MACHINE DRAWING |Tutorial and practice | Diploma | BLUE PRINT | Question | Diploma

 

 

Course Title: MACHINE DRAWING

Scheme (L:T:P) : 0:2:4

Total Contact Hours: 78

Course Code:

15ME34D

Type of Course: Tutorial and practice

 

Credit :03

Core/ Elective:

Core

CIE- 25 Marks                                                                                                       SEE- 100 Marks

 

Course Objectives:                                                                                                    

 

1.            Understanding of drawing, which includes clear visualization of objects and the proficiency in reading and interpreting a wide variety of production and assembly drawings.

2.            This course envisages reinforcing and enhancing the knowledge and skill acquired in the earlier two courses

On successful completion of the course, the students will be able to:

Course Outcome

CL

Linked PO

Teaching Hrs

CO1

Interpret Conventional symbols as per IS code SP46.

R

1,2,3,10

04

CO2

Understand the Conventional methods of representing threaded fasteners

R

1,2,3,10

12

CO3

Understand                           the                           Conventional representation of Riveted joints

U/A

1,2,3,10

12

CO4

Categorize                    attributes              of                    Production Drawing and Limits, fits, tolerances

U

1,2,3,10

06

C05

Illustrate the significance & use of tolerances of size, forms & positions

U

1,2,3,10

06

C06

Visualize the assembly of a given set of details of machine components

U/A

1,2,3,8,9,10

38

 

 

Total sessions

78

Legend: R; Remember, U: Understand A: Application

 

COURSE-PO ATTAINMENT MATRIX

 

Course

Programme Outcomes

1

2

3

4

5

6

7

8

9

10

MACHINE DRAWING

03

03

03

-

-

-

-

2

2

3

Level 3- Highly Addressed, Level 2-Moderately Addressed, Level 1-Low Addressed.

Method is to relate the level of PO with the number of hours devoted to the COs which address the given PO. If >40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 3

If 25 to 40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 2 If 5 to 25% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 1

If < 5% of classroom sessions addressing a particular PO, it is considered that PO is considered not-addressed.


COURSE CONTENT AND BLUE PRINT OF MARKS FOR SEE

 

Unit No

 

Unit Name

Hour

Questions to be set for SEE

Marks weightage

weightage (%)

R

U

A

 

 

 

1

CONVENTIONAL REPRESENTATION

04

15

--

---

15

11.5

 

2

THREADED FASTENERS

12

---

--

15

15

11.5

3

RIVETED JOINTS

12

--

---

15

15

11.5

 

4

LIMITS, FITS AND TOLERANCES

06

---

15

--

15

11.5

 

5

PRODUCTION DRAWINGS

06

--

---

---

---

------

 

6

DETAILS TO ASSEMBLY

38

--

---

70(*)

70(*)

54

 

Total

78

15

15

100

130

100

Text Box: UNITI: CONVENTIONAL REPRESENTATION	04Hrs


Legend: R; Remember, U: Understand A: Application (*): Compulsory question to be answered

 

Standard convention using SP – 46 (1988)-Materials C.I., M.S, Brass, Bronze, Aluminum, wood, Glass, Concrete and Rubber-Long and short break in pipe, rod and shaft.- Various sections- Half, removed,-Standard convention of Knurling, splined shafts, and chain wheels- Springs with square and flat ends, Gears, sprocket wheel-Countersunk &counter bore

 

 

Text Box: UNTII: THREADED FASTENERS	12Hrs


 

Screw thread terminology-Conventional representation of External threads and internal threads- Draw the top and front view of hexagonal headed bolt with nut across flat and corner-Draw - square headed bolt across corner and flat-cylindrical headed bolt-Eye bolt-Locking devices-Draw the views of for standard dimensions-lock nut-castle nut-Studs-Tap bolt-Machine screws- washers-Keys-sunk key-Gib head key.(For a given standard diameter with proportions)

 

 

Text Box: UNITIII: RIVETED JOINTS	12Hrs


Rivets-types-Types of riveted joints-Draw the sectional front view and top view of-single riveted

lap joint, double riveted lap joint with chain riveting and zigzag riveting. Draw the sectional front view and top view of-single riveted butt joint with single and double cover plate - double riveted butt joint with chain riveting and zigzag riveting with double cover plate.


Text Box: UNIT IV:LIMITS, FITS AND TOLERANCES	06Hrs

Concept of limits, fits & allowances--Introduction to ISO system of tolerance,-dimensional

tolerances-Draw the working drawing plain step turned shaft of varying diameter, indicate the dimensional tolerances

Text Box: UNIT V: PRODUCTION DRAWINGS	06Hr


Surface roughness-Indication of machining-symbol showing direction of lay, roughness

grades, machining allowances, Machining symbols used in industry

(Suggested Practice:Disassembling of any Physical model having not less than five parts, sketch the minimum views required for each component, measure all the required dimensions of each component.)

