Dividing heads, also known as indexing heads, are essential accessories for milling machines. They enable the operator to divide the circumference of a workpiece into equal parts, facilitating the creation of precise angles, grooves, and other complex features. As a leading milling machine supplier, we understand the importance of choosing the right dividing head for your specific application. In this blog post, we will explore the different types of dividing heads commonly used in milling machines and their unique features and applications.
Plain Dividing Head
The plain dividing head, also known as a simple dividing head, is the most basic type of dividing head. It consists of a spindle, a worm gear, and a worm wheel. The spindle is connected to the workpiece, and the worm gear is driven by a hand crank. By turning the hand crank, the operator can rotate the spindle in small, precise increments, allowing for accurate indexing.
Plain dividing heads are typically used for simple indexing operations, such as dividing a circle into equal parts or creating a series of equally spaced holes. They are relatively easy to use and are suitable for a wide range of applications, including general machining, tool and die making, and small batch production.
Universal Dividing Head
The Universal Milling Machine dividing head is a more versatile type of dividing head that offers a wider range of indexing options. It consists of a spindle, a worm gear, a worm wheel, and a set of change gears. The change gears allow the operator to vary the ratio between the worm gear and the worm wheel, enabling a greater number of indexing possibilities.
Universal dividing heads can be used for a variety of indexing operations, including simple indexing, differential indexing, and angular indexing. They are commonly used in applications where a high degree of precision and flexibility is required, such as aerospace, automotive, and medical manufacturing.
Optical Dividing Head
The optical dividing head is a highly precise type of dividing head that uses an optical system to measure and control the rotation of the spindle. It consists of a spindle, a worm gear, a worm wheel, and an optical encoder. The optical encoder is connected to the spindle and provides feedback on its position, allowing for extremely accurate indexing.
Optical dividing heads are typically used in applications where a very high degree of precision is required, such as precision machining, optical manufacturing, and scientific research. They are more expensive and complex than other types of dividing heads, but they offer unparalleled accuracy and repeatability.
Rotary Table Dividing Head
The rotary table dividing head is a type of dividing head that is integrated into a rotary table. It consists of a rotary table, a spindle, a worm gear, a worm wheel, and a set of change gears. The rotary table allows the operator to rotate the workpiece in a horizontal plane, while the dividing head enables precise indexing in the vertical plane.
Rotary table dividing heads are commonly used in applications where a combination of rotational and indexing operations is required, such as milling complex shapes, drilling holes at multiple angles, and machining curved surfaces. They are often used in conjunction with Turret Milling Machine and other types of milling machines.
Choosing the Right Dividing Head
When choosing a dividing head for your milling machine, there are several factors to consider, including the type of indexing operations you need to perform, the level of precision required, the size and weight of the workpiece, and your budget. Here are some tips to help you choose the right dividing head for your needs:
- Determine the type of indexing operations you need to perform: Consider the specific indexing operations you need to perform, such as simple indexing, differential indexing, or angular indexing. This will help you determine the type of dividing head that is best suited for your application.
- Consider the level of precision required: If you need a high degree of precision, you may want to consider an optical dividing head or a universal dividing head with a high-precision encoder. If you only need a basic level of precision, a plain dividing head may be sufficient.
- Think about the size and weight of the workpiece: Make sure the dividing head you choose is capable of handling the size and weight of the workpiece you will be machining. Consider the maximum diameter and length of the workpiece, as well as its weight.
- Set a budget: Dividing heads can vary in price depending on their type, features, and level of precision. Set a budget for your dividing head purchase and look for a model that offers the features and performance you need within your price range.
Conclusion
Dividing heads are essential accessories for milling machines that enable precise indexing and the creation of complex features. As a leading milling machine supplier, we offer a wide range of dividing heads to suit different applications and budgets. Whether you need a plain dividing head for simple indexing operations or a high-precision optical dividing head for precision machining, we have the right solution for you.
If you are interested in learning more about our dividing heads or other milling machine accessories, please contact us today. Our team of experts will be happy to help you choose the right products for your needs and provide you with a competitive quote. We look forward to working with you!
References
- "Milling Machine Handbook" by Richard R. Kibbe
- "CNC Programming Handbook" by Peter Smid
- "Machinery's Handbook" by Industrial Press Inc.