Week 14 challenge
Aim : To model and assemble Butterfly Valve and apply GD&T to the butterfly Valve.
Introduction:
A butterfly valve is a valve that isolates or regulates the flow of a fluid. The closing mechanism is a disk that rotates. A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.
Procedure:
For modeling and assembly of butterfly valve different parts of butterfly valve was designed such as
- Body
- Shaft
- Disc plate
- Retainer
- Lever
- Nut
- Screw
For modeling above parts different Commands were used such as
- Sketch is used to create a 2D drawing which is later used to form 3D model.
- Extrude the sketch or selected sketch contours in one or two directions to creat a solid feature.
- A Hole feature is used to create holes on the model.
- Unite is used to convert two or more solid bodies into one solid body.
- Revolves a sketch or selected sketch contours around an axis to create a solid feature.
- Chamfer is used to connect two adjacent faces using an inclined line.
Parts of Butterfly Valve:
1.Body:
2.Shaft:
3.Disc Plate:
4.Retainer:
5.Lever:
6.Nut:
7.Screw:
Assembly of Butterfly Valve:
- Assembly file is opened in NX CAD.
- Above parts are added in the assembly file.
- Now, one by one parts are assembled using Move part command and assembly constraint command.
- Different constraints are used to assemble butterfly valve, such contraints are: Infer Axis, Touch, Align.
- Finally, assembly of BUtterfly vlave is saved in the folder where all the other parts are saved.
Conclusion: Designing and Modelling and drafting of different parts and assembly of Butterfly Valve is completed.