proe manipulating pipelines

6–1

Chapter 6

Manipulating Pipelines

Once a pipeline has been created in a piping assembly, there are a number of different options available to make changes to the pipeline display. By learning how to use these modification tools, you can make changes to your piping system more efficiently.

This chapter introduces:

The Route OptionThe Modify Pipe OptionThe Modify Dim OptionSet Display OptionInsert Point OptionP

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6–2

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ASCENT - Center for Technical Knowledge™

Pro/ENGINEER: Piping Design 6–3

6.1 Route

The Pipe Line option can only be used to create new pipelines. It cannot be used to redefine an existing pipeline.

As mentioned in “Chapter 3 Basic Routing”, to redefine a pipeline you must use the Route option in the PIPING menu to access the ROUTE PIPE menu. This menu is the same as the menu used to create the pipeline. The ROUTE PIPE menu is shown in Figure 6–1.

Figure 6–1

The four options described in Table 6–1 can be used to redefine and manipulate a pipeline segment.

Table 6–1

Option Description

Delete Last This option enables you to delete the last segment in the pipeline.

Redefine This option enables you to redefine the references for a selected pipeline segment.

Modify Dim This option enables you to modify the dimension values for any pipeline feature or assembly component.

Replace This option enables you to define a new pipeline segment to replace an existing one.P

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6–4 Pro/ENGINEER: Piping Design

6.2 Modify Pipe

The Modify Pipe option in the PIPING menu enables you to change characteristics of an existing pipeline. The options that can be redefined include the following:

The Pipe Envrnmt option enables you to change the characteristics of future pipeline segments. The Modify Pipe option enables you to change the characteristics of existing pipelines.

• Corner Type• Parameters• Line Stock• Flex Shape• Flow Direction

The Corner Type option enables you to change the default value of an existing corner, as shown in Figure 6–2. The options in the New Type pull-down menu only include the options that were selected when the Line Stock was defined.

If the Line Stock of a pipeline only enables bends and fittings, you cannot immediately apply a mitered corner to that pipeline. You must first edit the Line Stock to allow the miter and then use the Modify Pipe option to set the corner as a mitered corner.

Figure 6–2PR

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The Parameters option enables you to add user-defined parameter values to the pipeline or to review the bend parameter values that exist in the model, as shown in Figure 6–3.

Figure 6–3

The Line Stock option enables you to change the Line Stock file that was assigned to the pipeline when it was created. The PIPE MODIFY dialog box also enables you to create new Line Stock files or edit existing files, as shown in Figure 6–4.

Figure 6–4

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The Flex Shape option enables you to modify the shape of a flexible pipeline, as shown in Figure 6–5. These options are only available for pipelines that were created as flexible. The Fixed Length option enables you to define the “cut length” of the hose. In Figure 6–5 (dialog box on the left-hand side), the hose length was set to Fixed Length and a nominal value of 38.0 was specified.

To redefine a pipeline from straight to flexible you must redefine the pipeline, delete the segment, change the pipe environment option, and recreate the segment.

Figure 6–5

The Flow Direction option enables you to specify the flow direction for pipelines. The direction can be reversed by selecting Reverse.

Figure 6–6

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6.3 Modify Dim

The Modify Dim option enables you to change pipeline, assembly, and component dimensions. This option is located in both the PIPING and ROUTE PIPE menus, as shown in Figure 6–7. These options enable you to quickly incorporate any design changes into the piping assembly.

Figure 6–7

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6.4 Set Display

To simplify the display of a piping assembly, you can manipulate the display of solid pipelines to display them with their original centerline display. For example, in Figure 6–8, the pipelines in the top graphic are all solid pipes. In the bottom graphic, two of the solid pipes are displayed as centerlines.

The config.pro option PIPE_SOLID_ CENTERLINE must be set to Yes (the default) to display pipelines as Center Lines.

Figure 6–8

Solid pipe display

Centerline pipe display

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To toggle the display of solid pipelines to their centerline display, you can use either of the following techniques:

This option only affects the display; it does not affect the geometry of the model.

• Click Set Up > Set Display and select either the Solid and Center Line options. Once the display option is selected, you can select

any segment of a pipeline in the model and select .

