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

Class A Surface:-

# its the surface which will be visible to the coustomer

# it contains all the asthetic shape and high surface quality

# its the surface which is used to creat plastic part

Draft Analysis:-

# The draft analysis technique is used to analyze whether our part model created in CAD is manufacturable based on the draft condition applied

# Green denotes the draft angle is standard 3 degree

# Blue denotes it is below 3 degree

# Red denote that the product is not productable

In this design I have used 90deg draft angle

Tooling Axis:-

# The direction in which the mold called the tooling axisor core and cavity opens is tooling asix

# The drafting angle (3 degree) will be considered according to the tooling asis

# The white which passes through the class A surface is called tooling axis

Class B Surface:-

# it is the inner surface of the model which will not be seen by the coustomer

# it contains the engineerg aspects of the model

# it is surface where ejector pins will make contact

Class C Surface:-

# It is the surface which joins Class A and Class B Surface

# It determines the thickness of the model

# it is not visible most of the time

Rib & Screw Bosses:-

Considering the rules for designing the RIB dimension taken:-

T=0.5 object thickness

A=0.4 * T= 0.4 * 2.5=1 Rib thickness

B=4*T=4*2.5 =10 Rib height

E= 2 deg Draft

Considering the rules for designing the Bosses dimension taken:-

Considerig the screw to be M5

D=5 Outer diameter

d=2.5 Inner diameter

B=10 Height

E=2 Draft