Week 8 - Challenge 1 - Base Bracket Design

AIM: Create Base Bracket Plastic through given Class A Surface. To perform the draft analysis on model.

PROCEDURE:

• First of all check the gap if there is no gap between the surfaces by using boundary command.
• After that create a point using circle/sphere/ellipse centre option. Create a line using direction Z option.
• Create a plane with point created before and yz plane.
• An intersection sketch is made using YZ plane and the class A surface.
• By using a point-point line direction create a line along the sketch both the sides. Then bisecting selecting the two line the tooling axis is created.

TOOLING AXIS

• Its basically the direction that mold pulls apart. Its is built in two separate pieces, basically. You have a cavity side and core side. There are different method to find out the tooling direction. Her I used bisecting method ro find out tooling direction.

DRAFT ANALYSIS AND PROCEDURE

• Draft Analysis Draft analysis helps to detect if your drafted part is easily removable from the mold (in case of plastic component) or die ( in case of plastic component). All plastic component should be minimum draft 3 degree
• Normal draft angle is 3 degree but 7 degree is allowed for the subassemblies like ribs and slots.
• Insert- analysis- feature draft analysis.
• First the compass should be placed on the tooling axis. check it align with model or not then lock the draft direction using lock feature.
• Color chart indicates the various condition of draft angle if show shows green then my part passed and can be ready for manufacture.

CREATE CLASS B SURFACE

• Extract the both side and top surface of first rib with no propagation Then untrim one by one and hide the extract.
• Extrapolate all the untrimmed surfaces one by one.
• Now trim the first and second surface then trim trim 1 with third surface.
• Offset the surface for 2.5mm downward
• Repeat the same process for ribs 2.

CLASS C SURFACE

• Boundary the class A Surface as well as for two holes.
• Sweep (Draft with direction) boundary one by one by tooling axis with only 3 degree draft angle.
• Using join option to combine all the swept surface.
• Trims the joined surface with the Class B Surface to form Class C surface.

PUBLICATIONS

• Tooling axis – publication
• Select the base bracket (Class A surface)
• Sweep (Draft with direction) boundary one by one by tooling axis with only 3 degree draft angle.
• Using join option to combine all the swept surface.
• Trims the joined surface with the Class B Surface to form Class C surface.