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ME-430 INTRODUCTION TO COMPUTER AIDED DESIGN RAZOR HANDLE Using Swept Blend

Pro/ENGINEER Wildfire 2.0

Dr. Herli Surjanhata

Create Swept Blend Protrusion of Razor Handle Set the working directory to e.g. ME-430 directory.

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File -> Set Working Directory…

Navigate the computer file system, and select the working directory e.g ME-430. Click on OK.

Create a new part called Razor_handle.prt

File -> New or click on

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Enter the name of razor_handle. Uncheck the box of Use default template.

Click OK.

Select the mmns_part_solid Template. OK.

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Now create the solid protrusion using Swept Blend.

From Insert pull down menu, select Swept Blend -> Protrusion.

Choose, Sketch Sec -> NrmToOriginTraj -> Done

Select Sketch Traj

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Pick FRONT datum plane as sketching plane,

then select Okay.

Top – Pick TOP datum plane as top reference.

Close the References dialog box.

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Select on Create a spline curve . Sketch the spline as shown below as the trajectory of the swept blend. Be sure to stat drawing the spline from the origin. There are five points altogether as shown.

The second point (next to the origin) should be parametrically positioned midway between the first and third points. Draw two construction lines; from the first to second points, then second to third points.

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Click and draw two straight lines.

Pick both lines, then right-click mouse button. Select Construction.

Click ,

Select the Equal constraint .

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Pick both construction lines (represented by dashed lines), and the length of the lines are now equal. Close the Constraints dialog box.

Dimension the FIVE-point spline as shown below.

Click the when finish with the trajectory. Before you begin to sketch any sections, you will now be prompted for where all the sections will be located. There will be a total of five sections sketched for this protrusion. Two will be at the endpoints (mandatory) and the other two win be at the datum points. The first location to be highlighted will be the second point of the sketched trajectory.

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Select Accept from the CONFIRM menu. The next point will then be highlighted so Accept this location. Choose Accept until all points are accepted.

To sketch the first section, accept the default Z axis rotation of zero. Sketch a circle section as shown. Be aware of the start point location. The diameter of the circle is 7 mm

Click the when finish with the first section. The system will prompt for the Z axis rotation.

Accept the default value and sketch section number two as shown in Figure below. Again, keep track of the start point, it must match up with the first section. Second section is an ellipse : 10 mm x 5 mm - major and minor radii.

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Select the ellipse icon .

Draw an ellipse and modify the major and minor radii of the ellipse to 10 mm and 5 mm – see figure. Make sure the center of the arc is located in the origin of the current coordinate system (light brown color).

Repeat the same procedure to sketch the third section, again using a Z axis rotation value of zero. See Figure below. Third section is an ellipse: 9.0 mm x 4 mm in major and minor radii.

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When finished with section three, sketch the fourth section as shown in Figure below. Again accept the default of zero for the Z axis rotation. Fourth section is a circle with 5 mm in diameter.

When finished with section four, sketch the final section as shown in Figure below. Again accept the default of zero for the Z axis rotation. Fifth section is an ellipse: 17.5 mm x 2.5 mm in major and minor radii. Be sure to Preview your feature elements prior to choosing OK, to check for twist in the swept blend due to start points not lining up. If there is a problem, use the "Sections" option from the dialog box and correct the problem.

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Click the when finish with the last section, then click the OK button to complete the swept blend feature creation. The resulted creation is shown below.

Create Cylindrical Both Sides Protrusion

Click .

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Click Placement -> Define.

Pick FRONT as Sketch Plane, and accept default, then click Sketch button.

Pick right end inclined line as additional reference – see figure. Close.

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Draw a circle and dimension it as shown in the figure

Click the , the select the Extrude to the next surface.

Select both side option . Enter 35 mm extrusion depth.

Select the .

Create Round on Circular Edges

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Create a 2.0 mm round on the circular edge of the flat end.

Click the Round Tool .

Enter the radius of the round 2.0 mm. Pick the circular edge as shown below.

Select the to complete the rounds. Create Emboss Feature To create cut feature on a surface, an offset feature will be used. First create a datum plane offset an arbitrary distance above the handle.

Click on the Datum Plane Tool .

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Pick the TOP datum plane and enter the Offset Translation of 20 mm.

Click OK. The datum plane DTM1 is created. Create a projected datum curve on the top right surface of the handle.

Edit -> Project…

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Click the Surfaces collector and select the top surface of the handle – see figure.

Pick References from the dashboard and set the top pull-down option to Project a sketch.

Pick to create a sketch for the projected datum curve. Select the offset datum plane DTM1 as sketching plane. Click Sketch button.

Sketch and dimension the following datum curve – see figure below.

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After completing the sketch, click on .

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Set the Direction option in the dashboard to Along direction. Pick DTM1 datum plane for direction reference.

Click to finish the creation of projected curve.

Create an offset feature by pre-selecting the top surfaces of the handle as shown below.

Pick the top two surfaces by left-click mouse button.

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Edit -> Offset

Change the offset type from Standard Offset

Feature to Expand Feature .

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Click Options from the dashboard, and pick Sketched Region. Set the Side surface normal to Surface. Pick Define and select the offset datum plane DTM1 previously created as sketching plane.

Click on Sketch button, and Close the References dialog box.

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In the sketcher, pick - Create an entity from an edge icon.

Select Loop in the Type dialog box. Pick the projected datum curve shown in the figure below.

OK -> Close.

Click .

In the dashboard, change the depth to 0.9 mm. Be sure it is cut feature into the handle.

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Use the Change direction of the offset to the other side.

Click to finish the offset cut.

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Right-click the projected curve Project1, and select Hide.

Engrave Text Create a projected datum curve on the top left surface of the handle.

Edit -> Project…

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Click the Surfaces collector and select the top surface of the handle – see figure.

Pick References from the dashboard and set the top pull-down option to Project a sketch.

Pick to create a sketch for the projected datum curve. Select the offset datum plane DTM1 as sketching plane. Click Sketch button.

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Click .

Sketch and dimension the following text – see figure below. Note: Font and dimensions are not important. Use your own values if necessary.

After completing the sketch, click on .

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Set the Direction option in the dashboard to Along direction. Pick DTM1 datum plane for direction reference.

Click to finish the creation of projected curve.

Create an offset feature by pre-selecting the top surfaces of the handle as shown below.

Pick the top two surfaces by left-click mouse button.

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Edit -> Offset

Change the offset type from Standard Offset

Feature to Expand Feature .

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Click Options from the dashboard, and pick Sketched Region. Set the Side surface normal to Surface. Pick Define and select the offset datum plane DTM1 previously created as sketching plane.

Click on Sketch button, and Close the References dialog box.

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In the sketcher, pick - Create an entity from an edge icon.

Select Loop in the Type dialog box. Pick each datum curve letter shown in the figure below.

Once all letters have been selected, click OK -> Close.

Click .

In the dashboard, change the depth to 0.2 mm. Be sure it is cut feature into the handle. Use the Change direction of the offset to the other side.

Click to finish the offset cut. Right-click the projected curve Project2, and select Hide.

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Change the color of the razor handle as shown below.