Posted by mechlook info on June 8th, 2012 10:32 AM | 33 Comments Thread Cutting on Lathe
On lathe, internal and external threads are cut either with the help of a threading tool or with the help of tap and die respectively. While cutting threads with the help of a tool, the following requirements ...
Posted by mechlook info on June 8th, 2012 09:26 AM | 74 Comments Work that cannot be readily mounted between the lathe centres is usually held in a chuck. Many machining operations can be performed on work held in a chuck, such as threading, boring, turning etc.
Independent (4-jaw) chuck is used more than ...
Posted by mechlook info on June 8th, 2012 09:25 AM | 68 Comments Workpieces which cannot be turned between centres or chucked because of their unusual shapes, may be clamped to a faceplate, or mounted on an angle plate bolted to a faceplate, so that the surfaces to be worked are concentric with ...
Posted by mechlook info on June 8th, 2012 09:25 AM | 43 Comments It is the lathe operation of finishing the ends of the work, to make the ends flat and smooth and to make the piece of the required length. For this purpose, usually the work is held in a chuck. If ...
Posted by mechlook info on June 8th, 2012 01:37 AM | 47 Comments The steady rest is used when a long piece is machined or drilled at its end by holding the job in a chuck. It avoids the undue deflection of the job at the other end (Refer Fig. 12-11).
Posted by mechlook info on June 7th, 2012 10:34 AM | 35 Comments
Forming tools are also used for turning where short external tapers are required. The edge of the tool must be exactly straight if the work is to be accurate. It may be noted that this method is applicable for short ...
Posted by mechlook info on June 6th, 2012 10:35 AM | 37 Comments This attachment is confined to give external tapers only. It is bolted on the back of the lathe and has a guide bar which may be set at the desired angle or taper. As the carriage moves along the bed ...
