Test: Numerical Control of Machine Tools - 1 - Mechanical Engineering MCQ

Test: Numerical Control of Machine Tools - 1 - Mechanical Engineering MCQ

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10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering - Test: Numerical Control of Machine Tools - 1

Test: Numerical Control of Machine Tools - 1 for Mechanical Engineering 2024 is part of Topicwise Question Bank for Mechanical Engineering preparation. The Test: Numerical Control of Machine Tools - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Numerical Control of Machine Tools - 1 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Numerical Control of Machine Tools - 1 below.
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Test: Numerical Control of Machine Tools - 1 - Question 1

The following system of instructions is used on the tape of NC machine tools:

Detailed Solution for Test: Numerical Control of Machine Tools - 1 - Question 1

In NCmachine tools, the binary systems is used. In this system, the base of the system is 2 and only two characters, 0 and 1, are needed. The binary system is tedious to use in everyday life, but very suitable in the numerical control of machine tools.

Test: Numerical Control of Machine Tools - 1 - Question 2

The operation of NC machine tools is based on

Detailed Solution for Test: Numerical Control of Machine Tools - 1 - Question 2

Operation of NC machine tools is based on prepared programmes which consists of blocks or series of numbers in a coded language.

Test: Numerical Control of Machine Tools - 1 - Question 3

Conventional NC system is also known as:.

Test: Numerical Control of Machine Tools - 1 - Question 4

The criteria for selection of a CNC machine tool is

Test: Numerical Control of Machine Tools - 1 - Question 5

The main function of a spindle in CNC machine is

Detailed Solution for Test: Numerical Control of Machine Tools - 1 - Question 5

The main functions of the spindle are: (i) Centering the job or the tool (ii) holding the job or the tool (iii) rotating the job or.the tool

Test: Numerical Control of Machine Tools - 1 - Question 6

The following device is used for transmitting energy in CNC machine tools:

Detailed Solution for Test: Numerical Control of Machine Tools - 1 - Question 6

Conventional lead screw and its nut assembly is not suitable for CNC machine tools because of its lesser power transmitting capacity, lesser accuracy due to backlash and higher frictional forces. To avoid these problems, the recirculating ball screw and nut assembly is used as energy transmitting device in CNC machining

Test: Numerical Control of Machine Tools - 1 - Question 7

A CNC machine tool consists of a maintaining and repairing system. This system is known as

Test: Numerical Control of Machine Tools - 1 - Question 8

The method by which the control system calculates the intermediate points and speed of the motor, is known as

Test: Numerical Control of Machine Tools - 1 - Question 9

What is BLU in numerical control of machining?

Detailed Solution for Test: Numerical Control of Machine Tools - 1 - Question 9

Displacement are expressed in part programmes by integers. Each unit corresponds to the position resolution of the axes of motion and will be referred to as the basic length-unit (BLU). The BLU is the smallest length of motion that can be repeatably sensed in the machine

Test: Numerical Control of Machine Tools - 1 - Question 10

Miscellaneous function for coolant ON is

Detailed Solution for Test: Numerical Control of Machine Tools - 1 - Question 10

M 00 - Programme stop
M 01 - Optional stop
M 02 - End of programme
M 03-Spindle on CW
M 04 - Spindle on CCW
M 05 - Spindle off
M 0 8 -C o o la nt on
M 09 - Coolant off
M 17 - Chip conveyor on
M 18 - Chip conveyor off
M 30 - End of tape and tape rewind
M 39 - Auto recycl

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