Door Arm Rest Week

Door Armrest

Aim :- The Main objective is to perform a draft analysis and make into a solid particle the given CAD model.

Procedure :-

• Open the CAT part, for doing the operation of draft analysis.

• Select file click ok, and open the CAT part.

• Before doing the drafting analysis, make sure that the whole part is joined or not.

• If it's not joined properly. First join it properly.

• After the whole part is joined, then start the draft analysis.

• Take the center point of the circle.

• Take the line and draw the line with the help of circle intersection and point with reference.

• Drag the line in z - axis.

• Click on the intersection icon and take the xz- axis and press enter button.

• Then the xz planes will be shown very properly.

• After taking xz planes, then check yz planes in the same way for bisecting the axis line with help of either sides of lines.

• Before going to make a solid body, extract the sub elements of a given element.

• For easy understanding make the sub elements into different colors.

• After taking the sub elements extract it for making into correct structure

• In the above figure, sub elements are extracted. After extracting the extra elements should be trimmed with help of a trim tool.

• Extrapol has to be added to combining the elements.

• One side of sub elements is removed, extracted and trim the extra surface made into a proper sub element.

• After completing the one side, the other side also has to do the same operation.

• After doing some operations on the other side it also forms into a proper form.

• After completing the sub elements to be untrimmed.

• Select the sub elements and make it offset of 2.5 mm distance in z direction.

• After combining the both sides of the element interacting on either side.

• Trim the planes which are interacting on either side.

• Boundary sections should be extrapolated on either side and back side of the element.

• After the trimming the extrapolated part, class B element should be made as class A surface.

• Convert the sharp edges into fillet.

• Make class C surface with help on class B surface.

• Select the class B surface and select the offset icon to make the offset of 2.5mm.

• With the help of class A surface we have to extract the upper layer and side layer.

• And exprolate the two planes with the help of extract lines.

• To exprolate the planes, select the edge plane to increase the surface.

• After that trim the extra surfaces which are interacting with each other.

• Offset the surfaces of both planes after that only trim surfaces forming the extra planes.

First surface :-

• After trimming the extra surface top surface is formed properly.

• First surface consists of the top surface and side surface.

• To combine properly, give the fillet by measuring with the help of class A surface by extracting the fillet surface and unitrim the extract part.

• Measure the edge of the extracted part and the fillet value is in radius.

Second surface :-

• After trimming the extra surface top surface and back surface is formed properly.

• Second surface consists of the top surface and back surface.

• To combine properly, give the fillet by measuring with the help of class A surface by extracting the fillet surface and unitrim the extract part.

• Measure the edge of the extracted part and the fillet value is in radius.

Middle layer :-

• Middle layer is a little bit complicated.

• Middle layer consists of three parts.

• First part is situated in the back side.

• Second part is on the top surface. Combine the top surface and back surface part. With help of blend command.

• Take a point on the top surface in inclination. Draw a line with point - point direction, pick the point from the top surface edge and another point from the line.

• Take a point on the back surface in inclination. Draw a line with point - point direction, pick the point from the top surface edge and another point from the line.

• Draw a curve smooth from top surface edge point to back surface edge point.

• Take the blend command, select the guide line then select the intersecting line.

• Holding surface should be made. Extract the planes from class A surface and exprolate the planes.

• Trim the extra surfaces. Make a clear object.

• Give the fillet for the entire object with proper measurement.

• Intersect the class A surface with class B surface.

• Take spine command, apply on the total object to intersect with surface B.

• Trim the extra surface.

• Select the boundary of class A surface and draft line.

• With the help of guidelines, a sweep command is used to extract the element to join and make it as a single element.

• Unhide the class B surface and join with class C surface.

• Trim the extra surface which is under the element.

• After trimming the surface element looks like as shown in figure below.

• Make the element into solid form with the help of surface command.

Draft analysis :-

• Make the draft analysis on the element. If any sharp edges are there modify it.

• After analysis make the element clearing the edges.

• Each and every side should be cleared.

• Make it a clean surface.

Tree structure :-

Result :-

The draft analysis and tooling axis is created and the model created and checked, there are no errors in the model.