Trapezoidal lead screw nut
By introducing a sliding component and spring plate into the trapezoidal lead screw nut, the problem of meshing clearance affecting accuracy and lifespan in the prior art is solved, achieving higher accuracy and service life.
Patent Information
- Application Number
- CN202422234508.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The existing trapezoidal screw nut and trapezoidal screw are only engaged by screw threads, resulting in a single motion state. The meshing clearance is determined by the machining process, which affects the accuracy and lifespan of the mechanism.
The design includes a first nut body and a second nut body. The second nut body is slidably connected to the connecting part through a sliding component. Combined with the elastic force of the spring plate, the relative movement between the nut and the lead screw is realized to eliminate backlash.
The cooperation of the sliding component and the spring plate eliminates the meshing gap between the nut and the lead screw, improving the accuracy and service life of the mechanism.
Smart Images
Figure CN223498588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lead screw accessories technology, and more specifically, to a trapezoidal lead screw nut. Background Technology
[0002] Trapezoidal lead screws are components that convert rotary motion into linear motion, or linear motion into rotary motion. They are mainly used in transmission and position adjustment devices and are widely used in the machinery industry. They have the advantages of simple and compact structure, easy processing, and self-locking capability.
[0003] Currently, trapezoidal lead screws are usually used with nuts. The inner surface of the nut is threaded to the outer surface of the trapezoidal lead screw. The nut and the trapezoidal lead screw together enable linear motion under certain load conditions. However, most existing trapezoidal lead screws only have thread engagement between the nut and the lead screw, resulting in a single motion state. The gap between the nut and the screw thread engagement during motion is entirely determined by the machining process and cannot be eliminated, thus affecting the accuracy and lifespan of the entire mechanism. Utility Model Content
[0004] 1. Technical problems to be solved
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a trapezoidal lead screw nut, which aims to solve the problem that most trapezoidal lead screw nuts in the prior art only engage with the trapezoidal lead screw through thread meshing, resulting in a single motion state. During motion, the gap between the nut and the lead screw thread meshing is entirely determined by the machining process and cannot be eliminated, thus affecting the accuracy and lifespan of the entire mechanism.
[0006] 2. Technical Solution
[0007] To solve the above problems, the present invention adopts the following technical solution:
[0008] A trapezoidal lead screw nut includes a first nut body and a second nut body. The second nut body is detachably connected to the first nut body. A connecting portion is provided on the circumferential surface of the first nut body, and the second nut body is inserted into the connecting portion. A spring plate is sleeved on the circumferential surface of the connecting portion, and the spring plate corresponds to the second nut body. A sliding assembly is provided between the second nut body and the connecting portion, and the sliding assembly allows the second nut body to be slidably connected to the connecting portion.
[0009] As a preferred embodiment of the present invention, the sliding component includes multiple positioning grooves and multiple set screws. The multiple positioning grooves are all formed on the circumferential surface of the connecting part, and the multiple set screws are all threaded to the second nut body. The ends of the multiple set screws that are close to each other pass through the second nut body and correspond to the multiple positioning grooves respectively.
[0010] As a preferred embodiment of this utility model, a flange is fixedly connected to the end of the first nut body away from the second nut body, and the flange has multiple connection holes.
[0011] In a preferred embodiment of this utility model, the inner surfaces of both the first nut body and the second nut body are threaded onto the trapezoidal lead screw.
[0012] 3. Beneficial effects
[0013] Compared with existing technologies, the advantages of this utility model are:
[0014] (1) In this solution, the first nut body and the second nut body are both threadedly connected to the trapezoidal screw. The second nut body is slidably connected to the connecting part through a sliding component. The second nut body and the first nut body compress the spring plate. The elastic force of the spring plate acts on the first nut body and the second nut body. The first nut body and the second nut body move relative to each other, thereby achieving the purpose of eliminating gaps on the trapezoidal screw. The trapezoidal screw nut is composed of the first nut body and the second nut body connected by a sliding component. It can meet the movement of the trapezoidal screw and has a good effect in eliminating the gap between the nut and the screw when used with the spring plate, ensuring the accuracy and service life of the nut. Attached Figure Description
[0015] Figure 1 This is the front view of the present invention;
[0016] Figure 2 This is a perspective view of the present utility model;
[0017] Figure 3 This is an exploded view of the present invention;
[0018] Figure 4 This is a cross-sectional view of the present invention.
