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Hello Team,
In Process manufacturing (OPM) ERP often uses a 'recipe', 'formula', 'process steps' or other definition instead of a BoM. IT allows for ingredient attributes and substitutions - which in this case could be used to define subsets of material B with different consumptions and processing times. There are many discreet manufacturing ERP packages that modify the basic BOM structure to enable a sort of process manufacturing to take place, some more effective than others. Mostly, when you see "BOM" used, know that you're likely dealing with a discreet ERP software - and if the workaround fits, that's fine - but you may want to look at true process manufacturing software. You can use configurators if you find one that fits - but a lot of your issues won't become apparent until you get upstream in the planning areas and try to determine what's being made with which raw inventory items you have on hand (or on order) and production times etc.
Regards,
Saiyid
A bill of materials or product structure (sometimes bill of material, BOM or associated list) is a list of the raw materials, sub-assemblies, intermediate assemblies, sub-components, parts and the quantities of each needed to manufacture an end product. A BOM may be used for communication between manufacturing partners, or confined to a single manufacturing plant. A bill of materials is often tied to a production order whose issuance may generate reservations for components in the bill of materials that are in stock and requisitions for components that are not in stock.
A BOM can define products as they are designed (engineering bill of materials), as they are ordered (sales bill of materials), as they are built (manufacturing bill of materials), or as they are maintained (service bill of materials or pseudo bill of material). The different types of BOMs depend on the business need and use for which they are intended. In process industries, the BOM is also known as the formula, recipe, or ingredients list. The phrase "bill of material" (or BOM) is frequently used by engineers as an adjective to refer not to the literal bill, but to the current production configuration of a product, to distinguish it from modified or improved versions under study or in test.
In electronics, the BOM represents the list of components used on the printed wiring board or printed circuit board. Once the design of the circuit is completed, the BOM list is passed on to the PCB layout engineer as well as component engineer who will procure the components required for the design.
BOMs are of hierarchical nature, with the top level representing the finished product which may be a sub-assembly or a completed item. BOMs that describe the sub-assemblies are referred to as modular BOMs. An example of this is the NAAMS BOM that is used in the automotive industry to list all the components in an assembly line. The structure of the NAAMS BOM is System, Line, Tool, Unit and Detail.
The first hierarchical databases were developed for automating bills of materials for manufacturing organizations in the early 1960s. At present, this BOM is used as a data base to identify the many parts and their codes in automobile manufacturing companies.
A bill of materials "implosion" links component pieces to a major assembly, while a bill of materials "explosion" breaks apart each assembly or sub-assembly into its component parts.
A modular BOM can be displayed in the following formats:
A BOM can also be visually represented by a product structure tree, although they are rarely used in the workplace.[2] For example, one of them is Time-Phased Product Structure [3] where this diagram illustrates the time needed to build or acquire the needed components to assemble the final product. For each product, the time phased product structure shows the sequence and duration of each operation.
A configurable bill of materials (CBOM) is a form of BOM used by industries that have multiple options and highly configurable products (e.g. telecom systems, data-center hardware (SANS, servers, etc.), PCs, autos).[4]
The CBOM is used to dynamically create "end-items" that a company sells. The benefit of using CBOM structure is that it reduces the work-effort needed to maintain product structures. The configurable BOM is most frequently driven by "configurator" software, however it can be enabled manually (manual maintenance is infrequent because it is unwieldy to manage the number of permutations and combinations of possible configurations). The development of the CBOM is dependent on having a modular BOM structure in place. The modular BOM structure provides the assemblies/sub-systems that can be selected to "configure" an end-item.
While most configurators utilize top-down hierarchical rules syntax to find appropriate modular BOMs, maintenance of very similar BOMs (i.e., only one component is different for various voltages) becomes highly excessive. A newer approach, (Bottom-Up/Rules-Based Structuring) utilizing a proprietary search engine scheme transversing through selectable componentry at high speeds eliminates the Planning Modular BOM duplications[citation needed]. The search engine is also used for all combinatorial feature constraints and GUI representations to support specification selections.
To decide which variant of the parts or components are to be chosen, they are attributed by the product options which are the characteristic features of the product (business). If the options of the product build an ideal boolean algebra,[5] it is possible to describe the connection between parts and product variA Multi-Level Bill of Materials (BOM), or referred as an indented BOM, is a bill of materials that lists the components, assemblies, and parts required to make a product. It provides a display of all items that are in parent-children relationships. When an item is a sub-component, unfinished part, etc., all of its components, including finished parts and raw materials, are also exhibited. A multi-level structure can be illustrated by a tree with several levels. In contrast, a single-level structure only consists of one level of children in components, assemblies and material.ants with an boolean expression, which refers to a subset of the set of products.[6]
A bill of materials (BOM) is a comprehensive list of raw materials, components and assemblies required to build or manufacture a product. A bill of materials (BOM) is usually in a hierarchical format, with the topmost level showing the end product, and the bottom level displaying individual components and materials.
Fashion and textile industry have found an easy solutions to this very common problem.
Typically a finished product code is composed of the following parts or specifications:
- the model code
- the material (main fabric)
- the finishing color
- (other spec’s are optional in case of customizations)
A general item can be codified in two way:
1) Model+Material+Color (e.g. product 0123.4567.89)
2) Univocal Item ( e.g. product 1234567)
In conformity to the above code structure, BOM can be defined in one of the following system:
a) “Neutral” BOM + Table of compositions
with this method a generic BOM is defined for each Model, considering the geometry not affected by materials and colors. Therefore all references described under the BOM are “neutral” with a standardized consumption (quantity form factor #1).
Each “Neutral BOM” is joined to a specific “Table of components” containing a
list of all materials available to orders, with a relative consumption factor (quantity material factor #2)
A second table is defined to establish rules for coloring each components
(in relation with each material) showed in the neutral BOM
When the customer order (or manufacturing order) is planned and processed
by ERP system the software automatically generate a new BOM (Specific BOM) for each combination of Model+Material+Color
For each specific “model+materials” the actual consumption is defined by the
product of : (qty factor1*qty factor2)
b) “Specific” BOM
This method define a single unique BOM for each combinations. None table of
materials is defined or joined.
Method A) of “neutral bom” is adopted in case of models which are more standardized, stable during seasons and with classic collections;
Method B) of “Specific bom” is preferably adopted in case of fashion collection
more sensitive to seasons variations.
Based on market fundamentals, Standard ERP Systems adopt for MRP, one (or both) of the above methods.
agree with all expert answers above
Thanks for the invite, I agree with the previous answer.
A bill of materials (BOM) is a comprehensive list of raw materials, components and assemblies required to build or manufacture a product. A bill of materials (BOM) is usually in a hierarchical format, with the topmost level showing the end product, and the bottom level displaying individual components and materials.
Bills of materials come in different types specific to engineering (used in the design process), manufacturing (used in the manufacturing process), and so on. A manufacturing BOM is of vital importance in materials requirement planning (MRP) and enterprise resource planning (ERP) systems. A BOM "explosion" displays an assembly or sub-assembly broken down into its individual components and parts, while a BOM "implosion" displays the linkage of individual parts to an assembly.
