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

DESIGN OF THE DOOR TRIM LOWER WITH ENGINEERING FEATURES INCLUS HEAT STAKES,LOCATORS & RIBS

Aim: To design the door trim lower component from the given class A surface and create the engineering features ( heat stakes and locators ) on the component using CATIA V5 software

Objectives:

Creation of Tooling axis with appropriate draft angle.Creation of other surfaces (eg, B and C surfaces) for creating a solid component. • Perform Draft analysis on Class A surface and Solid model hence created.

Procedure followed:

The following steps are included while designing the door handle with B side features

1. Tooling axis creation
2. Draft analysis of class A surface
3. Class B surface generation
4. class C surface generation
5. Final trim
6. Solid body generation
7. Draft analysis of the solid body
8. Locator creation
9. Heat stake creation
10. Translation
11. Draft analysis of the B side features

Class A surface:

Class a surface is an asthetic surface with a polished surface which will be visible for the customers, and with the aid of the class A we could be able top geneate the class B and class C surfaces

Class B surface:

class B is an engineering surface where the B side features include the ribs, screw bosses , doghouses are located

Class C surface:

Class c is an intermediate surface between the class A and class B surfaces.It is generated by sweep feature either with reference surface or with the draft direction.If the generated C surface is parallel yo the tooling axis then we make the aid of the draft direction or else proceed with the reference surface

Commands deployed:

Surface commands:

• Extract
• Boundary
• Extrapolate
• Sweep
• Join
• Trim
• Intersect
• Multi section surface
• Surface extrude
• Multi extract

Part Workbench commands:

• solid surface
• Thicken
• Pad
• Draft
• Fillet

Tooling axis creation:

Draft analysis on class A surface:

Now perform the draft analysis of the Class A surface with respect to the tooling axis created so that the surface of the Class A need to clear the draft of 3mm. So the class A surface is perfectly claering the draft analysis so we need to move further for the creation of the class B surface

Class B surface creation:

Now offset the class a surface to a thickness value of 2.5mm so there in the offsetted surface we encounter some patches, so we need to work on them to create the Class b surface

For working on these patrches I divided the class A surface into 4individual patches excluding the fillets as the fillets would create miore problem so we need to apply them at the end and extrapolate them to a sufficient length

so , thet proper interaction should be formed between the patches.Now apply the trim to form a combined surface and apply the fillet value to obtain the required class B surface

CREATION OF LOCATORS:

To create the locators, I created a sketch on the body. After creating the sketch, I pad it 22mm in height and thicken it to 1.3mm and I drafted it with 0.5deg in the direction of the tooling axis. I gave 5mm of chamfer with 45deg of inclination and after I gave a fillet of 0.3mm radius.

please find attached cat.prt