24-07-2014, 01:38 PM
COMPUTER INTEGRATED PRODUCTION PLANNING
COMPUTER INTEGRATED.pptx (Size: 1.23 MB / Downloads: 31)
INTRODUCTION
use of computers in production dates back to early 1960’s
Joseph orlicky, George Plossl and Oliver wight are pioneers in modernizing production management function
Takes advantage of data processing and computational powers
FUNCTIONS
FORECASTING:
Predicting future sales activity of firm’s products
Classified according to time horizon
Long range: five years or more
Intermediate range: two years
Short range: 3-6 months
PRODUCTION PLANNING
Production planning:
Called “aggregate production”
Objective is to establish general production levels for product groups over the next year
Based on sales forecast
Used to raise or lower inventories, stabilize production
MASTER SCHEDULING
Translation of aggregate production plan
Specifies how many units of each product are to be delivered and when
It should be converted into purchase orders for raw materials, orders for components
REQUIREMENTS PLANNING
Involves order of raw materials, purchased parts.
To see that components and assemblies are assemblies are available when needed
purchasing : buying raw materials for manufacture and finished products from sub-contract
EXPEDITING
To compare the actual progress of the order against production schedule
Involves re-arranging the sequence in which orders are to be done on a certain machine
Quality control: assuring quality of product and its components meets the standards specified by designer
SHIPPING AND INVENTORY CONTROL
Final step in production control cycle
Shipping product directly to customer or stocking the item in inventory
To ensure that enough products of each type are available to satisfy customer demand
Company’s investment in inventory must be minimum
COMPUTER-INTEGRATED PRODUCTION MANAGEMENT SYSTEM
Additional features increased in level of professionalism.
Linear programming, inventory models, queueing theory are applied
Companies are gradually abandoning the traditional approach in favour of CIPMS
PLANNING AND CONTROL
Traditional
focus is on planning
planning complex and computerized
JIT
focus is on control
procedures kept simple and visual
rather than planning and forecasting for an uncertain future, the firm attempts to respond to what actually happens in real time with flexible, quick operations.
MAINTAINCE
Traditional
corrective maintenance, repairing a machine when it breaks down
done by experts who do nothing but repair broken equipment
equipment run fast
JIT
preventive maintenance, conducting maintenance before the machine is expected to fail, or at regular intervals.
done by equipment operators
equipment run slow (minimizes their chance of breakdown while maximizing their output)
PRODUCT PORTFOLIO
“The set of different product offerings that a company provides. Products can be unique, share common systems, and/or production methods.”
Product portfolio architecture – “system strategy for layout out components and systems on multiple products”