Week 9 - Attachment Feature Creation - Challenge 1

Aim:Create the rib for the Centre console coin holder considering the design rules.

PROCEDURE:

TOOLING AXIS:

• After analysing the component, the component features seems to be clearing the tooling in Z-axis(perpendicular to base).
• Usually, a perpendicular axis to large flat surface or hole is considered as a tooling axis.
• Extract the base and create a line with point and direction perpendicular to the base.

PROCEDURE:

• Draw a line on the base surface of the coin holder with using portion sketch.
• Construct the line with using axis. and extrude the this line and add thicknig for this surface.
• add thickness of the rib 0.4*thickness of the component 
• Coin holder thickness is 2.5mm. so consider the rib thickness is 0.4x2.5 = 1mm
• Give the draft angle is 0.5 degrees for the rib.
• Give fillet of 0.25mm. Maximum fillet radius must be 0.25mm.
• Then translate this rib. The spacing guideline is such that the Hight/Width ratio should be maximum of 3:1, 2:1 is preferred.

below figure we can see the measurements of the ribs satisfying the design rules.

Draft Analysis for the Rib:

• Draft Analysis of the coin holder with ribs attached.
• In below figure we can see the 0.5 degree draft on the rib face.
• The green surfaces are having draft angle of more than 3 degrees and they can clear the tooling direction.
• The red surfaces are having draft angle more than 0 degrees and less than 3 degrees.
• The blue surfaces are having negative draft angle. As the Class A surface is not manufacturable, the same problem can be seen in the solid part. The Class A surface has to be modified and the walls should have some positive draft angle.

Orientation:

Tree Structure: