High-precision air floating rotary table

Abstract

The high-precision air floating rotary table comprises a motor driving support, a frameless motor is arranged on the outer side of the center of the motor driving support, a motor connecting support is arranged on one side of the frameless motor, a bearing frame is arranged at the upper end of the motor connecting support, and a bearing table is arranged at the upper end of the bearing frame; the supporting frame comprises a bottom frame tray, a rotating disc set, a middle rotating base and an upper supporting base, and the rotating disc set is arranged on the upper surface of the bottom frame tray. The motor drives the support and the supporting frame structure, it is guaranteed that the whole equipment has good rigidity and stability, and large loads and centrifugal force can be borne; it is ensured that the equipment does not deviate or deform in the rotating process; the frameless motor can generate strong and accurate torque output, and high power density and response speed are combined to ensure that the rotary table can rotate stably and quickly, so that the requirements of precision machining or measurement are met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air floating rotary tables, in particular to a high-precision air floating rotary table. BACKGROUND

[0002] With the development of industrial production towards high precision and high efficiency, the demand for rotary platforms in the fields of precision machining, measurement and experiment is increasing. Especially in the fields of high-end manufacturing, aerospace, precision testing and scientific research, rotary platforms, as one of the core equipment, undertake important tasks. In order to meet the requirements of high precision and high efficiency in these fields, rotary platforms must have the following key characteristics: high load capacity, low friction, strong stability, high rotation precision, long-time operation reliability, etc. However, the existing air floating rotary tables still have some limitations in practical application, which restricts their wide application in certain fields.

[0003] The existing air floating rotary tables have problems in the distribution and adjustment of air flow. Uneven distribution of gas may cause instability of the air film, which in turn affects the balance and stability of the rotary table. In high load or high precision applications, the unevenness of the air film may cause fluctuations in the rotary process of the rotary table, affecting the working precision and operation safety.

[0004] With the increasing demand for high-load air floating rotary tables, traditional air floating rotary tables cannot provide sufficient buoyancy to support large workpieces or heavy loads, and in long-term high-load operation, problems such as insufficient air flow supply, unstable air film and even system overload may occur, leading to equipment failure or performance degradation. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the existing defects and provide a high-precision air floating rotary table that can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a high-precision air floating rotary table, comprising a motor-driven support, a frameless motor is arranged outside the center of the motor-driven support, a motor connection support is arranged on one side of the frameless motor, a supporting frame is arranged at the upper end of the motor connection support, and a bearing table is arranged at the upper end of the supporting frame.

[0007] The supporting frame comprises a bottom frame tray, a rotating disc group, an intermediate rotating seat and an upper support seat, the rotating disc group is arranged on the upper surface of the bottom frame tray, the rotating disc group is connected with the intermediate rotating seat, the upper end of the rotating disc group is connected with the upper support seat, a rotating assembly is arranged on the inner side of the intermediate rotating seat, air inlet holes and air outlet holes are arranged on the intermediate rotating seat, and the two are arranged on one side of the intermediate rotating seat, floating pads are arranged on one side of the air guide holes of the rotating disc group and the intermediate rotating seat, and a bearing unit is arranged at the upper end of the intermediate rotating seat.

[0008] As a preferred technical scheme of the present application, the buoyancy pad seat is attached to the recess of the intermediate transfer seat and is arranged correspondingly with the rotating disc group, and the air holes are arranged between the buoyancy pad seats and are communicated between the supporting frame and the intermediate transfer seat.

[0009] As a preferred technical scheme of the present application, the bearing unit comprises a rotating table connecting disc and a magnetic rotating disc, the rotating table connecting disc is located above the upper support seat, and the magnetic rotating disc is located above the rotating table connecting disc.

[0010] As a preferred technical scheme of the present application, the upper side of the upper support seat is provided with an upper side waterproof ring, the upper side waterproof ring is in a stepped shape, and the inner diameter of the inner wall thereof is consistent with the outer diameter of the intermediate transfer seat.