• Select the icon from the toolbar to display the Pipe Tree. Expand the Unclassified-Group item. The Pipe Tree, listing all pipelines, appears similar to that shown Figure 6–41. Select the pipeline to be manipulated, press and hold the right mouse button and select Solid > Hide. The selected pipeline appears in centerline display.

You can also use the Piping Tree and the right mouse button to Delete selected solid pipelines in the model.

Figure 6–9

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6.5 Insert Point

When routing a pipeline, the Insert Point option enables you to insert points on an existing pipeline segment to define a bend in the pipeline. The top graphic in Figure 6–10 shows a pipeline that was originally created with only one 90° bend. The bottom graphic shows points that were added to create additional bends in the pipeline.

Figure 6–10

The points cannot be inserted on a Connect or Follow segment.

To insert a point in the pipeline, click Insert Point in the ROUTE PIPE menu and select the segment of pipeline that has a bend. The CHOOSE POINT menu appears with the options described in Table 6–2. These options enable you to select or create a point that can be used to define the bend.

This point was created to add a bend.

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Table 6–2

When creating dynamic point(s), you must first select the segment in which to insert the point(s) and then select the motion reference plane. The MOVE DRAG SEGMENT dialog box appears as shown in Figure 6–11.

Figure 6–11

This dialog box enables you to drag the point as necessary along the segment, normal to the segment, and normal to the plane. To complete the drag, select the top bar in the dialog box. After moving the pipe segment to the new location, you are prompted to define the dimension scheme to fully locate the new point. The point can be measured so that it is offset from a surface or coordinate system using cartesian, cylindrical, or spherical measurement schemes.

Option Description

Select This option enables you to select an existing static datum point as the reference for the bend.

Create This option enables you to create a new datum point as the reference for the bend.

Static This option enables you to create the new datum point using the standard datum point creation options.

Dynamic This option enables you to create the new datum point by dynamically dragging a segment to a new location.

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Exercise 6a Pipeline Manipulation

In this exercise, you work with an existing piping assembly and make changes to it using the modification options discussed in this chapter. When creating pipelines, it is always important to consider your design intent. By understanding possible upcoming changes to your requirements, you can build intelligence into your piping design so that when changes are made to components or their placements, the pipelines update accordingly. This prevents you from having to modify the pipelines.

Goal After you complete this exercise, you will be able to:

Modify pipelines

Task 1: Open the assembly called hydraulic_unit.asm.

1. Set the working directory to the Modify_pipe directory.

2. Open hydraulic_unit.asm.

3. Enable the Piping application.

Task 2: Obtain information about pipelines in the assembly.

1. Click Info from the PIPING menu and select the pipe shown in Figure 6–12. The Report Pipeline dialog box appears, as shown in Figure 6–13.

Figure 6–12

Select this pipeline to obtain information on it.

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Figure 6–13

2. Note that this pipeline is called ACCUMULATOR. Scroll through the results section. The current Line Stock is HYD_15. Select the

icon to view the information in a larger Information Window. Close the Information window.

3. Select the icon to close the Report Pipeline dialog box.

It is recommended that you store the .cfg file in a single directory for easy access.

4. Read in the piping.cfg Model Tree configuration file. You will need to browse to the Adv_Routing directory to locate the piping.cfg file.

5. Use the Model Tree Items dialog box to display Pipe Line features in the model tree, Figure 6–14. Note the length of the ACCUMULATOR pipeline.

Figure 6–14

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6. Zoom in on the assembly, as shown in Figure 6–15. Obtain information on the intersecting pipeline to determine its name.

The Accumulator pipeline intersects the Intake pipeline.

Figure 6–15

Task 3: Modify the Accumulator pipeline to resolve the intersection.

1. Click Modify Dim and select the Accumulator pipeline, as shown in Figure 6–16.

Figure 6–16

DesignConsiderations

Because of the way that the Accumulator pipeline was routed, you can simply modify the offset value to resolve the intersection.

2. Modify the 3.5 value to [2.0].

3. Select the icon to update the assembly. Verify that there is no intersection between the Accumulator and Intake pipelines.

