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3D Printed Bearings Cage For Quick Verification Of Product Design

wallpapers News 2020-04-07

With the development of 3D printing technology, the material performance is getting higher and higher, and more and more manufacturers have begun to use 3D printing to print gear bearings design, prototype design, testing, inspection, production, and other services. The application of 3D printing technology can realize the production of plastic bearing cages without injection molds, which not only can quickly respond to product design changes but also enhance the competitiveness of the rapid output of small and medium-sized custom bearings. There are two types of 3D printing equipment commonly used for 3D printing gear bearings, one is EOS's selective laser sintering equipment, and the other is HP's multi-jet fusion equipment (MJF). The product developed by 3D printing applications is a plastic bearing cage.

The primary function of the cage is to keep the rolling elements at a proper distance from each other, reduce the friction torque of the bearing and the heat generated by the friction, and distribute the rolling elements evenly throughout the bearing, optimize the load distribution and reduce noise. Therefore, the design and materials of the cage have a significant influence on the suitability of rolling bearings in specific applications. When designing the 3D printing cage, an interlocking structure can be used, and the rolling elements fix each part of the cage together. The advantage of this design is that there is more space around the circumference of the cage, so compared with similar products on the market, this cage product can increase 2-4 rolling elements. This means that the bearing load can be distributed over a more significant number of rolling elements.

The main characteristics of the commonly used materials for 3D printing gear cages: the parts have higher impact strength, good load dispersion, excellent flexibility, thermoplasticity, lightweight, good toughness, resistance to cyclohexanone and aromatic solvents, and excellent durability. Used under light load conditions, it has excellent wear resistance, self-lubrication, and solvent resistance. It has better vibration absorption and noise reduction ability, but the water absorption rate is higher, which is not suitable for working in a humid environment.

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