Week 8 - Challenge 3 - Coin Holder Design

NOTE: I have Attached the Report, Photos and CADpart in the Attachment

Week 8 - Challenge 2 - Coin Holder Design

AIM:

To Create the Coin Holder Design Plastic component through the given Class-A surface. Create the tooling axis for the given Class-A Surface by meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.

OBJECTIVE:

• Tree Structure
• Ensure Proper Tree Structure
• Geometrical sets should have a proper name based on the sketches present inside of it
• All the sketches should be created under the Geometrical set
• Use the Close Surface feature to make a solid body from the surface.
• Publications: Use the publication option and publish the below
  • Tooling Axis
  • Class A, B, and C surface
• Report
• A detailed report should be done explaining the draft analysis and the tooling axis creation.
• An explanation should be given on the way of creating the tooling axis, particularly the Bisecting method.

SOFTWARE USED : CATIA

INPUT:

CAD DATA is downloaded and Opened with CATIA.

TOOLING AXIS:

Tooling axis is defined as such all the featres of the part can be manufactured easily. so here we followed the below steps to create the tooling axis.

• Extract the base and create point at the center of the surface. create axis system on the point.

• Draw a intersection with the z and y datum to class a surface.
• Sketch a line at bisecting the faces of it.

• Draw a intersection with the x and y datum to class a surface.
• Sketch a line at bisecting the faces of it.

• The lines of the sketches 1 and 2 are bisected to get the main toolin axis. (It is 90 degree)

DRAFT ANALYSIS:

• Draft is done on the Class A surface.
• Change it to material in customise view.
• Click the Draft analysis tool and click the surface and align the compass to tooling axis.
• 3 degree is the clearing angle
• So here is photo of cleared (Green) draft.

Class A Defect :

There is minor defect in the Class A that has 0 degree on the edge of the fillet. Eventhough i tired various tooling axis angle i cannot clear this minor edge. If i change the tooling axis other than this major important faces pf the part will be under 0 degree. And i am not authorised to change the Class A surface too. So kindly consider.

B SURFACE:

• B surface is created by using the given Class A surface
• For making it easier we create the faces in groups.
• Inside side walls.
  
  • Extract the Inside side walls.

• Untrim the Extracted sides.

• Extrapolate the sides so that all the 4 faces touch eachother.

• Offset it to 2.5 mm Ouside

• Trim the faces and give fillets.

Base

• Faces are extracted from the class A

• The extracted faces are untrimmed

• The untrimmed faces are extrapolated for trimming accordingly

• It is trimmed as per the class A and offseted away from the class A.
• Requied fillets are given

Top wall

• Top wall faces are extracted

• It is extrapolated on both the sides after joining

• It is then offseted away from the class A for 2.5mm

Outer wall

• All the faces of the outer wall is extracted

• it is then joined and extrapolated as two parts

• It is then offseted within the class A 2.5mm

• Side walls and the top walls are trimmed to join

• Base and the wall is trimmed together.

• Outer wall is then trimmed with inside cup with reference to classs A.

• All the required fillets are given

C SURFACE:

• Class A boundry is taken.
• Sweep is done with reference to the boundry and the class A surface that forms 90 degree inwards.

FINAL PART:

• C Surface is trimmed splited with boundry and B surface
• Now join C surface , B surface and A surface.
• Thus the part is made

• Coin holder is made into closed body

DRAFT ANALYSIS:

• Draft is done on the Final Part.
• Change it to material in customise view.
• Click the Draft analysis tool and click the surface and align the compass to tooling axis.
• 3 degree is the clearing angle
• So here is photo of cleared (Green) draft.

Here are the photos of Coin holder