About Manufacturing Assembly Creation and Update

The Create/Update Item Structure command provides a procedure for creating or updating a Manufacturing Assembly from a product structure. The Manufacturing Assembly is generated for a selected item from a product structure according to the selected options. The structure can also take customized Make-Buy considerations into account.

The following topics are discussed:

This page discusses:

See Also
Creating a Manufacturing Assembly in Advanced User Mode

Create and Update Modes of the Command

The Create Manufacturing Assembly command is enabled when the selected item is a leaf node. The Update Item Structure command is enabled when the selected item is a nonleaf node. A leaf node is a tree node with no children and a nonleaf node is a tree node with children.

The first step in the procedure is to associate a product with the selected item. If the selected item has a context link to a product, then that product is taken into account by the Create Manufacturing Assembly command. Otherwise you must select a product to create a context link between the product and the item.

If the Create Scope between the selected Product and Item option is selected, the scope is created between the selected product and item.

Notes:
  • If the selected item has an already existing "First Upper Scope" with a product, the user can use this option to edit the value of the setting.
  • If the selected item does not have a "First Upper Scope" with a product, this option is selected by default and disabled for the user.

The Update Item Structure command creates additional items according to the current product structure and selected options. Any already existing manufacturing subassembly that corresponds to the current product structure is not modified.

Command Options

A number of options are taken into account during the command execution. These options may be fixed and cannot be modified depending on the selected industry mode.

The second step in the procedure is to specify how the Manufacturing Assembly is to be generated.

When selecting the Advanced user (all options) mode in Me > Preferences > App Preferences > Simulation > Process Engineering > Fastened Item Definition > Items Management > Generation mode for industry, the options are presented in the following dialog box:

Generate Items structure based on Make-Buy
If this option is selected, extra analysis is carried out and Manufacturing Assembly generation is determined depending on:
Create complete Assembly for Design Assembly
If this option is selected, nonleaf product nodes are processed recursively.
The product leaf nodes have a corresponding Provided Parts or Fasten steps when conditions are met.

The third and final step in the procedure is to specify how the various items are to be generated.

When selecting the Advanced user (all options) mode in Me > Preferences > App Preferences > Simulation > Process Engineering > Fastened Item Definition > Items Management > Generation mode for industry, the options are presented in the following dialog box:

Generate Assembly for Design Assemblies
If this option is selected, a Manufacturing Assembly is created for the corresponding product node if this node is a nonleaf node.
Create Item-Product Scope for Assemblies
If this option is selected, a scope is created between the product and the item for each Manufacturing Assembly that is created.
Generate Provided Parts for Parts
If this option is selected, Provided Parts are generated for parts.
Copy Product Effectivity
If this option is selected, the product's effectivity is copied onto its implementing items on the leaf nodes.
Notes: If the product is not declared as Manufacturable/Procurable, the system does not take into account the product:
  • For a leaf product, no implementing item (generally a provided part) is created.
  • For an intermediate node, the system does not take into account the node and continues deeper in the structure.

Industry Modes

The selected industry mode has a great influence on how the Manufacturing Assembly is generated. The industry modes are Aerospace, Administrator, or Advanced user (all options).

Definition of the Industry Mode

You can specify the Generation mode for industry in Me > Preferences > App Preferences > Simulation > Process Engineering > Fastened Item Definition > Items Management > Generation mode for industry.

Working under the authority of an action
If this option is selected, it lets you manage a single level of the structure and define effectivities.
A single level of the structure is a reference with a variability space and its child instances only.

Advanced User Mode

In Advanced user (all options) mode, the options of the Create/Update Item Structure command are proposed in dialog boxes.

If the Generate Items structure based on Make-Buy option (step 2) is selected, item generation is as follows.

  • If the product is considered as Make:

    For non-leaf nodes, a Manufacturing Assembly is created and the scope creation is customizable based on the sCreateScope attribute value:

    • If the sCreateScope attribute value is set to Yes, the scope is created on the Manufacturing Assembly.
    • If the sCreateScope attribute value is set to No, the scope is not created.

    The non-leaf node's children are processed only if the Working under the authority of an action option is cleared.

  • If the product is considered as Buy:

    A Provided Part is created if the Generate Provided Parts for Parts option (step 3) is selected. The children of the product node are ignored.

  • If the product is considered as Undefined:

    For non-leaf nodes, nothing is created and the nonleaf node's children are processed only if the Create complete Assembly for Design Assembly option (step 2) is selected.

If the Generate Items structure based on Make-Buy option (step 2) is cleared, item generation is as follows.

