Technical Drawing Y2

Unit of Competency: Construct Auxiliary Views and Develop

Surface Patterns

Module No.: 1

Module Title: Construct Auxiliary Views and

Developing Surface Patterns

Republic of the Philippines

Department of the Education

PUBLIC TECHNICAL-VOCATIONAL HIGH SCHOOLS

ACKNOWLEDGMENT

Copyright Department of Education 2008

First Published JUNE 2008

This draft was prepared during the Competency-Based Learning

Materials Development Workshop conducted at the Marikina Hotel,

Marikina City on February 18-22, 2008 and at the Development

Academy of the Philippines (DAP) on May 5-10, 2008.

This learning instrument was developed by the following

personnel:

Technology Teachers:

Mario S. Gregorio, Ed.D.

Tagum National Trade School

Tagum City, Davao del Norte, Region XI

Roy S. Luneta

Bauan Technical High School

Bauan, Batangas

Ariel F. Maglalang

Assemblywoman Felicita G. Bernardino

Memorial Trade School, Lias, Marilao, Bulacan, Region III

Juanito Bugaoisan

Don Alejandro Roces, Sr. Science and Technology

San Fernando, La Union

Arlene V. Tobias

Mabalacat Technical High School

Mabalacat, Pampanga

Facilitator:

Aida T. Galura

Angeles City National Trade School

Sunset Valley, Angeles City

Encoders:

Mel Contapay

Office of Legal Affairs

Department of Education

Meralco Ave., Pasig City

Maria Riza Zamora

DepED Budget Division

Meralco Ave., Pasig City

The Refinement And Enrichment Of The Competency-Based

Curriculum and Competency-Based Learning Materials was done in

Marikina Hotel, Marikina City on April 13-18, 2009 through the

concerted effort of the following writers:

Technology Teachers:

Mario S. Gregorio Ed. D.

Tagum National Trade School

Tagum City, Davao del Norte, Region 11

Condrado C. Casulla

Pangasinan School of Arts and Trades

Lingayen, Pangasinan, Region 01

Nelson M. Arisga

Malvar National High School

Malvar, Batangas, Region 4A

Alexander M. Latoga

Manuel S. Enverga Memorial College of Arts and Trades

Mauban, Quezon, Region 4A

Mirasol F. Dasig

San Pedro Relocation Center National High School

San Pedro, Laguna

Region 4A

Contextual Writer:

Marvin R. Viernes

Muntinlupa Business High School

Muntinlupa City, NCR

Encoder:

Lawrence D. Cruz

DepEd EID-TS

DepEd Complex Meralco Ave.

Quezon City

Jeffree O. Ponce

DepEd EID-TS

DepEd Complex Meralco Ave.

Quezon City

Facilitator:

Orlando E. Manuel PhD

Principal

Cabarroguis National School of Arts and Trades

Cabarroguis, Quirino

Region 02

This work was funded by the Department of Education.

REFERENCES AND FURTHER READING

Giesecke, Mitchell, and Spencer. Technical Drawing; The Macmillan Company: 1949.

French and Vierck. Engineering Drawing; MacGraw, Hill Book Company,10th

editon: 1960

German M. Manaois. Drafting 1 and 2; Phoenix Publishing:1983

Norman Stirling. Introduction to Technical Drawing; Delmar Publishing: 1977

TABLE OF CONTENTS

Page

How to Use this Module ……….. I

Introduction ……….. ii

Technical Terms ………. iii

Learning Outcome 1 Construct Primary Auxiliary Views……… 1

Learning Experiences/Activities ………. 2

Information Sheet 1.1 ……… 3

Self – Check 1.1 ……….. 8

Operation Sheet 1.1 ……….. 11

Self – Check 1.2 ……….. 13

Learning Outcome 2 – Developing Patterns for Product Packages……… 14

Learning Experiences/Activities ……….. 15 Information Sheet 2.1 ……… 16 Operation Sheet 2.1 ……….. 20 Self Check 2.1 ……… 25 Self Check 2.2 ……… 27 Assessment Resources ……….. 28 Answer Key ………. 30-33

HOW TO USE THIS MODULE

Activities are properly arranged in this module to help you work in

your own pace. This module also covers the knowledge, skills, and attitude desirable attitude you need in technical drawing.

A Pre-assessment precedes the learning activities in each module to determine you learning level and needs.

The Learning Activity Page gives the sequence of the learning task. This page serves as the road map in achieving the desired objectives.

