Challenge

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

SShubhankar Magade21 Jun 2023

CATIA

DOOR HANDLE

REQUIRED OUTPUT

CLASS A SURFACE

CLASS B SURFACE

CLASS C SURFACE

STEPS

01. Opening the CAT.PART in CATIA V5 the door handle.

02. Offsetting the Door Handle about 2.5mm inside. This will create Patches in the part which have being offsetted.

03. There are two approaches to solve the patches in design.

a. Using Multisection Surface nad solving the patch in the design.

b. To solve this patch i have used the standard method for solving the patches in the design. Removing all the edges from the design and creating boundary and further Extrapolating the Surface. Using the Trim operations to trim the extra surface which is not in use. And lastly using Edge fillet to give fillet to the corners.

04. For crating the Ribs, i have simply selected the plane and Positioned Sketch where i have simply drawn a single Line.

05. After exiting the sketch. I have Extrude the line for about 12.5mm. Height of rib = 5 * T (Thickness of the component) = 5 * 2.5 = 12.5mm.

06. Exiting the Generative Shape Design and switching to Part Body Design. Using Thick surface command from surface based sketch and giving thickness of about 1mm.

Thickness = 40% 0f thickness of component = 0.4 * 2.5 = 1mm.

07. For merging with the main component we have used Union Trim option to attached to the Final main body.

08. Giving the Draft to the phases of the ribs as for the smooth removable operations from the mould. Draft angle about 0.5degree.

09. Designing the Screw bosses are simple, firstly we have selected the proper plane and positioned sketch. Drawn two circles and given dimesns and exitted the sketch.

10. Defining the Part body and extrude the screw boss sketch circles. Repeating the same method twice to obtain the second screw boss.

11. Using Union Trim operation to attache the screw bosses to the final main body

12. Giving the draft of about 0.5 degree to the two screw bosses.

FINAL BODY OPERATIONS