Week 8 - Challenge 2 - Base Bracket Design

                                                                               Base Bracket

AIM :

            To create the base bracket plastic component through the given Class-A Surface by using CATIA.

Procedure:

1.  CLASS A SURFACE :

          The class a surface is an initial process to bring the plastic component design from scratch to mass production. The class a surface it has no thickness. The Class A surface is used for the aesthetic surface of a product. From Class A surface the solid model is created.

Procedure for Class A:

• The initial step is to import the CATIA file from the sketch designer.
• After importing the file the first step is to ensure that the Class A surface is connected. It can be ensured in two methods.   

1. By using the join command             
2.  By using boundary command.

  B. TOOLING AXIS : 

The tooling axis is a direction to open the mold open or close or the cavity and the core to open and close.  The tooling axis is used to create the draft analysis. Most of the designers will choose the hole in the surface or the flat surface to choose as a tooling axis point. The choosing plane in the tooling axis point main criteria is to clear all the faces on the surface. The tooling axis is to create because the parallel faces in the surface which make trouble in the drafting to avoid the intersecting lines have been creating.

PROCEDURE FOR TOOLING AXIS :  

The first step in the tooling axis is to whether the hole or the flat surface is to choose for the tooling axis. 

In the part, the holes are in there to create axis points. So we can make it a hole surface.  

After choosing the flat surface the X, Y, Z which direction meet all the faces have to check.  

In this part, the Z direction gives all the faces of the diagram. 

  B. TOOLING AXIS : 

The tooling axis is a direction to open the mold open or close or the cavity and the core to open and close.  The tooling axis is used to create the draft analysis. Most of the designers will choose the hole in the surface or the flat surface to choose as a tooling axis point. The choosing plane in the tooling axis point main criteria is to clear all the faces on the surface. The tooling axis is to create because the parallel faces in the surface which make trouble in the drafting to avoid the intersecting lines have been creating.

PROCEDURE FOR TOOLING AXIS :  

The first step in the tooling axis is to whether the hole or the flat surface is to choose for the tooling axis. 

In the part, the holes are in there to create axis points. So we have to make it a  surface.  

After choosing the flat surface the X, Y, Z which direction meet all the faces have to check.  

In this part, the Z direction gives all the faces of the diagram. 

                  

The next step is to create the bisecting line for the ZX direction. 

• With the two-axis line, the bisecting line has to be created for the TOOLING AXIS  in the point direction.
• We have to check by clicking the line in the tooling axis line and the normal view icon it shows the created tooling axis which shows all the faces. 

     

CLASS B SURFACE :

The B  surface is created by thickening the A surface. The A surface has no thickness. The B Surface is for Engineering purposes. To thicken the A surface.    

PROCEDURE FOR B SURFACE :

• To create the B surface the A surface has to extract and been offset the surface.
• The rest arm of the surface is to extract from the A surface and then untrim the face and the extrapolrate. 
• By doing the same procedure the Walls of the A surface have to be done.
• After extrapolating according to the A surface, it has to be trim.  

                 

                                                                        Class B Surface

CLASS C SURFACE

  The class c surface is to create join the A surface and the B surface.

Procedure for C surface :

• The procedure for the C SURFACE is to create multiple extracts or the boundary of the outer surface from Class A.
• For the above-given surface, the A surface boundary has extract from the A surface and then make a smooth curve.
• After making a smooth curve we have to go to sweep command then the draft direction has to give at an angle of 3deg.

                                   

                                                               Class C Surface

                            

                                                                     Final Trim

FINAL TRIM :

After creating the CLASS A B C surface the final trim process is to be taken to complete the process.

The first step is to join the CLASS A surface and the CALSS C surface.

DRAFTING ANALYSIS

Drafting analysis is used to make the product in taper or minimum angle to avoid the damage of the product. when the product is on a flat surface it may make wear and tear and to avoid friction shrink and use for the ease ejection. 

PROCEDURE 

• From the tool command, the analysis it has to choose then the draft analysis is to be done. 
• The draft analysis dialog box will display on the screen 
• The first step is to use the compass and lock the compass in the tooling axis which we created.
• Then use the lock icon to lock the compass 
• Then with the help of the running point check the angle of the component is below r above 3 deg.

                         

Result :

THE Base Bracket is achieved on basis of the mold processing standards.