When you are able to accomplish all the tasks required, a

post-assessment is given to check if the learner is already competent with the

specified learning outcome/s and ready for the next task.

Definitions of terms are provided in this module for upon easier understanding.

Program/ Course

:

TECHNICAL DRAWING 1

Unit of Competency

:

CONSTRUCT AUXILIARY VIEWS AND

DEVELOP PATTERNS

Module Title

:

Developing Auxiliary Views and

Developing Patterns

INTRODUCTION

This module is designed for you to familiarize you with auxiliary drawings and to be able to draw mechanically using compass, triangle, dividers, pencils and erasers. It is important to have a basic knowledge of orthographic construction because this can be integrated or applied in any area of specialization that you wish to have.

This is also designed to teach students with skills in developing product packages.

SUMMARY OF LEARNING OUTCOMES

Upon the completion of this module, you will be able to:

LO1 Construct primary auxiliary views LO2 Develop patterns for product packages

TECHNICAL TERMS

Miter line- is a 45 degree line which is used in projection. It serves as guide

in keeping up drawing lines straight.

Parallel- is a line that does not intersect in the plane, but goes to the limit

of infinity.

Inclined- makes an angle with another line or plane. Project- means to extend from.

Cylinder- is a geometric figure with a uniform circular cross section

through its entire length.

Pattern or stretch out- is produced by utilizing a form of drafting called

pattern development.

Hem- is used to strengthen the lips of sheet metal objects. It is made in

standard sizes, 4.0mm, 6.0mm, 10.0mm, etc.

Wired Edge- gives extra strength and rigidity to sheet metal edges.

Seam- is used to strengthen sheet metal sections. It is usually joined by

Program/ Course

:

TECHNICAL DRAWING 1

Unit of Competency

:

CONSTRUCT AUXILIARY VIEWS AND

DEVELOP PATTERNS

Module Title

:

Developing Auxiliary Views and

Developing Patterns

Learning Outcomes 1. Construct primary auxiliary views

Assessment Criteria

1. The principles of auxiliary drawing are discussed. 2. Two types of auxiliary drawings are identified.

3. Procedures in constructing the auxiliary drawing are correctly discussed.

4. Auxiliary drawings are demonstrated according to specifications.

References:

Giesecke, Mitchell, and Spencer. Technical Drawing; The Macmillan Company: 1949.

French and Vierck. Engineering Drawing; MacGraw, Hill Book Company,10th

editon: 1960

German M. Manaois. Drafting 1 and 2; Phoenix Publishing:1983

Norman Stirling. Introduction to Technical Drawing; Delmar Publishing: 1977

2

LEARNING EXPERIENCES/ACTIVITIES

Learning Outcome # 1: Construct Primary Auxiliary Views

Learning Activities Special Instruction

1. Read information sheet no. 1 on Constructing Auxiliary Views.

2. Answer self check no. 1.1. 3. Compare your answers to the

answer key.

4. If you were not able to get some of the items, review and read again information sheet no. 1.

5. Read operation sheet no. 1.1 carefully, then perform the activity on self check no. 1.2. 6. Review the steps in the same

activity sheet, if the steps were not properly taken.

 Try to answer self check no. 1.1 as best as you can.

 Try to perform the said activity

3

INFORMATION SHEET # 1.1

LO1. Construct auxiliary views

Auxiliary views

Some objects have inclined or oblique surfaces which cannot be represented in their true or exact shapes in any of the three regular orthographic views. In such case, it is necessary to make an extra or “helping” view which will be perpendicularly projected from the inclined surface. This extra view is called an Auxiliary view and can be classified as an orthographic view.

In drawing auxiliary view, drawing is always projected from the regular view on which the inclined surface appears as a line. Also the construction lines projecting from the inclined surface are always on the right angles to the cut.

In figure 1, the same objects are similarly drawn, the only difference that in both figures, there are extra views perpendicularly projected from the front view where the inclined edges appear.

Fig. 1

4

An auxiliary view added to the orthographic drawing

Types of auxiliary views

There are six recognized types of auxiliary view: right auxiliary view, left auxiliary view, front auxiliary view, rear auxiliary view, right auxiliary elevation, and left auxiliary elevation.

Fig. 2

Left and right auxiliary views are projected perpendicularly from the front view.

5

Left and right auxiliary elevations are projected from the top view.

