DESIGN DRAFT ANALYSIS COIN HOLDER

AIM:-

To make a solid model from the given class a surface an making a draft analysis using CATIA.

INTRODUCTION

CALSS A SURFACE:- A surface created by the designer and handed to the plastic modeller to

work on It is the aesthetic surface as well as the outermost surface.

CLASS B SURFACE: A surface with a thickness less than a specific value from the class- A

surface is a surface of class B. This is the surface of a model that comprises engineering

characteristics.

CLASS C SURFACE:- The Surface joining class A and B surface to form a solid model.

METHODOLOGY:

The concepts used in the model are as follows:

1. Tooling axis
2. Draft analysis
3. Class-B surface
4. Class-C surface
5. Making a solid model from surface.

CATIA Tools used in this model are:

1. Extract
2. Un-trim
3. Trim
4. Extrapolate
5. Offset
6. Edge fillet
7. Boundary
8. Sweep
9. Join
10. Close (part design)

FOR DRAFT ANALYSIS

• We analyze the model first, then select dummy axes in the x and y directions.
• As we intersected to continue, we saw that the side walls had no draft. As a result, we suppose the axis is parallel to the side walls and normal to the base surface. This will undoubtedly cause issues because a minimum draft must be given.
• Because the class-A surface is created by another designer, only he has the authority to make modifications, we examine it to finish the coin holder for practice.
• Then we to insert to insertà analysisà draft analysis and perform the analysis as normal.

Align the compass and click on the surface; the model is predominantly red, indicating a negative draft with regard to the axis.

• To rectify it as best we could, we moved the compass around until most of the surfaces were green and locked that position.
• After clicking OK, we shift the orientation of the line from the z axis to the compass direction. The axis will adjust itself accordingly.

Note Because the side wall does not have a draft, this outcome was predicted, and just a few spots require modification. However, we are continuing to work on the model.

FOR CLASS-B SURFACES

1.We separated the complete model into base, side walls, inner side walls, and outside flange and worked on each one separately.

2. We use the same process everywhere: extract, un-trim, extrapolate, trim, and offset.
3. Begin with the base, then go on to the side walls. To minimize confusion, we trimmed both and combined them into one. The fillet was also provided.

4. Next, we will look at the inner side flange. Instead of extract and un-trim, we utilized multi-extract and extrapolated it.

5 We use a similar technique for the outer flange. Following all of this, we have a basic sharp model.

6. We then trim all of them to make them one.

7. we fillet the surface after measuring numerous fillets. Remember to keep the f at a minimum.

FOR CLASS-C SURFACES

1. Unlike previous models, we employed a parallel tooling axis in this model. As a result, we are unable to use the 'with draft direction' option under sweep.
2. The C surfaces will be primarily generated in the manner illustrated below
3. In this case, we will first obtain the boundary of the class-A surface and then sweep it with the reference surface option.
4. Similarly, we will obtain the C surface for the hole in order to seal it.

FOR FINAL MODEL

1. Join class-A and class-C surfaces together.
2. Then join class-B surface to them.
3. Go to the part design and close the feature.
4. Run draft analysis on the model

TREE STRUCTURE:

CONCLUSION

Given surface A surface is converted into a solid model with a thickness of 2.5.