How to use Blend Tool - Parallel Blend > Protrusion/Thin/Surface

Download the Part File Here

Blends:

 The blend command creates a feature by joining two or more planar sections at their edges to form a continuous feature. The number of entities in each section should be the same.

There are three types of blends;

1. Parallel blend
2. Rotational blend
3. General blend

Here we see how to create a Parallel Blend:

Parallel blends are created between sections that are drawn parallel to each other.

The following task explains how to create a parallel blend;

1. Open a new part file and name it as Parallel Blend.
2. Click Insert > Blend > Protrusion… from the Main Menu. The BLEND OPTS menu is displayed in the Menu Manager.
3. Choose Parallel > Regular Sec > Sketch Sec and Click Done in the BLEND OPTS menu.

Projected Sec: This feature projects the section on the selected surface and it is used for parallel blends only.

Regular Sec: This feature uses the sketching plane as the section reference.

Select Sec: This feature selects already sectioned entities.

4. The Protrusion dialog box is now displayed for Parallel Blend.

The ATTRIBUTES menu is displayed prompting you to choose Straight or Smooth options from the menu Choose Straight and Click Done.

5. Select the TOP Datum plane as the sketching plane. A red arrow indicates the direction of feature being created. Click Okay in the DIRECTION submenu.
6. The SKET VIEW menu is displayed prompting for the Reference. Choose Right and select the RIGHT plane in the Graphics window.
7. Pro/ENGINEER takes you to the sketcher mode.
8. Draw a sketch of the rectangular cross section and then add constraints and dimension.

Note: You will notice that a start point is placed for the section. This start point must be must mentioned in same direction for all the section. You can set the start point direction by clicking on start point and right click and select start point option.

9. In the parallel blends, after drawing the first section, Right Click on geometry area and select Toggle Section or choose Sketch > Feature Tools > Toogle Section. You need to toggle the section and draw the next section.
10. When you choose Toggle Section, the previous section becomes inactive and appears gray in color.
11. Sketch the next section which is a circle of specified diameter.
12. The number of entities per section for a blend feature must be equal, so divide the section into four equal parts and change the start point.
13. Toggle section to sketch section 3.
14. Draw a square or circle or ellipse section and specify the start point on the upper left corner.
15. After you have completed sketching the sections, you have to specify the depth of each section. Then click OKAY MARK.
16.  The blend feature has been completed. Click Preview in the PROTRUSION dialog box to preview the feature.
17. Click OK button and the feature is completed. This completes the task