  • For non-leaf nodes:
    • If the Generate Assemblies for Design Assemblies option (step 3) is selected, then a Manufacturing Assembly is created.
    • If the Create Item-Product Scope for Assemblies option (step 3) is selected, then a scope is also created.
    • If the Create complete Assembly for Design Assembly option (step 2) is selected, then its child nodes are processed.
  • For leaf nodes:

    If the Generate Provided Parts for Parts option is selected, then Provided Parts are created accordingly.

Administrator Mode

In Administrator mode, the Generate Items structure based on Make-Buy option is selected.

  • If the product is considered as Make:

    For non-leaf nodes, a Manufacturing Assembly is created and the scope creation is customizabled based on the sCreateScope attribute value:

    • If the sCreateScope attribute value is set to Yes, the scope is created on the Manufacturing Assembly.
    • If the sCreateScope attribute value is set to No, the scope is not created.

    The non-leaf node's children are processed only if the Working under the authority of an action option is cleared.

  • If the product is considered as Buy:

    No item is created and all the children of the product node are ignored.

  • If the product is considered as Undefined:

    No item is created. The non-leaf node's children are processed.

Note: The following options are overridden by the rules of the Administrator industry mode: Generate Assemblies for Design Assemblies, Generate Provided Parts for Parts, Create Item-Product Scope for Assemblies, and Create complete Assembly for Design Assembly.

Aerospace Mode

In Aerospace mode, the Generate Items structure based on Make-Buy option is selected by default.

  • If the product is considered as Make:

    For non-leaf nodes, a Manufacturing Assembly is created and the scope creation is customizable based on the sCreateScope attribute value:

    • If the sCreateScope attribute value is set to Yes, the scope is created on the Manufacturing Assembly.
    • If the sCreateScope attribute value is set to No, the scope is not created.

    Provided Parts are created for leaf nodes. The nonleaf node's children are processed only if the Working under the authority of an action option is cleared.

  • If the product is considered as Buy:

    A Provided Part is created and all the children of the product node are ignored.

  • If the product is considered as Undefined:

    No item is created for nonleaf nodes and no items are created for leaf nodes. The children are processed only in nonleaf nodes.

The Generate Single Provided Part Reference for Multiple Instantiated Parts option is active in Aerospace mode, so a Provided Part reference is created for multiple instantiated parts.

Note: The following options are overridden by the rules of the Aerospace industry mode: Generate Assemblies for Design Assemblies, Generate Provided Parts for Parts, Create Item-Product Scope for Assemblies, and Create complete Assembly for Design Assembly.

Make/Buy Management Using Business Logic

When a product or part is considered as either Make or Buy, the program can determine the item creation characteristics. The Make or Buy characteristics can be determined thanks to the dedicated DELMA_MakeOrBuyTesting business logic.

A MakeOrBuyTesting parameter is available in DELMA_MakeOrBuyTesting for Make or Buy processing. Processing can be applied on a product or part and the business rule looks for the required Make, Buy, or Undefined information located in the object. This information can be used when creating and updating Manufacturing Assemblies.

Parent Customization Using Business Logic

By default, the Create/Update Item Structure command assigns all products and parts under the selected product to its implementing item. The DELMA_ChooseParentInCUPS business logic enables you to choose the parent item based on attribute value.

The product instance to assign and the item instance you want to choose as parent must both have the same value for the Description attribute.

When you use the Create/Update Item Structure command, the DELMA_ChooseParentInCUPS business logic is executed with the following steps:

  1. The business logic retrieves the implementing item of the selected product.
  2. From the implementing item, the business logic moves upward in the PPR tree, while remaining under the first upper-scoped item, until it encounters an item with the same attribute value as the product.
  3. This item is chosen as parent, under which the Create/Update Item Structure command creates, or repositions items.
Important: To ensure that fasteners are repositioned correctly, clear the following options in Me > Preferences > App Preferences > Simulation > Process Engineering > Fastened Item Definition > Fastened Items > Fastener management:
  • Automatically Assign and Re-assign Fasteners
  • Use Same Fasten Step reference to Implement Fasteners having same diameter, type, and set of joined parts

In the example below:

  • The selected product Product10692 is implemented by the item Product10692.
  • From the implementing item Product10692, the first upper-scoped item is Product10683-ImportedAsNew 6930.
  • The item Product10686-ImportedAsNew 6930 is under the first upper-scoped item, and has the same value for the Definition attribute as the selected product


The Create/Update Item Structure executes the business logic. It moves upward the tree from the implementing item Product10692, while remaining under the first upper-scoped item. The item Product10686-ImportedAsNew 6930 is the first encountered object with the same attribute value as the selected product.

As a result, Product10686-ImportedAsNew 6930 is chosen as parent for the implementing item Product10692. The MBOM structure is updated.