Week 9 - Attachment Feature Creation - Challenge 2

AIM

To create the rib for the Centre console coin holder by using catia v5

SOFTWARE USED

CATIA V5

DRAFT ANLAYSIS

Draft analysis in catia is a command that is used to detect if the part you drafted will be easily removed from the mold. it is performed based on color ranges identifying zones on the analyzed element.

Most of the industries is using minimum draft angle is 3 degree

PROCEDURE

• Check all the boundary whether it has connected or not.
• Check the model visually & choose the best tooling direction which should be easy for draft.

• After analyzing the above model the best tooling axis is y direction.

CREATING THE TOOLING AXIS

• Create a point 1 and insert a axis system on the point 1 as shown below

• Create a intersection on XY plane for the given surface

.

• Since a surface is 90 degree to the axis system, so create a point -direction line parallel to the y axis and named as TOOLING AXIS as shown below

Creation of second tooling axis

• Create a line using point direction along z direction

PERFORMING DRAFT ANALYSIS ON MODEL

• To perform draft analysis open customize view parameters and choose the material

• Insert a feature draft analysis by following these commands

I insert>analysis>feature draft analysis

• Align the compass on tooling axis that we created
• Open the color scale and enter the value is 3 deg.
• If the whole body is green that all the faces is greater angle than the provided angle

DRAFT ANALYSIS REPORT OF CLASS A

DRAFT ANALYSIS REPORT OF SOLID MODEL

ANALYSIS ALONG SIDE TOOLING AXIS ON DOGHOUSE

CREATION OF SCREW BOSS

• Extract the surface that we going to create a screw boss
• Insert a axis system. use positioned and draw a screw sketch

BY USING DESIGN RULE

Take diameter of the hole = 5.2mm

Thickness of the screw boss=0.6t=1.5mm

Height of the screw boss=3:1

h/d=3/1

h=3*5.2

h=15.6mm

• Use pad command the sketch to the height of 15.6mm
• Draft the screw boss of minimum of 0.5 degree
• Add fillet 0.25mm to all faces
• Assemble the screw boss to coin holder solid

CREATION OF RIB

• Extract the surface that we going to create a rib
• Insert a axis system. use positioned and draw a rib line

By using Rib rules

THICKNESS OF THE SURFACE = 2.5mm

Thickness of the rib=0.4*t=1mm

Depth of rib=5*t=12.5mm

Spacing between two rib =2:1

y/x=2/1

x=12.5/2=6.25mm

• Extrude the line upto 12.5mm
• Use thicken surface and create a rib solid for 1mm
• Draft the rib of minimum of 0.5 degree
• Add fillet 0.25mm to all faces
• Assemble the rib to coin holder solid.

CREATION OF DOG HOUSE

• Extract the surface that we going to create a dog house
• Insert a axis system. use positioned and draw a dog house sketch
• Sweep the sketch to 1.5 degree on the direction of main tooling axis

• Add thickness to the above sketch of 2mm by using thicken surface

Dog house rule

B=4mm

t=2.5mm

C=0.4 * t=1mm

• Extract the sweep and offset to b=4mm and c=1mm on all directions like the below

• Trim the portion to get the required sketch
• Draft to 0.5 degree along second tooling axis
• Add fillet to all faces
• Assemble the doghouse to coin holder solid
• Translate the screw boss by using coordinates

MODEL IN VARIOUS ORIENTATION

CONCLUSION

Thus the 3D model has been created using catia v5.