Item numbers in assemblies


Item numbers for parts and subassemblies can be created and maintained automatically in an assembly model. Item numbers are based on the assembly structure, that is, the order in which parts, subassemblies, and assemblies are displayed in Assembly PathFinder.

Once created, you can use assembly item numbers in assembly reports, including pipe and tubing reports produced in XpresRoute, and structural frame design reports. The item numbers are saved with the assembly and are available for downstream use, for example, in PMI balloons placed on the model and in ballooned parts lists on an assembly drawing. This ensures consistent part numbering is propagated across all applications of the model.

Creating item numbers in assemblies

You can create item numbers in an assembly model by selecting the Maintain item numbers check box in the Item Numbers page (QY CAD Options dialog box). As new items are added to the assembly, new item numbers are created. If items are removed from the assembly, their item numbers are not available for reuse.

You can remove item numbers from the assembly by deselecting the Maintain item numbers check box.

Item number creation can be enabled and disabled at any time.

  • Item numbers can be generated as the assembly is built by enabling item number creation before items are added to the assembly.

  • In some cases, it may be better to enable item numbers after most of the assembly structure has been created.

Editing item numbers

You can edit item numbers in the model by selecting the top-level assembly occurrence in PathFinder and choosing the Occurrence Properties command. The Item Number column in the Occurrences Properties dialog box shows the assembly item numbers. You can:

  • Change existing item numbers.

  • Add missing item numbers using the Next Available Number command on the shortcut menu.

  • Use the Reset Item Numbers command on the shortcut menu to cancel your edits and restore the item numbers generated by the assembly structure.

Using assembly item numbers in reports

You can use the assembly-generated item numbers in assembly reports when you select the Use assembly generated items number check box in the assembly Report dialog box. The item numbers are shown when you select the Format button to open the Format Report dialog box or in the Report Output dialog box.

See the help topic, Create a report.

Using assembly item numbers in PMI balloons

You can display assembly item numbers in PMI balloons placed on the model.

When you select the PMI tab→Annotation group→Balloon command, you can use these options on the Balloon command bar to retrieve the item numbers from the assembly and display them in the balloon:

  • Item Number button

  • Item Count button

Using assembly item numbers on a drawing

On an assembly drawing, you can:

Item numbering schema

Use the Item Numbers page (QY CAD Options dialog box) to select an item numbering schema for the parts and subassemblies in the assembly model. Refer to the following table for a comparison of item numbering options.

Example:

The gray shaded cells below indicate the assembly structure, where A1 and A2 are subassemblies, and P1, P2, P3, P4, and P5 are parts.

The unshaded cells show how flat list item numbering is applied to the assembly structure.

The last column shows the level-based item number option, which is available only for Exploded - Top down item numbers.

Level 1

Level 2

Level 3

Top level only

Atomic -Top down

Exploded - Top down

Use level-based numbers

Top assembly

A1

1

1

1

P1

1

2

1.1

P2

2

3

1.2

A2

4

1.3

P3

3

5

1.3.1

P4

4

6

1.3.2

P6

5

7

1.4

P7

6

8

1.5

P2

2

2

3

2

P4

3

4

6

3

A2

4

4

4

P3

3

5

4.1

P4

4

6

4.2

P5

5

7

9

5

Formatting item numbers

You can format the item numbers shown in the assembly model by selecting the following options on the Item Numbers page (QY CAD Options dialog box):

  • Use level-based numbers

  • Start number

  • Increment by

Synchronizing Item Numbers with Teamcenter Find Numbers

In the Teamcenter-managed environment, the integration of QY CAD Item Numbers with Teamcenter Find Numbers is governed by the Teamcenter preference SEEC_Synchronize_ItemNumbers. This preference provides a single point for enabling and configuring Item Number options. When you enable SEEC_Synchronize_ItemNumbers the Item Numbers page in QY CAD Options is available for viewing only. Definitions are based on the values specified by the preference.

By enabling SEEC_Synchronize_ItemNumbers, you can construct a view in Structure Manager that is consistent with a draft's parts list. Synchronization is bi-directional. Existing structures that contain non-modeled items (virtual components) and associated occurrences cannot be reset. The item numbers are locked. However, when an Item Number is assigned either through reset or when placing a new occurrence, the numbers assigned do not conflict with numbers locked by virtual components.

There are a few important rules to be aware of:

  • Item Numbers are supported at the top level only.

  • Item Number ownership determines whether QY CAD or Teamcenter is responsible for Item Number generation. When /Master=Both, item numbers are generated in the application that created the new occurrence. When /Master=Tc, or /Master=Teamcenter, only Teamcenter can generate item numbers.

  • The Teamcenter preference, PS_new_seqno_mode, should be set to Existing when synchronizing QY CAD Item Numbers with Teamcenter Find Numbers. The value of this preference is displayed on the QY CAD Options→ Item Numbers page.

  • Any change to the Item Number options results in a reset.

  • Item Numbers assigned to non-modeled Item Revisions are considered locked or fixed. These BOM lines are not included in QY CAD Save.

  • QY CAD does not assign an Item Number that is currently assigned to non-modeled Item Revisions.

  • The reset command will not impact an Item Number that is currently assigned to a non-modeled revision.

  • Item Numbers must be unique by document link. If they are not unique, QY CAD keeps the lowest Item Number and assigns it to all occurrences of that link.

For details about preference options, see the Teamcenter Preferences section of the QY CAD Administrator's Guide.

Create reports Create and edit assembly item numbers

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