Ball screw strengthening structure of screw stepping motor

Abstract

The utility model relates to the technical field of ball screw reinforcing structures, and discloses a ball screw reinforcing structure of a screw stepping motor, which comprises a ball screw main body. According to the screw stepping motor ball screw reinforcing structure, through the arrangement of the reinforcing mechanism, when the screw stepping motor ball screw reinforcing structure is used under the high-load working condition, the ball screw body is prone to being bent and fractured, and therefore the cavity is formed in the ball screw body; the first arc-shaped reinforcing rib, the second arc-shaped reinforcing rib and the third arc-shaped reinforcing rib are installed in the cavity, the inner splicing shape is of a triangular structure, and due to the fact that the triangular structure has high stability, external force can be evenly dispersed, stress is prevented from being concentrated at a certain point or a certain area, and the service life is prolonged. When the ball screw main body is subjected to bending force or other complex stress generated by high load, the reinforcing ribs of the triangular structure can quickly decompose and transmit the stress, so that the fatigue life of the ball screw is prolonged, and the risk of fracture is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of ball screw reinforcement structure, and in particular to a ball screw reinforcement structure for a ball screw stepper motor. Background Technology

[0002] As a key component of mechatronics, the ball screw stepper motor is widely used in various automated equipment and precision machinery, such as CNC machine tools, 3D printers, industrial robots, and medical devices. Its core component, the ball screw, is responsible for precisely converting the motor's rotational motion into linear motion, playing a decisive role in the overall operation and positioning accuracy of the equipment. In today's manufacturing industry, with its continuous pursuit of high precision, high load capacity, and long lifespan equipment, the working conditions faced by ball screw stepper motors are becoming increasingly demanding. On the one hand, with the continuous expansion and upgrading of equipment functions, higher requirements are placed on the load-bearing capacity of the ball screw. In equipment such as large machining centers, the ball screw needs to withstand enormous axial and radial loads to ensure the stability and accuracy of the machining process.

[0003] However, traditional ball screws are prone to bending deformation under high load conditions. This not only causes changes in the fit clearance between the screw and the nut, affecting transmission accuracy, but may also lead to fatigue fracture of the screw in the long run, seriously shortening the service life of the equipment. Therefore, a reinforced structure for ball screws in stepper motors is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a reinforced structure for the ball screw of a lead screw stepper motor, which solves the problem that the traditional ball screw structure mentioned in the background art is prone to bending and deformation under high load conditions. This not only causes changes in the fit clearance between the lead screw and the nut, affecting the transmission accuracy, but may also lead to fatigue fracture of the lead screw in the long term, seriously shortening the service life of the equipment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a ball screw reinforcement structure for a lead screw stepper motor, comprising a ball screw body, a cavity inside the ball screw body, a reinforcing mechanism installed inside the cavity, a nut connector threadedly connected to the surface of the ball screw body, and lubrication mechanisms installed on both sides of the surface of the nut connector. The reinforcing mechanism includes a first arc-shaped reinforcing rib installed inside the cavity, a second arc-shaped reinforcing rib overlapping one side of the first arc-shaped reinforcing rib, and a third arc-shaped reinforcing rib overlapping the other side of the first arc-shaped reinforcing rib. The lubrication mechanism includes oil reservoirs installed on both sides of the surface of the nut connector, a flow pipe penetrating the lower surface of the oil reservoir, and a micro oil pump penetrating the end of the flow pipe.

[0008] As a further embodiment of this utility model, the first, second, and third arc-shaped reinforcing ribs have a triangular internal structure, and the first, second, and third arc-shaped reinforcing ribs are made of alloy. The arrangement of the first, second, and third arc-shaped reinforcing ribs enhances the internal structural strength of the ball screw body.

[0009] As a further embodiment of this utility model, the output end of the micro oil pump is connected to a connecting pipe, and the end of the connecting pipe is connected to an oil guide groove opened inside the nut connector. The oil guide groove is used to transport oil.

[0010] As a further embodiment of this utility model, the top of the oil tank is provided with an oil filling port, and a sealing plug is inserted into the oil filling port. The sealing plug serves to achieve a sealing function.

[0011] As a further embodiment of this utility model, a transparent plate is installed on one side of the oil storage tank, and scale lines are engraved on the surface of the transparent plate. The scale lines serve to observe the oil level.

[0012] As a further embodiment of this utility model, the nut connector has a threaded groove inside, and the threaded groove has several oil outlet holes inside, which serve to dissipate oil.

