15.MODULE CADD UNIT 15

COMPUTER AIDED DEVELOPMENT DRAWING

UNIT 15: PIPE / CONE THROUGH A PLATE

INTRODUCTION :

This subject will emphasize more on the developments of simple layouts, paralleline ,
radialine and triangulation methods in conjunction with the making of template of any
sheet metal projects.

LEARNING OUTCOMES :

Students should be able to :
1) Explain the meaning of Pipe / Cone Through A Plate and it use.
2) Select the terminology that suits the related pattern.
3) Construct the triangulation and others method of developments with the helps of
drawing equipments.

15.1- STARTING CADD PLATE & SHEET :

-Click icon Plate & Sheet Version 4 on the Desktop and open it.

15.2- SELECT COMMAND :

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Practical instructions :
1. Once open, click Other Shapes and Tools
2. Click Pipe / Cone Through a Plate
3. Double click Other Shapes and Tools - Pipe / Cone Through a Plate @
click on object
4. Click continue to proceed.

15.3- SELECT OBJECT:

Practical instructions : (Fullfill all the Global Instruction)
1. Once open,click tools – Global Options

2. Set the color (cut lines,text,press lines,dimension lines,graphics
background and border)

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3. Fulfills all the General Requirements (press lines,press line length,number
of decimals,default text size,number of decimals,sizes and material
thickness)

4. Fulfills all the DXF Requirements :

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5. Fulfills all the Printing Requirements :

6. Fulfills all the Material Requirements(units and currency) :

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7. Lastly for Global Option, fulfills all the Dimensions Requirements :

15.4- ENTER VALUE :

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Practical instructions :

1. Enter value for Base Diameter
2. Enter value for Length X
3. Enter value for Height Y
4. Enter value for Center Distance X
5. Enter value for Center Distance Y
6. Enter value for Angle

15.5- EXECUTE DRAWING :

Practical instructions :

1. Click icon to execute drawing development

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2. Click properties icon fulfill the number of Press Lines, Press Line
Length,Type of pattern, Material Properties,Pattern Spacing and Router
Groove Dimension and then click OK

3. Click Project Identification icon and then fulfill the requirement such
as date,project ID, drawn by and description.Tick display to display the
table and then click OK

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4. Click Label icon to display the details and to change the details such

as (text color / change font / print / save / help) and the tick display and

then click OK.

5. Click Dimension to display the dimension or edit the dimension.

Dimensioning
Dimensions may be applied automatically or manually. The following provides a brief
overview of each method.

Overview of Auto Dimensions
There are several modes of Auto Dimension available. Auto Dimensions may only be
applied to pattern View, not to the wire-frame model. The Auto Dimension Options are
enabled by selecting from the “Dimension “pull-down menu or by clicking on the tool bar
button:

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The text size for the dimensions is shown on the drop down list. While text size
may be changed after the dimensions have been applied, it is more efficient to
set the size before.

The true length of each press line has been placed onto the pattern. Experiment
by turning various modes on and off by returning to the Auto Dimension options.

Overview of Manual Dimensions
A horizontal, vertical or aligned dimension may be applied between any two
points. Manual dimensions can be applied to the pattern and also orthographic
views of the 3D model. That is, the Top View, Front View and Side Views but not
isometric or rotated views.

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To manually apply a horizontal dimension, click on a toolbar button. Click a point
on the pattern using the left mouse button and hold it down. The dimension will
find the closest point. A small circle will appear at each point as the mouse
moves over the pattern. Keep the mouse button down as you drag the mouse to
the second point and then release it when the second small circle is over the
required point. Move the mouse until the dimension line is in the correct position
and click again.

Horizontal and vertical dimensions applied manually to the pattern.

Auto Dimension Modes

True Lengths
This mode displays the “true length” of each press line as an aid to marking the
shape onto the material or to check the shape and scale of the pattern.

Step-Off Dimensions
This mode displays the straight-line distance from the end of one press line to the
end of the next press line. Step-Off Dimensions may be applied around the base
profile or around the top profile.

Diagonal Dimensions
This mode displays the diagonal distance from the end of one press line to the
start of the next press line. This provides a means of triangulating the shape to
mark it onto the material or to check the printed shape. See below for examples
of each of the Auto Dimension modes described above.

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Apply “True Length” dimensions along each press line and step-off distances
around the top and base.

Coordinate Grid and Coordinate Table
This mode displays the X and Y coordinates of each point around the profile.
That is, the horizontal and vertical distances measured from the left edge and
base line of the pattern. If the shape has multiple parts, such as an elbow, you
may dimension each part from a common datum (0,0) point. Alternatively you
may dimension each part from an individual datum point.

