Lab Manual
Of
3ME 4-20 Machine Drawing Practice
For
Bachelor of Technology
In
Mechanical Engineering
From
Bikaner Technical University, Bikaner
Prepared by
Dr. Tarun Kumar Aseri (Assistant Professor)
MECHANICAL ENGINEERING DEPARTMENT
Engineering College Ajmer
Dr. Tarun K. Aseri
1 (Asst. Prof.)
Contents
Scheme, Course Objectives and Outcomes ... 2
Evaluation Criteria and Points Distribution for Assignments ... 3
Assignment No. 1: 2D Drafting – 1 ... 4
Assignment No. 2: 2D Drafting - 2 ... 5
Assignment No. 3: 3D part modeling ... 6
Assignment No. 4: 3D part and sectional view ... 8
Assignment No. 5: 3D part and orthographic views ... 9
Assignment No. 6: 3D part and assembly ... 10
Assignment No. 7: 3D part, assembly and sectional view ... 11
Assignment No. 8: 3D assembly, explode view and sectional view ... 12
Lab Project ... 13
Dr. Tarun K. Aseri 2 (Asst. Prof.)
Scheme, Course Objectives and Outcomes
Scheme
Category
Course code
Course Title
Hours Marks
Credit
L T P IA ETE Total
DC 3ME4-
20
Machine Drawing Practice
- - 3 60 40 100 1.5
Course Objectives
1. To acquire the knowledge of CAD software and its features.
2. To familiarize the students with Indian Standards on drawing practices.
3. To impart knowledge of thread forms, fasteners, keys, joints and couplings.
4. To make the students understand and interpret drawings of machine components leading to preparation of assembly drawings manually and using CAD packages.
5. To acquire the knowledge of limits, tolerance and fits and indicate them on machine drawings
Course Outcomes
1. Identify the national and international standards pertaining to machine drawing.
2. Understand the importance of the linking functional and visualization aspects in the preparation of the part drawings.
3. Apply limits and tolerances to assemblies and choose appropriate fits for given assemblies.
4. Interpret the Machining and surface finish symbols on the component drawings.
5. Preparation of the part or assembly drawings as per the conventions.
Dr. Tarun K. Aseri 3 (Asst. Prof.)
Evaluation Criteria and Points Distribution
Particular Points Weightage
Assignments 610 0.7
Lab Project 110 0.3
• Points Distribution for Assignments
Criteria ↓ Assignment
A-1 A-2 A-3 A-4 A-5 A-6 A-7 A-8
2D/3D
drawing 30 30 40 20 20 25 25 25
Sectional
view - - - 20 - - 15 20
Orthographic
view - - - - 30 - - -
Dimensions - 10 - - 30 - 40 -
Assembly
view - - - 20 25 25
Explode view - - - 10
Report 15 15 20 20 20 20 25 20
Total 45 55 60 60 100 65 125 100
• Points Distribution for Mini Lab Project
Criteria Points
Complexity of design 25
Level of mechanism involved 25
Explode view, rendering, etc. 15
Oral Presentation 5x5=25
Report 20
Total 110
Dr. Tarun K. Aseri 4 (Asst. Prof.)
Assignment No. 1: 2D Drafting – 1
Objective: To prepare following drawings (1-6) in AutoCAD using draw and
modify tools
[45]
Expected Outcomes and evaluation criteria:
Outcome Points
Non dimensional six 2D drawing 30
Presentation of report 15
Dr. Tarun K. Aseri 5 (Asst. Prof.)
Assignment No. 2: 2D Drafting - 2
Objective: To prepare following drawings (7-9) in AutoCAD using draw,
modify and dimension tools.
[55]
Expected Outcomes and evaluation criteria:
Outcome Points
Dimensional three 2D drawing 10x3=30
Dimensions 10
Presentation of report 15
Dr. Tarun K. Aseri 6 (Asst. Prof.)
