High-speed mute ball screw

Abstract

The utility model discloses a high-speed mute ball screw, which relates to the technical field of screws and is characterized in that a screw main body unit is mounted at the upper end of a fixed plate; the lead screw body unit comprises a lead screw body and a high-speed bearing. The middle of the inner side of the fixing plate is rotationally connected with the left end of the outer side of the lead screw body through the high-speed bearing. The nut unit is installed on the lead screw main body unit and the fixing plate, the lead screw main body unit further comprises an oil liquid containing cavity, a spring and movable rods, the oil liquid containing cavity is formed in the eccentric position of the inner side of the lead screw main body, and the multiple movable rods are slidably connected into an outer side threaded groove, corresponding to the oil liquid containing cavity, of the lead screw main body; according to the high-speed mute ball screw, friction between the balls and the thread grooves can be reduced, so that the temperature of the ball screw nut can be quickly reduced.

Description

Technical Field

[0001] This utility model relates to the field of ball screw technology, specifically to a high-speed, quiet ball screw. Background Technology

[0002] Ball screw pairs are the most commonly used transmission components in machine tools and precision machinery. Their main function is to convert rotary motion into linear motion or torque into axial repetitive force, while also featuring high precision, reversibility and high efficiency.

[0003] The shortcomings of existing technologies include insufficient lubrication between the balls and the thread grooves in ball screw pairs, resulting in high vibration and noise during transmission. During use, the metal expands steadily and compresses the balls. After prolonged use, the balls and thread grooves wear severely, increasing noise. Therefore, we propose a high-speed, quiet ball screw. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a high-speed, quiet ball screw that can reduce the friction between the balls and the thread groove, so that the ball screw nut can be cooled down quickly, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-speed silent ball screw, comprising a fixed plate, a screw body unit, and a nut unit;

[0006] Fixed plate: The main body unit of the lead screw is installed at the upper end;

[0007] Lead screw main unit: includes lead screw body and high-speed bearing, the inner middle part of the fixed plate is rotatably connected to the outer left end of the lead screw body through the high-speed bearing;

[0008] Nut unit: mounted on the lead screw body unit and the fixing plate.

[0009] By using high-speed bearings to reduce friction between the lead screw body and the fixed plate, the lead screw body can rotate quickly, while reducing the noise generated by friction.

[0010] Furthermore, the lead screw body unit also includes an oil reservoir, a spring, and movable rods. An oil reservoir is located at an eccentric position on the inner side of the lead screw body. Multiple movable rods are slidably connected within the corresponding outer threaded grooves of the lead screw body and the oil reservoir. The lower end of each movable rod is fixedly connected to one end of a spring, and the other end of the spring is fixedly connected to the oil reservoir. Lubricating oil is stored in the oil reservoir. When the balls roll on the threaded grooves of the lead screw body, the balls compress the movable rods, causing the lubricating oil to flow out of the oil reservoir, thus achieving lubrication. Simultaneously, the spring resets the movable rods.

[0011] Furthermore, the lead screw body unit also includes an oil injection hole, a sealing bolt, and a threaded groove. An oil injection hole is provided at the right end of the oil reservoir, and a threaded groove is provided on the inner side of the oil injection hole. The oil injection hole is threadedly connected to the sealing bolt through the threaded groove. Lubricating oil is injected into the oil reservoir through the oil injection hole, and the sealing bolt and threaded groove seal the oil reservoir inside the lead screw body.

[0012] Furthermore, the nut unit includes a triangular limiting rod, a ball screw nut, and a triangular through hole. The triangular limiting rod is fixedly connected to the lower center of the left end of the fixing plate, and a triangular through hole is formed in the center of the right end of the ball screw nut. The outer side of the triangular limiting rod is slidably connected to the inner side of the triangular through hole. The triangular limiting rod and the triangular through hole limit the movement of the ball screw nut, allowing the inner side of the ball screw nut to move along the trajectory of the triangular limiting rod.

[0013] Furthermore, the nut unit also includes balls and a threaded cooling chamber. Balls are rolledly connected to the inner side of the ball screw nut, and the balls are rolledly connected to the screw body. A threaded cooling chamber is formed inside the ball screw nut, with both the inlet and outlet of the cooling chamber located at the lower end of the ball screw nut. The balls drive the ball screw nut to move, and by injecting coolant into the balls, the ball screw nut can be quickly cooled, thereby reducing friction between the balls and the threaded grooves.

