Week 8 - Challenge 3 - Coin Holder Design

AIM

To make a full solid model from the provided class A surface of coin holder.

INTRODUCTION:

CATIA:

It means Computer-Aided Three-Dimensional Interactive Application. It is computer aided designing software. This is software which is used to design 3D models with different workbenches.

CLASS A SURFACE:

It is surface which is made by the designer. It is aesthetic surface and usable outside futures are on this surface.

CLASS B SURFACE:

It is bottom side surface of class A surface. It is made by class A surface. It is formed with thickness distance from class A surface.

CLASS C SURFACE:

It joins the both class A and class B surfaces. This surface is equal to the thickness of the component.

TOOLING AXIS:

• Class A surface or part is used to manually analysis which is best for tooling and create the axis perpendicular to the product. It is called tooling axis. Mould is open and closed by this axis.

METHODOLOGY:

TOOLS:

1. Extract:

This comment is used to create the required surface again. Which means copy the surface again for next operations.

2. Un trim:

This tool is used to un trim the surface which means create the full surface of previous surface from current surface.

3. Trim:

This tool is used to cut and eliminate the unwanted surface.

4. Extrapolated:

This tool is used to increase the length of surface or area with the help of different option.

5. Offset:

It is used to create the same surface again in required distance.

6. Edge Fillet:

It is used to create sharp edges to round edges.

7. Boundary:

It is used to form the boundary lines on opened surface.

8. Sweep:

It is used to create the surface in required length from the profile.

9. Join:

It is used to join the separate surfaces and create the single surface.

10. Close (Part command)

It is used to create the solid part from closed hollow part.

11. Curve smooth:

It is used to change the smooth curve from tangency curve.

12. Fill:

Fill some gaps portion with this comment

13. Blend:

Two bounty lines used to fill the gaps by this comment.

14.Split:

It is used separate the surface with the help of another surface as cutting tool.

SURFACE A CLASS:

TOOLING AXIS CREATION:

• First create the class A surface and manually analysis and fix the direction of tooling.
• If the part has hole on the surface, we can directly take its perpendicular as the tooling axis because its most suitable for tooling axis. Carefully watch and take this axis with the help of all types of views.
• First created the point the surface Intersect line is created with the help of intersect comment an ZX plane. New axis system also created for plane reference.
• Then this intersect line is used to create the new lines on both wall lines. Then the both lines are used to create a bisecting line in tooling direction or it is zero degree drafting part, so we directly draw line through the line to form tooling axis.
• Change some appearance to this line like thickness, colour, dot lines. Finally, it is called tooling axis. It is published for frequent uses.

DRAFTING ANALYSIS:

• Go to insert < analysis< feature draft analysis.
• Compass is fixed on the tooling axis.
• Then we click on the surface it showing different colour. This colour is used to analysis the drafting value of surface with the help of analysis table.
• It is zero-degree draft component. So, we no need to take drafting analysis. If we take it will show zero-degree draft angle.

SURFACE B CLASS CREATION:

Following procedures are used to create surface B class.

1. Extract the required surface from give coin holder surface.
2. Un trim the surface
3. Extrapolate the untrimmed surface
4. Offset the extrapolated surface by 2.5mm distance
5. This process is used to create the base, side wall, Top wall, outer flanges surface individually
6. Trim unwanted surface
7. Apply required fillets with required dimensions. (Fillet value=class A fillet value + or - Thickness).
8. Finally, we got surface B class.

SURFACE C CLASS CREATION:

1. Boundary is used to create the boundary lines on side edges of class A surface
2. Sweep command’s with reference surface option is used to extrude the created boundary lines in 90 degree.

FINAL PART:

1. Join command is used to join the surface A class and the surface A, C class
2. Trim commend is used to trim class AC and B. They join themselves.
3. Finally, we got hollow product.
4. In part bench close commend is used to get the solid model
5. We give different colours to appearance and easily analysis different parts.

DRAFTING ANYLYSIS:

If we want, Again, Same drafting analysis procedure is used to analysis the drafting angle. But it is zero-degree drafting component. So, no need to take drafting analysis. But we take and show its draft angle clearly.

CONCLUSION:

Different commends are used to create the surface A class, B class, C class. Then join and convert the solid. Finally surface B, surface C and solid product of coin holder is created from provided class A surface by CATIA software.