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 A skill is the learned ability to act with determined results with good execution often within a given amount of time, energy, or both. Skills can often be divided into domain-general and domain-specific skills. For example, in the domain of wo ...

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 Job-shop scheduling, the job-shop problem (JSP) or job-shop scheduling problem (JSSP) is an optimization problem in computer science and operations research. It is a variant of optimal job scheduling. In a general job scheduling problem, we are giv ...

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 p ...

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 plas ...

, 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 Grind is the cross-sectional shape of a blade. Grind, grinds, or grinding may also refer to: Grinding action * Grinding (abrasive cutting), a method of crafting * Grinding (dance), suggestive club dancing * Grinding (video gaming), repetitive and ...

, honing, jig-boring,

gear manufacturing Gear manufacturing refers to the making of gears. Gears can be manufactured by a variety of processes, including casting, forging, extrusion, powder metallurgy, and blanking. As a general rule, however, machining is applied to achieve the final dim ...

, 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.

External links

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

Advantages

Disadvantages

See also

Further reading

External links