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sub-component, of a (parent) component, it can in-turn have its own child components, and so on. The resulting top-level BOM (item number) would include children; a mix of finished sub-assemblies, various parts and raw materials. 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.
33:
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A multi-level bill of materials (BOM), referred to as an indented BOM, is a bill of materials that lists the assemblies, components, and parts required to make a product in a parent-child, top-down method. It provides a display of all items that are in parent-children relationships. When an item is a
202:
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
194:
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
217:
Parts which will not be assembled at all in one or more variants are typically marked as "DNP" (for "do not populate" or "do not place") in the affected variants. Other less frequently used designators for this include "NP" ("no placement", "not placed"), "NF" ("no fit", "not fitting"), "DNM" ("do
153:
Sometimes the term "pseudo-bill of materials" or "pseudo-BOM" is used to refer to a more flexible or simplified version. Often a place-holder part number is used to represent a group of related (usually standard) parts that have common attributes and are interchangeable in the context of this BOM.
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and attributes in addition to a more flexible system based on parentheses notation stored as prefixes to part values defining multi-level logical conditions and dependencies of assembly groups and possible alternative part values. Originally devised by the author as an easy-to-understand symbolic
79:
A BOM can also be visually represented by a product structure tree, although they are rarely used in the workplace. For example, one of them is Time-Phased
Product Structure where this diagram illustrates the time needed to build or acquire the needed components to assemble the final product. For
203:
search engine scheme transversing through selectable componentry at high speeds eliminates the planning modular BOM duplications. The search engine is also used for all combinatorial feature constraints and GUI representations to support specification selections.
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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.
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96:. 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.
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A single-level BOM (or unit list) that displays the assembly or sub-assembly with only one level of children. Thus it displays the components directly needed to make the assembly or sub-assembly.
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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
218:
not mount"), "NM" ("not mounted"), "NU" ("not used"), "DNI" ("do not install", "do not insert"), "DNE" ("do not equip"), "DNA" ("do not assemble"), "DNS" ("do not stuff"), "NOFIT" etc.
195:
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
171:
A single-level BOM resolved to list the effectively needed quantities of components to produce a product (rather than to list each individual part by its logical name) is also called
99:
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.
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Frischen, Christian; Marbach, Anastasia; Tichla, Florian; Mantwill, Frank (2019-09-18). Written at
Hamburg, Germany. Krause, Dieter; Paetzold, Kristin; Wartzack, Sandro (eds.).
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An indented BOM (or structural parts list) that displays the highest-level item closest to the left margin and the components used in that item indented more to the right.
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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.
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To decide which assembly variant of the parts or components is to be chosen, they are attributed by the product options which are the characteristic features of the
538:"Eine durch den Nutzer erweiterbare Klammer-Präfix-Notation zur flexiblen Definition und Verwaltung von Bestückungsvarianten durch Auflösung logischer Bedingungen"
92:, 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
214:, it is possible to describe the connection between parts and product variants with a Boolean expression, which refers to a subset of the set of products.
72:
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.
68:. 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
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150:), or as they are maintained (service bill of materials). The different types depend on the business need and use for which they are intended.
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of the raw materials, sub-assemblies, intermediate assemblies, sub-components, parts, and the quantities of each needed to manufacture an
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added support for variants and attributes to EAGLE, it was later integrated into the author's BOM tool for automatic variant management.)
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structure in place. The modular BOM structure provides the assemblies/sub-systems that can be selected to "configure" an end-item.
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592:. DfX (in German and English). Jesteburg, Germany: Mechanical Engineering & Computer-assisted Product Development,
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496:]. Fortschritt-Berichte VDI, Reihe 16: Technik und Wirtschaft (in German). Vol. 52. DĂĽsseldorf, Germany:
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layout engineer as well as the component engineer who will procure the components required for the design.
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each product, the time-phased product structure shows the sequence and duration of each operation.
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PPS in automobile engineering – Production program planning and control of vehicles and assemblies
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PPS im
Automobilbau – Produktionsprogrammplanung und -steuerung von Fahrzeugen und Aggregaten
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Das kleine QM-Lexikon: Begriffe des Qualitätsmanagements aus GLP, GCP, GMP und EN ISO 9000
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Zur
Problematik der Abbildung variantenreicher Erzeugnisse in der Automobilindustrie
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187:(CBOM) is a form of BOM used by industries that have multiple options and highly
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A modular BOM (or variant parts list) can be displayed in the following formats:
586:"Durchgängige Variantensteuerung mit Hilfe der regelbasierten Komplexstückliste"
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191:(e.g. telecom systems, data-center hardware (SANS, servers, etc.), PCs, cars).
