Week 10 - Challenge 1- Attachment Feature Creation (Ribs & Screw Boss)
AIM:
. To create the Door Handle Component from the given Class -A surface.
. To Create the tooling axis for the given Class-A Surface meeting the requirements of the
draft angle
. To Attach B side Features in the component.
. To perform the Draft analysis on the model.
DESCRIPTION:
1. CREATING TOOLING AXIS-
The tooling direction is basically the direction that the mold pulls a part. The mold is built in
two seperate pieces, basicall. 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.
. Check for gaps between surfaces for that click on join and then preview.
. If theres any gap between the surfaces join them with a maximum tolerance of 0.003 mm.
. Extract the boundry and dissemble the boundry.
. Find the correct tooling axis where the material don't interfere with the tooling axis and all
the elements can be created.
. Create an axis system using at the centre of the switch bezel.
. Intersect the yz plane wuth respect to the Class A surface.
. Hide the class A surface and create point to point lines on the suspected drafts.
. Create bisecting line with the two lines and point to create a tooling axis.
. BISECTING LINES were used to get the exact medium from the two sides so that maximus
positive draft angle can be achieved.
. The tooling axis is created for the component by bisecting two axis from x and y planes.
2. PUBLICATION
. Publication is done to the component to make it visible and navigate easily.
. To publish the component go to tools > publications and then select the tooling axis and
the class A surface
. A seperate tree structure is formed under the main part.
3. 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 color ranges identifying
zones on the analyzed element where the deviation from the draft direction at any point,
corresponds to specified values.
. Before going to draft analysis go to customized view parameters > under mesh > check
material and then click ok.
. Now for draft analysis go to insert > analysis> features draft analysis.
. Use the compass to define the draft direction.
. In the colour scale chnege the draft angle to 3 degree.
. The component changes to green in indication of passing draft angle.
. Use running point to check the angle on the component.
. The draft analysis is complete.
4. CREATING CLASS B SURFACE
. Extract the surfaces from the class A using multiple extract and untrim them.
. Use extrapolate to make sure that all the untrims are properly intersected to trim and offset
the surfaces to 2.5 mm to create the thickness.
. Trim the extra surfaces using trim command.
. Insert them into new geometrical set and name it with respective part names.
. Apply fillets to the model after creating the entire surface.
. If the edges are outside the fillet value will be added to the thickness of the component and
if the edges are inside, the fillet value will be subtracted from the thickness of the component,
for instance the thickness of the component is 2.5 mm the fillet value is 15 mm so the outside
portion value should be 17.5 mm and iner edge should be filleted 12.5 mm to get
uniform thickness.
. Performs trims one at a time so that it will be clear to understand.
5. CREATING CLASS C SURFACE
. Extract the boundry from the class A surface using boundry command.
. Using disassemble tool to divide the boundry as the boundry contains domains.
. Using the sweep command > choose profile type line > subtype as with draft direction> choose
guide curve and draft direction > draft angle as 3 degree > preview.
. After getting sweep then the trim 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.
6. B SIDE FEATURES CREATION
RIB CREATION
. Design Principle for Rib Creation
. Sketch Used For Rib Creation
SCREW BOSS DESIGN
. Design Principle for Screw Boss Creation
. Sketch Used For Screw Boss Creation
7. END DRAFT ANALYSIS
3D MODEL
CONCLUSION
. The tooling axis abd the SolidCAT part with B Side Features is created from the given Class
A Surface and Draft Analysis is Performed.