Text Box: UNIT VI: DETAILS TO ASSEMBLY	38Hrs


 

Introduction to the unit assembly drawing, steps involved in preparing assembly drawing from Details-Sequence in assembly-Preparation of details and Assembly of parts with Sectional views of- Socket and Spigot joint Cotter Joint-- Knuckle joint- Protected Flanged coupling- Universal coupling-Plummer Block and Screw Jack (Front, side and top views)

 

®TEXT BOOKS

1. Machine drawing, -K.R. Gopala Krishna Subhas Publishers, Bangalore

 

REFERENCES

1.     Machine Drawing- N.D.Bhatt, Charotar Publication, Anand

2.     Machine Drawing-Sidheshwar-Tata McGraw Hill

3.     Code of practice for general engineering-IS Code SP 46(1988)- Engineering Drawing Practice for School and colleges

4.     Production Drawing-L.K.Narayanan,P.Kannaich,- New Age International Publication

Text Box: SUGGESTED LIST OF STUDENT ACTIVITYS


Note: the following activities related to unit 5 and for assessing CIE(IA)

1.       Each student should submit any one of the following type activity or any other similar activity related to the course and before take up get it approved from concerned Teacher and HOD.

2.       Each student should conduct different activity and no repeating should occur

 

1

Select at least four simple mechanical components each made up of minimum 5-6 Manufacturing operations. Get them approved by teacher. Measure and sketch them in a

drawing sheet with dimensions.

2

Select at least one simple mechanical assembly in group of 5-6 students, each made up of minimum 5-6 manufacturing operations. Get them approved by teacher. Measure and sketch them in a drawing sheet with dimensions. Example- assembly of any coupling,

carburetor, machine vice, fuel pump, tail stock etc.

3

Bring Actual assembly from workshop/industry, measure dimensions, sketch it and make

2D production drawing for the same.

 

Course Delivery:                                                                                                    

The course will be delivered through lectures and Demonstration and practices


NOTE:.

1.     Students should use two separate A3 size sketchbooks, one for class work and another for assignment.

2.     Students should solve assignment on each topic. The sessional marks will be awarded on the basis of Graded exercises and assignment

3.     Use half imperial size drawing sheet for term work

 

MODEL OF RUBRICS /CRITERIA FOR ASSESSING STUDENT ACTIVITY

RUBRICS FOR ACTIVITY( 5 Marks)

 

Dimension

Unsatisfactory

Developing

Satisfactory

Good

Exemplary

Student Score

1

2

3

4

5

 

Collection of data

Does not collect any information relating to the

topic

Collects very limited

information; some relate to

the topic

Collect much information; but very

limited relate to the topic

Collects some basic

information; most refer to

the topic

Collects a great deal of information; all refer to

the topic

Ex: 4

Fulfill team’s roles & duties

Does not perform any duties

assigned to the team role

Performs very little duties but unreliable.

 

Performs very little duties

Performs nearly all duties

Performs all duties of

assigned team roles

 

 

5

 

Shares work equally

 

Always relies on others to do the work

Rarely does the assigned work; often needs reminding

Usually does the assigned work; rarely needs reminding

 

Normally does the assigned work

Always does the assigned work without having to be reminded.

 

 

3

 

Listen to other Team mates

 

Is always talking; never allows

anyone else to speak

Usually does most of the

talking; rarely allows others to speak

Talks good; but never show interest in listening others

 

Listens, but sometimes talk too

much

 

Listens and speaks a fair amount

 

 

2

Average / Total marks=(4+5+3+2)/4=14/4=3.5=4

 

Note: This is only an example. Appropriate rubrics/criteria may be devised by the concerned faculty (Course Coordinator) for assessing the given activity.


Course Assessment and Evaluation Scheme:

 

 

What

To whom

When/Where (Frequency

in                  the

course)

Max Marks

Evidence collected

Course outcomes

 

CIE

IA

Students

Graded

Exercises-

Average

marks                   all graded

exercises                    to be computed.

20

Drawing Sheets

1.2,3,4,5,6

SEE

End Exam

Student

activities

05

Log of activity

1.2,3,4,5,6

End

course

of

the

100

Answer scripts

at BTE

1.2,3,4,5,6

 

 

 

Student Feedback on

course

Students

Middle of the

course

 

Feedback

forms

1, 2,3 Delivery of

course

End Survey

of

Course

End

course

of

the

 

Questionnaires

1,2,3,4,5,6-

Effectiveness Delivery

instructions Assessment

Methods

 

of of &

*CIE – Continuous Internal Evaluation         *SEE – Semester End Examination

Note:

1. Rubrics to be devised appropriately by the concerned faculty to assess Student activities.

 

 

Note to IA verifier: The following documents to be verified by CIE verifier at the end of semester

 

1.     Drawing sheet files ( Two /Three students)( 20 marks)

2.     Student suggested activities report for 5 marks

3.     Student feedback on course regarding Effectiveness of Delivery of instructions & Assessment Methods.

 

 

 NOTE:THIS SUBJECT SHOULD THOUGHT IN A BATCH OF 15 TO 20 STUDENTS,TEACHER

 INCHARGE PER BATCH HAS TO MONITER, EVALUATE OR ASSESS THE STUDENTS. 

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