[0013] As a further embodiment of this utility model, a support base is installed on both sides of the ball screw body, and a connecting shaft is installed on one side of one of the support bases. A stepper motor body is installed on one side of the connecting shaft. The stepper motor body is used to drive the ball screw body to rotate.

[0014] As a further embodiment of this utility model, the surface of the support base has two threaded holes, and the threaded holes are internally connected to threaded posts. The threaded posts serve to fix the support base.

[0015] (III) Beneficial Effects

[0016] This utility model provides a reinforced structure for the ball screw of a lead screw stepper motor, which has the following beneficial effects:

[0017] 1. The ball screw reinforcement structure of this stepper motor addresses the issue of bending and breakage of the ball screw body under high load conditions. A cavity is incorporated within the ball screw body, housing a first, second, and third arc-shaped reinforcing rib. These ribs form a triangular structure, which provides significant stability and evenly distributes external forces, preventing stress concentration at a single point or area. When the ball screw body is subjected to bending forces or other complex stresses under high loads, the triangular reinforcing ribs quickly decompose and transfer these stresses, thus extending the fatigue life of the ball screw and reducing the risk of breakage.

[0018] 2. This ball screw stepper motor features a reinforced structure. Through the lubrication mechanism, it addresses the wear that occurs on the threads of the nut connector and the ball screw body during use. Therefore, miniature oil pumps are installed on both sides of the nut connector. These pumps deliver lubricating oil from the oil reservoir to the oil guide groove inside the nut connector via pipelines. This quickly forms a uniform oil film on the contact surface between the nut connector and the ball screw body, effectively mitigating wear caused by friction and extending the service life of both the nut connector and the ball screw body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the reinforcing mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the lubrication mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the main structure of the ball screw of this utility model.

[0023] In the diagram: 1. Ball screw body; 2. Reinforcing mechanism; 201. First arc-shaped reinforcing rib; 202. Second arc-shaped reinforcing rib; 203. Third arc-shaped reinforcing rib; 3. Nut connector; 4. Lubrication mechanism; 401. Oil reservoir; 402. Flow pipe; 403. Miniature oil pump; 5. Connecting pipe; 6. Oil inlet; 7. Transparent plate; 8. Support base; 9. Connecting shaft; 10. Stepper motor body; 11. Threaded column. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the 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.

[0025] Please see Figures 1 to 4 This utility model provides a technical solution: a reinforced structure for a ball screw in a stepper motor, comprising a ball screw body 1, with a cavity inside the ball screw body 1, and a reinforcing mechanism 2 installed inside the cavity. The reinforcing mechanism 2 prevents stress concentration at a specific point or area. When the ball screw body 1 is subjected to bending forces or other complex stresses generated by high loads, the triangular reinforcing ribs can quickly decompose and transfer these stresses, thereby extending the fatigue life of the ball screw and reducing the risk of fracture. A nut connector 3 is threaded onto the surface of the ball screw body 1, and lubrication mechanisms 4 are installed on both sides of the nut connector 3. The lubrication mechanisms 4 effectively alleviate wear caused by friction, extending the service life of the nut connector 3 and the ball screw body 1.

[0026] The reinforcing mechanism 2 includes a first arc-shaped reinforcing rib 201 installed inside the cavity, a second arc-shaped reinforcing rib 202 overlapping one side of the first arc-shaped reinforcing rib 201, and a third arc-shaped reinforcing rib 203 overlapping the other side of the first arc-shaped reinforcing rib 201.

[0027] The lubrication mechanism 4 includes an oil reservoir 401 installed on both sides of the surface of the nut connector 3. A flow pipe 402 is connected through the lower surface of the oil reservoir 401, and a micro oil pump 403 is connected through the end of the flow pipe 402.

[0028] The first arc-shaped reinforcing rib 201, the second arc-shaped reinforcing rib 202, and the third arc-shaped reinforcing rib 203 have a triangular internal structure. The first arc-shaped reinforcing rib 201, the second arc-shaped reinforcing rib 202, and the third arc-shaped reinforcing rib 203 are made of alloy. The setting of the first arc-shaped reinforcing rib 201, the second arc-shaped reinforcing rib 202, and the third arc-shaped reinforcing rib 203 plays a role in improving the internal structural strength of the ball screw body 1.

[0029] The output end of the micro oil pump 403 is connected to a connecting pipe 5, and the end of the connecting pipe 5 is connected to an oil guide groove opened inside the nut connector 3. The oil guide groove is used to transport oil.

