Ball circulating mechanism of ball screw in linear module

Abstract

The utility model relates to the technical field of ball screws, in particular to a ball circulating mechanism of a ball screw in a linear module, which comprises a screw rod, a threaded groove is arranged on the screw rod, a plurality of balls are arranged in the threaded groove, a nut is arranged outside the screw rod, a plurality of ball channels are arranged in the nut, and the ball channels are communicated with the threaded groove. The end covers are symmetrically arranged at the two ends of the nut, the openings are formed in the end covers, the backflow channels are formed in the end covers, and by means of the structure of the lead screw, the threaded grooves, the balls, the nut, the ball ways, the end covers, the openings and the backflow channels, the problem that a traditional ball screw mechanism is not prone to falling under long-time and high-load operation is solved. The problems that friction resistance is large, abrasion is serious, transmission efficiency is not high, a rolling path is not smooth enough, the friction resistance is increased, and then transmission efficiency and precision are affected exist in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ball screw technology field, concretely is a ball circulation mechanism of ball screw in linear module. BACKGROUND

[0002] In modern mechanical transmission system, linear module as key assembly, is widely used in automation production line, precision machining equipment and various precision instruments. One of the core components of linear module is ball screw, its performance directly influences the transmission efficiency, precision and stability of whole system. Traditional ball screw mechanism under long time, high load operation, often exist friction resistance, serious wear, transmission efficiency is not high and service life is limited and so on. In traditional ball screw mechanism, the rolling path of ball between screw rod and nut is often not smooth enough, leading to increased friction resistance, and further affecting transmission efficiency and precision. In addition, ball is easy to jam or damage in the circulation process due to size mismatch or unreasonable design, further shortening the service life of ball screw.

[0003] Therefore, it is particularly important to design a ball circulation mechanism of ball screw in linear module to change the above technical defects and improve overall practicality. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a ball circulation mechanism of ball screw in linear module to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A ball circulation mechanism of ball screw in linear module, comprising a screw rod, a threaded groove is arranged on the screw rod, a plurality of balls are arranged in the threaded groove, a nut is arranged outside the screw rod, a plurality of ball channels are arranged in the nut, end covers are symmetrically arranged at both ends of the nut, openings are arranged on the end covers, and reflux channels are arranged in the end covers.

[0007] As a preferred scheme of the utility model, the cross-sectional shape of the threaded groove is arc-shaped, which matches the shape of the ball, reduces the friction resistance of the ball during rolling, and improves the transmission efficiency.

[0008] As a preferred scheme of the utility model, the ball channel matches the threaded groove, forms a continuous rolling path, and ensures smooth rolling of the ball between the screw rod and the nut.

[0009] As a preferred scheme of the utility model, the diameter of the opening is greater than the diameter of the ball, so that the ball can smoothly enter and leave the ball channel.

[0010] As the preferred scheme of the utility model, the shape and size of the backflow channel are designed to enable the ball to flow back from one end of the nut to the other end of the end cover, realize the infinite circulation of the ball, and the end cover is connected with the nut through bolts.

[0011] As the preferred scheme of the utility model, the ball is made of steel material, and the screw rod is made of alloy steel material, so that the service life and transmission precision of the ball and the screw rod are improved.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] In the utility model, the ball circulation mechanism of the ball screw in the linear module is provided, the structure of the screw rod, the thread groove, the ball, the nut, the ball channel, the end cover, the opening and the backflow channel is utilized, the ball rolls in the arc thread groove when the screw rod rotates, the nut screw groove pushes the ball to move the nut, the ball reaches the nut end, the ball enters the end cover backflow channel through the large diameter opening, the smooth backflow circulation of the ball is ensured, the traditional ball screw mechanism has the problems of large friction resistance, serious wear, low transmission efficiency, and the rolling path is not smooth enough, which leads to the increase of the friction resistance and further affects the transmission efficiency and precision. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the overall structural diagram of the utility model;

[0015] Fig. 2 It is the plane dissection schematic view of the utility model;

[0016] Fig. 3 It is the enlarged structural schematic view of A of the utility model.

