CNC-Lab Mechanical Manual
CNC-Lab Mechanical Manual
CNC-Lab Mechanical Manual
CNC Lab
(B .E. 6th Semester)
Vision:
To develop human resources for sustainable industrial and societal growth
through excellence in technical education and research.
Mission:
1. To impart quality technical education at UG, PG and PhD levels through good
academic support facilities.
Vision:
To emerge as a centre of excellence in mechanical engineering and maintain it
through continuous effective teaching-learning process and need-based research.
Mission:
M2: To nurture the students to adapt to the changing needs in academic and industrial
aspirations.
ROLL NUMBER :
YEAR :
PERFORMANCE RECORD
EXP. REMARKS /
TITLE OF EXPERIMENT
NO. GRADE
OFFICE USE
Checked By :
Part Program: It is a program written block by block with alpha-numeric codes. Codes or
words are written in a format of sequence.
N : Sequence number
G-Codes: Preparatory Codes.
F : Feed rate per minute or per revolution in either inches or mm as specified by G code
S : Spindle speed in rpm
T : Tool selection (used for machine with automatic tool changers)
R : Radius of arc; used in circular interpolation
Objective: To write and simulate CNC Part program for three axes Milling machine.
Example 1: Write a CNC part programme to cut the part as shown in Fig.1 from an
aluminium slab of 19 mm thickness and size 90 mm x 90 mm.
Fig.1
Example 2: Write a CNC part programme to cut the part as shown in Fig.2 using milling
cycle subprogram from an aluminium slab of 19 mm thickness and size 90 mm x 90 mm.
Fig.2
Example 3: Write a CNC part programme to cut a full circle(R 15 mm) as shown in Fig.3
from an aluminium slab of 19 mm thickness and size 90 mm x 90 mm.
Fig. 3
Example 3: Write a CNC part programme to drill 5 holes (R 3 mm) as shown in Fig.4 at an
aluminium slab of 19 mm thickness and size 90 mm x 90 mm.
Fig. 4
Exercise: Write a CNC part programme to cut the part as shown in Fig.5 from an
__________________ slab of ___ mm thickness and size ___ mm x ___ mm.
Fig.5:
Name of Student:
Roll No.:
Date of Experiment:
Date of Submission:
Title: Setting up of workpiece zero position and machining in Modular Vertical 3 Axis CNC
Milling machine.
Objective: To learn to setup a CNC Milling machine and executing a part programme.
Procedure: To setup the workpiece zero point refer to Fig.1 and the following steps should
be followed
Fig.1
Exercise: Write a CNC part programme to cut the part as shown in Fig.2 from an wPVC slab
of ___ mm thickness and size 40 mm x 100 mm and execute it in Modular Vertical 3 Axis
CNC Milling machine.
Program code:
Roll No.:
Date of Experiment:
Date of Submission:
Title: Machining in Semi production Vertical 3 Axis CNC machine (MTab XLMill)
Objective: To learn to setup a Semi production CNC Milling machine and executing a part
programme.
Procedure:
Exercise: Write a CNC part programme to cut the part as shown in Fig.1 from an wPVC slab
of ___ mm thickness and size ____ mm x ____ mm and execute it in Semi production
Vertical 3 Axis CNC machine.
Program code:
Name of Student:
Roll No.:
Date of Experiment:
Date of Submission:
Title: Setting up of workpiece zero position and machining in Modular CNC Turning
machine.
Objective: To learn to setup a CNC Turning machine and executing a part programme.
Procedure: To setup the workpiece zero point refer to Fig.1 and the following steps should
be followed
Fig.1
Fig.2
N01 G21;
N02 G7;
N03 G0 X20;
N04 G0 Z1;
N05 G0 X12;
N06 G1 Z-12 F50
N07 G0 X13 Z-10;
N08 G0 Z1;
N09 G0 X11.5;
N10 G1 Z-12 F50;
N11 G0 X12 Z-10;
N12 G0 Z1;
N13 G1 Z-12 F50;
N14 G0 X12 Z-10;
N15 G0 Z1;
N16 G0 X10;
N17 G1 Z0 F50;
N18 G1 X11 Z-6 F50;
N19 G1 X14;
N20 G0 X20 Z2;
N21 M02;
Study the program and put comment against each code block.
Exercise: Write a CNC part programme to turn the part as shown in Fig.1 from an acrylic
workpiece of ___ mm diameter and ____ mm length and execute it in Modular CNC Turning
machine.
Fig.1:
Name of Student:
Roll No.:
Date of Experiment:
Date of Submission: