Door Arm Rest Week 8 Challenge

DOOR ARM REST.

The class A surface is provided to us. We need to create b surface and c surface and create a solid model. At the end we have to do draft analysis to check whether the component is manufactural or not.

Class A surface

Then we will randomly select the tooling axis. For making the selection first analyze the shape of the product and avoid side core as far as possible. Here we will take z axis as the tooling direction and mark a point there and create a datum axis in the z direction. Here the side core cannot be avoided because there are ribs which are present on the side faces and this will not clear in the z direction tooling axis. So we need to consider side core tooling axis.

DUMMY TOOLING AXIS.

Next step is to take the intersect of the class A surface and the XZ plane

INTERSECT IN THE XZ PLANE.

Next obtain the tooling axis for the y z direction by following the same steps. Take the intersect of y z plane. Identify the faces which are parallel to the dummy tooling axis.

YZ TOOLING AXIS.

Now we have to perform the draft analysis in the required tooling direction.

DRAFT ANALYSIS IN THE TOOLING DIRECTION.

When there are inner and outer holes or under cut on the plastic part that are different form the mold opening direction usually a side core is used. Here also to clear the ribs we need to have a side core. So side core tooling axis is created and draft analysis is done in that direction.

SIDE CORE TOOLING AXIS.

DRAFT ANALYSIS DONE ON THE SIDE CORE.

B SURFACE CREATION

Now we have to create B surface which is the engineering surface. All the features like holes emboss are created on the B surface. For that we have to extra a surface, extend it and then trim it and apply the required fillets.

CLASS B SURFACE.

The we have to create c surface. C surface is the surface which joins the A surface with the B surface.

Extrapolate the A surface and for the curved portions use multi section surfaces to create surfaces. Join both A and C surface.

CLASS C SURFACE CREATION.

CLASS A+C surface.

Trim both A+C surface with the class b surface. Then by using close surface command from the part workbench, turn the component into a solid.

FINAL TRIM SURFACE

SOLID MODEL

DRAFT ANALYSIS FOR THE SOLID MODEL ON THE TOOLING AXIS.

SIDE CORE TOLLING AXIS.