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Define the Basic Components of an N.C System
The basic components of an N.C system are as follow:
a) Programmer of Instruction: - It is a set of direction which will tell the machine tool what to do. It is coded in numerical or symbolic form on some type of input medium such as one inch wide.
b) Machine controller unit (M.C.U):- It consists of the electronics and hardware that read and interpret the program of instruction and convert it in to mechanical action of the machine tool.
c) Machine tool or other controlled process: - It performs the useful work. A machine tool consists of the following.
1) Work table and work fixtures
2) Spindle
3) Cutting tools
4) Motors and controls for drives
5) Other auxiliary equipment needed in machining operation.
A gantry crane shown in figure above acts an auxiliary to bridge cranes. It is provided with wheels and can be moved from open place to another as per requirements.
design summarised of milling fixture
Maximum Bending Moment: The SF changes sign at A, among A and B and at B. Let a section XX at a distance x from the end C as illustrated in Figure SF at section XX, F x
Mash stitch welding An overlap of about 1.15 mm is kept and then the plates are squeezed flash by application of pressure at hot condition. Mash stitch welding is used in the
Q. Show the design of the control rooms? The design of the control rooms in any plant is very important. The control room operator(s) must be able to control and manage safety
The Center Mark Command We can use Center Mark command to annotate a circle or an arc with a cross at the center.Illustration above shows a center mark added to a circle quick
Determine the wire diameter of the inner spring: In a compound helical spring, the inner spring is arranged in and concentric with the outer one, but is 10 mm shorter. The out
Calculate force required for equilibrium: A member ABCD is subjected to the point loads P 1 , P 2 , P 3 an d P 4 as shown in the figure given below
A simply supported beam ABC with supports at A and B , 6m apart and with an overhang BC 2 metres long takes uniformly distributed load of 1.5 KN/metre length over the entair length
Characteristics of Adhesives and Adhesive Joints While an adhesive joint is created this has to show individual or several of given properties. (a) Mechanical strength again
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