4. Note that the Pipe Length parameter value for the Accumulator pipeline has been updated in the model tree.

Intersecting pipelines

Modify this pipeline.

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Task 4: Set the display of a pipeline.

1. Click Setup > Set Display > Center Line.

2. Select the Pressure pipeline, as shown in Figure 6–17.

Figure 6–17

3. Select and click Done/Return > Done/Return. The centerline is now visible.


In the upcoming steps, the Pressure pipeline will be rerouted so that it meets a required configuration change to its routed shape. Prior to rerouting, the solid pipeline was temporarily changed to display only its centerline in order to give you a better visualization of the change.

4. Click Route and select the Pressure pipeline.

5. Click Redefine and select the segment, as shown in Figure 6–18.

Figure 6–18

Pressure pipeline

Select this segment.PR

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When the Set Angle option is selected, the Set Ends option is automatically selected.

6. Click Set Angle > Done.

7. Click Next until the end of the pipeline closest to the clamp is selected. Click Accept and drag it. Press the left mouse button to complete the drag.

8. Click Ext Length and enter [1.75] as the extension value.

9. Click 60 as the new value for the angle.

10. Click Done Connect > Done/Return. You have just redefined the route of the Pressure pipeline.

11. As an alternative to using the Setup > Set Display option, select the Pressure pipeline in the model tree, press the right mouse button and click Solid > Show.

12. Select the icon to update the solid pipeline. The pipeline appears as shown in Figure 6–19.

Figure 6–19

Task 5: Modify the dimensions of a pipeline.

1. Click Modify Dim and select the segment of the Pressure pipeline that you just redefined (Figure 6–19).

2. Modify the extension length value from 1.75 to [2.0].

3. Modify the 60° value to [80].

4. Regenerate the assembly. The pipeline appears as shown in Figure 6–20.

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Figure 6–20

Task 6: Modify the bend radius of a pipeline.

1. Click Modify Pipe > Corner Type and select the corner shown

in Figure 6–21. Select .

Figure 6–21

2. Select 3.000 as the new bend radius from the Bend Radius pull-down menu.

3. Select the icon to complete the modification. The pipeline regenerates automatically.

You can also change the bend radius using the Modify Dim option.

4. Modify the bend radius to [3.0] for all five corners in the Return pipeline. To select multiple corners at one time, press and hold the <Ctrl> key as you make your selections. The pipeline appears, as shown in Figure 6–22.

Modify this corner.

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Figure 6–22

Task 7: Modify the bend of the Pressure pipeline to a square miter.


To determine which Line Stock is assigned to a pipeline, click Info and select the pipeline. The assigned pipeline appears in the Results section. To change a corner to a miter, the Line Stock that was originally assigned must be set to enable you to create mitered corners. Currently the HYD_1 Line Stock does not allow this.

1. Click Set Up > Line Stock > Edit and select HYD_1.

2. Select Miter Cut in the Corner Type section of the Line Stock dialog box.

3. Select the icon.

4. Click Modify Pipe and select the bend of the Pressure pipeline

shown in Figure 6–23. Select .

Return pipeline

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Figure 6–23

5. Select Miter Cut from the New Type pull-down menu.

6. Select the icon to complete the modification.

7. The pipeline appears as shown in Figure 6–24.

Figure 6–24

Modify this corner.P

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Task 8: Replace members of a family table.

1. Zoom in on the clamp at the top of the tank, as shown in Figure 6–25. The clamp is too large for the pipe.

Figure 6–25

The OD is 1.5, therefore the CLAMP_15 instance should be used.

2. Measure the outside diameter of the pipe.

3. Select the clamp. Press and hold the right mouse button and click Replace. The Replace Comp dialog box appears.

Figure 6–26

4. Click Family Table and select the icon.

5. Select CLAMP_15 as the component for the 1.5 diameter pipe.

The clamp is too large for the pipe.

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6. Select . The clamp is replaced with the new instance.

7. Review the model to ensure that the proper size clamp was used.

Task 9: Create the Motor_A pipeline.

1. Read in the HYD_100 Line Stock from the Line_Stocks directory.

2. Create a new pipeline called [motor_a].

3. Select HYD_100 as the Line Stock.

4. Set A_PORT on the Manifold as the entry port, as shown in Figure 6–27.

5. Extend the pipe segment using an extension length of [9.75].

Select the icon.

