Example Ping-Pong Ball Launcher

Transcription

1 Example Ping-Pong all Launcher Unleash Your reativity!

2 Parts List (parts for each launcher Part escription QTY Picture Long Link Strip 0 dditional Equipment Needed Part escription QTY TeacherGeek Easy Engineering Tool Pack owel 5 Perpendicular daptor 5 Paper up Rubber ands ~4 # Screws 6 Slide Stop Material Inches dditional Supplies Needed Part escription QTY Ping Pong all String roll Rulers /student Masking Tape roll Paper lips /student ard Stock Sheets (heavy weight paper) SETY GLSSES /student /student! Think Safety! Wear safety glasses when working on or using your launcher. opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page

3 Kit an e a ad Word: on t think of this as a kit. Think of it as a bag full of endless solutions. lthough the end of this guide contains step-by-step instructions for creating a launcher, we encourage you (your students) to try and develop new and different designs. ecause, in design and engineering, there is never one right answer TeacherGeek Easy Engineering Series products are designed to encourage innovation and alternative designs. We encourage you to use the Easy Engineering omponents to create your own brilliant solutions. ecause, your first idea is rarely your best TeacherGeek Easy Engineering Series products are designed to be redesigned; they allow you to quickly change and evolve your designs. ecause, possibilities are endless TeacherGeek Easy Engineering omponents can be easily combined with other materials and products (Raid the recycling bin, wood, metal, broken toys, etc.) Other ocuments That Will Help You With This ctivity: ownload ocument: Path: ccess ode: Easy Engineering Guide teachergeek.org/easy_engineering_guide.pdf No ode Required Launcher Protractor teachergeek.org/protractor.pdf No ode Required Easy Engineering Ruler teachergeek.org/ruler.pdf No ode Required owels vary in diameter because they are made of wood. We have provided you with extra dowels to make up for dowels which may be too large or too small to use. opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page

4 owels and Holes Easy Engineering omponents come with holes that are the perfect size for a press fit with dowels. press fit is one where the dowel is fixed and not able to rotate or slide once it s in the component hole. press fit is good for creating rigid structures. Press fits are good for structural connections. Reaming Holes Press fits are good for gears, pulleys and levers that turn together on the same dowel (axle). Learn how to use a reamer on page 5 Slide it Slide Reamer makes it easier to push or pull a dowel through a hole. *Having trouble getting a dowel into a hole? Ream it with the Slide Reamer. Loose it The Loose Reamer creates a hole that dowels can freely rotate in and slide through. loose fit is typically used to support axles, wheels and pulleys. It is also used for pivot points. The crank and pulley are press fit onto the same dowel (so they turn together). The dowel moves freely in the loose fitting hole. This hole in the perpendicular adaptor was reamed with the Slide Reamer to make it easier for it to slide to the middle of the dowel. The link strip holes that the dowel needs to rotate in were reamed with the Loose Reamer. The Loose Reamer creates a hole that is larger than the dowel. opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page

5 How to Ream Holes Screws Pull and push the reamer in and out of the hole. Turn the reamer inside the hole. Screws can be used to attach two components together. The hole the screw will enter first must be reamed loose. L To further enlarge a hole, as you ream it, move the end of the reamer around so it is not in line with the hole. Slide-Stop Material The hole the screw will enter second should not be reamed. Turn the screw into both components. Slide-Stop Material comes in long lengths. It must be cut into 6mm (~/4 ) sections before it can be used. Slide-Stop Material keeps dowels from sliding back and forth in loose reamed holes. Slide-Stop Material keeps components with loose reamed holes from sliding back and forth on dowels. *e careful not to over-tighten the screw and strip out the bottom hole. Tighten the screw completely to keep components from rotating. OR Leave the screw a ¼ turn from tight to allow components to rotate/pivot. opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page

