Ball screw bearing assembly

Abstract

The embodiment of the invention provides a ball screw bearing assembly, and relates to the technical field of ball screws. A ball screw bearing assembly comprises a lead screw used for rotating and a bearing assembly connected with one end of the lead screw in a sleeving mode, the bearing assembly comprises a supporting seat used for supporting, a bearing hole is formed in one side of the surface of the supporting seat in a penetrating mode, and then a bearing inner ring is coaxially installed in the bearing hole; meanwhile, a lifting groove is upwards formed in the surface of the inner ring wall at the penetrating position of the bearing inner ring, a clamping block capable of moving in a lifting mode is further arranged in the lifting groove, the installed lead screw can be fastened through the clamping block, and when the lead screw is disassembled, a rotating head is rotated, so that the clamping block moves upwards to release the lead screw, and disassembling is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of ball screws, and in particular relates to a ball screw bearing assembly. Background Art

[0002] Ball screw is an ideal product for converting rotary motion into linear motion, or converting linear motion into rotary motion. Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or to convert torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency. Due to its small friction resistance, ball screw is widely used in various industrial equipment and precision instruments. Ball screw consists of screw, nut, steel ball, preload plate, reverser and dust collector.

[0003] As a precision transmission element, ball screw plays a vital role in automation equipment. It is usually installed on the equipment through bearings. Specifically, the equipment will be designed with a bearing hole specially for installing the bearing, and one end of the ball screw will be tightly inserted into the inner ring of the ball bearing, thereby achieving a reliable connection between the ball screw and the equipment. Although this installation method can ensure the stability of the ball screw during operation, it also has some shortcomings.

[0004] When the bearing on the ball screw reaches the end of its service life and needs to be replaced, the operator often needs to knock the inner ring of the old bearing out of the ball screw. This knocking operation is not only laborious, but also during the knocking process, there will be severe friction between the inner ring and the surface of the ball screw, resulting in scratches or damage on the surface of the ball screw. As time goes by, since the bearing has a certain service life and needs to be replaced regularly, the frequent disassembly and assembly of the ball screw and the bearing will gradually increase the surface wear of the ball screw, affecting its accuracy and life. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems of wear and tear between the bearing inner ring and the lead screw in the prior art. To this end, the present application proposes a ball screw bearing assembly.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the present invention is as follows: a ball screw bearing assembly, comprising a screw for rotation, and a bearing assembly sleeved on one end of the screw, the bearing assembly comprising a support seat for support, a bearing hole is penetrated on one side of the surface of the support seat, and then a bearing inner ring is coaxially installed inside the bearing hole, and a lifting groove is upwardly opened on the surface of the inner ring wall at the point where the bearing inner ring penetrates, and a clamping block that can be lifted and displaced is also arranged inside the lifting groove, and the installed screw can be fastened by the clamping block.

[0007] Preferably, a threaded rod extends upward from the top of the clamping block, and a rotating wheel is coaxially sleeved on the outer circumference of the threaded rod, and a threaded hole extending downward from the top of the rotating wheel is threadedly connected to the threaded rod.

[0008] Preferably, a gear three is fixed below the rotating wheel, and a crown gear two is meshedly connected on one side of the gear three, while a gear ring is fixedly connected on the other side of the crown gear two, and a gear two is meshedly connected above the gear ring, and a rotating head is extended from one side of the outer surface of the gear two toward the inner ring surface of the bearing.

[0009] Preferably, a displaceable nut is sleeved on the outer circumferential surface of the lead screw, brackets are evenly distributed on both sides of the outer surface of the inner ring of the bearing, and rotatable gears and fan blades are respectively connected to both sides of the outer surface of the brackets.

[0010] Preferably, the coaxial surfaces of the gear 1 and the fan blade are also provided with magnetic blocks, and crown gears 1 are fixed on both sides of the outer surface of the bearing outer ring, and the gear 1 is meshed and connected with the crown gear 1.

[0011] Preferably, a pressure box is fixedly connected to the top of the support seat, and a U-shaped pressure hole is opened inward on the surface close to the nut. A piston rod capable of telescopic displacement is also provided inside the pressure hole, and a spring is sleeved on the outer peripheral surface of the piston rod.

[0012] Preferably, a bottom groove is opened upward on one side of the bottom surface of the pressurizing box, and an air duct extends from the bottom surface of the bottom groove toward the pressurizing hole.

[0013] Preferably, an exhaust plate is provided at the opening of the bottom groove, and holes for exhaust are provided through the surface of the exhaust plate.

[0014] Preferably, a movable plate is fixed to the other end of the piston rod, and the movable plate is arranged in a semicircular arc structure.

[0015] Preferably, one end of the lead screw is connected to a motor, and the motor and the lead screw are connected via a coupling, and a bearing is provided on the other side of the outer circumference of the lead screw.