Coordinate Grid
This mode displays the distances in the X and Y-axes (as measured from the left
hand edge and base line of the pattern.

Coordinate Table
This mode marks the ends of each press line with a code. A table of coordinates
of each corresponding point may be viewed by clicking the co-ordinate table
button on the tool bar.

The Table of Coordinates may be positioned on the drawing by clicking the “ok”
button, saved as a text file by using “save” option or printed directly by using
“print option”.

If you are using small page sizes such as A4, it is usually better to print the table
on a page of its own by clicking the “Print” button, rather than including it on the
drawing. The display of the table on the drawing is controlled by the “Display
Label” checkbox. To hide the table, deselect the checkbox. However, if you are
sending the result to AutoCAD, displaying it on the drawing is a convenient way
of exporting both the pattern and the Coordinate Table.

Frame and Area
When this mode is selected a rectangle is drawn around the shape with the
length, width and area displayed. This is useful for determining the size of the
material required to make the shape. It is also useful for finding the most
economical arrangement of the pattern. Sometimes rotating the shape allows the
shape to be cut from a smaller piece of material. If the shape is made up of
multiple parts such as an elbow, the Frame and Area may be applied to the entire
shape or to the individual parts comprising the shape.

Item Number
When this mode is selected the number of the item is displayed on the pattern.
The date and time that the shape was last updated is also displayed. The item
number may not be necessary for single part items but is useful when the pattern
is of an item made from several parts, such as a segmented bend.

The item number is also displayed on the wire-frame model to help identify the
parts.

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Bend Angles
When this mode is selected the bend angle is displayed down each press line. To
distinguish it from a true length dimension is shown in brackets and with a degree
symbol (160).

The press lines are to be pressed down. For example, the press lines on the
transition shown are on the inside surface. The angle displayed is the angle
between two adjacent faces measured at right angles to the press line.

13.6- VIEW DRAWING COORDINATE :

Practical instructions :

Setting Instructions :

1. Click Tools at the menu bar

2. Choose Global Option
3. Click Dimension
4. Click Coordinate Dimensions
5. Click Coordinate Table
6. Click save and Exit

To View Drawing Coordinate :

1. Click Dimension at the menu bar
2. Click Coordinate Table
3. Tick Display
4. Click OK button.

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15.6.1- VIEW MASS PROPERTIES :

To View Mass Properties :

1. Click Mass Properties icon
2. Tick Display
3. Click OK button.

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Final execute drawing development :

15.7- PLOT DRAWING :

Print Setup

The Print Setup dialog box is provided so that you can:
Select a printer
Set a page size
Set the page orientation (portrait or landscape mode)
Set the units to be either inches or millimeters
Decide whether the printed drawing is in color or monochrome (black and
white).

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You will find access to the Print Setup dialog from the „File‟ pull-down menu.. The
initial (default) settings may be set and saved in „Global Options‟.The Two
Modes of Printing
Printing a Template: Select this option if you wish to print the unfolded pattern to
scale to use as a template. The first preview will show the extents of the shape
and the number of pages required to print it. Printing the Current View:
Selecting this option allows the user to print the current view including a 3D
model view or a pattern view but it will not be to scale. It will be printed at the
current zoom scale.

Selecting an option will automatically display the „Print Preview‟ window. The
preview window will have different options depending on whether you have
chosen to print a template or a view.

Printing the Current View
Select “Print current view” to print what is shown on the screen. By clicking the
“Display/Hide Scale on Border” button you can choose to print showing the

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border and/or ruler marks. There is only one “Select Printing Operation” option
when in this mode and that is to print what displayed.

Printing a Template
Select “Print template” if you wish to print a full-size pattern. You can choose to
print the template with or without scale marks by toggling the “Show/hide Scale
on Borders” button.

If the shape is larger than the sheet size selected in „Printer Setup‟, the outline
of multiple sheets will be superimposed over the shape. You may print individual
sheets, all of the sheets or the entire shape scaled down to fit on a single sheet.
This selection is made from the drop-down list in the upper left corner of the
“Print Preview” window. You can print on one page or multiple pages depending
on the pattern size and orientation. If printing on multiple pages the page
numbers will be shown in the bottom left hand corner (A1, A2 … B1, B2….) of the
sheet.

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QUESTIONS :

a. Calculate Total Area(project) Development in meter square (m²) ?
b. Calculate perimeter of the development(actual) in millimeter (mm) ?
c. Calculate perimeter of the plate(single) in millimeter (mm) ?
d. Calculate Mass of the project(single and actual) in kilogram(kg) ?
e. Calculate cost of the project (actual development) ?

REFERENCE :

Plate & Sheet Professional V4 Manual and Information Book

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