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Exercise Three - Childs Toy Train

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Get to Know your Mouse

Left mouse button

Used for most operations such as selecting

icons, menus and graphic entities.

Right mouse button

Brings up additional options

Select in thetutorial means

using the

left mouse

button.

The Esc

key on your

keyboard is

used to

cancel a

command.

When Inventor startsyou will see this

Start-up dialogue box.Select the Metric tab

.

Then select the

Standard(mm).pt

icon

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Lets start Sketching using InventorRough Sketching is not

precise and is used to sketch

the geometry so that it

closely resembles the shape

Select the line icon

Observe when you

hover the mouse

pointer over any icon a

tool tip will tell you the

icons purpose.

Look at the message

bar.

Select point

to start the

line.

Select point

to stop the

line.

The Constraint symbol shown

ensures the line will be horizontal.

If we move the mouse to

point 3 the constraintsymbol tells us the line will

be perpendicular to the

first line (entity)

Drawing lines its this simple

Screen Layout

Sketch panel

toolbar

3D Indicator

Message / Status bar

Graphics window

Take a few

minutes to lookat this screen

Standard

Toolbar

PullDown

Menus

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If you need to Delete a line do the

following:

Right click the mouse button and select

done or press the Esc key on the

keyboard to finish the command.

Move the curser onto the line you want

to remove.

The line will turn red.

Right click the mouse button and selectDelete from the screen menu The

line is gone.

Remember you need to keep themouse pointer against the line when

you right click the mouse.

On your own delete the other line.

If you need to Delete a line do the

following:


done or press the Esc key on the

keyboard to finish the command.

Move the curser onto the line you want

to remove.

The line will turn red.


Delete from the screen menu The

line is gone.

Remember you need to keep the

mouse pointer against the line when

you right click the mouse.

On your own delete the other line.

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Select point 1

roughly where

shown and drawthe next five lines

approximately atthe points 1 to 6

Make sure you have

parallel and dashed

constraint active beforeyou select point 6.

Remember sizes are

not important at this

stage.

parallel constraint

As you approach point 10 you should see a dashed linebetween point 10 and point 1.

Select point 10 then select point 1 to complete the shape.Press the Esc key to finish the Command.

First Point

Well Done you havejust completed your

first Closed shape.

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.

From the 2D Sketch

panel select the

General Dimension

Icon.

Select the line to dimension.

Move the mouse upwards

notice the dimension and line

follows the mouse pointer.

Select a position similar to the

position shown.

A Edit dimension box willappear. The dimension will be

shown highlighted press the

delete key

Type 30 you dont have to add

mm after the dimension. Select

the green tick

Edit DimensionBox

Position the

dimension as shown

Delete the original

dimension and

type 30 you donthave to add mm

after the dimension

Select the green

tick.

Applying Dimensions to your closed shape

To dimension across a

feature follow the steps.

Select the line at Position

1 and Position 2.

Place the dimension as

shown.

You will have to edit the

size.

Position 1

Position 2

Drag the mouse to this

position and edit as shown

Finish the

dimensions

as shown.

Finish the

dimensions

as shown.

5

10

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1. Select Extrude from

the Part Features

panel

2. In the Extrude Pop up

window enter 50 as the

extrusion depth.

3.Notice that the sketch

region is automatically

selected as the extrusion

profile.

Right click anywhere on the

graphics area and select

Finish Sketch from the menu.

This action will change the 2DSketching Panel and replace

it with Part Features panel.

You are ready to turn your

sketch into a 3D part.

Dont forget to

press Esc key to

finish dimensioning.

The view still looks 2D lets view it in 3D

Right click anywhere on

the graphics area andselect Isometric View

from the menu.

You can return to your

Isometric view at any

time. It is sometimes

called the Safe View.

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Inventor has many other ways to

look at your model apart from

Isometric view

Lets look at Rotate

Drag the handles to

rotate about the

horizontal and

vertical axes watch

for the curser

change.

You can always

return to the

Isometric View

(Safe View)

Handle

Circular

Rim

Centre

Drag to

Rotate

about

Horizontal

Axis.

Free

Rotation

Drag to

Rotate

about

Vertical

Axis.

Drag the rim to

rotate about the

axis

perpendicular to

displayed view.

Thats some of the

basics completed.

We will let you get on

with this tutorialGood Luck and

get Inventering

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Return back to the

Isometric View.

