A full-belt driven double-action lapping machine

Abstract

The utility model discloses a kind of full leather belt driving type double-action grinding machines, including rotating component, fixed component, connecting bearing assembly and sealing shield;Rotating component includes revolute frame body and the first, second, third rotation of being installed on it belt pulley assembly, and revolute driving wheel and revolute auxiliary wheel;Fixed component includes driving motor and motor flange;The inner and outer rings of connecting bearing assembly are equipped with mounting hole, for connecting rotating and fixed component;Driving motor is simultaneously driven three rotation belt pulley assembly input shaft rotation through driving belt pulley and a rotation belt;Revolute driving wheel is fixed to the first rotation component output shaft, and revolute auxiliary wheel is installed on the second rotation component output shaft by bearing.Revolute driving wheel drives revolute frame body revolute by revolute belt, and revolute belt bypasses the large belt pulley fixed to fixed component.The utility model replaces gear transmission with pure belt transmission system, fundamentally solves the problem of gear wear and lubricating oil leakage, with the advantages of smooth operation, low noise, easy maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of grinding machine technology, and in particular relates to a double-action grinding machine with full belt drive. Background Technology

[0002] Grinding machines are essential equipment widely used in precision machining. They achieve efficient and high-precision grinding and polishing of workpiece surfaces through the combined rotation and revolution of the grinding disc. Traditional double-action grinding machines typically employ gear transmission mechanisms to drive the rotation and revolution.

[0003] Specifically, in existing technologies, a common structure involves using one set of motors and gear systems to drive the grinding disc to rotate, while another set of motors and gear systems (such as a combination of an internal gear ring, sun gear, and planetary gears) drives the orbital frame supporting the grinding disc to revolve. While this gear transmission method can provide a large transmission torque, it also has inherent drawbacks: First, the gears inevitably experience impact and wear during meshing, leading to "tooth breakage." This not only generates noise and vibration, affecting grinding accuracy and surface quality, but also requires frequent gear replacement, increasing maintenance and operating costs. Second, to reduce gear wear and heat dissipation, a large amount of lubricating oil needs to be added to the gearbox. Under long-term operation, the dynamic seals at the rotating shaft end are prone to aging and failure, causing lubricating oil to leak outwards, contaminating the grinding environment and workpiece, or the grinding fluid to leak inwards, contaminating and diluting the lubricating oil in the gearbox, leading to lubrication failure and severely affecting the reliability and service life of the equipment.

[0004] To address these issues, some improved solutions have emerged in the market, such as attempts to adopt all-electric or hybrid drive systems. However, these solutions often result in more complex structures and higher manufacturing costs. Some solutions also attempt to replace some gear drives with belt drives, but these are typically only used to drive a single motion in rotation or revolution, while the other motion still relies on gear drives, failing to fundamentally solve the inherent drawbacks of gear drives.

[0005] Therefore, there is an urgent need in this field for a new type of drive solution that can completely avoid gear transmission, thereby eliminating the problems of gear breakage and lubricating oil leakage, while ensuring that the equipment operates smoothly, reliably, and is easy to maintain. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a double-action grinding machine driven by a full belt. By employing two independent belt drive systems to drive the rotation and revolution of the grinding disc respectively, and in conjunction with a specially structured connecting bearing and sealing cover, the problems of tooth breakage and lubricating oil leakage caused by traditional gear transmission are completely eliminated.

