Week 9 - Attachment Feature Creation - Challenge 2

SCREW  BOSS  DESIGN

1.Thickness of the screw boss should be 0.6 times the thickness of the component

Thickness of the component = 2.5 mm

Screw Boss Thickness = 2.5 x 0.6 = 1.5 mm

Hence Outside Diameter = Inside Diameter + 2 * Screw Boss thickness

As Inside Diameter = 5.2 mm

Outside Diameter = 5.2 + 2*1.5 = 8.2 mm

2.Height to Inside Diameter ratio should be less than or equal to 3 

Height of the screw boss = 12 mm

Inside Diameter = 5.2 mm

Height to Diameter Ratio = 12/5.2 = 2.3 which is less than 3

3.Draft should be given as 0.5 degrees to both inner and outer side of the boss

4.Fillet radius for all the edges should be 0.25 mm

DOG  HOUSE  DESIGN

1.Doghouse wall thickness at the intersection of the part wall ( C ) should be 40% or less than the main wall stock ( T ). 

Main Wall Thickness - 2.5 mm

Thickness at the intersection of the part wall (c ) = 2.5 *0.4 = 1 mm

2.Height of  ( B ) should be between 3.0 – 6.0 mm

3.Draft Angle should be 0.5 Degrees.

DRAFT  ANALYSIS USING MAIN TOOLING AXIS

• Using insert command draft analysis tool has opened.

• By clicking on feature draft analysis two pallets opened. One pallet has necessary draft analysis commands and other one is color  range which shows the draft values range in form of color.

• Inside the draft analysis command window we have selected compass option to create a compass.

• We have drag the compass onto the component and aligned with the side core tooling axis and locked using lock command.

• Now by dragging the mouse pointer anywhere on the component and clicking on it will show us the required draft analysis.

• As per color scale minimum draft angle for all faces  should be 0.49 degrees or above that. Inside the color scale green shows draft angle 0.49 or above 0.49 degress. Red shows between 0 and 0.48 degrees. And blue shows negative draft angle. As per the above figure some faces are green and some are blue  hence our part has not  cleared the draft analysis. Screw Boss is clearing the draft analysis.

3D  VIEWS  OF COMPONENT WITH DRAFT ANALYSIS COLOR CODE

Isometric  view

Front  View

Side View

Top View

DRAFT  ANALYSIS USING SIDE CORE TOOLING AXIS

• Using insert command draft analysis tool has opened.

• By clicking on feature draft analysis two pallets opened. One pallet has necessary draft analysis commands and other one is color  range which shows the draft values range in form of color.

• Inside the draft analysis command window we have selected compass option to create a compass.

• We have drag the compass onto the component and aligned with the tooling axis and locked using lock command.

• Now by dragging the mouse pointer anywhere on the component and clicking on it will show us the required draft analysis.

• As per color scale minimum draft angle for all faces  should be 0.49 degrees or above that. Inside the color scale green shows draft angle 0.49 or above 0.49 degress. Red shows between 0 and 0.48 degrees. And blue shows negative draft angle. As per the above figure some faces are green and some are blue  hence our part has not  cleared the draft analysis. Dog House is clearing the draft analysis.

3D  VIEWS  OF COMPONENT WITH DRAFT ANALYSIS COLOR CODE

Isometric  view

Front  View

Side View

Top View