Sketch-Paths and Sketch-Loops
If you click the Model name-tab, after completing Tutorials 1 and 2, you will not see a Solid. Why? Because Tutorials 1 & 2 add only kinematic elements: Parts and Joints. We represent Part and Joint elements with symbolic shapes, which are not Solids. |
Objectives of Tutorial 3
Before you can add an MD-Solid (see Tutorial 4) you must add a sketch-loop to a Part. There are two types of sketch-loops. •Those you construct from sketch-elements that you add to a Part •Those we construct for you with pseudo-lines and pseudo-arcs when you do Add Auto-Profile and/or Add Auto-Profiles. In this tutorial: •You add a sketch-loop that has Line and Arc sketch-elements. •You learn how to efficiently merge two points (and inefficiently). •For practice, you do Tutorial 1 again. You should be able to complete Tutorial 1 in less than one or two minutes. |
Terminology
Term : |
Definition |
|---|---|
Part-Outline : |
The symbol that you click to select a Part. •The Base-Part, that we add for you to the Mechanism-Editor, has a rectangular Part-Outline. •A Part, that you add to the Mechanism-Editor, has an oval Part-Outline. |
sketch-element : |
A term for Line, CAD-Line, Arc, Circle, Blend-Curve, Point, and Spline sketch-elements that you can add to a Part with the Part-Editor > Geometry toolbar |
start-Point : |
When you add a Line, CAD-Line, Arc, or Blend-Curve: the Point at which you mouse-button-down. |
end-Point : |
When you add a Line, CAD-Line, Arc, or Blend-Curve: the Point at which you mouse-button-up. |
Sketch-Path : |
A series of sketch-elements that you join at their start-points and/or end-Points. To be a sketch-path, it is important that you merge the start-Points and/or end-Points of adjacent sketch-elements. |
Sketch-Loop : |
A sketch-loop is a closed sketch-path. Also, the sketch-element cannot cross over or touch each other. There cannot be a Branch in which you merge three or more Points from three or more sketch-element. |
Merged-Points: |
Two start-Points, or two end-Points that you merge into one Point. |
Tutorial 3: Add a Sketch-Loop to a Part.
➔Step 3.1: New Plane, New Mechanism, New Part ➔Step 3.2A: About Coincident Constraints and Merge-Points. ➔Step 3.2B: Add Lines & Arcs as a Sketch-Loop ➔Step 3.3: Add Tangent Constraints ➔Step 3.4: Add Coincident Constraints ➔Step 3.5: Add Parallel Constraints and Dimensions |
Tutorial 3: STEP 3.1
Tutorial 3: STEP 3.2 Tutorial 3: STEP 3.3 to STEP 3.6
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