Sketcher requirement for a sketch/es: Difference between revisions
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La creación de un cuerpo en el espacio de trabajo DiseñoPieza ya es posible y ''sólo'' con la ayuda de una curva cerrada (perfil). La determinación completa de todas sus dimensiones y propiedades (''totalmente restringida'') aún no es necesaria. |
La creación de un cuerpo en el espacio de trabajo DiseñoPieza ya es posible y ''sólo'' con la ayuda de una curva cerrada (perfil). La determinación completa de todas sus dimensiones y propiedades (''totalmente restringida'') aún no es necesaria. |
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Que una curva cerrada está presente, no es evidente y no es reconocible. Cuando se conecta un arco circular a una línea recta, por ejemplo, los dos puntos finales se crean sólo uno sobre el otro. Debe utilizar el [[Image:Constraint_PointOnPoint.svg|32px]] [[Sketcher ConstrainCoincident/es|Coincidente]] para hacer un solo punto que realmente conecte la línea y el arco. |
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[[File:Skizze2a.png]] |
[[File:Skizze2a.png]] |
Revision as of 18:21, 15 August 2021
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Requisito mínimo para un croquis
La creación de un cuerpo en el espacio de trabajo DiseñoPieza ya es posible y sólo con la ayuda de una curva cerrada (perfil). La determinación completa de todas sus dimensiones y propiedades (totalmente restringida) aún no es necesaria.
Que una curva cerrada está presente, no es evidente y no es reconocible. Cuando se conecta un arco circular a una línea recta, por ejemplo, los dos puntos finales se crean sólo uno sobre el otro. Debe utilizar el Coincidente para hacer un solo punto que realmente conecte la línea y el arco.
A simple sketch. Left: Curve only in four places (red, automatic constraints when drawing with Polyline) closed. Middle: Warning - ... broken face (broken curve). Right: Curve closed at remaining four places (green)
However, consistent parametric working means that the sketch is completely determined.
Definir un croquis por completo
Even a relatively simple sketch may contain dozens of indeterminacies (indicated in the combo view as a "degrees of freedom" number). To eliminate them together at the end is a relatively confusing task.
A simple sketch; completely determined by 25 constraints, of which only 5 are dimension constraints.
This work is clearer and simpler if one immediately eliminates the "freedoms" of each added geometric element, i. this dimensions (that is, values for dimensions and placements). The provisional completeness is reached if all lines are displayed in green.
If one waits until the end of the drawing to determine, one finds remaining "freedoms" by touching the points and lines with the mouse pointer and determining where they are not yet fixed. When complete, the entire drawing is displayed in green.
If you accidentally create an "overmodulation", a warning appears in the combo-view asking you to undo the corresponding actions (constraints).
- General: Create sketch, Edit sketch, Map sketch to face, 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, Line, Arc, Arc by 3 points, Circle, Circle by 3 points, Ellipse, Ellipse by 3 points, Arc of ellipse, Arc of hyperbola, Arc of parabola, B-spline by control points, Periodic B-spline by control points, B-spline by knots, Periodic B-spline by knots, Polyline, Rectangle, Centered rectangle, Rounded rectangle, Triangle, Square, Pentagon, Hexagon, Heptagon, Octagon, Regular polygon, Slot, Fillet, Corner-preserving fillet, Trim, Extend, Split, External geometry, Carbon copy, Toggle construction geometry
- Sketcher constraints:
- Geometric constraints: Coincident, Point on object, Vertical, Horizontal, Parallel, Perpendicular, Tangent, Equal, Symmetric, Block
- Dimensional constraints: Lock, Horizontal distance, Vertical distance, Distance, Radius or weight, Diameter, Auto radius/diameter, Angle, Refraction (Snell's law)
- Constraint tools: Toggle driving/reference constraint, Activate/deactivate constraint
- Sketcher tools: Select unconstrained DoF, Select associated constraints, Select associated geometry, Select redundant constraints, Select conflicting constraints, Show/hide internal geometry, Select origin, Select horizontal axis, Select vertical axis, Symmetry, Clone, Copy, Move, Rectangular array, Remove axes alignment, Delete all geometry, Delete all constraints
- Sketcher B-spline tools: 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, Convert geometry to B-spline, Increase B-spline degree, Decrease B-spline degree, Increase knot multiplicity, Decrease knot multiplicity, Insert knot, Join curves
- Sketcher virtual space: Switch virtual space
- Additional: Sketcher Dialog, Preferences, Sketcher scripting
- 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, Arch, Assembly, 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