The IED Automata Sequence�It’s not that scary…
MASS STEM HUB/WPI AUGUST REFRESHER DAY
Corey Duzan�PLTW IED Master Teacher
APB in the IED Curriculum/Sequence
LESSON 4.1-YOU’VE GOT TO MOVE IT
LESSON 4.2-MAY THE FORCE
BE WITH YOU
LESSON 4.3-MAKE IT MOVE
Today’s Goals of Discussion/Engagement
Investigating various cams, gathering data, and creating graphs.
Create a motion graph for a custom cam, create a CAD model/drawing of a custom cam, and create a physical model of a custom cam.
Discuss a “first draft” Automata or use the rough prototype to test your custom cam.
Create an Automata Teaching Model that helps explain various cams and also shows the mechanics of an Automata.
Recommended Tools for Automata Teacher Kit Build:
CUTTING MAT
BALSA CUTTER
SAFETY GLASSES
HOT GLUE GUN
SANDPAPER
UTILITY KNIFE
TACKY GLUE
Automata Teacher Kit Contents:
Automata Teacher Kit Contents:
AUTOMATA BOX
Quantity: 1
Automata Teacher Kit Contents:
AXLE
Quantity: 1
CRANK HANDLE PEG
Quantity: 1
Automata Teacher Kit Contents:
ECCENTRIC CAM
Quantity: 1
CRANK HANDLE
Quantity: 1
Automata Teacher Kit Contents:
PEAR CAM
Quantity: 1
HEXAGON CAM
Quantity: 1
Automata Teacher Kit Contents:
ARROW INDICATOR
Quantity: 4
SNAIL CAM
Quantity: 1
Automata Teacher Kit Contents:
HEXAGON CAM TAG
Quantity: 1
ECCENTRIC CAM TAG
Quantity: 1
Automata Teacher Kit Contents:
PEAR CAM TAG
Quantity: 1
SNAIL CAM TAG
Quantity: 1
Automata Teacher Kit Contents:
ROD GUIDE
Quantity: 4
SHAFT COLLAR
Quantity: 2
Automata Teacher Kit Contents:
VELCO STRIP SET
Quantity: 4
FOLLOWER
Quantity: 4
Remove the front panel of the Automata Box.
Check the clearance of all Follower Rods and Rod Guides. Your Follower Rods should fall freely through the Rod Guides. THIS IS A CRITICAL STEP!
Add glue to the outside of the Rod Guide (see blue highlighted area below) and snap the Rod Guide into the top panel of the Automata Box. Wipe off any excess glue on the top panel.
GLUE
Make sure that all Rod Guides are Flush and that the square holes are 90 degrees to the front and side panels of the Automata Box.
INCORRECT
CORRECT
INCORRECT
CORRECT
Hint: When adjusting your Rod Guides, the Follower Rod makes a great wrench to get the Rod Guide into the correct orientation.
Glue the Shaft Collar to the end of the Axle. Keep the Shaft Collar perpendicular to the Axle when you glue it in place. Be sure to wipe off excess glue from the Axle and Shaft Collar and allow it to dry before proceeding to the next step.
INCORRECT
CORRECT
GLUE THE END OF THE AXLE AND INSERT IT INTO THE SHAFT COLLAR
Verify that the glue is dry and that the Shaft Collar is perpendicular to the Axle and slide the Axle subassembly into the Automata Box. Slide all Cams into place while you are doing this step.
The Shaft Collar/Axle subassembly should spin independently from the Automata Box. DO NOT GLUE THE AXLE/SHAFT COLLAR SUBASSEMBLY DIRECTLY TO THE AUTOMATA BOX.
Snail Cams are unidirectional. The orientation of the Snail Cam will have an impact on the direction that you crank the Crank Handle after it is installed. There is no wrong way on the orientation. This is the designer/user’s preference.
AUTOMATA RIGHT SIDE
AUTOMATA RIGHT SIDE
AUTOMATA
FRONT
SIDE
AUTOMATA
FRONT
SIDE
CLOCKWISE
ROTATION
COUNTER
CLOCKWISE
ROTATION
NOTE: THE RIGHT PANEL ON THE AUTOMATA BOX HAS BEEN REMOVED IN THE ILLUSTRATIONS.
