Challenge

Door Arm Rest Week 8 Challenge

AAnu Anilkumar19 Oct 2021

Objective:

1)To create B Surface and C surface of the given component at a thickness of 2.5 mm

2) To create a tooling axis for the above component .

3) To create a solid from the closed surface of the above component

4) To conduct draft analysis on the given component and solid .

Answer:

1) Draft Analysis

Draft analysis is done to ensure that the designed part is manufacturable based on the draft conditions applied. It is done to ensure the proper ejection of the component from dies(for metals) or molds(for plastics). The basic idea is to ensure that the tooling axis has to be created in such a wat that it has no parallel surface profiles of the component so that the ejection of the components can be ensured . Tooling axis is the axis along which cavity and core are closed and opened .

2)Procedure for creation of tooling axis using bisecting method .

Step 1: Import the model and check for surface continuity and connectivity using Join tool .Ensure there is no surface gap

Step 2: Insert a geometrical set . Exctract the base surface and create a point at centre of the hole using point on circle option from point tool. Look for suitable axis to create a tooling axis so that all faces clear tooling .

Step 3: Create an axis system without current option ticked at the above point. Create a position sketch with zy plane from axis system and above point as reference point.

Step 4: Use intersect 3d objects option from project tool to create 2 lines by selecting a suitable plane(zy). Now create 2 lines which coincide with lines on both sides of the projection point . Create a line using bisect option .Allign the line in required axis direction.This is our Y tooling axis .

Step 5: To create tooling axis about x direction, create a position sketch with xz plane as reference plane and projection point as the first point we created . Use cut section tool and create an intersection using projection tool . Now create a line that coincides with this line .

Step 6 : Draw a line from origin in horizontal direction and create and angle constraint. Use bisect option to create a line between that above lines . This is out X tooling axis .

Step 7 : Create a new line using bisect option between X tooling and Y tooling line . this is our required Tooling Axis , Name this as tooling axis and publish it .

Procedure to check for Draft analysis

1)Once the tooling axis is created , publish it and the component using Publication from tool option .

2)Insert Feature draft analysis option from insert tool bar

3) Change the view option to customize view parameters and click on material option under shading .

4) Now click on the axis option from Draft analysis tools , allign it with tooling axis and click on lock option to lock it .

5) Change draft angle value to 3 degree . Click on quick analysis mode to display feature according to given color scale . Check from all views to ensure the draft analysis is cleared .

6) Since the created tooling axis does not clear the draft analysis at the created axis , click on the lock axis button to unlock it . Now rotate the tooling axis by left clicking on the top round portion of the axis system . Rotate the axis till maximum clearance is obtained . Now right click on the axis and click lock current axis .

7) Create a line using the initial axis origin and this axis using point and direction (using compass direction) option . This is our required tooling axis .

8) Now if we check for draft analysis, we can observe that the ribbed area has not yet cleared draft analyisis. Hence we need to create a side core tooling axis . To do this , create a line using point and direction option with Y direction .

9) Repeat steps 1 to 5 to ensure the remaing portion which was not cleared using Tooling axis has been cleared using this axis .

Hence we have created tooling axis as well as side core axis .

Draft Analysis images for CLASS A Surface .