Left-handed high-precision high-speed ball nut
By designing a left-hand high-precision high-speed ball nut, including oil storage bag and extrusion mechanism, the automatic addition of lubricating oil is achieved, solving the time-consuming and labor-intensive problem of lubricating oil addition in the prior art, improving work efficiency and maintaining high precision Mobile performance.
Patent Information
- Application Number
- CN202421479323.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-26
AI Technical Summary
During use, existing ball nuts are worn and frictional resistance due to friction between the ball and the inner wall of the nut, which affects its high-precision moving performance. It also requires operators to spend a lot of time, time-consuming and labor-intensive, and affects work efficiency.
A left-hand high-precision high-speed ball nut is designed, including an oil storage bag, an oil outlet hole, an oil inlet hole and an extrusion mechanism. The lubricating oil in the oil storage bag is passed through the oil outlet hole and the extrusion mechanism through the spring force of the extrusion mechanism. The oil hole flows to the screw and the inner wall of the nut body, realizing the automatic addition of lubricating oil.
The lubricant addition process is simplified, time and effort are saved, and operators are avoided spending a lot of time on adding lubricant, and does not affect the working efficiency of the screw and nut body, maintaining the high-precision moving performance of the ball nut.
Smart Images
Figure CN222479360U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuts, in particular to a left-handed high-precision high-speed ball nut. Background Art
[0002] Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotational motion into linear motion, or to convert torque into axial repetitive force. It also has the characteristics of high precision, reversibility and high efficiency. Ball screw needs to be used in conjunction with ball nut. In order to reduce the friction between the ball screw and the nut, the ball needs to be set between the screw and the nut to form a combination of ball screw and ball nut.
[0003] Ball nuts are widely used due to their high precision, low friction and long life. However, during long-term use, the friction between the ball and the inner wall of the nut will cause wear and increase friction resistance, which in turn affects its high-precision movement performance. In order to maintain the high-precision movement performance of the ball nut, the traditional practice is to add lubricating oil to the nut before each use or regularly. This step requires operators to spend a lot of time applying and waiting for the lubricating oil to be evenly distributed, which is not only time-consuming and labor-intensive, but also affects their work efficiency. Utility Model Content
[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a left-handed high-precision high-speed ball nut, which can effectively solve the problem of inconvenient operation when adding lubricating oil to the ball nut in the prior art, resulting in time-consuming and labor-intensive operation and reduced work efficiency.
[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0006] The utility model provides a left-handed high-precision high-speed ball nut, comprising a ball nut body, and a screw threadedly connected in the ball nut body, a mounting cavity is provided inside one end of the nut body, an oil storage bag is rotatably installed inside the mounting cavity, a plurality of oil outlet holes are provided inside the oil storage bag, oil inlet holes adapted to the oil outlet holes are respectively provided on the inner wall of the nut body, and an extrusion mechanism is provided on the outer side of one end of the nut body close to the mounting cavity;
[0007] The extrusion mechanism includes an extrusion groove opened on the outside of the nut body, the extrusion groove is connected to the installation cavity, an extrusion ring is slidably installed inside the extrusion groove, a fixing ring is fixedly installed on the end of the extrusion ring away from the nut body, a spring is sleeved on the outside of the extrusion ring, one end of the spring is fixedly connected to the fixing ring, and the other end of the spring is fixedly connected to the outer wall of the nut body.
[0008] According to the above-mentioned left-handed high-precision high-speed ball nut, the inner diameter of the fixing ring is the same as the inner diameter of the nut body, and the outer diameter of the fixing ring is larger than the outer diameter of the nut body.
[0009] According to the above-mentioned left-handed high-precision high-speed ball nut, rotating shafts are symmetrically mounted on the outer sides of the nut body, a support column is fixedly mounted on the outer side of the rotating shaft, and a support plate is fixedly mounted on the end of the support column away from the rotating shaft.
[0010] According to the above-mentioned left-handed high-precision high-speed ball nut, an anti-skid pad is fixedly installed on the side of the support plate away from the support column, and the anti-skid pad is made of silicone material.
[0011] According to the above-mentioned left-handed high-precision high-speed ball nut, the top of the oil storage bag is fixedly installed with an oil filling pipe connected thereto, a one-way valve is fixedly installed on the inner wall of the oil filling pipe, and the top of the oil filling pipe is threadedly connected with a sealing cover.
[0012] According to the above-mentioned left-handed high-precision high-speed ball nut, an adjustment groove is opened on the outer side of the nut body, the adjustment groove is connected with the installation cavity, and the oil filling pipe movably passes through the adjustment groove.
