Crossed roller bearings isolation block design defects and improvement

Crossed roller bearings known as cross roller bearings, cylindrical roller generally use roller or tapered roller in a single raceway cross mutually arranged between the roller and the roller cage or through isolation block interval, with high rotational accuracy, the larger the capacity, the smaller dimensions and a higher rotational speed and rigidity, with a very wide range of uses.

cross roller bearing design flaws and improve it.

1 inside the bearing arrangement of the roller, two adjacent rollers arranged in cross, all arranged in the same direction roller intersects the centerline axis of the rotary bearing, two rollers arranged in a direction opposite to the axis of intersection of the center line of the bearing slewing relative to the plane of the center roller symmetrical.

2 Isolation of existing designs of the defect blocks according to the current design, two cylindrical grooves spacers axis the axis perpendicular to the radial plane spacers are parallel, and in that the projection plane perpendicular to each other. Manufactured using current design method has the advantage of an isolation block with good versatility. As long as the selection of different roller bearing the same specifications, generally can use the same kind of isolation blocks. Spacers is cylindrical, its axis center line tangent to the circle of rollers. However, two adjacent roller axes A and B blocks are not isolated from the axis perpendicular to the radial plane are parallel.

Prime line roller work surface and isolation block cylindrical groove surface pixel lines are not parallel, but inclined at an angle, causing the contact state is not good, affect the bearing rotation flexibility and precision rotation speed is higher, the effect is also more obvious. Therefore, it is necessary to improve the design of the separators, the separators of the roller axis of the cylindrical grooves parallel to the axis, thereby improving the isolation block the cylindrical roller groove surface. The higher the speed, the more obvious the effect.