Motion principle and machining accuracy description of different gear machining methods

EP has shared with you before6 kinds of gear processing methods, And there is no detailed description of their respective motion principles, processing accuracy, etc., let me learn about it with me below!

1. Gear shaper

How it works:

The gear shaper is equivalent to the meshing of a pair of cylindrical gears whose axes are parallel to each other.

motion:

Let the knife move, cutting movement, radial feed movement, split tooth forming movement.

Precision:

roughing.

Applications:

Process internal and external gears or rack products.

2. Shaving teeth

How it works:

gearFree meshing, different helix angles.

motion:

The workpiece reciprocates in the axial direction, so that the full tooth width of the gear can be shaved; the gear shaving cutter drives the high-speed forward and reverse movement of the workpiece, a basic movement; the workpiece makes a radial feed movement every time it reciprocates to remove all the margin.

Features:

High efficiency, low cost, no cracks, no burns on the tooth surface; the space crosses an angle.

Precision:

6-7.

3. Gear hobbing

How it works:

Gear and rack drive without meshing clearance.

motion:

The vertical feed movement; the rotation movement of the main movement hob; the split tooth movement forces the gear blank and the hob to maintain meshing movement with the rack.

Precision:

roughing.

4. Grinding teeth

How it works:

The gear grinding machine grinds the teeth of the gear.

motion:

The gear rotates and the grinding wheel rotates.

Precision:

锥形砂轮：5-7，成形砂轮：7-8，碟形砂轮：4-7。

Applications:

The hardened gear is finished to eliminate the deformation after heat treatment.

5. Milling teeth

How it works:

Forming method processing.

motion:

Feed movement.

Features:

The cutting shape of the cutter is the same as the tooth groove shape of the gear to be machined; the gear with a large modulus has higher milling production efficiency.

Precision:

Roughly cut teeth.

6. Honing

How it works:

The gears mesh freely and have different helix angles.

motion:

Each time the workpiece reciprocates, it performs a radial feed movement to remove all the margin. The gear shaving cutter drives the workpiece to move forward and backward at a high speed, a basic movement. The workpiece reciprocates in the axial direction, so that the full tooth width of the gear can be shaved.

Precision:

Ra0 8-0.4um.

Applications:

The hardened gear is finished, and the oxide scale and burrs on the tooth surface after heat treatment are removed.

The above-mentioned different gear machining methods' motion principles and machining accuracy descriptions include but are not limited to. For more information, please consult EP for free.