solidworks tutorial - how to make spur gear . specially for beginers.

Summary

This video provides a step-by-step guide to designing a spur gear using CAD software. It demonstrates creating a base circle, drawing and mirroring lines for the gear teeth, trimming and refining the tooth profile, and using a circular pattern to set the desired number of teeth. The tutorial then shows how to extrude the gear into 3D and assign a material, such as gray cast iron, to the part. With clear instructions and practical tips, viewers can follow along to model a functional spur gear while learning essential CAD tools and techniques for precise mechanical design.

Takeaways

• 😀 Start by drawing a base circle to form the foundation of the spur gear.
• 😀 Use midpoint and angled lines to create reference geometry for the gear teeth.
• 😀 Mirror lines appropriately to ensure symmetry in the gear design.
• 😀 Delete unnecessary lines after mirroring to clean up the sketch.
• 😀 Extend lines using tools like 'Xend entities' to connect geometry accurately.
• 😀 Trim excess line segments to define the gear tooth shape clearly.
• -
• 😀 Use the Sketch Pattern tool to replicate the gear tooth profile across the gear.
• 😀 Adjust the number of teeth as required, for example, setting it to 15.
• 😀 Draw a circle around the completed sketch before extruding the gear.
• 😀 Extrude the sketch to create a 3D gear model.
• 😀 Apply material properties, such as Gray Cast Iron, to the gear model.
• 😀 Review the final gear model and make adjustments if needed before saving.
• 😀 The video encourages viewers to like, share, comment, and subscribe for more content.

Q & A

What is the first step in creating a spur gear according to the script?

The first step is to draw a circle. This is the base for the spur gear.

What tool is used to create a line from the midpoint of the circle?

The 'midpoint' tool is used to create the line from the circle's midpoint.

How do you create an angled line in the design process?

To create an angled line, select the 'line' tool and draw the line at any desired angle.

What is the next step after creating the angled line?

After creating the angled line, the next step is to mirror it using the 'mirror' tool.

How do you delete a line after mirroring?

You can delete a line by clicking on the line and pressing the delete button.

What does the 'xend' tool do in this design process?

The 'xend' tool is used to extend the lines to the point where they need to meet or align.

How is the trim tool used in this process?

The trim tool is used to remove unwanted parts of the lines that extend beyond the required boundaries.

What is the purpose of the 'sketch pattern' feature?

The 'sketch pattern' feature allows you to replicate a selected set of lines multiple times to create the pattern for the gear teeth.

How do you adjust the number of teeth on the spur gear?

The number of teeth can be adjusted by selecting the 'number' option in the sketch pattern and increasing or decreasing the value. In this case, it was set to 15 teeth.

What happens after the sketch pattern is created?

After the sketch pattern is created, the next step is to use the 'trim' tool again to refine the design, and then proceed with the extrude feature to create the 3D shape.

What material is chosen for the spur gear, and why is it important?

The material chosen is 'cast iron' (specifically 'gr cast iron Ence'). This is important for the gear’s durability and strength in real-world applications.

What is the final step in creating the spur gear in this process?

The final step is to apply the material (cast iron) and close the feature to complete the spur gear design.