Shock-resistant and wear-resistant lead screw

Abstract

The utility model belongs to the technical field of transmission parts, and particularly relates to a shock-resistant and wear-resistant lead screw which comprises a lead screw body, and a threaded groove is formed in the surface of the lead screw body. The nut is arranged on the lead screw body and is in transmission connection with the lead screw, a through hole is formed in the nut, and a plurality of ball grooves are formed in the inner wall of the through hole; the anti-seismic part always shows the relative movement trend opposite to the vibration acceleration direction of the lead screw main body under the action of inertia; the wear-resistant part is arranged on the surface of the lead screw main body; wherein the anti-vibration part is arranged in the lead screw body, the balls are rotationally arranged in the ball grooves, and compared with the prior art, the precision and stability of the lead screw can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission parts, and in particular relates to a shock-resistant and wear-resistant lead screw. Background Art

[0002] A ball screw is a product that converts rotary motion into linear motion, or linear motion into rotary motion. It 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 torque into axial repetitive force. It has the characteristics of high precision, reversibility and high efficiency. Due to its small friction resistance, ball screws are widely used in various industrial equipment and precision instruments. For example, a linear track ball screw disclosed in patent application number CN202320845982.9 includes a ball screw and lubrication mechanism; the screw: its outer arc surface is evenly provided with external thread grooves, the outer arc surface movable sleeve of the screw is provided with a nut, the inner wall surface of the nut is evenly provided with internal thread grooves, the interior of the nut is provided with a circulation channel, the circulation channel is connected to the internal thread groove, the interior of the whole composed of the external thread groove, the internal thread groove and the circulation channel is evenly filled with balls, the threaded holes on the outer arc surface of the nut are threadedly connected to circulators, the interior of the circulators is provided with guide grooves connected to the circulation channels, and a connecting flange is provided at the left end of the nut; the lubrication mechanism: it is provided on the outer arc surface of the nut;

[0003] During use, this existing screw lacks effective vibration reduction and shock resistance measures, which makes the accuracy and stability of the screw easily affected. At the same time, the wear resistance of the screw is low and it is prone to wear, which further reduces the accuracy and stability of the screw. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a shock-resistant and wear-resistant lead screw to improve the accuracy and stability of the lead screw in response to the above-mentioned technical problems.

[0005] In view of this, the present invention provides a shock-resistant and wear-resistant lead screw, comprising:

[0006] A screw body, wherein a thread groove is provided on the surface of the screw body;

[0007] A nut, which is arranged on the lead screw body and is in transmission connection with the lead screw, wherein a through hole is provided in the nut, and a plurality of ball grooves are provided on the inner wall of the through hole;

[0008] Also includes:

[0009] An anti-vibration portion, which, under the action of inertia, always exhibits a relative movement trend opposite to the vibration acceleration direction of the screw body;

[0010] A wear-resistant portion, the wear-resistant portion being provided on a surface of the lead screw body;

[0011] The anti-vibration part is arranged in the screw body, and balls are rotatably arranged in the ball groove.

[0012] In the present technical solution, during the use of the screw, the rotation of the screw body drives the nut to move linearly along the screw body. When the screw is subjected to impact vibration, the anti-vibration part is set, and the anti-vibration part always shows a relative movement trend opposite to the vibration acceleration direction of the screw body under the action of inertia, thereby effectively reducing the vibration amplitude, balancing the screw vibration, and reducing the impact of vibration on the screw body. At the same time, the setting of the wear-resistant part can effectively improve the wear resistance of the screw body, reduce the wear of the screw, and thus ensure the accuracy and stability of the screw body. Compared with the existing technology, the utility model can effectively improve the accuracy and stability of the screw.

[0013] In the above technical solution, further comprising:

[0014] a lubricating oil passage, the lubricating oil passage being arranged in the nut;

[0015] an oil filling pipe, the oil filling pipe being disposed in the nut and communicating with the lubricating oil passage;

[0016] Wherein, one end of the oil filling pipe away from the lubricating oil channel extends to the side wall of the nut to form an oil filling port, and one end of the ball is located in the lubricating oil channel.

[0017] In the above technical solution, further, the anti-seismic part further includes:

[0018] A plurality of inner cavities are provided in the lead screw body, and the plurality of inner cavities are evenly spaced along the axial direction of the lead screw body;

[0019] Powder particles are filled in the inner cavity.

