Ball screw pair

Abstract

The utility model discloses a ball screw pair which comprises a device body, the device body comprises a lead screw, the lead screw is movably sleeved with a first ball screw pair, a fixing disc is arranged at the rear end of the first ball screw pair, the front end of the first ball screw pair is connected with a second ball screw pair, and a limiting ring is installed in the second ball screw pair. Screw holes are formed in the limiting ring and the second ball screw pair, annular bolts are in threaded connection with the interiors of the screw holes, an oil injection hole is formed in the fixing disc, a sealing bolt is in threaded connection with the interior of the oil injection hole, mounting holes are formed in the first ball screw pair and the second ball screw pair, the number of the mounting holes is multiple, and the sealing bolt is in threaded connection with the interior of the oil injection hole. And a plastic reverser is arranged in the mounting hole, so that a ball screw pair of the device can be subjected to oiling and lubricating treatment, the practicability of the device is improved, convenience is provided for a user, the safety of the device during operation is ensured, and the situation that the device is rusted and blocked in the operation process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball screw pairs, and in particular relates to a ball screw pair. Background Art

[0002] Ball screw pair is also called ball screw pair or ball screw pair. It is composed of two matching parts, a screw and a nut. It is the most accurate and most commonly used transmission device in transmission machinery. Ball screw pair is a spiral transmission element with steel balls as rolling bodies between the screw and the nut. It can convert rotary motion into linear motion, or convert linear motion into rotary motion. Therefore, ball screw pair is both a transmission element and a conversion element between linear motion and rotary motion.

[0003] After long-term use, the existing ball screw pair will experience severe wear and rust on the balls in the device, and the balls need to be maintained. Most of the existing maintenance methods are to disassemble and replace them, which has a high maintenance cost and affects the subsequent use of the device. Therefore, we need to upgrade and transform based on the existing technology. Utility Model Content

[0004] The utility model aims to provide a ball screw pair to solve the problems raised in the above background technology.

[0005] In order to solve the above problems, the following technical solutions are provided:

[0006] A ball screw pair is designed, including a device body, the device body includes a screw, a movable sleeve on the screw is provided with a ball screw pair 1, a fixed disk is provided at the rear end of the ball screw pair 1, and a ball screw pair 2 is connected to the front end of the ball screw pair 1, a limit ring is installed in the ball screw pair 2, screw holes are provided in the limit ring and the ball screw pair 2, annular bolts are threaded in the screw holes, an oil filling hole is provided in the fixed disk, and a sealing bolt is threaded in the oil filling hole.

[0007] Furthermore, the first ball screw pair and the second ball screw pair are provided with mounting holes, and the mounting holes are provided in multiple groups, and plastic reversers are provided in the mounting holes.

[0008] Furthermore, a plug-in groove is provided in the front end of the first ball screw pair, and a plug-in ring is fixedly provided at the front end of the second ball screw pair, and the plug-in ring is movably engaged in the plug-in groove.

[0009] Furthermore, positioning holes are provided above the plug-in slot and the plug-in ring, and there are multiple groups of positioning holes.

[0010] Furthermore, a rubber plug is connected below the sealing bolt, and the rubber plug is fixedly connected to the sealing bolt.

[0011] Furthermore, the limiting ring is movably connected to the second ball screw pair, and the limiting ring is threadedly connected to the screw.

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

[0013] 1. The utility model can lubricate the ball screw pair of the device by arranging the oil filling hole, the sealing bolt and the rubber plug, thereby increasing the practicality of the device, providing convenience for the user, ensuring the safety of the device during operation, and avoiding rust and jamming of the device during operation.

[0014] 2. The utility model provides a limit ring, screw holes and annular bolts, so that the device parts can be disassembled and assembled according to the use needs, which is convenient for the later maintenance of the device and avoids the trouble of inconvenient replacement in the later stage.

[0015] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of a ball screw pair according to the utility model;

[0018] Figure 2 It is an exploded view of the ball nut structure of a ball screw pair according to the utility model;

[0019] Figure 3 A cross-sectional view of a ball nut structure of a ball screw pair according to the utility model;

[0020] Figure 4 It is a sectional exploded view of a protective structure of a ball screw pair according to the utility model;

[0021] Figure 5 The utility model is a sectional exploded view of the disassembly and assembly structure of a ball screw pair.

[0022] In the figure: 1. Device body; 2. Lead screw; 3. Ball screw pair 1; 4. Fixed plate; 5. Mounting hole; 6. Plastic reverser; 7. Ball screw pair 2; 8. Plug-in groove; 9. Plug-in ring; 10. Positioning hole; 11. Oil filling hole; 12. Sealing bolt; 121. Rubber plug; 13. Limiting ring; 14. Screw hole; 15. Ring bolt. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1 - Figure 5 As shown, a ball screw pair provided in this embodiment includes a device body 1, which includes a screw 2, a ball screw pair 3 is provided on the movable sleeve of the screw 2, a fixed plate 4 is provided at the rear end of the ball screw pair 3, and a ball screw pair 2 7 is connected to the front end of the ball screw pair 3, a limit ring 13 is installed in the ball screw pair 2 7, screw holes 14 are provided in the limit ring 13 and the ball screw pair 2 7, an annular bolt 15 is screwed in the screw hole 14, an oil filling hole 11 is provided in the fixed plate 4, and a sealing bolt 12 is screwed in the oil filling hole 11.

