240 likes | 499 Views
Parametric Modeling. Fundamental s of Autodesk Inventor. Sketches. The basic unit of design is the sketch They are not required to be precise, but it will make your life easier if you follow the basic rules below Create a sketch that is proportional to the desired shape
E N D
Parametric Modeling Fundamentals of Autodesk Inventor
Sketches • The basic unit of design is the sketch • They are not required to be precise, but it will make your life easier if you follow the basic rules below • Create a sketch that is proportional to the desired shape • Think about how you want your design to relate to the origin and other work planes • Keep the sketches simple • Sketched geometric entities should form a closed region
Constraints and Dimensions • Constraints describe how two shapes relate to each other • Dimensions tell something about a particular shape • We can get dimensions of length, angle, diameter, radius, etc.
Do 1 • Make a new standard.ipt • Turn on visibility • Save your work as d2.adjuster, save often • Make a new sketch on the XZ plan • Use the line tool to make a basic sketch in the lower left center of the graphics window • As you draw the shape look at the constraints that are implemented as you draw
Do 2 • Use the dimension tool to add the Dimensions as shown • Click Finish Sketch • If we want to go back and edit this sketch, double click on Sketch1 on the browser
Do 3 • Extrude the shape 2.5 inches, as shown
Do 4 • Now we will add another extruded feature. Based on the top face of the solid model we just extruded. • Click New 2D sketch • Then choose the top face • This will make a workplane based off of the top face. Anything we draw will be matched up to that surface.
Do 5 • Draw an L in similar orientation to the original object
Do 6 • Add the basic dimensions
Do 7 • Add Some special dimensions • These describe the position of the sketch relative to the top corner of the solid model • These are really important to get right, ask for help if needed • Between the two vertical lines • Between the two ‘tops’
Do 8 • Set both of those new dimensions to 0
Do 9 • Finish the Sketch, then Extrude it down 2.5 • Make sure you extrude in the correct direction, use the arrows under the distance to change the direction
Do 10 • We will now add a Cut Feature • Add a new sketch • Choose the face shown
Do 11 • Draw a circle of arbitrary size on the face
Do 12 • Add the dimensions shown • These show • The Size of the circle • Its position of the center relative to two edges
Do 13 • Finish the Sketch • Click Extrude • This time we are going to do a Cut • Click the Cut Icon • Set the extents to All so it goes all the way through the shape • Click Finish
You’re Done with This One • Save your work as d2.adjuster • Two more exercises to go
Exercises d2.notched plate d3.slider