Equal-section thin-walled bearings and crossed cylindrical roller bearings are the two main categories in the application of industrial robots. In addition, there are harmonic reducer bearings, linear bearings, joint bearings, etc. Luoyang Hongyuan Bearing Technology Co., Ltd. takes the production of precision bearings as its development direction, and specializes in R&D and manufacturing of three series of products: precision turntable bearings, cross roller bearings, and special bearings for robot reducers. The precision grades are P2, P4, and P5, occupying 80 domestic % of the market, 40% of the products are exported to Europe, South Korea and other countries, and develop at a growth rate of 30%-50% every year.
The bearing of an industrial robot is one of its key accessories. It is most suitable for joints or rotating parts of industrial robots, rotating tables of machining centers, rotating parts of manipulators, precision rotating tables, medical instruments, measuring instruments, and IC manufacturing devices. and other wide-ranging uses.
Features of industrial robot bearings: can withstand comprehensive loads in axial, radial, and overturning directions; thin-walled bearings; high rotational positioning accuracy. Any bearing that meets this design requirement can be used in industrial robot arms, rotary joints, chassis, etc.
1. Cross roller bearing
Features of crossed roller bearings: crossed roller bearings are cylindrical rollers or tapered rollers arranged perpendicular to each other through spacers on the 90-degree V-shaped groove rolling surface, so crossed roller bearings can withstand radial Multi-directional loads such as loads, axial loads, and moment loads. The size of the inner and outer rings is miniaturized, and the extremely thin form is even closer to the limit of small size, and has high rigidity, and the precision can reach P5, P4, and P2 levels. Therefore, it is suitable for joints and rotating parts of industrial robots, rotating tables of machining centers, precision rotating tables, medical equipment, calculators, military industry, IC manufacturing equipment and other equipment.
1. Excellent rotation accuracy:
The internal structure of the crossed roller bearing adopts rollers arranged vertically and intersecting each other at 90°. There are spacers or spacers between the rollers, which can prevent the rollers from tilting or rubbing against each other, and effectively prevent the rotation torque. Increase. In addition, there will be no one-sided contact phenomenon or locking of the rollers; at the same time, because the inner and outer rings are divided, the gap can be adjusted, and high-precision rotary motion can be obtained even if preload is applied.
2. Simplified operation and installation:
The outer ring or inner ring divided into two parts is fixed together after the rollers and cages are installed, so the installation operation is very simple.
3. Withstand large axial and radial loads:
Because the rollers are vertically arranged on the 90° V-groove rolling surface through the spacer, this design enables the crossed roller bearing to withstand large radial loads, axial loads and moment loads, etc. direction load.
4. Significantly save installation space:
The size of the inner and outer rings of the crossed roller bearing is minimized, especially the ultra-thin structure is a small size close to the limit, and has high rigidity, so it is most suitable for the joints or rotating parts of industrial robots, and the rotation of machining centers It can be used in a wide range of applications such as worktables, manipulator rotating parts, precision rotary tables, medical instruments, measuring instruments, and IC manufacturing equipment.
