Coupling of cross roll ways and roll balls

Abstract

The invention relates to a coupling of cross roll ways and roll balls, which comprises a roll way driving pair made up of inner cogs, roll balls and outer cogs, wherein an angle gamma is formed between the central line of the inner cogs in the roll way driving pair and the central line of the outer cogs through reciprocal chiasma, the angle gamma equals to the sum of an angle alpha and an angle beta, and the roll way surfaces of the inner cogs and the outer cogs are all cylindraulic arc surfaces with the radius of R; as the invention uses the roll way driving pair made up of the inner cogs, the outer cogs and roll balls and the angle gamma is formed between the central line of the inner cogs and the central line of the outer cogs, and thus the roll balls are effectively controlled and positioned on a cross point of the roll way always, and the roll balls can move along the cross point of the central line of the roll ways of the inner cogs and the outer cogs. The invention overcomes themain defects of the existing common coupling roll ways and the roll balls; the movement rack of the roll balls is not stable as the central line of the inner cogs and the outer cogs and the central line of the bearing coupling are arranged in parallel, and roll balls are easy to be clamped, which leads the stress in the bearing coupling is greatly increased to cause roll way arc deformation and failure. The invention is suitable for the coupling suitable for all heavy loads.

Description

technical field [0001] The invention relates to a cross raceway ball coupling. Background technique [0002] The existing "ordinary raceway" ball coupling is used in transmission with heavy load and impact, because the position of the ball in the raceway is sometimes in a free state (in the direction of the centerline of the raceway) and cannot return to the corresponding position in time , It is easy to cause the balls to be stuck and the stress will increase sharply, which will often cause the arc surface of the raceway to deform and fail, especially when the kink angle is large, the torque that can be transmitted by the "ordinary raceway" ball coupling often cannot be fully utilized. [0003] Just belong to this type of "common raceway" ball coupling for " a kind of ball coupler glazer " that authorized announcement number is CN 2378570Y. The applicant has carried out in-depth research and tests on this "ordinary raceway" ball coupling, and found that although this coupl...

AI Technical Summary

Problems solved by technology

The main defect is that the trajectory of the ball in the raceway does not completely follow the trajectory required by the design, and this trajectory deviation is not conducive to the operation of the ball universal coupling, mainly because of the extra internal stress that increases the raceway Deformation or even raceway surface failure

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