Improved end plug type double-end ball screw pair

Abstract

The utility model discloses an improved end plug type double-end ball screw pair, and relates to the technical field of ball screw pairs, the improved end plug type double-end ball screw pair comprises a screw body, an upper nut body and a lower nut body are movably arranged on the outer surface of the screw body, and one ends of the opposite surfaces of the upper nut body and the lower nut body are jointly provided with a dismounting assembly. An oil storage assembly is arranged at one end of the upper nut body and comprises two sliding grooves, the two sliding grooves are formed in the two sides of one end of the upper nut body, threaded rods are rotationally connected to the inner walls of one sides of the two sliding grooves, and sliding blocks are connected to the outer surfaces of the two threaded rods in a sleeved mode. According to the ball screw pair, lubricating oil can be stored conveniently, so that the using effect of the lubricating oil is better, the practicability of the ball screw pair is improved, by arranging the disassembling assembly, the nut can be disassembled conveniently, balls can be replaced conveniently, and the using convenience of the ball screw pair is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screw pairs, in particular to an improved end-plug type double-head ball screw pair. Background Art

[0002] Ball screw pairs are the most commonly used transmission elements in tool machinery and precision machinery. Their main function is to convert rotational motion into linear motion, or to convert torque into axial repetitive force. They also have the characteristics of high precision, reversibility and high efficiency. Due to their very small friction resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] After checking the announcement number: CN212690729 U, an end-plug double-ended ball screw pair is disclosed. This technology discloses "a ball nut is mounted on the ball screw, a matching double-ended thread raceway is provided between the ball screw and the ball nut, and a steel ball is arranged in the double-ended thread raceway; a wall hole for the circulation of the steel ball is provided on the ball nut, and stepped countersunk holes for guiding and connecting the end plug return device are provided at both ends of the wall hole, and stepped grooves for installing the end plug return device are also provided at both ends of the wall hole; the wall hole and the end plug return device form a closed circulation channel for the steel ball movement; the double-ended thread raceway each has a closed circulation channel for the steel ball movement, and other technical solutions have strong bearing capacity, low noise in use, simple and convenient technical effects, etc.";

[0004] First, the existing end-plug type double-ended ball screw pair does not have an oil storage component. When the end-plug type double-ended ball screw pair is in use, the balls arranged between the inner wall of the nut and the screw body need to be lubricated to make the screw pair smoother and more convenient to use. The existing oil inlet hole is generally not provided with a protective shell. The lubricating oil may leak out during use. There is no oil storage component, which makes it inconvenient to store the lubricating oil so as to improve the use effect of the lubricating oil, thereby reducing the practicality of the ball screw pair. Secondly, the existing end-plug type double-ended ball screw pair does not have a disassembly component. After the ball screw pair is used many times, the balls are easily damaged, so the damaged balls need to be replaced and repaired. The nuts in the existing ball screw pairs are generally inseparable as a whole, which makes it time-consuming and laborious to replace the damaged balls. There is no disassembly component, which makes it inconvenient to disassemble the nuts and replace the balls, thereby reducing the convenience of using the ball screw pair. Therefore, there is room for improvement. Utility Model Content

[0005] The purpose of the present application is to provide an improved end-plug type double-ended ball screw pair, which is convenient for storing lubricating oil so that the use effect of the lubricating oil is better and it is convenient to disassemble the nut and replace the ball.

[0006] The improved end-plug double-ended ball screw pair provided in this application adopts the following technical solution:

[0007] 14. The invention relates to an improved end-plug double-ended ball screw pair, comprising a screw body, an upper nut body and a lower nut body being movably provided on the outer surface of the screw body, a disassembly assembly being jointly provided at one end of the opposite surfaces of the upper nut body and the lower nut body, an oil storage assembly being provided at one end of the upper nut body, the oil storage assembly comprising a slide groove, two of which are provided, the two slide grooves are both opened on both sides of one end of the upper nut body, a threaded rod is rotatably connected to the inner wall of one side of the two slide grooves, a slider is sleeved on the outer surface of the two threaded rods, and a connecting rod is fixedly connected to one end of the two sliders, through grooves for cooperating with the two connecting rods are provided at both ends of the upper nut body, an oil storage hole is provided at the top of the upper nut body, and the ends of the two connecting rods facing away from the slider respectively pass through the two through grooves and are jointly fixedly connected with a protective shell for cooperating with the oil storage hole.

