Rapid Prototyping
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Rapid prototyping is a process that uses 3D CAD models and layer-by-layer construction to automatically build physical models. There are several techniques, but they generally involve creating a CAD file, converting it to STL format, slicing it into thin layers, and constructing the model layer-by-layer. The basic advantages are that complex shapes can be made quickly with less material waste than traditional methods. Some disadvantages are that the machines and materials can be expensive and finished prototypes may have rougher surfaces than machined parts. Rapid prototyping is used in various industries like technology, medicine, and architecture to test designs early in the development process.
Rapid Prototyping
- 1. ---------------------------------------------- RAPID PROTOTYPING ---------------------------------------------- Mr. KONAL SINGHMr. KONAL SINGH Director and Founder of ProBotiZ Group, NagpurProBotiZ Group, Nagpur (W) - Probotizgroup.com (M) - 8862098889, 9423632068 (E) - probotizinfo@gmail.com
- 2. OUTLINES Definition. Basic Processes. Classification. Advantages & Disadvantages. Application of RP. 2
- 3. DEFINITION RAPID PROTOTYPING The term rapid prototyping (RP) refers to a class of technologies that can automatically construct physical models from Computer-Aided Design (CAD) data. 1st technique for RP become available in late 1980’s . 1st machine was released onto the market in late 1987. 3
- 4. THE BASIC PROCESS 4 CREATING THE 3D CAD MODEL OF THE DESIGN CONVERTING THE CAD MODEL INTO STL FORMAT SLICING THE STL FILE INTO THIN LAYERS CONSTRUCTING THE MODEL ONE LAYER A TOP ANOTHER CLEANING AND FINISHING THE MODEL
- 5. THE BASIC PROCESS 5 CAD MODEL CREATION First the object to be build is modeled using a CAD software package Or by using a laser scanner or a Coordinate Measuring Machine (CMM). ,,,,,,,,,,,,,,,,,,,,,,,,,(“Reverse Engineering”)
- 6. THE BASIC PROCESS 6 CONVERSION TO STL FORMAT STL (standard tessellation language). This format represents a 3-dimentional surface This file contains the coordinates of the component.
- 7. THE BASIC PROCESS (cont.) 7 Since the STL-format is universal, this process is identical for all of the RP build techniques.
- 8. THE BASIC PROCESS SLICE THE STL FILE 8
- 9. THE BASIC PROCESS LAYER BY LAYER CONSTRUCTION The component is made layer by layer. As the first layer is created the model is lowered by the thickness to produced next layer. 9
- 10. THE BASIC PROCESS CLEAN AND FINISH Remove part from the machine. Detaching all supports. cleaning and surface treatment. apply possible painting etc. 10
- 12. LIQUID PHASE RP TECHNOLOGIES 12 Stereo Lithography (SLA)
- 13. POWDER FORM RP TECHNOLOGIES 13 Selective Laser Sintering (SLS)
- 14. GENERAL ADVANTAGES OF RP Almost any shape or geometric feature can be produced. Errors and flaws can be detected at an early stage. Material waste is reduced. No tooling is necessary . The designers and the machinery can be in separate places. Reduction in time and cost. 14
- 15. GENERAL DISADVANTAGES OF RP The price of machinery and materials is high. The surface is usually rougher than machined surfaces. Some materials are brittle. The strength of RP-parts are weaker in z-direction than in other. 15
- 16. APPLICATION OF RP ? 16
- 17. APPLICATION OF RP TECHNOLOGY 17 The task was to test different alternative INTAKE MANIFOLDS. The parts (three) were made of Windform XT with laser sintering. By using SLS the time from desktop to product took only about 10 % of the time earlier.
- 18. APPLICATION OF RP MEDICAL 18 Medicine Models of skulls etc can be used for training of surgical operations
- 19. APPLICATION OF RP MEDICAL (cont.) 19 These Siamese twins were successfully separated. The operation was planned with models of the skulls.
- 20. APPLICATION OF RP ARCHITECTURE 20
- 21. REFERENCES 1. C.K., Leong, K.F. (2000) Rapid Prototyping: Principles and Applications in Manufacturing, World Scientific. 2. Pham, D.T., Dimov, S.S. (2001) Rapid Manufacturing, Springer-Verlag London Limited. 3. Gebhardt, A., (2003) Rapid Prototyping, Hanser Gardner Publications, Inc., Cincinnati. 21
- 22. THANK YOU 22