High-speed precise direct-drive rotating platform

Abstract

The invention provides a high-speed precise direct-drive rotating platform. The high-speed precise direct-drive rotating platform comprises a box body, a main shaft, a flange plate, a motor stator, a motor rotor and a bearing, a bearing is arranged at the front end of the box body, and the motor stator is installed on the inner side of the box body. The motor rotor is arranged in the motor stator in a penetrating mode, and the main shaft is installed in the motor rotor. The front end of the main shaft is arranged on the bearing in a penetrating manner; a flange plate is also arranged at the front end of the main shaft; the flange plate is further provided with a circle of waterproof cover, and the waterproof cover rotates along with the flange plate and is used for preventing water. The high-speed precise direct-drive rotating platform integrates high precision, high rotating speed, good heat dissipation, excellent waterproof performance and strong braking capacity, and the quality and efficiency of precise machining are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of precision machining equipment, and in particular to a high-speed precision direct-drive rotating platform. Background Art

[0002] With the development of modern industrial technology, higher requirements are placed on the accuracy, speed and stability of mechanical equipment; especially in the field of precision machining, high-speed precision direct-drive rotary platforms have become the focus of research and development because they can provide higher machining accuracy and efficiency; such platforms are usually composed of core components such as a housing, a spindle, a flange, a motor stator, a motor rotor, and bearings. The motor directly drives the spindle to rotate, reducing the intermediate transmission links and improving the transmission efficiency and response speed.

[0003] Deficiencies of existing technology: 1. Poor waterproof performance: During the processing, especially when the use of coolant is involved, the existing turntable’s waterproof ability is insufficient, which can easily cause damage to the internal electrical components.

[0004] 2. Poor heat dissipation: During high-speed operation, the motor and bearings will generate a lot of heat. Poor heat dissipation will cause the temperature to rise, which will affect the stability and service life of the equipment.

[0005] 3. Weak braking ability: The existing braking system is not efficient when stopping quickly and cannot stop the spindle quickly and effectively, affecting processing efficiency and safety.

[0006] Therefore, the prior art has deficiencies and needs further improvement. Summary of the invention

[0007] In view of the problems existing in the prior art, the present invention provides a high-speed precision direct-drive rotating platform.

[0008] To achieve the above object, the specific scheme of the present invention is as follows: The present invention provides a high-speed precision direct-drive rotating platform, comprising: Box body, main shaft, flange, motor stator, motor rotor, bearings; A bearing is provided at the front end of the box, and the motor stator is installed on the inner side of the box; The motor rotor is inserted into the motor stator, and the main shaft is installed in the motor rotor; The front end of the main shaft is passed through the bearing, and a flange is also provided at the front end of the main shaft; The flange is also provided with a circle of waterproof cover, which rotates with the flange for waterproofing.

[0009] Furthermore, a plurality of partition grooves are provided on the inner side of the waterproof cover for waterproofing.

[0010] Furthermore, an upper waterproof sheet is provided on the side of the flange facing the box body, and a lower waterproof sheet is provided on the box body at a position corresponding to the upper waterproof sheet; The upper waterproof sheet and the lower waterproof sheet are meshed with each other.

[0011] Furthermore, a lower end cover is also provided at the rear of the box body.

[0012] Furthermore, the outer wall of the stator is provided with a plurality of annular grooves, and the annular grooves and the inner wall of the box body form channels, and the annular grooves are used for filling water for cooling.

[0013] Furthermore, an encoder rotor seat is provided at the tail of the main shaft, and an encoder rotor is provided on the encoder rotor seat; An encoder stator seat is also installed at the tail of the box body, and an encoder stator is also arranged at a position on the encoder stator seat corresponding to the encoder rotor.

