| 摘要 |
The present invention pertains to a ball circulating structure for linear guide assembly. The design of the invention is composed of loading grooves on rail, the connecting passage and directional guiding lip on sliding block. The objective of the invention is to reduce steel ball's angular acceleration when steel ball circulates between connecting passage and loading passage. In addition, this invention also intends to reduce the frictional resistance and noise of steel ball near the intersection between connecting passage and loading passage. In this invention, connecting passage is tangent to loading passage. There is quite a large radius of curvature near the tangent point. Especially, the radius of curvature of the tangent point is infinite. When the profile of the groove on trail rack is arc-shaped, there is one or two deep grooves on the sides of the groove. Therefore, directional guiding lip can be located deeply into the deep groove so that steel ball will not bump discontinuously when circulating between connecting passage and loading passage. In addition, the strength of directional guiding lip can be much increased.
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