Tài liệu BRAKE ROTOR USING UDF & FAMILY TABLE ppt

For Sketch Orientation Reference pick RIGHT datum plane, and set Orientation to Right.. For Sketch Orientation Reference pick DTM1 datum plane, and set Orientation to Top.. Done -> Done

ME-430 Introduction to Computer Aided Design BRAKE ROTOR USING UDF & FAMILY TABLE -

Pro/ENGINEER Wildfire 2.0

Dr Herli Surjanhata

In a system window, create a new directory called Brake_rotor under ME-430

directory (e.g J:\PTC_Working_Dir\ME-430\Brake_rotor) if this has NOT been done

From File pull down menu, select Set Working Directory

Select Working Directory dialog box appears

Select the ME-430\Brake_rotor

directory to highlight it and select

OK All files created in this session will be stored in ME-430\Brake_rotor

directory

Note:

You can also create a new directory

by selecting

CREATE A UDF PART

Pick the Create a new object icon

Type in udf_rotor for the name of the new part

Click OK

CREATE A BASE FEATURE – A Solid Disk Protrusion

Create the base feature – Pick the Extrude Tool icon

In the dashboard, click

Pick Front datum plane as Sketch Plane

For Sketch Orientation Reference pick

RIGHT datum plane, and set Orientation to

Right This option is default option! Then click the Sketch button

Click the Close button in the

References dialog box

Click on Draw a circle centered at the origin of coordinate system

Dimension the circle for 10 inches as shown below

Click on

Change the depth of protrusion to 1.0

Choose both sides protrusion icon

Click

Click and select Standard Orientation

CREATE THREE HOLES USING CUT PROTRUSION

Create the base feature – Pick the

Extrude Tool icon

In the dashboard, click on the

Remove Material icon Next, click ->

Pick the front surface of the disk as

Sketch Plane

For Sketch Orientation Reference pick

DTM1 datum plane, and set Orientation

to Top Then click the Sketch button

Pick on the horizontal line (thru default coordinate system) that represent DTM1

datum plane Pick on the circle

Click the Close button in the

References dialog box

Draw two centerlines, and dimension it as shown below

Zoom in to the right portion of the disk Draw and dimension three circles of 0.25 in

as shown below

Click on

Choose on Through All icon for Options

The part shown above will be used to create the User Defined Feature (UDF) and the UDF will be created in the vented brake rotor Instances of the brake rotor will be created that are 10, 11, 12, and 13 inches in diameter These instances will contain different cross drill patterns

Click Stand Alone -> Done

Choose Yes to the prompt “Do you want to include reference part?”

Select DTM1, the hole feature, and the chamfer in the Model Tree

Done -> Done Return

For the axis prompt, enter Select the center axis of the rotor

For the front rotor surface prompt, enter

Select the cross drill placement surface Hit [Enter]

For the outer surface prompt, enter Select the outside surface Hit [Enter]

For the back rotor surface prompt, enter Select the rear rotor surface Hit [Enter]

Click on Done/Return to complete the prompts

Select Family Table Click on Define The Family Table dialog box appears

Click on

Click on the cut (holes) to display the dimensions

Zoom into the area where the three holes are located

Pick on Ø.25, and enter hole_diam

for the symbol

Click OK

Click on

Enter the values

as shown in the figure

Repeat the same technique to complete the Family Table as shown below

Click OK to complete the Family Table

OK -> Done/Return

Create a relation for the spacing

Tools -> Relations

The Relations dialog box appears

Enter the relation in the editor; “d34=d33” Note that your parameters may be different from this tutorial

