Posted in Lathe Machine

What is Capstan Lathe Machine, Application & Technical Specification

A capstan machine is a processing machine used to make the same parts again and again. The cutting bits are mounted on a rotatable turret known as a capstan, which permits the client to rapidly change the introduction of the bits for slicing without needing to take off the first bit and afterward mount the second. A bit of crude material, off and on again known as a clear, is mounted into the capstan machine and is then spun at high velocity. The cutting apparatuses, some of the time known as blades, are then used to slice into the clear…

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Straight Turning Operation on Lathe Machine

Lathe machines are used to turn the work straight by making the work rotate about the lathe axis and by feeding the tool parallel to the lathe axis. In the straight turning procedure, a cylindrical surface is produced by the removal of excess metal from the work piece. The job is made to face the ends and drill at the centre and then mounted between the centers with the help of a lathe dog attached to the work piece. For this purpose, a properly ground right-hand turning tool is used. Basically, this tool is clamped on the tool post, ensuring…

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Center Lathe Machine Craft, Design & Processes

The centre lathe or metal turning lathe is a machine used to turn metal or plastic bar into cylindrical shapes. In addition there are my other operations that can be done on this type of lathe. The work, which usually rotates towards the operator, can be griped securely in a chuck, bolted to a face plate or set up between two centres. The cutting tool, mounted on a tool post on the top of the carriage can be moved along the bed or at right angles to it. The length ways movement (or traverse) of the cutting tool produces a…

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Accessories of Lathe and Their Functions

A general-purpose machine tool is basically comprised of power drive and kinematic system for the essential formative and auxiliary tool – work motions and a rigid body or structure to accommodate all the above. But several additional elements or devices called accessories are also essentially required for that machines’ general functioning, mainly for properly holding and supporting the workpiece and the cutting tool depending upon the type and size of the tool – work and the machining requirements. Before reading this, you should Know basic Information about lathe and Lathe specifications. 1. Chucks Workpieces are held to the headstock spindle…

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Work Holding Devices Used in Lathe Machine

The work holding devices are used to hold and rotate the workpieces along with the spindle. Different work holding devices are used according to the shape, length, diameter and weight of the workpiece and the location of turning on the work. They are: Chucks Face plate Driving plate Catchplate Carriers Mandrels Centres Rests Chucks Workpieces of short length, large diameter and irregular shapes, which can not be mounted between centres, are held quickly and rigidly in chuck.There are different types of chucks namely, Three jaw universal chuck, Four jaw independent chuck, Magnetic chuck, Collet chuck and Combination chuck. Three Jaw…

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Lathe Design; The Head-Stock Casting, The Spindle and The Spindle Cone

Design of head-stock for wooden bed lathes. Early design for use on a cast iron bed. An old New Haven head-stock. The arch form of the bottom plate. Providing for reversing gears. The Hendey-Norton head-stock. The Schumacher & Boye head-stock. The Le Blond head-stock. The New Haven head-stock. The arch tie brace of the new Hendey-Norton design. Generalities in describing a lathe spindle. Designing a spindle. Governing conditions. The nose of the spindle. Spindle collars. Proper proportions for lathe spindles. Large versus long bearings. Design of the spindle cone. THE subject of lathe design is continued by the consideration of…

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Lathe Design: The Bed and Its Supports #SecondPart

Continued From First Part It will have been noticed in the engravings of the cross sections or beds thus far given, that the “side plates” or outer walls have been uniform on the two sides and across the ends. Also, that the bed is very much strengthened by the track or flat upper member. To obtain a casting of nearly uniform shrinkage throughout, and to diminish as much as may be the unequal strains, as well as to add to the strength and stiffness of the bed, the lower edge has been re-enforced by an additional thickness for a short…

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Lathe Design: The Bed and Its Supports #FirstPart

The designer of lathes. The manufacturer’s view of a lathe. The proper medium. Cause of failure. The visionary designer. Conscientious efforts to improve in design. Design of the lathe bed. Elementary design. Professor Sweet’s observations. The parabolic form of lathe beds. The author’s design. Form of the tracks. Bed of the old chain lathe. The English method of stating lathe capacity. Method of increasing the swing of the lathe. The Lodge & Shipley lathe bed. Uniform thickness of metal in beds. Ideal form of bed. Cross-ties, or bars. Four Vs. Flat surfaces. Lathe bed supports. Height of lathe centers. Wooden…

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Classification of Lathes

The essential elements of a lathe. The bed. The head-stock. The tailstock. he carriage. The apron. The turning and supporting rests. The countershaft. Taper attachments. Change-gears. Classification applied to materials, labor accounts, and the handling of parts in the manufacture of lathes. The four general classes of lathes. The eighteen sub-divisions of these classes. The first class: hand lathes, polishing lathes, pattern lathes, spinning lathes and chucking lathes. The second class: engine lathes without thread-cutting mechanism, Fox brass lathes, forge lathes, and roughing lathes. The third class: complete engine lathes with thread-cutting mechanism, precision lathes, rapid reduction lathes, and gap…

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The Development of The Lathe Since the Introduction of Screw Threads

Origin of the screw thread. Ancient boring tools. Suggestions of the screw form. The “Worm Gimlet.” Making the first nuts. An old device for cutting threads in wood. Archimedes and his helical device for raising water. Jacques Berson’s French lathe. Joseph Moxan’s English lathes. The French lathe of 1772. John Maudsley’s English lathes. Maudsley’s slide-rest. Another French lathes. The use of a “master screw.” A form of slide-rest. An old-time worm and worm-gear. Simple method of developing the screw thread. Anthon Robinson’s triple-threaded screw. The many uses of the early lathes. An old “chain lathe.” Its detailed construction. Cutting left-hand…