草图工作台中的草图映射工具
映射草图至面... |
菜单位置 |
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Part Design/Sketch → 映射草图至面... |
所属工作台 |
Sketcher, PartDesign |
默认快捷键 |
沒有 |
版本介紹 |
- |
参阅 |
创建草图 |
描述
此工具会将一个存在的草图映射至一个几何图形的面上。以此草图创建的PartDesign特征可针对相加特征(如两种挤出成型方式Pad与evolution)与基础实体融合,或针对相减特征(如两种挖槽方式Pocket与Groove)与基础实体相减。
请注意,此工具不能用于创建新的草图。仅限于进行草图映射,或将存在的草图重新映射至实体面或PartDesign特征。典型的使用场景:
- 草图被创建在一个标准的平面上(XY, XZ, YZ),而您却想将其映射至一个实体面上,从而进一步在此构建一个特征。
- 草图被映射至实体的某个特定面上,而您却需要把它映射至另一个不同的面上。
- 修复一个坏掉的模型。
Usage
如何使用
- 选择一个PartDesign特征上的面或一个实体上的面。
- 点击工具栏中的 Map sketch to face图标(或前往当前所用工作台中的PartDesign或Sketch菜单找此工具)。
- 在打开的Select sketch对话窗口中的列表里选择待映射至面上的草图,并点击OK。
- 草图将自动在编辑模式下打开。
在修复一个损坏的模型时使用草图映射工具
草图工作台中的草图映射工具(MapSketch)常用于修复损坏的模型。
一个常见的用例是所依赖的关系图(graph)有所损坏。(您可以通过Tools → Dependency graph来查阅依赖关系图。)从模型树中间删除某个特征可能是造成这个问题的罪魁祸首。在以下示例中,我们将实际破坏并修复一个模型。
这是一个基础模型。其中有一个凸垫,一个凹槽,以及一个凹槽中凸垫。请注意,此模型的依赖图是线性的。
我们现在已删除了凹槽以及凹槽所创建的草图(即Pocket与Sketch001)。注意到,依赖图一分为二,坏掉了。为了修复此模型,我们希望将Sketch002附于Pad的顶面上。在此模型的视图中,您将发现很容易选错面。
为了修复此模型,我们首先改变此实体的可见性。即隐藏Pad001并令Pad可见。
我们现在选择Pad的顶面,再选择草图映射工具。在弹出的对话框中选中Sketch002。此时,我们的模型就修复好了。在模型视图中,我们令Pad001可见,并隐藏Pad,即可看到正确的模型。
Sketcher
- General: Create sketch, Edit sketch, Attach sketch, Reorient sketch, Validate sketch, Merge sketches, Mirror sketch, Leave sketch, View sketch, View section, Toggle grid, Toggle snap, Configure rendering order, Stop operation
- Sketcher geometries: Point, Polyline, Line, Arc, Arc by 3 points, Arc of ellipse, Arc of hyperbola, Arc of parabola, Circle, Circle by 3 points, Ellipse, Ellipse by 3 points, Rectangle, Centered rectangle, Rounded rectangle, Triangle, Square, Pentagon, Hexagon, Heptagon, Octagon, Regular polygon, Slot, Arc slot, B-spline by control points, Periodic B-spline by control points, B-spline by knots, Periodic B-spline by knots, Toggle construction geometry
- Sketcher constraints:
- Dimensional constraints: Dimension, Horizontal distance, Vertical distance, Distance, Auto radius/diameter, Radius, Diameter, Angle, Lock
- Geometric constraints: Coincident (unified), Coincident, Point on object, Horizontal/vertical, Horizontal, Vertical, Parallel, Perpendicular, Tangent or collinear, Equal, Symmetric, Block
- Other constraints: Refraction (Snell's law)
- Constraint tools: Toggle driving/reference constraint, Activate/deactivate constraint
- Sketcher tools: Fillet, Chamfer, Trim, Split, Extend, External geometry, Carbon copy, Select origin, Select horizontal axis, Select vertical axis, Array transform, Polar transform, Scale transform, Offset geometry, Symmetry, Remove axes alignment, Delete all geometry, Delete all constraints
- Sketcher B-spline tools: Convert geometry to B-spline, Increase B-spline degree, Decrease B-spline degree, Increase knot multiplicity, Decrease knot multiplicity, Insert knot, Join curves
- Sketcher visual: Select unconstrained DoF, Select associated constraints, Select associated geometry, Select redundant constraints, Select conflicting constraints, Show/hide circular helper for arcs, Show/hide B-spline degree, Show/hide B-spline control polygon, Show/hide B-spline curvature comb, Show/hide B-spline knot multiplicity, Show/hide B-spline control point weight, Show/hide internal geometry, Switch virtual space
- Additional: Sketcher Dialog, Preferences, Sketcher scripting
User documentation
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Assembly, BIM, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework
- Hubs: User hub, Power users hub, Developer hub