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WORKING CONDITIONS AND WORKING PRINCIPLE OF PRECISION GEAR MACHINING

Different gear processing methods are different, depending on the number of teeth and materials, so what are the working conditions of precision gear processing?

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What are the working conditions of precision gear processing:

In order to avoid undercuts, reduce the structure and size of transmission technology, and improve the contact strength of tooth surfaces, precision gear processing enterprises have more and more research on the application of variable gears. Generally, we need to choose different displacement coefficients according to the working environment conditions of the gears, the heat treatment process conditions of the materials and the requirements of performance analysis indicators. In recent years, in order to reduce the contact stress of the tooth surface and improve the anti-glue ability of some heavy-duty gears, gear transmissions with large displacement coefficients have been designed.

To make the large slip ratios close to equal, some open gears are designed to resist wear and improve the bending strength of the gears, and the largest possible total displacement coefficient can be selected for positive displacement, so that the social structure can be changed without changing. And increase the cost control of manufacturing enterprises to design gears. We improve the bearing capacity and service life, and give full play to the advantages of the displacement gear.

The gear transmission that conforms to the theoretical tooth shape and the theoretical tooth direction does not necessarily have good dynamic performance. Important gear drives are often designed as modified gears. At present, not only the shape of the tooth top modification or the tooth direction modification drum with noise reduction function is required for machine tools and vehicle gears, but also the ingenious design of the eyeless modification of the entire tooth profile and tooth direction. Especially for high-power, high-speed and heavy-duty gear transmission, the vibration and eccentric load during gear operation are due to the influence of tooth surface deformation and manufacturing and installation errors, as well as the change of the contact state of the stationary tooth surface.

Precision gear transmission has the advantages of small size, light weight, large transmission torque, stable starting, and finely graded transmission ratio. It can be connected arbitrarily and installed in various ways according to user requirements. Among all mechanical transmissions, gear transmission technology has the widest application range, and can be used to transmit motion and power between two shafts with relatively important positions.

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The working principle of precision gear transmission: 

A pair of gears with the same module mesh with each other to transmit the power from the A shaft to the B shaft to complete the power transmission. Precision gear transmission refers to a device that transmits motion and power through gear pairs. It is the most widely used mechanical transmission method in modern equipment. The gear transmission works through the meshing of the gear teeth, and the gear teeth are the parts where the gear directly participates in the work, so the failure of the gear mainly occurs on the gear teeth. The main failure modes are gear tooth breakage, tooth surface pitting, tooth surface wear, tooth surface gluing and plastic deformation.

Features of gear transmission:

1. The transmission system has high precision.

2. Wide range of applications.

3. It can realize the transmission between any two axes in the space of parallel axis, intersecting axis, staggered axis, etc., which cannot be achieved by belt drive and chain drive.

4. Long service life and high level of transmission technology efficiency.

5. The environmental conditions are strictly required. Except for a few low-speed and low-precision situations, it is generally necessary to place it in the box cover to prevent dust and scale, and it is also necessary to pay attention to lubrication.


Post time: Jun-09-2023