SIEMENS UG 公司内部培训资料

4
© UGS Corp. 2007. All rights reserved.
UGS PLM Software
Scrapbook commands
Scrapbook commands in Direct Modeling let you reuse faces in a part, and if necessary change their function. Changing the function of a part is more complex than changing its fit. You may have to take it apart, change it, and put it back together. Changing the function typically involves deleting and adding geometry. The following new and updated commands are useful tools to use when you need to make such changes to a part.
2
© UGS Corp. 2007. All rights reserved.
UGS PLM Software
Move Face
The Move Face command is new, replacing the earlier command with the same name. It has the following enhancements: • Face Guide: These options, available under the Face to Move group, enable you to designate additional faces to move, based on how their geometry compares to that of the selected face to move. Many Direct Modeling commands now have Face Guide options that recognize geometric relations between an input face and a set of scope faces within the model. • Transform: This new group provides linear and angular transform methods for the selected faces to move. These methods are available in the new Motion list that has replaced the earlier Type list. The following new methods, are available in the Motion list. •Distance between Points •Radial Distance •Rotate by Three Points •Distance-Angle •CSYS to CSYS
What ’s new in NX6 Direct Modeling
PPDC Siemens PLM Software Leon Li 2007/12/28
© UGS Corp. 2007. All rights reserved.
UGS PLM Software
Content
• • • • • • • Move Face Scrapbook commands Geometric transform commands Linear Dimension Radial Dimension Group Face Enhanced Direct Modeling commands
�
8
© UGS Corp. 2007. All rights reserved.
UGS PLM Software
Radial Dimension
The Radial Dimension command lets you move a set of cylindrical or spherical faces, or faces with a circular edge, by adding a radial dimension and then changing its value. Below, a cylinder face is moved by placing a radial dimension on the highlighted face and then changing the value of the dimension.
Copies a face set, deletes that face set from the body, and heals the open area left in the model.
�
Copies a face set from a body, keeping the original face set intact.
�
Makes one face parallel to another face.
�
Makes one face perpendicular to another face.
�
Makes one face tangent to another face.
�
Makes one face symmetric to another face about a plane of symmetry.
6
© UGS Corp. 2007. All rights reserved.
UGS PLM Software
Geometric transform commands
These commands work in a similar fashion to one another and share some of the same group of options, such as the following:
�
In the following example, the louver faces on the sheet metal part are easily moved by a specified distance and direction using the Move Face command. The faces are selected using the Rib Faces Selection Intent rule.
UGS PLM Software
�
�
7
© UGS Corp. 2007. All rights reserved.
Linear Dimension
�
The Linear Dimension command lets you move a set of faces by adding a linear dimension to a model and then changing its value. A face is moved in the following example by placing a linear dimension using origin and measurement points, selecting the face to move, and then changing the value of the dimension.
�
Cut Face Copy Face Paste Face Mirror Face Delete Face These and other Direct Modeling commands are primarily suited for models composed of analytic faces (that is planes, cylinders, cones, spheres, and tori). This does not necessarily mean “simple” parts, since models with many thousands of faces are composed of these face types.
5
© UGS Corp. 2007. All rights reserved.
UGS PLM Software
Geometric transform commands
The following new Direct Modeling commands let you move selected faces by transforming them based on the constraining geometry of another face:
�
Motion Face: Lets you select the input face whose shape you want to move or transform. Stationary Face: Lets you select the face whose geometric property is used to constrain the transforming movement of the motion face. The stationary face does not move. Tag-along Face: Lets you select additional faces to move in the model using the current transform command. The Face Guide option within the Tag-along Face group is a great new tool to designate additional faces to move in the model, based on how their geometry compares to that of the selected stationary face. It works in a way that is similar to Selection Intent, with the added benefit of collecting faces based on geometric relations.