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 A process is a series or set of activities that interact to produce a result; it may occur once-only or be recurrent or periodic. Things called a process include: Business and management *Business process, activities that produce a specific se ...

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 computational complexity theory, NP-hardness ( non-deterministic polynomial-time hardness) is the defining property of a class of problems that are informally "at least as hard as the hardest problems in NP". A simple example of an NP-hard pr ...

A typical example would be a

machine shop A machine shop or engineering workshop (UK) is a room, building, or company where machining, a form of subtractive manufacturing, is done. In a machine shop, machinists use machine tools and cutting tools to make parts, usually of metal or plast ...

, 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 Fabrication may refer to: * Manufacturing, specifically the crafting of individual parts as a solo product or as part of a larger combined product. Processes in arts, crafts and manufacturing *Semiconductor device fabrication, the process used t ...

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 {{no footnotes, date=March 2013 A transfer line is a manufacturing system which consists of a predetermined sequence of machines connected by an automated material handling system and designed for working on a very small family of parts. Parts can b ...

Disadvantages

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

External links

Job Shop and CADElectrical Discharge Machining Job Shop
{{DEFAULTSORT:Job Shop Manufacturing

Advantages

Disadvantages

See also

Further reading

External links