Challenge

Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1

WEEK 9 ATTACHMENT FEATURE OF RIBS AND SCREW BOSS IN DOOR HANDLE:

AIM:

To create ribs and screw boss in door handle with given class A surface at the thickness of 2.5mm.

DESIGN PROCESS:

PROCEDURE:

CLASS A SURFACE:

Class A surface is the aesthetic surface it is top surface of the component of door handle.
Class A surface is done in stylish team using ALIAS software.
Its the input of the plastic designer to design a component.

TOOLING AXIS:

Tooling axis is the important feature of the plastic component design it will deside the open and close of core and cavity of the machine.
To create tooling axis have to analysis class A surface choose the best side to place the tooling axis.
To create a tooling axis need a surface for that copy the surface from class A using with exract command.
Click the extact command select the surface give a no propagation element and give ok.
After that create a point at the middle of the surface.
Then create a line then named as the tooling axis.

CLASS B SURFACE:

Class B surface is the bottam surface of component in door handle design.
After creation tooling axis have to create class B surface for that offset the class A surface at given dimension of 2.5mm.

While offset the class A surface some area has dispatch.
For clear dispatch area use multisection command select the edges and also select the guide curve.
While selecting the edges give support the edges and also guide curve.
After clear the area have to extent the surface for help to trim surface.
For that use command of extrapolate for this command extent the surface at the requied dimension.

CLASS C SURFACE:

Class c surface is act like a thickness of class A and class B surface.
In class C surface have to clear to draft analysis for that use sweept command.
In sweept command two ways can be create a C surface.
In subtype select the with referance surface select the edge also select the surface and give the angle at the given dimention.
And another method is with draft direction select the edge also select draft direction and give the angle at the given dimension.
While create C surface have to split the surface into two or more surface to get proper surface.
After that join the sweept and form the C surface.

FINAL TRIM:

After create C surface use join command join the class A and C surface.
Then unhide the class B surface use trim command trim the class a and B then it form surface modeling of door handle.

CONVERTION OF SOLID:

After creating the surface of door handle then go to part workbench use close surface command select the surface give ok it form solid feature.

CREATION OF RIBS:

In given model ribs are parallel to each other at the certain distance have to follow the ribs rule.

For that draw a line at the certain distance then pad sketch at the thickness of 0.4*component thickness.
After that draft ribs at the dimension less then or equal to 0.5mm.
Use uniontrim obtion trim the excess surface of the ribs .
And give fillet maximum of 0.25mm.

CREATION OF SCREW BOSS:

Screw boss is the support feature to fix the component to located screw.
To create screw boss need to draw the circle at diameter of 5mm.
Then calculated the thickness of the screw boss formula of 2*thickness of component .
And also calculate the height of the screw boss at ratio of 3:1.
Then draft to the screw boss at the dimension of less or equal 0.5mm.
Then give a fillet at the give dimension of 0.25mm and assemble to the solid feature.

DRAFT ANGLE ANALYSIS:

CLASS A SURFACE:

While analysis the draft angle maked area it not cleared so that sylish team have to concentrate at draft angle it mush be in 3deg.

FINAL COMPONENT:

TREE STRUCTURE:

CONCLUSION:

Created the ribs and screw boss to the door handle at the give thickness 2.5mm.

Ship work like this
in your own course.