A compact rotary table and spindle integrated structure

Abstract

The utility model relates to a compact rotary table and main shaft integrated structure. The utility model discloses a rotary table seat, the inner hole of rotary table seat is provided with the shaft sleeve, is provided with the gas guide hole on the shaft sleeve, the rotary table is connected in the inner hole of rotary table seat through the shaft sleeve, the main shaft is connected in the inner hole of the shaft sleeve, the gas guide slip ring is installed on the rotary table seat, the shaft sleeve enters the inner hole of the gas guide slip ring, the gas guide slip ring is provided with the air passage groove that supplies compressed air to pass in, wherein, the shaft sleeve can communicate with the air passage groove when revolving or static state, still be provided with the air passage that communicates with the gas guide hole and the air outlet that communicates with the air passage on the shaft sleeve. The high -speed rotation's main shaft and rotary table are integrated into an organic whole, and the overall size of super fine head is effectively reduced, and the space utilization of machine tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool equipment technology, and in particular to a compact rotary table and spindle integrated structure. Background Technology

[0002] Currently, large-scale multi-functional ultra-precision machines generally suffer from structural deficiencies. Specifically, the high-speed, continuously rotating mechanical spindle and the low-speed, high-precision angular position control rotary table are mostly separate designs, not yet integrated. Because these two are independently configured, not only is the overall ultra-precision head structure too large, but the machine tool's processing range is also limited, making it difficult to meet the processing needs of various types and specifications of workpieces. Especially in the application scenarios of large-scale multi-functional ultra-precision machines, where workpieces have complex shapes and high precision requirements, if the spindle and rotary table are not compactly integrated, the machine tool will have significant limitations in terms of processing flexibility, space utilization, and processing efficiency, failing to meet the current manufacturing industry's comprehensive requirements for high-efficiency, high-precision, and multi-functional processing. Summary of the Invention

[0003] Therefore, this utility model provides a compact rotary table and spindle integrated structure, which integrates the high-speed rotating spindle and rotary table into one unit, effectively reducing the overall size of the ultra-precision head and improving the space utilization of the machine tool.

[0004] To solve the above-mentioned technical problems, this utility model provides a compact rotary table and spindle integrated structure, comprising: A turntable base, wherein a bushing is provided in the inner hole of the turntable base, and an air guide hole is provided on the bushing; The turntable is rotatably connected to the inner hole of the turntable base via the bushing; The main shaft is rotatably connected to the inner hole of the bushing; An air guide slip ring is installed on the turntable base. The bushing extends into the inner hole of the air guide slip ring. The air guide slip ring has an air groove for compressed air to pass through. When the bushing is in a rotating or stationary state, the air guide hole can communicate with the air groove. The bushing is also provided with an air passage communicating with the air guide hole and an air outlet communicating with the air passage.

[0005] In one embodiment of this utility model, a bearing assembly is provided between the spindle and the inner hole of the bushing.

[0006] In one embodiment of this utility model, a rotary drive mechanism is further included. The drive mechanism includes a first driving synchronous pulley, a first driven synchronous pulley, a first synchronous belt, and a main shaft drive motor. The first synchronous belt is installed between the first driving synchronous pulley and the first driven synchronous pulley. The first driven synchronous pulley is connected to the end of the main shaft. The first driving synchronous pulley is installed at the output end of the main shaft drive motor.

[0007] In one embodiment of this utility model, an angle positioning mechanism is further included. The angle positioning mechanism includes a second active synchronous pulley, a second driven synchronous pulley, a second synchronous belt, and an encoder. A bushing end cover is installed at the end of the bushing. The second synchronous belt is installed between the second active synchronous pulley and the second driven synchronous pulley. The second active synchronous pulley is connected to the bushing end cover, and the second driven synchronous pulley is installed on the encoder.

[0008] In one embodiment of this utility model, a base is also included, the turntable base is connected to the base, and the encoder is rotatably mounted on the base.

[0009] In one embodiment of this utility model, the air guide slip ring is provided with rotary sealing rings that contact the outer wall of the bushing on both sides of the air groove.

[0010] In one embodiment of this utility model, the venting groove is annular, and the air guide slip ring has an air inlet communicating with the venting groove.

[0011] In one embodiment of this utility model, the air passage extends axially along the bushing.

[0012] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art: The present invention discloses a compact rotary table and spindle integrated structure, which integrates a high-speed rotating spindle and a low-speed, high-precision rotary table into one unit. This breaks through the traditional separate arrangement of the spindle and rotary table, significantly reduces the overall size of the machine tool's ultra-precision head, improves space utilization, and enables large-scale multi-functional ultra-precision equipment to achieve more processing functions within a limited installation space.

