Search results
Results from the WOW.Com Content Network
A job shop is a manufacturing system that handles custom/bespoke or semi-custom/bespoke manufacturing processes, such as small to medium-size customer orders or batch jobs. Such a process is called "job production." Job shops typically move on to different jobs (possibly with different customers) when each job is completed.
A company's place on the matrix depends on two dimensions – the process structure/process lifecycle and the product structure/product lifecycles. [1] The process structure/process lifecycle is composed of the process choice (job shop, batch, assembly line, and continuous flow) and the process structure (jumbled flow, disconnected line flow, connected line flow and continuous flow). [1]
Job production can be classical craft production by small firms (making railings for a specific house, building/repairing a computer for a specific customer, making flower arrangements for a specific wedding etc.), but large firms use job production, too, and the products of job production are often interchangeable, such as machined parts made ...
Batch production is the method used to produce or process any product of the groups or batches where the products in the batch go through the whole production process together. An example would be when a bakery produces each different type of bread separately and each product (in this case, bread) is not produced continuously.
A first possible distinction in production systems (technological classification) is between continuous process production and discrete part production (manufacturing). Process production means that the product undergoes physical-chemical transformations and lacks assembly operations, and therefore the original raw materials cannot easily be ...
Machines can have duplicates (flexible job shop with duplicate machines) or belong to groups of identical machines (flexible job shop). [3] Machines can require a certain gap between jobs or no idle-time. Machines can have sequence-dependent setups. Objective function can be to minimize the makespan, the L p norm, tardiness, maximum lateness ...
The Shifting Bottleneck Heuristic is a procedure intended to minimize the time it takes to do work, or specifically, the makespan in a job shop.The makespan is defined as the amount of time, from start to finish, to complete a set of multi-machine jobs where machine order is pre-set for each job.
All jobs must be processed in the first work center before going through the second work center. All jobs are equally prioritised. Johnson's rule is as follows: List the jobs and their times at each work center. Select the job with the shortest activity time. If that activity time is for the first work center, then schedule the job first.