[0014] Furthermore, it also includes fixing holes and a keyway. Four fixing holes are provided at the four corners of the left end of the fixing plate, and a keyway is provided at the outer left end of the lead screw body. The fixing holes limit the fixing plate, and the keyway facilitates the limiting and installation of the lead screw body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-speed silent ball screw has the following advantages:

[0016] 1. This high-speed silent ball screw stores lubricating oil in an oil reservoir. When the balls roll on the threaded groove of the screw body, the lubricating oil flows out from the oil reservoir when the balls press against the movable rod, thus achieving the purpose of lubrication. At the same time, the movable rod is reset by a spring.

[0017] 2. This high-speed silent ball screw moves the ball screw nut by means of the balls. By injecting coolant into the balls, the ball screw nut can be cooled down quickly, thereby reducing the friction between the balls and the thread groove. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2This is a schematic diagram of the lower structure of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 4 For this utility model Figure 3 A magnified view of the structure at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the structure on the right side of this utility model;

[0023] Figure 6 For this utility model Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0024] In the diagram: 1. Fixed plate, 2. Fixed hole, 3. Lead screw main unit, 31. Lead screw main body, 32. High-speed bearing, 33. Oil reservoir, 34. Oil injection hole, 35. Sealing bolt, 36. Threaded groove, 37. Spring, 38. Moving rod, 4. Nut unit, 41. Triangular limit rod, 42. Ball screw nut, 43. Ball, 44. Threaded cooling cavity, 45. Triangular through hole, 6. Keyway. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This embodiment provides a technical solution: a high-speed silent ball screw, including a fixed plate 1, a screw body unit 3, and a nut unit 4;

[0027] Fixed plate 1: The upper end is equipped with the main body unit 3 of the lead screw;

[0028] Lead screw body unit 3: includes lead screw body 31 and high-speed bearing 32. The inner middle part of the fixed plate 1 is rotatably connected to the outer left end of the lead screw body 31 through the high-speed bearing 32. The high-speed bearing 32 reduces the friction between the lead screw body 31 and the fixed plate 1, enabling the lead screw body 31 to rotate quickly, while reducing the noise generated by friction.

[0029] The lead screw body unit 3 also includes an oil reservoir 33, a spring 37, and movable rods 38. An oil reservoir 33 is located eccentrically on the inner side of the lead screw body 31. Multiple movable rods 38 are slidably connected to the outer threaded grooves of the lead screw body 31 and the oil reservoir 33, respectively. The lower end of each movable rod 38 is fixedly connected to one end of a spring 37, and the other end of the spring 37 is fixedly connected to the oil reservoir 33. Lubricating oil is stored in the oil reservoir 33. When the balls roll on the threaded grooves of the lead screw body 31, the balls compress the movable rods 38, causing the lubricating oil to flow out of the oil reservoir 33, thus achieving lubrication. Simultaneously, the spring 37 resets the movable rods 38.

[0030] The lead screw body unit 3 also includes an oil injection hole 34, a sealing bolt 35, and a threaded groove 36. An oil injection hole 34 is provided at the right end of the oil receiving cavity 33, and a threaded groove 36 is provided on the inner side of the oil injection hole 34. The oil injection hole 34 is threadedly connected to the sealing bolt 35 through the threaded groove 36. Lubricating oil is injected into the oil receiving cavity 33 through the oil injection hole 34, and the sealing bolt 35 and the threaded groove 36 seal the oil receiving cavity 33 inside the lead screw body 31.

[0031] Nut unit 4: Installed on the main screw unit 3 and the fixing plate 1, nut unit 4 includes a triangular limiting rod 41, a ball screw nut 42, and a triangular through hole 45. The triangular limiting rod 41 is fixedly connected to the lower center of the left end of the fixing plate 1, and the triangular through hole 45 is opened in the middle of the right end of the ball screw nut 42. The outer side of the triangular limiting rod 41 is slidably connected to the inner side of the triangular through hole 45. The triangular limiting rod 41 and the triangular through hole 45 limit the movement of the ball screw nut 42, allowing the inner side of the ball screw nut 42 to move along the trajectory of the triangular limiting rod 41.

[0032] The nut unit 4 also includes balls 43 and a threaded cooling cavity 44. The balls 43 are rolledly connected to the inner side of the ball screw nut 42, and the balls 43 are rolledly connected to the screw body 31. A threaded cooling cavity 44 is formed inside the ball screw nut 42, with both the inlet and outlet of the cooling cavity 44 located at the lower end of the ball screw nut 42. The balls 43 drive the ball screw nut 42 to move. Injecting coolant into the balls 43 allows the ball screw nut 42 to cool down quickly, thereby reducing friction between the balls and the threaded grooves.

