Correcting the Stationary Part and Modeling the Screw in SolidWorks

Welcome back to the Multibody Dynamics using SolidWorks blog series! In this blog, part of the Multibody Dynamics using SolidWorks series, we’ll address a correction on the stationary part and learn how to model the bench screw component. Correcting design errors and modeling complex parts are crucial for accurate multibody dynamics assembly and simulation in SolidWorks. 

Let’s start! 

Step 1: Correcting the Stationary Part 

First, we need to address a correction in the stationary jaw component from a previous step: 

1. Open the Stationary Part: Right-click the stationary component in your assembly and select Open Part. 

2. Edit the Sketch: Navigate to Boss-Extrude 4, click on Sketch 8, and select Edit Sketch. You’ll notice incorrect dimensions that need updating. 

• Change 55 mm to 45 mm. 
• Change 115 mm to 105 mm. 

3. Save and Update: Once the changes are made, save the part and apply the changes when prompted to update the component in the assembly. These corrections ensure accuracy in your multibody dynamics assembly SolidWorks. 

Step 2: Modeling the Bench Screw 

Now, let’s move on to modeling the screw, which is essential for the movement of the sliding jaw in the machine vice assembly. 

1. Create a New Part: Go to File > New > Part, ensure your unit system is set to millimeters, and start sketching on the Front Plane. 

2. Sketch the Screw Head: Use the Polygon Tool to sketch the head of the screw. Set the number of sides to 6 (for a hexagonal shape). 

• Select the center point and drag out to create the hexagon. 
• Align the top point of the hexagon with the origin by applying a vertical constraint. 
• Dimension one edge of the hexagon to 10 mm using Smart Dimension. 

3. Extrude the Head: Once the sketch is fully defined, exit the sketch and extrude it by 20 mm. This forms the head of the screw. 

Step 3: Creating the Screw Shaft 

1. Sketch the Shaft: On the top face of the hexagonal head, create a new sketch. Use the Circle Tool to draw a circle from the center, setting the diameter to 9.5 mm. 
2. Extrude the Shaft: Once the circle is defined, exit the sketch and extrude it by 175 mm. This creates the cylindrical part of the screw. 

Step 4: Adding Threads to the Screw 

With the shaft in place, we can now add threads: 

1. Select the Thread Tool: Use the Thread Tool to apply threads to the outer surface of the cylindrical shaft. 

2. Define the Thread Properties: 

• Select the starting edge (the lower circle of the shaft) as the beginning point for the thread. 
• Set the end condition to Blind and enter 165 mm as the thread length. 
• Set the thread size to M16 x 1.5, which is a standard size that we’ll use for this screw. 

3. Finalize and Save: After applying the thread, save the part as bench screw part. This screw will be an essential element for the motion of the multibody dynamics assembly in our SolidWorks simulation. 

Conclusion 

In this blog, we’ve covered how to correct dimensions in existing parts and how to model a bench screw with both a hexagonal head and a threaded shaft. These steps are crucial for a functional multibody dynamics simulation of the machine vice assembly in SolidWorks. 

For further learning, consider exploring Skill-Lync’s Full Course on SolidWorks Training, which covers everything from SolidWorks basics to advanced multibody dynamics modeling and simulation tutorials for mechanical engineering.  

Stay tuned for more in our series on SolidWorks for students and professionals alike. 

This blog is part of our ongoing series on Multibody Dynamics. 

If you missed the previous posts, check them out here.   

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