Ball screw pair structure with multi-point contact

Abstract

The utility model relates to the field of ball screws, in particular to a ball screw pair structure with multi-point contact, which comprises a screw rod, two ends of the screw rod are fixedly connected with round rods, a rolling chute is arranged on the screw rod, and balls are slidably connected in the rolling chute. When the ball screw is used, the sealing plate is opened, lubricating oil is added into the rectangular shell, the lubricating oil slides into the oil conveying nozzle along the first circular hole and the second circular hole, the rolling sliding groove and the ball are lubricated through the oil conveying nozzle, the sealing ring does not need to be taken out, and when the ball screw operates normally, the rectangular shell is sealed through the sealing plate, so that the sealing effect is good. Meanwhile, lubricating oil is added through the first round holes and the second round holes, the interior of the ball screw can be lubricated more quickly, it is guaranteed that the ball screw can be used normally, the structure is simple, and lubricating oil is convenient to add.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screws, in particular to a ball screw pair structure with multi-point contact. Background Art

[0002] Ball screws are also called ball screws. Ball screws are ideal products for converting rotary motion into linear motion, or converting linear motion into rotary motion. Ball screws are ideal products for converting rotary motion into linear motion, or converting linear motion into rotary motion. Ball screws are the most commonly used transmission components in tool machinery and precision machinery. Their main function is to convert rotary motion into linear motion, or torque into axial repetitive force. They are also characterized by high precision, reversibility and high efficiency. Due to their low friction resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] A ball screw is an ideal product for converting linear motion into rotary motion. After the ball screw has been running for a period of time, the friction becomes greater and lubricating oil needs to be added to the ball screw regularly. However, due to the sealing of the sealing ring of the existing ball screw, it is inconvenient to add lubricating oil. Therefore, a ball screw pair structure with multi-point contact is proposed. Utility Model Content

[0004] The utility model aims to solve the disadvantage that the existing ball screw needs to add lubricating oil regularly, but it is inconvenient to add lubricating oil due to the sealing of the sealing ring, and proposes a ball screw pair structure with multi-point contact.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A ball screw pair structure with multi-point contact comprises a screw rod, both ends of which are fixedly connected with round rods, a rolling groove is provided on the screw rod, and a ball is slidably connected in the rolling groove.

[0007] Preferably, round rods are fixedly connected to both ends of the screw rod, a rolling groove is provided on the screw rod, and a ball is slidably connected in the rolling groove.

[0008] Preferably, a first sealing ring is provided at one end of the nut close to the flange, a second sealing ring is provided at one end of the nut away from the flange, a plurality of first circular holes are provided on both sides of the nut, and a first rectangular groove is provided on both sides of the nut.

[0009] Preferably, a rectangular shell is arranged inside the first rectangular groove, a rectangular opening is opened on the top of the rectangular shell, and a second rectangular groove is opened on the top of the rectangular shell.

[0010] Preferably, a sealing plate is slidably connected in the second rectangular groove, and a second circular hole is opened at the bottom of the rectangular shell, and the second circular hole corresponds to the first circular hole.

[0011] Preferably, an oil delivery nozzle is provided at the first circular hole, and the lower part of the oil delivery nozzle corresponds to the rolling chute.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the device is in use, the sealing plate can be opened to add lubricating oil into the rectangular shell, and the lubricating oil can slide into the oil delivery nozzle along the first circular hole and the second circular hole, and the rolling slide groove and the ball can be lubricated through the oil delivery nozzle, and there is no need to remove the sealing ring. When the ball screw is operating normally, the sealing plate seals the rectangular shell without affecting the normal operation of the ball screw. At the same time, adding lubricating oil through the multiple first circular holes and the second circular holes can make the inside of the ball screw be lubricated faster. The utility model has a simple structure and is convenient for adding lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a ball screw pair structure with multi-point contact proposed by the utility model;

[0015] Figure 2 It is a cross-sectional three-dimensional structural schematic diagram of a ball screw pair structure with multi-point contact proposed by the utility model;

[0016] Figure 3 A schematic diagram of the three-dimensional structure of a rectangular opening and a second rectangular groove of a ball screw pair structure with multi-point contact proposed by the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of a first circular hole and an oil delivery nozzle of a ball screw pair structure with multi-point contact.

[0018] In the figure: 1, screw rod; 2, round rod; 3, rolling groove; 4, ball; 5, nut; 6, flange; 7, threaded hole; 8, first sealing ring; 9, second sealing ring; 10, first circular hole; 11, first rectangular groove; 12, rectangular shell; 13, rectangular mouth; 14, second rectangular groove; 15, sealing plate; 16, second circular hole; 17, oil delivery nozzle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1-Figure 4 A ball screw pair structure with multi-point contact includes a screw rod 1, two ends of the screw rod 1 are fixedly connected with round rods 2, a rolling groove 3 is opened on the screw rod 1, and a ball 4 is slidably connected in the rolling groove 3.

