Industrial robot for thin section sealed bearing structure design and analysis
The crucial part of the robot forms a complete set of special bearing, operation stability and repeat positioning accuracy, precision. Reliability of work has an important influence on key performance indicators. At present, robots use more bearing, such as thin section deep groove ball bearings, thin section angular contact ball bearings, thin section four-point contact ball bearing and thin section crossed roller bearing, etc. Due to the thin-walled four-point contact ball bearing and thin-walled cross roller bearing being under combined load capacity, high precision, small friction torque, lightweight, stable running, etc., is applied to the waist of the industrial robot, elbow, wrist, etc.
1. The industrial robot in the form of a thin-walled four-point contact ball bearing structure
Industrial robot for thin-wall four-point contact ball bearing with seals and usually doesn't take the seal ring structure. It mainly consists of the inner and outer ring, cage, balls, or non-contact seal. Inner and outer are based on the overall design, steel ball in contact with the inner and outer channel is four o 'clock, cage for crown plug-in structure. Suitable for installation in industrial robot wrist, elbow joints, etc.
2. The characteristics of the thin-wall sealed four-point contact ball bearing
(1) Cross-section is small, lightweight. Thin-walled sealed four-point contact ball bearing outer diameter and inner diameter is small, small roller diameter, number, compared with the standard of the same diameter bearing the weight of about 5% of the standard bearing, the cross-sectional area of about 20% of the standard bearings.
(2) Bearing cross-section remains the same. Thin-walled four-point contact ball bearing series, bearing the cross-section of the same size, do not change with the change of inner and outer diameter.
(3) The width is small, load-bearing. Thin-walled sealed four-point contact ball bearing can bear radial load, two-way thrust load, and tilting moment, the equivalent of two sets of back-to-back installation Angle contact ball bearing. Still, the width is only equivalent to a group of angular contact ball bearings.