[0008] By adopting the above technical solution, firstly, lubricating oil is injected into the oil storage hole to lubricate the ball, and then the threaded rod is rotated, the rotation of the threaded rod drives the slider to move, the movement of the slider drives the connecting rod to move, and the movement of the two connecting rods drives the protective shell to move, so that the protective shell blocks the oil storage hole to prevent the lubricating oil from leaking, thereby improving the practicality of the ball screw pair.

[0009] Optionally, the disassembly assembly includes a positioning rod, two of which are provided, the bottom ends of the two positioning rods are respectively fixedly connected to the two sides of the top end of the lower nut body, and positioning grooves for cooperating with the positioning rods are provided on both sides of the bottom end of the upper nut body, a first threaded hole is provided at one end of the two positioning rods, and second threaded holes for cooperating with the first threaded holes are provided at both ends of the upper nut body, and bolts are inserted into the inner walls of the first threaded hole and the second threaded hole.

[0010] By adopting the above technical solution, the bolt is unscrewed from the first threaded hole and the second threaded hole, and then the positioning rod is pulled out from the positioning groove, so that the upper nut body and the lower nut body are separated, and the damaged ball is replaced and repaired, thereby improving the convenience of using the ball screw pair.

[0011] Optionally, a knob is fixedly connected to the inner wall of the two threaded rods on one side facing away from the slide groove.

[0012] By adopting the above technical solution, the knob plays a role in facilitating the rotation of the threaded rod.

[0013] Optionally, the inner wall of the protective shell is arc-shaped, and the inner wall of the protective shell is slidably fitted with the outer surface of the upper nut body.

[0014] By adopting the above technical solution, it is convenient for the protective shell to seal the oil storage hole opened on the upper nut body.

[0015] Optionally, the upper nut body and the lower nut body are distributed in a mirror image.

[0016] By adopting the above technical solution, it is convenient to use the upper nut body and the lower nut body in coordination.

[0017] Optionally, a bead entry hole is provided at one end of the upper nut body.

[0018] By adopting the above technical solution, the ball inlet hole facilitates the addition of balls into the ball screw pair.

[0019] Optionally, the inner wall threads of the upper nut body and the lower nut body match the outer surface threads of the screw body.

[0020] By adopting the above technical solution, it is convenient to use the upper nut body and the lower nut body in conjunction with the screw body.

[0021] Optionally, the shape of the positioning rod is the same as the shape of the positioning groove.

[0022] By adopting the above technical solution, the shape of the positioning rod and the positioning groove are convenient for use in coordination.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The utility model sets an oil storage component, rotates the knob, the knob drives the threaded rod to rotate, the threaded rod rotates to drive the slider to move, the slider moves through the connecting rod to drive the protective shell to move, the protective shell moves to block the oil storage hole, and prevents the lubricant in the oil storage hole from flowing out, thereby facilitating the storage of lubricating oil and making the use of lubricating oil better, thereby improving the practicality of the ball screw pair;

[0025] 2. The utility model sets a disassembly component, unscrews the bolt from the first threaded hole and the second threaded hole, and then pulls the positioning rod out of the positioning groove, so that the upper nut body and the lower nut body are separated, and the damaged ball is replaced and repaired, thereby facilitating the disassembly of the nut and replacing the ball, thereby improving the convenience of using the ball screw pair. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the utility model.

[0028] Figure 2 This is a schematic diagram of the structure of the oil storage component of the utility model.

[0029] Figure 3 This is a schematic structural diagram of the oil storage assembly of the utility model from another perspective.

[0030] Figure 4 This is a schematic diagram of the disassembly component structure of the utility model.