[0013] This invention incorporates an air passage within the bushing, ensuring unobstructed airflow even during turntable rotation and preventing airflow interruption caused by rotation.

[0014] The spindle of this invention achieves high-speed rotation via a first synchronous belt drive and a servo motor, while the turntable achieves high-precision low-speed angle positioning using an angle positioning mechanism and an encoder. Both can operate independently or simultaneously, achieving compatibility between high-speed cutting and high-precision positioning, thus improving machining flexibility. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0016] Figure 1This is a front view schematic diagram of the compact turntable and spindle integrated structure of this utility model.

[0017] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0018] Figure 3 This is a side view of the integrated structure of the compact turntable and spindle of this utility model.

[0019] Explanation of reference numerals in the instruction manual: 1. Base; 2. Main spindle drive motor; 3. First active synchronous pulley; 4. Turntable; 5. First synchronous belt; 6. Turntable base; 7. Bushing; 8. Bushing end cover; 9. Main spindle; 10. First driven synchronous pulley; 11. Large synchronous pulley; 12. Encoder; 13. Second driven synchronous pulley; 14. Second synchronous belt; 15. Bearing assembly; 16. Air guide slip ring; 17. Rotary sealing ring; 18. Air guide hole; 19. Air groove; 20. Air outlet; 21. Air inlet. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0021] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0022] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0023] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0024] Reference Figures 1 to 3 As shown, the present invention provides a compact integrated structure of a rotary table 4 and a spindle 9, comprising: A turntable base 6, wherein a bushing 7 is provided in the inner hole of the turntable base 6, and an air guide hole 18 is provided on the bushing 7; Turntable 4 is rotatably connected to the inner hole of turntable base 6 via bushing 7; The main shaft 9 is rotatably connected to the inner hole of the bushing 7; An air guide slip ring 16 is installed on the turntable base 6 (which can be fixed by screws). The bushing 7 extends into the inner hole of the air guide slip ring 16. The air guide slip ring 16 has an air groove 19 for compressed air to pass through. When the bushing 7 is rotating or stationary, the air guide hole 18 can communicate with the air groove 19 (the end faces of the air groove 19 and the air guide hole 18 are radially opposite to each other). The bushing 7 is also provided with an air passage communicating with the air guide hole 18 and an air outlet 20 communicating with the air passage.

[0025] By integrating the high-speed rotating spindle 9 and the low-speed, high-precision rotary table 4 into one unit, the overall size of the machine tool's ultra-precision head is significantly reduced, improving space utilization and enabling large, multi-functional ultra-precision equipment to perform more processing functions within a limited installation space. Furthermore, an air passage is designed inside the bushing 7, with a fixed air guide ring 16, ensuring unobstructed airflow even during the rotation of the rotary table 4, preventing airflow interruptions caused by rotation.

[0026] In one embodiment, a bearing assembly 15 is provided between the spindle 9 and the inner hole of the bushing 7, which improves the rotational accuracy and operational stability of the spindle 9.

[0027] In one embodiment, a rotary drive mechanism is further included, comprising a first driving synchronous pulley 3, a first driven synchronous pulley 10, a first synchronous belt 5, and a spindle drive motor 2. The first synchronous belt 5 is installed between the first driving synchronous pulley 3 and the first driven synchronous pulley 10. The first driven synchronous pulley 10 is connected to the end of the spindle 9 and fixed with a tensioning sleeve. The first driving synchronous pulley 3 is installed at the output end of the spindle drive motor 2. The spindle drive motor 2 is a servo motor.

[0028] In one embodiment, an angle positioning mechanism is further included, which includes a second active synchronous pulley, a second driven synchronous pulley 13, a second synchronous belt 14, and an encoder 12. A bushing end cover 8 is installed at the end of the bushing 7. The second synchronous belt 14 is installed between the second active synchronous pulley and the second driven synchronous pulley 13. The second active synchronous pulley is connected to the bushing end cover 8, and the second driven synchronous pulley 13 is installed on the encoder 12.

[0029] It is understood that the turntable 4 is rotatably mounted within the turntable base 6 via the bushing 7, and its angle positioning is achieved by an angle positioning mechanism. Specifically, the end of the bushing 7 is connected to the second active synchronous belt pulley 14 via the bushing end cover 8, driving the second synchronous belt, which then transmits the power to the second driven synchronous belt pulley 13, ultimately driving the encoder 12. The encoder 12 detects the angle of the turntable 4 in real time, achieving high-precision angle control of the turntable 4.

[0030] It should be noted that the rotation of the rotary table 4 is powered by the rotary table base 6. The rotary table base 6 and the rotary table 4 can be coupled by a worm gear, for example, using the structure of the existing TK13315E2 series CNC vertical and horizontal rotary tables.