[0014] Furthermore, a thin sheet-encircling outer ring is provided between the rotor and the main shaft, and a thin sheet-encircling inner ring is provided between the thin sheet-encircling outer ring and the main shaft; An oil cavity is provided between the thin slice surrounding outer ring and the thin slice surrounding inner ring; The thin-sheet-encircled outer ring and the thin-sheet-encircled inner ring are both mounted on the encoder stator seat; The oil cavity is filled with oil to squeeze the thin sheet to embrace the inner ring to generate deformation for braking the main shaft.

[0015] Furthermore, the box body is cylindrical.

[0016] Furthermore, the bearing is a bidirectional crossed roller bearing.

[0017] Furthermore, a wire outlet block is provided on the side of the box for wiring.

[0018] The technical solution of the present invention has the following beneficial effects: 1. High-precision processing: The use of bidirectional crossed roller bearings ensures the stability of the spindle during high-speed rotation, reduces vibration and deviation, and improves processing accuracy.

[0019] The use of encoders can monitor the position and speed of the spindle in real time, ensuring high-precision control during the machining process.

[0020] 2. High speed operation: The motor directly drives the spindle, reducing intermediate transmission links, improving transmission efficiency and response speed, supporting higher speeds, and meeting the needs of high-speed machining.

[0021] 3. Efficient heat dissipation: The outer wall of the stator is provided with a number of annular grooves, which form a cooling water channel with the inner wall of the box. By filling water for cooling, the temperature of the motor during operation is effectively reduced, thereby improving the reliability and life of the equipment.

[0022] 4.Excellent waterproof performance: A waterproof cover is arranged on the flange, and a partition groove is arranged inside the waterproof cover, which can effectively prevent the intrusion of cutting fluid.

[0023] An upper waterproof sheet and a lower waterproof sheet are arranged between the flange and the box body, and the two mesh with each other to form a multi-level non-contact waterproof system to further enhance the waterproof effect.

[0024] 5. Powerful braking capability: A thin sheet is arranged between the main shaft and the encoder rotor seat to embrace the outer ring and the inner ring. After the oil cavity is filled with oil, the inner ring is squeezed to produce deformation, which quickly and effectively brakes the main shaft to ensure the safety and efficiency of operation.

[0025] 6. Compact structure: The box is designed in a cylindrical shape with a compact structure, small footprint, and easy installation and maintenance.

[0026] The thin-film wraparound brake system is embedded inside the motor, which not only increases the braking area but also saves internal space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a stereogram of the present invention; Figure 2 It is a stereogram of another viewing angle of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 The waterproof part of the present invention has an enlarged view; Figure 5 The cooling part of the present invention has an enlarged view; Figure 6 The brake part of the present invention has an enlarged view; In the figure: 1. Flange; 2. Spindle; 3. Bearing; 4. Upper waterproof sheet; 5. Lower waterproof sheet; 6. Waterproof cover; 7. Box; 8. Motor stator; 9. Motor rotor; 10. Wire block; 11. Thin sheet surrounding the outer ring; 12. Thin sheet surrounding the inner ring; 13. Encoder stator seat; 14. Encoder rotor seat; 15. Encoder rotor; 16. Encoder stator; 17. Lower end cover; 18. Partition groove; 19. Annular groove; 20. Oil chamber. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; it can be understood that the specific embodiments described herein are only used to explain the present invention rather than to limit the present invention; it should also be noted that, for ease of description, only the parts related to the present invention rather than all are shown in the accompanying drawings.

[0029] Combination Figure 1-Figure 6 As shown, the present invention provides a high-speed precision direct-drive rotating platform, comprising: a box 7, a spindle 2, a flange 1, a motor stator 8, a motor rotor 9, and a bearing 3; The front end of the box body 7 is provided with a bearing 3, and the motor stator 8 is installed on the inner side of the box body 7; The motor rotor 9 is inserted into the motor stator 8, and the main shaft 2 is installed in the motor rotor 9; The front end of the main shaft 2 is passed through the bearing 3, and the front end of the main shaft 2 is also provided with a flange 1; The flange 1 is also provided with a circle of waterproof cover 6, which rotates with the flange 1 for waterproofing.