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497:
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On the problems of mapping high-variation products in the automobile industry
123:. The phrase "bill of material" (or "BOM") is frequently used by engineers
17:
241:
602:
571:
544:(Program documentation). 1.06 (also 1.09 as of 2013-03-04) (in German)
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146:), as they are ordered (sales bill of materials), as they are built (
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Variant
Management of Modular Product Families in the Market Phase
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notation assisting a user manually processing variant BOMs before
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648:(Thesis). Reihe 16: Technik und Wirtschaft. DĂĽsseldorf, Germany:
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DS 98: Proceedings of the 30th
Symposium Design for X (DFX 2019)
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Operations and
Production Systems with Multiple Objectives
36:
An example of a BOM for a mechanical assembly (in German)
635:
Avak, Björn (2007) . Written at Zürich, Switzerland.
565:5 to 7 with support for part databases and EAGLE's
271:) is commonly used in German-speaking countries.
142:A BOM can define products as they are designed (
210:. If the options of the product build an ideal
8:
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486:Herlyn, Wilmjakob Johannes (January 1990).
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295:Reid, R. Dan; Sanders, Nada R. (2002).
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258:
290:
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265:The abbreviation "NB" or "n.b." (for
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461:] (in German). Munich, Germany:
557:-based BOM management tool for the
453:Herlyn, Wilmjakob Johannes (2012).
25:
536:Paul, Matthias R. (2012-01-20) .
701:from the original on 2018-04-22
610:from the original on 2021-03-27
148:manufacturing bill of materials
111:, the BOM is also known as the
185:configurable bill of materials
1:
144:engineering bill of materials
382:Hochheimer, Norbert (2011).
173:quantity synopsis parts list
746:
594:Helmut-Schmidt-Universität
324:Malakooti, Behnam (2013).
237:Software bill of materials
27:List used in manufacturing
354:"pseudo bill of material"
658:10.3929/ethz-a-005320674
646:Fortschritt-Berichte VDI
730:Supply chain management
431:. 2012. Archived from
358:BusinessDictionary.com
267:
167:Modular (planning) BOM
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390:John Wiley & Sons
330:John Wiley & Sons
301:John Wiley & Sons
297:Operations Management
189:configurable products
35:
725:Production economics
303:. pp. 457–458.
674:20.500.11850/149674
247:Component placement
90:hierarchical nature
603:10.35199/dfx2019.2
463:Carl Hanser Verlag
109:process industries
38:
694:. ETH No. 16885.
567:assembly variants
516:978-3-18-145216-5
472:978-3-446-41370-2
339:978-1-118-58537-5
46:product structure
42:bill of materials
16:(Redirected from
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360:. Archived from
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179:Configurable BOM
121:ingredients list
70:production order
50:bill of material
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212:Boolean algebra
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88:BOMs are of
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29:
619:(12 pages)
526:(127 pages)
425:SAP ERP 6.0
421:"Super BOM"
410:(334 pages)
197:modular BOM
66:end product
48:(sometimes
18:Modular BOM
719:Categories
705:2018-04-22
650:VDI Verlag
614:2021-03-28
548:2012-02-05
521:2021-01-29
498:VDI Verlag
439:2012-07-17
405:2022-04-04
368:2018-04-17
279:References
692:0178-9597
666:0507-617X
596:: 13–24.
84:Structure
696:Archived
608:Archived
242:RKM code
231:See also
572:CadSoft
553:(NB. A
542:BOM-MPL
208:product
113:formula
60:) is a
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680:
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469:
396:
336:
307:
117:recipe
699:(PDF)
662:eISSN
642:(PDF)
563:EAGLE
561:tool
492:[
457:[
253:Notes
138:Types
119:, or
103:Usage
688:ISSN
678:ISBN
512:ISBN
502:ISBN
467:ISBN
394:ISBN
334:ISBN
305:ISBN
62:list
670:hdl
654:doi
598:doi
559:EDA
555:ULP
429:SAP
132:PCB
107:In
56:or
54:BOM
44:or
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287:^
183:A
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52:,
40:A
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20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
