Direct coupling type spindle modular mechanism

Abstract

The utility model relates to spindle technical field discloses a straight knot formula spindle modularization mechanism, including drive motor, protective shell and spindle body, the output fixedly connected with rotating shaft of drive motor, the middle part of upper end of the outer wall of spindle body rear end is all seted up with the second cross groove, the middle part of upper end of rotating shaft front end outer wall is all fixedly connected with the second cross block, the outer wall of second cross block is all closely combined with the inner wall of second cross groove, the middle part of rotating shaft front end outer wall is seted up with the mounting groove, the inside of mounting groove is provided with two -way screw rod, in the utility model, through the rotation rotator, the required clamping force can be conveniently applied, realizes quick, reliable connection, the fastening mode of modularization also is convenient for the subsequent disassembly, maintenance or replacement, in addition, the design theory of two -way screw rod allows the fine adjustment to clamping force to adapt to the spindle body of different size or tolerance, improves the applicability of the mechanism to different products.

Description

Technical Field

[0001] This utility model relates to the field of spindle technology, and in particular to a direct-drive modular spindle mechanism. Background Technology

[0002] Direct-drive spindle mechanisms are a highly efficient spindle drive method. Their core feature is the elimination of traditional intermediate transmission links such as belts, gears, or couplings, directly and rigidly connecting the spindle motor to the spindle unit. This "direct-drive" design minimizes the power transmission path, reduces energy loss, and achieves extremely high transmission efficiency. It also offers faster response and superior dynamic performance. By reducing elastic deformation and vibration of transmission components, this mechanism can provide higher speeds, stronger torque output, and improved machining accuracy and surface quality. It is particularly suitable for precision machining applications with high precision and stability requirements, such as the manufacturing of complex parts in aerospace and medical device industries.

[0003] Traditional direct-drive spindle mechanisms often rely solely on flange clamping or simple bolt fixing. This method may not provide uniform and sufficient axial clamping force, causing the connection to loosen easily under high-speed or heavy-load conditions. Furthermore, adjusting the clamping force usually requires replacing shims of different thicknesses, which is very inconvenient. In addition, when traditional structures need to be disassembled for maintenance or to replace the spindle / motor, a large number of peripheral components must be disassembled. The whole process is complex and time-consuming, which not only significantly increases maintenance costs but also extends equipment downtime.

[0004] Therefore, those skilled in the art have provided a direct-drive modular spindle mechanism to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a direct-drive modular spindle mechanism. This mechanism allows for easy application of the required clamping force by rotating the rotating component, achieving a fast and reliable connection. The modular fastening method also facilitates subsequent disassembly, maintenance, or replacement. Furthermore, the design of the bidirectional threaded rod theoretically allows for fine-tuning of the clamping force to accommodate spindle bodies of different sizes or tolerances, thus improving the applicability of the mechanism to various products.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A direct-drive modular spindle mechanism includes a drive motor, a protective housing, and a spindle body. The output end of the drive motor is fixedly connected to a rotating shaft. A second cross groove is formed at the middle of the upper and lower ends of the outer wall of the rear end of the spindle body. A second cross block is fixedly connected at the middle of the upper and lower ends of the outer wall of the front end of the rotating shaft. The outer walls of the second cross blocks are tightly fitted to the inner walls of the second cross grooves. A mounting groove is formed at the middle of the outer wall of the front end of the rotating shaft. A bidirectional threaded rod is provided inside the mounting groove. A rotating component is provided on one side of the rotating shaft. One side of the bidirectional threaded rod passes through the mounting groove to the outside of one side of the rotating shaft and is fixedly connected to the other side of the rotating component. Clamping plates are threadedly connected to both sides of the outer wall of the bidirectional threaded rod. First cross blocks are fixedly connected to the outer walls of adjacent sides of the front end of the clamping plates. A first cross groove is formed on both sides of the outer wall of the rear end of the spindle body. The outer walls of the first cross blocks are engaged with the inner walls of the first cross grooves.

[0008] Through the above technical solution, the initial positioning of the rotating shaft and the main shaft body is achieved by the tight fit between the second cross block and the second cross groove. By rotating the rotating component to drive the bidirectional threaded rod, the clamping plates on both sides move towards each other or in opposite directions. This design can simultaneously and evenly apply axial clamping force to the main shaft body, ensuring that the main shaft body is firmly pressed against the front end of the rotating shaft. The uniform clamping force helps to prevent axial movement or tilting of the main shaft body during high-speed rotation. The snap-fit ​​between the first cross block and the first cross groove further ensures the stable connection between the main shaft body and the rotating shaft. The required clamping force can be easily applied by rotating the rotating component, achieving a fast and reliable connection. This modular fastening method also facilitates subsequent disassembly, maintenance, or replacement. In addition, the design of the bidirectional threaded rod theoretically allows for fine adjustment of the clamping force to adapt to main shaft bodies of different sizes or tolerances, improving the applicability of the mechanism to different products.