[0007] This utility model is implemented as follows: a double-action grinding machine driven by a full belt includes a rotating component, a fixed component, a connecting bearing assembly, and a sealing cover; the rotating component includes a revolution frame, a first self-rotating pulley assembly, a second self-rotating pulley assembly, a third self-rotating pulley assembly, a revolution drive wheel, and a revolution auxiliary wheel mounted on the revolution frame; the fixed component includes a drive motor and a motor flange; both the inner and outer rings of the connecting bearing assembly are provided with mounting holes, and the rotating component is connected to the fixed component through the connecting bearing assembly; a drive pulley is provided on the output shaft of the drive motor, and the drive pulley drives the input shafts of the first self-rotating pulley assembly, the second self-rotating pulley assembly, and the third self-rotating pulley assembly to rotate simultaneously through a self-rotating belt; the revolution drive wheel is fixedly mounted on the output shaft of the first self-rotating pulley assembly; the revolution auxiliary wheel is mounted on the output shaft of the second self-rotating pulley assembly through a bearing; the revolution drive wheel drives the revolution frame to rotate around its revolution axis through a revolution belt, and the revolution belt also passes over a large pulley mounted on the fixed component. The sealing cover is installed on the rotating component.

[0008] More preferably, the first, second, and third rotating pulley assemblies are arranged in a triangular pattern and mounted on the orbital frame.

[0009] Further preferably, it also includes a tensioning device that adjusts the tension of the self-rotating belt (4).

[0010] More preferably, the tensioning device includes a tensioning wheel, which is mounted on a tensioning frame, the tensioning frame is mounted on a tensioning shaft, and a tensioning spring is installed between the tensioning frame and the orbital frame.

[0011] More preferably, the sealing cover is provided with an oil seal for achieving rotational sealing.

[0012] The advantages and technical effects of this utility model are as follows:

[0013] This invention provides a fully belt-driven double-action grinding machine, which offers significant overall technical advantages and completely revolutionizes the traditional driving method of grinding machines. The core advantage lies in the complete replacement of traditional gear transmission with a pure belt drive system (rotating belt and revolving belt), fundamentally eliminating the long-standing industry problem of gear wear and significantly reducing operating noise and vibration. Simultaneously, by eliminating the need for a large amount of lubricating oil in the gearbox, it completely avoids the risks of lubricating oil leakage contaminating the working environment and workpieces, or grinding fluid intrusion leading to lubrication failure, greatly improving the cleanliness and reliability of the equipment. Its unique structural design, such as the use of connecting bearing assemblies with mounting holes on the inner and outer rings, ensures precise alignment of the transmission components and excellent overall operational stability, thereby improving the precision and surface quality of the grinding process. The triangular arrangement of the three rotating components further optimizes dynamic balance. This design is simple in structure, significantly reducing maintenance requirements (only requiring periodic adjustment of the belt tensioning device), effectively reducing long-term operating costs. It is a highly efficient, stable, clean, and easy-to-maintain new type of precision grinding equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the tensioning device installation structure;

[0017] Figure 4 This is a three-dimensional structural diagram of the first, second, and third self-rotating pulley assemblies;

[0018] Figure 5 This is a schematic diagram of the installation position of the large pulley;

[0019] Figure 6 This is a schematic diagram of the drive motor mounting structure.

[0020] In the diagram: 1. Revolutionary frame; 2. First rotational pulley assembly; 3. Third rotational pulley assembly; 4. Rotational belt; 5. Revolutionary auxiliary wheel; 6. Bearing; 7. Second rotational pulley assembly; 8. Revolutionary belt; 9. Connecting bearing assembly; 10. Large pulley; 11. Revolutionary drive wheel; 12. Drive pulley; 13. Motor flange; 14. Drive motor; 15. Oil seal; 16. Sealing cover; 17. Tensioning device; 171. Tensioning wheel; 172. Tensioning frame; 173. Tensioning shaft; 174. Tensioning spring; 175. Spring seat. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0022] Please see Figures 1 to 6 A fully belt-driven double-action grinding machine includes a rotating component, a fixed component, a connecting bearing assembly 9, and a sealing cover 16. The rotating component includes a revolution frame 1, a first rotation pulley assembly 2, a second rotation pulley assembly 7, a third rotation pulley assembly 3, a revolution drive wheel 11, and a revolution auxiliary wheel 5 mounted on the revolution frame 1. The fixed component includes a drive motor 14 and a motor flange 13. The inner and outer rings of the connecting bearing assembly 9 are provided with mounting holes, and the rotating component is connected to the fixed component through the connecting bearing assembly 9.

