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100MM SEMI-UNIVERSAL DIVIDING HEAD
INCLUDING
- 125MM 3 JAW CHUCK WITH 2 SETS OF JAWS
- CENTER
- EXTRA PLATES
- NEW
A 100mm semi-universal dividing head is also known as an indexing head or a spiral head. It is an essential tool you use in the field of metalworking, especially for precise milling and other machining operations. You use it to hold a workpiece in a specific position and rotate it to precise angles. This allows the machining of various geometric features. Below, I’ll discuss the key features, uses, and other considerations of a 100mm semi-universal dividing head.
Key Features
- Size: The “100mm” in the name refers to the size of the chuck or the faceplate diameter, which is roughly 4 inches. This size is suitable for handling small to medium-sized workpieces.
- Construction: Typically constructed from high-grade cast iron or steel, dividing heads are robust and designed for precision. The semi-universal type allows for some degree of tilt in addition to rotation, providing flexibility for angular setups.
- Indexing Mechanism: This allows the operator to rotate the workpiece to precise increments. The dividing plate with holes drilled at specific intervals interacts with an indexing pin or crank, facilitating exact rotations.
- Chuck: It features a chuck or you can fit it with a collet system for holding the workpiece. The chuck allows for quick adjustments and securing of the workpiece.
- Gear Ratios: The gear train in a dividing head is adjustable for different ratios, enabling various division operations without needing to swap out the dividing plate.
Common Applications
- Machining Gear Teeth: One of the most common uses of dividing heads is in the cutting of gears. By setting the gear ratio and using a suitable cutter, you can machine the teeth of a gear precisely.
- Drilling Patterned Holes: For projects requiring precise and patterned hole drilling in circular arrays, like in a flange or a hub, a dividing head is indispensable.
- Complex Machining: It allows for machining at various angles and planes, enabling complex shapes and surfaces like spirals.
Accessories
- Dividing Plates: These are critical for achieving the necessary divisions. They come with different configurations of holes for various dividing options.
- Tailstock: Similar to that used on a lathe, a tailstock supports the other end of the workpiece, especially useful for longer items.
- Drive Gear: You might need additional gears for specific machining tasks that require unique gear ratios.
Usage Tips
- Accuracy Check: Regularly verify the accuracy and alignment of the dividing head to ensure precision in machining tasks.
- Lubrication: Maintain proper lubrication of the moving parts to prevent wear and to keep operation smooth.
- Secure Mounting: Always ensure the dividing head is securely mounted to the machine table and that the workpiece is tightly clamped to avoid any movement during machining.
- A 100mm semi-universal dividing head is a highly beneficial addition to a milling setup, particularly when precision and versatility in machining operations are required. It enhances the capability to produce intricate and precise parts in a workshop setting.