6 Step : utting dowels ut your dowels to length. 90mm owel Length: owel Quantity: 5mm 8 90mm 50mm 80mm 50mm 50mm 80mm 5mm Step : utting Link-Strips ut your link-strips to length. 5.5mm 60mm 60mm Length: Quantity: 5.5mm 60mm 0mm 95mm 0mm 95mm 95mm opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page 6

7 5.5mm Step 3: ssembling The ody asten the two 95mm linkstrips ( and ), to the 5.5mm linkstrip ( ) with screws. asten perpendicular adaptors ( and E ) to the 95mm link-strips ( and ) using screws. 5.5mm E 95mm 95mm 95mm 95mm Step 3 finished 90mm Step 4: ssembling The ody Place dowels into linkstrips (as shown). Push the dowels down below the linkstrips into perpendicular adaptors from step 3 ( and E ) and new perpendicual adaptors ( and G ). E G opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page

8 Step 5: Reaming Loose Holes Ream hole in perpendicular adaptors. Use the loose reamer. x L Step 6: ssembling The ody Place the reamed perpendicular adaptors from step 5 ( and ) and two 60mm linkstrips ( and E ) onto dowels ( ). E Step 6 inished opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page 8

9 Step 7: Reaming Slide Holes Ream holes and in a perpendicular adaptor. Use the slide reamer. Ream holes and on the the the launcher body. Use the slide reamer. Step 8: reating a pivot point Place dowel ( E ) into a perpendicular adaptor ( ). Place the assembled dowel and perpendicular adaptor ( G ) into the launcher body ( H ). E H G Step 8 inished opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page 9

10 Step 9: ssemble The ase ssemble the 50mm dowel ( ), 80mm dowel ( ), 0mm link-strip ( ) and 3 perpendicular adaptors ( ) as shown. reate a pivot point placing 5mm dowel ( ) through perpendicual adaptors ( E ) on either side of linkstrip ( ). 50mm E E 5mm 80mm 0mm Use the slide reamer to get components to slide onto the dowels inished Step 0: ttaching THe ase To The ody ttach the body ( H ) (from step 8) to the base ( I ) (from step 9) using screws. H I opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page 0

11 Step : old it Up old over the assembly from step 0 onto itself. Slide the perpendicular adaptor onto dowel. Step : ssemble and Mark The Ram Place a 0mm section of slide-stop material ( ) and a perpendicular adaptor ( ) on the end of a 50mm dowel ( E ). raw a black mark on the dowel every 5mm, starting from. E Marks Every 5mm opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page

12 Step 3: Inserting The Ram Insert the ram ( ) (from step ) into the loose reamed holes in the launcher body ( ).. Step 4, inished Step 4: The Rubber and ttach the rubber band ( ).. opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page

13 Step 5: djust The ngle You can change the angle of your launcher by sliding the perpendicual adaptor up and down the dowel. Step 6: reating an ngle inder 3 ut a 4 wire. end it so the end hooks around at the end ( ). ut a protractor ( ) from the Launcher Protractor Sheet. Punch a hole in the middle of the circles in the upper left hand corner of the protractor. You can download additional protractor sheets at: *best printed on cardstock Place the hook end of the wire into the hole in the corner of the protractor. + = 3 opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page 3

14 Step 7: ttaching The ngle inder Tape or glue the angle finder ( ) (from step 6) onto the 90mm dowel on the launcher. The straight lines on the side of the angle finder must be parallel with the dowel Step 8: Using The ngle inder Make sure that the wire hanging in front of the angle finder ( ) is perfectly straight. Set the launcher on a table top. The angle of the launcher is the number the wire falls to on the protractor. opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page 4

15 Tip: Numbering The Ram Markings The markings on the ram allow you to measure the distance the ram is pulled back prior to firing. It is a good idea to sequentally number the ram marks. You can use them to adjust the power of the ram, and to fire consistantly. Your Launcher is omplete!!! It s time to start shooting ping-pong balls! opyright TeacherGeek - Ping-Pong all Launcher ctivity - ll Rights Reserved Page 5