NOTE: FOLLOWER RODS AND FOLLOWERS HAVE STILL NOT BEEN INSERTED AT THIS TIME. THEY ARE ONLY SHOWN TO HELP US PLAN FOR THE FUTURE.
Alternative View of Counterclockwise and Clockwise rotation of the Snail Cam.
COUNTERCLOCKWISE
ROTATION
CLOCKWISE
ROTATION
NOTE: FOLLOWER RODS AND FOLLOWERS HAVE STILL NOT BEEN INSERTED AT THIS TIME. THEY ARE ONLY SHOWN TO HELP US PLAN FOR THE FUTURE.
Make sure that all Cams have been glued�into place and placed perpendicular to the Axle.
NOTE: FOLLOWER RODS AND FOLLOWERS HAVE STILL NOT BEEN INSERTED AT THIS TIME. THEY ARE ONLY SHOWN TO HELP US PLAN FOR THE FUTURE.
INCORRECT
CORRECT
Glue the Crank Handle Peg into the Crank Handle. Please note the laser engraved line on the face of the Crank Handle. The laser engraved line should be on the same side of the Crank Handle Peg.
GLUE
THE END OF THE CRANK HANDLE PEG AND INSERT INTO THE CRANK HANDLE
NOTE: MAKE SURE THAT THE CRANK HANDLE PEG IS PERPENDICULAR TO THE CRANK HANDLE AND ALLOW THE GLUE TO DRY BEFORE PROCEEDING TO THE NEXT STEP.
Place and glue the Crank Handle subassembly onto the Axle. Place and glue the Shaft Collar onto the Axle and Crank Handle. Wipe away an excess glue. DO NOT GLUE THE SUBASSEMBLY DIRECTLY TO THE AUTOMATA BOX
NOTE: FOLLOWER RODS AND FOLLOWERS HAVE STILL NOT BEEN INSERTED AT THIS TIME. THEY ARE ONLY SHOWN TO HELP US PLAN FOR THE FUTURE.
GLUE THE CRANK HANLE PEG AND SHAFT COLLAR ONTO THE AXLE
The Crank Handle/Shaft Collar subassembly should spin independently from the Automata Box. DO NOT GLUE THE SUBASSEMBLY DIRECTLY TO THE AUTOMATA BOX.
NOTE: FOLLOWER RODS AND FOLLOWERS HAVE STILL NOT BEEN INSERTED AT THIS TIME. THEY ARE ONLY SHOWN TO HELP US PLAN FOR THE FUTURE.
Insert all Follower Rods through Rod Guides, add glue (Hot Glue) into the bottom of the holes in the Followers, and insert the Follower Rods.
NOTE: FOLLOWERS SHOWN WILL LOOK DIFFERENT THAN THE ONES THAT CAME WITH YOUR KIT. HOWEVER, THE FOLLOWERS WILL WORK THE SAME.
GLUE THE FOLLOWER RODS INTO THE FOLLOWERS
Slightly rotate your Followers (5 degrees or so) when gluing (Hot Glue) in the Follower Rod to ALL Followers. This adjustment should help keep the Follower Rod and Cam from binding. Be sure to make this adjustment according to the direction that your Crank Handle spins.
AUTOMATA RIGHT SIDE
AUTOMATA RIGHT SIDE
AUTOMATA
FRONT
SIDE
AUTOMATA
FRONT
SIDE
CLOCKWISE
ROTATION
COUNTER
CLOCKWISE
ROTATION
NOTE: THE RIGHT PANEL ON THE AUTOMATA BOX HAS BEEN REMOVED IN THE ILLUSTRATIONS.
NOTE: FOLLOWERS SHOWN WILL LOOK DIFFERENT THAN THE ONES THAT CAME WITH YOUR KIT. HOWEVER, THE FOLLOWERS WILL WORK THE SAME.
5 Degrees
5 Degrees
Apply Hot Glue to the bottom of the Arrow Indicator hole and attach the Arrow Indicators to the top of the Follower Rods. Make sure that the Arrow Indicators are pointing to the LEFT.
