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Master Production Scheduling

Master Production Scheduling. Contents for Master Production Schedule. MPS Activity. MPS Techniques. Bill of Material Structures for MPS. The Final Assembly Schedule. MPS Scheduler and Stability. Company Examples. Recall what we did for SOP. MPS Activity.

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Master Production Scheduling

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  1. Master Production Scheduling

  2. Contents for Master Production Schedule MPS Activity MPS Techniques Bill of Material Structures for MPS The Final Assembly Schedule MPS Scheduler and Stability Company Examples

  3. Recall what we did for SOP

  4. MPS Activity • Convert SOP into a specific manufacturing schedule • The role of SOP is to balance Supply and Demand Volume, while the MPS specifies the Mix and Volume of the output • Constructing and Updating the MPS record rolling through Time • A statement of future planned output, taking into account of the capacity limitations, production cost, and SOP

  5. Business Environment and Choice of MPS Unit • Make to Stock: • -End Item Numbers or Groupings( Consolidated Item Numbers) • Make to Order or Engineer to Order: • -Particular End Item or Real Customer Order • Assemble to Order: • -Large number of end item possibilities makes exact end-item configurations extremely difficult • -Typically doesn’t develop a MPS for end items, instead stated inPlanning Bills of Materials • -For option parts, MPS incorporates buffering or hedging

  6. MPS Activity: related MPCfunctions • Rough Cut Capacity Plan: Early Discovery of Bottleneck Resource

  7. MPS Techniques: leveling vs chase strategy • Available Row refers to the available quantity at the end of the period (10+20 – 5 = 25)

  8. MPS Techniques: rolling through time • Using new forecasts and lot sizing technique

  9. MPS Techniques: order promising • Available To Promise(ATP) on week 1 is in the bottom (20 – (5 +3+2)= 25)

  10. MPS Techniques: order promising- Mitel Corp.

  11. Bill of Material Structures for MPS • A fundamental rule: a company should have one and only one set of bills of materials or product structure records • However there are times when it is beneficial to have different structures that are based on the way it is sold with cost of maintaining different structures • They are called the Planning Bill: famous among them are Modular Bill and Super Bill (of Materials) • Modular bill of material: master scheduling may be easier but order entry tasks are more complex since each option must be evaluated • Super bill: average end item

  12. Bill of Material Structures for MPS: Modular Bill • MPS focuses on Waist Part of the Hourglass Structure

  13. Bill of Material Structures for MPS: Super Bill • The company produces 3, 4, 5 HP final products with 2 drive train options, and 3 brand name options(Taylor, …)

  14. The Final Assembly Schedule • MPS represents an anticipated build schedule, but FAS is the actual build schedule • MPS and FAS are different and the distinction is most clearly seen in Assemble to Order environment • Even in MTS environment, a single level bill of materials is maintained for each end item

  15. MPS Scheduler and Stability • The firm planned order concept • Supply 가능한 기간이 짧고 Backlog 기간이 길수록 MPS 스케쥴러의역할이 고될 것이다. • Fast Man simulation software • MPS Database에 대한 룰을 확실히 규정짓는 것이 중요하다 • Firm Planned Order: Frozen, Customer Promise, Manual Forecast

  16. Company Examples

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