The characteristics of industrial robot bearings include: can withstand comprehensive loads in axial, radial, and overturning directions; thin-walled bearings; and high rotary positioning accuracy.Any bearing that can meet this design requirement can be used in industrial robot arms, rotary joints, chassis and other parts.Below, we look at the classification and industrial development of industrial robot bearings.
XNUMX. Classification of industrial robot bearings
1. Crossed roller bearings
Crossed roller bearings are cylindrical rollers or tapered rollers arranged perpendicular to each other on the 90-degree V-groove rolling surface through spacers, so the crossed roller bearings can bear radial load, axial load and moment load Wait for loads in multiple directions.The size of the inner and outer rings is miniaturized, and the ultra-thin form is even closer to the limit of small size, and has high rigidity, and the accuracy can reach P5, P4, and P2.Therefore, it is suitable for the joints and rotating parts of industrial robots, the rotating tables of machining centers, precision rotating tables, medical machines, calculators, military industry, IC manufacturing equipment and other equipment.
2. Equal section thin-walled bearings
The uniform section thin-walled bearing is composed of seven open series and five sealed series.There are three types of open series: radial contact type C, angular contact type A and four-point contact X type.Advantages of thin-walled constant-section bearings: thin-walled bearings realize extremely thin bearing sections, and also realize miniaturization and light weight of products.The variety of products expands its scope of use.Product features of thin-walled constant-section bearings: In order to obtain the bearing's low friction torque, high rigidity, and good rotation accuracy, steel balls with small outer diameters are used.The use of hollow shafts ensures light weight and space for wiring.The thin-walled 6700 and 6800 series have various types of dust-proof cover, flanged, stainless steel, and wide-format, etc., with a complete range.
XNUMX. Development of industrial robot bearing industry
Industrial robot bearings are basically thin-walled high-precision bearings. The accuracy of these bearings is above P5, and some bearings have accuracy up to P2. They are ultra-high-precision bearings, which are difficult to process and produce. At present, domestic demand is largely dependent on Imported from abroad, with the development and growth of the robot industry, the robot bearing industry is also in a period of rapid development. A number of professional precision thin-walled bearing manufacturers have appeared in Luoyang and other bearing industry bases, filling the gap in the domestic market.Industrial robot bearings are not limited to use in the field of industrial robots. In high-precision fields such as precision measurement equipment, aerospace, astronomical research, and medical equipment, such bearings also have important development and application potential.
In recent years, Luoyang Huigong Bearing Technology Co., Ltd. has compiled its own constant section thin-walled bearing series product samples on the basis of learning similar bearing products from Kaydon Company in the United States and NTN Bearing Company of Japan; and formulated a constant-section thin-walled bearing enterprise Technical standards have further filled the gap in domestic demand.