[0011] As a preferred technical scheme of the present application, the upper surface of the magnetic rotating disc is provided with anti-skid texture.

[0012] As a preferred technical scheme of the present application, the boss on the outer side of the motor driving support is connected with the supporting frame through a connecting piece.

[0013] Compared with the prior art, the motor driving support and the supporting frame structure of the present application ensure that the overall equipment has good rigidity and stability, can withstand large load and centrifugal force, and ensures that the equipment does not deviate or deform during rotation; the frameless motor can generate strong and accurate torque output, combined with high power density and response speed, to ensure that the rotating table can rotate smoothly and quickly, meeting the requirements of precision machining or measurement; through the buoyancy pad seat and air floating technology, the rotating table can rotate in a nearly frictionless state; not only reduces wear, but also improves the operating efficiency of the system and prolongs the service life of the equipment; the air inlet hole and the air outlet hole on the intermediate transfer seat are designed to make the airflow uniformly distributed to the buoyancy pad seat, providing stable and uniform buoyancy support, maintaining the balance and stability of the magnetic rotating disc during rotation; the magnetic rotating disc attracts metal workpieces through magnetic force, ensuring that the workpieces do not shift or slide during rotation, and the anti-skid texture on the surface of the rotating disc further increases the fixing force of the workpieces, ensuring high precision in the machining process. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present application;

[0015] Figure 2 It is a sectional structural schematic diagram of the present application.

[0016] In the figure: 1 magnetic rotating disc, 2 intermediate transfer seat, 3 rotating table connecting disc, 4 frameless motor, 5 motor driving support, 6 motor connecting support, 7 boss, 8 upper side waterproof ring, 9 rotating assembly, 10 bottom bracket tray, 11 rotating disc group, 12 upper support seat, 13 buoyancy pad seat. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application (for the convenience of description and understanding, the following embodiments are described in the order of Figure 2 from top to bottom). All other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0018] Please refer to Figures 1-2 , the present application provides a technical solution: a high-precision air floating turntable, comprising a motor driving support 5, a frameless motor 4 is arranged on the outer side of the center of the motor driving support 5, a motor connecting support 6 is arranged on one side of the frameless motor 4, a supporting frame is arranged on the upper end of the motor connecting support 6, and a bearing table is arranged on the upper end of the supporting frame.

[0019] The motor driving support 5 is the basic support structure of the whole air floating turntable. The motor driving support 5 not only bears the frameless motor 4, but also bears the weight from the components above and the centrifugal force generated during rotation through its solid structure.

[0020] The frameless motor 4 is installed on the outer side of the center of the motor driving support 5. The frameless motor 4 directly integrates the stator and rotor into the system, reduces the overall volume and improves the efficiency; and provides higher power density and response speed.

[0021] The frameless motor 4 can generate precise and powerful torque output for driving all components on the supporting frame to rotate.

[0022] The motor connecting support 6 is located on one side of the frameless motor 4 and extends upward to the supporting frame, playing a connecting and supporting role. It is responsible for transmitting the rotating force generated by the frameless motor 4 to the supporting frame.

[0023] The supporting frame comprises a bottom rack tray 10, a rotating disc group 11, an intermediate rotating seat 2 and an upper supporting seat 12. The upper surface of the bottom rack tray 10 is provided with the rotating disc group 11, the rotating disc group 11 is connected with the intermediate rotating seat 2, the upper end of the rotating disc group 11 is connected with the upper supporting seat 12, and the inner side of the intermediate rotating seat 2 is provided with a rotating assembly 9.

[0024] The bottom rack tray 10 is the basic part of the supporting frame, which has sufficient rigidity and stability. The upper surface of the bottom rack tray 10 is flat and smooth, facilitating the stable rotation of the rotating disc group 11 thereon.

