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Wikipedia

Job shop

Job shops are typically small manufacturing systems that handle job production, that is, custom/bespoke or semi-custom/bespoke manufacturing processes such as small to medium-size customer orders or batch jobs. Job shops typically move on to different jobs (possibly with different customers) when each job is completed. Job shops machines are aggregated in shops by the nature of skills and technological processes involved, each shop therefore may contain different machines, which gives this production system processing flexibility, since jobs are not necessarily constrained to a single machine. In computer science the problem of job shop scheduling is considered strongly NP-hard.

In a job shop, product flow is twisted.

A typical example would be a machine shop, which may make parts for local industrial machinery, farm machinery and implements, boats and ships, or even batches of specialized components for the aircraft industry. Other types of common job shops are grinding, honing, jig-boring, gear manufacturing, and fabrication shops.

The opposite would be continuous continuous-flow manufacturing, such as textile, steel, food manufacturing and manual labor.

Advantages

  • High flexibility in product engineering
  • High expansion flexibility (machines are easily added or substituted)
  • High production volume elasticity (due to small increments to productive capacity)
  • Low obsolescence (machines are typically multipurpose)
  • High robustness to machine failures

Compare to transfer line.

Disadvantages

  • Difficult scheduling due to high product variability and twisted production flow
  • Low capacity utilization

Compare to transfer line.

See also

Further reading

  • A. Portioli, A. Pozzetti, Progettazione dei sistemi produttivi, Hoepli 2003
  • N.A. Buzacott, G.E. Shanthikumar, Stochastic models of manufacturing systems, Prentice Hall, 1993

External links

  • Job Shop and CAD
  • Electrical Discharge Machining Job Shop

shop, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, this, article, includes, list, references, related, reading, external, links, sources, remain, unclear, because, l. This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help to improve this article by introducing more precise citations August 2018 Learn how and when to remove this template message This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Job shop news newspapers books scholar JSTOR August 2018 Learn how and when to remove this template message Learn how and when to remove this template message Job shops are typically small manufacturing systems that handle job production that is custom bespoke or semi custom bespoke manufacturing processes such as small to medium size customer orders or batch jobs Job shops typically move on to different jobs possibly with different customers when each job is completed Job shops machines are aggregated in shops by the nature of skills and technological processes involved each shop therefore may contain different machines which gives this production system processing flexibility since jobs are not necessarily constrained to a single machine In computer science the problem of job shop scheduling is considered strongly NP hard In a job shop product flow is twisted A typical example would be a machine shop which may make parts for local industrial machinery farm machinery and implements boats and ships or even batches of specialized components for the aircraft industry Other types of common job shops are grinding honing jig boring gear manufacturing and fabrication shops The opposite would be continuous continuous flow manufacturing such as textile steel food manufacturing and manual labor Contents 1 Advantages 2 Disadvantages 3 See also 4 Further reading 5 External linksAdvantages EditHigh flexibility in product engineering High expansion flexibility machines are easily added or substituted High production volume elasticity due to small increments to productive capacity Low obsolescence machines are typically multipurpose High robustness to machine failuresCompare to transfer line Disadvantages EditDifficult scheduling due to high product variability and twisted production flow Low capacity utilizationCompare to transfer line See also EditJob shop scheduling Production line WorkflowFurther reading EditA Portioli A Pozzetti Progettazione dei sistemi produttivi Hoepli 2003 N A Buzacott G E Shanthikumar Stochastic models of manufacturing systems Prentice Hall 1993External links EditJob Shop and CAD Electrical Discharge Machining Job Shop Retrieved from https en wikipedia org w index php title Job shop amp oldid 1072664909, wikipedia, wiki, book, books, library,

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