solidworks session 5 ferdowsi university of mashhad dr. behnam moetakef imani
TRANSCRIPT
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SolidWorks Session 5Ferdowsi University of MashhadDr. Behnam Moetakef Imani
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Sweep
Sweep creates a base, boss, cut, or surface by moving a profile (section) along a path, according to these rules:
o The profile must be closed for a base or boss sweep feature; the profile may be open or closed for a surface sweep feature.
o The path may be open or closed.o The path may be a set of sketched curves
contained in one sketch, a curve, or a set of model edges.
o The start point of the path must lie on the plane of the profile.
o Neither the section, the path,nor the resulting solid can be self-intersecting.
o The guide curve must be coincident with the profile or with a point in the profile sketch.
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Simple sweep
• to create a sweep feature a cross-section and a path are required.
• The profile is typically perpendicular to the path, although this is not a requirement.
• The profile (cross-section) can change along the path, but the overall shape must remain the same.
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Sweep
Sweep is one of the advanced feature in SolidWorksSweep can create:
a base, boss, cut, or surface
by definition, moving a profile(section) along a path, will create a sweep feature.
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No trajectory controlled interpolation trajectory controlled interpolation
controlling the size, orientation, and position of the cross-sectionas it travels through the sweep.
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Sweep
Steps of creating a simple sweep featureo Sketch a closed, non-intersecting profile on a plane or a face.o Create the path for the profile to follow. Use a sketch, existing model edges, or
curves.o Swept Boss/Base or Swept Cut or Swept Surface o Select a sketch in the graphics area for Profile o Select a sketch in the graphics area for Path
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To Create a Sweep
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Sweep
Sweeps can:
• Use guide curves (more advanced)• Be created with multiple profiles • Be created as thin features
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Introducing Guide Curve and Path
Path – vertical sketch through ellipse
Guide curve – spline
Profile - ellipse
Path and guide curve length•The path and the guide curves may differ in length. •If the guide curves are longer than the path, the sweep is as long as
the path.•If the guide curves are shorter than the path, the sweep is as long as
the shortest guide curve
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Pierce constraint
Pierce relation• It acts as if the 3D curve is a length of thread and the sketch point is
the eye of a needle where the thread pierces the needle eye.
• The Pierce relation is most important in the Sweep feature when it is applied in the profile sketch between endpoints, center points, or sketch points and the out-of-plane guide curves.
• This is because the Pierce relation determines how the profile sketch will be solved when it is moved down the sweep path to create intermediate profiles.
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Sweep with Guide curve
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Orientation/Twist Control Options
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Orientation/Twist Control Options
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Orientation/Twist Control Options
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Orientation/Twist Control Options
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• Sweep follow 1st and 2nd guide curve
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Orientation/Twist Control Options
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Orientation/Twist Control Options
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Guide Curves
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Guide Curves: Merge Smooth Faces
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Start/End Tangency
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Thin Feature
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Solid sweep
• cut sweeps– The most common usage is in creating cuts around
cylindrical bodies.
– This option would also be useful for end mill simulation.
Tool body and path Cut sweep
sweep cut along a non-tangent path(to check)
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Solid sweep
• how Solid sweep handles a tool body following a helix path– When you select Follow path for the Orientation/twist
type, and None for Path alignment type, the tool body correctly follows the tangents of the helix path
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Solid sweep
• To keep the tool body perpendicular to a reference as it follows a helix path, – select Direction Vector for Path alignment type,
– select a direction to which the tool body remains perpendicular, for example, the normal to the planar end face of a cylinder.
-The tool body remains parallel to the end face as it follows the helix path along the cylinder. - This functionality is important for the tool machining market
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Solid sweep
• Tool body must:– Be a 360-degree revolved feature.
– Contain only analytical geometry, such as lines and arcs
– Not be merged with the model.
For cut sweeps only, when you select Solid sweep,
the path must be tangent within itself (no sharp corners) and begin at a point on or within the tool body profile.
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Sweep and solid sweep assignment
Orientation/twist type : Follow path Path alignment type : None
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Loft
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To Create Loft
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A common Loft example
مدل نمایید.loftسر چکش زیر را با •
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Loft Property Manager : Guide Curves
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Loft Types
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Loft : Centerline
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Loft : Guide curve and non-planar profile
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Loft : with Start and End Constraints
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Loft : with Start and End Constraints
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Loft : with Start and End Constraints
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Loft : Split Line
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تمرین
را مدل نمایید. کلیه ویژه گی mm 20مته به قطر خارجی 1.های عملکرد مدل شود.
را به صورت یک جسم صلب مدل نمایید. impellerقطعه زیر 2.سطوح پره فقط با یک سطح مدل شود. کلیه لبه های تیز
fillet.یا پخ زده شود
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با گام helix و منحنی solid sweep - با استفاده از دستور 3متغیر دو نوع پیچ انتقال زیر را ایجاد نمایید. توجه نمایید
که نوک ابزار کروی است.