6

Fig. 4

7

SELF CHECK # 1.1

LO1. Construct auxiliary views

I. DIRECTION: Read each item carefully. then write the letter of the correct answer on the space provided.

---1. A type of drawing used to represent the exact size and shape of an object having inclined surfaces.

a. auxiliary drawing c. sectional drawing b. orthographic drawing d. perspective drawing ---2. It is a part of a drawing that needs extra view.

a. Inclined surface b. Horizontal face c. Vertical surface d. Circular features

---3-5. From the given set of orthographic drawings on the

succeeding pages, what type of auxiliary drawing is produced based on the position of the inclined surface?

8

_____ 4.

a. front auxiliary view c. left auxiliary view b. right auxiliary view d. left auxiliary elevation

9

a. left auxiliary elevation c. right auxiliary view b. left auxiliary view d. front auxiliary view

II Enumeration:

Give the six types of auxiliary views 1. 2 3 4. 5. 6

10

OPERATION SHEET # 1.1

LO1. Construct auxiliary views

1. Study the given orthographic problems then identify the type of auxiliary drawing used for the given problem.

2. Project the inclined surface and corners with 90 degree line. Be sure to use your instruments properly.

11

3. Darken construction lines to show the auxiliary view.

12

SELF CHECK 1.2

LO1. Construct auxiliary views

28 52 25 28 PARTIAL VIEW FRONT VIEW FRONT VIEW 28 45 deg. 20 10 30 10 14

Direction: Given the orthographic views, construct the auxiliary

13

Program/ Course

:

TECHNICAL DRAWING II

Unit of Competency

:

DEVELOP PATTERNS FOR PRODUCT

PACKAGES

Module Title

:

Developing Patterns for Product

Packages

Learning Outcome 2. Develop patterns for product packages.

Assessment Criteria

1. The principles of pattern development are correctly explained. 2. The three methods in making patterns are identified and discussed. 3. Procedure in developing patterns are demonstrated according to

standard specifications.

References:

Giesecke, Mitchell, and Spencer. Technical Drawing; The Macmillan Company: 1949.

French and Vierck. Engineering Drawing; MacGraw, Hill Book Company,10th

editon: 1960

German M. Manaois. Drafting 1 and 2; Phoenix Publishing:1983

Norman Stirling. Introduction to Technical Drawing; Delmar Publishing: 1977

14

LEARNING EXPERIENCES/ ACTIVITIES

Learning Outcome # 2: Develop Patterns for Product Packages Learning Activities Special Instruction

1. Read information sheet no. 2 on Developing Patterns for Product Packages.

2. Answer self check no. 2.1. 3. Compare your answers with

the answer key.

4. If you were not able to get some of the items, review and read again information sheet no. 2. 5. Proceed to activity sheet no.

2.1.

6. Review the steps from the given activity sheet.

 Try to answer self check no. 2.1 the best you can.

 Try to perform the said activity.

15

INFORMATION SHEET # 2.1

LO2. Develop patterns for product packages

Pattern is a full size drawing of the various surfaces of an object stretched out on a flat surface.

Pattern development is important to many occupations and hobbies that require folding or rolling of sheet materials. It plays an important part in the fabrication of sheet metal ducts and pipes

needed in the installation and heating of air conditioning units. Stoves and refrigerators are fabricated from many sheet metal parts.

Sample developed objects

Cube

16

Pyramid Cylinders Cones

17

Hems, Edges, Seams

Hem-is used to strengthen the lips of sheet metal objects. It is made in

18

Wired Edge- gives extra strength and rigidity to sheet metal edges.

Seams-are used to strengthen sheet metal sections. They are usually joined

19

OPERATION SHEET # 2.1

LO2. Develop patterns for product packages

1. Draw the front and top views of required cylinder. Divide top view into twelve (12) equal parts and number each division.

STEP 1 STEP 2 STEP 3 STEP 4

20

FRONT VIEW

2. The height of the pattern or stretchout is the same as the height of the front view. Project construction lines from the top to bottom of the front view.

21

4. Set your compass or divider from 1 to 2 (the points where the division lines intersect the circle) on the top view. Transfer this distance to the extended lines of the pattern to locate reference lines 1,2,3,-12,1.

22

.

6. Allow 6.0 m for seams and go over all outlines with visible object lines. The lines that represent the curve or circular lines are drawn in color or they are left as construction lines.