Assignment No. 3: 3D part modeling
Objective: To prepare three dimensional (3D) part (Drawings 10-13) using Creo CAD modeling software. All dimensions are in ‘mm’. Assume appropriately any missing dimension(s).
[60]
Drawing 10
Drawing 11
Dr. Tarun K. Aseri 7 (Asst. Prof.)
Drawing 12
Drawing 13 Expected Outcomes and evaluation criteria:
Outcome Points
3D part 10x4=40
Presentation of report 20
Dr. Tarun K. Aseri 8 (Asst. Prof.)
Assignment No. 4: 3D part and sectional view
Objective: To prepare three dimensional (3D) model and half as well as full sectional views of Drawings 14-15 using Creo CAD modeling software. All dimensions are in ‘mm’. Assume appropriately any missing dimension(s).
[60]
Drawing 14
Drawing 15 Expected Outcomes and evaluation criteria:
Outcome Points
3D part 10x2=20
2D half and full sectional views (5x2)x2=20
Presentation of report 20
Dr. Tarun K. Aseri 9 (Asst. Prof.)
Assignment No. 5: 3D part and orthographic views
Objective: To prepare three dimensional (3D) model and 2D dimensional orthographic views (in IIIrd angle projection: Top, Elevation and any one side view) of Drawings 16-17 using Creo CAD modeling software. All dimensions are in ‘mm’. Assume appropriately any missing dimension(s).
[100]
Drawing 16
Drawing 17 Expected Outcomes and evaluation criteria:
Outcome Points
3D part 10x2=20
2D orthographic views (5x3)x2=30
Dimensions of views (5x3)x2=30
Presentation of report 20
Dr. Tarun K. Aseri 10 (Asst. Prof.)
Assignment No. 6: 3D part and assembly
Objective: To prepare three dimensional (3D) part (Drawing 18) and assembly (Drawing 19) of Roller belt assembly using Creo
CAD modeling software. All dimensions are in ‘mm’. Assume appropriately any missing dimension(s).
[65]
Drawing 18 Drawing 19
Expected Outcomes and evaluation criteria:
Outcome Points
3D model of different parts 25
3D model of assembly 20
Presentation of report 20
Dr. Tarun K. Aseri 11 (Asst. Prof.)
Assignment No. 7: 3D part, assembly and sectional view
Objective: To prepare three dimensional (3D) part (Drawing 20) and assembly (Drawing 21) of plummer block (pedestal bearing)
using Creo CAD modeling software. All dimensions are in ‘mm’. Assume appropriately any missing dimension(s).
[125]
Drawing 20 Drawing 21
Expected Outcomes and evaluation criteria:
Outcome Points Outcome Points
3D model of different parts 25 Half sectional view as shown in Drawing 21 15
3D model of assembly of complete plummer block 25 2D Dimensional drawing of assembly as shown in Drawing 20
40
Presentation of Report 25
Dr. Tarun K. Aseri 12 (Asst. Prof.)
Assignment No. 8: 3D assembly, explode view and sectional view
Objective: To prepare three dimensional (3D) part as well as assembly of swivel bearing using Creo CAD modeling software. All
dimensions are in ‘mm’. Assume appropriately any missing dimension(s).
[100]
Expected Outcomes and evaluation criteria:
Outcome Points Outcome Points
3D model of different parts 25 Explode view 10
3D model of assembly 25
Full sectional view of assembly 20
Presentation of report 20
Dr. Tarun K. Aseri 13 (Asst. Prof.)
Lab Project
Objective: To prepare any one movable assembly using mechanism feature of Creo 1. Cylinder piston (at least 2 pistons)
2. Belt and pully
3. Gear mechanism (at least 5 gears) 4. Quick return mechanism
5. CAM and follower (at least 4 cams) 6. Suspension system in automobile
Expected Outcomes and evaluation criteria:
Criteria Points
Complexity of design 25
Level of mechanism involved 25
Explode view, rendering, etc. 15
Oral Presentation 5x5=25
Report 20
Total 110
Dr. Tarun K. Aseri
14 (Asst. Prof.)