[0013] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:
[0014] When the utility model needs to add lubricating oil, the oil storage bag is first rotated by turning the oil filling pipe to make the oil outlet hole correspond to the oil inlet hole, and then the extrusion ring is released by rotating the rotating shaft and the supporting column. Under the action of the spring force, the extrusion ring slides in the extrusion slide groove and presses toward the oil storage bag, so that the lubricating oil in the oil storage bag flows to the screw rod through the oil outlet hole and the oil inlet hole, and then flows to the inner wall of the nut body through the rotation between the screw rod and the nut body, thereby making the addition of lubricating oil simple and convenient, without the operator spending a lot of time, saving time and labor, and not affecting the working efficiency of the screw rod and the nut body. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] 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 prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the nut body of the utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the oil storage bag and the oil filling pipe of the utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the extrusion ring, the fixing ring and the spring of the utility model;
[0020] Figure 5 It is a structural schematic diagram of the rotating shaft, supporting column and supporting plate of the utility model.
[0021] Figure numerals: 1. screw rod; 2. nut body; 3. installation cavity; 4. oil storage bag; 5. oil outlet hole; 6. oil inlet hole; 7. extrusion slide groove; 8. extrusion ring; 9. fixing ring; 10. spring; 11. rotating shaft; 12. support column; 13. support plate; 14. anti-slip pad; 15. adjustment groove; 16. oil filling pipe; 17. sealing cover. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The utility model is further described below in conjunction with embodiments.
[0024] Example: Refer to Figures 1 to 5A left-handed high-precision high-speed ball nut comprises a ball nut body 2 and a screw rod 1 threadedly connected in the ball nut body 2. An installation cavity 3 is provided inside one end of the nut body 2, and an oil storage bag 4 is rotatably installed inside the installation cavity 3. An oil filling pipe 16 connected to the oil storage bag 4 is fixedly installed at the top of the oil storage bag 4, and a one-way valve (not shown in the figure) is fixedly installed on the inner wall of the oil filling pipe 16. A sealing cover 17 is threadedly connected to the top of the oil filling pipe 16. An adjusting groove 15 is provided on the outer side of the nut body 2, and the adjusting groove 15 is connected to the installation cavity 3. The oil filling pipe 16 movably passes through the adjusting groove 15. A plurality of oil outlet holes 5 are provided on the inner side of the oil storage bag 4, and oil inlet holes 6 matched with each oil outlet hole 5 are respectively provided on the inner wall of the nut body 2. An extrusion mechanism is provided on the outer side of one end of the nut body 2 close to the installation cavity 3; when no lubricating oil is needed, the oil outlet on the oil storage bag 4 The hole 5 is misaligned with the oil inlet hole 6 on the nut body 2. At this time, the oil filling pipe 16 is also placed on the inner wall of one side of the adjusting groove 15. When lubricating oil needs to be added, the oil filling pipe 16 is slid from one side of the adjusting groove 15 to the other side so that the oil outlet hole 5 corresponds to the oil inlet hole 6, and then the oil storage bag 4 is squeezed by the squeezing mechanism, so that the lubricating oil in the oil storage bag 4 flows to the screw rod 1 through the oil outlet hole 5 and the oil inlet hole 6, and then flows to the inner wall of the nut body 2 through the rotation between the screw rod 1 and the nut body 2, thereby making the addition of lubricating oil simple and convenient, without the operator spending a lot of time, saving time and effort, and not affecting the working efficiency of the screw rod 1 and the nut body 2. When the lubricating oil in the oil storage bag 4 is exhausted, the sealing cover 17 is rotated to remove, and lubricating oil is added to the oil storage bag 4 through the oil filling pipe 16. The one-way valve prevents the lubricating oil from flowing to the oil filling pipe 16 when the oil storage bag 4 is squeezed.
[0025] Specifically, the extrusion mechanism includes an extrusion chute 7 provided on the outside of the nut body 2, the extrusion chute 7 is connected with the mounting cavity 3, an extrusion ring 8 is slidably mounted inside the extrusion chute 7, a fixing ring 9 is fixedly mounted on one end of the extrusion ring 8 away from the nut body 2, a spring 10 is sleeved on the outside of the extrusion ring 8, one end of the spring 10 is fixedly connected to the fixing ring 9, and the other end of the spring 10 is fixedly connected to the outer wall of the nut body 2, a rotating shaft 11 is symmetrically mounted on both ends of the outside of the nut body 2, a support column 12 is fixedly mounted on the outside of the rotating shaft 11, a support plate 13 is fixedly mounted on one end of the support column 12 away from the rotating shaft 11, an anti-skid pad 14 is fixedly mounted on the side of the support plate 13 away from the support column 12, and the anti-skid pad 14 It is made of silicone; when there is no need to add lubricating oil, the support plate 13 fits with the fixing ring 9, so that the support column 12 and the support plate 13 limit the fixing ring 9 and the extrusion ring 8 to prevent them from being squeezed into the oil storage bag 4 under the action of the elastic force of the spring 10, and the anti-skid pad 14 made of silicone increases the friction between the support plate 13 and the fixing ring 9, so that the support column 12 and the support plate 13 support the fixing ring 9 more stably. When lubricating oil needs to be added, the rotating shaft 11 and the support column 12 are rotated so that the support plate 13 and the fixing ring 9 are no longer fitted. At this time, the extrusion ring 8 slides in the extrusion groove 7 under the action of the elastic force of the spring 10 and squeezes the oil storage bag 4, thereby squeezing the lubricating oil in the oil storage bag 4 through the oil outlet 5.
