SolidWorkS 12 iNCliNE PlANE SiMPlE MACHiNES PAgE 8-1

Simples Machines

Incline Plane A. Save As.Step 1. If necessary, open your Wheels and Axle Assembly file.

Step 2. Click File Menu > Save As.

Step 3. Key-in INCLINE PLANE for the filename and press ENTER.

B. Delete Track 6.Step 1. Click Model tab at the bottom left

of the drawing area.

Step 2. Delete Track 6, Fig. 1 and Fig. 2. To delete, click Track 6 in drawing area and press Delete key.

C. Mate: Wheels, Body and Track 15.

Step 1. Click Mate on the Assembly toolbar.

Step 2. Click cylindrical face of front Wheel and top face of Track 15, Fig. 2.

Step 3. Click Add/Finish Mate in Mate pop-up toolbar to add a Tangent mate.

Step 4. Click cylindrical face of rear Wheel and top face of Track 15, Fig. 3.

Step 5. Click Add/Finish Mate in Mate pop-up toolbar to add a Tangent mate.

Step 6. Rotate view to view rear face of Truck Body as shown in Fig. 4. To rotate, hold down middle mouse button (wheel) and drag.

Step 7. Click rear face of Truck Body (tail gate) and rear face of Track 6, Fig. 4.

Step 8. Click Add/Finish Mate in Mate pop-up toolbar to add a Coincident mate.

Step 9. Click Isometric on the View toolbar. (Ctrl-7)

Chapter 8

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Step 10. Click OK in the Property Manager.

Step 11. Save. Use Ctrl-S.

D. Insert Track Parts.

Step 1. Click Insert Components on the Assembly toolbar.

Step 2. Click Keep Visible in the Property Manager.

Step 3. Click Browse in the Property Manager.

Step 4. Select your TRACK 6 file and click Open.

Step 5. Place Track 6 as positioned in Fig. 5. Browse and insert TRACK 36. Use the Z key to zoom out. Click OK in the Property Manager when done.

E. Mate: Tracks.

Step 1. Click Mate on the Assembly toolbar.

Step 2. Click side face of Track 15 and side face of Track 6, Fig. 6.

Step 3. Click Add/Finish Mate in Mate pop-up toolbar to add a Coincident mate.

Step 4. Click top front edge of Track 15 and top rear edge of Track 6, Fig. 7.

Step 5. Click Add/Finish Mate in Mate pop-up toolbar to add a Coincident mate.

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SolidWorkS 12 iNCliNE PlANE SiMPlE MACHiNES PAgE 8-3

Step 6. Click top face of Track 15 and top face of Track 6, Fig. 8.

Step 7. Click Angle in Mate pop-up, Fig. 9. Set angle to 25 and press ENTER. Track 6 should angle up in the front, Fig. 10. If positioned in opposite direction,

click Flip Dimension in the Mate pop-up, Fig. 9. Click Add/Fin-

ish Mate to add the Angle mate.

Step 8. Click side face of Track 15 and side face of Track 36, Fig. 10.

Step 9. Click Add/Finish Mate in Mate pop-up toolbar to add a Coincident mate.

Step 10. Click top face of Track 15 and top face of Track 36, Fig. 11.

Step 11. Click Add/Finish Mate in Mate pop-up toolbar to add a Coincident mate.

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Fig. 9

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Step 12. Click rear vertical edge of Track 36 and front vertical edge of Track 15, Fig. 12.

Step 13. Click Distance in Mate pop-up, Fig. 13. Set distance to 12 and press ENTER. The Track 36 should extent out 12 from Track 15, Fig. 16. If positioned in opposite direction, click Flip Dimension

in the Mate pop-up, Fig. 13.

Click Add/Finish Mate to add Distance mate.

Step 14. Click OK in the Property Man-ager when done.

Step 15. Save. Use Ctrl-S.

F. Contact.Step 1. Click Motion Study 1 tab at the bottom left of the

drawing area.

Step 2. Click Yes to update affected Keys.

Step 3. Double click Solid Body Con-tact 1 Key Point at Time = 0 in the Motion Manager Time-line, Fig. 14.