[0019] Explanation of the labels in the diagram:
[0020] 1. First nut body; 2. Second nut body; 3. Connecting part; 4. Spring plate; 51. Positioning groove; 52. Set screw; 6. Flange; 7. Connecting hole. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Example:
[0025] Please see Figure 1-4 A trapezoidal lead screw nut includes a first nut body 1 and a second nut body 2. The second nut body 2 is detachably connected to the first nut body 1. A connecting part 3 is provided on the circumferential surface of the first nut body 1, and the second nut body 2 is inserted into the connecting part 3. A spring plate 4 is sleeved on the circumferential surface of the connecting part 3, and the spring plate 4 corresponds to the second nut body 2. A sliding component is provided between the second nut body 2 and the connecting part 3, and the sliding component allows the second nut body 2 to be slidably connected to the connecting part 3. The inner surfaces of both the first nut body 1 and the second nut body 2 are threaded onto the trapezoidal lead screw.
[0026] In this embodiment, the spring plate 4 is sleeved on the connecting part 3, and the second nut body 2 is slidably connected to the connecting part 3 through a sliding assembly. The second nut body 2 compresses the spring plate 4. When the trapezoidal screw nut is used in conjunction with the trapezoidal screw, the first nut body 1 and the second nut body 2 are threadedly connected to the trapezoidal screw. The elastic force of the spring plate 4 acts between the first nut body 1 and the second nut body 2. Through the relative movement between the first nut body 1 and the second nut body 2, the first nut body 1 and the second nut body 2 achieve the effect of eliminating gaps on the trapezoidal screw.
[0027] Specifically, the sliding assembly includes multiple positioning grooves 51 and multiple set screws 52. The multiple positioning grooves 51 are all opened on the circumferential surface of the connecting part 3, and the multiple set screws 52 are all threaded to the second nut body 2. The ends of the multiple set screws 52 that are close to each other pass through the second nut body 2 and correspond to the multiple positioning grooves 51 respectively.
[0028] In this embodiment, multiple set screws 52 are threaded onto the second nut body 2 and enter multiple positioning grooves 51 respectively, thereby enabling the second nut body 2 to slide with the first nut body 1 on the connecting part 3. The elastic force of the spring sheet 4 acts on the second nut body 2 and the first nut body 1, allowing the second nut body 2 and the first nut body 1 to slide slightly, thereby achieving the purpose of eliminating intermittent contact.
[0029] Specifically, a flange 6 is fixedly connected to the end of the first nut body 1 away from the second nut body 2, and multiple connection holes 7 are provided on the flange 6.
[0030] In this embodiment, the flange 6 and multiple connecting holes 7 facilitate the connection of other components when the first nut body 1 and the second nut body 2 are used on the trapezoidal lead screw.
[0031] Working principle: When the trapezoidal screw nut is used with the trapezoidal screw, the spring plate 4 is sleeved on the connecting part 3, and the first nut body 1 and the second nut body 2 are threadedly connected to the trapezoidal screw. The second nut body 2 is slidably connected to the connecting part 3 through multiple positioning grooves 51 and multiple set screws 52. The second nut body 2 and the first nut body 1 compress the spring plate 4, and the elastic force of the spring plate 4 acts between the first nut body 1 and the second nut body 2. Through the relative movement between the first nut body 1 and the second nut body 2, the first nut body 1 and the second nut body 2 achieve the effect of eliminating gaps on the trapezoidal screw.
[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.
Claims
1. A trapezoidal lead screw nut, comprising a first nut body (1) and a second nut body (2), characterized in that: The second nut body (2) is detachably connected to the first nut body (1). The circumferential surface of the first nut body (1) is provided with a connecting part (3), and the second nut body (2) is inserted into the connecting part (3). The circumferential surface of the connecting part (3) is sleeved with a spring plate (4), and the spring plate (4) corresponds to the second nut body (2). A sliding component is provided between the second nut body (2) and the connecting part (3), and the sliding component allows the second nut body (2) to slide on the connecting part (3).
2. The trapezoidal lead screw nut according to claim 1, characterized in that: The sliding assembly includes multiple positioning grooves (51) and multiple set screws (52). The multiple positioning grooves (51) are all opened on the circumferential surface of the connecting part (3). The multiple set screws (52) are all threaded onto the second nut body (2), and the ends of the multiple set screws (52) that are close to each other pass through the second nut body (2) and correspond to the multiple positioning grooves (51) respectively.
3. The trapezoidal lead screw nut according to claim 2, characterized in that: The first nut body (1) is fixedly connected to a flange (6) at one end away from the second nut body (2), and the flange (6) has multiple connection holes (7).
4. A trapezoidal lead screw nut according to claim 3, characterized in that: The inner surfaces of the first nut body (1) and the second nut body (2) are both threaded onto the trapezoidal lead screw.