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公开(公告)号：EP2058411B1
公开(公告)日：2014-02-19
申请号：EP06823432.7
申请日：2006-11-09
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公开(公告)号：EP3279514A1
公开(公告)日：2018-02-07
申请号：EP16772876.5
申请日：2016-03-29
发明人： NARUMIYA, Hiroki , KADA, Osamu , FUJITA, Takashi , NEISHI, Yutaka
摘要： A gear keeping the bending stress at the dedendum from becoming locally high at the time of power transmission and thereby raising the dedendum bending strength is provided. The radius of curvature is maximum at a critical section position determined by the Hofer's 30° tangent method. Both of the radii of curvature from the critical section position to the first and second connecting points X1 and Y1 are constant or decreasing. In the dedendum line segment 23, there are the points A1 and B1 where the radius of curvature is smaller than the critical section position. In the dedendum line segment 23, the maximum radius of curvature is 3 times or less the minimum radius of curvature. By a cross-sectional view, the critical section position is part of an arc, and the arc extends to the two sides of the critical section position. Due to this, the maximum bending stress becomes smaller and improvement of the dedendum bending strength can be realized.
摘要翻译： 提供一种保持齿根弯曲应力不会在动力传递时局部变高的齿轮，从而提高齿根弯曲强度。 曲率半径在由霍费尔30°切线方法确定的临界截面位置处是最大的。 从临界截面位置到第一和第二连接点X1和Y1的曲率半径都是恒定的或者减小的。 在齿根线段23中，存在曲率半径小于临界截面位置的点A1和B1。 在齿根线段23中，最大曲率半径是最小曲率半径的3倍或更小。 通过横截面图，临界截面位置是弧的一部分，并且弧延伸到临界截面位置的两侧。 由此，最大弯曲应力变小，能够实现齿根弯曲强度的提高。
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公开(公告)号：EP3267058A1
公开(公告)日：2018-01-10
申请号：EP16758972.0
申请日：2016-03-02
CPC分类号： F16C33/585 , F16C19/06 , F16C19/10 , F16C33/64 , F16C2220/46 , F16C2220/60 , F16C2223/10 , F16C2240/50 , F16C2240/70
摘要： A ball bearing not allowing locations where the surface pressure becomes locally higher at a race at the time of a high load and thereby keeping cracking from occurring and in turn realizing a longer lifespan is provided. A pair of races (12, 14) and at least one rolling element (16) movably clamped between the pair of races move are provided. A cross-sectional profile line (14a) of a part of each of the pair of races contacting the rolling element has the smallest radius of curvature at a position (P) sticking out the most in the first direction (D1) over which the pair of races face. The cross-sectional profile line becomes larger in radius of curvature the further from the position (P) in a second direction (D2) vertical to the first direction (D1) in the cross-section. The cross-sectional profile line is comprised of a single function. When a midpoint of the profile line in the second direction is the origin, an axis extending in the second direction is the X-axis and the axis extending in the first direction is the Y-axis, and a radius of the rolling element is (R), the cross-sectional profile line satisfies equation (1): X 2 / 2 R 1 + 0.05 Y X 2 / 2 R 1 − 0.05
摘要翻译： 本发明提供一种滚珠轴承，该滚珠轴承在高负荷时不允许表面压力局部地较高的位置处发生断裂，从而实现较长的使用寿命。 设有一对座圈（12,14）和至少一个可移动地夹持在这对座圈之间的滚动元件（16）。 与滚动元件接触的一对滚道中的每一个的一部分的横截面轮廓线（14a）在沿第一方向（D1）突出最多的位置（P）处具有最小的曲率半径， 的种族面孔。 截面轮廓线的曲率半径在与截面中垂直于第一方向（D1）的第二方向（D2）上的位置（P）相比更远处变大。 横截面轮廓线由单一功能组成。 当第二方向上的轮廓线的中点是原点时，沿第二方向延伸的轴是X轴，并且沿第一方向延伸的轴是Y轴，并且滚动元件的半径是（ R）时，截面轮廓线满足式（1）：X2 / 2R1 + 0.05
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