[0023] Technical Effects: This solution constructs a completely new basic architecture for a dual-action grinding machine. Its core lies in a connecting bearing assembly 9 with mounting holes on both the inner and outer rings. The preferred connecting bearing assembly is a crossed roller bearing, which stably supports the entire complex rotating component on the fixed component. This provides a solid and precisely aligned mechanical platform for subsequent pure belt drive, ensuring high stability and reliability of equipment operation and fundamentally avoiding the need for traditional gearbox structures.

[0024] 2. Self-rotation drive scheme

[0025] The output shaft of the drive motor 14 is provided with a drive pulley 12. The drive pulley 12 drives the input shafts of the first self-rotating pulley assembly 2, the second self-rotating pulley assembly 7 and the third self-rotating pulley assembly 3 to rotate simultaneously through a self-rotating belt 4. A grinding component is installed on the output shaft of each self-rotating pulley assembly 2.

[0026] Technical benefits: This solution uses a single motor and a single self-rotating belt to synchronously drive multiple self-rotating pulley assemblies, realizing the rotational motion of multiple grinding discs. Belt drive has the characteristics of buffering and absorbing vibration, which can effectively eliminate vibration and impact during motor start-up, shutdown, and operation, making the grinding process more stable and significantly improving the grinding quality of the workpiece surface. At the same time, the structure is simple, reducing manufacturing and maintenance costs.

[0027] 3. Revolution-driven solution

[0028] The revolution drive wheel 11 is fixedly mounted on the output shaft of the first rotation pulley assembly 2; the revolution auxiliary wheel 5 is mounted on the output shaft of the second rotation pulley assembly 7 via a bearing 6; the revolution drive wheel 11 drives the revolution frame 1 to rotate around its revolution axis via a revolution belt 8, which also passes over a large pulley 10 mounted on a fixed component. The transmission path of the revolution belt 8 is as follows: it passes sequentially around the revolution drive wheel 11, the large pulley 10, and the revolution auxiliary wheel 5 to form a closed-loop transmission.

[0029] Technical Effects: This solution cleverly utilizes the output shaft of one rotating component as the driving source for revolution, and the output shaft of another rotating component as the tension support point for revolution. Power is transmitted to the revolution frame 1 through the revolution belt 8 and the large pulley 10. This design creatively achieves pure belt drive for revolution, completely eliminating the traditional internal and external gear meshing mechanism, thereby eradicating the "tooth grinding" phenomenon and the risk of lubricating oil leakage caused by gear lubrication. It also results in low operating noise and minimal maintenance requirements.

[0030] 4. Optimize the layout plan

[0031] The first rotating pulley assembly 2, the second rotating pulley assembly 7, and the third rotating pulley assembly 3 are arranged in a triangle on the orbital frame 1.

[0032] Technical benefits: The three rotating components are arranged in a triangular pattern, which makes the mass distribution on the orbital frame 1 more balanced, significantly improves the dynamic balance performance of the rotating parts during high-speed orbital rotation, effectively reduces the vibration caused by centrifugal force, further ensures the stability and processing accuracy of the whole machine, and extends the service life of the main components of the equipment.

[0033] 5. Tensioning and Sealing Scheme

[0034] Both the self-rotating belt 4 and the revolution belt 8 are equipped with tensioning devices 17; the tensioning device 17 includes a tensioning wheel 171, which is mounted on a tensioning frame 172. The tensioning frame is mounted on a tensioning shaft 173. A tensioning spring 174 is installed between the tensioning frame and the revolution frame 1. Specifically, the tensioning spring is mounted on a spring seat 175, which is fixed to the revolution frame 1.

[0035] The sealing cover 16 is provided with an oil seal 15 for achieving rotational sealing.

