Difference between revisions of "TechDraw Module/zh"

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[[File:preferences-techdraw.svg|64px]]
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FreeCAD is primarily a 3D modelling tool. There are times, however, when we must produce 2D drawings for documentation, contracts, permits, etc.  The Technical Drawing workbench (TechDraw) is used to produce basic technical drawings based on the 3D model. Each drawing is a Page, and a Page contains many Views of Drawable Objects.  The list of Drawable Objects includes Part::Features, PartDesign::Bodies, App::Part groups and Document Object groups. 
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[[Image:Workbench_TechDraw.svg|thumb|128px|TechDraw workbench icon]]
  
Dimensions and hatched areas can be added to Views.
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== Introduction ==
  
Note: if your primary goal is the production of complex 2D drawings, and you don't need 3D modelling, you may wish to consider a dedicated software program such as LibreCad, QCad, TurboCad, and others.
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The [[Image:Workbench_TechDraw.svg|24px]] [[TechDraw Workbench|TechDraw Workbench]] is used to produce basic technical drawings from 3D models created with another workbench such as [[Part Workbench|Part]], [[PartDesign Workbench|PartDesign]], or [[Arch Workbench|Arch]], or imported from other applications. Each drawing is a Page, which can contain various Views of drawable objects such as Part::Features, PartDesign::Bodies, App::Part groups, and Document Object groups. The resulting drawings can be used for things like documentation, manufacturing instructions, contracts, permits, etc.
  
{{Version|0.17}}
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Dimensions, sections, hatched areas, annotations, and [[SVG|SVG]] symbols can be added to the page, which can be further exported to different formats like [[DXF|DXF]], [[SVG|SVG]], and [[PDF|PDF]].
  
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TechDraw was officially included in FreeCAD starting with version 0.17; it is intended to replace the unsupported [[Drawing Workbench|Drawing Workbench]]. Both workbenches are still provided in v0.17, but the Drawing Workbench may be removed in future releases. To keep up with TechDraw plans and developments, visit the [[TechDraw Roadmap|TechDraw Roadmap]].
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FreeCAD is primarily a 3D modelling application, and thus doesn't have many 2D drawing tools, which are mostly included in the [[Draft Workbench|Draft]] and [[Sketcher Workbench|Sketcher Workbench]]es. If your primary goal is the production of complex 2D drawings and [[DXF|DXF]] files, and you don't need 3D modelling, you may wish to consider a dedicated software program for technical drafting such as [https://en.wikipedia.org/wiki/LibreCAD LibreCAD], [https://en.wikipedia.org/wiki/QCad QCad], TurboCad, and others.
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{{TOCright}}
 
[[File:TechDraw Workbench Example.png|600px]]
 
[[File:TechDraw Workbench Example.png|600px]]
  
