Heavy-load buffer connecting structure of low-speed large-torque electric spindle

Abstract

The utility model relates to the technical field of motorized spindle connection, and discloses a low-speed large-torque motorized spindle heavy load buffer connection structure which comprises a motorized spindle, a connection shaft and a cross-shaped insertion block, a cross-shaped insertion groove is formed in one side of the motorized spindle, the cross-shaped insertion block and the connection shaft are integrally designed, and the motorized spindle is connected with the connection shaft in an inserted mode. Buffering mechanisms are designed at the two ends of the four right angles of the cross-shaped inserting block. According to the utility model, firstly, the cross-shaped slot is designed at one end of the electric spindle, the cross-shaped insertion block is designed at one end of the connecting shaft, and the damping rods, the springs and the buffer balls are designed at the two ends of each right angle of the cross-shaped insertion block, so that when the cross-shaped insertion block is subjected to torque force, the buffer balls are pressed into the accommodating grooves; and through the matching design of the spring and the damping rod, the cross-shaped inserting block in the process can be buffered, the situation that abrasion occurs due to collision between the cross-shaped inserting block and the cross-shaped inserting groove is reduced, and the service life of the workpiece is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric spindle connection technology, and in particular to a heavy-duty buffer connection structure for low-speed, high-torque electric spindles. Background Technology

[0002] The low-speed, high-torque electric spindle heavy-duty connection structure is a key functional component of an electric spindle system used under low-speed, high-torque conditions. Its main function is to connect the electric spindle to the load (such as a tool or worktable). In modern industrial machining, especially for machining large and heavy workpieces, low-speed, high-torque electric spindles play a crucial role.

[0003] However, these electric spindles are subjected to huge impact forces and torque fluctuations under heavy load conditions, and traditional connection structures mostly lack buffer structures, which can easily lead to wear and breakage at the connection end.

[0004] Therefore, those skilled in the art have provided a low-speed, high-torque electric spindle heavy-duty buffer connection structure 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 and provide a heavy-duty buffer connection structure for low-speed, high-torque electric spindles. Firstly, a cross slot is designed at one end of the electric spindle, and a cross block is designed at one end of the connecting shaft. Each right angle of the cross block is equipped with a damping rod, a spring, and a buffer ball. When the cross block is subjected to torque, the buffer ball is pressed into the receiving groove. The combination of the spring and damping rod buffers the cross block during this process, reducing wear caused by collisions between the cross block and the cross slot, and improving the service life of the workpiece.

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

[0007] A low-speed, high-torque electric spindle heavy-duty buffer connection structure includes an electric spindle, a connecting shaft, and a cross-shaped insert. A cross-shaped slot is provided on one side of the electric spindle. The cross-shaped insert and the connecting shaft are designed as an integral unit. The electric spindle and the connecting shaft are inserted into each other. Buffer mechanisms are designed at both ends of the four right angles of the cross-shaped insert.

[0008] The buffer mechanism includes a storage slot, a damping rod, a spring, and a buffer ball. The four right-angle ends of the cross-shaped insert are provided with storage slots. Each storage slot is designed with a damping rod inside. Each damping rod has a buffer ball at its output end. Each damping rod has a spring sleeved on its outer end. One end of each buffer ball extends out of the side of the cross-shaped insert.

[0009] The above technical solution firstly involves designing a cross slot at one end of the electric spindle and a cross insert at one end of the connecting shaft. Each right angle of the cross insert is equipped with a damping rod, a spring, and a buffer ball. When the cross insert is subjected to torque, the buffer ball will be pressed into the receiving groove. The combination of the spring and damping rod can buffer the cross insert during the process, reducing wear caused by collision between the cross insert and the cross slot, and improving the service life of the workpiece.

[0010] Furthermore, both ends of the connecting shaft are integrally provided with a front-end fixing plate, and a front-end damping rubber and a middle damping rubber are sequentially bonded inside each front-end fixing plate; both ends of the electric spindle are integrally provided with a rear-end fixing plate.

[0011] Through the above technical solution, front damping rubber and middle damping rubber are sequentially glued inside each front fixing plate, which facilitates the connecting rod to make slight movements inside the front fixing plate. The design of the front fixing plate and the rear fixing plate facilitates the installation of the connecting rod.

[0012] Furthermore, a connecting rod is inserted between the front fixing plate and the rear fixing plate on the same side, and one end of each connecting rod is designed with a thread, and a locking bolt is threaded onto the threaded end of each connecting rod;

[0013] Through the above technical solution, a connecting rod is inserted between the front end fixing plate and the rear end fixing plate on the same side. One end of each connecting rod is designed with a thread, and a locking bolt is threaded onto the threaded end of each connecting rod to facilitate the connection and fixation of the electric spindle and the connecting shaft.