23

3 4 5

1 2 6 7 8 9 10 11 12 1 13

24

SELF CHECK # 2.1

LO2. Develop patterns for product packages

I. DIRECTIONS: Read each item carefully. Write the letter of the correct answer on the space provided.

---1.It is a full-sized drawing of the various surfaces of an object stretched out on a flat surface.

a. hem b. pattern c. cylinder d. fabrication ---2. It is used to strengthen the lips of sheet metal objects. It is made in standard sizes, 4.0mm, 6.0mm, 10.0mm, etc.

a. hem b. wedge c. seam d. edge

---3. Which appliance below is not a sample of developed products? a. washing machine b. stoves c. refrigerators d. flat iron ---4-5 Give the correct pattern development for figure A and figure B.

A

25

A. Give the three kinds of seam. 1.

2 3

B. Name the two kinds of hem. 1. 2. D C B A

26

SELF CHECK # 2.2

LO2. Develop Patterns for Product Packages

DIRECTION: Given a model, develop a pattern.

16 cm. dia.

8 cm dia.

27

ASSESSMENT RESOURCES

Performance Assessment

Scoring Rubrics

Criteria Score

(Tick the corresponding pts.)

Accuracy 50 45 40 Speed 10 6 8 Neatness 25 20 15 Lettering/Labeling 15 12 10 8 Total Performance Criteria:  Accuracy

50 pts - The output is accurately done.

45 pts - Two to five errors are observed on the output. 40 pts. - Six to ten errors are observed on the output.  Speed

10 pts - The output is done 5 minutes before the time. 8 pts - The output is done on time.

28

25 pts. - has no error

20 pts - has two to three erasures 15 pts - has four or more erasures

Lettering/Labeling

15 pts. - All pieces of information are completely indicated and legibly printed.

12 pts. - All pieces of information are legibly printed but some are missing.

10 pts. - All pieces of information are legibly printed but some are missing and misspelled.

8 pts. - Pieces of information are not legibly printed and words are misspelled.

29

ANSWER KEY 1.1

 right auxiliary view  left auxiliary view  front auxiliary view  rear auxiliary view  right auxiliary elevation  left auxiliary elevation

30

ANSWER KEY 1.2

( Teacher’s Check)

31

ANSWER KEY 2.1

32

ANSWER KEY 2.2

( Teacher’s Check)

Unit of Competency: Construct Auxiliary Views and Develop

Surface Patterns

Module No.: 1

Module Title: Construct Auxiliary Views and

Developing Surface Patterns

Republic of the Philippines

Department of the Education

PUBLIC TECHNICAL-VOCATIONAL HIGH SCHOOLS

ACKNOWLEDGMENT

Copyright Department of Education 2008

First Published JUNE 2008

This draft was prepared during the Competency-Based Learning

Materials Development Workshop conducted at the Marikina Hotel,

Marikina City on February 18-22, 2008 and at the Development

Academy of the Philippines (DAP) on May 5-10, 2008.

This learning instrument was developed by the following

personnel:

Technology Teachers:

Mario S. Gregorio, Ed.D.

Tagum National Trade School

Tagum City, Davao del Norte, Region XI

Roy S. Luneta

Bauan Technical High School

Bauan, Batangas

Ariel F. Maglalang

Assemblywoman Felicita G. Bernardino

Memorial Trade School, Lias, Marilao, Bulacan, Region III

Juanito Bugaoisan

Don Alejandro Roces, Sr. Science and Technology

San Fernando, La Union

Arlene V. Tobias

Mabalacat Technical High School

Mabalacat, Pampanga

Facilitator:

Aida T. Galura

Angeles City National Trade School

Sunset Valley, Angeles City

Encoders:

Mel Contapay

Office of Legal Affairs

Department of Education

Meralco Ave., Pasig City

Maria Riza Zamora

DepED Budget Division

Meralco Ave., Pasig City

The Refinement And Enrichment Of The Competency-Based

Curriculum and Competency-Based Learning Materials was done in

Marikina Hotel, Marikina City on April 13-18, 2009 through the

concerted effort of the following writers:

Technology Teachers:

Mario S. Gregorio Ed. D.

Tagum National Trade School

Tagum City, Davao del Norte, Region 11

Condrado C. Casulla

Pangasinan School of Arts and Trades

Lingayen, Pangasinan, Region 01

Nelson M. Arisga

Malvar National High School

Malvar, Batangas, Region 4A

Alexander M. Latoga

Manuel S. Enverga Memorial College of Arts and Trades

Mauban, Quezon, Region 4A

Mirasol F. Dasig

San Pedro Relocation Center National High School

San Pedro, Laguna

Region 4A

Contextual Writer:

Marvin R. Viernes

Muntinlupa Business High School

Muntinlupa City, NCR

Encoder:

Lawrence D. Cruz

DepEd EID-TS

DepEd Complex Meralco Ave.

