Figure 12. Taper Turning Operation. True workpiece in a 4jaw chuck. 1. A dial or test indior should be used whenever a machined diameter must be aligned to within a thouhs of an inch. 2. Procedure: 3. Insert the workpiece in the 4jaw chuck and true it approximately, using either the chalk or surface gauge method.
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A jaw crusher has 2 jaws said to form a Vshaped at the top through which feed is admitted. One of the jaw is fixed in to the main frame and other is movable. The crushing faces are usually made of hard field Mn steel (1214%Mn, 1%C). The jaw crusher speed varies from 100400RPM. Gape: It is the distance between jaw plates at the fixed opening end.
· A sectional view of the singletoggle type of jaw crusher is shown below. In one respect, the working principle and appliion of this machine are similar to all types of rock crushers, the movable jaw has its maximum movement at the top of the crushing chamber, and minimum movement at the discharge motion is, however, a more complex one than .
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· A Lathe chuck is one of the most important devices in the lathe machine it is used for holding and rotating a piece of work while performing a lathe operation. The workpiece of short length and large diameter of irregular shape which cannot be conveniently mounted between centres are held quickly and rigidly in a chuck.
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· Four Jaw Chuck. It is also called Independent Jaw Chuck which consists of four jaws and each jaw can be moved separately by chuck 'key'. These jaws are reversible and have steps made on them, which can be used to mount workpieces or a job of different sizes.. This chuck is used to hold regular and irregular shaped jobs, heavy components and large diameter .
· Operations On LatheDetailed Facing: Facing is the process of making flat surfaces on a lathe. The job is held on a faceplate or chuck and the tool is fed at right angles to the bed to obtain flat surfaces. using a 4 jaw chuck you can face rectangular or oddshaped work to form cubes and other noncylindrical shapes. 35 36.
· The working principle of the jaw crushers is very simple. Powered by a diesel or gas motor, the jaw crusher brakes materials in a crushing chamber. The materials are pushed inside the chamber from the top opening and when crushed they are released through the bottom opening. The crushing power of the jaw crushers depends on the size of the chamber.
Three jaw or universal chuck; Collect chuck and ; Magnetic Chuck; Independent or fourjaw chuck: It is used for irregular shapes, rough castings of square or octagonal in such jobs, where a hole is to be positioned off the center. It consists of four jaws and each jaw is independently actuated and adjusted by a key for holding the job.
chaser for thread cutting operation. Lathe3 1. Which of the following can be effectively used for holding eccentric job? a) Four jaw chuck b) Three jaw chuck c) Both three jaw chuck and four jaw chuck d) Two jaw chuck Answer: a Explanation: Four jaw chucks is used for holding eccentric job because of good manual balancing capability of four ...
of measurements or for measuring operations. Material: or hardened steel. Size: 50 to 150 mm. Parallel Clamp It is a simple screw clamp with parallel jaws to hold small jobs for working on them. CClamp This is used to hold work against an angle plate or Vblock or any other surface, when gripping is required. It is also known as Gclamp.
Although jaw crushers are extensively used for a variety of materials, their operational characteristics are not well understood. This lack of understanding makes selection of the proper machine difficult. Hersam (1923) proposed a method for calculating capacities using a Dodgetype jaw .
As we all know, to perform a particular operation in any machine we need to use some attachments, mandrels and rests are one of them. The Mandrels and Rests both are generally used in Lathe machines to perform operations on cylindrical jobs.. Mandrels are used for hollow cylindrical jobs, where rests are used for solid cylindrical jobs.
The solid jaw of the vise will keep the work square in the plane parallel to the jaws. A solid square must be used to set the work square in the plane perpendicular to the jaws before the jaws of the vise are tightened. The end may then be machined to the required length. In taking a finishing cut, the speed should be increased. Operation # 2.
india jaw crusher operation cntract work. india jaw crusher operation cntract work. Jaw Crusher Heavy Equipment Rentals India, Construction . A jaw or toggle crusher consists of a set of vertical jaws, one jaw is kept stationary and is called a fixed jaw while the other jaw called a swing jaw, moves back and forth Jaw crushers are usually constructed in sections to ease the processget price
LATHE OPERATIONS OD1645 LESSON 1/TASK 1 precise lead screw for threading operations. It comes equipped with precision accessories such as a collet, chuck attachment, a taper attachment, and a micrometer stop. Therefore, work of a better class and of a more complete nature may be accomplished on a toolroomtype engine lathe.
· Work is held between two centers and rotates about its own axis. Thread cutting is an important operation where helical grooves are produced on the job by feeding the tool longitudinally on the rotating job. The longitudinal feed should be equal to the pitch of the grooves. Automatic movement of the carriage is required for constant pitch.
· 3Jaw Chuck: Used to hold work (material) to be machined. Compound Feed: For manually feeding cutting tools at an angle to the spindle. Saddle (or Carriage): Carries the tool holder and cross feed in A "Y" direction. Saddle / Carriage Manual . Feed Wheel: Moves the saddle in the "Y" direction. Used for diameter reduction operations. Quick Change Tool .
A Jaw Crusher is one of the main types of primary crushers in a mine or ore processing plant. The size of a jaw crusher is designated by the rectangular or square opening at the top of the jaws (feed opening). For instance, a 24 x 36 jaw crusher has a opening of 24" by 36", a 56 x 56 jaw .
Some work pieces, because of their size and shape, cannot be held and machined between lathe centers. Lather chucks are used extensively for holding work for machining operations. The most commonly used lathe chucks are the three jaw universal, four jaw independent, and the collects chuck. Threejaw universal chuck:
· 2. Operations Done By Holding The Work By A Chuck . Lathe machine operations performed by holding the work by a chuck or a faceplate or an angle plate are: Drilling: Drilling is the operation of producing a cylindrical hole in a workpiece. It is done by a rotating tool, the rotating side of the cutter, known as a drilling drill.