[0017] In the drawing: 1, screw rod; 101, thread groove; 102, ball; 103, nut; 104, ball channel; 105, end cover; 106, opening; 107, backflow channel. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. Several embodiments of the utility model are given. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are for purposes of illustration only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0022] Embodiments, please see Figs. 1-3 The utility model provides a technical scheme:

[0023] A ball circulation mechanism of ball screw in linear module, including screw rod 1, be equipped with thread groove 101 on screw rod 1, be equipped with a plurality of ball 102 in the inside of thread groove 101, the outside of screw rod 1 is equipped with nut 103, the inside of nut 103 is equipped with a plurality of ball channel 104, the both ends of nut 103 are equipped with end cover 105 symmetrically, be equipped with opening 106 on end cover 105, the inside of end cover 105 is equipped with backflow channel 107, when screw rod 1 rotates, steel ball 102 starts to roll in the arc thread groove 101 on screw rod 1, at the same time, the ball groove of nut 103 is designed as spiral, make the rolling of ball 102 can push nut 103 along screw rod 1 and carry out linear motion, when ball 102 rolls to the one end of nut 103, they will pass through the opening 106 with the diameter greater than ball 102, smoothly enter the backflow channel 107 in the inside of end cover 105, this backflow channel 107 ensures that ball 102 can flow back from the one end of nut 103 to the other end smoothly, thereby realizing the infinite circulation of ball 102;

[0024] The cross-sectional shape of the thread groove 101 is arc-shaped, which matches the shape of the ball 102, used to reduce the friction resistance of the ball 102 during rolling, improve the transmission efficiency, reduce the friction resistance of the ball during rolling, because the arc-shaped groove can more evenly distribute the force on the ball, thereby improving the transmission efficiency, in addition, reducing friction also helps to reduce energy consumption, reduce wear and tear, and prolong the service life of the ball screw, the ball channel 104 matches the thread groove 101, used to form a continuous rolling path, to ensure that the ball 102 can smoothly roll between the screw 1 and the nut 103, to ensure that the ball can smoothly roll between the screw and the nut, unobstructed power and motion transmission, improve the stability and reliability of the system, also make the ball screw mechanism more stable and lower noise during movement, the opening 106 is larger in diameter than the ball 102, which facilitates the ball 102 to smoothly enter and exit the ball channel 104, avoiding jamming or damage due to size mismatch, the shape and size of the backflow channel 107 are designed to allow the ball 102 to smoothly flow from one end of the nut 103 to the other end through the end cover 105, realizing the infinite circulation of the ball, the end cover 105 is connected with the nut 103 by bolts, realizing the infinite circulation of the ball, the ball 102 is made of steel material, and the screw 1 is made of alloy steel material, used to improve the service life and transmission accuracy of the ball 102 and the screw 1.

[0025] The working process of the utility model: when the ball circulation mechanism of the ball screw in the linear module is used, first, when the screw 1 rotates, the steel ball 102 starts to roll in the arc-shaped thread groove 101 on the screw 1, at the same time, the ball groove of the nut 103 is designed to be spiral-shaped, so that the rolling of the ball 102 can push the nut 103 to move linearly along the screw 1, when the ball 102 rolls to one end of the nut 103, they will pass through an opening 106 larger in diameter than the ball 102, smoothly enter the backflow channel 107 inside the end cover 105, and the backflow channel 107 ensures that the ball 102 can smoothly flow from one end of the nut 103 to the other end, thereby realizing the infinite circulation of the ball 102.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A ball circulation mechanism of a ball screw in a linear module, comprising a screw rod (1), characterized in that: The screw rod (1) is provided with a threaded groove (101), the inside of the threaded groove (101) is provided with a plurality of balls (102), the outside of the screw rod (1) is provided with a nut (103), the inside of the nut (103) is provided with a plurality of ball channels (104), the both ends of the nut (103) are symmetrically provided with end covers (105), the end covers (105) are provided with openings (106), the inside of the end covers (105) is provided with reflux channels (107).

2. The ball circulation mechanism of a ball screw in a linear module according to claim 1, wherein: The cross-sectional shape of the threaded groove (101) is arc-shaped, which matches the shape of the ball (102), so as to reduce the frictional resistance of the ball (102) during rolling and improve the transmission efficiency.

3. The ball circulation mechanism of a ball screw in a linear module according to claim 1, wherein: The ball channel (104) matches the threaded groove (101) to form a continuous rolling path, so as to ensure that the ball (102) can smoothly roll between the screw rod (1) and the nut (103).

4. The ball circulating mechanism of a ball screw in a linear module according to claim 1, wherein: The diameter of the opening (106) is greater than the diameter of the ball (102), so that the ball (102) can smoothly enter and leave the ball channel (104).

5. The ball circulating mechanism of a ball screw in a linear module according to claim 1, wherein: The shape and size of the reflux channel (107) are designed to allow the ball (102) to smoothly pass through the end cover (105) from one end of the nut (103) to the other end, realizing the infinite circulation of the ball, and the end cover (105) and the nut (103) are connected by bolts.

6. The ball circulating mechanism of a ball screw in a linear module according to claim 1, wherein: The ball (102) is made of steel material, and the screw rod (1) is made of alloy steel material, so as to improve the service life and transmission accuracy of the ball (102) and the screw rod (1).

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