17-05-2012, 10:17 AM
Industrial Automation
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Industrial Automation - Machines
Storage Systems
Handling Systems
Assembly Lines
Assembly Cells
Machines
Actuators
Sensors
Production Lines
Production Cells
Machines
Actuators
Sensors
Unit 1 Industrial Automation
Sections:
Production Systems
Automation in Production Systems
Manual Labor in Production Systems
Automation Principles and Strategies
Organization of the Course
The Realities of Modern Manufacturing
Globalization - Once underdeveloped countries (e.g., China, India, Mexico) are becoming major players in manufacturing
International outsourcing - Parts and products once made locally are now being made offshore (in China or India) or near-shore (in Eastern Europe)
Local outsourcing - Use of suppliers locally to provide parts and services
More Realities of Modern Manufacturing
Contract manufacturing - Companies that specialize in manufacturing entire products, not just parts, under contract to other companies
Trend toward the service sector
Quality expectations - Customers, both consumer and corporate, demand products of the highest quality
Need for operational efficiency - manufacturers must be efficient in in their operations to overcome the labor cost advantage of international competitors
Manufacturing Approaches
Automation
Flexible manufacturing
Quality programs
Integration
Lean production
Production System Defined
A collection of people, equipment, and procedures organized to accomplish the manufacturing operations of a company
Facilities – Factory and Equipment
Factory, production machines and tooling, material handling equipment, inspection equipment, and computer systems that control the manufacturing operations
Manufacturing Support Systems
Business functions - sales and marketing, order entry, cost accounting, customer billing
Product design - research and development, design engineering, prototype shop
Manufacturing planning - process planning, production planning, MRP, capacity planning
Manufacturing control
shop floor control,
inventory control, quality control
Automated System
Examples:
Automated machine tools
Transfer lines
Automated assembly systems
Industrial robots
Automated material handling and storage systems
Automatic inspection systems for quality control
Fixed Automation
Sequence of processing (or assembly) operations is fixed by the equipment configuration
Typical features:
Suited to high production quantities
High initial investment for custom-engineered equipment
High production rates
Relatively inflexible in accommodating product variety
Programmable Automation
Capability to change the sequence of operations throug reprogramming to accommodate different product configurations
Typical features:
High investment in programmable equipment
Lower production rates than fixed automation
Flexibility to deal with variations and changes in product configuration
Most suitable for batch production
Physical setup and part program must be changed between jobs (batches)
Flexible Automation
System is capable of changing over from one job to the next with little lost time between jobs
Typical features:
High investment for custom-engineered system
Continuous production of variable mixes of products
Medium production rates
Flexibility to deal with soft product variety
Reasons for Automating
To increase labor productivity
To reduce labor cost
To mitigate the effects of labor shortages
To reduce or remove routine manual and clerical tasks
To improve worker safety
To improve product quality
To reduce manufacturing lead time
To accomplish what cannot be done manually
To avoid the high cost of not automating
Automation Principle
Understand the existing process
Input/output analysis
Value chain analysis
Charting techniques and mathematical modeling
Simplify the process
Reduce unnecessary steps and moves
Automate the process
Ten strategies for automation and production systems
Automation migration strategy
Automation Strategies
Specialization of operations
Combined operations
Simultaneous operations
Integration of operations
Increased flexibility
Improved material handling and storage
On-line inspection
Process control and optimization
Plant operations control
Computer-integrated manufacturing