k will be rotating from lead screw and gears f and g will be. Apron is attached to the carriage and hangs over the front side of the lathe bed. This mechanism is involved in the feed and crossfeed motion in a lathe. Lathe machines are used in metalworking, woodturning, metal spinning, thermal spraying, glass working, and parts reclamation. The function of the carriage is to carry and move the cutting tool.
View and download little machine shop mini lathe user manual online. Before the lathe is operated the headstock and apron must be filled to the proper level as indicated by the gauges. Craftsman 1012890010 lathe manual lost creek machine inc. It sits across the lathe ways and in front of the lathe bed. It supports the main spindle in the bearings and aligns it properly. Lathe feeding and apron mechanism free download as powerpoint presentation. The basic lathe that was designed to cut cylindrical metal stock has been developed further to produce. The wider bolt pattern is for the 7x12 lathe, while the narrower bolt pattern is for the 7x10 lathe. Capstan ramtype lathe the modern name for a capstan lathe used in industry is a ramstyle turret lathe. This video explains the apron mechanism mounted over the carriage in a lathe machine. Head stock is situated at the left side of lathe bed and it is the house of the driving mechanism and electrical mechanism of a lathe machine tool. This invention pertains to improvements in lathe apron mechanism, more particularly in lathe aprons of a character shown. When the spindle gear rotates,the lead screw and feed rod will rotate through tumbler gears. The carriage consists of five different components, which include the compound rest, crossslide, apron, tool rest and saddle.
Lathetypes, parts, feed mechanisms, specifications,lathe. Working principle of lathe machine engineering tutorials. Introduction, type, construction of simple lathe, mechanism and attachments for various operations, machine specifications, basis for selection of cutting speed, feed and depth of cut, time estimation for turning operations such. Lathe machines are used in metalworking, woodturning, metal spinning, thermal spraying, glass working, and parts reclamation the various other operations that you can perform with the help of lathe machine can include sanding, cutting, knurling. These components function in conjunction to allow the cutting tool to be used to slide into place. I filled the apron with diesel fuel and marvel mystery oil dont laugh, its got a gum cutter in it. Various types of related machines are also covered here. While doing operation of drilling using tailstock mechanism, the forces acting more while performing operation and it will increase with respect to increase in diameter of drill. The handwheel runs on a stud screwed into the apron.
The lathes cutting tool is steadied by the carriage, giving the craftsmen the freedom to do his work. Feed mechanism is the combination of different units through which motion of headstock spindle is transmitted to the carriage of lathe machine. It also houses necessary transmission mechanism for different speeds. Craftsman 1012890010 lathe manual lost creek machine. As has happened on your lathe, the oil pump plunger on the apron stuck on my lathe. The lathe is a machine tool used principally for shaping pieces of metal and sometimes wood or other materials by causing the work piece to be held and rotated by the lathe while a tool bit is advanced into the work causing the cutting action. The e type had eight handswitched speeds whilst the u type offered a quickchange mechanism, controlled by two external levers that could be moved whilst the lathe was running. These are explained mech anism by mechanism in the section which follows. May 07, 2016 today we will learn about lathe machine parts, its operation and working. Lathe machine mechanism information about how it works and its structure.
Given the proper care, a south bend lathe will last a lifetime. Two of the many speed changing mechanisms in a conventional lathe headstock has been explained in this video with the help of 3 dimensional models. Bevel gear feed reversal mechanism the tumbler gear mechanism is not rigid in construction and cannot be used in modern heavy duty lathe. Today we will learn about lathe machine parts, its operation and working. Quick change gear box the mechanism within the quick change gear box transmits motion from the main spindle in the headstock to the feed rod. It holds the job on its spindle nose having external screw threads and. Introduction, type, construction of simple lathe, mechanism and attachments for various operations, machine specifications, basis for selection of cutting speed, feed and depth of cut, time estimation for turning operations such as facing, step turning, taper turning, threading, knurling.
In fact, with the standard change gears, you can cut many more thread pitches than. Quickchange mechanism determines the rate of ro tation of lead screw in relation to the rpm of the spindle. And of course lubrication holds the key point here. These are high resolution images, so it is possible to zoom in on to see the apron and top of carriage up close. Apron mechanism transmission mechanics clutch scribd. Gurdeep sir what type of ansys analysis can be done on lathe apron plz tell me sir. During autofeed the conical clutch sticks inside the worm wheel. Metal turning lathe model numbers catalog numbers 2890 2891 the model number will be found on a plate attached to the right end of the bed. Covering drilling machine, lathe machine, milling machine, hacksaw machines and many more other tools.
After wire connection,then input the power source by power source button to change the spindle in low speed,check the spindle rotating direction by operating the startlever in the right side of apron. How to order repair parts all parts listed herein may be ordered through sears, roebuck. Many of our lathes that have been in constant use for ten to fifteen years are as accurate as the day they left the factory. Expired lifetime application number publication date 18891231 18891231 application granted. It is combination of many parts which works together to perform a desire function. The lathe apron contains the controls, gears and other mechanism for moving the carriage along the bed.
This mechanism is involved in the feed and crossfeed. It is useful in providing power and hand feed to both carriage and crossslide. Now we have the most advanced form of the lathe machine which is the cnc lathe machine. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. Layout diagram of feed drive 9102014 22 apron mechanism 1 lead screw. Always mention the model number in all cor respondence regarding the craftsman lathe or when ordering repair parts. Apron mechanism apron is attached to the carriage and hangs over the front side of the lathe bed. Accessories mounted to headstock spindle are 34 jaw chuck, lathe center, and lathe dog, collect chuck, face plate, and magnetic chuck. Ill have to wait until tomorrow morning to look at the bull gear mechanism. This invention pertains to improvements in lathe apron mechanism, more particularly in lathe aprons of a character shown in copending application serial no. Today we will study definition, parts, operation we perform on it, the types, specification, advantages, disadvantages, and application of lathe machine. The premier source of parts and accessories for mini.
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