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Batch and Jobshop Production

Batch and Jobshop Production
Production systems can be classified as Job-shop, Batch, Mass and Continuous production systems. Here we will explain about Batch and Jobshop production systems, their benefits and limitations. Batch Production What is batch production? A manufacturing process in which components or goods are produced in groups (batches) and not in a continuous stream. Characteristics: 1. Shorter production runs. 2. Plant and machinery are flexible. 3. Plant and machinery set up is used for the production of item in a batch and change of set up is required for processing the next batch. 4. Manufacturing lead-time and cost are lower as compared to job order production. Benefits 1. Better utilisation of plant and machinery. 2. Promotes functional specialisation. 3. Cost per unit is lower as compared to job order production. 4. Lower investment in plant and machinery. 5. Flexibility to accommodate and process number of products. 6. Job satisfaction exists for operators. Limitations 1. Material handling is complex because of irregular and longer flows. 2. Production planning and control is complex. 3. Work in process inventory is higher compared to continuous production. 4. Higher set up costs due to frequent changes in set up. Job Shop Production What is job-shop production? A job shop is a type of manufacturing process in which small batches of a variety of custom products are made. In the job shop process flow, most of the products produced require a unique set-up and sequencing of process steps. Job shops are usually businesses that perform custom parts manufacturing for other businesses. However, examples of job shops include a wide range of businesses—a machine tool shop, a machining center, a paint shop, a commercial printing shop, and other manufacturers that make custom products in small lot sizes. These businesses deal in customization and relatively small production runs, not volume and standardization. This is a custom made furniture design! Characteristics: 1. High variety of products and low volume. 2. Use of general purpose machines and facilities. 3. Highly skilled operators who can take up each job as a challenge because of uniqueness. 4. Large inventory of materials, tools, parts. 5. Exhaustive planning is essential for sequencing the requirements of each product, capacities for each work centre and order priorities. Benefits 1. Because of general purpose machines and facilities variety of products can be produced. 2. Operators will become more skilled and competent, as each job gives them learning opportunities. 3. Full potential of operators can be utilised. 4. Opportunity exists for Creative methods and innovative ideas. Limitations 1. Higher cost due to frequent set up changes. 2. Higher level of inventory at all levels and hence higher inventory cost. 3. Production planning is complicated. 4. Larger space...
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Types of Production Systems -I

Types of Production Systems -I
Types of Production Systems -I Continuous Production What is continuous production? The manufacture of products requiring the sequential performance of different processes on a series of multiple machines receiving the material for manufacture through a closed channel. For example, continuous production is generally conducted in the paper and chemical business. Characteristics 1. Dedicated plant and equipment with zero flexibility. 2. Material handling is fully automated. 3. Process follows a fixed sequence of operations. 4. Component materials cannot be readily identified with final product. 5. Planning and scheduling is a routine action. Technical Web Testing 101- Introducing the tools, techniques and thought processes that help you become more technical, and test more thoroughly. Benefits 1. Standardisation of product and process sequence. 2. Higher rate of production with decreased cycle time. 3. Higher capacity utilisation due to line balancing. 4. Manpower is not required for material handling as it is completely automatic. 5. Person with limited skills can be used on the production line. 6. Unit cost is lower due to high volume of production. Limitations 1. Flexibility to accommodate and process number of products does not exist. 2. Very high investment for setting flow lines. 3. Product differentiation is limited. Mass Production What is mass production? The manufacture of a product on a large scale. The mass production of items is often done by using an assembly line, or another efficient means of production. The process is often carefully determined, to try to produce the greatest quantity of items while using the fewest resources (such as labor and/or time). Mass production has become popular since the assembly line became prominent in the 1900s, although the process embodies principles of efficiency that have been around much longer. Characteristics: 1. Standardisation of product and process sequence. 2. Dedicated special purpose machines having higher production capacities and output rates. 3. Large volume of products. 4. Shorter cycle time of production. 5. Lower in process inventory. 6. Perfectly balanced production lines. 7. Flow of materials, components and parts is continuous and without any back tracking. 8. Production planning and control is easy. 9. Material handling can be completely automatic. Benefits 1. Higher rate of production with reduced cycle time. 2. Higher capacity utilisation due to line balancing. 3. Less skilled operators are required. 4. Low process inventory. 5. Manufacturing cost per unit is low. Limitations Following are the limitations of Mass Production: 1. Breakdown of one machine will stop an entire production line. 2. Line layout needs major change with the changes in the product design. 3. High investment in production facilities. 4. The cycle time is determined by the slowest...
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