直紋曲面

1. 按一下 。

   

2. 選擇做為直紋曲面路徑的邊線，可以是單一條邊線或多條邊線。
3. 指定「直紋曲面類型」。
   1. Normal - The surface is normal to the edge.
   2. 相切 - 曲面與邊線相切。
   3. 與方向對齊 - 曲面會與其他方向對齊；例如，直紋曲面會與幾何建構或另一物件的邊線對齊。
   4. 與方向形成角度 - 曲面與所選方向形成一角度；例如，直紋曲面與幾何建構或另一物件的方向形成一角度。



從左到右：垂直、相切、與方向對齊及與方向形成角度。

如果您選擇的方向無法從其中建立零件或整個直紋曲面，會在草圖中以紅色顯示方向，表示方向是錯誤的。請為您的對齊選擇一個新的方向邊線。

4. 指定相對於所選邊線的曲面角度，單位是度。可按一下旋轉圖示來反轉角度。
5. 指定與邊線的距離。按一下箭號圖示可反轉方向。

如果您選擇的角度或距離會迫使直紋曲面互為相交，則會出現錯誤，且不會顯示曲面。會在「直紋曲面」對話方塊的頂部與特徵清單中以紅色顯示直紋曲面。

6. (選擇性) 選擇一個參考面。這是用來做為直紋曲面參考的面。當一開始選擇「直紋曲面路徑」的邊線時，會將邊線的相鄰面之一用做為邊線的參考面，且會自動將其加入對話方塊中。若要選擇一個不同或其他的參考面 (例如，邊線的另一面)，您可以選擇對話方塊中的 [參考面] 欄位，然後選擇新的參考面。若要刪除之前選取的參考面，按一下面標籤右側的 x 圖示。
7. (選擇性) 選擇頂點覆寫。根據預設，整體直紋曲面的定義是受選取邊線所建立的路徑控制。不過，您可以改寫此種行為，並在選取的任何一或多個點上指定直紋曲面的定義。選擇對話方塊中 [頂點覆寫] 的欄位，然後選擇沿著直紋取面路徑上的一個頂點。您可以為每個頂點覆寫指定下列的項目：
   1. Ruled surface type - Normal, Tangent, Aligned with direction, or Up to vertex. These are similar to the Ruled surface type above, but with the additional Up to vertex option - Up to a selected point (vertex) or Mate connector (inferred or existing). Click the in order to select inferred Mate connectors. Once a Mate connector is selected, click the Mate connector icon in the dialog field to open a dialog with which to edit the Mate connector.
   2. 角度 - 以度為單位的角落角度。可按一下旋轉圖示來反轉角度。
   3. 距離 - 角落距離。按一下箭號圖示可反轉方向。



已套用「頂點覆寫」，其中頂點是用來操控直紋取面的角度與方向的。

可以使用覆寫標籤左側的下拉箭頭來展開與摺疊每個「頂點覆寫」。



8. (Optional) Use cubic interpolation - By default, the Ruled surface path uses linear interpolation. For finer continuity between the segments, you can select the cubic interpolation option.

   

   兩個鏡射直紋曲面段之間的線性 (左圖) 與三次 (右圖) 插補的範例。

9. (選擇性) 顯示直紋線 - 在所有直紋曲面上顯示直紋線。會根據連續路徑設定直紋線，可以設定從 1 到 100 的數量，預設值是 40。
10. 選擇轉角類型，選項有：
    1. Spun corner (default) - Uses curved spun corners to connect adjacent surface edges, if possible.
    2. 延伸角 - 如果可能的話，使用延伸曲面線來連接相鄰的曲面邊線。
    3. 提高角 - 如果可能的話，使用提高角來連接相鄰的曲面邊線。
    4. 無轉角 - 省略相鄰曲面邊線間的轉角。



從左到右：轉角、延伸角、提高角與無角落。

如果無法在曲面邊線間建立角落，系統會產生一個錯誤，並顯示這個訊息：



11. 按一下 。

從一個多邊形曲面向外延伸的直紋曲面

This lists the collection of surface feature tools. This is not an exhaustive list. Additional Feature tools may be used when modeling surfaces. See Surfacing for additional information.

• Thicken - Add depth to a surface. Create a new part or modify an existing one by giving thickness to a surface and converting it to a solid, adding or removing material from an existing part or surface, or intersecting parts in its path.
• Enclose - Create a part by selecting all boundaries surrounding an empty space to form a solid. Use any set of surfaces and solids (including planes and faces) that intersect each other or connect at a boundary to create a volume.
• Fillet - Round sharp interior and exterior edges and define as a standard constant radius, more stylized conic, or variable by selecting Edge fillet. Optionally apply a Full round fillet to create a seamless blend of one or more faces between two opposing sides.
• Face blend - Round sharp connected or disconnected interior and exterior faces to create a seamless blend between the faces or detach the blend to create new faces, defining a radius or constant width. Further define the blend cross section (rolling ball or swept profile), symmetry, control, trim, constraints, and limits.
• Delete face - Remove geometry from a part. Select whether to heal the surrounding faces (by extending until they intersect), cap the void, or leave the void open. This Direct Editing tool is especially convenient if you don't have the parametric history of the part, as is often the case with an imported part.
• Move face - Translate, rotate, or offset one or more selected faces. This Direct Editing tool is especially convenient if you don't have the parametric history of the part, as is often the case with an imported part.
• Replace face - Trim a face or extend a face to a new surface. This Direct Editing tool is especially convenient if you don't have the parametric history of the part, as is often the case with an imported part.
• 偏移曲面 - 偏移一個現有面、曲面或草圖區域來建立新的曲面。將偏移距離設定為 0 來就地產生一個副本。
• Boundary surface - Create or add a surface specified by its boundary profiles.
• Fill - Create a surface (or a part from surfaces) by defining boundaries and refine the surface with boundary conditions (instead of requiring the use of reference surfaces).
• 移動邊界 - 移動曲面的邊界線以延伸或修剪曲面。
• Ruled surface - Create a new or additional ruled surface from an existing edge or multiple edges of a sketch region.
• Mutual trim - Trim two adjacent surfaces by extending intersections to complete the trim.