Exam Details
| Subject | cnc machines | |
| Paper | ||
| Exam / Course | diploma engineering | |
| Department | ||
| Organization | Gujarat Technological University | |
| Position | ||
| Exam Date | May, 2018 | |
| City, State | gujarat, ahmedabad |
Question Paper
1/3
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER 6(NEW) • EXAMINATION SUMMER 2018
Subject Code: 3362003 Date: 01-May-2018
Subject Name: CNC Machines
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1
Answer any seven out of ten.
14
1.
Write the function of M03 and M05.
M03 M05
2.
Write code to ON and OFF coolant.
3.
What is Rapid positioning?
4.
Write code for cutter compensation.
5.
Write a code for circular interpolation C.W and C.C.W.
6.
Draw the symbol of machine zero and reference zero.
7.
List the types of ball-Screw.
8.
Define N.C Machine.
9.
List the types of 'D.N.C'.
10.
List the types of machine tool maintenance.
Q.2
List down the tools required for CNC maintenaList down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintenaList down the tools required for CNC maintena List down the tools required for CNC maintenaList down the tools required for CNC maintena nce. nce.nce.
03
OR
Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example.Explain SUB program with suitable example.Explain SUB program with suitable example. Explain SUB program with suitable example.Explain SUB program with suitable example.
03
Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut?
03
OR
2/3
Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for selecting selecting selecting selecting selecting work holding work holding work holding work holding device? device? device?
03
Write Write Write down check list down check list down check list down check list down check list for for daily maintenance daily maintenance daily maintenance daily maintenance daily maintenance daily maintenance daily maintenance of CNC lathes.CNC lathes. CNC lathes.CNC lathes.
04
OR
Classify CNC machine.Classify CNC machine. Classify CNC machine. Classify CNC machine. Classify CNC machine.Classify CNC machine.Classify CNC machine.
04
Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83.Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83.Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83.
04
G98 G99 G83
OR
Write short note on ATC.Write short note on ATC. Write short note on ATC. Write short note on ATC.Write short note on ATC.
04
Q.3
Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code.
03
3
M06, M30 M04
OR
List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine.
03
Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code.
03
G00, G01 G00, G01 G02
OR
List the information to do process planning.List the information to do process planning. List the information to do process planning. List the information to do process planning. List the information to do process planning. List the information to do process planning. List the information to do process planning.List the information to do process planning. List the information to do process planning.List the information to do process planning. List the information to do process planning.
03
With neat sketch explain close loop and open conWith neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open conWith neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open conWith neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open con trol system. trol system.
04
OR
What is Point to point Continuous motion control?What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control?
04
Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control.
04
OR
Write short note on APC.Write short note on APC. Write short note on APC. Write short note on APC. Write short note on APC.
04
Q.4
List the different types of canned cycle.
03
OR
Definition and functio Definition and functio Definition and functio Definition and functio Definition and functio Definition and functio Definition and function of C. N.machine n of C. N.machinen of C. N.machinen of C. N.machine
03
Write Write Write Definition Definition Definition and definition of N.C. machineand definition of N.C. machine and definition of N.C. machine and definition of N.C. machine and definition of N.C. machine and definition of N.C. machineand definition of N.C. machineand definition of N.C. machine
04
OR
Draw the structure of Process planning. Draw the structure of Process planning.Draw the structure of Process planning. Draw the structure of Process planning. Draw the structure of Process planning. Draw the structure of Process planning. Draw the structure of Process planning.Draw the structure of Process planning. Draw the structure of Process planning.Draw the structure of Process planning. Draw the structure of Process planning.
04
Selection criteria for C. N.machine.Selection criteria for C. N.machine.Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine.Selection criteria for C. N.machine.Selection criteria for C. N.machine.
07
3/3
Q.5
Write down advantages of C.N.C Machine.
04
Write down disadvantages of C.N.C Machine.
04
Write the difference between N.C and C.N.C machine.
03
Write the difference between lath machine and CNC machine.
