Classification of industrial robot bearings
Writer： admin Time：2019-11-23 15:42 Browse：℃
As one of the key components of industrial robots, industrial robot bearings are most suitable for joints or rotating parts of industrial robots, rotary tables for machining centers, robot rotating parts, precision rotary tables, medical instruments, measuring instruments, and IC manufacturing. A wide range of applications such as devices. It mainly includes two types of bearings for industrial robots, one is a thin-walled bearing with equal section, and the other is a crossed cylindrical roller bearing. There are also harmonic reducer bearings, linear bearings, joint bearings, etc., but mainly the first two bearings.
Industrial robot bearing features: 1. Can withstand axial, radial, overturning and other directions of comprehensive load; 2. Thin-walled bearings; 3. High-slewing positioning accuracy. Any bearing that meets this design requirement can be used in industrial robot arms, swivel joints, and chassis.
Industrial robot bearing classification:
First, the cross roller bearing
The characteristics of the crossed roller bearing: the crossed roller bearing, the cylindrical roller or the tapered roller is arranged perpendicularly to each other through the spacer block on the 90-degree V-shaped groove rolling surface, so the crossed roller bearing can bear the radial direction Multi-directional loads such as load, axial load and moment load. The size of the inner and outer rings is miniaturized, and the extremely thin form is a small size close to the limit, and has high rigidity and accuracy to the P5, P4, and P2 levels. Therefore, it is suitable for joints and rotating parts of industrial robots, rotary tables for machining centers, precision rotary tables, medical equipment, calculators, military, and IC manufacturing equipment.
1, with excellent rotation accuracy:
The internal structure of the crossed roller bearing is arranged at 90° perpendicular to each other by rollers. The spacers or spacers are arranged between the rollers, which can prevent the inclined rollers of the rollers from being mutually inspected and effectively prevent the rotational torque. Increase. In addition, the contact phenomenon or the locking phenomenon of the roller does not occur; at the same time, since the inner and outer rings are divided structures, the gap can be adjusted, and even if the preload is applied, a high-precision rotary motion can be obtained.
2. Operational installation is simplified:
The outer ring or inner ring that is divided into two parts is fixed together after the roller and the retainer are loaded, so the operation is very simple to install.
3. Withstand large axial and radial loads:
Because the rollers are vertically aligned with each other through the spacers on the 90° V-groove rolling surface, this design allows the crossed roller bearings to withstand large radial loads, axial loads and moment loads. Directional load.
4, greatly save installation space:
The size of the inner and outer rings of the crossed roller bearing is miniaturized to a minimum. In particular, the ultra-thin structure is a small size close to the limit and has high rigidity, so it is most suitable for the rotation of the joint portion or the rotating portion of the industrial robot and the machining center. A wide range of applications such as work tables, robot rotating parts, precision rotary tables, medical instruments, measuring instruments, and IC manufacturing equipment.