We are going to add two holes, onto a face of the body. The

easiest way is to pinpoint the centres of the holes and use theHole feature to create the holes.

Select the Look At icon

and select the face asshown.

The Look At command

aligns the sketch plane

with the selected entity.

The choice isyours either

select the 2D

Sketch Icon.

Or right clickand select

from menu.

Selectthe face

as

shown

It should look like this

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Select the Point, Hole Centre icon.

Select a location as shown, drag the

cursor keeping it in line and select

another position as shown.

Hidden linemeans it aligned

Should look like this.

Dimension as shown

using the General

Dimension icon.

They should be edited to look

like this

Your dimensions may be

different from the above

Before After

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Dimension as shown

using the General

Dimension icon.

They should be edited to look

like this

Your dimensions may be

different from the above

Before After

In the Part Feature panel select the Holecommand

In the Holes

dialogue box

notice that the

Centres button

is pressed down

: Inventor will

locate the two

centresautomatically.

Do not select

OKjust yet

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Set this

dimension

to 10mm

Set the Termination to

Through All

When you select OKit should look like

this.

Select the Centre point

circle icon.

Select an approximateposition and drag a circle.

Dimension it as shown.

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Return to Isometric View

and press Esc to Finish

Dimensioning.

Finish Sketching.

Select Extrude fromPart Features panel

Set Extents to

Distance and

Depth to 65mm

Select OK.

Hopefully yours lookslike this.

Use Rotate to look at

it.

When you havefinished return to

Isometric View.

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On your own do the following set a new

2D Sketch Plane as shown.

Using Centre Point Circle drag a

suitable circle at the centre of the

existing centre and dimension it.

Edit the dimension to show 10mm

Finish the dimensions and

sketch remember Esc and

right mouse button.

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From the Part

Features panel

select Extrude.

Set Extents to

Distance and Depth

to 5mm. Select OK.

Hope yours looks

like this ?

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Use the Rotate icon to position

the model like this

Use the Look At icon

and select this surface

Select the Same surface

for a new 2D sketch

From the 2D

Sketch Panel

select Two point

rectangle.

Create a

rectangle by

selecting the

first point

location as

shown

Move the

cursor

down and

select the

second

location as

shown

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On your own

dimension and

edit the

dimension as

shown.

From the Part Features menu selectExtrude. Select the rectangle and set

the Extents to Distance and the

depth to 50mm. Ensure the direction is

as shown. Make sure

the direction

is upward.

Finish the dimensions and

sketch rememberEsc key

and right mouse button.

Does your train body

look like this ?

Lets hope so.

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Lets add some axels for

wheels.

Use the Look At icon to

achieve this view

Select this surface for

our new 2D Sketch

plane.On your own - Using

Centre point circle drag

two suitable circles and

Edit the dimension to the

values as shown.

On your own Extrude the circles to a depth of 10mm

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Select the Isometric view

Hopefully it looks like this.

Now we need to add two

other axels. after all we will

need four wheels on our

train.

Task - On your own draw two circles of 5mm diameter and

dimension them as shown.

5mm Diameter

Now do the same on the other side use the Rotate command to turn your

model over and Look At to achieve this view.

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After you have Extruded the shape

you can Rotate it to see how your

train looks.

On your own Extrude the axels to a depth of 10mm

Create a new 2D Sketch plane on

the surface shown.

We will add a funnel for the smoke

Use the Look At icon to view the top of the Train

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.

Tip - if you move

the cursor

towards the

position shown.

First the cursor

will change to a

small green dot

to signal that the

mid point has

been identified.

Then drag and

select the twopositions. Look

out for the

dashed line.

Using Centre point circle draw two suitable circles and dimension them.

Edit the dimension to show 12mm & 16mm as shown.

Further dimension the circle centres as

shown

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Esc

dimensioning

and Finish

Sketch. Rotatethe train into this

position shown.

Select Extrude and in the

Extents box Select To Next.

Select the same direction as

shown. Note a green arrow

pointing downwards will appear.This means that the extrusion will

start at the circles and finish at

the train body. If the arrow points upwards click this icon

Watch Arrow

Hopefully it looks

like this ?

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We will drill a hole in the funnel

Select the Hole icon from the Part

Features panel.

Set Termination to Distance and the

depth to 15mm.

Diameterset to 12mm

Select the Centres button and select

the centre of the funnel.

Select OK.