[0016] A ball screw bearing assembly of the present invention has the following advantages:

[0017] 1. A ball screw bearing assembly, when the screw is tightly connected to the inner ring of the bearing, the rotating head is rotated by a tool, and its rotation drives the gear ring through gear two, and then drives gear three through crown gear two. The rotation of gear three drives the threaded rod to move up and down through the threaded connection, so that the clamping block in the inner ring of the bearing is actuated to clamp the screw; and when the screw is to be removed, the rotating head is rotated in the opposite direction to move the clamping block upward to release the screw, thereby facilitating disassembly.

[0018] 2. In this ball screw bearing assembly, when the screw is rotated by the motor, the inner ring of the bearing connected to one end of the screw also rotates. Since the brackets are fixedly connected to the outer surface of the inner ring of the bearing on both sides, the brackets will rotate with the inner ring of the bearing. The gear set on one side of the bracket rotates accordingly, and the fan blades rotate through the magnetic attraction of the magnetic block. The airflow generated by the rotation of the fan blades blows to the surface of the inner ring of the bearing, achieving a heat dissipation effect.

[0019] 3. In a ball screw bearing assembly, when the screw rotates, the nut located on the outer circumference of the screw approaches the moving plate, and the moving plate is displaced to one side under the displacement and extrusion of the nut. The moving plate drives the piston rod to squeeze the space of the pressurized hole, causing the gas inside the pressurized hole to pass through the air duct and be discharged from the exhaust plate. The airflow discharged from the exhaust plate flows downward and forms an airflow on one side of the bearing assembly, which can block the debris generated by the screw during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the bearing assembly and the lead screw of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a bearing assembly of the present invention;

[0024] Figure 4 It is a schematic diagram of the exploded structure of the bearing assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the pressurized box of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the pressurized box of the present invention from a top view;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure along the AA section of the present invention;

[0028] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0029] Fig. 9 It is a schematic diagram of the gear ring structure of the present invention;

[0030] Fig.10 It is a bottom view of the structure of the pressurized box of the present invention;

[0031] Fig.11 It is a partial perspective structural schematic diagram of the pressurized box of the present invention.

[0032] Explanation of the marks in the figure: 1. Motor; 11. Screw; 12. Nut; 13. Bearing; 2. Bearing assembly; 21. Support seat; 22. Bearing hole; 23. Bearing inner ring; 231. Bearing outer ring; 232. Ball; 233. Bracket; 234. Crown gear one; 235. Lifting slot; 3. Pressurizing box; 31. Moving plate; 32. Pressurizing hole; 33. Bottom slot; 34. Exhaust plate; 35. Air duct; 36. Piston rod; 361. Spring; 4. Gear one; 41. Fan blade; 42. Magnetic block; 5. Clamping block; 51. Threaded rod; 52. Rotating wheel; 53. Threaded hole; 54. Gear three; 6. Gear ring; 61. Crown gear two; 62. Gear two; 63. Rotating head. DETAILED DESCRIPTION

[0033] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0034] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0037] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0038] like Figure 1-Figure 2 As shown, a ball screw bearing assembly of the present invention includes a motor 1 for driving operation, and a screw 11 is fixedly connected to one side of the power output end of the motor 1, and the connection can be connected through a coupling, so when the motor 1 is running, the motor 1 can make the screw 11 rotate. A nut 12 capable of displacement is also sleeved on the outer circumference of the screw 11, so after the screw 11 rotates, the rotary motion can be converted into linear displacement, and then the nut 12 can be displaced. And bearing parts 13 and bearing assembly 2 are respectively arranged on both sides of the outer circumference of the screw 11.

[0039] like Figure 3-Figure 5 As shown, the bearing assembly 2 includes a support seat 21 for support, and a bearing hole 22 is penetrated on one side of the surface of the support seat 21, and then a bearing inner ring 23 is coaxially installed inside the bearing hole 22, and a bearing outer ring 231 is coaxially sleeved on the outer circumference of the bearing inner ring 23, and balls 232 are filled between the bearing outer ring 231 and the bearing inner ring 23, so when one end of the screw 11 needs to be connected to the bearing assembly 2, one end of the screw 11 can then pass through the bearing inner ring 23.

[0040] like Figure 6-Figure 9As shown, a lifting groove 235 is provided upwardly on the inner ring wall of the inner ring 23 of the bearing, and a clamping block 5 capable of lifting and displacing is provided inside the lifting groove 235. A threaded rod 51 extends upwardly from the top of the clamping block 5, and a rotating wheel 52 is coaxially sleeved on the outer circumference of the threaded rod 51, and a threaded hole 53 extending downwardly from the top of the rotating wheel 52 is threadedly connected to the threaded rod 51. A gear 3 54 is also fixed below the rotating wheel 52, and a crown gear 2 61 is meshedly connected to one side of the gear 3 54, and a gear ring 6 is fixedly connected to the other side of the crown gear 2 61. As the gear ring 6 rotates, the driving gear 3 54 can be meshed through the crown gear 2 61, and after the gear 3 54 rotates, it is threadedly connected to the threaded rod 51 through the threaded hole 53, so that the clamping block 5 can be telescopically displaced.