The relation that has been created is d34=d33

Click on OK

Save and close UDF_ROTOR.PRT

CREATE A ROTOR PART

Pick the Create a new object icon

Type in rotor for the name of the new part

Click OK

CREATE A BASE FEATURE – A Hollow Disk Protrusion

Create the base feature – Pick the Extrude Tool icon

In the dashboard, click

Pick Front datum plane as Sketch Plane

For Sketch Orientation Reference pick

RIGHT datum plane, and set Orientation to

Right This option is default option! Then click the Sketch button

Click the Close button in the

References dialog box

Click on Draw two concentric circles centered at the origin of coordinate system

Dimension the circles for 10 and 5 inches as shown below

Click on

Change the depth of protrusion to

0.375

Click

Click and select Standard Orientation

CREATE VANES FOR THE ROTOR

Create the base feature – Pick the

Extrude Tool icon

In the dashboard, enter 0.5 for the thickness of protrusion

Pick front surface of the disk as Sketch Plane

For Sketch Orientation Reference,

move the Section dialog box to reveal the Datum Plane Tool icon

Click on

Pick on axis of the disk Hold down the

Ctrl key, and pick the TOP datum plane Set the value of Offset Rotation to 45 Click OK

Back to Section dialog box, under

Sketch Orientation, pick the newly created datum plane DTM1 as reference Set the Orientation to Top

Click on Sketch button

Pick the inner and outer circles as reference

Also pick the DTM1 (horizontal thru the coordinate system) as additional

reference

Click the Close button in the

References dialog box

Draw and dimension the following section

Click on , then complete the protrusion by clicking

Expand the Group AUTO_GROUP of the vane, and right-click it

Select Unhide

Pick on the vane (Group AUTO_GROUP) in the Model Tree or click it in the graphic area

Click on the Pattern Tool icon

Click on Dimensions tab

Pick on 45 degrees angle value Enter the Increment of 18

Change the number of instances including original to 20

Click on

CREATE A REVOLVE PROTRUSION – Front Part of the Rotor

Create the base feature – Pick the

Revolve Tool icon

In the dashboard, click

Pick Top datum plane as Sketch Plane

For Sketch Orientation Reference pick

RIGHT datum plane, and set Orientation

to Top Then click the Sketch button

In addition to the RIGHT and FRONT

datum planes as references, pick upper most horizontal lines, and also right most edge as references

Click the Close button in the

References dialog box

Click the small forward > icon to expand,

and pick Draw a horizontal centerline through coordinate system This centerline is used as axis of revolution of the revolved section

Use the appropriate Sketcher Tools to create and dimension the section as shown below – make sure the section is closed

Pick as reference

Click on , then complete the revolved protrusion by clicking

Use diametrical dimensions!!!!

CREATE FOUR HOLES

Click on the Hole Tool icon

Click on the Placement tab Select the flat most front surface as the placement

plane Change the option for creating the hole to Diameter

Click on the area under Secondary references to activate it, then select TOP

datum plane, and change the angle to 45

Hold down Ctrl key, and select the center axis of the rotor as Diameter reference

Change the bolt center diameter to 4.25

Change the diameter of the hole to 0.50, and depth of hole to 0.375

Create 4 holes in this surface

Click on

Pattern the hole

Select the hole in the Model Tree Click on

Pick on 45 degree dimension value Change the

Increment 90 Change the number

of instances to 4

Click on

CREATE ROUNDS

Click on Change the radius of round to 0.10 Pick the edges as shown below

CREATE CHAMFERS 45º X 0.05

Click on , and chamfer the four holes as shown below

APPLYING USER DEFINED FEATURE (UDF) to ROTOR

Insert -> User-Defined Feature

Select cross_drills.gph Click on Open

Hit Enter for No

Choose 10_INCH in the Select Instance dialog box

Click Open

Independent -> Done

Same Dims -> Done

Normal -> Done

Select the center axis of the rotor

Select TOP datum plane for the angular reference plane

Select the back front surface of the rotor for the placement surface

Select the outer rotor surface for the outside rotor surface

Select the back rotor surface for the rear rotor surface

Okay -> Okay -> Done

CREATE SIX INSTANCES OF THE CROSS DRILLED

Choose the zero degree angle, and set the increment to 60 degrees

Change the number of instances to 6

Click on

CREATE INSTANCES OF BRAKE ROTOR

Tools -> Family Table

The Family Table dialog box appears

Yes [Enter]

Click on OK

Fill out the Family Table as shown below

Click OK

Save the rotor

Click Open rotor.prt

Choose 13_INCH instance, then click

Open

The 13-inch brake rotor will be opened as shown below