Reflux bending pipe auxiliary device and ball screw using same

Abstract

The invention discloses a reflux bending pipe auxiliary device and a ball screw using the same. The reflux bending pipe auxiliary device mainly comprises a top face, a bottom end and a peripheral wall, the peripheral wall is in a vertical wall face shape relative to a radial base line defined by a nut, an arc-shaped face is formed in one side of the bottom end, an inclined pipe inserting hole extending downwards is formed in the top face, the inclined pipe inserting hole extends downwards at an inclined angle relative to the radial base line, one part of the lower end of the inclined pipe inserting hole penetrates out to form a penetrating opening, a partition wall thickness is formed between the other part of the lower end of the inclined pipe inserting hole and the bottom end to form a stop end wall, and an embedding and clamping part is further formed in the stop end wall; a connecting surface is formed in the inner side of the partition wall thickness, and a inner diameter of the connecting surface is smaller than that of the inclined pipe inserting hole.

Description

technical field [0001] The invention relates to a ball screw; in particular, it refers to a structure of a return elbow auxiliary device of the ball screw. Background technique [0002] In terms of the structure design of the ball screw, the part related to the ball return flow has always been one of the key points for the development and breakthrough of related industries. [0003] According to the relevant previous technical data at present, the forms adopted by the ball reflux are mainly divided into two types: outer circulation type and inner circulation type, and the present invention especially discusses the structure form of the outer circulation type among them, and then discusses the outer circulation type As far as the structure is concerned, it mainly uses a return pipe to guide and displace several rollers (balls or rollers) from one part of the nut to another. [0004] The constituent elements of the return pipe mentioned in the previous paragraph usually inclu...

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Problems solved by technology

[0004] The constituent elements of the return pipe mentioned in the previous paragraph usually include the pipe body and the two-legged seat. As far as the existing specific implementation forms of the pipe body and the two-legged seat are concerned, they can be roughly divided into two types: one-piece type and split type. Each shape has its own advantages and disadvantages. Take the one-piece shape as an example. Plastic materials are usually used for injection molding. Although the components are the most streamlined, the longer the tube size, the higher the probability of bending deformation of the finished product. Therefore, for The structural conditions of some ball screws are not suitable; taking the split structure as an example, usually the elbow section of the tube body is inserted into the foot seat at a vertical angle, and the extension direction of the tube body is set in the same direction as the screw The extension axes of the nuts are obliquely staggered with each other, so there are still some problems and disadvantages in its application, such as the exposed volume of the tube body is too large, the combination of the tube body and the foot seat is not stable, and the processing is not easy (For example, multi-axis processing is required) and the smoothness of the connection of the return channel is not good, etc.; and the present invention is an innovative breakthrough especially for this kind of split ball screw return structure

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