Distance

Diameter

Use the Rotate to

look at your train

Lets add some Radii

to remove the sharp

edges after all its

meant to be a youngChilds toy.

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Locate this icon and select it. Note that 3 options are available

lets look at them in turn.

Hidden Edge display : Shows all edges as lines but keeps shaded surfaces.

Shaded display : This is the Normal us so far looks realistic

Wire Frame display : Shows all surfaces as a wire frame no shading.

Shaded Display Wire Frame DisplayHidden Edge Display

Keep your Train in the

Wireframe Display.Select the Fillet from the Part

Features Panel.

Inside the dialogue box .

Set the Radius to 2mm.

Select the pencil icon and

notice it changes to an

arrow. You are ready to

select the Edges that

require a Fillet. Try to pickas shown above.

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Change the view from

Wireframe Display back

to Shaded Display. You

can see the radii are

starting to give our model

a more realistic look.

However we will require a

few more to finish it.

Change back to Wireframeview and select Fillet again.

Leave the radius set to 2 and

select the additional edges as

shown.

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Change display to

Shaded Display

and use the Rotate

to check out your

model . If it looks

like this well done.

The cylinder shape next to the funnel would

look more realistic if it was filleted with a full

radius.

Set the radius to 6

and select the

edge as shown.

This is how it should look

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Select the Fillet from

the Part Features

Panel. Set the display

to Wireframe Display

and the radius size to

2 and select thesurfaces as shown.

Tip use Rotate to

rotate the model this

will enable you to pick

both sides of the train.

Use Rotate to view your

model.

Looks even more

realistic than before.

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Almost forgot thewindows for the

driver. Select Fillet.

Set the fillet size to I

mm and select the

edges. Notice the

train is not in

Wireframe Display

you can work in any

form of display mode

that suits you.

Thats the fillet radiicompleted. Lets

add a chamfer to

the wheel axles.

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Select the Chamfercommand

from the Part Features Panel.

Set the distance to 1mm.

Select the edges as shown.

Select the Look at

Icon Select the face

shown at the front ofthe train as a new

sketch area

Using the Two point

rectangulartool

draw a shape in a

similar position to the

one shown.

Dimension the

rectangle as

shown.

Esc. and Finish

Sketch.

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On your own

Extrude the shapes depth to 10mm

Select the Look At

icon and select the

face . Make this face

a new 2D sketch

Place a Point, Hole centre

as shown. Look for the

hidden line to this is telling

you the centre is in line with

the mid point of the line.

Drag a Centre point circle from the

new centre point. Make sure it

touches the outside line the dot will

show green to signify that its

tangent to that line.

Draw two Lines tangent to

the circle as shown from the

corners of the rectangle

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Using the Trim command from the 2D sketch

Panel, trim the circle as shown by selecting it.

Dimension &Edit

the radius to

3mm.

Esc. and Finish

Sketch.

Extrude the shape .

Make sure Extents

are set To Next.

The arrow should

point down.

Select Cut

Make sure you selectthis area for the

Profile

Select OK

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On your own create a

new sketch plane and

draw a circle at the

centre of the existing

one and dimension it.

Edit the dimension to 2mm.

Select the tick.

On your own Extrude the 2mm

circle. Set Extents To Next.

The panel above should help

Set the Fillet to

1mm and select

the edges as

shown.The result should look

like this.

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Create a new 2D Sketch

plane at the back of the train

as shown. Draw a 2point

rectangular shape and

dimension it as shown.

New 2D Sketch plane

Rotate the view Esc.and Finish sketch.

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Draw and

dimensionthe circle as

shown.

On your own draw a 2mm Circle at the centre of

the existing circle and extrude as before.

Remember to trim the 3 Radius circle.

On your own Extrude the shape for a

depth of 10mm.

Extruded shape

Complete the Task by

adding a 1mm Radius to the

surfaces shown.

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Well how did your

train shape up ?

Looks like we

need some

wheels.

Select this surface using the

Look At icon.

You will need to Rotate your

model.

Draw and dimension

two circles as

shown.

Place them at the

centre of the axels.

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Extrude both wheels to a

depth of 8mm

Fillet both wheels

using a radius of

2mm.

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Do the same on the other side its that easy.

Use Rotate to look at

your work if you got this

far well done.

Save your work.

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Save your Train in this position before starting the

next section

Use the look at Icon to achieve this.

Documents

ex3 train