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== Pages ==
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These are tools for creating Page objects.
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* [[File:TechDraw PageDefault.svg|32px]] [[TechDraw_PageDefault|Insert Default Page]]: adds a new page using the default [[TechDraw_Templates|template]].
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* [[File:TechDraw PageTemplate.svg|32px]] [[TechDraw_PageTemplate|Insert Page using Template]]: adds a new page using a selected [[TechDraw_Templates|template]].
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* [[File:TechDraw RedrawPage.svg|32px]] [[TechDraw_RedrawPage|Redraw Page]]: forces an update of the selected page. {{Version|0.19}}
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== Views ==
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These are tools for creating View objects.
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* [[File:TechDraw View.svg|32px]] [[TechDraw_View|Insert View]]: adds a 2D projection view of an object.
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* [[File:TechDraw ActiveView.svg|32px]] [[TechDraw_ActiveView|Insert Active View]]: inserts a view of the active 3D view. {{Version|0.19}}
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* [[File:TechDraw ProjectionGroup.svg|32px]] [[TechDraw_ProjectionGroup|Insert Projection Group]]: invokes a dialog to create many views of an object from multiple directions.
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* [[File:TechDraw SectionView.svg|32px]] [[TechDraw_SectionView|Insert Section View]]: inserts a cross-section view of an existing view.
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* [[File:TechDraw DetailView.svg|32px]] [[TechDraw_DetailView|Insert Detail View]]: inserts a detail view of a portion of an existing view.
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* [[File:TechDraw DraftView.svg|32px]] [[TechDraw_DraftView|Insert Draft Workbench Object]]: inserts a view of a [[Draft Workbench|Draft Workbench]] object.
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* [[File:TechDraw ArchView.svg|32px]] [[TechDraw_ArchView|Insert Arch Workbench Object]]: inserts a view of an [[Arch Workbench|Arch Workbench]] [[Arch SectionPlane|Section Plane]] object.
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* [[File:TechDraw SpreadsheetView.svg|32px]] [[TechDraw_SpreadsheetView|Insert Spreadsheet View]]: inserts a view of a [[Spreadsheet Workbench|Spreadsheet Workbench]] sheet.
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== Clips ==
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These are tools to create and manage Clip objects (clipped views).
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* [[File:TechDraw ClipGroup.svg|32px]] [[TechDraw_ClipGroup|Insert Clip Group]]: inserts a clip group into a page.
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* [[File:TechDraw ClipGroupAdd.svg|32px]] [[TechDraw_ClipGroupAdd|Add View to Clip Group]]: adds an existing view to a clip group.
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* [[File:TechDraw ClipGroupRemove.svg|32px]] [[TechDraw_ClipGroupRemove|Remove View from Clip Group]]: removes a view from a clip group.
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== Dimensions ==
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These are tools for creating and working with Dimension objects.
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Linear dimensions can be based on two points, on one line, or on two lines.
  
===Pages===
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* [[File:TechDraw_Dimension_Length.svg|32px]] [[TechDraw_Dimension_Length|New Length]]: adds a length dimension.
  
These are tools for creating Pages.
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* [[File:TechDraw_Dimension_Horizontal.svg|32px]] [[TechDraw_Dimension_Horizontal|New Horizontal]]: adds a horizontal length dimension.
  
* [[File:TechDraw_New_Default.png|32px]] [[TechDraw_New_Default|New Default]]: Adds a new Page using the default [[TechDraw_Templates|Template]].
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* [[File:TechDraw_Dimension_Vertical.svg|32px]] [[TechDraw_Dimension_Vertical|New Vertical]]: adds a vertical length dimension.
  
* [[File:TechDraw_New_Pick.png|32px]] [[TechDraw_New_Pick|New Pick]]: Adds a new Page using a selected [[TechDraw_Templates|Template]].
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* [[File:TechDraw_Dimension_Radius.svg|32px]] [[TechDraw_Dimension_Radius|New Radius]]: adds a radius dimension to a circle or circular arc.
  
===Views===
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* [[File:TechDraw_Dimension_Diameter.svg|32px]] [[TechDraw_Dimension_Diameter|New Diameter]]: adds a diameter dimension to a circle or a circular arc.
  
These are tools for creating Views.
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* [[File:TechDraw_Dimension_Angle.svg|32px]] [[TechDraw_Dimension_Angle|New Angle]]: adds an angle dimension between two straight edges.
  
* [[File:techdraw-view.png|32px]] [[TechDraw_NewView|New View]]: Adds a 2D View of a one or more Drawable Objects.
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* [[File:TechDraw_Dimension_Angle3Pt.svg|32px]] [[TechDraw_Dimension_Angle3Pt|New Angle3Pt]]: adds an angle dimension using three vertices.
  
* [[File:techdraw-projgroup.png|32px]] [[TechDraw_NewProjGroup|New Projection Group]]: Invokes a dialog for creating Views of one or more Drawable Objects from multiple directions.
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* [[File:TechDraw_Dimension_Link.svg|32px]] [[TechDraw_Dimension_Link|New Links]]: links an existing dimension to the 3D geometry.
  