[0041] Gear 2 62 is meshed and connected above the gear ring 6, and a rotating head 63 is extended from one side of the outer surface of gear 2 62 toward the surface of the bearing inner ring 23. Therefore, when the bearing inner ring 23 is sleeved on one end of the lead screw 11, the rotating head 63 is inserted through a corresponding tool to rotate. After the rotating head 63 rotates, the gear ring 6 connected below can be driven through gear 2 62. As the gear ring 6 rotates, the gear 3 54 can be driven through the crown gear 2 61. After the gear 3 54 rotates, the threaded hole 53 connected with the thread can drive the threaded rod 51 downward, and then the clamping block 5 provided on the inner ring wall of the bearing inner ring 23 can clamp and tighten the lead screw 11. And when the lead screw 11 needs to be disassembled from the bearing assembly 2, after the rotating head 63 is rotated in the opposite direction, the clamping block 5 moves upward in the opposite direction, which can facilitate the removal of the lead screw 11.

[0042] like Figure 5-Figure 8 As shown, brackets 233 are evenly distributed on both sides of the outer surface of the bearing inner ring 23, and rotatable gears 14 and blades 41 are connected to both sides of the outer surface of the bracket 233, and magnets 42 are also provided on the coaxial surfaces of the gear 14 and the blades 41, respectively. The magnets 42 are attracted to each other, so that the gears 14 and the blades 41 can be driven synchronously. Crown gears 1 234 are fixed to both sides of the outer surface of the bearing outer ring 231, and the gears 14 and the blades 41 are meshed and connected. Therefore, when the lead screw 11 is rotated by the motor 1, the bearing inner ring 23 connected to one end of the lead screw 11 can be rotated. Since the brackets 233 are fixed to both sides of the outer surface of the bearing inner ring 23, the brackets 233 can rotate with the bearing inner ring 23, and the gears 14 provided on one side of the bracket 233 can be rotated, and then the blades 41 can be rotated by the magnetic attraction of the magnets 42. Then, the airflow generated by the rotation of the fan blades 41 can be blown toward the surface of the bearing inner ring 23, thereby achieving a certain heat dissipation effect thereon.

[0043] like Figure 10-11As shown, a pressurizing box 3 is fixedly connected to the top of the support seat 21, and a U-shaped pressurizing hole 32 is opened inwardly on the surface close to the nut 12. A piston rod 36 capable of telescopic displacement is also provided inside the pressurizing hole 32, and a spring 361 is sleeved on the outer peripheral surface of the piston rod 36.

[0044] A bottom groove 33 is provided upwardly on one side of the bottom surface of the pressurizing box 3, and an air duct 35 extends from the bottom surface of the bottom groove 33 in the direction of the pressurizing hole 32. An exhaust plate 34 is provided at the opening of the bottom groove 33, and holes for exhaust are provided on the surface of the exhaust plate 34. A movable plate 31 is fixed at the other end of the piston rod 36, and the movable plate 31 is provided in a semicircular arc structure. Therefore, when the lead screw 11 rotates, the nut 12 sleeved on the outer peripheral surface of the lead screw 11 approaches the movable plate 31, and the movable plate 31 can be displaced to one side under the displacement and extrusion of the nut 12. As the movable plate 31 drives the piston rod 36 to squeeze the space of the pressurizing hole 32, the gas inside the pressurizing hole 32 can pass through the air duct 35 and be discharged from the exhaust plate 34, and then the airflow discharged from the exhaust plate 34 can flow downward, so that a certain airflow is formed on one side of the bearing assembly 2, so that the debris generated by the lead screw 11 during processing can be blocked by the airflow.

[0045] A working principle of a ball screw bearing assembly: when the inner ring 23 of the bearing is sleeved on one end of the screw 11, the corresponding tool is inserted into the rotating head 63 to rotate it. After the rotating head 63 rotates, the gear ring 6 connected below can be driven through the gear 2 62. As the gear ring 6 rotates, the gear 3 54 can be driven through the crown gear 2 61. After the gear 3 54 rotates, the threaded hole 53 connected by the thread can drive the threaded rod 51 downward. Then, the clamping block 5 provided on the inner ring wall of the inner ring 23 of the bearing can clamp and tighten the screw 11. And when the screw 11 needs to be disassembled from the bearing assembly 2, after the rotating head 63 is rotated in the opposite direction, the clamping block 5 moves upward in the opposite direction, which can facilitate the removal of the screw 11;

