Public Interaction Computer Systems in Desiging

16 Public Interaction

Computer Systems in designing

CAD – Computer Aided Drafting and Designing including Rapid Prototyping – SLA, SLS or 3D printing CAM – Computer Aided Maufacturing CNC – Computer Numerically Controlled CIM – Computer Integrated Manufacturing SPC – Statistical Process Control Concurrent Engineering

Computer Systems in designing Word processing, Internet research, , text Word processing, Internet research, , text Word processing, Internet research, , text, excel, Models generated on PC 2D, Prodesktop, AutoCad Inventor, Corel draw, , Printers, SLS, Rapid prototypes, 3D printing EXCEL, planning software, , TEXT EXCEL, DATA capture, Measurements, logging, weighing, speed, , NETWORKS, LAN, WAN EXCEL, DATA capture, Measurements, Word Processing,

CADD CADD or Computer Aided Drafting and Designing 2D 2D drawing packages such as 2D design, Coreldraw 3D 3D drawing packages such As ProDesktop, AutoCAD Inventor Rapid Prototyping Stereo Lithography (SL) Selective Laser Sintering (3D printing) Producing IDEAS ed

SLS selective laser sintering Selective laser sintering is an additive rapid manufacturing technique that uses a high power laser (for example, a carbon dioxide laser) to fuse small particles of plastic, metal, or ceramic powders into a mass representing a desired 3-dimensional object. The laser selectively fuses powdered material by scanning cross-sections generated from a 3-D digital description of the part (for example from a CAD file or scan data) on the surface of a powder bed. After each cross-section is scanned, the powder bed is lowered by one layer thickness, a new layer of material is applied on top, and the process is repeated until the part is completed

Stereo lithography Stereo lithography is a common rapid manufacturing and rapid prototyping technology for producing parts with high accuracy and good surface finish. A device that performs stereo lithography is called an SLA or Stereo lithography Apparatus. Stereo lithography is an additive fabrication process utilizing a vat of liquid UV-curable photopolymer "resin" and a UV laser to build parts a layer at a time. On each layer, the laser beam traces a part cross-section pattern on the surface of the liquid resin. Exposure to the UV laser light cures, or, solidifies the pattern traced on the resin and adheres it to the layer below

CAD to RP To get the idea prototyped requires one other piece of software: Autocad  slice  SLA The slice software takes the design and cuts it in to thin layers so that each layer can be processed in turn by the SLA or LS process.

CAM Computer Aided Manufacturing CNC (industry based) LatheMilling Laser Cutter (school) Mercury 40W Routers (school) Techsoft Ts-30

CNC The abbreviation CNC stands for computer numerical control, and refers specifically to a computer "controller" that reads G-code instructions and drives a machine tool, a powered mechanical device typically used to fabricate components by the selective removal of material.G-codemachine tool CNC does numerically directed interpolation of a cutting tool in the work envelope of a machine. The operating parameters of the CNC can be altered via a software load program.

CNC turning centre

CNC Milling Machine

CIM Computer-integrated manufacturing (CIM) is a method of manufacturing in which the entire production process is controlled by computer. Typically, it relies on closed-loop control processes, based on real-time input from sensors. It is also known as flexible design and manufacturing.

CIM

A CIM system is not the same as a "lights out" factory, which would run completely independent of human intervention, although it is a big step in that direction. Part of the system involves flexible manufacturing, where the factory can be quickly modified to produce different products, or where the volume of products can be changed quickly with the aid of computers.

CIM Some or all of the following subsystems may be found in a CIM operation: CAD/CAM (Computer-aided design/Computer-aided manufacturing) CAPP, (Computer-aided process planning) ERP (Enterprise resource planning)Enterprise resource planning CNC (computer numerical control) machine tools DNC, direct numerical control machine toolsdirect numerical control FMS, flexible machining systems ASRS, automated storage and retrieval systemsautomated storage and retrieval systems AGV, automated guided vehiclesautomated guided vehicles Robotics Automated conveyance systems Computerized scheduling and production control CAQ (Computer-aided quality assurance)Computer-aided quality assurance A business system integrated by a common database. Lean Manufacturing

SPC Statistical Process Control (SPC) is an effective method of monitoring a process through the use of control charts. Control charts enable the use of objective criteria for distinguishing background variation from events of significance based on statistical techniques. Much of its power lies in the ability to monitor both process centre and its variation about that centre, also known as a setpoint.control charts

SPC By collecting data from samples at various points within the process, variations in the process that may affect the quality of the end product or service can be detected and corrected, thus reducing waste as well as the likelihood that problems will be passed on to the customer. With its emphasis on early detection and prevention of problems, SPC has a distinct advantage over quality methods, such as inspection, that apply resources to detecting and correcting problems in the end product or service.

SPC – PID curves Overshoot Acceptable response Undershoot This could be graph of temperature of a furnace, for example. The Blue is the desired response and the green is the actual. However if the control system is not setup correctly you can get overshoot or undershoot

Concurrent Engineering A system of design that organises tasks in parallel. Any changes made to one CAD file will be accessible by all. AND If the changes affect any other files they will automatically update as well. For example, consider designers of a CAR working in various countries of the world on various different tasks.

Concurrent engineering Designers of Engine Manufacturing Designers of Body Designers of Electrics Networked Master Copy of all CAD files Generated

Concurrent engineering Designers of Engine Manufacturing Designers of Body Designers of Electrics Networked Master Copy of all CAD files Generated change

Concurrent engineering Designers of Engine Manufacturing Designers of Body Designers of Electrics Networked Master Copy of all CAD files Generated Changes change

Concurrent engineering Designers of Engine Manufacturing Designers of Body Designers of Electrics Networked Master Copy of all CAD files Generated Changes change Changes

Ethical Issues of Using CAD AdvantagesDisadvantages

Ethical Issues of Using CAM AdvantagesDisadvantages