Gear hobbing machine is the most widely used type of gear processing machine tool, which can cut straight and helical teeth

Cylindrical gears can also be used for machining worm gears, sprockets, etc. A gear processing machine tool for machining straight, helical, and herringbone cylindrical gears, as well as worm gears, using a hob according to the generative method.

This machine tool can also process various special tooth shaped workpieces such as splines and sprockets when using specially designed hobs. The machining accuracy of ordinary gear hobbing machines is 7-6 levels (JB179-

83), the high-precision gear hobbing machine is of level 4-3. The maximum machining diameter is 15 meters.

Gear hobbing machines are divided into two types according to layout: vertical and horizontal. Large and medium-sized gear hobbing machines are mostly vertical, while small gear hobbing machines are vertical gear hobbing machines

Both the gear hobbing machine and the gear hobbing machine specifically designed for processing long shaft gears are horizontal. Vertical gear hobbing machines are divided into two types: workbench movement and column movement. When the vertical gear hobbing machine is working,

The hob is installed on the hob spindle and is driven by the main motor for rotational motion. The tool holder can move vertically along the column guide rail and can also adjust an angle around the horizontal axis.

The workpiece is installed on the workbench, driven by the indexing worm gear pair for rotation, and together with the motion of the hob, it forms a generative motion.

When rolling helical gears, the differential mechanism causes the workpiece to undergo corresponding additional rotation. The workbench (or column) can move along the bed to accommodate different workpiece diameters

And perform radial feed. Some gear hobbing machines also have a tool holder that can move along the axis of the hob to facilitate the use of tangential feed method for machining worm gears. Large gear hobbing machines also have single teeth

Indexing mechanism, finger milling cutter holder, and differential reversing mechanism for machining herringbone gears.