[0020] In the above technical solution, further, the powder particles fill 90% to 95% of the volume of the inner cavity.

[0021] In the above technical solution, further, the wear-resistant portion further includes:

[0022] A base layer, the base layer is covered and arranged on the surface of the screw body;

[0023] a heat-insulating layer covering a surface of the base layer;

[0024] The wear-resistant layer is provided to cover the surface of the heat-insulating layer.

[0025] The beneficial effects of the utility model are:

[0026] 1. The setting of the anti-vibration part can effectively improve the anti-vibration performance of the screw body, thereby improving the accuracy and stability of the screw.

[0027] 2. The provision of the wear-resistant portion can effectively reduce the wear rate of the screw body, improve the wear resistance of the screw body, and thus improve the accuracy and stability of the screw.

[0028] 3. The setting of the lubricating oil channel effectively facilitates the lubrication of the screw body and the ball surface, reduces the friction between the screw body and the ball, and thus improves the accuracy and stability of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 It is a structural schematic diagram of a specific implementation method of the present utility model.

[0031] Figure 2 This is a schematic diagram of the lubricating oil channel structure of the utility model.

[0032] Figure 3 This is a schematic diagram of the anti-seismic structure of the utility model.

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the earthquake-resistant part of the utility model.

[0034] Figure 5 This is a schematic diagram of the wear-resistant part structure of the utility model.

[0035] The marks in the figure are:

[0036] 1. Screw body; 2. Nut; 3. Through hole; 4. Ball groove; 5. Anti-vibration part; 50. Inner cavity; 51. Particles; 6. Wear-resistant part; 60. Base layer; 61. Insulation layer; 62. Wear-resistant layer; 7. Lubricating oil channel; 8. Oil filling pipe; 9. Ball. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0039] Example 1:

[0040] The embodiment of the present application provides a seismic and wear-resistant screw, comprising: a screw body 1, the surface of which is provided with a thread groove; a nut 2, which is provided on the screw body 1 and is transmission-connected to the screw, and a through hole 3 is provided in the nut 2, and a plurality of ball grooves 4 are provided on the inner wall of the through hole 3;

[0041] The invention also includes: an anti-vibration portion 5, which always exhibits a relative movement trend opposite to the vibration acceleration direction of the screw body 1 under the action of inertia; and a wear-resistant portion 6, which is arranged on the surface of the screw body 1;

[0042] The anti-vibration part 5 is arranged in the screw body 1, and the ball 9 is rotatably arranged in the ball groove 4.

[0043] In this embodiment, during use of the screw, the rotation of the screw body drives the nut 2 to move linearly along the screw body 1. When the screw is subjected to impact vibration, the anti-vibration part 5 is set, and the anti-vibration part 5 always shows a relative movement trend in the opposite direction of the vibration acceleration of the screw body 1 under the action of inertia, thereby effectively reducing the vibration amplitude, balancing the screw vibration, and reducing the impact of the vibration on the screw body 1. At the same time, the setting of the wear-resistant part 6 can effectively improve the wear resistance of the screw body 1, reduce the wear of the screw, and thus ensure the accuracy and stability of the screw body 1. Compared with the existing technology, the utility model can effectively improve the accuracy and stability of the screw.

[0044] Example 2:

[0045] This embodiment provides a shock-resistant and wear-resistant lead screw. In addition to the technical solutions of the above embodiments, it also has the following technical features, including: a lubricating oil passage 7, which is provided in the nut 2; an oil injection pipe 8, which is provided in the nut 2 and communicates with the lubricating oil passage 7;

[0046] One end of the oil filling pipe 8 away from the lubricating oil channel 7 extends to the side wall of the nut 2 to form an oil filling port, and one end of the ball 9 is located in the lubricating oil channel 7.

[0047] In this embodiment, during use of the screw, lubricant is injected into the lubricating oil channel 7 through the oil filling pipe 8. During the rolling of the ball 9, the lubricant can be applied to the lubrication, and the rolling of the ball 9 can further apply the lubricant to the surface of the screw body 1, which effectively facilitates the addition of lubricant, improves work efficiency, and reduces the friction between the screw body and the ball 9, thereby improving the accuracy and stability of the screw.

