Path Workbench/ro

Introducere
Atelierul traiectorii este folosit pentru producerea unor instrucţiuni CNC machines pornind de la un model FreeCAD 3D. Acestea produc obeicte reale 3D pe mașini CNC ca frezele, strungurile, mașinile de tăiat cu laser, sau similare.În mod tipic instrucțiile sunt un dialect  G-Code.



Algoritmul pentru crearea acestor instrucțiuni în FreeCAD, în limbajul G-cod, este următorul:
 * A 3D model is the base object, typically created using one or more of the Part Design, Part or Draft Workbenches.
 * A Job is created in Path Workbench. This contains all the information required to generate the necessary G-Code to process the Job on a CNC mill: there is Stock material, the mill has a certain set of tools and it follows certain commands controlling speed and movements (usually G-Code).
 * Tools are selected as required by the Job Operations.
 * Milling paths are created using e.g. Contour and Pocket Operations. These Path objects use internal FreeCAD G-Code dialect, independent of the CNC machine.
 * Export the job with a g-code, matching to your machine.

Legături pentru cei nerăbdători
Funcție de interesul dumneavoastră pentru Atelierul de Traiectorii sunt diferite subiecte care merită cititie:


 * Dacă sunteți un nou utilizator nou care încearcă să se familiarizeze cu Path, ați putea fi interesat de un post rapidwalk-through tutorial.
 * If you have a special machine which cannot use one of the available postprocessors you may want to learn about post-processor customization
 * As an experienced user you may want to write a macro or automate a process might need to learn about scripting
 * Power users who want to streamline their workflow can learn about customization.
 * New developers who want to contribute to path might want to understand core concepts.

Concepte generale
Path Workbench generează G-Code care definește căile necesare pentru a mula Proiectul reprezentat de modelul 3D pe miezul țintă [the Path Job Operations FreeCAD G-Code dialect], care ulterior se traduce în dialectul corespunzător pentru controlerul CNC țintă prin selectarea postprocesorului adecvat. Codul G este generat de directivele și operațiile conținute într-o traiectorie. Fluxul de lucru al joburilor le afișează în ordinea în care vor fi executate. Lista este populată prin adăugarea operațiunilor de deplasare, a traiectoriile suplimentare(Dressup), a comenzilor parțiale ale traiectorilor și a modificărilor de parcurs - din meniul Path sau prin butoanele GUI.

Path Workbench oferă un Manager de instrumente (Library, Tool-Table) și G-Code Inspection și instrumente de simulare. Acesta leagă postprocesorul și permite importarea și exportul șabloanelor de lucrări.

Path Workbench include dependențe externe:
 * 1) Unitățile de măsură ale modelului FreeCAD 3D sunt definite în Edit → Preference... → General → Units tab's Units settings.  Configurația Postprocesorului definește unitățile finale de cod G.
 * 2) Fișierul Macro al traiectorie, and Geometric toleranțe, sunt definite în Edit → Preferences... → Path → Job Preferences  tab.
 * 3) Culorile sunt definite in the Edit → Preferences... → Path → Path colors tab.
 * 4) Parametrii Punților de susținere (Holding tag) sunt definite în Edit → Preferences... → Path → Dressups tab.
 * 5) That the Base 3D model quality supports the Path WB requirements—passes Check Geometry.

Units
Unit handling in Path can be confusing. There are several points to understand:
 * 1) FreeCAD base units for length and time are 'mm' and 's' respectively. Velocity is thus 'mm/s'. This is what FreeCAD stores internally regardless of anything else
 * 2) The default unit schema uses the default units. If you're using the default schema and you enter a feed rate without a unit string, it will get entered as 'mm/s'
 * 3) Most CNC machines expect feed rate in the form of either 'mm/min' or 'in/min'.  Most post-processors will automatically convert the unit when generating gcode.

