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

	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
Course	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 (%)
Unit No	Unit Name	Hour	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

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

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)

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.

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

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.)

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

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

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.

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.

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
Dimension	1	2	3	4	5	Student Score
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 &