Tài liệu Unigraphics nx8 - associative copy

[NX8-HELP] ASSOCIACTIVE COPY 1 Associative Copy View a topic Pattern Feature Mirror Body Extract Body Instance Geometry Composite Curve Promote Body Mirror Feature Instance Feature 1. Pattern Feature Use the Pattern Feature command to create patterns of features (linear, circular, polygon, etc.) with various options for defining pattern boundaries, orientation of instances, clocking and variance.  You can create pattern features using a variety of pattern layouts. Linear Polygon Along Circular Spiral General Reference  You can fill a specified boundary with a pattern feature.  For a Linear layout, you can specify a Symmetric pattern in one or both directions. You can also specify to Stagger columns or rows. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 2  For a Circular or Polygon layout, you can choose to radiate a pattern.   You can define a Pattern Increment by using expressions to specify pattern parameters. You can export pattern parameter values to a spreadsheet and make positional edits that are propagated back to your pattern definition. You can explicitly select individual instance points for clocking, suppression and variance of pattern features.   You can control the orientation of a pattern. Orientation same as input Orientation follows pattern (circular)  You can choose between Simple and Variational pattern methods. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 3 Where do I find it? Application Modeling and Shape Studio Prerequisite History mode Toolbar Feature→Pattern Feature Menu Insert→Associative Copy→Pattern Feature 1.1. Pattern Feature methods Simple    Simple design features such as holes and extruded features are supported. One input feature per output pattern. Multi-body features are supported. Variational         Associactive Copy All features which support copy-paste are supported. Detailed features such as blends and drafts are supported. Each instance of the pattern is fully evaluated. Works with multiple input features. Multi-body features are supported. You can reuse references to the input feature and control which references from the input features are evaluated at each instance location. Advanced hole functions are supported. Sketch features are supported. drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 4 1.2. Create a linear pattern of features in two directions This example shows you how to create a linear pattern of features in two directions. 1. Click Pattern Feature . 2. Select features to pattern. 3. In the Pattern Definition group, from the Layout list, select Linear . 4. Select an edge to define Direction 1. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 5. 5 In the Direction 1 section:    From the Spacing list, choose Count and Span. In the Count box, type 5. In the Span Distance box, type 145. 6. In the Direction 2 section, select the Use Direction 2 check box. 7. Use Specify Vector to define Direction 2. 8. In the Direction 2 section:    From the Spacing list, choose Count and Pitch. In the Count box, type 3. In the Pitch Distance box, type 55. 9. Choose another command or click OK to create the pattern. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 1.3. 6 Create a circular pattern of concentric features This example shows you how to create a partial circular pattern of features that are concentric. 1. Click Pattern Feature . 2. Select the features to pattern. 3. In the Pattern Definition group, from the Layout list, select Circular Associactive Copy . drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 7 4. Under Rotation Axis, click Specify Vector. 5. Specify a vector of rotation. 6. Specify a point of rotation. 7. Under Angular Direction:     Associactive Copy From the Spacing list, choose Pitch and Span. From the Define Pitch As list, choose Angle. In the Pitch Angle box, type 30. In the Span Angle box, type 270. drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 8. 8 Under Radiate:      Select the Create Concentric Members check box. Make sure the Include First Circle check box is selected. From the Spacing list, choose Pitch and Span. In the Pitch Distance box, type – 20. In the Span Distance box, type – 50. 9. Choose another command or click OK to create the pattern. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 1.4. 9 Create a pattern of features on a truncated cone This example shows you how to:   Create an angled linear pattern of features on the truncated cone face. Use the first linear pattern to create another pattern along a circular edge. 1. Click Pattern Feature . 2. Select features to pattern. You can use the Part Navigator select features. to Feature groups can also be selected. 3. Set the following Pattern Definition parameters:      Associactive Copy Layout = Linear Specify Vector = Angled sketch line Spacing = Count and Span Count = 4 Span Distance = 70 drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 4. 10 Click the middle mouse button to Apply. 5. Select features to pattern. You can use the Part Navigator select features. 6. Set the following Pattern Definition parameters:      Associactive Copy to Layout = Along Select Path = Edge of base of cone Spacing = Count and Span Count = 10 Location = %Arc Length drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 11  % Span By = 100 7. Choose another command or click OK to create the pattern. 1.5. Edit a pattern of features using variance and clocking This example shows you how to:   Vary a pattern by editing parameters of selected features of the pattern. Use clocking to move specific features of a feature pattern. