Week 9 - Project 1 - Door Trim Lower with Engineering Features
Engineering features for door applique
The door applique of class A surface is given and we need to attach then heat stakes amd locaters
firstly we need to create the Tooling Axis,class B and class C surface from the class A door applique
creation of Tooling axis
- for creating the tooling axis for the class A surface it must consider the some rules
- It must and should clear all the surfaces in core and cavity
- we need to select the flat surface from class A and extract it and create the tooling axis with normal to surfcae
- perform the draft anaylsis on class A and check the whether it clearing or not
- if not clearing create the tooling axis with bisecting method and check it
- As for the door trim it is clearing in normal to surface
Draft analysis for class A and tooling axis
Creation of Class B
- At first we need to offset the given class A surface for the 2.5mm
- As we know the it will create patches in between the Class B surface
- so we need to fill the patches by extrapolite the adjcent side of the patches and trim to form the single surface
- After fill all patches apply the fillets on the class b surface where ever requried
Class B surface
creation of C surface
- class C surface is in between the class A and Class B surfaces it used to join the class B and Class A
- for creating class C we use sweep tool with normal to surface or with tooling direction based on the requriment
- give the direction, draft angle , length based on the given class A
Class C surface
After that we need to join the Class A and Class B then trim with the Class C to form A closed surface
create a closed part the perform the draft analysis of the compenet
closed surface
Draft analysis of final component
creation of heat stakes and locaters
- Heat stakes is generally plastic welding where it is a method of joining of two or more parts
- Locaters are the used to specify the space in three dimensional object with 12 degree of fredom
These locaters are two types
- 2-way locater(it arrest in 2 degree of fredom by single rib)
- 4-way locater(it arrest the 4 degree of fredom by 2 ribs)
we want to foloow some desgin considerations for creating loacters and heat stakes
- loacters are intersect first then hesat stakes
- heat stakes should have less height than the loacter
- for fixing locaters should fix first then heat stakes
- if should not have sharpe edges and have some curve surface
4-way loacter and heat stakes
After creating the locaters and heat stakes it should assemble with fianl compeng and perform draft analysis
Catia part and iamges attached below for your reference