Engine Casing

Step 1We will begin to draw the engine casing by creating a rectangle using the Two Point Rectangle tool.

Step 2:On the sketch panel, left click once to place the rectangle and drag it towards the opposite side; after the body of the rectangle is created, left click again to finish it.

Click here

Click here to place the rectangle

Now click here to finish.

Step 3:It is necessary to dimension the drawing and in this case, each side is 50mm in length. Click on General Dimension and then select the line you wish to dimension. When you hover over the line it will change colour to red and when you click on it, it will turn blue. This means that you can now edit the dimension.

Step 4:If you left click on the dimension a box will appear. This box allows you to enter the size you require.

Select General Dimension

Select this line and drag to the left.

Delete the default size and change to 50mm.

Now select the green ‘tick’.

Step 5: Do the same for the bottom line.

This will change the rectangle into a square 50mm x 50mm.

Step 6:At this stage, it is necessary to add width to our drawing and we do this by selecting Return which takes us to the parts menu.

From the parts menu, we will select Extrusion and enter 100mm into the extrusion box.

Step 7: Looking at the Isometric view, it’s possible to see the effect of the extrusion.

Select Extrude Change to 100mm

Step 8:Selecting the correct positions for the forward and rear funnels is our next task. Use the ‘Look at’ tool to select the face on which we are going to work.Then select Sketch and click on the same face again. This will result in a grid forming over your sketch.

Step 9:As the base of the funnels is circular we will be using the Centre point circle tool to start our drawings. Select this tool and near the right hand edge of the draw a circle, as shown below.

Step 10:

‘Look at’ icon

To ensure the circle is in the correct position, it will be necessary to dimension it – just as we did before. The position for the rear funnel is: 40mm from the right hand edge; 25mm from the top edge & 20mm in diameter.

Select General Dimension and click on the right hand edge (shown below on the left) and then left click on the centre of the circle (shown below on the right).

A dimension should then appear which you must change to 40mm. This is the distance between the centre and right hand edge now set.

Step 11:Repeat the same steps to set the distance between the top line and the centre to 25mm.

Distance set to 40mm

Distance set to 25mm

Step 12: Now click anywhere on the circumference of the circle and change the size to 20mm.

Step 13:Using the information from the sheet, draw the leading funnel in the correct position and to the correct dimensions. As shown below.

Step 14:We now have to extrude the bases for the funnels. Unlike the previous extrusion, we will not be adding material but removing it instead.As we did previously, select Return, Extrude and select both circles for extrusion.

Step 15:

Diameter set to 20mm.

Select both circles.

In the Extrusion box select Cut and change the distance to 10mm.

Your drawing will now look like this:

Step 16:

Select ‘Cut’Change distance to 10mm

It is now time to round the edges and to do this we use the fillet tool. Select Fillet on the left hand menu and then select the two 100mm lines running alongside the extrusions.

Now change the radius to 25mm

and select ok…

You have now completed the Engine Casing