03 LAYOUT TYPES Dosen : Much Djunaidi Presentasi Kuliah TKI-313 Sistem Produksi Jurusan Teknik Universitas Muhammadiyah Surakarta Basic Layout Types Product layouts Process layouts Fixed-Position layout Combination layouts Basic Layout Types Product layout Layout that uses standardized processing operations to achieve smooth, rapid, highvolume flow Process layout Layout that can handle varied processing requirements Fixed Position layout Layout in which the product or project remains stationary, and workers, materials, and equipment are moved as needed Product Layout Raw materials or customer Material and/or labor Station 1 Material and/or labor Station Station Station 2 3 4 Material and/or labor Finished item Material and/or labor Used for Repetitive or Continuous Processing 6-4 Advantages of Product Layout High rate of output Low unit cost Labor specialization Low material handling cost High utilization of labor and equipment Established routing and scheduling Routing accounting and purchasing 6-5 Disadvantages of Product Layout Creates dull, repetitive jobs Poorly skilled workers may not maintain equipment or quality of output Fairly inflexible to changes in volume Highly susceptible to shutdowns Needs preventive maintenance Individual incentive plans are impractical 6-6 A UU-Shaped Production Line Figure 6.6 In 1 2 3 4 5 Workers 6 Out 10 9 8 7 6-7 Product Layout Figure 6.7 (cont’d) Product Layout (sequential) Work Station 1 Work Station 2 Work Station 3 Used for Repetitive Processing Repetitive or Continuous Processes 6-8 Process Layout Figure 6.7 Process Layout (functional) Dept. A Dept. C Dept. E Dept. B Dept. D Dept. F Used for Intermittent processing Job Shop or Batch Processes 6-9 Advantages of Process Layouts Can handle a variety of processing requirements Not particularly vulnerable to equipment failures Equipment used is less costly Possible to use individual incentive plans 6-10 Disadvantages of Process Layouts In-process inventory costs can be high Challenging routing and scheduling Equipment utilization rates are low Material handling slow and inefficient Complexities often reduce span of supervision Special attention for each product or customer Accounting and purchasing are more involved 6-11 Fixed Position Layouts Fixed Position Layout: Layout in which the product or project remains stationary, and workers, materials, and equipment are moved as needed. Nature of the product dictates this type of layout Weight Size Bulk Large construction projects 6-12 Cellular Layouts Cellular Production Layout in which machines are grouped into a cell that can process items that have similar processing requirements Group Technology The grouping into part families of items with similar design or manufacturing characteristics Functional vs. Cellular Layouts Table 6.3 Dimension Functional Cellular Number of moves between departments many few Travel distances longer shorter Travel paths variable fixed Job waiting times greater shorter Throughput time higher lower Amount of work in process higher lower Supervision difficulty higher lower Scheduling complexity higher lower Equipment utilization lower higher Service Layouts Warehouse and storage layouts Retail layouts Office layouts Service layouts must be aesthetically pleasing as well as functional Designing Process Layouts Information Requirements: 1. List of departments 2. Projection of work flows 3. Distance between locations 4. Amount of money to be invested 5. List of special considerations 6. Location of key utilities Example 3: Interdepartmental Work Flows for Assigned Departments 30 1 A 170 B 3 10 0 C 2 Process Layout Milling Assembly & Test Grinding Drilling Plating Process Layout - work travels to dedicated process centers Functional Layout 222 444 Mill 111 333 111 333 Lathes 222 111 444 222 Drill Grind 3333 1111 2222 Heat treat Assembly 111 Gear cutting 111 444 -1111 Lathe 222222222 3333333333 Mill Mill Drill Drill Lathe Mill 44444444444444 Mill Heat treat Gear -1111 cut Heat treat Grind - 2222 Heat treat Grind - 3333 Drill Gear - 4444 cut Assembly Cellular Manufacturing Layout