Step 4. In the Property Manager set: expand Selections, Fig. 15 click in the Track group box and click new Tracks, Track 6 and Track 36, Fig. 16 uncheck Material, Fig. 15 under Friction

Dynamic Friction Velocity to .4

Dynamic Friction Coefficient to .8

uncheck Static Friction click OK .

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SolidWorkS 12 iNCliNE PlANE SiMPlE MACHiNES PAgE 8-5

G. Add Motor.Step 1. Click Motor on the Motion Manager toolbar, Fig. 21.

Step 2. In the Motor Property Manager set: under Motor Type, Fig. 17 select Rotary Motor

under Component/Direction for Motor Location click the cylindrical face of rear Wheel, Fig. 18 for Motor Direction Motor direction arrow should point CCW , Fig. 18. If arrow is pointing in wrong direction, click Reverse

Direction , Fig. 17. click in Component to Move Relative to box, Fig. 17 click Track 15, Fig. 18 set RPM to 500 and click OK .

H. Change View.Step 1. Change view for the Motion Study. We will first

disable View Key, rotate view, then enable View

Key. To change view, right click Orientation and Camera Views in the Motion Manager design tree and click Disable View Key Creation, Fig. 19.

Step 2. Click Right on the Standard Views toolbar (Ctrl-4) and down arrow key on key-board to rotate view, Fig. 20. Use Shift-Z until assembly zooms to fit on screen.

Step 3. Right click Orientation and Camera Views in the Motion Manag-er design tree and click Disable View Key Creation, Fig. 21.

Fig. 20

Fig. 18

Fig. 17

Direction arrow CCW

Move Relative

To

Motor location

Fig. 19

Fig. 21

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I. Suppress Mates.

Step 1. Click Zoom in in lower right corner of the Motion Manag-er to increase the Time Bar with finer time increments, Fig. 22.

Step 2. Set the Motion Study duration to 1.5 seconds on the Timeline. To change duration, in the top Timeline drag the Key at 1 seconds to 1.5 seconds, Fig. 23.

Step 3. Expand TRUCK ASSEMBLY in the Motion Manager design tree and expand Mates in WHEELS AND AXLE ASSEMBLY, Fig. 23.

Step 4. Suppress the 3 Mates that are not Suppressed. To suppress the Mates, click the first Mate, then hold down the Shift key and click the last Mate. Release the Shift key, right

click and click Suppress from the menu, Fig. 23.

Step 5. Save. Use Ctrl-S.

J. Calculate and Play.

Step 1. Click Calculate and Play from Start on the Motion Manager toolbar.

Step 2. Click Play from Start on the Motion Manager toolbar, Fig. 24.

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K. Motor 7000 rpm at T = .3.Step 1. Set Time Bar to .3 seconds. To set Time Bar, drag the Time Bar, the gray vertical line to .3

in the Timeline, Fig. 25.

Step 2. Right click the RotaryMotor1 Timeline at Time = .3 and click Place Key in menu, Fig. 25.

Step 3. Double click new Key Point at Time = .3 in the RotaryMotor1 Timeline, Fig. 26.

Step 4. In the Motor Property Manager set: Speed RPM to 7000 Fig. 27

click OK .

Step 5. Click Calculate and Play from Start on the Motion Man-ager toolbar, Fig. 28.

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L. Mate Center Planes.Step 1. Set Time Bar to Time = 0. To set Time Bar, drag

the Time Bar, the gray vertical line to 0 in the Time-line.

Step 2. Click Model tab at the bottom left of the Motion Manager Timeline.

Step 3. Click Right Plane in the Feature Manager and

click Mate from the Content toolbar, Fig. 29.

Step 4. Expand the Design Tree, Fig. 30.

Step 5. Expand TRUCK ASSEMBLY and click Right Plane, Fig. 30.

Step 6. Click Add/Finish Mate

in Mate pop-up toolbar to add a Coincident mate.

Step 7. Click OK in the Property Manager.

Step 8. Click Motion Study 1 tab at the bottom left of the drawing area.

Step 9. Click Calculate and Play from Start on the Motion Manager toolbar, Fig. 32.

Step 10. Save. Use Ctrl-S.

