L10_F10 - Design Intent Effectively using Constraints in...

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Design Intent: Effectively using Constraints in SolidWorks and Materials in AMTs Lecture 10
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Examples http://idletigers.files.wordpress.com/2008/01/lego-bricks-high-resolution.jpg http://www.allanblock.com/retainingwalls/Installation/Landscape/build/image/AngleOfRepose76.jpg http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fibnat.html http://www.unbeatable.co.uk/articles/jvclt46dz7.jpg 16:9
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M10 - 3 Tech 106: Design Intent and Materials in AMT Objectives Introduce concept of design intent using constraints Constraints on parts Constraints on assemblies Selecting and using materials for AMTs
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DESIGN INTENT Introduce concept of design intent using constraints Constraints on parts Constraints on assemblies
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M10 - 5 Tech 106: Design Intent and Materials in AMT A Square? What is a square? Square in SolidWorks 1. Draw a rectangle 2. Select one edge and define length using SmartDimension 3. Select the perpendicular edge and set relationship with the previous edge as ‘equal’ 4. Result: square! A special rectangle with the sides and its diagonals meet at right angles; or All sides have equal size |AB| = |BC| = |CD| = |DA|
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M10 - 6 Tech 106: Design Intent and Materials in AMT Constraint Constraint refers to the degree of logical or mathematical dependence between or among variables. In modeling we define geometry of objects, particularly: Size Location Orientation Example model for demonstrating constraints
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M10 - 7 Tech 106: Design Intent and Materials in AMT Types of Constraints Size Location Orientation Explicit defined by user AD = AB Radius = AB / 4 Size=40 Center point on midpoint of diagonal Angle ABC and BAC = 90° Implicit selected by user Equal Concentric Parallel
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M10 - 8 Tech 106: Design Intent and Materials in AMT Implicit Constraints Closure Segment Overlap Endpoint / Line Overlap Tangency Parallelism Perpendicular Same Size Concentric Coincident
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M10 - 9 Tech 106: Design Intent and Materials in AMT Explicit Constraints on Sketch A: Create rough sketch B: Define parameters (P i )and constraints on dimensions C: Edit parameters to adjust geometry D: Generate part using extrusion!
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M10 - 10 Tech 106: Design Intent and Materials in AMT Explicit Constraints on Parts Defined by user and applied by system Dimensional Constraint: Specific size or location of an element controlled by a variable, parameter A: without constraints defined B: P1 used as base parameter, P2 derived form P1 (P2 = P1/2) C: Change in P1 result in change in the model
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M10 - 11 Tech 106: Design Intent and Materials in AMT Demo Let’s make a ‘cube’ with a hole through it!
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M10 - 12 Tech 106: Design Intent and Materials in AMT Setup to Sketch a Rectangle Select ‘Sketch’ Select ‘Top Plane’ to draw rectangle
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