Basic Concept

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Training Material

Basic Course

- Basic Concept -

March, 2007

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©1998-2008 INUS Technology, Inc. All rights reserved. rapidformXOTM User Guide & Tutorial

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rapidformXOTM Redesign Training 2

1. Overview 1.1 What does this exercise cover?

Step1: Region Group You can separate regions of mesh data with similar curvature area automatically.

Step2: Main Body From the mesh sketch, you can create solid body. Furthermore you can create freeform surface from region and cut solid body with surface.

Step3: Cut Body I You can get section segment and automatically create 2D sketch and extrude it with cutting option to make upper window feature.

Step4: Cut Body II You can create 2D sketch by using constraint sketch entities and extrude it with cutting option to make lower button feature.

Step5: Fillet To round edge you use Fillet command. The constant fillet and variable fillet options are applied on the body edges.

Step6: Accuracy Analyzer To analyze the result, you can check the deviation between original mesh and created solid body. The allowable deviation areas are colored with green.


2. Process 2.1 Step1: Region Group 1 Import File

You can import mesh data using Insert > Import. Select the Basic_Concept.stl file.

2 Region Group Click the (Region Group) on the toolbar to enter region group mode. Click the

(Auto Segment) and click the OK button. XOR automatically separates similar area as colored regions.

3 Exit Region Group Mode

Click the button at right bottom corner in the graphic area to exit Region Group mode.


2.2 Step2: Body Modeling 1 Mesh Sketch

To draw a base sketch of mesh data click the (Mesh Sketch). Select a Frontplane and move the blue arrow to where you want to get the section segment.

2 Base Sketch Draw a line and 3 arcs on the segments (pink line).

3 Fillet Click the (Fillet) and fillet between a line and arc.

4 Trim Click the (Trim) and select Conner Trim method. Click each arc in the graphic area.


Exit Mesh Sketch mode.

5 Extrude Click the (Extrude) and select Sketch 1 in the Feature Tree as Base Sketch. Set method to Up To Region and Sub Method to Trim With Region Fit Surface and select the top region of mesh.

Note: When you extrude a sketch there are seven methods;

Blind

Up To Region

Through All

Up To Surface

Up To Vertex

Up To Body


Mid

Plane

6 Edit Mesh Sketch As you see the lower side of mesh, it is not an extrude shape. So let’s edit a sketch.

Double click the Sketch1 (Mesh) in the Feature Tree.

Remove the bottom arc and draw a line. Connect arcs and a line as shown in the image below;



Note: If you want to check the connection of sketch entities click the (HighlightDisjoined Ends) and XOR detects discontinuity in sketch and highlights the respective points.

7 Mesh Fit Surface

Click the (Mesh Fit) or Insert > Surface > Mesh Fit to create surface from a region of mesh data. Select a lower side region and click the OK button.

8 Cut You can cut solid body with the surface created in the above process. Click the (Cut) or Insert > Solid > Cut. Select Mesh Fit 1 as Tool Entities. Select Exturde1 as Target Bodies.

Click the (Next Stage) and select the remaining body (left bigger part in the image below) and click the OK button.


Note: To hide surface entity, click the Mesh Fit1 under the Surface Bodies in the Model Tree.

2.3 Step3: Cut Body I 1 Add Ref.Plane

Hold Ctrl button on the keyboard and drag the Front plane to simply add a new plane.

Note: The above method of creating a plane is same as offset method in Insert > Ref.Geometry > Plane.

2 Mesh Sketch To draw a base sketch of mesh data click the (Mesh Sketch). Select Plane1 that was just created from above process as Base Plane. Move the blue arrow toget upper feature’s section profile. Click the OK button.


3 Adjust Segments Move the slider of Resolution to the left in the Segment Section Polyline to adjust the segment of extracted section polyline as shown in the image below;

4 Auto Sketch Click the (Auto Segment) and select only the necessary segments. Click the OK button. Arcs are automatically created from segments.


5 Extrude Cut Click the (Extrude) and select Sketch2 in the Feature Tree as Base Sketch. Set method to Up To Region and Sub Method to Trim With Region Fit Surfaceand select the inner window region of mesh. Check Cut option to cut off the intersecting profile between the bodies.


Click the OK button.

2.4 Step4: Cut Body II 1 Mesh Sketch

Click the (Mesh Sketch). Select Plane1 as the Base Plane. Move the blue arrow to get the lower feature section profile and click the OK button.


2 Add Line Click the (Line) button and draw 2 lines on line segments.

Note: When you adjust resolution of segments, XOR shows pink segment as line and yellow segment as arc.

3 Constraint Select two lines using Shift button on the keyboard and double click on them, so that the Constraint dialog tree appears. Click the Fix button.


4 Add Arc Click the (3 Point Arc) button on the tool bar and draw an arc as shown in the image below;

5 Constraint Select a line and arc together and double click them. Click the Tangent button to set tangent constraint between a line and arc.


In the same way set tangent constraint on opposite side. Adjust arc radii by dragging an arc to fit on the arc segment.

6 Add Line To make closed loop add a line and connect them.


7 Extrude Cut Click the (Extrude) and select Sketch3 in the Feature Tree as Base Sketch. Move the blue arrow to the lower feature region. While moving the arrow, its snaps onto regions for user convenience.



8 Mesh Sketch

Click the (Mesh Sketch). Select Plane1 as the Base Plane. Move the blue arrow to get the cylindrical feature’s section profile and click the OK button.

9 Add Circle Click the (Circle). Create circles from arc segments.



10 Extrude Cut Click the (Extrude) and select Sketch4 in the Feature Tree as Base Sketch. Move the blue arrow to the lower feature region. While moving the arrow, its snaps onto regions for user convenience.



2.5 Step5: Fillet 1 Constant Fillet

Click the (Fillet) on the toolbar or Insert > Modeling Feature > Fillet. Select an edge and click the (Calculate Radius With Mesh Data) then XOR automatically calculates fillet radius of mesh. The value could be about 1.06mm and we can guess the designer’s intent of fillet radius as 1mm. So change the value to 1mm.

Click the (Add) button to add constant fillet with 0.5mm and select the following edges.


2 Variable Fillet Click the (Fillet) on the toolbar or Insert > Modeling Feature > Fillet. Change option from Constant Fillet to Variable Fillet. Select the following edges;


Select Edge2 in the Fillet dialog box then Edge2 is highlighted with violet color in the graphic area.

Click the midpoint of yellow line and drag it to higher position in the Profile View and set P is 50% and R is 3mm (you can edit these values by clicking the value in the Profile View or graphic area). P means the position and R means radius of fillet. The fillet radius is changed as your settings in the graphic area.


3 Final Model The final model will be like the image below;


2.6 Step6: Accuracy Analyzer 1 Accuracy Analyzer Tab

Click the RMB (Right Mouse Button) on the toolbar area and choose Accuracy Analyzer (TM).

2 Deviation Select Deviation button and uncheck Hide Allowable Tolerance to see the allowable deviation area with green.


Basic Concept

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