[0021] Furthermore, a nut 5 is disposed outside the screw rod 1 , one end of the nut 5 is fixedly connected to a flange 6 , and the flange 6 is provided with evenly distributed threaded holes 7 .

[0022] The threaded hole 7 on the flange 6 facilitates the installation of the ball screw, and the ball 4 slides back and forth in the threads of the rolling groove 3 and the inner wall of the nut 5.

[0023] Furthermore, a first sealing ring 8 is provided at one end of the nut 5 close to the flange 6 , a second sealing ring 9 is provided at one end of the nut 5 away from the flange 6 , a plurality of first circular holes 10 are provided on both sides of the nut 5 , and a first rectangular groove 11 is provided on both sides of the nut 5 .

[0024] The first sealing ring 8 and the second sealing ring 9 seal the flange 6 and the screw 1 , and lubricating oil is added to the ball 4 and the rolling groove 3 through the first circular hole 10 to ensure that the ball 4 rolls smoothly in the rolling groove 3 .

[0025] Furthermore, a rectangular shell 12 is disposed inside the first rectangular groove 11 , a rectangular opening 13 is opened at the top of the rectangular shell 12 , and a second rectangular groove 14 is opened at the top of the rectangular shell 12 .

[0026] After adding lubricating oil multiple times, the rectangular shell 12 can be taken out from the first rectangular groove 11 for cleaning.

[0027] Furthermore, a sealing plate 15 is slidably connected in the second rectangular groove 14 , and a second circular hole 16 is opened at the bottom of the rectangular shell 12 , and the second circular hole 16 corresponds to the first circular hole 10 .

[0028] Among them, the sealing plate 15 usually seals the rectangular opening 13 to ensure the normal operation of the ball screw. When lubricating oil needs to be added, the sealing plate 15 is opened, and lubricating oil is added to the second circular hole 16, and the lubricating oil falls into the first circular hole 10 through the second circular hole 16.

[0029] Furthermore, an oil delivery nozzle 17 is provided at the first circular hole 10 , and the lower part of the oil delivery nozzle 17 corresponds to the rolling chute 3 .

[0030] The lubricating oil lubricates the multi-channel rolling chutes 3 and the balls 4 in the rolling chutes 3 through a plurality of oil delivery nozzles 17 .

[0031] The working principle of this utility model:

[0032] When the ball screw needs to be lubricated, the sealing plate 15 is opened and lubricating oil is added into the rectangular shell 12. The lubricating oil slides into the oil nozzle 17 along the first circular hole 10 and the second circular hole 16, and the rolling chute 3 and the ball 4 are lubricated through the oil nozzle 17. There is no need to remove the sealing ring. When the ball screw is operating normally, the sealing plate 15 seals the rectangular shell 12 without affecting the normal operation of the ball screw. At the same time, adding lubricating oil through multiple first circular holes 10 and second circular holes 16 can lubricate the inside of the ball screw faster, ensuring that the ball screw can be used normally. The utility model has a simple structure and is convenient for adding lubricating oil.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball screw pair structure with multi-point contact, comprising a screw (1), characterized in that: Round rods (2) are fixedly connected to both ends of the screw rod (1), a rolling groove (3) is provided on the screw rod (1), and a ball (4) is slidably connected in the rolling groove (3).

2. A ball screw pair structure with multi-point contact according to claim 1, characterized in that: A nut (5) is disposed outside the screw rod (1), one end of the nut (5) is fixedly connected to a flange (6), and the flange (6) is provided with evenly distributed threaded holes (7).

3. A ball screw pair structure with multi-point contact according to claim 2, characterized in that: A first sealing ring (8) is provided at one end of the nut (5) close to the flange (6), and a second sealing ring (9) is provided at one end of the nut (5) away from the flange (6). A plurality of first circular holes (10) are provided on both sides of the nut (5), and first rectangular grooves (11) are provided on both sides of the nut (5).

4. A ball screw pair structure with multi-point contact according to claim 3, characterized in that: A rectangular shell (12) is arranged inside the first rectangular groove (11), a rectangular opening (13) is opened at the top of the rectangular shell (12), and a second rectangular groove (14) is opened at the top of the rectangular shell (12).

5. A ball screw pair structure with multi-point contact according to claim 4, characterized in that: A sealing plate (15) is slidably connected in the second rectangular groove (14), and a second circular hole (16) is opened at the bottom of the rectangular shell (12), and the second circular hole (16) corresponds to the first circular hole (10).

6. A ball screw pair structure with multi-point contact according to claim 3, characterized in that: An oil delivery nozzle (17) is provided at the first circular hole (10), and the lower part of the oil delivery nozzle (17) corresponds to the rolling chute (3).

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