Challenge

Week 10 - Challenge 3 - Door Trim Lower with Engineering Features

MMahendiran .P15 Jun 2023

FEA

AIM

To Create the Heat Stakes and the locators considering the design rules.

GENERAL RULES

Surface check
Tooling Axis
Draft Analysis
B Surface
C Surface
Final Output
Create Engineering Features

ENGINEERING FEATURES

Screw Boss
Heat Stakes

ATTACHMENT FEATURES

Locators

RIBS

Ribs provides a economical stiffness and strength in molded parts without increasing overall wall thickness

LOCATORS

A Working Part is free in space can move in an infinite number of directions. For analysis, this motion can be broken down into 12 directional movements or "degrees of freedom". All 12 degrees of freedom must be restricted to ensure proper referencing of a work-piece. It is also known as 3-2-1 Principle

HEAT STAKES

Heat Stakes is the process to attach two separate components together by melting Plastic Material into a desired shape that will holds Secondary components.

Advantages

Multiple fastening points
Reduced cost of machinery
Simplification of machinery

WORKING PROCEDURE

To Create Tooling Direction for given A Surface
To create a B surface for using A surface
A Surface to be offset in 2.5mm
Some missing fillets need to be solve
Extract the offset surface and extrapolate the extract surface
Trim the extrapolate suirfaces
B Surface to be created
To create C surface for using A surface
Create a Boundary
After that using sweep for Draft as TOOLING DIRECTION
Using SWEEP,EXTRAPOLATE,TRIM,SPLIT
C Surface to be created
Combine A Surface & C Surface by using JOIN
Final output to be Trim the B surface & JOIN A&C
Part body using Close surface for Final Trim
To Create Enginerering Features
Heat Stakes and Locators and Dog house

LOCATORS WORKING PROCEDURE

To Create 4 way Locators
Extract the surface and Create Point
Create Plane and Open Positioned sketch
Open Part body and create a pad to use Thickenss 1mm
After that Draft with 0.5 degree
Use Edge fillet 0.3mm
Chamber 3mm
After Creating the Locators Copy these and Paste special in separate body and Translate
Already Reference Point Available in that INPUTS
So, Translate the body POINT to POINT
Open Main part body and Use UNION TRIM with remove unwanted part.

HEAT STAKES

To Create a Point
Create Plane and Open Positioned sketch
Open Part body and create a pad
After that Draft with 0.5 degree
Use Edge fillet 0.3mm
Chamber 3mm
After Creating the Heat Stakes Copy these and Paste special in separate body and Translate
Already Reference Point Available in that INPUTS
So, Translate the body POINT to POINT
Open Main part body and Use UNION TRIM with remove unwanted part.

RIBS

Create a Positioned sketch by using the alraedy Heat stakes Sketch or Datum plane with point
Open part body and pad with thickness 1mm neutral fibre
Draft angle 0.5 degree
Thickness - 0.4 mm into 2.5mm
Height - 5mm into Thickness
After Creating The Ribs
Open the new body name it as HEAT STAJES AND RIBS ASSEMBLY and REMOVE heat stakes in the ribs with Single part body after that Translate that body.

COUNTER PART CLEARANCE