Schemas:
 * 1) Changing schema in preferences changes default unit string for the input fields.  If you're a Path user and prefer to design in metric, it's highly recommended that you use the "Metric Small Parts & CNC" schema.  If you design in US units, either the Imperial Decimal and Building US will work
 * 2) Changing your preferred unit schema will have no effect on output but will help avoid input errors

Output:
 * 1) Generating the correct unit in output is the responsibility of the post-processor and is done only at that time
 * 2) Machine output unit is completely unrelated to your selected unit schema
 * 3) Post-processors produce either metric (G21) output, Imperial (G20) output or are configurable.
 * 4) Configurable post-processors default to metric (G21)
 * 5) If you want your configurable post-processor to output imperial gcode (G20), Set the correct argument in your job output configation (ie --inches for linuxcnc).  This can be stored in a job template and set as your default template to make it automatic for all future jobs

Path Inspection:
 * 1) If you use the Path Inspect tool to look at g-code, you will see it in 'mm/s' because it is not being post-processed

Path Commands
These commands are used for seting up a CNC project and manage your templates.


 * [[Image:Path-Job.png|32px]] Job: Creates a new CNC job


 * [[Image:Path_PostProcess.png|32px]] Post Process: Exports a project to G-code


 * [[Image:Path-ExportTemplate.png|32px]] Export Template: Export the current job as a template


 * Path_Inspect.png G-Code Inspector: Shows the G-code for checking


 * Path_Simulator.png Simulator: Shows the milling operation like it's done on the machine


 * [[Image:Path_ToolLibraryEdit.png|32px]] Tool Manager: Edit the Tool Manager


 * Path-CompleteLoop.png Complete Loop: Completes a loop from two selected edges


 * Path_Contour.png Contour: Creates a path of the contour of the base object


 * [[Image:Path-Profile-Face.png|32px]] Profile from Face: Creates a profiling path from a selected face


 * [[Image:Path-Profile-Edges.png|32px]] Profile from Edges: Creates a profiling path from selected edges


 * [[Image:Path_Pocket.png|32px]] Pocket: Creates a pocketing operation from one ore more selected pocket(s)


 * [[Image:Path_Drilling.png|32px]] Drilling: Performs a drilling cycle


 * [[Image:Path-Engrave.png|32px]] Engrave: Creates a engraving path


 * [[Image:Path-Face.png|32px]] Mill Face: Creates a surfacing path


 * [[Image:Path-Helix.png|32px]] Helix: Creates a helical path


 * [[Image:Path-3DPocket.png|32px]] 3D Pocket: Creates a path for a 3D pocket

Path Dressup

 * [[Image:Path_Dressup.png|32px]] Dogbone Dressup: Adds a dogbone dressup modification to a selected path


 * [[Image:Path_Dressup.png|32px]] Dragknife Dressup: Adds a dragknife dressup modification to a selected path


 * [[Image:Path_Dressup.png|32px]] Lead In Dressup: Adds a lead-in and/or lead-out point to a selected path


 * [[Image:Path_Dressup.png|32px]] Ramp Entry Dressup: Adds ramp entry dressup modification to a selected path


 * [[Image:Path_Dressup.png|32px]] Tag Dressup: Adds a holding tag dressup modification to a selected path

Partial Commands

 * [[Image:Path_Fixture.png|32px]] Fixture: Changes the fixture position


 * [[Image:Path_Comment.png|32px]] Comment: Inserts a comment in the G-code of a path


 * [[Image:Path_Stop.png|32px]] Stop: Inserts a full stop of the machine


 * [[Image:Path_Custom.png|32px]] Custom: Inserts custom G-code


 * [[Image:Path_GcodeFromShape.png|32px]] Gcode From a Shape: Creates a path object from a selected Part object

Path Modification

 * [[Image:Path_Copy.png|32px]] Copy: Creates a parametric Copie of a selected path object


 * [[Image:Path_Array.png|32px]] Array: Creates an array by duplicating a selected path


 * [[Image:Path_SimpleCopy.png|32px]] Simple Copy: Creates a non-parametric copy of a selected path object

Other

 * [[Image:Path-3DSurface.png|32px]] 3D Surface: Creates a path for a 3D surface


 * [[Image:Path-Area.png|32px]] Feature area: Creates a feature area from selected objects


 * [[Image:Path-Area-Workplane.png|32px]] Feature area workplane: Creates a feature area workplane


 * Path_Sanity.png Path Errors: Checks the selected Job for missing values

Preferences

 * [[Image:Std_DlgParameter.png|32px]] Preferences...: Preferences disposable in Path Tools.

Scripting
The Path workbench offers a broad python scripting API. With it, you can create and modify paths from python scripts, or extend the available functionality of the workbench.

FAQ
FAQ

The Path Workbench shares many concepts with other CAM software packages but has its own peculiarities. If something seems wrong, this might be a good place to start.