[0009] Furthermore, the outer wall of the drive motor is tightly fitted to the inner wall of the protective shell, and multiple ventilation holes are provided on both sides of the upper and lower surfaces of the protective shell. Multiple ventilation grooves are provided on the outer wall of the rear end of the protective shell, and filter plates are fixedly connected to the inner walls of the ventilation grooves.

[0010] The above technical solution provides a closed space for the motor through the protective shell, which can effectively prevent impurities such as chips, coolant, and dust from the processing site from directly contacting and contaminating the motor, avoiding damage to key components such as the motor windings and bearings, thereby protecting the motor and extending its service life. The design of the vent holes and vent grooves provides a channel for the heat inside the motor to dissipate outward. This design allows hot air to be naturally convectioned or assisted by a fan to be discharged, preventing the motor from overheating. In addition, the design of the filter plate can block larger dust, debris and other impurities from entering the motor.

[0011] Furthermore, a fixing block is fixedly connected to the middle of the upper and lower ends of the outer wall of the rear end of the main shaft body, and the fixing block and the rotating shaft are fixedly connected by fixing screws.

[0012] The above technical solution provides additional, distributed locking force. This multi-point fixing method, compared to single axial locking, can more effectively resist radial forces or torques that may be generated during rotation, preventing relative slippage or loosening between the two, thereby enhancing the overall rigidity and operational stability of the connection.

[0013] Furthermore, the other side of the bidirectional threaded rod is rotatably connected to the inner wall of the other side of the mounting groove, and the outer wall of the rear end of the clamping plate is slidably attached to the inner wall of the mounting groove.

[0014] The above technical solution and design make the clamping process of the clamping plate more stable.

[0015] Furthermore, limit grooves are provided at the upper and lower ends of the inner wall of the mounting groove, and limit blocks are fixedly connected to the upper and lower surfaces of the rear end of the clamping plate, with the outer walls of the limit blocks slidingly fitting against the inner walls of the limit grooves.

[0016] Through the above technical solution, by cooperating with the limiting block and the limiting groove, the clamping plate is forced to slide linearly along the axial direction of the limiting groove, effectively preventing radial displacement.

[0017] This utility model has the following beneficial effects:

[0018] This utility model proposes a direct-drive modular spindle mechanism that allows for easy application of the required clamping force by rotating the rotating component, achieving a fast and reliable connection. The modular fastening method also facilitates subsequent disassembly, maintenance, or replacement. In addition, the design of the bidirectional threaded rod theoretically allows for fine adjustment of the clamping force to adapt to spindle bodies of different sizes or tolerances, thus improving the applicability of the mechanism to different products. Attached Figure Description

[0019] Figure 1 This is an isometric view of a direct-drive modular spindle mechanism proposed in this utility model;

[0020] Figure 2 This is an unfolded view of a direct-drive modular spindle mechanism proposed in this utility model;

[0021] Figure 3 This is an exploded view of a portion of the structure of a direct-drive modular spindle mechanism proposed in this utility model;

[0022] Figure 4 This is a partial structural cross-sectional view of a direct-drive modular spindle mechanism proposed in this utility model;

[0023] Figure 5 This is a partial isometric view of a direct-drive modular spindle mechanism proposed in this utility model;

