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How to Improve the Machining Process of Gear Shafts

Pulished on Jul. 06, 2021

The methods to improve the Gear Shaft machining process are mainly to improve the gear shaft machining process in terms of gear shaft material, fixture, gear hobbing and choosing reasonable cutting fluid.


1、Gear shaft material

For some traditional machining gear shaft materials, 45 steel of high quality carbon structural steel and 40Cr and 20CrMnTi of alloy steel are usually used. These materials have better texture and longer service life.


2. Fixture

Generally speaking, the installation accuracy of the fixture is related to the accuracy of the gear shaft. It plays an important role in gear hobbing processing.

(1) Mount the gear shaft on the hobbing machine. When installing the gear shaft, check the error of the top circle line of the gear and the vertical parallel line of the tool holder. A micrometer is usually used to check the 90 degree direction; for the radial runout of the tooth top circle and the reference journal, a micrometer is used. The table to be checked.

(2) Mounting the tooth blank on the hobbing machine. First, before mounting and clamping the tooth blanks, the parts should be cleaned of oil and dirt. To ensure the accuracy of workpiece clamping, the workpiece reference surface should be downward. When combining with the support surface, no paper or copper should be used in between. Prepayment: When clamping compacted tooth blanks, the press surface should pass through the support surface and not hang on it. Use proper pressing force to avoid deformation of the workpiece during pressing.

(3) Appropriate hob holder. When the installation angle of the tool holder is exactly equal to the helix angle of the hob, only straight cylindrical gears are processed.

Gear Shaft

Gear Shaft


3、Choose a reasonable cutting fluid

Each gear shaft material is different, the required cutting fluid is also different. Cutting fluid has its own advantages. For example, for 40 chromium gear shafts, a compound cutting fluid should be used. It mainly has the following functions.

①The cutting fluid can flush away chips and other dirt in time to avoid splashing the operator or scratching the machining surface when the chips and dirt are not handled in time.

②Increasing the flow of clean cutting fluid can make the machined tooth surface smooth and reduce tooth surface roughness, thus reducing noise

③In gear shaft hobbing engineering, by pouring cutting fluid during cutting, the hob can work at a certain constant temperature under the action of the cutting fluid, avoiding the phenomenon of sharp cooling and rapid heating of the hob, because the cutting fluid has lubricating and cooling effects.

Gear Shaft Supplier concludes that when processing gear shafts, it is necessary to clarify the position and function of each part of the product, understand each technology, and find the best technical method combined with the actual situation, so that the processing technology gear shaft in the process of processing using the most optimal process measures to ensure the quality of gear shaft processing, extend the life of the gear shaft, save resources, and promote social and economic development.

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