Week 10 - Challenge 1- Attachment Feature Creation (Ribs & Screw Boss)

Step 1: Creating Tooling Axis

The Tooling Direction is basically the direction that the mold pulls a part. The mold is built in two separate pieces, basically. You have a Cavity side and you have the Core side. The Core pulls apart from the Cavity and that's the Dye line or the Tooling Direction.

• Extract the boundary and dissemble the boundary.
• Find the correct tooling axis where the material doesn’t interfere with the tooling axis and all the elements can be created.
• Create an axis system using at the centre of extract by creating point on the surface on the extract.
• Intersect the yz plane with respect to the Class A Surface.
• Create bisecting line with the two lines and point to create a tooling axis.
• Bisecting Line were used to get the exact medium from the two sides so that maximum positive draft angle can be achieved.

Tooling Axis

Step 2: Draft Analysis

The Draft Analysis command enables you to detect if the part you drafted will be easily removed. This type of analysis is performed based on colour ranges identifying zones on the analyzed element where the deviation from the draft direction at any point, corresponds to specified values

• Before going to drat analysis go to customized view parameter >under mesh >check material and then click ok.
• Now for draft analyses go to insert » analysis » feature draft analysis.
• Use the compass to define the draft direction.
• In the colour scale change the draft angle to 3 degrees.
• If the component changes to green it indicates of passing draft angle.
• Use running point to check the angle on the component.
• The Draft Analysis is complete now.

Class A Surface Draft Analysis

Step 3: Creation of Class B Surface

• Offset the Class A Surface for 2.5 mm.
• Complete the Class B Surface using sweep and trim command.
• Apply fillets to the model after creating the entire surface.

Class B Surface

Step 4: Creation of Class C Surface

• Extract the boundary from the Class A Surface using boundary command
• By using Sweep command create C Surface.
• After getting sweep then trim the output with class B surface to get final output.
• Now open part design workbench and using close body surface create a solid of the component.
• Perform the draft analysis to check the component.

Sweep for Class C Surface

Class C Surface

Class C Surface Draft Analysis

Step 5: Creation of Rib

• Create the drawing for rib and give proper constraints to make it Iso-constraint.
• Extrude the rib for given thickness and use thick surface to make rib.
• Give final Draft value and fillet on the rib.
• Union Trim the Rib with the main body to get final output.

Rib Drawing

Step 6: Creation of Screw Boss

• Create the drawing for screw boss and give proper constraints to make it Iso-constraint.
• Pad the screw boss for given height.
• Give final Draft value and fillet on the screw boss.
• Assemble the screw boss with the main body to get final output.
• Perform the draft analysis on the final output.

 Screw Boss Drawing

Final Component Draft Analysis

Isometric View

Multi View