[0033] It also includes fixing holes 2 and keyways 6. Four fixing holes 2 are provided at the four corners of the left end of the fixing plate 1, and a keyway 6 is provided at the outer left end of the lead screw body 31. The fixing holes 2 limit the fixing plate 1, and the keyway 6 facilitates the limiting and installation of the lead screw body 31.

[0034] The working principle of the high-speed silent ball screw provided by this utility model is as follows: The friction between the screw body 31 and the fixed plate 1 is reduced by the high-speed bearing 32, allowing the screw body 31 to rotate quickly while reducing noise generated by friction. Lubricating oil is stored in the oil reservoir 33. When the balls roll on the threaded groove of the screw body 31, the lubricating oil flows out of the oil reservoir 33 when the balls press against the movable rod 38, thus achieving lubrication. Simultaneously, the movable rod 38 is reset by the spring 37. Lubricating oil is injected into the oil reservoir 33 through the oil injection hole 34, and the oil reservoir 33 inside the screw body 31 is sealed by the sealing bolt 35 and the threaded groove 36. The ball screw nut 42 is limited by the triangular limiting rod 41 and the triangular through hole 45, allowing the inner side of the ball screw nut 42 to move along the trajectory of the triangular limiting rod 41. The ball bearings 43 drive the ball screw nut 42 to move. By injecting coolant into the ball bearings 43, the ball screw nut 42 can be cooled down quickly, thereby reducing the friction between the ball bearings and the thread groove. The fixing plate 1 is limited by the fixing hole 2, and the keyway 6 facilitates the limiting and installation of the screw body 31.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-speed, quiet ball screw, characterized in that: It includes a fixed plate (1), a lead screw main unit (3), and a nut unit (4); Fixed plate (1): The upper end is equipped with the main body unit (3) of the lead screw; Lead screw main body unit (3): includes lead screw body (31) and high-speed bearing (32), the inner middle part of the fixed plate (1) is rotatably connected to the outer left end of the lead screw body (31) through the high-speed bearing (32); Nut unit (4): Installed on the lead screw main body unit (3) and the fixing plate (1).

2. The high-speed silent ball screw according to claim 1, characterized in that: The lead screw main body unit (3) also includes an oil receiving cavity (33), a spring (37) and a movable rod (38). An oil receiving cavity (33) is provided at an eccentric position on the inner side of the lead screw main body (31). Multiple movable rods (38) are slidably connected in the outer threaded groove corresponding to the oil receiving cavity (33) of the lead screw main body (31). The lower end of the movable rod (38) is fixedly connected to one end of the spring (37), and the other end of the spring (37) is fixedly connected to the oil receiving cavity (33).

3. The high-speed silent ball screw according to claim 2, characterized in that: The lead screw main unit (3) also includes an oil injection hole (34), a sealing bolt (35) and a threaded groove (36). An oil injection hole (34) is provided at the right end of the oil receiving cavity (33). A threaded groove (36) is provided on the inner side of the oil injection hole (34). The oil injection hole (34) is threadedly connected to the sealing bolt (35) through the threaded groove (36).

4. The high-speed silent ball screw according to claim 1, characterized in that: The nut unit (4) includes a triangular limiting rod (41), a ball screw nut (42) and a triangular through hole (45). The triangular limiting rod (41) is fixedly connected to the lower middle part of the left end of the fixing plate (1). The triangular through hole (45) is opened in the middle part of the right end of the ball screw nut (42). The outer side of the triangular limiting rod (41) is slidably connected to the inner side of the triangular through hole (45).

5. The high-speed silent ball screw according to claim 4, characterized in that: The nut unit (4) also includes a ball (43) and a threaded cooling cavity (44). The ball screw nut (42) is rolled with a ball (43) inside. The ball (43) is rolled with the screw body (31). The ball screw nut (42) is provided with a threaded cooling cavity (44) inside. The inlet and outlet of the threaded cooling cavity (44) are both located at the lower end of the ball screw nut (42).

6. The high-speed silent ball screw according to claim 1, characterized in that: It also includes fixing holes (2) and keyways (6). The four corners of the left end of the fixing plate (1) are provided with four fixing holes (2), and the left side of the lead screw body (31) is provided with a keyway (6).

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