Week 8 - Challenge 2 - Base Bracket Design

 Automotive Plastic Design using CATIA V5

Aim: To Create the Base Bracket Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface should be created meeting the requirements of the draft angle and at the end perform the Draft analysis on the model. 

Procedure:

• First import the surface or the CLASS A model to the CATIA V5.

• As the plastic bracket is a surface model we have to open it in the GENERATIVE SHAPE DESIGN which is observed in START << SHAPES.
• We have to check the Connectivity of the Class A surface which we have uploded.
• Ensure that there are no gaps between the surfaces on the class a surface.
• Now Identify the direction to create the tooling axis.
• After identifing the direction we have to create a Dummy tooling axis by creating a line along z diection , point and plane.

• Using the INTERSECTION command create the intersection along respective directions.

• Now, Observe the model and find out the surfacing which are creating the problems for Draft Analysis.
• Creat the supporting lines along the directtions by using the point to point option in line command.

• After creating the supporting lines,Create bisecting lines using the supporting lines.
• The bisecting line which is created will be the TOOLING AXIS.
• Finally the TOOLING axis is created and by using this we have to do the draft analysis on the surface.

• Before doing the draft analysis we have to set the material mood for the we have to change or customize the view parameters and select material.

• To do the DRAFT ANALYSIS we need to go to INSERT
• In Feature Draft analysis we have to first use the COMPASS option and define the new current draft direction.
• Set the DRAFT angle as 3DEG.
• LOCK the direction and analize the Draft under the running point on the surface .
• To ensure the draft is perfect just switch to quick analysis mood.
• Finally the draft analysis  on the Plastic Base Bracket is done.

• Now we have to Apply the thickness for the bracket or class A surface.
• For that first we gave to create a B surface in a new geometrical set .
• Observe the class A surface and find the the main surface apart frim the fillets. in our model we have 3 main surface those are the base surface, inclined surface and the ribs.
• Lets work on ribs first,
• Create a new geometrical set and name it as Rib 1 and Rib 2.
• Then extrace the surface from class A surface then un trim the ectracted surfaces , after un triming extrapol the surface and then trim the extra surface by comparing with class A surface 
• And finally off set the surface with the thickness of the model.

• Do the same for the other rib , base and inclined surface on the model.

• Now, we get the total surface by appling the fillets we get the B SURFACE fo the model ( be care ful when appling the fillets measure the class A fillet radius and add the thickness to it to get the equal distance between the surfaces)
• The B SURFACE is formrd after the fillets are given.

• Now, we have to create the C SURFACE, for that first we have to create a new geometrical set.
• From Class A surface select the boundries , and then use the sweep command to create the C surface ( in sweep select the sweep as with draft direction)
• We use the Tooling Axis which we have created earlier to create Class C surface.
• Make sure you give the draft anglr and draft direction corretly.
• Therefore, the C SURFACE is created.
• DO the same for Holes.
• Now join the Class A and C Surface .

• After joiningn A and C surfaces trim it with class B surface to get the Base bracket Surface model.

• Now, we have to form a solid model from the surface model. For that we have to move to part body and choose a commed called close surface and select the surface 
• Finally we get the solid model of the base bracket . 

VIEWS:

ISOMETRIC VIEW:

FRONT VIEW:

SIDE VIEW:

TOP VIEW:

TREE:

Conclusion:   Finally. we Created the Base Bracket Plastic component through the given Class-A surface. first we created  the tooling axis for the given Class-A Surface by meeting the requirements of the draft angle and at the end we performed the Draft analysis on the model.