(a) Rectilinear generatrix and directrix. (b) Directrix perpendicular to the plane of generatrix. (c) Directrix in the plane of generatrix. surface can be produced by. The Generatrix and Directrix, tool and the work and their motions generally remain interconnected and in different way for different machining. Tag: Concept of Generatrix and Directrix. Mechanical Engineering: Basic working principle, configuration, specification and classification of.

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If the thickness of the chip produced is 0.

Option A is correct A fusion welding process using heat without the addition of filler metal to join two pieces of the same metal is called Autogenous Welding. The value of n always lies between 0 and 1. Option D is correct In increment system if we go from point P to point Q, than P is assumed generatrid the origin or 0,0 coordinate and with respect P as 0,0 that you need to define the coordinate of Q.

The strain hardening exponent n of stainless steel SS with distinct yield and UTS values undergoing plastic deformation is. In the expanded polystyrene casting process, a sand mold is packed around a polystyrene pattern representing the metal casting to be manufactured.

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Option C is correct. So option B is correct Go To Top 6. If the center of the arc is at 20, 10 and the machine has incremental mode of defining position coordinates, the correct tool path command generafrix.

In full mould cavity-less casting process, the pattern is made of. The diameter of the taper is 80 mm at one end and 65 mm at the other. If the taper is made by tailstock set over method, the taper angle and the set over respectively are. Also according to incremental system assuming 20,20 as origin 0,0we need to move in x direction and in y direction to reach 10, Option A is correct The generafrix is made of expanded polystrene.

Production GATE 2015, Set-3

In increment system if we go from point P to point Q, than P is assumed as the origin or 0,0 coordinate and with respect P as 0,0 that you need to define the coordinate of Q. Option C is correct Note: The pattern is not removed, and the molten metal is poured into the pattern which is vaporized from the heat of the metal.

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The coordinates of point Q in the incremental system of defining position of a point in CNC directri program will be. In a machining operation, if the generatrix and directrix both are straight lines, the surface obtained is.

So option B is correct. A shaft of length 90 mm has a tapered portion of length 55 mm. Which two of the following joining processes are autogeneous?

Generatrix – Wikipedia

A fusion welding process using heat without the addition of filler metal to join two pieces of the same metal is called Autogenous Welding. In a CNC milling operation, the tool has to machine the circular arc from point 20, 20 to 10, 10 at sequence number 5 of the CNC part program. The liquid metal takes the place of the vaporized polystyrene and the casting solidifies in the sand mold. A drill is positioned geenratrix point P and it has to proceed to point Q.