GATE PI
Machine Tools and Machining
Previous Years Questions

## Marks 1

Consider the following statements. $$(P)$$ Computer aided process planning $$(CAPP)$$ takes input from material requirement plan $$(MRP).$$ $$(Q)$$ Pr...
In Computer Aided Process Planning, determination of process sequence for manufacture of any part design without predefined standard plans is known as
In an open loop, point-to-point controlled $$CN$$ drilling machine, a stepper motor, producing $$200$$ angular steps per revolution drives the table o...
A $$CNC$$ vertical milling machine has to cut a straight slot of $$10$$ $$mm$$ width and $$2$$ $$mm$$ depth by a cutter of $$10$$ $$mm$$ diameter betw...
The interpolator in a $$CNC$$ machine controls
$$NC$$ contouring is an example of
$$FMS$$ is well suited to mass scale manufacturing.
In $$DNC$$ each machine tool is controlled by a dedicated computer.
$$FAPT$$ is a part programming language.
Control of group of $$NC$$ machines by a supervisory computer is known as ............... control.
Feed motion can be provided with stepper motors in $$CNC$$
Use of a robot for spray painting is primarily justified for improved.... ....... .... A ...... and reduced......... B.................... A. producti...
The most common interpolation methods in continuous path $$NC$$ machining are
If the $$z$$-axis & $$x$$-axis of $$CNC$$ lathe are provided with straight line controls, it is possible to carry out

## Marks 2

The preparatory and miscellaneous codes used in $$CNC$$ part programming and the functions are given in the Table The correct combination of code an...
In a numerical control $$(NC)$$ machine positioning system, the measures of precision are expressed by considering a single axis as shown in the Figur...
A single axis $$CNC$$ table is driven by a $$DC$$ servo motor that is directly coupled to a lead screw of $$5$$ $$mm$$ pitch. The circular encoder att...
Match the linear transformation matrices listed in the first column to their interpretations in the second column. ...
In a Flexible manufacturing system, the Automated Guided Vehicles $$(AGV)$$ move at a speed of $$50$$ $$m/min,$$ cover an average distance of $$150$$ ...
Each axis of $$NC$$ machine is driven by a stepper motor drive with a lead screw. The pitch of lead screw is $$p$$ $$mm.$$ The step angle of stepper m...
A $$CNC$$ instruction $$G91\,\,\,G01\,\,\,X30\,\,\,Y40\,\,\,F100$$ commands the movement of tool along the path at a feed rate of $$100mm/min$$ $$(G9... In a$$CAD$$package, mirror image of a$$2D$$points$$P(5, 10)$$is to be obtained about a line which passes through the origin and makes an angle o... For a$$3$$-axes$$CNC$$table, the slide along the vertical axis of the table driven by a$$DC$$servo motor via lead screw nut mechanism. The lead s... The total angular movement (in degrees) of a lead screw with a pitch of$$5.0mm$$to drive the work table by a distance of$$200mm$$in a$$NC$$machi... A titanium sheet of$$5.0mm$$thickness is cut by wire cut$$EDM$$process using a wire of$$1.0mm$$diameter. A uniform spark gap of$$0.5mm$$on bot... A stepper motor has$$150$$steps. The output shaft of the motor is directly coupled to a lead screw of pitch$$4mm,$$which drives a table. If the fr... Suppose point$$P1$$in$$APT$$(Automatically programmed Tool) programming is coded by statement$$P1 = POINT/XSMALL,\,\,\,INTOF,\,\,\,LN1,\,\,CR1$$... In a$$CNC$$feed drive, a stepper motor with step angle of$$1.8deg$$drives a lead screw with pitch of$$2mm.$$The basic length unit$$(BLU)$$for ... The geometric transformation specified by$$\left[ {x'\,\,y'\,\,1} \right] = \left[ {x\,\,y\,\,1} \right]\left[ {\matrix{ {0.5} & 0 & 0 \...
In a $$CAD$$ package, a point $$P(6, 3, 1)$$ is projected along a vector $$v(-2, 1, -1).$$ The projection of this point on $$X-Y$$ plane will be
Complete the manual part program for drilling a hole located at point $$(20, 20)$$ from the target point . The depth of the hole to be drilled is $$1... Match the following ... Consider the following characteristics:$$1.$$Single machine tool.$$2.$$Manual materials handling system$$3.$$Computer control.$$4.$$Random s... Given that the notations of robot joints are$$L$$-linear,$$O$$-orthogonal,$$R$$-rotational,$$T$$-twisting, and$$V$$-revolving, the anatomy of a ... For machining the circular arc shown in the figure below on a$$NC$$machine, the interpolation parameters$$(I.K)$$and the incremental movements in ... When$$3-2-1$$principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are rest... Match the following ... Match the following ... Match the following ... The component development and manufacturing activities when assisted by a computer are: Computer Aided Graphics$$(CAG), CAD, CAM, CAPP$$and Computer... A$$DC$$servomotor is directly driving an$$NC$$table. The pitch of the lead screw of the table is$$5mm.$$The motor rotates at$$100rpm\$...
$$A\,\,2{1 \over 2}\,\,$$ control in a typical $$CNC$$ machine provides
EXAM MAP
Joint Entrance Examination