Quezon City

Jeffree O. Ponce

DepEd EID-TS

DepEd Complex Meralco Ave.

Quezon City

Facilitator:

Orlando E. Manuel PhD

Principal

Cabarroguis National School of Arts and Trades

Cabarroguis, Quirino

Region 02

This work was funded by the Department of Education.

REFERENCES AND FURTHER READING

Giesecke, Mitchell, and Spencer. Technical Drawing; The Macmillan Company: 1949.

French and Vierck. Engineering Drawing; MacGraw, Hill Book Company,10th

editon: 1960

German M. Manaois. Drafting 1 and 2; Phoenix Publishing:1983

Norman Stirling. Introduction to Technical Drawing; Delmar Publishing: 1977

TABLE OF CONTENTS

Page

How to Use this Module ……….. I

Introduction ……….. ii

Technical Terms ………. iii

Learning Outcome 1 Construct Primary Auxiliary Views……… 1 Learning Experiences/Activities ………. 2

Information Sheet 1.1 ……… 3

Self – Check 1.1 ……….. 8

Operation Sheet 1.1 ……….. 11

Self – Check 1.2 ……….. 13

Learning Outcome 2 – Developing Patterns for Product Packages……… 14 Learning Experiences/Activities ……….. 15 Information Sheet 2.1 ……… 16 Operation Sheet 2.1 ……….. 20 Self Check 2.1 ……… 25 Self Check 2.2 ……… 27 Assessment Resources ……….. 28 Answer Key ………. 30-33

HOW TO USE THIS MODULE

Activities are properly arranged in this module to help you work in

your own pace. This module also covers the knowledge, skills, and attitude desirable attitude you need in technical drawing.

A Pre-assessment precedes the learning activities in each module to determine you learning level and needs.

The Learning Activity Page gives the sequence of the learning task. This page serves as the road map in achieving the desired objectives.

When you are able to accomplish all the tasks required, a

post-assessment is given to check if the learner is already competent with the

specified learning outcome/s and ready for the next task.

Definitions of terms are provided in this module for upon easier understanding.

Program/ Course

:

TECHNICAL DRAWING 1

Unit of Competency

:

CONSTRUCT AUXILIARY VIEWS AND

DEVELOP PATTERNS

Module Title

:

Developing Auxiliary Views and

Developing Patterns

INTRODUCTION

This module is designed for you to familiarize you with auxiliary drawings and to be able to draw mechanically using compass, triangle, dividers, pencils and erasers. It is important to have a basic knowledge of orthographic construction because this can be integrated or applied in any area of specialization that you wish to have.

This is also designed to teach students with skills in developing product packages.

SUMMARY OF LEARNING OUTCOMES

Upon the completion of this module, you will be able to:

LO1 Construct primary auxiliary views LO2 Develop patterns for product packages

TECHNICAL TERMS

Miter line- is a 45 degree line which is used in projection. It serves as guide

in keeping up drawing lines straight.

Parallel- is a line that does not intersect in the plane, but goes to the limit

of infinity.

Inclined- makes an angle with another line or plane. Project- means to extend from.

Cylinder- is a geometric figure with a uniform circular cross section

through its entire length.

Pattern or stretch out- is produced by utilizing a form of drafting called

pattern development.

Hem- is used to strengthen the lips of sheet metal objects. It is made in

standard sizes, 4.0mm, 6.0mm, 10.0mm, etc.

Wired Edge- gives extra strength and rigidity to sheet metal edges.

Seam- is used to strengthen sheet metal sections. It is usually joined by

Program/ Course

:

TECHNICAL DRAWING 1

Unit of Competency

:

CONSTRUCT AUXILIARY VIEWS AND

DEVELOP PATTERNS

Module Title

:

Developing Auxiliary Views and

Developing Patterns

Learning Outcomes 1. Construct primary auxiliary views

Assessment Criteria

1. The principles of auxiliary drawing are discussed. 2. Two types of auxiliary drawings are identified.

3. Procedures in constructing the auxiliary drawing are correctly discussed.

4. Auxiliary drawings are demonstrated according to specifications.

References:

Giesecke, Mitchell, and Spencer. Technical Drawing; The Macmillan Company: 1949.

