How much do you know about rolling bearings?
On the bearing, Xiaobian do not know much, this is the truth, Xiao Bian only know the essential component of modern machinery, is to support the operation of mechanical equipment, reduce the friction of the weapon tool. Below, is some of the classification of bearings, as well as the design and application of the scope, to share with you.
Wedge type design
The wedge has two diagonal diameters, that is, from the corner of the wedge to the other diagonal, one of which is greater than the other. Wedge action occurs when the inner and outer rings are relatively rotated, forcing the wedge to have a larger vertical position on the larger cross section. The wedge type overrunning overrunning clutch is composed of inner ring, outer ring, wedge block, wedge block cage, powerful spring and bearing. The wedge in between the inner and outer ring raceway to wedge from one to another roller transfer power.
How much do you know about rolling bearings?
Slope and roller design
The slope and roller type one-way clutch is composed of a cylindrical inner diameter outer ring, a slope inner ring and a set of rollers which bear spring force and are closely contacted with the inner and outer rings respectively. As long as one of the raceways rotates in the direction of its motion, the other one produces an effect that essentially ensures the immediacy of the passing velocity and guarantees the immediate drive capability.
This type of one-way clutch has a wide range of use, can be used in a variety of environmental transcendence, indexing and backstop. The sloped roller type one way clutch will be installed in this way, that is, the outer ring is used as the overrunning component. This is very important for high-speed going beyond. In the application of the inner race, the centrifugal force acting on the roller will lead to the limit of exceeding velocity.
How much do you know about rolling bearings?
When used as a check only one-way clutch, only the inner wheel rotation of the slope roller type one-way clutch is suitable for relatively low speed. If the required speed is higher than the recommended speed, it is recommended to use the wedge type one-way clutch.
When used as a one-way clutch, the outer ring is often regarded as a swinging element, and the inner ring is often regarded as a slave element. Otherwise, the inertia of the roller and spring will lead to errors, especially at high frequency division. The use of diluted lubricating oil and powerful spring provides high speed indexing accuracy and high quality.
Self-locking angle
How much do you know about rolling bearings?
Wedge effect mainly depends on the inner and outer rings between the wedging and self-locking wedge angle. The basic concept of the wedge one-way clutch requires that the friction coefficient of the wedge is related to the sudden torque generated in the inner ring of the driving direction, and the friction value must be larger than the tangent of the self-locking angle. If the conditions are not safe, there would not be a wedge.
The self-locking angle is determined by the structure of the wedge, and the points on the inner ring and outer ring are respectively connected with the wedge and its connection.
The wedge has a very low initial self locking angle to ensure absolute bonding at the beginning. As the torque increases, the wedge produces a radial force that deflects the wedge raceway, causing the wedge to roll to a new position. Wedges are often designed to have a self locking angle that increases gradually, as it moves from the top position to the maximum load. The larger self locking angle can reduce the radial force produced by the wedge, so that larger torque is allowed as long as the elongation and Brinell hardness limit are required.
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