Crankshaft, Flywheel Mounting Flange, Shaft, Main Bearings, and Keyway (i4 Engine)

Annawfal Rizky

18 Apr, 2022 06:52 PM

Tutorial to construct the crankshaft, Flywheel Mounting Flange, Shaft, Main Bearings, and Keyway of a i4 Engine that will be Connected with the 4 Cylinder Pistons by using the connecting Rod Visualization and Modelling Muhammad Annawfal Rizky Sihotang 2106718281

1. Step 1: Step 1: Start Constructing Using XY Plane

   

2. Step 2: Make Construction Rectangle

   By making this rectangle construction, will be a lot more easier to find the center for the next sketch steps

   

3. Step 3: Sketching counterweights

   Sketch a circle from the center point with 44 mm distance and 72 mm for the diameter

   

   • Draw line on each side of the circle
   • Connect the line using the arc tools
   • Set the dimension at 33 mm for the line
   • Set the tangent at 80 for the arc line
   • To make the line parallel for both side and the circle, the Constraint tangent can be used
   • To make the edges symmetric, the Symmetric constraint can be used

   

4. Step 4: Extruding Counterweights

   Extrude the sketch with 15 mm thick to make the counterweights

   

   
   

5. Step 5: Sketching CrankPin

   Sketch Circle with 72 mm diameter on the front side of the Counterweights

   

   For the backside, Sketch a circle with a 54 mm diameter

   

   
   

6. Step 6: Extruding Crankpin

   Extrude The Front Crankpin with 38 mm thick and the Back Crankpin with 46 mm

   

   
   

7. Step 7: Mirroring Counterweights

   Using the Midplane between the Crankpin and the counterweight, make a new work plane

   

   After making a new work plane Use the Mirror tool to duplicate the Counterweights

   

   

   
   

8. Step 8: Reverse Counterweight

   SKETCH

   Sketch the counterweights but in opposite ways from the parts before

   • Sketch a circle with 72 mm diameter
   • Draw a arc line with the same degree like the counterweights before
   • Connect the arc line with the circle with a line that symmetric from the left and right side

   EXTRUDING

   • Extrude the surface with 15 mm thick

   CRANKPIN

   • Draw a circle with 54 mm diameter and extrude it with 46 mm thickness
   • Using the midplane, mirror the reverse counterweight
   • Draw the next circle on the bottom part of the counterweight with 72 mm diameter and extrude with 38 mm thick
   1. Ste

   
   

9. Step 9: Final Mirroring

   Make a midplane for the final mirroring

   

   Select all the parts before and use the mirror tool to duplicate and finish the crankshaft body

   
   

10. Step 10: Flywheel Mounting Flange

    SKETCHING

    • Draw a circle with 144 mm diameter at the left side of the crankshaft
    • Draw a construction circle with 110 mm diameter
    • Create a small circle with 10 mm diameter
    • By using the circular pattern tool, create 8 circle around the construction circle that have been created

    

    EXTRUDING

    • Extrude the big circle with 15 mm thickness

    

    
    

11. Step 11: Shaft, Keyway, Main Bearings

    Shaft and Main Bearings 

    • Start 2d sketch on the left side of the Crankshaft
    • Draw a circle with 72 mm diameter
    • Extrude with 38 mm Thick

    

    Keyway

    • Create a circle with 32 mm diameter in the Shaft Surface
    • Extrude with 80 mm thick

    

    
    

    
    

12. Step 12: Fillet

    Fillet all the edges, as shown in the picture below with 3 mm for the radius edges