HOT GLUE
THE ARROW INDICATORS TO THE TOP OF THE FOLLOWER RODS
Attach adhesive Velcro strips to the back of the Cam Tags.
NOTE: VELCRO STRIPS SHOWN WILL LOOK DIFFERENT THAN THE ONES THAT CAME WITH YOUR KIT. HOWEVER, THE VELCRO STRIPS WILL WORK THE SAME.
Attach adhesive Velcro strips to the front of the Follower Rods.
NOTE: VELCRO STRIPS SHOWN WILL LOOK DIFFERENT THAN THE ONES THAT CAME WITH YOUR KIT. HOWEVER, THE VELCRO STRIPS WILL WORK THE SAME.
Attach Cam Tags to the Follower Rods.
Insert the metal ruler into a slot and reattach the front panel of the Automata Box.
NOTE: eboot METAL RULERS WERE USED FOR THE TOP PANEL DESIGN OF THE AUTOMATA BOX. PLEASE CLICK ON THE IMAGE TO THE LEFT FOR THE PURCHASE LINK.
How do I create Parametric Cams in Fusion 360?
Eccentric Cam Video Tutorial
Pear Cam Video Tutorial
Hexagon Cam Video Tutorial
Snail Cam Video Tutorial
Courtesy of Craig Hughes’ YouTube Channel
How do I create Parametric Cams in Autodesk Inventor?
Eccentric Cam Video Tutorial
Pear Cam Video Tutorial
Hexagon Cam Video Tutorial
Snail Cam Video Tutorial
Courtesy of Mark Mcallister’s YouTube Channel
How do I create Parametric Cams in Onshape?
Eccentric Cam Video Tutorial
Pear Cam Video Tutorial
Hexagon Cam Video Tutorial
Snail Cam Video Tutorial
Courtesy of Billy Garrett’s YouTube Channel
How do cams work?�Let’s perform a Cam Study.
SNAIL CAM
HEXAGON CAM
ECCENTRIC CAM
PEAR CAM
Cam Study�Materials Needed:�
COMPUTER WITH YOUR PREFERRED CAD SOFTWARE
DOWNLOAD
YOUR
PREFERRED
SPREADSHEET
BY CLICKING
ON THE LOGO
TO THE LEFT
Eccentric Cam Study�Download the assembly for your CAD platform of choice by picking on the software logo below.
Pear Cam Study�Download the assembly for your CAD platform of choice by picking on the software logo below.
Hexagon Cam Study�Download the assembly for your CAD platform of choice by picking on the software logo below.
Snail Cam Study�Download the assembly for your CAD platform of choice by picking on the software logo below.
Cam Study Spreadsheet Exemplars
ECCENTRIC CAM
PEAR CAM
HEXAGON CAM
SNAIL CAM
Cam Study Presentation Exemplars
Let’s create a custom cam!�Materials needed:
Custom Cam Video Tutorial
Custom Cam CAD Template�Pick on the CAD platform of your choice to access the link or file to the Custom Cam CAD Template.
Custom Cam Project Documentation/�Shoebox Automata Example
How do I assemble an Automata assembly in Fusion 360?
Automata Simulation: Installing Cams and Setting Tangent Relationships
��
Courtesy of Craig Hughes’ YouTube Channel
How do I assemble an Automata assembly in Autodesk Inventor?
PLTW Automata Design Challenge ADVANCED Box Assembly, Parts, and Part Assembly
��
Courtesy of Corey Duzan’s YouTube Channel and Cam Box Engineering Website
How do I assemble an Automata assembly in Onshape?
LTHS IED Automata Assembly Video Tutorial (Onshape)
��
Courtesy of Corey Duzan’s YouTube Channel
Problem 4.4.1-All Together Now�Example
Problem 4.4.1-All Together Now�Example
DOWNLOAD THE BUSHING AND MOTOR MOUNT FILES (IPT and STL) BY PICKING THE GOOGLE DRIVE ICON ON THE LEFT
THANK YOU!
I hope that you have enjoyed being engaged with this session as much I have planning and leading it!