6. Click To Pnt/Port and select the MOTOR_A coordinate system in the Motor, as shown in Figure 6–27.

Figure 6–27

Vertical edge reference

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7. The resulting pipeline is not desired. Click Delete Last to delete the last segment.

8. Click Extend and select Axis/Edge/Segment from the New Type pull-down menu. Select a vertical edge on the Manifold, as shown in Figure 6–27.

9. Select Length from the Options pull-down menu and enter [14].

Select the icon.

10. Click To Pnt/Port and select the MOTOR_A coordinate system to close the pipeline.

11. Click Done/Return to complete the pipeline.


Reorient to the saved FRONT view. Notice that the upper segment of the MOTOR_A pipeline is not horizontal, as shown in Figure 6–28. This is a design requirement for this piping system.

Figure 6–28

12. Measure the relative distance between the coordinate systems MOTOR_A and A_PORT so that this pipeline can be created with the correct values. Click Analysis > Measure > Transform and select both the A_Port and Motor_A coordinate systems. The result is the transformation matrix shown in Figure 6–29.

Non-Horizontal segment

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Figure 6–29

13. Note the values and close the Measure dialog box.

Task 10: Delete unwanted segments and route the Motor_A pipeline using the values from the transformation matrix.

1. Click Route and select the MOTOR_A pipeline.

As an alternative, you could have used the Modify Dim option to modify the extension length from 14 to [16].

2. Click Delete Last twice to delete the last two segments in the pipeline.

3. Click Extend and select Axis/Edge/Segment from the New Type pull-down menu. Select the same vertical edge on the Manifold.

4. Select Length from the Options pull-down menu and enter [16]. This represents the Y value that was measured.

5. Select the icon.

6. Click To Pnt/Port and select the MOTOR_A coordinate system to close the pipeline.

7. Click Done/Return to complete the pipeline.

8. Reorient to the saved FRONT view. The pipeline is now horizontal, as shown in Figure 6–30.

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Figure 6–30

9. Save the model.

Task 11: Modify components.

1. Click Modify Dim from the Piping menu and select the motor_bracket.prt.

Figure 6–31

2. Modify the 20.0 value to [30.0] and regenerate the assembly.

Horizontal segment

Select motor_bracket.

Modify to [30].

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Did the pipe update to the current configuration so that the pipeline segment into the Motor_A entry port remains horizontal? The pipe did not update due to the use of extend values.

3. Modify the motor_bracket back to the original value of [20.0].

4. Redefine the motor_A pipeline and delete the three segments that make up the pipeline.

5. Create the pipeline using the Connect option.

6. Modify the motor_bracket back to a value of [30.0] and regenerate. Notice that the resulting geometry of the motor_A pipeline is now required. It is always important to consider design possibilities and use the appropriate routing technique to meet these requirements.

7. Create a new pipeline called [motor_b] using HYD_100 Line Stock.

8. Use the Connect routing option to route a pipeline between the B_Port and Motor_B ports, as shown in Figure 6–32.

Figure 6–32

Motor_B pipeline

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Task 12: Create solid pipes for the hydraulic_unit piping system.

1. Create solid pipes for the two pipelines that you created in this exercise. The model appears as shown in Figure 6–33.

Figure 6–33

2. Save the model and erase all files from memory.

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Exercise 6b Insert Point

In this exercise, you add a reducer to a pipeline to accomodate for the difference between two port sizes. You will then reroute a pipeline by inserting points.

Goal After you complete this exercise, you will be able to:

Add a reducerReroute a pipeline by inserting a point

Task 1: Open the assembly called insert.asm.

1. Open insert.asm and activate the piping application. The assembly appears as shown in Figure 6–34.

2. Use Info to determine which Line Stock was used for the pipeline indicated in Figure 6–34.

Figure 6–34

Obtain information on this pipeline.

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Line Stock HYD_100 has a 1 inch O.D.

3. Measure the inside diameter of the port shown in Figure 6–35.

Figure 6–35

4. Measure the Inside Diameter of the port shown in Figure 6–36.

Figure 6–36


Because the ID of the start and end ports is different, a reducer fitting must be added to the pipeline to accommodate the two different port sizes.

