Flexible Manufacturing System (FMS): Definition and How It Works

TL;DR: A Flexible Manufacturing System (FMS) uses computer-controlled machines and automated material handling to produce different products efficiently, even when demand or volumes change.

A Flexible Manufacturing System helps manufacturers respond to changing demand while keeping production efficient and cost-controlled. It allows multiple products to be manufactured using the same setup, with minimal downtime between changes.

Flexible Manufacturing System Definition

A Flexible Manufacturing System (FMS) is a combination of automated machines, material handling systems, and a central control computer. Together, these components allow manufacturers to adjust production levels, switch between products, and manage workflows with minimal manual intervention.

What is FMS and How Does It Work?

In an FMS setup, multiple machines work either independently or in coordination, all controlled by computers. The system manages loading, machining, testing, storage, and transfer of materials across stages. A central control computer coordinates machine movements and material flow.

Objectives of a Flexible Manufacturing System

The primary objective of FMS is to improve productivity while reducing costs and manual dependency, while supporting product and volume variability.

Types of Flexible Manufacturing Systems

Based on Operation Layout

• Progressive

• Loop

• Ladder

• Open Field

• Robot-Centred

Based on Number of Machines

• Single-machine systems

• Dual or triple-machine systems

• Multi-machine flexible manufacturing systems

Based on Level of Flexibility

• Random

• Dedicated

• Engineered

• Modular

Benefits of a Flexible Manufacturing System

• Reduced downtime

• Lower work-in-progress inventory

• Reduced labour dependency

• Improved production flexibility

• Lower material wastage

• Faster changeovers

Levels of Manufacturing Flexibility

Basic Flexibility

Material handling, operational sequencing, and machine flexibility.

Aggregate Flexibility

Processing, routing, and volume flexibility.

System Flexibility

Product, process, routing, volume, and expansion flexibility.

Process Flow of a Flexible Manufacturing System

An FMS is managed through computer-controlled workstations and automated material handling systems coordinated by a central control computer.

Limitations of a Flexible Manufacturing System

High initial investment, technology obsolescence risk, infrastructure requirements, and workforce resistance are common challenges.

FAQs

What is a Flexible Manufacturing System?

A Flexible Manufacturing System is a computer-controlled production setup that includes automated machines, material handling systems, and a central control unit to manage flexible production.

How does an FMS improve efficiency?

It reduces setup time, improves machine utilisation, and enables fast product switching.

Is FMS suitable for Indian SMEs?

FMS can be suitable where product variety is high, provided cost and readiness are evaluated.

Can FMS handle different production volumes?

Yes, it is designed to scale efficiently across varying volumes.

Which industries use FMS most?

Automotive, engineering goods, electronics, and high-mix manufacturing.