* [[File:techdraw-viewsection.png|32px]] [[TechDraw_NewSection|New Section]]: Adds a cross-section View of one or more Drawable Objects.
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* [[File:TechDraw_Balloon.svg|32px]] [[TechDraw_Balloon|New Balloon]]: adds a "balloon" annotation to a page. {{Version|0.19}}
  
* [[File:techdraw-viewdetail.png|32px]] [[TechDraw_NewDetail|New Detail]]: Adds a detail View of a portion of an existing View.
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* [[File:TechDraw_Dimension_HExtent.svg|32px]] [[TechDraw Dimension Horizontal Extent|New Horizontal Extent]]: adds a horizontal extent dimension. {{Version|0.19}}
  
* [[File:techdraw-annotation.png|32px]] [[TechDraw_NewAnnotation|New Annotation]]: Adds a text block to a Page.
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* [[File:TechDraw_Dimension_VExtent.svg|32px]] [[TechDraw Dimension Vertical Extent|New Vertical Extent]]: adds a vertical extent dimension. {{Version|0.19}}
  
* [[File:techdraw-draft-view.png|32px]] [[TechDraw_NewDraft|New Draft]]: Adds a View of a Draft module object.
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* [[File:Techdraw-landmarkdistance.svg|32px]] [[TechDraw Dimension Landmark|New Landmark Dimension]]: adds a landmark distance dimension. {{Version|0.19}}
  
* [[File:techdraw-arch-view.png|32px]] [[TechDraw_NewArch|New Arch]]:  Adds a View of a Arch module Section Plane object.
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== Import/Export ==
  
* [[File:techdraw-spreadsheet.svg|32px]] [[TechDraw_Spreadsheet|Spreadsheet]]: Inserts a view of a selected [[Spreadsheet_Workbench|spreadsheet]] into a drawing.
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These are tools for exporting pages to other applications.
  
===Clips===
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* [[File:TechDraw ExportPageSVG.svg|32px]] [[TechDraw_ExportPageSVG|Export Page as SVG]]: saves the current page as [[SVG|SVG]] file.
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* [[File:TechDraw ExportPageDXF.svg|32px]] [[TechDraw_ExportPageDXF|Export Page as DXF]]: saves the current page as [[DXF|DXF]] file.
  
These are tools to create and manage clipped views.
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== Decorations ==
  
* [[File:techdraw-clip.svg|32px]] [[TechDraw_Clip|Clip]]: Inserts a clip group into a Page.
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These are tools to decorate pages or views:
  
* [[File:techdraw-clipplus.svg|32px]] [[TechDraw_ClipPlus|ClipPlus]]: Adds a View to a clip group.
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* [[File:TechDraw Hatch.svg|32px]] [[TechDraw_Hatch|Hatch Face using Image File]]: applies a hatch pattern from a file to a face.
  
* [[File:techdraw-clipminus.svg|32px]] [[TechDraw_ClipMinus|ClipMinus]]: Removes a View from a clip group.
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* [[File:TechDraw GeometricHatch.svg|32px]] [[TechDraw_GeometricHatch|Apply Geometric Hatch to Face]]: applies a hatch pattern to a face using an Autodesk PAT specification.
  
===Dimensions===
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* [[File:TechDraw Symbol.svg|32px]] [[TechDraw_Symbol|Insert SVG Symbol]]: inserts a symbol from a [[SVG|SVG]] file into a page.
  
These are tools for working with Dimensions. Linear dimensions can be based on two points, one line or two lines.  
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* [[File:TechDraw Image.svg|32px]] [[TechDraw_Image|Insert Bitmap Image]]: inserts a PNG or JPG [[bitmap|bitmap]] image into a page.
  
* [[File:Dimension_Length.png|32px]] [[TechDraw_Dimension_Length|New Length]]: Adds a Length Dimension.
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* [[File:TechDraw ToggleFrame.svg|32px]] [[TechDraw_ToggleFrame|Turn View Frames On/Off]]: turns on/off frames and labels surrounding a view.
  
* [[File:Dimension_Horizontal.png|32px]] [[TechDraw_Dimension_Horizontal|New Horizontal]]:  Adds a horizontal distance dimension.
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== Annotation ==
  
* [[File:Dimension_Vertical.png|32px]] [[TechDraw_Dimension_Vertical|New Vertical]]:  Adds a vertical distance dimension.
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The annotation tools are for "marking up" a drawing with additional information.
  