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M. Slow Motor and Turn Off Motor to Brake.Step 1. Next, turn off the Motor once the Truck leaves the launch ramp so Wheels coast when

Truck lands. To Turn off Motor, drag Time Bar to where Truck leaves ramp, around T = .6, Fig. 33.

Step 2. Right click the RotaryMotor1 Timeline at T = .6 and click Off in menu, Fig. 33.

Step 3. After the Truck lands, turn Motor on and slow Motor to 500 RPM. To turn on and slow Motor, drag Time Bar to T = .8, right click the RotaryMotor1 Timeline at T = .8 and click On in menu, Fig. 34.

Step 4. Double click new Key Point at T = .8 in the RotaryMotor1 Timeline, Fig. 35.

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Fig. 34

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SolidWorkS 12 iNCliNE PlANE SiMPlE MACHiNES PAgE 8-10

Step 5. In the Motor Property Manager set: Speed RPM to 500 Fig. 36 click OK .

Step 6. Place new Key Point on RotaryMotor1 Timeline T = 1 and double click new Key Point, Fig. 37.

Step 7. In the Motor Property Manager set: Speed RPM to 0, Fig. 38 and click OK . At 0 RPM's the Motor will act as brake.

Step 8. Click Calculate and Play from Start on the Motion Man-ager toolbar, Fig. 39.

Step 9. Summary of Key Points and RPMs shown in Fig. 40.

Fig. 36

Fig. 37

Fig. 38

Fig. 39

Fig. 40

T = 0 500 RPM

T = .3 7000 RPM

T = .6 7000 RPM OFF

T = .8 500 RPM ON

T = 1 0

RPM

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N. Results and Plots.Step 1. Rotate the view to view the cylindrical face of front Wheel, Use

down arrow key on keyboard on time to rotate view, Fig. 42.

Step 2. Click Results and Plots on the Motion Manager toolbar.

Step 3. In the Property Manager set: under Result, Fig. 41 Category to Forces Sub Category to Contact Force Result Component to Magnitude

for Feature cylindrical face of front Wheel and top face of Track 36, Fig. 42

click OK .

Step 4. What's the Force?

Step 5. Save. Use Ctrl-S.

O. Add Ramp Angle 25 Plot to Word Document.Step 1. Right click the

Plot2 and click Copy Clip-board, Fig. 43.

Step 2. Open up your Word file from Chapter 7.

Step 3. Key-in: Ramp Angle 25 degrees Force Front Wheel Contacts Track 36into Word document, Fig. 44.

Step 4. Paste (Ctrl-V) Plot1 into Word document, Fig. 44.

Step 5. Switch back to SolidWorks.

Fig. 41Components

having contact

Fig. 42

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P. Change Ramp Angle.Step 1. Rewind Motion Study to T = 0.

Step 2. Expand TRACK 6 and expand Mates in INCLINE PLANE in Motion Manager design tree, Fig. 45.

Step 3. Double click Angle1 Mate, Fig. 45

Step 4. Change Angle to 15 in the Modify dialog box and click OK , Fig. 46.

Step 5. Click Calculate and Play from Start on the Motion Man-ager toolbar.

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Step 6. We need to slow motor earlier in Timeline. Change Key Point at T = .8 to .71 in the RotaryMotor1 Timeline. You can drag the Key Point or right click Key Point at T = .8 and click Edit Key Point Time, Fig. 47.

Step 7. Change Time to .71 in the Edit Time dialog box and click OK , Fig. 48.

Step 8. Click Calculate and Play from Start on the Motion Man-ager toolbar, Fig. 49.

Step 9. What's the Force?

Fig. 47

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Q. Add Ramp Angle 15 Plot to Word Document.Step 1. Right click the

Plot4 and click Copy Clip-board, Fig. 51.

Step 2. Switch to your Word document (Alt-Tab).

Step 3. Key-in: Ramp Angle 15 degrees Force Front Wheel Contacts Track 36into Word document, Fig. 52.

Step 4. Paste (Ctrl-V) Plot1 into Word document, Fig. 52.

Step 5. Switch back to SolidWorks (Alt-Tab).

Step 6. Save. Use Ctrl-S.

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Fig. 52