[0046] As the lead screw 11 rotates through the motor 1, the bearing inner ring 23 connected to one end of the lead screw 11 can rotate. Since the outer surfaces of the bearing inner ring 23 are fixedly connected with brackets 233 on both sides, the brackets 233 can rotate together with the bearing inner ring 23, and the gear 4 set on one side of the bracket 233 can rotate, and then the fan blade 41 can rotate through the magnetic attraction of the magnetic block 42. Then, the airflow generated by the rotation of the fan blade 41 can blow to the surface of the bearing inner ring 23, which has a certain heat dissipation effect;

[0047] Finally, when the lead screw 11 rotates, the nut 12 sleeved on the outer circumference of the lead screw 11 approaches the movable plate 31, and the movable plate 31 is displaced to one side under the displacement and extrusion of the nut 12. As the movable plate 31 drives the piston rod 36 to squeeze the space of the pressurizing hole 32, the gas inside the pressurizing hole 32 can pass through the air duct 35 and be discharged from the exhaust plate 34, and then the airflow discharged from the exhaust plate 34 can flow downward, so that a certain airflow is formed on one side of the bearing assembly 2, so that the debris generated by the lead screw 11 during processing can be blocked by the airflow.

[0048] It should be noted that the specific model and specifications of the motor 1 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be repeated in detail.

[0049] The power supply and principle of the motor 1 are clear to those skilled in the art and will not be described in detail here.

[0050] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A ball screw bearing assembly, comprising a screw (11) for rotation, and a bearing assembly (2) sleeved on one end of the screw (11), Features: The bearing assembly (2) comprises a support seat (21) for supporting, a bearing hole (22) is penetrated through one side of the surface of the support seat (21), and then a bearing inner ring (23) is coaxially installed inside the bearing hole (22), and a lifting groove (235) is upwardly opened on the inner ring wall surface where the bearing inner ring (23) penetrates, and a clamping block (5) capable of lifting and displacing is also arranged inside the lifting groove (235), and the screw (11) can be fastened and installed through the clamping block (5).

2. The ball screw bearing assembly according to claim 1, Features: A threaded rod (51) extends upward from the top of the clamping block (5), and a rotating wheel (52) is coaxially sleeved on the outer circumference of the threaded rod (51), and a threaded hole (53) extending downward from the top of the rotating wheel (52) is threadedly connected to the threaded rod (51).

3. The ball screw bearing assembly according to claim 2, Features: A gear three (54) is fixed below the rotating wheel (52), and a crown gear two (61) is meshedly connected on one side of the gear three (54), and a gear ring (6) is fixedly connected on the other side of the crown gear two (61), and a gear two (62) is meshedly connected above the gear ring (6), and a rotating head (63) is extended from one side of the outer surface of the gear two (62) toward the surface of the bearing inner ring (23).

4. The ball screw bearing assembly according to claim 3, Features: The outer peripheral surface of the lead screw (11) is also sleeved with a nut (12) that can be displaced, and brackets (233) are evenly distributed on both sides of the outer surface of the bearing inner ring (23), and a rotatable gear (4) and a fan blade (41) are respectively connected to both sides of the outer surface of the bracket (233).

5. The ball screw bearing assembly according to claim 4, Features: Magnetic blocks (42) are also provided on the coaxial surfaces of the gear 1 (4) and the fan blade (41), and crown gears 1 (234) are fixed on both sides of the outer surface of the bearing outer ring (231), and the gear 1 (4) is meshed and connected with the crown gear 1 (234).

6. The ball screw bearing assembly according to claim 5, Features: A pressurizing box (3) is fixedly connected to the top of the support seat (21), and a U-shaped pressurizing hole (32) is opened inwardly on the surface close to the nut (12). A piston rod (36) capable of telescopic displacement is also arranged inside the pressurizing hole (32), and a spring (361) is sleeved on the outer peripheral surface of the piston rod (36).

7. The ball screw bearing assembly according to claim 6, Features: A bottom groove (33) is provided on one side of the bottom surface of the pressurizing box (3) and extends upward, and an air duct (35) is extended from the bottom surface of the bottom groove (33) in the direction of the pressurizing hole (32).

8. The ball screw bearing assembly according to claim 7, Features: An exhaust plate (34) is provided at the opening of the bottom groove (33), and holes for exhausting air are provided through the surface of the exhaust plate (34).

9. The ball screw bearing assembly according to claim 8, Features: A movable plate (31) is fixed to the other end of the piston rod (36), and the movable plate (31) is arranged in a semicircular arc structure.

10. The ball screw bearing assembly according to claim 1, Features: One end of the lead screw (11) is connected to a motor (1), and the motor (1) and the lead screw (11) are connected via a coupling, and a bearing member (13) is provided on the other side of the outer circumference of the lead screw (11).

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