[0048] Example 3:

[0049] This embodiment provides a shock-resistant and wear-resistant screw. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features. The shock-resistant part 5 also includes: a plurality of inner cavities 50, which are arranged in the screw body 1, and the plurality of inner cavities 50 are evenly spaced along the axial direction of the screw body 1; powder particles 51, which are filled and arranged in the inner cavity 50.

[0050] The powder particles 51 fill 90% to 95% of the volume of the inner cavity 50 .

[0051] Furthermore, the powder particles 51 may be steel balls.

[0052] In this embodiment, during the use of the screw, when the screw is subjected to impact vibration, the powder particles 51 in the inner cavity 50 always show a movement trend in the opposite direction of the vibration acceleration of the screw body 1 due to the effect of inertia, thereby moving in the opposite direction of the vibration, effectively balancing the vibration, and reducing the vibration of the screw body 1. At the same time, the energy generated by the vibration is consumed by the collision friction between the powder particles 51 and between the powder particles 51 and the inner cavity 50, thereby further reducing the impact of the vibration on the screw body 1. At the same time, by filling 90% to 95% of the volume of the inner cavity 50 with powder particles 51, the fluidity of the powder particles 51 can be guaranteed and the vibration weakening effect of the powder particles 51 can be improved. Compared with the prior art, the utility model can effectively improve the accuracy and stability of the screw.

[0053] Example 4:

[0054] This embodiment provides a shock-resistant and wear-resistant lead screw. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features. The wear-resistant part 6 also includes: a base layer 60, which is covered on the surface of the lead screw body 1; a heat insulation layer 61, which is covered on the surface of the base layer 60; and a wear-resistant layer 62, which is covered on the surface of the heat insulation layer 61.

[0055] Moreover, the base layer 60 , the wear-resistant layer 62 and the heat-insulating layer 61 are all made of corresponding conventional materials.

[0056] In this embodiment, the provision of the base layer 60 and the wear-resistant layer 62 can effectively improve the wear resistance of the screw body 1, reduce the wear of the screw body 1, and improve the precision and stability of the screw body 1. The provision of the heat insulation layer 61 can reduce the heat transferred to the screw body 1, prevent the screw body from high-temperature deformation, and further improve the precision and stability of the screw body 1.

[0057] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A seismic and wear-resistant lead screw, comprising: A screw body (1), wherein a thread groove is provided on the surface of the screw body (1); A nut (2), the nut (2) being arranged on the screw body (1) and being transmission-connected to the screw, a through hole (3) being arranged in the nut (2), and a plurality of ball (9) grooves (4) being arranged on the inner wall of the through hole (3); It is characterized by further comprising: An anti-vibration portion (5), wherein the anti-vibration portion (5) always exhibits a relative movement trend opposite to the vibration acceleration direction of the lead screw body (1) under the action of inertia; A wear-resistant portion (6), the wear-resistant portion (6) being arranged on the surface of the lead screw body (1); The anti-vibration part (5) is arranged in the screw body (1), and a ball (9) is rotatably arranged in the ball (9) groove (4).

2. The anti-vibration and wear-resistant lead screw according to claim 1, characterized in that: Also includes: a lubricating oil passage (7), the lubricating oil passage (7) being arranged in the nut (2); an oil filling pipe (8), the oil filling pipe (8) being disposed in the nut (2) and communicating with the lubricating oil passage (7); One end of the oil filling pipe (8) away from the lubricating oil channel (7) extends to the side wall of the nut (2) to form an oil filling port, and one end of the ball (9) is located in the lubricating oil channel (7).

3. The anti-vibration and wear-resistant lead screw according to claim 1, characterized in that: The anti-vibration part (5) further comprises: A plurality of inner cavities (50), wherein the inner cavities (50) are arranged in the screw body (1), and the plurality of inner cavities (50) are evenly spaced along the axial direction of the screw body (1); Powder particles (51), wherein the powder particles (51) are filled and arranged in the inner cavity (50).

4. The anti-vibration and wear-resistant lead screw according to claim 3, characterized in that: The powder particles (51) fill 90% to 95% of the volume of the inner cavity (50).

5. The anti-vibration and wear-resistant lead screw according to claim 1, characterized in that: The wear-resistant portion (6) further comprises: A base layer (60), the base layer (60) covering the surface of the screw body (1); a heat-insulating layer (61), the heat-insulating layer (61) covering the surface of the base layer (60); A wear-resistant layer (62) is provided covering the surface of the heat-insulating layer (61).

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