Tài liệu RAZOR HANDLE Using Swept Blend pptx

Click the when finish with the last section, then click the OK button to complete the swept blend feature creation.. Pick FRONT as Sketch Plane, and accept default, then click Sketch but

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

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

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

Click OK

Select the

mmns_part_solid Template

OK

Now create the solid protrusion using Swept Blend

From Insert

pull down menu,

select Swept Blend ->

Protrusion

Choose,

Sketch Sec -> NrmToOriginTraj -> Done

SelectSketch Traj

Pick FRONT datum plane as sketching plane,

then select Okay

Top – Pick TOP datum plane as top

reference

Closethe References dialog box

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

Click and draw two straight lines

Pick both lines, then click mouse button

right-Select Construction

Click ,

Select the Equal constraint

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

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

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

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

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

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

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

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

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…

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

Click Sketch button

Sketch and dimension the following datum curve – see figure below

After completing the sketch, click on

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

Edit -> Offset

Change the offset type from Standard Offset Feature to Expand Feature

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

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

Use the

Change direction

of the offset to the other side.

Click to finish the offset cut

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…

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

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

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 click mouse button

left-Edit -> Offset

Change the offset type from Standard Offset Feature to Expand Feature

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

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

Click to finish the offset cut

Right-click the projected curve Project2, and select Hide

Change the color of the razor handle as shown below