* [[File:Dimension_Radius.png|32px]] [[TechDraw_Dimension_Radius|New Radius]]: Adds a Radius dimension to a circle or circular arc.
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* [[File:TechDraw Annotation.svg|32px]] [[TechDraw_Annotation|Insert Annotation]]: adds a plain text block as annotation.
  
* [[File:Dimension_Diameter.png|32px]] [[TechDraw_Dimension_Diameter|New Diameter]]: Adds a Diameter dimension to a circle or a circular arc.
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* [[File:TechDraw LeaderLine.svg|24px]] [[TechDraw_LeaderLine|Add Leaderline to View]]: adds an annotation line to a view. {{Version|0.19}}
  
* [[File:Dimension_Angle.png|32px]] [[TechDraw_Dimension_Angle|New Angle]]: Adds an Angle dimension between two straight edges.
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* [[File:TechDraw RichTextAnnotation.svg|24px]] [[TechDraw_RichTextAnnotation|Insert Rich Text Annotation]]: adds an rich text block as annotation to a leaderline or a view. {{Version|0.19}}
  
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* [[File:TechDraw CosmeticVertex.svg|24px]] [[TechDraw_CosmeticVertex|Add Cosmetic Vertex]]: adds a Vertex which is not part of the source geometry. {{Version|0.19}}
  
* [[File:TechDraw_Dimension_Angle3Pt.png|32px]] [[TechDraw_Dimension_Angle3Pt|New Angle3Pt]]: Adds an Angle dimension using three vertices.
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* [[File:TechDraw Midpoints.svg|24px]] [[TechDraw_Midpoints|Add Midpoint Vertices]]: adds Cosmetic Vertices at midpoints of selected edges. {{Version|0.19}}
  
* [[File:Dimension_Link.png|32px]] [[TechDraw_Dimension_Link|New Links]]: Links 1 or more Dimensions to 3D geometry.
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* [[File:TechDraw Quadrants.svg|24px]] [[TechDraw_Quadrants|Add Quadrant Vertices]]: adds Cosmetic Vertices at quarter points of selected (circular) edges. {{Version|0.19}}
  
===Import/Export===
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* [[File:TechDraw FaceCenterLine.svg|24px]] [[TechDraw_FaceCenterLine|Add Centerline to Faces]]: adds a centerline to selected face(s). {{Version|0.19}}
  
These are tools for exporting Pages to other applications.
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* [[File:TechDraw 2LineCenterLine.svg|24px]] [[TechDraw_2LineCenterLine|Add Centerline between 2 Lines]]: adds a centerline between 2 lines. {{Version|0.19}}
  
* [[File:techdraw-saveSVG.png|32px]] [[TechDraw_SaveSVG|Save SVG]]: Saves a Page as an SVG file.
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* [[File:TechDraw 2PointCenterLine.svg|24px]] [[TechDraw_2PointCenterLine|Add Centerline between 2 Points]]: adds a centerline between 2 points. {{Version|0.19}}
* [[File:TechDraw_SaveDXF.png|32px]] [[TechDraw_SaveDXF|Save DXF]]: Saves a Page as a DXF file.
 
  
===Decoration===
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* [[File:TechDraw CosmeticEraser.svg|24px]] [[TechDraw_CosmeticEraser|Remove Cosmetic Object]]: removes cosmetic objects from a page. {{Version|0.19}}
  
These are tools for changing the appearance of Pages and Views.
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* [[File:TechDraw DecorateLine.svg|24px]] [[TechDraw_DecorateLine|Change Appearance of Lines]]: changes the appearance of selected line(s). {{Version|0.19}}
  
* [[File:techdraw-hatch.png|32px]] [[TechDraw_Hatch|Hatch Area]]: Applies a hatch pattern from a file to a Face.
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* [[File:TechDraw ShowAll.svg|24px]] [[TechDraw_ShowAll|Show/Hide Invisible Edges]]: shows/hides invisible lines/edges in a view. {{Version|0.19}}
  
* [[File:techdraw-geomhatch.png|32px]] [[TechDraw_GeomHatch|Geometric Hatch]]: Hatches a Face using an Autodesk PAT specification.
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* [[File:TechDraw WeldSymbol.svg|24px]] [[TechDraw_WeldSymbol|Add Welding Information to Leader]]: adds welding specifications to an existing leaderline. {{Version|0.19}}
  
