TOOLING AXIS CREATION AND DRAFT ANALYSIS FOR FAN COVER

TOOLING AXIS CREATION AND DRAFT ANALYSIS FOR THE GIVEN CLASS A SURFACE (FAN COVER)

OBJECTIVE

The objective of the project is to create the tooling axis for the class a surface and to perform draft analysis

INTRODUCTION

The Draft allows the part to easily eject from the mold. The draft angle is to reduce friction between the core, cavity and part and it also avoid the damages. The minimum draft angle is 0.5 degree and the most common draft angle used in the plastic design is 3 degrees.

 In CATIA the draft analysis is performed based on colour ranges identifying zones on the analysed element where the deviation from the draft direction at any point, corresponds to specified values.

Tooling direction is the main element that to be consider while designing a plastic component. In moulding machine the arrangement is given to open the mould along the direction. It is the direction in which the core and cavity opens.

GIVEN CLASS – A SURFACE (FAN COVER)

PROCEDURE FOR TOOLING AXIS CREATION

• First the connectivity between the surfaces to be checked, by using the join option see how the surface is connected and ensure that there are no surface gaps in between the component.
• The other method to check connectivity is using the boundary option. By Extracting and disassemble the boundary of the class – A surface we can check visually gaps between the surface.
• Create a boundary for the hole in the fan cover. Using Circle / Sphere / Ellipse centre option create a point w.r.t the boundary. Create a line using point – direction(z) option that line is dummy tooling axis.
• Insert an axis system ensure that is not in current.
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• An intersection sketch is made using the ZX plane and the class a surface
• By using the point – point line option extend the line along the sketch. With the bisecting line option selecting the two line the TOOLING CLEARING X DIRECTION is created

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• Same steps are followed for crating TOOLING CLEARING Y DIRECTION, but here ZY plane is used to create the intersection line.

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• Now we have two tooling clearing axis X and Y using Bisecting line option create a line which our TOOLING AXIS.

PUBLICATIONS

TOOLS - PUBLICATION

Publication is done because It can be easily visible and can be easily accesable while performing further operations

Select the fan cover (Class A Surface) and the tooling axis and select publish 

DRAFT ANALYSIS

• For plastic parts the Nominal draft angle is 3deg, but even 7deg is allowed for the subassemblies like ribs and slots
• INSERT - ANALYSIS - FEATURE DRAFT ANALYSIS
• First the compass is moved to the part (the compass sholud be placed on the tooling axis) which used to define the new current draft direction, then lock the draft direction using the lock icon
• The colour chart indicates the various condition of the draft angle . the green colour indicates that the part passes and the and can be used for the further operations 
• By using the analysis under the running point icon we can check draft angle at the various surfaces of the component 
• There are two modes in the Draft analysis quick mode and fully detailed mode 

The compass is placed on the tooling axis and locked

draft analysis on various surfaces using the analyse under the running point

Detailed draft analysis mode

STANDARD VIEWS

Feature tree

CONCLUSION

Thus the DRAFT ANALYSIS is carried out by tooling axis for the given class - A surface (FAN COVER) and it is ready for the further operations