[0030] The inner side of the waterproof cover 6 is also provided with a plurality of partition grooves 18 for waterproofing.

[0031] An upper waterproof sheet 4 is also provided on the side of the flange 1 facing the box body 7, and a lower waterproof sheet 5 is also provided on the box body 7 at a position corresponding to the upper waterproof sheet 4; The upper waterproof sheet 4 and the lower waterproof sheet 5 are meshed with each other.

[0032] A lower end cover 17 is also provided at the rear of the box body 7 .

[0033] The outer wall of the stator is provided with a plurality of annular grooves 19 , and the annular grooves 19 and the inner wall of the box body 7 form channels, and the annular grooves 19 are used for filling water for cooling.

[0034] The tail of the spindle 2 is also provided with an encoder rotor 15 seat 14, on which an encoder rotor 15 is provided; An encoder stator 16 seat 13 is also installed at the tail of the box body 7 , and an encoder stator 16 is also arranged at a position on the encoder stator 16 seat 13 corresponding to the encoder rotor 15 .

[0035] A thin sheet-encircling outer ring 11 is further provided between the rotor and the main shaft 2, and a thin sheet-encircling inner ring 12 is further provided between the thin sheet-encircling outer ring 11 and the main shaft 2; An oil cavity 20 is provided between the thin sheet surrounding outer ring 11 and the thin sheet surrounding inner ring 12; The thin sheet surrounding outer ring 11 and the thin sheet surrounding inner ring 12 are both mounted on the encoder stator 16 seat 13; The oil cavity 20 is filled with oil to squeeze the thin sheet to embrace the inner ring 12 to generate deformation for braking the main shaft 2.

[0036] The box body 7 is cylindrical.

[0037] The bearing 3 is a bidirectional crossed roller bearing 3 .

[0038] A wire outlet block 10 is also provided on the side of the box body 7 for wiring.

[0039] Working principle: The high-speed precision direct-drive rotary platform of the present invention mainly includes the following key components: Box 7: As the supporting structure of the entire device, the motor stator 8 and other components are installed inside.

[0040] Spindle 2: installed in the motor rotor 9, with the front end supported by the bearing 3 and the rear end connected to the encoder rotor 15 seat 14.

[0041] Flange 1: Installed at the front end of spindle 2 to fix the workpiece.

[0042] Motor stator 8: installed inside the box 7 to generate a magnetic field.

[0043] Motor rotor 9: It is inserted into the motor stator 8, connected to the main shaft 2, and driven to rotate by the magnetic field.

[0044] Bearing 3: installed at the front end of the box 7, supporting the main shaft 2 and ensuring its smooth rotation.

[0045] Waterproof cover 6: installed on flange 1, rotates with flange 1 to prevent cutting fluid from entering.

[0046] The upper waterproof sheet 4 and the lower waterproof sheet 5 are respectively installed on the flange 1 and the box body 7, meshing with each other to form a multi-level non-contact waterproof system.

[0047] Liquid cooling system: The outer wall of the motor stator 8 is provided with an annular groove 19, which forms a cooling water channel with the inner wall of the box body 7 for heat dissipation.

[0048] Encoder: Installed at the tail of spindle 2, used to detect the position and speed of spindle 2.

[0049] Thin-film encircling brake system: installed on encoder stator 16 seat 13, used for rapid braking of spindle 2.

[0050] 2. Working process Start and rotate: When the system is powered on, the motor stator 8 generates a rotating magnetic field, driving the motor rotor 9 to rotate.

[0051] The rotation of the motor rotor 9 drives the main shaft 2 to rotate, and the flange 1 at the front end of the main shaft 2 also rotates accordingly.

[0052] The waterproof cover 6 on the flange 1 rotates together with the flange 1 to prevent cutting fluid from entering the interior.

[0053] Waterproof mechanism: Waterproof cover 6: A plurality of partition grooves 18 are arranged inside the waterproof cover 6, and these partition grooves 18 can effectively block the entry of cutting fluid.