[0031] In one embodiment, the system further includes a base 1, with the turntable base 6 connected to the base 1, and the encoder 12 rotatably mounted on the base 1. Furthermore, all functional components (spindle drive motor 2, encoder 12, air guide slip ring 16, etc.) are compactly mounted on the base 1 or turntable base 6, making assembly convenient and maintenance and replacement easy.

[0032] In one embodiment, the air guide slip ring 16 is provided with rotary sealing rings 17 on both sides of the vent groove 19, which contact the outer wall of the bushing 7. Furthermore, the vent groove 19 is annular, maintaining radial alignment with the air guide hole 18. The air guide slip ring 16 has an air inlet 21 communicating with the vent groove 19, and the air passage extends axially along the bushing 7. The rotary sealing rings 17 on both sides of the vent groove 19 contact the outer wall of the bushing 7, ensuring no gas leakage during the rotation of the turntable 4 and ensuring that the air passage remains unobstructed during rotation.

[0033] During operation, the spindle drive motor 2 drives the spindle 9 to rotate at high speed via the first synchronous belt 5, while the turntable 4 rotates at low speed using the encoder 12 to achieve high-precision positioning of the angle. The high-speed rotation of the spindle 9 and the low-speed rotation of the turntable 4 can be performed simultaneously or independently. An internal air passage is designed so that compressed air enters the ventilation groove 19 inside the air guide ring 16 through the air inlet 21. Rotary sealing rings 17 on both sides of the ventilation groove 19 prevent leakage. The compressed air is guided along the ventilation groove 19 into the air hole and then to the air outlet 20. As the bushing 7 rotates with the turntable 4, the air guide hole 18 on the bushing 7 remains connected to the ventilation groove 19, ensuring unobstructed airflow during the rotation of the turntable 4 and maintaining a compact structure.

[0034] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A compact rotary table and spindle integrated structure, characterized in that, include: Turntable base (6), a bushing (7) is provided in the inner hole of the turntable base (6), and an air guide hole (18) is provided on the bushing (7). The turntable (4) is rotatably connected to the inner hole of the turntable base (6) via the bushing (7); The main shaft (9) is rotatably connected to the inner hole of the bushing (7); An air guide slip ring (16) is installed on the turntable base (6), and the bushing (7) extends into the inner hole of the air guide slip ring (16). The air guide slip ring (16) has an air groove (19) for compressed air to pass through. When the bushing (7) is in a rotating or stationary state, the air guide hole (18) can communicate with the air groove (19). The bushing (7) is also provided with an air passage communicating with the air guide hole (18) and an air outlet (20) communicating with the air passage.

2. The compact rotary table and spindle integrated structure according to claim 1, characterized in that, A bearing assembly (15) is provided between the main shaft (9) and the inner hole of the bushing (7).

3. The compact rotary table and spindle integrated structure according to claim 1, characterized in that, It also includes a rotary drive mechanism, which includes a first active synchronous pulley (3), a first driven synchronous pulley (10), a first synchronous belt (5), and a main shaft drive motor (2); wherein, the first synchronous belt (5) is installed between the first active synchronous pulley (3) and the first driven synchronous pulley (10), the first driven synchronous pulley (10) is connected to the end of the main shaft (9), and the first active synchronous pulley (3) is installed at the output end of the main shaft drive motor (2).

4. The compact rotary table and spindle integrated structure according to claim 1, characterized in that, It also includes an angle positioning mechanism, which includes a second active synchronous pulley, a second driven synchronous pulley (13), a second synchronous belt (14), and an encoder (12). The bushing (7) is equipped with a bushing end cover (8). The second synchronous belt (14) is installed between the second active synchronous pulley and the second driven synchronous pulley (13). The second active synchronous pulley is connected to the bushing end cover (8), and the second driven synchronous pulley (13) is installed on the encoder (12).

5. The compact rotary table and spindle integrated structure according to claim 4, characterized in that, It also includes a base (1), the turntable base (6) is connected to the base (1), and the encoder (12) is rotatably mounted on the base (1).

6. The compact rotary table and spindle integrated structure according to claim 1, characterized in that, The air guide slip ring (16) is provided with a rotary sealing ring (17) on both sides of the air groove (19) that contacts the outer wall of the bushing (7).

7. The compact rotary table and spindle integrated structure according to claim 1, characterized in that, The ventilation groove (19) is annular, and the air guide slip ring (16) has an air inlet (21) that communicates with the ventilation groove (19).

8. The compact rotary table and spindle integrated structure according to claim 1, characterized in that, The air passage extends axially along the bushing (7).

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