5. Insert a fitting called REDUCER.PRT at the location shown in Figure 6–37 using the Straight Brk option. Define the placement as Length Ratio with a value of [0.45].

Measure the ID of this port.

Measure the ID of this port.

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Figure 6–37

6. Orient the reducer as shown in Figure 6–38.

Figure 6–38


When a reducer is inserted, the pipeline is automatically broken at the insertion point. This enables you to modify the Line Stock for the two segments. In the next few tasks, you change the Line Stock for one of the segments. Remember that the Line Stock must be read into the piping assembly to be selected.

Insert the reducer here.

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7. Use Modify Pipe to change the Line Stock of the 0.5 inch side of the reducer. Refer to Figure 6–39.

Figure 6–39

8. Change the Line Stock to HYD_050.

9. Make the two pipelines solid. Note the different sizes of solid pipe on either side of the reducer fitting.

Figure 6–40

10. Save the model.

Task 2: Resume a suppressed component.

1. Use the Model Tree Items dialog box and enable the option to display Suppressed Objects.

Change the Line Stock of this segment.

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2. Select in the model tree, press the right mouse button and click Resume. Note the interference of the Insert pipe and the resumed manifold component.

Task 3: Change pipeline display.

1. Select the icon to display the Pipe Tree. Expand the Unclassified-Group item. The Pipe Tree appears as shown in Figure 6–41.

Figure 6–41

You can also use the Piping Tree and the right mouse button to Show selected pipelines in the model.

2. Select the Insert pipeline, press the right mouse button and select Solid > Hide. The Insert pipeline appears in centerline display. Pipeline display can also be changed by clicking Set up > Set Display from the Menu Manager.

Task 4: Reroute the Insert pipeline by inserting two points.

1. Click Route from the PIPING menu and select the Insert pipeline, as shown in Figure 6–42.

Figure 6–42

Select this segment for the 1st insert point.

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2. Click Insert Point and select the segment, as shown in Figure 6–42. Click Create > Static > Done and select the surface of the manifold, as shown in Figure 6–43. Select the On option in the References section and select Offset from the pull-down menu. Enter an offset value of [2.0].

Figure 6–43

3. Select in the Offset references section of the dialog box with the left mouse button to activate it. Select Edge in the Filter list in the bottom right-hand corner of the main window. Select the Top edge and the Front edge as shown in Figure 6–43. Enter [3] and [0] respectively as the offset values. The DATUM POINT dialog

box appears as shown in Figure 6–44. Select .

Figure 6–44

Offset surface

Back edgeTop edge

Front edge

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4. For this first inserted point, the system requires you to define the references that were used one more time. Click Offset Surf and read the message window for the required selections. Select the offset surface first and then select the two edges. You are not required to enter values because the system uses the values for the defined point.

5. Create a second insert point on the segment shown in Figure 6–45. Create the point offset from the same surface as the previous point and select the Top edge and the Back edge, as shown in Figure 6–43. Enter [3] and [0] as the respective

values. Enter an offset value of [2.0] and select .

Figure 6–45

Select this segment for the 2nd insert point.

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6. Change the view to saved view TOP. The model appears as shown in Figure 6–46.

Figure 6–46

7. Zoom in on the view shown in Figure 6–47. Note the incorrect routing that results from the modification.

Figure 6–47PR

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8. Create an insert point to correct this problem. Insert a static point offset from the coordinate system and normal to front surface. To select both of these references to define the point, press and hold the <Ctrl> key as you select them. Select the coordinate system and surface, as shown in Figure 6–48.

Figure 6–48

9. Enter an offset value of [2.0] and select , as shown in Figure 6–49.

Figure 6–49

Select CS2.

Front surface.

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10. Use the Piping Tree to display the Insert pipe as a solid and regenerate the model. The model appears as shown in Figure 6–50.

Figure 6–50

11. Save the model.

12. Close all Pro/ENGINEER windows and erase all files from memory.

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proe manipulating pipelines

Documents

saved front

hyd100 line

motora coordinate

modify dim

left mouse

click modify

create solid

modify pipe