Low-noise nut and trapezoidal lead screw

Abstract

The low-noise nut comprises a nut body, an inner threaded hole is formed in the nut body, annular grooves are formed in the left end and the right end of the nut body, and sound absorption materials are filled in the annular grooves. The trapezoidal lead screw comprises a low-noise nut and a lead screw, and the lead screw is in threaded connection with the low-noise nut. The nut is simple in structure and reasonable in design, and the purpose of noise reduction can be achieved by improving the structure of the nut.

Description

Technical Field

[0001] The utility model belongs to the technical field of screws, in particular to a low-noise nut and a trapezoidal screw. Background Art

[0002] The lead screw is mainly composed of a lead screw and a nut. It is a commonly used transmission element, mainly used to convert rotational motion into linear motion, or convert linear motion into rotational motion.

[0003] At present, in order to reduce the noise of the trapezoidal screw, the method of optimizing the structure to reduce the eccentricity error is usually adopted. At the same time, in terms of material selection, the use of high-quality materials to improve the rigidity and vibration resistance of the trapezoidal screw is also an effective way to reduce noise. In addition, by optimizing the manufacturing process, such as strictly controlling the processing error to improve the quality and performance of the trapezoidal screw, the noise can also be reduced.

[0004] However, the above method has the disadvantages of long research and development time, high cost and great processing difficulty.

[0005] Therefore, how to solve the defects of the above-mentioned prior art has become the direction of efforts of technicians in this field. Utility Model Content

[0006] The purpose of the utility model is to provide a low-noise nut and a trapezoidal lead screw, which can completely solve the deficiencies of the above-mentioned prior art.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] A low-noise nut comprises a nut body, wherein the nut body is provided with an internal threaded hole, and annular grooves are formed at left and right ends of the nut body, and sound-absorbing materials are filled in the annular grooves.

[0009] Preferably, a groove is provided on the surface of the nut body, and a vibration damping ring is installed in the groove.

[0010] Preferably, a grease injection hole connected to the internal threaded hole is provided on the nut body, and the grease injection hole includes a vertical section and an inclined section. The vertical section is a blind hole extending downward from the surface of the nut body perpendicular to the axis direction of the nut body. One end of the inclined section is connected to the vertical section, and the other end is connected to the internal threaded hole.

[0011] Preferably, a labyrinth lubrication channel is provided on the inner wall of the nut body relative to the outlet of the inclined section.

[0012] A trapezoidal lead screw comprises the low-noise nut and the lead screw as described in any one of the above items, wherein the lead screw is threadedly connected to the low-noise nut.

[0013] Compared with the prior art, the utility model has the beneficial effects of simple structure, reasonable design, and the purpose of noise reduction can be achieved by improving the structure of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0016] Figure 3 It is a front view of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0019] like Figures 1 to 4 As shown, a low-noise nut includes a nut body 1, an internal thread hole is provided on the nut body 1, the thread of the internal thread hole is a trapezoidal thread, an annular groove 2 is provided at the left and right ends of the nut body 1, and a sound-absorbing material 3 is filled in the annular groove 2. This structural design can block the noise generated when the trapezoidal thread is engaged.

[0020] In a preferred solution of this embodiment, two grooves are provided on the surface of the nut body 1, and vibration-damping rings 4 are installed in the grooves. When the trapezoidal lead screw is loaded, it can play a vibration-damping role, thereby reducing noise.

[0021] A preferred solution of this embodiment is that a grease injection hole 5 connected to the internal threaded hole is provided on the nut body 1, and the grease injection hole 5 includes a vertical section 51 and an inclined section 52. The vertical section 51 is a blind hole extending downward from the surface of the nut body 1 perpendicular to the axial direction of the nut body, and one end of the inclined section 52 is connected to the vertical section 51, and the other end is connected to the internal threaded hole.

[0022] A labyrinth lubrication channel 53 is provided on the inner wall of the nut body 1 at a position relative to the outlet of the inclined section 52 .

[0023] This structural design effectively increases the cross-sectional area of ​​the grease when it is injected near the trapezoidal thread, thereby ensuring the lubrication effect of the meshing tooth surface of the trapezoidal thread.

[0024] A trapezoidal lead screw comprises the low-noise nut described in any one of the above items and a lead screw 6, wherein the lead screw 6 is threadedly connected to the low-noise nut.

[0025] The utility model comprehensively considers the optimization of structural shape and lubrication conditions, and couples multiple factors to achieve better vibration reduction and noise reduction effects.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-noise nut, comprising a nut body, the nut body being provided with an internal threaded hole, characterized in that: Annular grooves are provided at the left and right ends of the nut body, and sound absorbing materials are filled in the annular grooves. A clamping groove is provided on the surface of the nut body, and a vibration-damping ring is installed in the clamping groove.

2. The low-noise nut according to claim 1, characterized in that: The nut body is provided with a grease injection hole connected to the internal threaded hole. The grease injection hole includes a vertical section and an inclined section. The vertical section is a blind hole extending downward from the surface of the nut body perpendicular to the axis direction of the nut body. One end of the inclined section is connected to the vertical section, and the other end is connected to the internal threaded hole.

3. The low noise nut according to claim 2, characterized in that: A labyrinth lubrication channel is arranged on the inner wall of the nut body at a position relative to the outlet of the inclined section.

4. A trapezoidal lead screw, characterized in that: It comprises the low-noise nut and the lead screw as described in any one of claims 1 to 3, wherein the lead screw is threadedly connected to the low-noise nut.

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