French and Vierck. Engineering Drawing; MacGraw, Hill Book Company,10th

editon: 1960

German M. Manaois. Drafting 1 and 2; Phoenix Publishing:1983

Norman Stirling. Introduction to Technical Drawing; Delmar Publishing: 1977

2

LEARNING EXPERIENCES/ACTIVITIES

Learning Outcome # 1: Construct Primary Auxiliary Views

Learning Activities Special Instruction

1. Read information sheet no. 1 on Constructing Auxiliary Views.

2. Answer self check no. 1.1. 3. Compare your answers to the

answer key.

4. If you were not able to get some of the items, review and read again information sheet no. 1.

5. Read operation sheet no. 1.1 carefully, then perform the activity on self check no. 1.2. 6. Review the steps in the same

activity sheet, if the steps were not properly taken.

 Try to answer self check no. 1.1 as best as you can.

 Try to perform the said activity

3

INFORMATION SHEET # 1.1

LO1. Construct auxiliary views

Auxiliary views

Some objects have inclined or oblique surfaces which cannot be represented in their true or exact shapes in any of the three regular orthographic views. In such case, it is necessary to make an extra or “helping” view which will be perpendicularly projected from the inclined surface. This extra view is called an Auxiliary view and can be classified as an orthographic view.

In drawing auxiliary view, drawing is always projected from the regular view on which the inclined surface appears as a line. Also the construction lines projecting from the inclined surface are always on the right angles to the cut.

In figure 1, the same objects are similarly drawn, the only difference that in both figures, there are extra views perpendicularly projected from the front view where the inclined edges appear.

Fig. 1

4

An auxiliary view added to the orthographic drawing

Types of auxiliary views

There are six recognized types of auxiliary view: right auxiliary view, left auxiliary view, front auxiliary view, rear auxiliary view, right auxiliary elevation, and left auxiliary elevation.

Fig. 2

Left and right auxiliary views are projected perpendicularly from the front view.

5

Left and right auxiliary elevations are projected from the top view.

6

Fig. 4

7

SELF CHECK # 1.1

LO1. Construct auxiliary views

I. DIRECTION: Read each item carefully. then write the letter of the correct answer on the space provided.

---1. A type of drawing used to represent the exact size and shape of an object having inclined surfaces.

a. auxiliary drawing c. sectional drawing b. orthographic drawing d. perspective drawing ---2. It is a part of a drawing that needs extra view.

a. Inclined surface b. Horizontal face c. Vertical surface d. Circular features

---3-5. From the given set of orthographic drawings on the

succeeding pages, what type of auxiliary drawing is produced based on the position of the inclined surface?

8

_____ 4.

a. front auxiliary view c. left auxiliary view b. right auxiliary view d. left auxiliary elevation

9

a. left auxiliary elevation c. right auxiliary view b. left auxiliary view d. front auxiliary view

II Enumeration:

Give the six types of auxiliary views 1. 2 3 4. 5. 6

10

OPERATION SHEET # 1.1

LO1. Construct auxiliary views

1. Study the given orthographic problems then identify the type of auxiliary drawing used for the given problem.

2. Project the inclined surface and corners with 90 degree line. Be sure to use your instruments properly.

11

3. Darken construction lines to show the auxiliary view.

12

SELF CHECK 1.2

LO1. Construct auxiliary views

28 52 25 28 PARTIAL VIEW FRONT VIEW FRONT VIEW 28 45 deg. 20 10 30 10 14

Direction: Given the orthographic views, construct the auxiliary

13

Program/ Course

:

TECHNICAL DRAWING II

Unit of Competency

:

DEVELOP PATTERNS FOR PRODUCT

PACKAGES

Module Title

:

Developing Patterns for Product

Packages

Learning Outcome 2. Develop patterns for product packages.

Assessment Criteria

1. The principles of pattern development are correctly explained. 2. The three methods in making patterns are identified and discussed. 3. Procedure in developing patterns are demonstrated according to

standard specifications.

References:

Giesecke, Mitchell, and Spencer. Technical Drawing; The Macmillan Company: 1949.

