applications of rapid prototyping

7/27/2019 Applications of Rapid Prototyping

1/13

Applications of rapid prototyping

Presented by

VIGNESH KUMAR.V

ME(ENGINEERING DESIGN)


2/13

Rapid Prototyping

A family of fabrication processes developed

to make engineering prototypes in minimum lead

time based on a CAD model of the item

Rapid prototyping allows a part to be made inhours or days, given that a computer model of the

part has been generated on a CAD system.


3/13

Why is Rapid Prototyping Important?

Product designers want to have a physical model of a

new part or product design rather than just a

computer model or line drawing

*Creating a prototype is an integral step in design.*A virtual prototype may not be sufficient for the

designer to visualize the part adequately.

*Using RP to make the prototype, the designer can

see and feel the part and assess its merits and

shortcomings.


4/13

Two Basic Categories used in RP:

1. Material removal RP.

machining, using a dedicated CNC machine thatis available to the design department on short

notice.2. Material addition RP.

Adds layers of material one at a time to build thesolid part from bottom to top .


5/13

Alternative names for RP:

Layer manufacturing

Direct CAD manufacturing

Solid freeform fabrication

Rapid prototyping and manufacturing.

RP technologies are being used increasingly to make

production parts and production tooling, not just

prototypes


6/13

Classification of RP Technologies.

The RP classification used here is based on the

form of the starting material:

1. Liquid-based

2. Solid-based

3. Powder-based


7/13

RP technology in coin industry.

*In coin industry system using CAD/CAM, CNC

and RP technologies.

*Similar to the jewelry industry.

*It has traditionally increase regarded labor

intensive and crafts based.


8/13

Steps followed

1st step - 2D art work has read into art cam and cad cam system.

2nd step - generation of the surfaces.(shape of the coin

generated)

3

rd

step - generation of the relief(each color assign in the shapeprofile)

4th step - wrapping of the 3D relief on to the coin

surfaces.(triangular mesh generate on the coin surface).

5

th

step convert the triangular mesh file in to STL file format.(this is to be used for building the RP model)


9/13

Applications

1. Design.

2. Engineering analysis and planning .

3. Tooling and manufacturing.


10/13

Design Applications

I. Reduced lead times to produce prototypes.

II. Improved ability to visualize part geometry.

III. Early detection of design errors .


11/13

Engineering Analysis and Planning

a) Comparison of different shapes and styles to determine

aesthetic appeal

b) Wind tunnel testing of streamline shapes

c) Stress analysis of physical model

d) Fabrication of pre-production parts for process planning

and tool design


12/13

Tooling Applications

Two approaches for tool-making:

1. Indirect RTM method

2. Direct RTM method


13/13

Thank you..!

applications of rapid prototyping

Documents