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 12 1. In the Part Navigator, position the cursor over a Pattern node to edit and right-click→Edit with Rollback. 2. In the Pattern Feature dialog box, in the Instance Points section, click Select Instance Point Associactive Copy drive24ward (meslab.org/mes) . [NX8-HELP] ASSOCIACTIVE COPY 13 3. Select the middle concentric arc of instance points as the features to edit. 4. With the cursor on a selected pattern point, rightclick→Specify Variance. The Variance dialog box becomes available. 5. Select an object expression to variant, then rightclick→Add to Edit. The selected expression is added to the Values group of the Variance dialog box where its value can be modified for the selected instance points. 6. You can edit multiple expressions by adding them to the Values group. Edit the expressions then OK. In this example the following expressions were modified:   Associactive Copy EXTRUDE: End Limit: Increased from 10 mm. to 30 mm. SIMPLE HOLE: Diameter. Decreased from 10 mm. to 5 mm. drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 14 Visual check with Show Result 7. Click OK. 8. Click Deselect All on the Selection bar. The selected instance points are deselected. 9. Select the new reference points, use Specify Variance to vary the diameter. 10. Make modifications to expressions. In this example, the following expression was modified:  SIMPLE HOLE: Diameter. Decreased from 10 mm. to 5 mm. Click OK. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 15 Visual check with Show Result 11. With the cursor over one of the selected instance points, right-click→Clock. 12. Use the Angle and Radial handles or input boxes to adjust the clocking. In this example, the rotation angle is set to 150 degrees. 13. Click OK to accept the clocking parameters. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 16 14. Choose another command or click OK to create the patter 1.6. Reuse pattern references to control the shape of pattern features This example shows you how to:   Create a pattern of slot features along a curve. Reuse sketch references to control the shape of the pattern features. The feature pattern will be created from an extruded sketch. The sketch is constrained to the base of the cylinder (1) and the intersection curve on the tube (2). Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 17 1. Click Pattern Feature . 2. Select features to pattern. The default Reference Point is displayed. It is at the center of the object’s mass. 3. In the Reference Point group, use Specify Point options to move the reference point to the tangency point on the intersection curve. 4. Set the following parameters for Direction 1:      Associactive Copy Layout = Along Path Method = Offset Select Path = Angled elliptical intersection curve Spacing = Count and Span Count = 20 drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 18   5. Set the following parameters for Orientation:    6. Location = % Arc Length % Span By = 100 Orientation = Same as Input Follow Face (selected) Select Face = Outside face of the tube Set the following parameters for Pattern Method:   Method = Variational In the Reusable References list, select the geometry you want to reference during patterning. In this example, two sketches which control the slot geometry are selected. Extrude Coordinate system for Datum Coordinate System for Extrude Sketch External Reference for Extrude Sketch External Reference for Extrude 7. Use Preview → Show Result to check the pattern. Choose another command or click OK to create the pattern. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 1.7. 19 Pattern Feature dialog box Features to Pattern Lets you select one or more features to pattern. Select Feature Reference Point Lets you specify a location reference point for the input feature. Specify Point Pattern Definition Sets the pattern layout. There are seven available layouts. Linear – Defines a layout using one or two directions. Circular – Defines a layout using a rotation axis and optional radial spacing parameters. Polygon – Defines a layout using an equilateral polygon and optional radial spacing parameters. Layout Spiral – Defines a layout using a spiral path. Along – Defines a layout that follows a continuous curve chain and optionally a second curve chain or a vector. General – Defines a layout using locations defined by one or more target points or coordinate systems. Reference – Defines a layout by using an existing pattern. Boundary Definition Not available when Layout is set to Along, General, or Reference. Associactive Copy drive24ward (meslab.org/mes) [NX8-HELP] ASSOCIACTIVE COPY 20 None Does not define boundaries. Patterns are not restricted to boundaries. Face Lets you select face edges, sheet edges, or region boundary curves to define the pattern boundary. Curve Lets you select a set of curves, or create a sketch to define the pattern boundary. Boundary Exclude Lets you select curves or create a sketch to define an area that is excluded from patterning. Apply Margin to Internal Boundaries Available when Layout is set to Linear, Circular, Polygon or Spiral and Boundary is set to Face or Curve. Simplified Boundary Fill Displays the Simplified Layout subgroup of options that you can use to fill the specified boundary with instances. The available options depend on the Layout option that you select. You do not need to input as much information to create the instances. Linear layout Associactive Copy Lets you form a grid for the simplified linear layout pattern, using the Square, Triangle, or Diamond options on the Layout list. The drive24ward (meslab.org/mes)