Tài liệu CREATE THE PARTS FOR ASSEMBLY pdf

CREATE A SUB-ASSEMBLY ROLLER_LINK Create an assembly called roller_link.asm This is done by clicking a Create New Object icon on the tool bar menu.. Select roller_link_plate.prt Click Op

ME-430 Introduction to Computer Aided Design CREATING ASSEMBLY OF CHAIN LINK

Pro/ENGINEER Wildfire 2.0

Dr Herli Surjanhata

CREATE THE PARTS FOR ASSEMBLY

Five parts are needed in this tutorial:

Then click OK button

1 The dimensions of roller_link_plate.prt are shown below All units in inches Extrusion depth is 0.04 in

Type in

roller_link_plate

here!

From Tools pull down menu select

Parameters

Enter Parameter name:

material

Enter Parameter type: string

Enter value for material:

steel

2 Create the second part called pin_link_plate,

File -> Save a Copy

Then Open pin_link_plate, modify and regenerate the dimensions as shown below,

Save the part pin_link_plate

Repeat the same procedure as shown above to create parameter for material = steel

3 Create the third part called bushing, the dimension is shown below

Modify this dimension to

be 0.38 in

Modify this

dimension to

be 0.16 in

Create Datum Axis for bushing if necessary, and setup the material = steel

4 Create the part called roller as shown below

Setup the following parameter:

Material = steel

5 Finally, create the last part called pin

Setup the following parameter:

Material = steel

We will first create two sub-assemblies called roller_link.asm and pin_link.asm, then assemble them together to form roller_chain.asm

Pro/ENGINEER provides a variety of constraint types for placement of components Note:

Automatic is the default constraint type of the Component Placement dialog box With the automatic option, references are selected for both the component and the assembly Pro/ENGINEER will determine the constraint to apply, but will provide you the option of selecting an alternative constraint

CREATE A SUB-ASSEMBLY ROLLER_LINK

Create an assembly called roller_link.asm This is done by clicking a Create New Object icon on the tool bar menu

Create New

Object icon

Then click OK button

here!

Select

roller_link_plate.prt

Click Open button

Component Placement window appears,

Keep the Constraints Type default (Automatic)

Pick RIGHT datum plane of

roller_link_plate, then pick

ASM_RIGHT datum plane of roller_link

(assembly default datum plane)

The two datum planes are automatically aligned

Repeat the same procedure for FRONT

datum plane of roller_link_plate and

ASM_FRONT datum plane of

roller_link Repeat again the same procedure for

TOP datum plane of roller_link_plate

and ASM_TOP datum plane of

roller_link The datum planes of roller_link_plate

and roller_link assembly are automatically aligned as shown in the figure on the left

Placement Status is now Fully Constrained

Click OK button

Assemble the next component bushing.prt Use Placement Constraint of Align, and

Align Offset to put them together Note that the Align Offset distance is 0.005 in

In other words, bushing is protruded out from the bottom surface of

roller_link_plate at 0.005 in

Click Open bushing.prt

Component Placement window appears

Click the axis A_1 of the bushing, then click the axis A_1 (on the left hole) of the

roller_link_plate

Click the bottom surface of the bushing, then click the bottom surface of the

roller_link_plate

Click the second Coincident (see Figure

on the left) to activate it

Choose 0.0, and type 0.005 to set the offset distance

Second, Pick the bottom surface of

roller link plate

First, Pick this surface – bottom surface of the bushing!

From Edit pull down menu, select Repeat

The Repeat Component

window appears

Hightlight only the Align constraint This chooses the constraint to be repeated Then select

Add button

Select aligning axis from assembly for new component occurance – pick the right axis

A_2 of roller_link_plate Click Confirm button

Assemble roller to bushing using Align, and Mate Offset Note that the top

surface of roller_link_plate is offset at 0.010 in from the bottom surface of roller

Click the axis A_1 of the roller, then click the axis A_1 of the bushing

Click the bottom surface of the roller, then click the top surface of the roller_link_plate

Type offset distance 0.01 [Enter]

Offset = 0.01

Repeat the placement of roller to the

bushing located at the right side of the assembly

The last operation of this sub-assembly will be to assemble another

roller_link_plate Use Align and Align Offset 0.005 in as Placement

Constraints Note that bushing is protruded out 0.005 from the top surface of

roller_link_plate located the top of sub-assembly

Offset = 0.005

Pictorial view of sub-assembly roller_link

To explode the view, click

or View -> View Manager The View Manager dialog box opens

Click Explode tab

Click if Properties button is shown

Click to explode the assembly

Click to in-explode an assembly

To modify the exploded view for better presentation,

Click Explode Position window appears, keep the default and pick one of the opening edges of the bushing

Pick this vertical edge

Pick and move the component you want

to translate Make sure you do not hold the left mouse button when moving the component

The resulted new arrangement is shown below

CREATE A SUB-ASSEMBLY PIN_LINK.ASM

Using the same procedure shown above, create pin_link.asm

Create a new assembly called pin_link

Start with Assembly Default Datum Planes, assemble pin_link_plate to the assembly default datum planes

The resulted operation is shown below

Assemble pin.prt to pin_link_plate by,

• Align the axis (e.g A_1) of the pin with the axis (e.g A_1) of the left hole

of the pin_link_plate

• Mate the bottom surface of pin head to the top surface of the

pin_link_plate

The resulted operation is shown below

Pick the pin.prt, and use a special function Edit -> Repeat for repeating the

placement of pin to the right hole

Select , and modify the expoded view for better presentation Save the assembly

sub-CREATE A TOTAL ASSEMBY ROLLE_CHAIN

The total assembly roller_chain will be consisted of

The resulted operation is shown below

Use Align and Mate to place

pin_link.asm to the total assembly Make sure the bottom surface of the

pin_link_plate mates the top surface of the bushing

Use Align and Mate to place

roller_link.asm to the total assembly

Use Edit -> Repeat

to place pin_link.asm to the right side

of the chain

pin_link.asm

is repeated here

Place pin_link_plate.prt to the total assembly

Use Align & Mate

to assemble the plate

Use Edit -> Repeat

to place pin_link_plate to the right side

Exploded view of

roller_chain

assembly