[0026] The working principle of the utility model is as follows:
[0027] When there is no need to add lubricating oil, the oil outlet hole 5 on the oil storage bag 4 is misaligned with the oil inlet hole 6 on the nut body 2. At this time, the oil filling pipe 16 is also placed on the inner wall of one side of the adjusting groove 15. When lubricating oil needs to be added, the oil filling pipe 16 is slid from one side of the adjusting groove 15 to the other side so that the oil outlet hole 5 corresponds to the oil inlet hole 6, and then the rotating shaft 11 and the supporting column 12 are rotated so that the supporting plate 13 and the fixing ring 9 are no longer fitted. The extrusion ring 8 that has lost its support limit slides in the extrusion slide groove 7 under the action of the elastic force of the spring 10 and squeezes the oil storage bag 4, so that the lubricating oil in the oil storage bag 4 flows to the screw rod 1 through the oil outlet hole 5 and the oil inlet hole 6, and then flows to the inner wall of the nut body 2 through the rotation between the screw rod 1 and the nut body 2, thereby making the addition of lubricating oil simple and convenient, without the operator spending a lot of time, saving time and effort, and not affecting the working efficiency of the screw rod 1 and the nut body 2.
[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.
Claims
1. A left-handed high-precision high-speed ball nut, comprising a ball nut body (2), characterized in that: It also comprises a screw rod (1) threadedly connected in a ball nut body (2); a mounting cavity (3) is provided inside one end of the nut body (2); an oil storage bag (4) is rotatably installed inside the mounting cavity (3); a plurality of oil outlet holes (5) are provided inside the oil storage bag (4); oil inlet holes (6) matched with the oil outlet holes (5) are respectively provided on the inner wall of the nut body (2); and an extrusion mechanism is provided on the outer side of one end of the nut body (2) close to the mounting cavity (3); The extrusion mechanism comprises an extrusion groove (7) provided on the outside of the nut body (2), the extrusion groove (7) being connected to the mounting cavity (3), an extrusion ring (8) being slidably mounted inside the extrusion groove (7), a fixing ring (9) being fixedly mounted on one end of the extrusion ring (8) away from the nut body (2), a spring (10) being sleeved on the outside of the extrusion ring (8), one end of the spring (10) being fixedly connected to the fixing ring (9), and the other end of the spring (10) being fixedly connected to the outer wall of the nut body (2).
2. A left-handed high-precision high-speed ball nut according to claim 1, characterized in that: The inner diameter of the fixing ring (9) is the same as the inner diameter of the nut body (2), and the outer diameter of the fixing ring (9) is greater than the outer diameter of the nut body (2).
3. A left-handed high-precision high-speed ball nut according to claim 1, characterized in that: A rotating shaft (11) is symmetrically rotatably mounted on both ends of the outer side of the nut body (2), a supporting column (12) is fixedly mounted on the outer side of the rotating shaft (11), and a supporting plate (13) is fixedly mounted on one end of the supporting column (12) away from the rotating shaft (11).
4. A left-handed high-precision high-speed ball nut according to claim 3, characterized in that: An anti-skid pad (14) is fixedly mounted on one side of the support plate (13) away from the support column (12), and the anti-skid pad (14) is made of silica gel.
5. The left-handed high-precision high-speed ball nut according to claim 1, characterized in that: The top end of the oil storage bag (4) is fixedly provided with an oil filling pipe (16) connected thereto, a one-way valve is fixedly provided on the inner wall of the oil filling pipe (16), and the top end of the oil filling pipe (16) is threadedly connected with a sealing cap (17).
6. A left-handed high-precision high-speed ball nut according to claim 5, characterized in that: An adjustment groove (15) is provided on the outer side of the nut body (2), the adjustment groove (15) is communicated with the mounting cavity (3), and the oil injection pipe (16) movably passes through the adjustment groove (15).