French and Vierck. Engineering Drawing; MacGraw, Hill Book Company,10th

editon: 1960

German M. Manaois. Drafting 1 and 2; Phoenix Publishing:1983

Norman Stirling. Introduction to Technical Drawing; Delmar Publishing: 1977

14

LEARNING EXPERIENCES/ ACTIVITIES

Learning Outcome # 2: Develop Patterns for Product Packages Learning Activities Special Instruction

1. Read information sheet no. 2 on Developing Patterns for Product Packages.

2. Answer self check no. 2.1. 3. Compare your answers with

the answer key.

4. If you were not able to get some of the items, review and read again information sheet no. 2. 5. Proceed to activity sheet no.

2.1.

6. Review the steps from the given activity sheet.

 Try to answer self check no. 2.1 the best you can.

 Try to perform the said activity.

15

INFORMATION SHEET # 2.1

LO2. Develop patterns for product packages

Pattern is a full size drawing of the various surfaces of an object stretched out on a flat surface.

Pattern development is important to many occupations and hobbies that require folding or rolling of sheet materials. It plays an important part in the fabrication of sheet metal ducts and pipes

needed in the installation and heating of air conditioning units. Stoves and refrigerators are fabricated from many sheet metal parts.

Sample developed objects

Cube

16

Pyramid Cylinders Cones

17

Hems, Edges, Seams

Hem-is used to strengthen the lips of sheet metal objects. It is made in

18

Wired Edge- gives extra strength and rigidity to sheet metal edges.

Seams-are used to strengthen sheet metal sections. They are usually joined

19

OPERATION SHEET # 2.1

LO2. Develop patterns for product packages

1. Draw the front and top views of required cylinder. Divide top view into twelve (12) equal parts and number each division.

STEP 1 STEP 2 STEP 3 STEP 4

20

FRONT VIEW

2. The height of the pattern or stretchout is the same as the height of the front view. Project construction lines from the top to bottom of the front view.

21

4. Set your compass or divider from 1 to 2 (the points where the division lines intersect the circle) on the top view. Transfer this distance to the extended lines of the pattern to locate reference lines 1,2,3,-12,1.

22

.

6. Allow 6.0 m for seams and go over all outlines with visible object lines. The lines that represent the curve or circular lines are drawn in color or they are left as construction lines.

23

3 4 5

1 2 6 7 8 9 10 11 12 1 13

24

SELF CHECK # 2.1

LO2. Develop patterns for product packages

I. DIRECTIONS: Read each item carefully. Write the letter of the correct answer on the space provided.

---1.It is a full-sized drawing of the various surfaces of an object stretched out on a flat surface.

a. hem b. pattern c. cylinder d. fabrication ---2. It is used to strengthen the lips of sheet metal objects. It is made in standard sizes, 4.0mm, 6.0mm, 10.0mm, etc.

a. hem b. wedge c. seam d. edge

---3. Which appliance below is not a sample of developed products? a. washing machine b. stoves c. refrigerators d. flat iron ---4-5 Give the correct pattern development for figure A and figure B.

A

25

A. Give the three kinds of seam. 1.

2 3

B. Name the two kinds of hem. 1. 2. D C B A

26

SELF CHECK # 2.2

LO2. Develop Patterns for Product Packages

DIRECTION: Given a model, develop a pattern.

16 cm. dia.

8 cm dia.

27

ASSESSMENT RESOURCES

Performance Assessment

Scoring Rubrics

Criteria Score

(Tick the corresponding pts.)

Accuracy 50 45 40 Speed 10 6 8 Neatness 25 20 15 Lettering/Labeling 15 12 10 8 Total Performance Criteria:  Accuracy

50 pts - The output is accurately done.

45 pts - Two to five errors are observed on the output. 40 pts. - Six to ten errors are observed on the output.  Speed

10 pts - The output is done 5 minutes before the time. 8 pts - The output is done on time.

28

25 pts. - has no error

20 pts - has two to three erasures 15 pts - has four or more erasures

Lettering/Labeling

15 pts. - All pieces of information are completely indicated and legibly printed.

12 pts. - All pieces of information are legibly printed but some are missing.

10 pts. - All pieces of information are legibly printed but some are missing and misspelled.

8 pts. - Pieces of information are not legibly printed and words are misspelled.

29

ANSWER KEY 1.1

 right auxiliary view  left auxiliary view  front auxiliary view  rear auxiliary view  right auxiliary elevation  left auxiliary elevation

30

ANSWER KEY 1.2

( Teacher’s Check)

31

ANSWER KEY 2.1

32

ANSWER KEY 2.2

( Teacher’s Check)