Figure 4.14 The model of the chassis and the front suspension

4.3.3 Creating Steering System Model

1. Creating Design Points

Select the Point tool and click the locations shown in Table 4.9 to place design points. Use the default settings for point, which are Add to Ground and Don’t Attach.

Table 4.9 Points Coordinate Locations

Points	X Location	Y Location	Z Location
Pitman_arm_pivot	-1624.0	451.0	172.5
Idler_arm_pivot	-1624.0	451.0	-172.5
Lower_sector_shaft_point	-1444.0	451.0	172.5
Idler_arm_center	-1444.0	451.0	-172.5
Steering_shaft_pivot	-1232.0	562.0	230.5
Steering_wheel_pivot	-873.5	678.6	260.0
Steering_wheel_center	-260.0	1033.2	260.0

2. Creating Steering System

Select the Cylinder tool . Select New Part. In the Radius text box, enter 15. Click Left_Tie_rod_inner and Pitman_arm_pivot to create a Cylinder between the two points. Rename the cylinder part, to Center_link (left ).

Select the Cylinder tool . Select Add to Part. In the Radius text box, enter 15. Select body: Center_link, select point: Pitman_arm_pivot and Idler_arm_pivot, to create the middle part of the Center_link.

Select the Cylinder tool . Select Add to Part. In the Radius text box, enter 15. Select body: Center_link, select point: Idler_arm_pivot and Right_Tie_rod_inner, to create the right part of the Center_link.

Select the Cylinder tool . Select New Part. In the Radius text box, enter 15. Click Pitman_arm_pivot and Lower_sector_shaft_point to create a Cylinder between the two points. Rename the cylinder part, to Pitman_arm.

Select the Cylinder tool . Select New Part. In the Radius text box, enter 15. Click Idler_arm_pivot and Idler_arm_center to create a Cylinder between the two points. Rename the cylinder part, to Idler_arm.

Figure 4.15 The model of the steering trapezium

Select the Cylinder tool . Select New Part. In the Radius text box, enter 15. Click Lower_sector_shaft_point and Steering_shaft_pivot to create a Cylinder between the two points. Rename the cylinder part, to Steering_gear.

Select the Cylinder tool . Select New Part. In the Radius text box, enter 15. Click Steering_shaft_pivot and Steering_wheel_pivot to create a Cylinder between the two points. Rename the cylinder part, to Steering_shaft.

Select the Cylinder tool . Select New Part. In the Radius text box, enter 15. Click Steering_wheel_center and Steering_wheel_pivot to create a Cylinder between the two points. Rename the cylinder part, to Steering_Wheel.

On the File menu, select Settings. Click Working Grid. The Working Grid Settings dialog box appears. In the Set Location box, select Pick, click design point: Steering_wheel_center. In the Set Orientation box, select Z-Axis, pick the axis direction of the Steering_wheel cylinder as to Z-Axis of Working Grid.

Select the Torus tool . Select Add to Part. In the Inner Radius and Outer Radius text box, enter 12 and 190. Select body: Steering_Wheel, select point: Steering_Wheel_ center, to create another part of the Steering_Wheel.

On the File menu, select Settings. Click Working Grid. Pick Polar. In the Circle Spacing and Radial Increments text box, enter 10 and 3. Select OK.

Select the Cylinder tool . Select Add to Part. In the Length and Radius text box, enter 190 and 8. Select body: Steering_Wheel, select center point: Steering_Wheel_center, to create three cylinders.