[0014] Furthermore, rear damping rubber is adhered to the interior of both rear end fixing plates;

[0015] Through the above technical solution, rear damping rubber is glued inside both rear fixing plates to facilitate slight compression and buffering at the connection between the rear fixing plates and the connecting rod.

[0016] Furthermore, the dimensions of the cross-shaped slot are slightly larger than the dimensions of the cross-shaped insert.

[0017] With the above technical solution, the size of the cross slot is slightly larger than the size of the cross insert, which facilitates the cross insert to make slight movements after being subjected to torque.

[0018] Furthermore, one end of each of the buffer balls is tightly fitted with a receiving groove at the same location;

[0019] With the above technical solution, one end of each buffer ball is tightly fitted with the storage groove at the same position, thus ensuring the stability of the buffer ball's movement.

[0020] This utility model has the following beneficial effects:

[0021] 1. The low-speed, high-torque electric spindle heavy-duty buffer connection structure proposed in this utility model firstly involves designing a cross slot at one end of the electric spindle and a cross block at one end of the connecting shaft. Each right angle of the cross block is equipped with a damping rod, a spring, and a buffer ball. When the cross block is subjected to torque, the buffer ball will be pressed into the receiving groove. The combination of the spring and damping rod can buffer the cross block during this process, reducing the wear caused by the collision between the cross block and the cross slot, and improving the service life of the workpiece. Attached Figure Description

[0022] Figure 1 This is a schematic diagram showing the unfolded low-speed, high-torque electric spindle heavy-duty buffer connection structure proposed in this utility model.

[0023] Figure 2 This is an isometric view of the low-speed, high-torque electric spindle heavy-duty buffer connection structure proposed in this utility model;

[0024] Figure 3 This is a top sectional view of the low-speed, high-torque electric spindle heavy-duty buffer connection structure proposed in this utility model.

[0025] Figure 4 This is a front sectional view of the low-speed, high-torque electric spindle heavy-duty buffer connection structure proposed in this utility model.

[0026] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Electric spindle; 2. Connecting shaft; 3. Cross slot; 4. Cross insert; 5. Connecting rod; 6. Locking bolt; 7. Storage slot; 8. Damping rod; 9. Spring; 10. Buffer ball; 11. Front damping rubber; 12. Middle damping rubber; 13. Rear damping rubber; 14. Front fixing plate; 15. Rear fixing plate; 16. Buffer mechanism. Detailed Implementation

[0029] 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.

[0030] Reference Figure 1-5This utility model provides a specific embodiment: a low-speed, high-torque electric spindle heavy-duty buffer connection structure, including an electric spindle 1, a connecting shaft 2 and a cross-shaped plug 4. A cross-shaped slot 3 is provided on one side of the electric spindle 1. The cross-shaped plug 4 and the connecting shaft 2 are designed as an integral unit. The electric spindle 1 and the connecting shaft 2 are connected by plugging. Buffer mechanisms 16 are designed at both ends of the four right angles of the cross-shaped plug 4.

[0031] The buffer mechanism 16 includes a receiving groove 7, a damping rod 8, a spring 9, and a buffer ball 10. The four right-angle ends of the cross-shaped insert 4 are provided with receiving grooves 7. Each receiving groove 7 is designed with a damping rod 8 inside. Each output end of the damping rod 8 is provided with a buffer ball 10. Each damping rod 8 is fitted with a spring 9 on its outer end. One end of each buffer ball 10 extends out of the side of the cross-shaped insert 4. First, by designing a cross slot 3 at one end of the electric spindle 1 and a cross-shaped insert 4 at one end of the connecting shaft 2, and designing a damping rod 8, a spring 9, and a buffer ball 10 at each right-angle end of the cross-shaped insert 4, when the cross-shaped insert 4 is subjected to torque, the buffer ball 10 will be pressed into the receiving groove 7. The combination design of the spring 9 and the damping rod 8 can buffer the cross-shaped insert 4 in this process, reduce the wear caused by the collision between the cross-shaped insert 4 and the cross slot 3, and improve the service life of the workpiece.