03
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER 6(NEW) • EXAMINATION SUMMER 2018
Subject Code: 3362003 Date: 01-May-2018
Subject Name: CNC Machines
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1
Answer any seven out of ten.
14
1.
Write the function of M03 and M05.
M03 M05
2.
Write code to ON and OFF coolant.
3.
What is Rapid positioning?
4.
Write code for cutter compensation.
5.
Write a code for circular interpolation C.W and C.C.W.
6.
Draw the symbol of machine zero and reference zero.
7.
List the types of ball-Screw.
8.
Define N.C Machine.
9.
List the types of 'D.N.C'.
10.
List the types of machine tool maintenance.
Q.2
List down the tools required for CNC maintenaList down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintena List down the tools required for CNC maintenaList down the tools required for CNC maintena List down the tools required for CNC maintenaList down the tools required for CNC maintena nce. nce.nce.
03
OR
Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example. Explain SUB program with suitable example.Explain SUB program with suitable example.Explain SUB program with suitable example. Explain SUB program with suitable example.Explain SUB program with suitable example.
03
Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut?Why double nut is preferred instead of single nut? Why double nut is preferred instead of single nut?
03
OR
2/3
Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for Which criteria are required for selecting selecting selecting selecting selecting work holding work holding work holding work holding device? device? device?
03
Write Write Write down check list down check list down check list down check list down check list for for daily maintenance daily maintenance daily maintenance daily maintenance daily maintenance daily maintenance daily maintenance of CNC lathes.CNC lathes. CNC lathes.CNC lathes.
04
OR
Classify CNC machine.Classify CNC machine. Classify CNC machine. Classify CNC machine. Classify CNC machine.Classify CNC machine.Classify CNC machine.
04
Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83.Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83.Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83. Give the difference between G98 and G99 using G83.
04
G98 G99 G83
OR
Write short note on ATC.Write short note on ATC. Write short note on ATC. Write short note on ATC.Write short note on ATC.
04
Q.3
Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code. Give the function of M06, M30 and M04 code.
03
3
M06, M30 M04
OR
List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine. List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine.List the different types of zero used in C.N.C machine.
03
Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code. Give the function of G00, G01 and G02 code.
03
G00, G01 G00, G01 G02
OR
List the information to do process planning.List the information to do process planning. List the information to do process planning. List the information to do process planning. List the information to do process planning. List the information to do process planning. List the information to do process planning.List the information to do process planning. List the information to do process planning.List the information to do process planning. List the information to do process planning.
03
With neat sketch explain close loop and open conWith neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open conWith neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open conWith neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open con With neat sketch explain close loop and open con trol system. trol system.
04
OR
What is Point to point Continuous motion control?What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control? What is Point to point Continuous motion control?
04
Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control. Explain types of adaptive control.
04
OR
Write short note on APC.Write short note on APC. Write short note on APC. Write short note on APC. Write short note on APC.
04
Q.4
List the different types of canned cycle.
03
OR
Definition and functio Definition and functio Definition and functio Definition and functio Definition and functio Definition and functio Definition and function of C. N.machine n of C. N.machinen of C. N.machinen of C. N.machine
03
Write Write Write Definition Definition Definition and definition of N.C. machineand definition of N.C. machine and definition of N.C. machine and definition of N.C. machine and definition of N.C. machine and definition of N.C. machineand definition of N.C. machineand definition of N.C. machine
04
OR
Draw the structure of Process planning. Draw the structure of Process planning.Draw the structure of Process planning. Draw the structure of Process planning. Draw the structure of Process planning. Draw the structure of Process planning. Draw the structure of Process planning.Draw the structure of Process planning. Draw the structure of Process planning.Draw the structure of Process planning. Draw the structure of Process planning.
04
Selection criteria for C. N.machine.Selection criteria for C. N.machine.Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine. Selection criteria for C. N.machine.Selection criteria for C. N.machine.Selection criteria for C. N.machine.
07
3/3
Q.5
Write down advantages of C.N.C Machine.
04
Write down disadvantages of C.N.C Machine.
04
Write the difference between N.C and C.N.C machine.
03
Write the difference between lath machine and CNC machine.
03
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