[0054] Multi-level non-contact waterproof system: The upper waterproof sheet 4 on the flange 1 and the lower waterproof sheet 5 on the box body 7 engage with each other to form a multi-level waterproof barrier to further enhance the waterproof effect.

[0055] Heat dissipation mechanism: Liquid cooling system: The outer wall of the motor stator 8 is provided with a plurality of annular grooves 19, and the annular grooves 19 and the inner wall of the box body 7 form cooling water channels. The cooling water flows through these channels to take away the heat generated when the motor is working, ensuring the stability of the motor temperature.

[0056] Position and speed detection: Encoder: The encoder rotor 15 seat 14 at the tail of the spindle 2 is equipped with an encoder rotor 15, and the encoder stator 16 is installed at the tail of the box 7. The encoder can detect the position and speed of the spindle 2 in real time to ensure accurate control of the machining process.

[0057] Braking mechanism: Thin-sheet embracing brake system: When the main shaft 2 needs to be stopped, the oil chamber 20 is filled with oil, squeezing the thin-sheet embracing inner ring 12 to deform it and tightly embrace the main shaft 2 to achieve rapid braking. After the braking is completed, the oil chamber 20 is drained, the thin-sheet embracing inner ring 12 returns to its original state, and the main shaft 2 regains the ability to rotate freely.

[0058] 3. Conclusion The high-speed precision direct-drive rotary platform of the present invention achieves high precision, high speed, good heat dissipation, excellent waterproof performance and strong braking ability through optimized design. These characteristics make the platform have a wide range of application prospects in the field of precision machining and can significantly improve machining quality and efficiency.

[0059] The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the protection scope of the present invention.

Claims

1. A high-speed precision direct-drive rotary platform, characterized in that: include: Box body, main shaft, flange, motor stator, motor rotor, bearings; A bearing is provided at the front end of the box, and the motor stator is installed on the inner side of the box; The motor rotor is inserted into the motor stator, and the main shaft is installed in the motor rotor; The front end of the main shaft is passed through the bearing, and a flange is also provided at the front end of the main shaft; The flange is also provided with a circle of waterproof cover, which rotates with the flange for waterproofing.

2. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: The inner side of the waterproof cover is also provided with a plurality of partition grooves for waterproofing.

3. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: An upper waterproof sheet is also provided on the side of the flange facing the box body, and a lower waterproof sheet is also provided on the box body at a position corresponding to the upper waterproof sheet; The upper waterproof sheet and the lower waterproof sheet are meshed with each other.

4. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: The tail of the box body is also provided with a lower end cover.

5. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: The outer wall of the stator is provided with a plurality of annular grooves, and the annular grooves and the inner wall of the box body form channels, and the annular grooves are used for filling water for cooling.

6. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: The tail of the main shaft is also provided with an encoder rotor seat, on which an encoder rotor is provided; An encoder stator seat is also installed at the tail of the box body, and an encoder stator is also arranged at a position on the encoder stator seat corresponding to the encoder rotor.

7. The high-speed precision direct-drive rotary platform according to claim 6, characterized in that: A thin sheet-encircling outer ring is also provided between the rotor and the main shaft, and a thin sheet-encircling inner ring is also provided between the thin sheet-encircling outer ring and the main shaft; An oil cavity is provided between the thin slice surrounding outer ring and the thin slice surrounding inner ring; The thin-sheet-encircled outer ring and the thin-sheet-encircled inner ring are both mounted on the encoder stator seat; The oil cavity is filled with oil to squeeze the thin sheet to embrace the inner ring to generate deformation for braking the main shaft.

8. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: The box body is cylindrical.

9. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: The bearing is a bidirectional crossed roller bearing.

10. The high-speed precision direct-drive rotary platform according to claim 1, characterized in that: The side of the box is also provided with a wire outlet block for wiring.

Images