SolidWorks Session 5 Ferdowsi University of Mashhad Dr. Behnam Moetakef Imani

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.

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.

Sweep  Sweep is one of the advanced feature in SolidWorks  Sweep can create:  a base,  boss,  cut,  or surface  by definition, moving a profile (section) along a path, will create a sweep feature.

No trajectory controlled interpolationtrajectory controlled interpolation controlling the size, orientation, and position of the cross-section as it travels through the sweep.

Sweep Steps of creating a simple sweep feature o 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

To Create a Sweep

Sweep Sweeps can: Use guide curves (more advanced) Be created with multiple profiles Be created as thin features

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

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.

Sweep with Guide curve

Orientation/Twist Control Options

Sweep follow 1 st and 2 nd guide curve

Orientation/Twist Control Options

Guide Curves

Guide Curves: Merge Smooth Faces

Start/End Tangency

Thin Feature

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 pathCut sweep sweep cut along a non-tangent path(to check)

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

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

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.

Sweep and solid sweep assignment Orientation/twist type : Follow path Path alignment type : None

Loft

To Create Loft

A common Loft example سر چکش زیر را با loft مدل نمایید.

Loft Property Manager : Guide Curves

Loft Types

Loft : Centerline

Loft : Guide curve and non-planar profile

Loft : with Start and End Constraints

Loft : Split Line

تمرین 1.مته به قطر خارجی mm 20 را مدل نمایید. کلیه ویژه گی های عملکرد مدل شود. 2.قطعه زیر impeller را به صورت یک جسم صلب مدل نمایید. سطوح پره فقط با یک سطح مدل شود. کلیه لبه های تیز fillet یا پخ زده شود.

3- با استفاده از دستور solid sweep و منحنی helix با گام متغیر دو نوع پیچ انتقال زیر را ایجاد نمایید. توجه نمایید که نوک ابزار کروی است.