[0031] In the figure: 1. Screw body; 2. Oil storage assembly; 21. Protective shell; 22. Threaded rod; 23. Knob; 24. Through groove; 25. Slide groove; 26. Connecting rod; 27. Slider; 28. Oil storage hole; 3. Disassembly assembly; 31. First threaded hole; 32. Positioning rod; 33. Positioning groove; 34. Second threaded hole; 35. Bolt; 4. Upper nut body; 5. Lower nut body; 6. Bead hole. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0033] Example 1

[0034] An improved end plug type double-ended ball screw pair, refer to Figure 1 , Figure 2 and Figure 3 , including a screw body 1, an upper nut body 4 and a lower nut body 5 are movably provided on the outer surface of the screw body 1, the upper nut body 4 and the lower nut body 5 play a role in facilitating the use of the screw body 1, and a disassembly component 3 is commonly provided at one end of the upper nut body 4 and the lower nut body 5 on the opposite side, and the disassembly component 3 plays a role in facilitating the disassembly and replacement of the ball, and an oil storage component 2 is provided at one end of the upper nut body 4, and the oil storage component 2 plays a role in facilitating the blocking of the lubricating oil to prevent the lubricating oil from flowing out during use, and the oil storage component 2 includes a slide groove 25, and the slide groove 25 is provided with two, and the two slide grooves 25 are both opened on both sides of one end of the upper nut body 4, and one of the two slide grooves 25 The side inner walls are rotatably connected with threaded rods 22, and the outer surfaces of the two threaded rods 22 are sleeved with sliders 27, so that the threaded rods 22 rotate to drive the sliders 27 to move, and one end of the two sliders 27 is fixedly connected with a connecting rod 26, so that the sliders 27 can move and drive the connecting rods 26 to move. Both ends of the upper nut body 4 are provided with through grooves 24 used to cooperate with the two connecting rods 26, and the top of the upper nut body 4 is provided with oil storage holes 28. The ends of the two connecting rods 26 facing away from the sliders 27 respectively penetrate the two through grooves 24 and are fixedly connected with a protective shell 21 used to cooperate with the oil storage hole 28, so that the two connecting rods 26 can move and drive the protective shell 21 to move to block the oil storage hole 28.

[0035] Reference Figure 2 The inner walls of the two threaded rods 22 on one side facing away from the slide slot 25 are fixedly connected with knobs 23 , and the knobs 23 serve to facilitate the rotation of the threaded rods 22 .

[0036] Reference Figure 2 The inner wall of the protective shell 21 is in an arc shape, and the inner wall of the protective shell 21 is slidingly fitted with the outer surface of the upper nut body 4, so that the protective shell 21 can seal the oil storage hole 28 more tightly.

[0037] Reference Figure 1 The upper nut body 4 and the lower nut body 5 are distributed in a mirror image, which facilitates the coordinated use of the upper nut body 4 and the lower nut body 5.

[0038] Reference Figure 1 A ball inlet hole 6 is provided at one end of the upper nut body 4, which facilitates adding balls to the ball screw pair.

[0039] Reference Figure 1 The inner wall threads of the upper nut body 4 and the lower nut body 5 match the outer surface threads of the screw body 1, so that the upper nut body 4 and the lower nut body 5 can be used in conjunction with the screw body 1.

[0040] The implementation principle of the embodiment of the present application is: first, add balls to the ball screw pair through the ball inlet hole 6, then inject lubricating oil through the oil storage hole 28, and then rotate the knob 23 through the oil storage assembly 2. The rotation of the knob 23 drives the threaded rod 22 to rotate, and the rotation of the threaded rod 22 drives the slider 27 to move. The movement of the slider 27 drives the connecting rod 26 to move, and the movement of the connecting rod 26 drives the protective shell 21 to move, so that the protective shell 21 moves to a position where the oil storage hole 28 can be blocked, and the oil storage hole 28 is blocked, thereby improving the use effect of the lubricating oil and preventing the lubricating oil from leaking.

