End face reverser for ball screw pair

Abstract

The utility model relates to the technical field of ball screw pairs, and discloses an end face reverser for a ball screw pair, which comprises an end face reverser arranged between a lead screw and a nut sleeve. A ball guide groove is formed in the end face reverser, one end of the ball guide groove extends to the top face of the end face reverser in an arc track mode, and the other end of the ball guide groove horizontally extends to penetrate through the end face reverser. Compared with the prior art, the nut sleeve has the advantages that the sealing performance of the nut sleeve can be improved, so that noise generated in the using process is reduced, and the relative silence effect is achieved; the circulation performance of the balls can be effectively optimized, the friction force and impact between the balls and the end face reverser are reduced, the collision stress is more uniform, and the requirements of high-performance and high-precision machinery are met; efficient and stable circulation of the balls can be ensured, the mechanical precision is improved, and transmission errors are reduced; the overall performance, including the transmission efficiency, the bearing capacity and the precision grade, of the ball screw pair can be improved.

Description

Technical Field

[0001] This utility model relates to the field of ball screw pair technology, specifically to an end face reverser used in ball screw pairs. Background Technology

[0002] A ball screw assembly, also known as a ball screw pair or ball screw assemblies, consists of two matching parts: a screw and a nut. It is currently the most precise and commonly used transmission device in mechanical transmission systems.

[0003] Currently, existing ball screw assemblies still have certain shortcomings in use: the sealing performance of ball screw assemblies is not good enough, and they are prone to noise during use. Errors are also prone to occur during transmission, resulting in insufficient mechanical precision. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide an end face reverser for ball screw pairs, which has better sealing performance, is less likely to generate noise during use, and makes the ball movement efficient and stable, thus making the transmission accuracy of the ball screw pairs higher.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] An end face reverser for a ball screw assembly includes an end face reverser disposed between the screw and the nut sleeve; a ball guide groove is formed on the end face reverser, and one end of the ball guide groove extends in an arc trajectory to the top surface of the end face reverser, while the other end extends horizontally through the end face reverser, and the ball enters the return ball channel between the screw and the nut sleeve along the ball guide groove.

[0007] As an improvement, a locking protrusion is formed on the bottom or top side of the end face reverser, and a corresponding locking groove is reserved on the inner wall of the nut sleeve to match the locking protrusion. This is used for positioning and installing the end face reverser.

[0008] The advantages of this utility model compared with the prior art are as follows:

[0009] This invention can increase the sealing performance of the nut sleeve to reduce noise generated during use, achieving a relatively quiet effect; it can effectively optimize the flow of balls, reduce friction and impact between the balls and the end face reverser, making the collision force more uniform to meet the needs of high-performance and high-precision machinery; it can ensure efficient and stable ball circulation, improve mechanical accuracy and reduce transmission errors; it helps to improve the overall performance of the ball screw pair, including transmission efficiency, load-bearing capacity and accuracy level; it also facilitates the installation and use of the machine tool nut sleeve and reduces damage. Attached Figure Description

[0010] Figure 1This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0011] Figure 2 This is a structural schematic diagram from another perspective of Embodiment 1 of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0013] Figure 4 This is a structural schematic diagram from another perspective of Embodiment 2 of this utility model.

[0014] As shown in the figure: 1. End face reverser; 2. Ball guide groove; 3. Engagement protrusion; 4. Ball adding port. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Example 1

[0018] An end-face reverser for a ball screw assembly includes an end-face reverser 1 disposed between the screw and the nut sleeve. The end-face reverser 1 has a ball guide groove 2, one end of which extends in an arc trajectory to the top surface of the end-face reverser 1, and the other end extends horizontally through the end-face reverser 1. Balls enter the return ball channel between the screw and the nut sleeve along the ball guide groove 2. A retaining protrusion 3 is formed on the bottom or top side of the end-face reverser 1, and a corresponding retaining groove adapted to the retaining protrusion 3 is pre-reserved on the inner wall of the nut sleeve.

[0019] In this embodiment, the balls are placed into the ball guide groove 2 and guided into the return ball channel through the interface tangent to the thread raceway of the ball screw pair, forming a closed loop path.

[0020] Example 2

[0021] Based on the above embodiments, a ball adding port 4 is formed on the top surface of the end face reverser 1 corresponding to the inlet end of the ball guide groove 2.

[0022] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An end-face reversing device for ball screw assemblies, characterized in that: It includes an end face reverser (1) disposed between the lead screw and the nut sleeve; a ball guide groove (2) is formed on the end face reverser (1), and one end of the ball guide groove (2) extends to the top surface of the end face reverser (1) in an arc trajectory, and the other end extends horizontally through the end face reverser (1), and the ball enters the return ball channel between the lead screw and the nut sleeve along the ball guide groove (2).

2. The end-face reversing device for a ball screw assembly according to claim 1, characterized in that: The end face reverser (1) has a locking protrusion (3) formed on its bottom or top side, and the inner wall of the nut sleeve has a corresponding locking groove that matches the locking protrusion (3).

3. The end-face reversing device for a ball screw assembly according to claim 1, characterized in that: The end face reverser (1) has a ball adding port (4) formed on the top surface corresponding to the inlet end of the ball guide groove (2).

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