[0025] The rotating disc group 11 is installed on the bottom bracket tray 10 and is precisely machined to ensure good cooperation with the intermediate rotating seat 2. It is responsible for transmitting the rotating force generated by the frameless motor 4 to the upper bearing unit, and undertakes the task of distributing weight and maintaining balance. The rotating disc group 11 reduces wear during movement and improves operating efficiency.

[0026] The intermediate rotating seat 2 is located between the rotating disc group 11 and the upper support seat 12, and the inner side is provided with a rotating assembly 9 for realizing efficient and stable rotating movement. The air inlet hole and the air outlet hole on the intermediate rotating seat 2 and the air guide hole ensure that the gas can be uniformly distributed to the buoyancy pad 13 of the air floating system, generating the necessary buoyancy to support the rotating table.

[0027] The upper support seat 12 is located at the top of the bearing bracket and directly supports the bearing unit. The connection between the upper support seat 12 and the rotating disc group 11 must be firm and reliable to ensure that there is no loosening or deviation phenomenon during the entire rotation process.

[0028] The intermediate rotating seat 2 is provided with an air inlet hole and an air outlet hole, which are located on one side of the intermediate rotating seat 2. The rotating disc group 11 and the air guide hole of the intermediate rotating seat 2 are both provided with a buoyancy pad 13 on one side. The upper end of the intermediate rotating seat 2 is provided with a bearing unit.

[0029] The air inlet hole on the intermediate rotating seat 2 is used to introduce compressed gas, which is uniformly distributed to various parts of the device, ensuring that the airflow can be smoothly and effectively transmitted to the bearing unit; the air outlet hole on the other side is used to exhaust excess gas or adjust the air pressure, which can adjust the internal gas flow or pressure, adapt to the external weight, maintain the air pressure balance in the system, and avoid affecting the air floating effect due to excessive or insufficient pressure.

[0030] The buoyancy pad 13 forms a thin air cushion at the bottom of the rotating table by receiving compressed gas from the air guide hole, allowing the bearing unit to rotate in a nearly frictionless state.

[0031] Further, the buoyancy pad 13 is attached to the lower surface of the bearing bracket, and the buoyancy pad 13 is provided with air holes between them, which are connected between the bearing bracket and the intermediate rotating seat 2.

[0032] The buoyancy pad 13 has a small air hole to allow gas to flow out smoothly and form a stable buoyancy layer on its surface; the buoyancy pad 13 forms a uniformly distributed air film between its contact surface, which provides sufficient buoyancy to float above the contact surface, reducing physical contact and achieving low-friction or even frictionless rotating movement.

[0033] Further, the bearing unit includes a rotating table connecting disc 3 and a magnetic rotating disc 1, the rotating table connecting disc 3 is located above the upper support seat 12, and the magnetic rotating disc 1 is located above the rotating table connecting disc 3.

[0034] The turntable connecting plate 3 plays a role of connection and transmission, and finally transmits the power from the frameless motor 4 to the magnetic rotating disc 1 through the supporting frame. The turntable connecting plate 3 maintains good concentricity with the magnetic rotating disc 1.

[0035] The magnetic rotating disc 1 directly contacts the workpiece or load, and it uses the magnetic field to attract metal workpieces or other magnetic objects, ensuring that they do not slide or shift during rotation.

[0036] Further, the outer side of the upper support seat 12 is provided with an upper waterproof ring 8, which is step-shaped, and the inner diameter of the inner wall thereof is consistent with the outer diameter of the intermediate rotating seat 2.

[0037] The upper waterproof ring 8 is arranged on the outer side of the upper support seat 12 and forms a sealing ring around it. The inner diameter of the inner wall of the upper waterproof ring 8 is consistent with the outer diameter of the intermediate rotating seat 2, ensuring a tight fit therebetween. A good sealing effect is provided, effectively preventing external moisture and impurities from entering the system.

[0038] Further, the upper surface of the magnetic rotating disc 1 is provided with anti-skid texture.

[0039] The anti-skid texture provides additional friction on the surface of the magnetic rotating disc 1, preventing the workpiece from sliding or shifting during rotation. The anti-skid texture ensures that objects placed thereon can obtain additional friction.