[0032] Both ends of the connecting shaft 2 are integrally provided with a front-end fixing plate 14. A front-end damping rubber 11 and a middle damping rubber 12 are sequentially bonded inside each front-end fixing plate 14. Both ends of the electric spindle 1 are integrally provided with a rear-end fixing plate 15. A front-end damping rubber 11 and a middle damping rubber 12 are sequentially bonded inside each front-end fixing plate 14, facilitating minor movements of the connecting rod 5 within the front-end fixing plate 14. The design of the front-end fixing plate 14 and the rear-end fixing plate 15 facilitates the installation of the connecting rod 5. A connecting rod 5 is inserted between the front-end fixing plate 14 and the rear-end fixing plate 15 on the same side. One end of each connecting rod 5 is designed with a thread, and a locking bolt 6 is threaded onto the threaded end of each connecting rod 5. A connecting rod 5 is inserted between the front-end fixing plate 14 and the rear-end fixing plate 15 on the same side. One end of each connecting rod 5 is designed with a thread, and each threaded end of each connecting rod 5 is threaded with a locking bolt 6 to facilitate the connection and fixation of the electric spindle 1 and the connecting shaft 2. The interior of each of the two rear end fixing plates 15 is fitted with rear end damping rubber 13 to facilitate slight compression and buffering at the connection between the rear end fixing plate 15 and the connecting rod 5. The size of the cross slot 3 is slightly larger than the size of the cross insert 4 to facilitate slight movement of the cross insert 4 under torque. One end of each buffer ball 10 is tightly fitted with the storage groove 7 at the same position to ensure the stability of the movement of the buffer ball 10.

[0033] Working principle: First, a cross slot 3 is designed at one end of the electric spindle 1, and a cross insert 4 is designed at one end of the connecting shaft 2. Each right angle of the cross insert 4 is equipped with a damping rod 8, a spring 9, and a buffer ball 10. When the cross insert 4 is subjected to torque, the buffer ball 10 is pressed into the receiving groove 7. The combination of the spring 9 and the damping rod 8 buffers the cross insert 4 during this process, reducing wear caused by collisions between the cross insert 4 and the cross slot 3, thus improving the service life of the workpiece. The front fixing plate 14 and the rear fixing plate 1 are located on the same side. A connecting rod 5 is inserted between the two ends of the connecting rod 5. One end of each connecting rod 5 is designed with a thread, and a locking bolt 6 is threaded onto the threaded end of each connecting rod 5 to facilitate the connection and fixation of the electric spindle 1 and the connecting shaft 2. Front damping rubber 11 and middle damping rubber 12 are sequentially glued inside each front fixing plate 14 to facilitate the connecting rod 5 to make slight movements inside the front fixing plate 14. Rear damping rubber 13 is glued inside the two rear fixing plates 15 to facilitate slight compression and buffering at the connection between the rear fixing plate 15 and the connecting rod 5.

[0034] The following points should be noted in this article:

[0035] 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 general design.

[0036] 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.

[0037] 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 low-speed, high-torque electric spindle heavy-duty buffer connection structure, comprising an electric spindle (1), a connecting shaft (2), and a cross-shaped insert (4), characterized in that: The electric spindle (1) has a cross slot (3) on one side. The cross plug (4) and the connecting shaft (2) are designed as a single unit. The electric spindle (1) and the connecting shaft (2) are connected. The four right-angle ends of the cross plug (4) are designed with buffer mechanisms (16). The buffer mechanism (16) includes a storage groove (7), a damping rod (8), a spring (9), and a buffer ball (10). The four right-angle ends of the cross-shaped insert (4) are provided with storage grooves (7). Each storage groove (7) is designed with a damping rod (8) inside. Each damping rod (8) is provided with a buffer ball (10) at its output end. Each damping rod (8) is fitted with a spring (9) at its outer end. One end of each buffer ball (10) extends out of the side of the cross-shaped insert (4).

2. The low-speed, high-torque electric spindle heavy-duty buffer connection structure according to claim 1, characterized in that: Both ends of the connecting shaft (2) are integrally provided with a front end fixing plate (14), and the front end fixing plate (14) is sequentially provided with a front end damping rubber (11) and a middle damping rubber (12). Both ends of the electric spindle (1) are integrally provided with a rear end fixing plate (15).

3. The low-speed, high-torque electric spindle heavy-duty buffer connection structure according to claim 2, characterized in that: A connecting rod (5) is inserted between the front fixing plate (14) and the rear fixing plate (15) on the same side. One end of each connecting rod (5) is designed with a thread, and a locking bolt (6) is threaded onto the threaded end of each connecting rod (5).

4. The low-speed, high-torque electric spindle heavy-duty buffer connection structure according to claim 2, characterized in that: Both of the rear end fixing plates (15) are fitted with rear end damping rubber (13).

5. The low-speed, high-torque electric spindle heavy-duty buffer connection structure according to claim 1, characterized in that: The cross slot (3) is slightly larger than the cross insert (4).

6. The low-speed, high-torque electric spindle heavy-duty buffer connection structure according to claim 1, characterized in that: One end of each of the buffer balls (10) is tightly fitted to the receiving groove (7) at the same location.

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