The document summarizes key aspects of manufacturing management including loading, scheduling, sequencing, dispatching, and control. Loading involves assigning jobs to work centers. Scheduling determines when operations will be performed and includes master, operation, and daily schedules. Sequencing groups operations into batches and prioritizes them. Dispatching sets production activities in motion through instructions and release of orders. Control aims to achieve quality and quantity on time through planning, scheduling, and following up.
2. CONTENT OF THE PRESENTATION :
1. INTRODUCTION
2. LOADING
3. SCHEDULING
4. SEQUENCING
5. DISPATCHING AND,
6. CONTROL
7. CONCLUSION
3. INTRODUCTION
The production process is an essential part of any business. It is a process of turning raw materials and
ideas into products and services. It is important to develop efficient and effective production processes
because they heavily impact business performance.
Production process or “production line” means those industrial activities beginning when raw
materials are delivered to the new or expanding business’ fixed location and generally ending when the
items of tangible personal property have been packaged for sale, or are in saleable form if packaging is
not done. However, the production process may include quality control activities after the items have
been packaged.
4. LOADING
Loading involves assigning jobs to work centers and to various machines in the work centers. If a job
can be processed on only one machine, no difficulty is presented. However, if a job can be loaded on
multiple work centers or machines, and there are multiple jobs to process, the assignment process
becomes more complicated. The scheduler needs some way to assign jobs to the centers in such a
way that processing and setups are minimized along with idle time and throughput time. Two
approaches are used for loading work centers: infinite and finite loading. With infinite loading jobs
are assigned to work center. Priority rules are appropriate for use under the infinite loading
approach. Jobs are loaded at work centers according to the chosen priority rule. This is known as
vertical loading. Finite loading projects the actual start and stop times of each job at each work
center and compares the processing time so that process time does not exceed capacity. With the
finite loading the scheduler loads the job that has the highest priority is loaded on all required work
centers it will require. Then the job with the next highest priority is loaded on all required work
centers, and This process is called Horizontal loading
5. SCHEDULING
Scheduling means specifying means, specifying the time that will be needed for the production of articles at
each stage. Scheduling determines when an operation is to be performed or when work is to be completed;
the difference lies in the detail of the scheduling procedure. Preparation of schedules (time tables for each
and every operation) is not an easy task. In preparing the schedules, the planning department should consider
various types of orders on hand and the expected dates by which they should be honored (i.e., promised to
the customers). Orders may be general (regular) or urgent (rush). In the case of rush orders, overtime by the
workers is needed.
Types of Schedules are:-
1. Master Schedule: This indicates desired quantities of each type of product to be produced on a daily or
weekly or monthly or quarterly basis to meet the customers’ orders or forecasted demand.
2. Operation Schedule: It refers to fixing the final total time required to do a particular piece of work
(operation).
3. Daily Operations Schedule: It reveals the time required to do each detailed operation of a given job with
the assigned machine or process
6. SEQUENCING
Sequencing is the order of tasks to be done in chain. Hence the next task is started once the previous
one is completed. Sequencing means grouping production operations into production batches and
arranging them by priority. Production sequencing is crucial in manufacturing, as it is designed to
eliminate much of the non-productive time associated with the process. Tasks such as preparation,
configuration and clean-up are accelerated, optimizing productivity as well as overall yield
Prioritize jobs assigned to a resource
If no order specified use first-come first-served (FCFS)
Other Sequencing Rules
FCFS – first-come, first-served
LCFS – last come, first served • DDATE – earliest due date
CUSTPR – highest customer priority • SETUP – similar required setups
SLACK – smallest slack • CR – smallest critical ratio
SPT – shortest processing time • LPT – longest processing time
7. SEQUENCING JOBS
• Operations schedules are short-term plans designed to implement the sales and operations
plan
• An operation with divergent flows is often called a job shop
• Low-to medium-volume production
• Utilizes job or batch processes
• The front office would be the equivalent for a service provider
• Difficult to schedule because of the variability in job routings and the continual introduction of
new jobs to be processed
• An operation with line flow is often called a flow shop
• Medium- to high-volume production
• Utilizes line or continuous flow processes
• The back office would be the equivalent for a service provider
• Tasks are easier to schedule because the jobs have a common flow pattern through the system
8. DISPATCHING
• Dispatching is the routine of setting productive activities in motion through the release of
orders and necessary instructions according to pre-planned times and sequence of operations
embodied in route sheets and loading schedules.
• Functions of Dispatching:
• (i) To check the availability of input materials and ensure the movement of material from
store to first process and then from process to process.
• (ii) To ensure the availability of all production and inspection aids.
• (iii) To obtain the requisite drawings, specifications and material lists. To assign the work
appropriate machine, workplace and men.
• (v) The issue of job orders authorising operations in accordance with dates and times
previously planned and entered on load charts and route sheets.
• (vi) The issue of time tickets, instruction cards and other required items to the workers who
are to perform the various activities.
• (vii) The issue of inspection orders after each operation in order to determine result regarding
the quality of products if excessive spoilage occurs, to find out its causes.
9. CONTROL
Production control is the task of predicting, planning and scheduling work, taking into account manpower,
materials availability and other capacity restrictions, and cost so as to achieve proper quality and quantity at
the time it is needed and then following up the schedule to see that the plan is carried out, using whatever
systems have proven satisfactory for the purpose.
The benefits of control include:
Improved organization for regular and timely delivery
Better supplier communication for raw materials procurement
Reduced investment in inventory
Reduced production cost by increasing efficiency
Smooth flow of all production processes
Reduced waste of resources
Production cost savings that improve the bottom line
10. CONCLUSION
• In producing a good product, every step have to be taken in it’s
right order. Starting from designing the desired product to the
material selection. the material need to be considered from a
few aspect which are material availability, cost and so on before
planning the product.
• Before reaching the customers, a product needs to reach the
aspect of process validation and product design conformation.
then only the delivery order can be issued and the production can
be continued and improved as well