Understanding the Process of Making a Bevel Gear in Onshape

Onshape is a popular Computer-Aided Design (CAD) software that allows users to design and model various mechanical parts, including bevel gears. This article will guide you step-by-step on how to make a bevel gear in Onshape.

Step-by-Step Guide to Making a Bevel Gear in Onshape

1. Create a New Document

   Start by creating a new document in Onshape. This will serve as your workspace for designing the bevel gear.

2. Define the Gear Parameters

   Next, define the gear parameters such as the Module, Number of Teeth, and Gear Ratio. These parameters are essential in determining the physical characteristics of the gear.

3. Design the Gear Profile

   Using the defined parameters, design the gear’s profile. This includes the teeth and the gear body.

4. Extrude the Gear Profile

   Once the gear profile is complete, extrude it to give it a three-dimensional form. This process will create the physical shape of the gear.

5. Create the Bevel

   The final step is to create the bevel on the gear teeth. This is done by tapering the gear teeth from the root to the top, creating a conical shape.

Choosing the Right Bevel Gear

Bevel gears come in various forms, including Straight Bevel Gear, Spiral Bevel Gear, Zerol Bevel Gear, and Spiral Zerol Bevel Gear. Each type has its unique features and applications.

Types of Bevel Gears and Their Features

• Straight Bevel Gear

  Straight Bevel Gears are the simplest type, with straight and tapered teeth. They are used in applications where precision is not as critical.

• Spiral Bevel Gear

  Spiral Bevel Gears have curved teeth, which provide smoother and quieter operation than Straight Bevel Gears. They are used in high-speed applications, where noise and vibration control is crucial.

• Zerol Bevel Gear

  Zerol Bevel Gears are similar to Spiral Bevel Gears, but with a zero degree helix angle. This allows them to operate more smoothly and quietly than Straight Bevel Gears.

• Spiral Zerol Bevel Gear

  Spiral Zerol Bevel Gears are a hybrid of Spiral and Zerol Bevel Gears. They offer the best of both worlds, providing the smooth and quiet operation of Spiral Bevel Gears and the strength of Zerol Bevel Gears.

Parameters to Consider When Choosing a Bevel Gear

When choosing a bevel gear, several parameters need to be taken into consideration. These include Module, Number of Teeth, Gear Ratio, Pitch, Gear Material, Precision Grade, and Load Capacity. Understanding these parameters will ensure you choose the right bevel gear for your application.

Module

The module is a measure of the tooth size. A higher module indicates larger teeth and vice versa.

Number of Teeth

The number of teeth on a gear determines its gear ratio, which affects its speed and torque.

Gear Ratio

The gear ratio is the ratio of the number of teeth on the driving gear to the number of teeth on the driven gear. A higher gear ratio increases torque but decreases speed, and vice versa.

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