coatbridgehigh school. cut cone the given views show the front elevation and part plan of a cut...

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CoatbridgeHigh School Department Department of of Technologi Technologi cal cal Education Education Graphic Graphic Communication Communication

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Page 1: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

CoatbridgeHigh School

Department Department

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Page 2: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Cut cone

The given views show the Front Elevation and part Plan of a cut cone.

Draw the following views :-

Complete PlanEnd ElevationDevelopmentTrue Shape of cut

Department of Technological EducationDepartment of Technological Education

Page 3: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Finding position of End Elevation

Department of Technological EducationDepartment of Technological Education

Start drawing the End Elevation by projecting the height and width from the given views.

Page 4: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Drawing Generators on Plan

Department of Technological EducationDepartment of Technological Education

Use 30o and 60o lines to divide the Plan into 12 equal parts.

1

2

3

4

567

8

9

10

1211

Number each of the points on the Plan.

Page 5: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Transfer Generators from Plan to Elevation

Department of Technological EducationDepartment of Technological Education

Project each of the points from the Plan onto the Elevation base.

1 2345678

910 11 12

1

2

3

4

567

8

9

10

1211

Number each of the points on the Elevation making sure that the numbers correspond with those on the Plan.

Page 6: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Drawing generator on Elevation

Department of Technological EducationDepartment of Technological Education

Draw generators from the apex of the cone to each of the points found on the base of the cone.

1 2345678

910 11 12

Page 7: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Drawing generators onto End Elevation

Department of Technological EducationDepartment of Technological Education

1211

10

9

8

76 5

4

3

2

1

9108

117

126

15

243

Project the position of the generators onto the End Elevation by projecting the points from the Plan.

6584 3

102

111127 9

Number each of the points on the End Elevation.

Draw generators from the apex to the base.

Page 8: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Finding cut points on End Elevation

Department of Technological EducationDepartment of Technological Education

Project the points where the generators on the Elevation cross the cut onto the End Elevation.

1211

10

9

8

76 5

4

3

2

1

9108

117

126

15

243 65

84 3

102

111127 9

Mark each of the points found with a small dot.

Page 9: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Completing End Elevation

Department of Technological EducationDepartment of Technological Education

Complete the End Elevation by drawing a smooth curve through each of the point and then darkening the other outlines on the view.

9108

117

126

15

243 65

84 3

102

111127 9

Page 10: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Finding cut points on Plan

Project the points from the cut on the Elevation up to the correct generator lines on the Plan.

(Note that points 6 and 12 will not be able to be found at this time.)

Department of Technological EducationDepartment of Technological Education

9108

117

126

15

243 65

84 3

102

111127 9

Mark each of the points found with a small dot

Page 11: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Finding points 6 and 12 on Plan (alternative 1)

Project point 6 and 12 onto the outside generator on the Elevation.

Department of Technological EducationDepartment of Technological Education

Project this point up to the centre line of the Plan.

Use compasses to rotate this point onto the correct generators for points 6 and 12.

Mark each of these points with a small dot

Page 12: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Finding points 6 and 12 on Plan (alternative 2)

Project points 6 and 12 from the End Elevation onto the correct generators on the Plan.

Department of Technological EducationDepartment of Technological Education

Page 13: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Completing Plan

To complete the Plan draw a smooth curve through each of the 12 points found.

Department of Technological EducationDepartment of Technological Education

Page 14: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Development of surface (1)

Mark the position where the apex of the Development will be placed.

Department of Technological EducationDepartment of Technological Education

9 87

6

5

4

3

2

1

12

11

9

10Draw the first generator.

Draw the base line of the Development.

Step off the size to each generator point along the base.

Number each of the points found.

Draw generator lines from the apex to each of the points on the base.

Page 15: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Development of surface (2)

Mark each of the found points with a small dot.

Department of Technological EducationDepartment of Technological Education

It is necessary to find the ‘true length’ of the cut points along each generator.

To find these sizes project a line through each point on the cut of the Elevation to the outside generator.

Page 16: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

Development of surface (3)

Measure the distance from the apex to each point on the outside generator.

Department of Technological EducationDepartment of Technological Education

Transfer this size to the correct generator on the Development.

Mark each point with a small dot.

Draw a smooth curve through each point found.

Darken each of the other outlines on the Development.

Page 17: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

True Shape of cut (1)

Project each of the points on the cut of the Elevation away at right angles to the cut surface.

Department of Technological EducationDepartment of Technological Education

Draw a datum line on the True Shape – in this case the centre line has been chosen.

Number each of the lines projected up to the True Shape.

Page 18: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

True Shape of cut (2)

Measure the sizes from the cut points to the centre line on the Plan and transfer each of these sizes to the correct lines on the True Shape.

Note – These sizes can also be measured from the End Elevation.

Mark each of the points with a small dot.

Department of Technological EducationDepartment of Technological Education

Page 19: CoatbridgeHigh School. Cut cone The given views show the Front Elevation and part Plan of a cut cone. Draw the following views :- Complete Plan End Elevation

True Shape of cut (3)

To finish the True Shape draw a smooth curve through each of the points found.

Department of Technological EducationDepartment of Technological Education

The final drawing should look like this.