Lathe tool design

The Reed lathes. Their inch engine lathe. Flather la Engine Lathes. Part 2 Experience has demonstrated that with proper care on the part of the operator a box constructed in this manner will last for a very long time, and, if properly lubricated, that the babbitt metal will The carriage is gibbed on the inside and outside and has ample bearin Part 4 This company make a variety of lathes and lathe attachments and accessories, some of which are shown later on in this book, and under the appropriate heading, to which the reader's attention is direct Part 5 It will be noticed in the engraving of the front of the lathe that all movements, including those of reversing, are controlled by levers in the front of the apron, so that the operator need not, neces Part 6 The general arrangement and construction of the head-stock, and the gearing contained in the front end of the bed, is well shown in the longitudinal section in Fig.

Chapter XVI. Emmes change gear device. Le Blond engine lathes. The Le Blond lathe apron. Engine Lathes Continued. Part 2 While this establishment makes several types of lathes, it will be sufficient for our purpose here to introduce the regular engine lathe, and that of inch swing is taken as a good example and shown Part 3 The carriage is scraped to the full bearing of its entire length on the V's and is gibbed at both back and front to the outside of the bed.

It is made deep and strong and has power lateral and cross f Part 5 In addition to the above feature, the lathe is provided with a rotating indicator or chasing dial, located on the top of the carriage, which enables the operator to catch the thread quickly and proper Chapter XVII.

The American Tool Works Company's inch swing triple-geared engine lathe. The New Haven Manufacturing Company's inch swing tr Heavy Lathes. Part 2 The tail-stock is of ample dimensions with a bearing 26 inches long on the bed. It has the usual set-over screw for us Part 3 The feed is positive, by a series of gears on the head-stock, with the usual change-gears for operating the lead screw, which is splined for driving the apron mechanism. All sliding surfaces are hand A detailed description of its special features.

A roughing lathe built by the R. Le Blond Machine Tool Company. High-Speed Lathes. Part 2 The two groups of gears are of the ratio 2 to 1,1 to 1,1 to 2, and 1 to 4, which, in connection with the bank of gears mounted on the side of the head, gives a range of thread cutting from 2 to 32 per Part 3 The manufacturer of the lathe says: Our aim in its design has been to provide this power in such a manner that all the functions of the regular type would be retained, but the head would have wearing Part 4 The end thrust of the spindle is against the rear housing of the head-stock by means of a large cast iron collar keyed fast to the spindle, between which and the faced inside of the housing are interp Chapter XIX.

Special Lathes The F. Reed turret-head chucking lathe. Its special features. A useful turning rest. The Springfield Machine Tool Company's shaft-turning lathe. The three-tool shafting rest.

The driving mechanism, Special Lathes. Part 2 On this lathe, when arranged as above, it is only necessary to remove the shafting rest, replace the compound rest, disconnect the tumbler gear under the head-stock, and the lathe is ready to perform Part 3 The upper spindle is triple geared and has double the ratio of back gearing of the lower spindle, while the internal geared faceplate shown in the engraving is furnished as an extra and gives a ratio Part 4 The pulley to be turned is forced on a mandrel or arbor and held between centers in the usual way for obtaining good concentric work.

As to the method of driving the pulley, there is an equalizing fac Part 5 The outside grinder for general work is clamped directly upon the tool-slide and has a vertical screw adjustment. It is arranged so that an emery wheel can be used on either end, and there is a taper Chapter XX. Regular Turret Lathes Importance of the turret lathe. Its sphere of usefulness.

Classification of turret lathes. Special turret lathes. The monitor lathes. Its general design and const Regular Turret Lathes. Part 2 The indexing mechanism of the turret is of the greatest importance, and in this particular point the flat turret lathe seems to have an exceptional advantage. Its index pin is located directly under t Part 3 Two sets of independent adjustable stops are provided for each face of the turret, one operating with the longitudinal and the other with the cross travel of the carriage.

When the general work which Part 5 To give the jaws a uniform gripping pressure upon the work, regardless of the variation in size from standard, provision is made for first bringing them into contact with the bar by operating a lever, Part 6 The carriage is provided with a turret tool-post carrying four tools, any one of which may be instantly brought into position for cutting.

These tools are independently adjustable as to height. The cr Chapter XXI. Special Turret Lathes The R. Le Blond triple-geared turret lathe. General description. The Springfield Machine Tool Company's inch engine lathe with a turret on the bed. Its general dimensions. Special Turret Lathes. Part 2 These figures will give a good idea of the substantial design of this device, which was evidently intended for heavy work and hard usage.

