3D Finishing in BIW fixture Design

Aim:

1. Design all the other remaining Units required for this Fixture assembly

2. Perform 3D finish and create Rough locators for the Assembly design created for the challenge on week 7.

Design some remaining/needed units for fixture assembly

1) Rough locators

• A rough locator is a part designed to guide the panel, to locate the car panel on to the pins accordingly. A rough locator can be of standard part or make part.
• Rough locators are also work as Poka-yoke. poka-yoke is a japanese concept used for mistake profing.
• below fig shows rough locator position;

2) Providing more clamping unit effective clamping. as well as rest mylar in clamping unit supports middle panel and gives more stable resting. below image shows before and after implementation of this clamp unit :

3)Rearenging rest unit for in triangular postion so they provide more stable rest for middle panel. as shown in fig below:

3D Finsish:

In 3D finshing we perform and ensure following points:

1. Naming of parts
2. Structuring of design tree
3. Holes concentricity
4. Nomanality
5. Machining surfaces
6. Mylar Spliting
7. Gaps checking
8. Butting of parts
9. Make changes if any clash
10. Tooling hole
11. Fastners (Washers,bolts,dowel pins,etc.)

*Note: some of threaded holes,quardinates of parts which have locating pin those unit cannot be maintain in nominal. because pin holes in panel are not in nominal it self.

1) Fixture assembly:

• Naming of design tree is done. and structuring design tree in way that its simple to identify the units. some units are use multiple time those are easy to indentify by its name.

2)Base Unit:

• Naming of parts and sturucturing design tree

• Threaded hole and dowel holes making nominal and color coding done so easy to distinguise holes.
• Threaded hole (Yellow), clearnce hole (Sky blue), Dowel Hole(Blue), Machining surface(orange)

• some changes need to done to avoid fouling/clash of weldment square tubes and providing more square tube to give strength to base unit, below image shows before and after finishing.

3) Fixed Pin Unit:

• Holes are make to the nominal and Concentric to each other.
• Proper butting of two parts is done.
• Rough locator and fastners are implemented.
• color coding is done as per the standerds.
• structuring design tree renaming of parts is done.
• below are the some images after 3d finishing done on fixed pin unit.

4) Retractable pin unit

• Holes are make to the nominal and Concentric to each other.
• open position of retractable pin is shown in yellow color
• Proper butting of two parts is done.
• color coding is done as per the standerds.
• structuring design tree renaming of parts is done.
• below are the some images after 3d finishing done on fixed pin unit.

5)Swivel Clamp Unit

• Holes are make to the nominal and Concentric to each other.
• Proper butting of two parts is done.
• Rough locator and fastners are implemented.
• color coding is done as per the standerds.
• structuring design tree renaming of parts is done.
• mylar spliting is done.
• open position is shown in yellow color
• below are the some images after 3d finishing done on swivel Clamp unit.

6)Power Clamp Unit

• Holes are make to the nominal and Concentric to each other.
• Proper butting of two parts is done.
• Rough locator and fastners are implemented.
• color coding is done as per the standerds.
• structuring design tree renaming of parts is done.
• mylar spliting is done.
• open position is shown in yellow color
• below are the some images after 3d finishing done on swivel Clamp unit.

7)Rest Unit

• Holes are make to the nominal and Concentric to each other.
• Proper butting of two parts is done.
• color coding is done as per the standerds.
• structuring design tree renaming of parts is done.
• mylar spliting is done
• below are the some images after 3d finishing done on swivel Clamp unit.

Final Render Image of fixture:

Conclusion: This Way i Design all the other remaining Units required for this Fixture assembly and Perform 3D finish and Rough locators for the Assembly design created for the challenge on week 7

**CAD file link**

https://drive.google.com/open?id=17AweTtnxT23FqARKUq7K5FqS6vKhYvsT