[0041] Example 2

[0042] The difference between this embodiment and embodiment 1 is that:

[0043] Reference Figure 4 The disassembly assembly 3 includes a positioning rod 32, and two positioning rods 32 are provided. The bottom ends of the two positioning rods 32 are fixedly connected to the two sides of the top end of the lower nut body 5 respectively, and positioning grooves 33 for cooperating with the positioning rods 32 are provided on both sides of the bottom end of the upper nut body 4. The positioning grooves 33 play a role in cooperating with the positioning rods 32. One end of the two positioning rods 32 is provided with a first threaded hole 31, and both ends of the upper nut body 4 are provided with a second threaded hole 34 for cooperating with the first threaded hole 31. The inner walls of the first threaded hole 31 and the second threaded hole 34 are jointly inserted with bolts 35. The bolts 35 are used in conjunction with the first threaded hole 31 and the second threaded hole 34 to facilitate the disassembly of the upper nut body 4 and the lower nut body 5, so as to facilitate the replacement of damaged balls.

[0044] Reference Figure 4 The shape of the positioning rod 32 is the same as the shape of the positioning groove 33 , which facilitates the use of the positioning groove 33 in conjunction with the positioning rod 32 .

[0045] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An improved end-plug type double-ended ball screw pair, comprising a screw body (1), characterized in that: An upper nut body (4) and a lower nut body (5) are movably provided on the outer surface of the screw body (1); a disassembly assembly (3) is provided at one end of the opposite surfaces of the upper nut body (4) and the lower nut body (5); and an oil storage assembly (2) is provided at one end of the upper nut body (4); The oil storage assembly (2) comprises a slide groove (25), wherein two slide grooves (25) are provided, and the two slide grooves (25) are both opened on both sides of one end of the upper nut body (4), and the inner walls of one side of the two slide grooves (25) are rotatably connected with a threaded rod (22), and the outer surfaces of the two threaded rods (22) are sleeved with a slider (27), and one end of the two sliders (27) is fixedly connected with a connecting rod (26), and both ends of the upper nut body (4) are provided with a through groove (24) used to cooperate with the two connecting rods (26), and the top of the upper nut body (4) is provided with an oil storage hole (28), and the ends of the two connecting rods (26) facing away from the slider (27) respectively penetrate the two through grooves (24) and are fixedly connected with a protective shell (21) used to cooperate with the oil storage hole (28).

2. An improved end-plug type double-ended ball screw pair as claimed in claim 1, characterized in that: The disassembly assembly (3) comprises a positioning rod (32), wherein two positioning rods (32) are provided, and the bottom ends of the two positioning rods (32) are respectively fixedly connected to the two sides of the top end of the lower nut body (5), and the bottom ends of the upper nut body (4) are provided with positioning grooves (33) for cooperating with the positioning rods (32), and one end of the two positioning rods (32) is provided with a first threaded hole (31), and the two ends of the upper nut body (4) are provided with a second threaded hole (34) for cooperating with the first threaded hole (31), and the inner walls of the first threaded hole (31) and the second threaded hole (34) are jointly inserted with bolts (35).

3. An improved end-plug type double-ended ball screw pair as claimed in claim 1, characterized in that: The inner walls of the two threaded rods (22) on one side facing away from the slide groove (25) are both fixedly connected with a knob (23).

4. An improved end-plug type double-ended ball screw pair as claimed in claim 1, characterized in that: The inner wall of the protective shell (21) is in an arc shape, and the inner wall of the protective shell (21) is slidably fitted with the outer surface of the upper nut body (4).

5. An improved end-plug type double-ended ball screw pair as claimed in claim 1, characterized in that: The upper nut body (4) and the lower nut body (5) are distributed in a mirror image.

6. An improved end-plug type double-ended ball screw pair as claimed in claim 1, characterized in that: A bead entry hole (6) is formed at one end of the upper nut body (4).

7. An improved end-plug type double-ended ball screw pair as claimed in claim 1, characterized in that: The inner wall threads of the upper nut body (4) and the lower nut body (5) match the outer surface threads of the screw body (1).

8. An improved end-plug type double-ended ball screw pair as claimed in claim 2, characterized in that: The shape of the positioning rod (32) is the same as the shape of the positioning groove (33).

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