It is very important that all parts of a turret, of whatever k Part 3 The turret is very heavy and well supported by the turret slide, upon which it is pivoted, and a long base slide or saddle. It is run forward and back by a capstan or pilot wheel with long levers givi Part 4 The top slide is square gibbed and adjusted by a taper gib. The turret base is securely clamped in any position on the bed by two eccentric clamps operated by a wrench from the front of the turret.

Chapter XXII. Electrically Driven Lathes System of electric drives. Principal advantages of driving lathes by electricity. Group drive versus individual motor system. Individual motor drives preferable for medium and large sized lathes.

Electrically Driven Lathes. Part 2 A mechanical reverse is provided and may be operated from the carriage of the lathe so that the operator can start, stop, and reverse the direction of the spindle without stopping the motor.

This is a Part 3 At the front end of the plate there is carried a short-throw cam which allows the plate a slight drop and consequent loosening of the belt when it is desired to shift from one step of the cone to anot Placing the Lathe.

Plan of Small Shop. Line Shaft Size and Speed. Power Needed to Drive Lathes. The I hit the last pin one too many times and got a small crack in the wood…. This gets down to clean wood and it evens out the brass pins. Then I used the disk sander to round off the corners and the wood end of the parting tool. Being excited, I went to the wood lathe to try out the new parting tool. I was working on a handle for a gouge blade. As it was spinning I slowly entered into the wood and ………it moaned and groaned and burned!

After taking 5, I took a look at the Sorby parting tool that I was modeling I was modeling and noticed my angles were off. I reground both the top and bottom angle and tried it again. It cut like butter and ash is pretty hard.

So if you try making one of these pay attention to the grind angles and pay attention to how you grind the angles. Then try sharpening only on side, try just touching the bottom up, and try just grinding the top angle. The principal of lathe machine is that it holds the work between two strong supports called as centers or chuck which revolves. The chuck is mounted on the main spindle of the machine.

The cutting tool is rigidly supported in the tool post and it is fed against the rotating job. The job rotates in the axis and the tool moved either parallel or to an inclination with the axis as such a cylindrical, taper, square and spherical surface is produced. Now we are introducing a hexagonal cutting on lathe machine.

The cutting tools revolve around its own axis. The mechanism we used in this is a gear mechanism which helps the chuck to revolve and the cutting tools, a motor which helps to give the power to run this whole machine.

This whole product is made by casting and pattern making and machining process. A lathe may or may not have a stand or legs , which sits on the floor and elevates the lathe bed to a working height. Some lathes are small and sit on a workbench or table, and do not have a stand.

Almost all lathes have a bed, which is always a horizontal beam although CNC lathes commonly have an inclined or vertical beam for a bed to ensure that chips, falls free of the bed.

Woodturning lathes specialized for turning large bowls often have no bed or tail stock, merely a free-standing headstock and a cantilevered tool rest. At one end of the bed almost always the left, as the operator faces the lathe is a headstock. Clearance angle is given at all the sides of the tool. For the recessing groove cutting edge, the longitudinal feed is employed. The front clearance angle depends upon the bore of the work.

A parting off tool is normally forged and used as bits for cemented carbide tipped tools. Parting off tool is made as narrow as possible to remove the minimum of metal. The width of the cutting edge range from 3 to 12 mm only. The length of the cutting tool which inserts into the work should be slightly longer than the radius of the bar stock being machined. As the tool penetrates deep into the work, clearance is provided all around the tool cutting edge to prevent it from rubbing against the work surface.

As the tool is purely ended cutting it has no side rake slight back rake is provided on the tool to promote an easy flow of the ships. A right-hand tool is shown in the figure. Is that which is fed from lathe bed, i. A right-hand tool is formed on its left-hand end when viewed from the top with its nose pointing away from the operator.

The left-hand tool is shown in the figure. Is that which is fed from the Left to the right-hand end of the lathe bed, i. The left-hand tool is used for left-hand thread cutting operation or turning operation which leaves a shoulder on the right-hand end of the workpiece.

A left-hand tool has its cutting edge formed on its right-hand end when viewed from the top with its nose pointing away from the operator. A round nose turning tool sown in the figure.

Maybe fed from left to the right or from right to the left-hand end of the lathe bed away. For this reason, they have no back rake and side rake.

In some cases, a small back rake is provided on the tool. A round nose turning tool is usually used for finish turning operation. If you found this article helpful please share with your friends.

Download PDF. Email Address. Saif M. He completed his engineering studies in and is currently working in a large firm as Mechanical Engineer. He is also an author and editor at www. Skimming info I really liked what you had posted and wud Iike to get on any subscription list you may have so please add me to a mailing list or email list you put out.

Thanks Mike.