* [[File:techdraw-symbol.png|32px]] [[TechDraw_Symbol|New Symbol]]: Inserts an SVG symbol into a Page.
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* [[File:TechDraw-line2points.svg|24px]] [[TechDraw_2PointCosmeticLine|Add a cosmetic line]]: adds a cosmetic line connecting 2 vertices. {{Version|0.19}}
  
* [[File:Techdraw-image.png|32px]] [[TechDraw_Image|New Image]]:  Inserts a png/jpg image into a Page.
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== Additional features ==
  
* [[File:techdraw-toggleframe.png|32px]] [[TechDraw_Toggle|Toggle Frames]]: Turns View frames and labels on or off in a Page.
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* [[TechDraw_LineGroup|Line Groups]]: to control the appearance of various types of lines.
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* [[TechDraw_Templates|Templates]]: the default templates defined for the drawing pages.
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* [[TechDraw_Hatching|Hatching]]: explanation of the different hatching techniques.
  
===Additional features===
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== Preferences ==
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* [[File:Preferences-techdraw.svg|32px]] [[TechDraw_Preferences|Preferences]]: preferences for the default values of the drawing page such as projection angle, colors, text sizes, and line styles.
  
* [[TechDraw_Hatching|Hatching]]: TechDraw supports a number of hatching techniques.
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== Scripting ==
* [[TechDraw_LineGroup|Line Groups]]: default weights can be assigned to various line types.
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The TechDraw tools can be used in [[macros|macros]] and from the [[Python|Python]] console by using two APIs.
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* [[TechDraw API|TechDraw API]]
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* [[TechDrawGui API|TechDrawGui API]]
  
===Preference settings===
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== Limitations ==
The TechDraw module has a [[TechDraw Preferences|preferences]] screen to adjust default values.
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* TechDraw drawings and its API are not interchangeable with the [[Drawing Workbench|Drawing Workbench]] and its API. It is possible to convert Drawing Pages to TechDraw Pages using a Python script ({{incode|moveViews.py}}).
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* It is possible to have both TechDraw and Drawing Pages in the same FreeCAD document, as each page is completely independent from each other.
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* There are minor differences in specifying editable texts in [[SVG|SVG]] templates compared to the Drawing module. In TechDraw the scaling of the SVG document affects the position of the editable text fields. See the forum discussion [https://forum.freecadweb.org/viewtopic.php?f=3&t=24981&p=196271#p196271 TechDraw templates scale] for more details.
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* Do not cut, copy and paste TechDraw objects in the tree view as this generally does not work out well.
  
===Scripting===
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== Tutorials ==
The TechDraw Workbench features a [[Python]] API that can be used in scripts and [[macros]].
 
* [[TechDraw API]]
 
* [[TechDrawGui API]]
 
  
===Limitations===
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* [[Basic TechDraw Tutorial|Basic TechDraw Tutorial]]: introduction to creating drawings with the TechDraw Workbench.
* TechDraw drawings and Python API are not interchangeable with the Drawing module. It is possible to convert Drawing Pages to TechDraw Pages using Python (moveViews.py).  It is possible to have both TechDraw and Drawing Pages in the same FreeCAD document.  
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* [[TechDraw_TemplateHowTo|Creating a new template]]: instructions to create a new page template in Inkscape for using with the TechDraw Workbench.
* There are minor differences in specifying Editable Texts in Templates compared to the Drawing module.  See forum discussion  [https://forum.freecadweb.org/viewtopic.php?f=3&t=24981&p=196271#p196271 here].
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* [[Measurement Of Angles On Holes|Measurement Of Angles On Holes]]: instructions for adding center lines and subsequent angle representations on holes.
* TechDraw is available starting with FreeCAD 0.17.
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* [[TechDraw HowTo Page|Miscellaneous]]: instructions for different settings like center marks, etc.
* Do not Cut/Copy/Paste TechDraw objects.  This does not generally work out well.
 
