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Gear Cutting Machines

The gear processing machine tool processes various cylindrical gears, bevel gears and other toothed parts. There are many types of gear processing machine tools, including small machine tools that process gears with a diameter of a few millimeters, large machine tools that process gears with a diameter of more than ten meters, and high-precision machine tools that process high-precision gears with high-efficiency machines for mass production.

Definitions and materials

Gear hobbing machine is one of the most widely used machine tools in gear processing machines. It can cut straight and helical cylindrical gears, and it can also process worm gears, sprocket wheels, etc. A gear processing machine for machining straight, helical and herringbone spur gears and worm gears using a hob in accordance with the development method. This machine tool can also process various special toothed workpieces such as splines and sprocket wheels when using special hobs. The machining accuracy of ordinary hobbing machines is 7 to 6 grades, and the precision of hobbing machines is 4 to 3 grades. The maximum processing diameter is 15 meters.

Classification

The hobbing machine is divided into vertical and horizontal according to the layout. Large and medium gear hobbing machines are mostly vertical, small gear hobbing machines
Both hobbing machines and hobbing machines dedicated to processing long shaft gears are horizontal. Vertical hobbing machine is divided into two types of table movement and column movement. When the vertical hobbing machine works, the hob is mounted on the hob spindle and is driven by the main motor for rotary motion. The tool holder can move vertically along the guide rail of the column and can also adjust an angle about the horizontal axis. The workpiece is mounted on the worktable, and is driven by the indexing worm gear pair to rotate, and forms a forming movement together with the movement of the hob. When hobbing helical teeth, the differential mechanism makes the workpiece make corresponding additional rotation. The worktable (or upright) can be guided along the bed to move and adapt to different workpiece diameters and radial feed. The hob of some hobbing machines can also be moved along the hob axis in order to process the worm gear with tangential feed. The large hobbing machine is also equipped with a single-tooth indexing mechanism, a finger milling cutter holder, and a differential reversing mechanism for processing herringbone gears.

Function and characteristics

(1) Cylindrical helical gears and worm gears are produced in small batches and in single pieces, and spline shafts with a certain parameter range can also be rolled.
(2) Easy adjustment, with automatic parking mechanism
(3) It has a reliable safety device and an automatic lubrication gear hobbing machine. It is the most widely used machine tool in gear processing machines. It can cut straight and helical cylindrical gears, and it can also process worm and sprocket wheels. Wait.

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Use

Hobbing machines are widely used in various machinery manufacturing industries such as automobiles, tractors, machine tools, construction machinery, mining machinery, metallurgical machinery, petroleum, instruments, aircraft and spacecraft.
The gear processing machine tool processes various cylindrical gears, bevel gears and other toothed parts. There are many types of gear processing machine tools, including small machine tools that process gears with a diameter of a few millimeters, large machine tools that process gears with a diameter of more than ten meters, and high-precision machine tools that process high-precision gears with high-efficiency machines for mass production.

 

 

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