[0040] Further, the boss 7 on the outer side of the motor driving bracket 5 is connected to the supporting frame through a connecting piece.

[0041] In use: the workpiece to be processed or measured is directly placed on the magnetic rotating disc 1 with anti-skid texture, and the metal workpiece is fixed by magnetic force; for non-magnetic materials, a clamp or other auxiliary fixing device can be considered for use in cooperation with the anti-skid texture; open the gas source valve, make the external compressed gas enter the intermediate rotating seat 2 through the air inlet hole, then pass through the air guide hole to the buoyancy pad 13, and finally flow out from the air outlet hole, forming a stable gas film at the bottom of the magnetic rotating disc 1; send a start command to the frameless motor 4 through the control system, so that it starts to rotate and transmits power to the components on the supporting frame. At this time, the magnetic rotating disc 1 will rotate smoothly in the air floating state; according to actual needs, the user can adjust the gas flow or pressure, as well as the speed and direction of the frameless motor 4 through the control system, to obtain the best working state; during the operation of the air floating turntable, closely monitor the indicators of the system, including but not limited to gas pressure, motor speed, rotation stability, etc., to ensure normal operation.

[0042] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary and that changes can be made in detail without departing from the principles and spirit of the application. The scope of the application is therefore defined by the appended claims and their equivalents.

Claims

1. A high-precision air-bearing turntable, comprising a motor drive bracket (5), wherein a frameless motor (4) is disposed on the outer side of the center of the motor drive bracket (5), and a motor connecting bracket (6) is disposed on one side of the frameless motor (4), characterized in that: The upper end of the motor connecting support (6) is provided with a supporting frame, and the upper end of the supporting frame is provided with a bearing table; The supporting frame comprises a bottom frame tray (10), a rotating disc group (11), an intermediate rotating seat (2) and an upper supporting seat (12), the upper surface of the bottom frame tray (10) is provided with the rotating disc group (11), the rotating disc group (11) is connected with the intermediate rotating seat (2), the upper end of the rotating disc group (11) is connected with the upper supporting seat (12), the inner side of the intermediate rotating seat (2) is provided with a rotating assembly (9), the intermediate rotating seat (2) is provided with an air inlet hole and an air outlet hole, which are located on the side of the intermediate rotating seat (2), the side of the air inlet hole and the air outlet hole of the rotating disc group (11) and the intermediate rotating seat (2) is provided with a buoyancy pad (13), and the upper end of the intermediate rotating seat (2) is provided with a bearing unit.

2. The high-precision air floating turntable according to claim 1, characterized in that: The buoyancy pad (13) is attached to the groove of the intermediate rotating seat (2) and is correspondingly arranged with the rotating disc group (11), the buoyancy pad (13) is provided with a ventilation hole, and the ventilation hole is communicated between the supporting frame and the intermediate rotating seat (2).

3. The high-precision air-floating turntable according to claim 1, characterized in that: The bearing unit comprises a rotating table connecting disc (3) and a magnetic rotating disc (1), the rotating table connecting disc (3) is located above the upper supporting seat (12), and the magnetic rotating disc (1) is located above the rotating table connecting disc (3).

4. The high-precision air floating turntable according to claim 1, characterized in that: The outer side of the upper supporting seat (12) is provided with an upper waterproof ring (8), the upper waterproof ring (8) is in a stepped shape, the inner diameter of the inner wall of the upper waterproof ring (8) is consistent with the outer diameter of the intermediate rotating seat (2).

5. The high-precision air-floating turntable according to claim 3, characterized in that: The upper surface of the magnetic rotating disc (1) is provided with anti-skid texture.

6. The high-precision air floating turntable according to claim 1, characterized in that: The boss (7) on the outer side of the motor driving support (5) is connected with the supporting frame through a connecting piece. The upper surface of the magnetic rotating disc (1) is provided with anti-skid texture.

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