| Computer-Integrated Manufacturing
Computer-Aided Design and Manufacturing
Computer-aided design (CAD); electronic system used to design products and parts a.
Replaces drafting by hand
Computer shows several views as designer creates the drawing c.
Stress analysis shows reaction to force, indicating where the design is weak or likely to fail d.
Successful designs are stored, building a library of designs that can be retrieved and reused 2.
computers used to:
Design production processes
Schedule manufacturing operations
Track labor costs
Send instructions to control machine tools
Direct materials flow
Integrates the design and manufacturing function
Translates the computer drawing or image into code, which directs and controls a machine to produce parts
Numerically Controlled (NC) Machines
Most commonly used form of flexible automation
One machine has many tools and performs many operations, perhaps machining a detailed part from a block of metal b.
Receives instructions from external source (tape or computer) [Mention CNC machines.] 2.
Computerized numerically controlled (CNC) machines
Computer-controlled machines programmed to perform various functions 2.
Increased travel or axes of movement rapidly increases price. b.
Robot must always know where it is relative to the work; precision depends on maintaining a reference point. 3.
Tools must be stored in predetermined locations.
Material must always be presented in the same orientation. c.
Some second-generation robots have sensors to simulate touch and sight. 4.
Relatively slow speed (when compared to fixed automation)
Usually not suitable for high-volume standardized production
Automated Materials Handling
Materials handling processes cost time and money and add no value to the product
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