  
===Workarounds===
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Video tutorials by sliptonic
* None required at the moment.  
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* TechDraw Workbench [https://www.youtube.com/watch?v=7LbOmSGW9F0 Part 1 (Basics)], [https://www.youtube.com/watch?v=z3w84RfvqaE Part 2 (Dimensions)], [https://www.youtube.com/watch?v=uNjXg-m38aI Part 3 (Multiview)]
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* TechDraw Workbench [https://www.youtube.com/watch?v=3zSdeFV6I5o Part 4 (Section and Detail)], [https://www.youtube.com/watch?v=kcmdJ7xa7gg Part 5 (Customizing Templates)]
  
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Keep up with TechDraw plans and developments.  Visit the [[TechDraw_Roadmap|TechDraw Roadmap]].
 
  
  
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{{TechDraw Tools navi{{#translation:}}}}
  
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[[Category:User Documentation/zh]]
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Latest revision as of 21:12, 22 August 2020

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TechDraw workbench icon

Introduction

The Workbench TechDraw.svg TechDraw Workbench is used to produce basic technical drawings from 3D models created with another workbench such as Part, PartDesign, or Arch, or imported from other applications. Each drawing is a Page, which can contain various Views of drawable objects such as Part::Features, PartDesign::Bodies, App::Part groups, and Document Object groups. The resulting drawings can be used for things like documentation, manufacturing instructions, contracts, permits, etc.

Dimensions, sections, hatched areas, annotations, and SVG symbols can be added to the page, which can be further exported to different formats like DXF, SVG, and PDF.

TechDraw was officially included in FreeCAD starting with version 0.17; it is intended to replace the unsupported Drawing Workbench. Both workbenches are still provided in v0.17, but the Drawing Workbench may be removed in future releases. To keep up with TechDraw plans and developments, visit the TechDraw Roadmap.

FreeCAD is primarily a 3D modelling application, and thus doesn't have many 2D drawing tools, which are mostly included in the Draft and Sketcher Workbenches. If your primary goal is the production of complex 2D drawings and DXF files, and you don't need 3D modelling, you may wish to consider a dedicated software program for technical drafting such as LibreCAD, QCad, TurboCad, and others.

TechDraw Workbench Example.png

Pages

These are tools for creating Page objects.

Views

These are tools for creating View objects.

Clips

These are tools to create and manage Clip objects (clipped views).

Dimensions

These are tools for creating and working with Dimension objects.

Linear dimensions can be based on two points, on one line, or on two lines.

  • TechDraw Dimension Radius.svg New Radius: adds a radius dimension to a circle or circular arc.
  • TechDraw Dimension Diameter.svg New Diameter: adds a diameter dimension to a circle or a circular arc.
  • TechDraw Dimension Angle.svg New Angle: adds an angle dimension between two straight edges.
  • TechDraw Dimension Angle3Pt.svg New Angle3Pt: adds an angle dimension using three vertices.
  • TechDraw Dimension Link.svg New Links: links an existing dimension to the 3D geometry.

Import/Export

These are tools for exporting pages to other applications.

Decorations

These are tools to decorate pages or views:

Annotation

The annotation tools are for "marking up" a drawing with additional information.

Additional features

  • Line Groups: to control the appearance of various types of lines.
  • Templates: the default templates defined for the drawing pages.
  • Hatching: explanation of the different hatching techniques.

Preferences

  • Preferences-techdraw.svg Preferences: preferences for the default values of the drawing page such as projection angle, colors, text sizes, and line styles.

Scripting

The TechDraw tools can be used in macros and from the Python console by using two APIs.

Limitations

  • TechDraw drawings and its API are not interchangeable with the Drawing Workbench and its API. It is possible to convert Drawing Pages to TechDraw Pages using a Python script (moveViews.py).
  • It is possible to have both TechDraw and Drawing Pages in the same FreeCAD document, as each page is completely independent from each other.
  • There are minor differences in specifying editable texts in SVG templates compared to the Drawing module. In TechDraw the scaling of the SVG document affects the position of the editable text fields. See the forum discussion TechDraw templates scale for more details.
  • Do not cut, copy and paste TechDraw objects in the tree view as this generally does not work out well.

Tutorials

Video tutorials by sliptonic