What else do we need to really teach CIM? Are there any “extras” that you recommend?
We get this question weekly. So here’s what we are going to do. Give you a preview to a Google doc that is live so we can update it on the fly. You will see it right below this paragraph. Be sure to scroll left and right and up and down to see all of the content! Links are live too!
Since I switched from EdgeCAM to HSM, the vocabulary is a little different. Do you have any Key Terms that you use in your classroom that you wouldn’t mind sharing?
Of course not! The terminology is a little bit different when you switch from EdgeCAM to HSM, but the concepts are the same. PLTW has not updated their key terms in many years, but I have in my classroom. Please understand that these are definitions that I made up for use in my classroom; I do not utilize definitions from a dictionary. That being said, feel free to utilize the attached vocabulary list.
Tired of using the I.L.A.R method of finding the corner of your stock (It Looks About Right…). Then here’s the video for you! This video was made by Tormach, and it shows you how to utilize two different types of edge finders. Thanks Tormach!
This video demonstrates the use of a mechanical edge finder and an electronic edge finder. Essentially, an edge finder is a dynamic indicator of the location of a workpiece edge with reference to the centerline of the spindle to which it is attached. Both versions of the edge finder are used in a similar fashion. The edge finder is put in the rotating chuck and the edge of the workpiece is moved towards the chuck. As the lower cylinder of the edge finder touches the edge, that lower cylinder “kicks” to the left (assuming a clockwise rotation as seen from above). When the kick is observed, the axis of the spindle and the edge of the workpiece are located to 1/2 the diameter of the edge finder.
What’s the container project you ask? It’s a project done in CIM class that teaches many different facets of CIM including:
G & M Code, 3D Modelling, Manual machine operations, CNC machining, Secondary processing, Tolerances, Documentation, Mass Production techniques, Assembly operations, Order of operations, Costs of materials, Speeds & feeds….
Just to name a few… Here’s a short video done by one of my participants at the University of Kentucky Core Training Institute that gives a great visual representation of the steps required to go from start to finish. Thanks to Christopher Townsend,@BCHSEngrTechContinue Reading
What are the speeds and feeds that you use in your classroom while CNC machining?
That’s really a loaded question! It depends on a lot of different variables. With that said, below is a list of speeds, feeds, plunge rates, and general info I use when machining Renshape 440 or 450 in my classroom on an Intellitek Super Prolight 1000. I have used the same numbers consistently on the Benchmill 6000, as well as the ExpertMill. Note: These are conservative. As you should be in your classroom, especially as a first year teacher!
Thanks to Fred Routson for filling this out properly! I then went and added my two cents.
Caz Tool Attribute WorksheetContinue Reading