[0036] Technical benefits: The tensioning device 17 allows for convenient adjustment of belt tension, compensating for the natural elongation of the belt after long-term use, and ensuring that transmission efficiency and reliability are always at their best. The oil seal 15 installed on the sealing cover 16 forms a crucial rotating dynamic seal barrier, effectively preventing external grinding fluid, dust, and other foreign matter from entering the precision components such as bearings inside the equipment. It also prevents the escape of any trace amounts of wear debris that may be generated internally, protecting the working environment and the equipment itself.

[0037] II. Explanation of Working Principle

[0038] The working principle of this utility model is as follows: The drive motor 14 starts, and through the drive pulley 12 on its output shaft and the self-rotating belt 4, it synchronously transmits power to the first, second, and third self-rotating pulley assemblies 2, 7, and 3, driving their input shafts to rotate, ultimately achieving high-speed rotation of the grinding discs mounted on the output shafts of each assembly. Simultaneously, the rotation of the output shaft of the first self-rotating pulley assembly 2 drives the orbital drive wheel 11, which is fixedly mounted thereon, to rotate. The orbital drive wheel 11 drives the orbital frame 1 to rotate via the orbital belt 8. The orbital belt 8 bypasses the large pulley 10 fixed to the equipment body and the orbital auxiliary wheel 5 mounted on the output shaft of the second self-rotating pulley assembly 7. The orbital auxiliary wheel 5 rotates freely on the bearing 6, and its core function is to cooperate with the orbital drive wheel 11 to tension the orbital belt 8 and change its wrap angle, ensuring stable and reliable orbital transmission. Thus, the orbital frame 1 and all its self-rotating pulley assemblies and grinding discs revolve as a whole around the axis connecting the bearing assembly 9. The entire device uses two independent belt drive systems to efficiently and smoothly combine the rotation and revolution of the grinding disc, and there is no gear meshing throughout the process, achieving pure belt drive.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 belt-driven double-action grinding machine, comprising a rotating component, a fixed component, a connecting bearing assembly (9), and a sealing cover (16), characterized in that: The rotating component includes a revolution frame (1), a first rotation pulley assembly (2), a second rotation pulley assembly (7), a third rotation pulley assembly (3), a revolution drive wheel (11), and a revolution auxiliary wheel (5) mounted on the revolution frame (1). The fixed components include a drive motor (14) and a motor flange (13). The inner and outer rings of the connecting bearing assembly (9) are provided with mounting holes, and the rotating component is connected to the fixed component through the connecting bearing assembly (9). The output shaft of the drive motor (14) is provided with a drive pulley (12), which drives the input shafts of the first rotation pulley assembly (2), the second rotation pulley assembly (7) and the third rotation pulley assembly (3) to rotate simultaneously via a rotation belt (4); The revolution drive wheel (11) is fixedly mounted on the output shaft of the first rotation pulley assembly (2); The orbital auxiliary wheel (5) is mounted on the output shaft of the second rotational pulley assembly (7) via a bearing (6); The revolution drive wheel (11) drives the revolution frame (1) to rotate around its revolution axis via a revolution belt (8), and the revolution belt (8) also passes around a large pulley (10) installed on the fixed component. The sealing cover (16) is installed on the orbital frame (1).

2. The fully belt-driven double-action grinding machine according to claim 1, characterized in that: The first rotating pulley assembly (2), the second rotating pulley assembly (7) and the third rotating pulley assembly (3) are arranged in a triangle on the orbital frame (1).

3. The fully belt-driven double-action grinding machine according to claim 1, characterized in that: It also includes a tensioning device that adjusts the tension of the self-rotating belt (4).

4. The fully belt-driven double-action grinding machine according to claim 3, characterized in that: The tensioning device (17) includes a tensioning wheel (171), which is mounted on a tensioning frame (172). The tensioning frame is mounted on a tensioning shaft (173), and a tensioning spring (174) is installed between the tensioning frame and the orbital frame (1).

5. The fully belt-driven double-action grinding machine according to claim 1, characterized in that: The sealing cover (16) is provided with an oil seal (15) for achieving rotational sealing.

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