[0024] Figure 6 This is a partial structural isometric view of a direct-drive modular spindle mechanism proposed in this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Drive motor; 2. Protective shell; 201. Vent hole; 202. Vent groove; 203. Filter plate; 3. Rotating shaft; 301. Mounting groove; 302. Limiting groove; 303. First cross block; 4. Rotating component; 401. Bidirectional threaded rod; 402. Clamping plate; 403. Second cross block; 404. Limiting block; 5. Main shaft body; 501. First cross groove; 502. Second cross groove; 503. Fixing block. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Reference Figure 4 , Figure 5 and Figure 6This utility model provides a specific embodiment: a direct-drive modular spindle mechanism, including a drive motor 1, a protective shell 2, and a spindle body 5. A rotating shaft 3 is fixedly connected to the output end of the drive motor 1. Second cross grooves 502 are provided at the middle of the upper and lower ends of the outer wall of the rear end of the spindle body 5. Second cross blocks 303 are fixedly connected at the middle of the upper and lower ends of the outer wall of the front end of the rotating shaft 3. The outer walls of the second cross blocks 303 are tightly fitted to the inner walls of the second cross grooves 502. A mounting groove 30 is provided at the middle of the outer wall of the front end of the rotating shaft 3. 1. A bidirectional threaded rod 401 is provided inside the mounting groove 301. A rotating component 4 is provided on one side of the rotating shaft 3. One side of the bidirectional threaded rod 401 passes through the mounting groove 301 to the outside of one side of the rotating shaft 3 and is fixedly connected to the other side of the rotating component 4. Clamping plates 402 are threadedly connected to both sides of the outer wall of the bidirectional threaded rod 401. First cross blocks 403 are fixedly connected to the outer walls of the front and adjacent sides of the clamping plates 402. First cross grooves 501 are opened on both sides of the outer wall of the rear end of the main shaft body 5. The outer side of the first cross blocks 403... The first cross block 303 engages with the inner wall of the first cross groove 501, and the second cross block 303 fits tightly with the second cross groove 502, achieving initial positioning of the rotating shaft 3 and the main shaft body 5. By rotating the rotating component 4, the bidirectional threaded rod 401 is driven, causing the clamping plates 402 on both sides to move towards each other or in opposite directions. This design can simultaneously and evenly apply axial clamping force to the main shaft body 5, ensuring that the main shaft body 5 is firmly pressed against the front end of the rotating shaft 3. The uniform clamping force helps prevent axial movement or tilting of the main shaft body 5 during high-speed rotation. The engagement of the first cross block 403 with the first cross groove 501 further ensures a stable connection between the main shaft body 5 and the rotating shaft 3. The required clamping force can be easily applied by rotating the rotating component 4, achieving a fast and reliable connection. This modular fastening method also facilitates subsequent disassembly, maintenance, or replacement. In addition, the design of the bidirectional threaded rod 401 theoretically allows for fine adjustment of the clamping force to adapt to main shaft bodies 5 of different sizes or tolerances, improving the applicability of the mechanism to different products.

[0029] Reference Figure 1 , Figure 2 and Figure 3The outer wall of the drive motor 1 is tightly fitted to the inner wall of the protective shell 2. Multiple ventilation holes 201 are provided on both sides of the upper and lower surfaces of the protective shell 2, and multiple ventilation grooves 202 are provided on the outer wall of the rear end of the protective shell 2. Filter plates 203 are fixedly connected to the inner walls of the ventilation grooves 202. The protective shell 2 provides a closed space for the motor, effectively preventing chips, coolant, dust, and other impurities from the processing area from directly contacting and contaminating the motor, thus avoiding damage to the motor's windings, bearings, and other critical components, protecting the motor and extending its service life. The design of the ventilation holes 201 and ventilation grooves 202 provides a channel for the heat inside the motor to dissipate outwards. This design allows hot air to naturally convection or be assisted by a fan to exhaust, preventing the motor from overheating. In addition, the filter plates 203 can block larger dust, debris, and other impurities from entering the motor. Fixing blocks 503 are fixedly connected to the middle of the upper and lower ends of the outer wall of the rear end of the spindle body 5. The fixing blocks 503 and the rotating shaft 3 are connected by a fixed... The fixed screw connection provides additional, distributed locking force. This multi-point fixing method, compared to single axial locking, can more effectively resist radial forces or torques that may be generated during rotation, preventing relative slippage or loosening between the two, thereby enhancing the overall rigidity and operational stability of the connection. The other side of the bidirectional threaded rod 401 is rotatably connected to the inner wall of the other side of the mounting groove 301. The outer wall of the rear end of the clamping plate 402 is slidably fitted with the inner wall of the mounting groove 301. This design makes the clamping process of the clamping plate 402 more stable. Limiting grooves 302 are provided at the upper and lower ends of the inner wall of the mounting groove 301. Limiting blocks 404 are fixedly connected to the upper and lower surfaces of the rear end of the clamping plate 402. The outer wall of the limiting block 404 is slidably fitted with the inner wall of the limiting groove 302. Through the cooperation of the limiting block 404 and the limiting groove 302, the clamping plate 402 is forced to slide linearly only along the axial direction of the limiting groove 302, effectively preventing radial displacement.