[0025] Preferably, the ball screw pair 1 3 and the ball screw pair 2 7 are provided with mounting holes 5, and the mounting holes 5 are provided with multiple groups. The mounting holes 5 are provided with plastic deflectors 6, which are convenient for installing and fixing the plastic deflectors 6, and ensure the safety of the plastic deflectors 6 when in use. The front end of the ball screw pair 1 3 is provided with a plug-in slot 8, and the front end of the ball screw pair 2 7 is fixedly provided with a plug-in ring 9, and the plug-in ring 9 is movably engaged in the plug-in slot 8, so that the ball screw pair 1 3 and the ball screw pair 2 7 can be connected, which increases the connection and intimacy between the devices. The plug-in slot 8 and the plug-in ring 9 are provided with positioning holes 10 above, and the positioning holes 10 are provided with multiple groups. By providing the positioning holes 10, the device can be fixed and limited, and the safety of the ball screw pair 1 3 and the ball screw pair 2 7 when in use is ensured.

[0026] Preferably, a rubber plug 121 is connected below the sealing bolt 12, and the rubber plug 121 is fixedly connected to the sealing bolt 12. By providing the rubber plug 121, the safety and sealing of the sealing bolt 12 are further increased, and the lubricating oil is prevented from leaking from the oil filling hole 11. The limit ring 13 is movably connected to the ball screw pair 7, and the limit ring 13 is threadedly connected to the screw 2, which increases the connectivity and intimacy between the devices.

[0027] The use principle and use process of the utility model are as follows: when in use, the sealing bolt 12 is rotated and taken out from the oil filling hole 11 with the help of a tool. When the sealing bolt 12 moves upward, it drives the rubber plug 121 to move therewith until it is completely separated from the oil filling hole 11, and the lubricating oil is injected into the device along the opening direction of the oil filling hole 11. After the injection is appropriate, the sealing bolt 12 can be fixed again, and the ball screw pair of the device can be lubricated, which increases the practicality of the device, provides convenience for the user, ensures the safety of the device during operation, and avoids rust and jamming of the device during operation. When the device needs to disassemble the limit ring 13 during use, the annular bolt 15 is rotated and taken out from the screw hole 14. At this time, the limit ring 13 is separated from the ball screw pair 7, and the limit ring 13 can be removed from the screw rod 2. The device parts can be disassembled and assembled according to the needs of use, which is convenient for the later maintenance of the device and avoids the trouble of inconvenient replacement in the later stage.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The present invention is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on the spirit and principles of the present invention, and these modifications and variations are also within the scope of the present invention.

Claims

1. A ball screw pair, characterized in that: The invention comprises a device body (1), wherein the device body (1) comprises a screw (2), a movable sleeve on the screw (2) is provided with a ball screw pair (3), a fixed plate (4) is provided at the rear end of the ball screw pair (3), and a ball screw pair (7) is connected to the front end of the ball screw pair (3), a limit ring (13) is installed in the ball screw pair (7), a screw hole (14) is provided in the limit ring (13) and the ball screw pair (7), a ring bolt (15) is screwed in the screw hole (14), an oil filling hole (11) is provided in the fixed plate (4), and a sealing bolt (12) is screwed in the oil filling hole (11).

2. A ball screw pair according to claim 1, characterized in that: The first ball screw pair (3) and the second ball screw pair (7) are both provided with mounting holes (5), the mounting holes (5) are provided with a plurality of groups, and plastic deflectors (6) are provided in the mounting holes (5).

3. A ball screw pair according to claim 2, characterized in that: A plug-in groove (8) is provided in the front end of the first ball screw pair (3), and a plug-in ring (9) is fixedly provided at the front end of the second ball screw pair (7), and the plug-in ring (9) is movably engaged in the plug-in groove (8).

4. A ball screw pair according to claim 3, characterized in that: Positioning holes (10) are provided above the plug-in slot (8) and the plug-in ring (9), and there are multiple groups of positioning holes (10).

5. A ball screw pair according to claim 1, characterized in that: A rubber plug (121) is connected below the sealing bolt (12), and the rubber plug (121) is fixedly connected to the sealing bolt (12).

6. A ball screw pair according to claim 1, characterized in that: The limiting ring (13) is movably connected to the second ball screw pair (7), and the limiting ring (13) is threadedly connected to the screw (2).

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