[0030] The top of the oil tank 401 is provided with an oil filling port 6, and a sealing plug is inserted inside the oil filling port 6. The sealing plug serves to seal the oil tank.

[0031] A transparent plate 7 is installed on one side of the oil tank 401. The surface of the transparent plate 7 is engraved with scale lines, which serve to observe the oil level.

[0032] The nut connector 3 has a threaded groove inside, and several oil outlet holes are provided inside the threaded groove. The oil outlet holes serve to discharge oil.

[0033] Both sides of the ball screw body 1 are equipped with support bases 8. A connecting shaft 9 is installed on one side of one of the support bases 8, and a stepper motor body 10 is installed on one side of the connecting shaft 9. The stepper motor body 10 is used to drive the ball screw body 1 to rotate.

[0034] The surface of the support base 8 has two threaded holes, and the threaded holes are connected to threaded posts 11. The threaded posts 11 serve to fix the support base 8.

[0035] In this invention, the working steps of the device are as follows:

[0036] First step: When used under high load conditions, the ball screw body 1 is prone to bending and breakage. Therefore, a cavity is provided inside the ball screw body 1, and a first arc-shaped reinforcing rib 201, a second arc-shaped reinforcing rib 202 and a third arc-shaped reinforcing rib 203 are installed inside the cavity. The internal splicing shape is triangular. Since the triangular structure has greater stability, it can evenly distribute external forces.

[0037] The second step: During use, the threads on the surface of the nut connector 3 and the ball screw body 1 will wear. Therefore, a micro oil pump 403 is provided on both sides of the nut connector 3. The micro oil pump 403 is used to transport the lubricating oil inside the oil tank 401 through the pipeline to the oil guide groove inside the nut connector 3, which can quickly form a uniform oil film on the contact surface between the nut connector 3 and the ball screw body 1.

[0038] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0039] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball screw reinforcing structure of a lead screw stepping motor, comprising a ball screw main body (1), characterized in that: The inside of the ball screw body (1) is provided with a cavity, the inside of the cavity is provided with a reinforcing mechanism (2), the surface of the ball screw body (1) is screw-connected with a nut connecting piece (3), the surface of the nut connecting piece (3) is provided with a lubricating mechanism (4) on both sides, The reinforcing mechanism (2) comprises a first arc-shaped reinforcing rib (201) installed in the cavity, one side of the first arc-shaped reinforcing rib (201) is overlapped with a second arc-shaped reinforcing rib (202), and the other side of the first arc-shaped reinforcing rib (201) is overlapped with a third arc-shaped reinforcing rib (203); The lubricating mechanism (4) comprises an oil storage tank (401) installed on the surface of the nut connecting piece (3) on both sides, the lower surface of the oil storage tank (401) is connected with a flow pipe (402), and the tail end of the flow pipe (402) is connected with a micro oil pump (403).

2. The ball screw of claim 1, wherein: The first arc-shaped reinforcing rib (201), the second arc-shaped reinforcing rib (202) and the third arc-shaped reinforcing rib (203) are triangular in shape, and the materials of the first arc-shaped reinforcing rib (201), the second arc-shaped reinforcing rib (202) and the third arc-shaped reinforcing rib (203) are alloys.

3. The ball screw reinforcement structure for a lead screw stepper motor according to claim 1, characterized in that: The output end of the micro oil pump (403) is connected with a connecting pipe (5), and the tail end of the connecting pipe (5) is connected with an oil guide groove formed in the nut connecting piece (3).

4. The ball screw of claim 1, wherein: The top of the oil storage tank (401) is provided with an oil filling port (6), and the inside of the oil filling port (6) is inserted with a sealing plug.

5. The ball screw of claim 1, wherein: One side of the oil storage tank (401) is provided with a transparent plate (7), and the surface of the transparent plate (7) is marked with scale lines.

6. The ball screw of claim 1, wherein: The inside of the nut connecting piece (3) is provided with a threaded groove, and the threaded groove is provided with a plurality of oil outlets.

7. The ball screw of claim 1, wherein: Both sides of the ball screw body (1) are provided with support bases (8), one side of one of the support bases (8) is provided with a connecting shaft (9), and one side of the connecting shaft (9) is provided with a stepping motor body (10).

8. The ball screw of claim 7, wherein: The surface of the support base (8) is provided with two threaded holes, and the threaded holes are screw-connected with threaded columns (11).

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