[0030] Working principle: First, the rotating shaft 3 connected to the output end of the drive motor 1 is brought close to the main shaft body 5. The second cross blocks 303 at the upper and lower ends of the front end of the rotating shaft 3 will automatically embed into the corresponding second cross grooves 502 at the upper and lower ends of the rear end of the main shaft body 5, achieving initial axial and radial positioning and ensuring that the center lines of the two are aligned. Next, by rotating the rotating component 4, the bidirectional threaded rod 401 fixedly connected to it will rotate. Since the thread direction is opposite, the bidirectional threaded rod 401 will drive the clamping plates 402 on both sides to move towards the main shaft body 5 at the same time. During the movement, the rear end of the clamping plate 402 will fit against the inner wall of the mounting groove 301 opened at the front end of the rotating shaft 3, and slide in the limiting groove 302 through the limiting block 404, ensuring that only axial linear movement is performed and preventing skew. When the clamping plates 402 are in place, they will firmly press the spindle body 5, making it tightly fixed to the front end of the rotating shaft 3. At this time, the cooperation between the first cross block 403 and the first cross groove 501 further locks the position of the spindle body 5. After the above axial fastening is completed, the fixing block 503 at the rear end of the spindle body 5 is fixedly connected to the rotating shaft 3 by tightening the fixing screws, providing additional radial support and anti-torque capability, and further enhancing the overall rigidity of the connection. Throughout the process, the drive motor 1 is tightly wrapped by the protective shell 2. The heat generated by the motor operation is dissipated to the outside through the vent holes 201 and vent grooves 202 on the protective shell 2, while the filter plate 203 in the vent groove 202 prevents external impurities from entering the motor, ensuring the safe operation of the motor.

[0031] The following points should be noted in this article:

[0032] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0033] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A direct-drive modular spindle mechanism, comprising a drive motor (1), a protective housing (2), and a spindle body (5), characterized in that: The output end of the drive motor (1) is fixedly connected to a rotating shaft (3). A second cross groove (502) is provided at the middle of the upper and lower ends of the outer wall of the rear end of the main shaft body (5). A second cross block (303) is fixedly connected at the middle of the upper and lower ends of the outer wall of the front end of the rotating shaft (3). The outer wall of the second cross block (303) is tightly fitted to the inner wall of the second cross groove (502). A mounting groove (301) is provided at the middle of the outer wall of the front end of the rotating shaft (3). A bidirectional threaded rod (401) is provided inside the mounting groove (301). A side of the rotating shaft (3) is provided with... There is a rotating component (4). One side of the bidirectional threaded rod (401) passes through the mounting groove (301) to the outside of the rotating shaft (3) and is fixedly connected to the other side of the rotating component (4). Both sides of the outer wall of the bidirectional threaded rod (401) are threadedly connected to clamping plates (402). The outer walls of the clamping plates (402) on the adjacent sides at the front end are fixedly connected to first cross blocks (403). The outer walls of the rear end of the main shaft body (5) are provided with first cross grooves (501). The outer walls of the first cross blocks (403) are engaged with the inner walls of the first cross grooves (501).

2. The direct-drive modular spindle mechanism according to claim 1, characterized in that: The outer wall of the drive motor (1) is tightly fitted to the inner wall of the protective shell (2). Multiple air vents (201) are provided on both sides of the upper and lower surfaces of the protective shell (2). Multiple air vents (202) are provided on the outer wall of the rear end of the protective shell (2). A filter plate (203) is fixedly connected to the inner wall of the air vents (202).

3. The direct-drive modular spindle mechanism according to claim 1, characterized in that: The upper and lower ends of the outer wall of the main shaft body (5) are fixedly connected to a fixing block (503), and the fixing block (503) and the rotating shaft (3) are fixedly connected by fixing screws.

4. The direct-drive modular spindle mechanism according to claim 1, characterized in that: The other side of the bidirectional threaded rod (401) is rotatably connected to the inner wall of the other side of the mounting groove (301), and the outer wall of the rear end of the clamping plate (402) is slidably attached to the inner wall of the mounting groove (301).

5. The direct-drive modular spindle mechanism according to claim 1, characterized in that: Limiting grooves (302) are provided at the upper and lower ends of the inner wall of the mounting groove (301). Limiting blocks (404) are fixedly connected to the upper and lower surfaces of the rear end of the clamping plate (402). The outer wall of the limiting block (404) slides against the inner wall of the limiting groove (302).

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