High-precision and high-rotating-speed electric spindle with sealing rings

Abstract

The utility model relates to a high-precision high-rotating-speed motorized spindle with a sealing ring, which belongs to the technical field of motorized spindles and comprises a shell, a spindle is rotatably mounted in the shell, the sealing ring is fixedly mounted on one side of the shell through a mounting screw, and the spindle is rotatably connected with the sealing ring. A dustproof assembly is fixedly installed on one side of the sealing ring and comprises a dustproof sleeve fixedly installed on one side of the sealing ring, an annular pipe is fixedly installed on the surface of the dustproof sleeve, and a flow guide groove is formed in one end of the dustproof sleeve. According to the high-precision and high-rotating-speed electric spindle with the sealing ring, a dustproof sleeve is arranged on one side of the sealing ring, a flow guide groove is formed in one side of the dustproof sleeve, high-pressure gas is introduced into an annular pipe through an air inlet pipe, enters the flow guide groove through an air outlet pipe, and is blown towards the end, away from the shell, of the spindle under the action of the flow guide groove; and dust is prevented from entering the shell.

Description

Technical Field

[0001] This utility model relates to the field of electric spindle technology, specifically a high-precision, high-speed electric spindle with a sealing ring. Background Technology

[0002] An electric spindle is a new technology in the field of CNC machine tools that integrates the machine tool spindle and spindle motor, featuring high speed, high precision, and low noise. As a power source, its rotor is directly connected to the spindle, providing rotational power. The working principle of an electric spindle is based on the law of electromagnetic induction. When alternating current is applied to the stator windings, a rotating magnetic field is generated. This magnetic field interacts with the induced current in the rotor windings, thereby generating electromagnetic torque, driving the rotor to rotate, and thus driving the spindle to rotate.

[0003] Utility model patent CN205684726U discloses a high-precision, high-speed electric spindle with a sealing ring, comprising a spindle, rotor, stator, inner sleeve, outer sleeve, rear bearing housing, and water inlet. The rotor, stator, inner sleeve, and outer sleeve are sequentially mounted from the inside out on the outer surface of the spindle's middle section. A first front bearing, a second front bearing, and a rear bearing are mounted at the front and rear ends of the spindle, respectively. An outer spacer and an inner spacer are provided between the first and second front bearings. A front balance ring and a rear balance ring are installed at the front and rear ends of the rotor, respectively. A boss is provided at the front end of the spindle, with the second front bearing and the front balance ring respectively mounted on either side of this boss. This utility model effectively prevents dust from entering the front and rear bearings, meeting the requirement of a high spindle speed of up to 24000 r / min. The spindle is equipped with water cooling, with water entering through a rear water inlet and passing through a cooling water groove carved into the outer surface of the inner sleeve, achieving efficient cooling and ensuring high machining precision of the spindle.

[0004] However, this electric spindle relies solely on the sealing ring for dust prevention during operation. The sealing ring is prone to damage at high speeds, leading to seal failure and allowing external dust to easily enter the electric spindle. Therefore, a high-precision, high-speed electric spindle with a sealing ring is proposed to solve the aforementioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-precision, high-speed electric spindle with a sealing ring, which has advantages such as preventing dust from entering the electric spindle. It solves the problem that in common electric spindles, dust prevention relies solely on the sealing ring during operation, and the sealing ring is prone to damage at high speeds, leading to seal failure and allowing external dust to easily enter the electric spindle.

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

[0007] A high-precision, high-speed electric spindle with a sealing ring includes a housing, in which a spindle is rotatably mounted; a sealing ring is fixedly mounted on one side of the housing by mounting screws; the spindle is rotatably connected to the sealing ring; and a dustproof component is fixedly mounted on one side of the sealing ring.

[0008] The dustproof assembly includes a dustproof sleeve fixedly installed on one side of the sealing ring. An annular tube is fixedly installed on the surface of the dustproof sleeve. A guide groove is opened at one end of the dustproof sleeve. An air outlet pipe is fixedly installed on the inner side wall of the dustproof sleeve. The air outlet pipe is connected to the annular tube. An air inlet pipe is fixedly installed on the surface of the annular tube.

[0009] Furthermore, a front bearing is fixedly installed on one side of the housing, and the main shaft is fixedly installed through the inner ring of the front bearing.

[0010] Furthermore, a mounting plate is fixedly installed on one side of the housing, and mounting bolts are passed through one side of the mounting plate.

[0011] Furthermore, a rear cover is fitted onto the surface of the mounting bolt, and a mounting nut is threaded onto the surface of the mounting bolt.

[0012] Furthermore, a rear bearing is fixedly installed on one side of the rear cover, and one end of the main shaft is fixedly connected to the inner ring of the rear bearing.

[0013] Furthermore, a stator is fixedly installed on the inner wall of the housing, and a rotor is fixedly installed on the surface of the main shaft, with the rotor located inside the stator.

[0014] Furthermore, a cooling water tank is fixedly installed on the surface of the housing. The cooling water tank is spirally wrapped around the surface of the housing and aligned with the stator.

[0015] Furthermore, an inlet pipe is fixedly installed at the input end of the cooling water tank, and an outlet pipe is fixedly installed at the output end of the cooling water tank.

[0016] Compared with the prior art, this utility model provides a high-precision, high-speed electric spindle with a sealing ring, which has the following advantages:

[0017] This high-precision, high-speed electric spindle with a sealing ring solves the problem of dust entering the spindle's interior by installing a dustproof sleeve on one side of the sealing ring and opening a guide groove on the other side of the dustproof sleeve. High-pressure gas is introduced into the annular pipe through the air inlet pipe, and the high-pressure gas enters the guide groove through the air outlet pipe. Under the action of the guide groove, the gas is blown towards the end of the spindle away from the housing, preventing dust from entering the housing. This solves the common problem of electric spindles relying solely on the sealing ring for dust prevention during operation, where the sealing ring is easily damaged at high speeds, leading to seal failure and allowing external dust to easily enter the electric spindle. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the structure of this utility model;

[0019] Figure 2 This is a front view of the structure of this utility model;

[0020] Figure 3 This is a front sectional view of the dustproof sleeve of this utility model;

[0021] Figure 4 This is a three-dimensional view of the dustproof sleeve of this utility model.

[0022] In the diagram: 1. Housing; 2. Main shaft; 3. Mounting screw; 4. Sealing ring; 5. Dustproof sleeve; 6. Annular tube; 7. Guide groove; 8. Air outlet pipe; 9. Air inlet pipe; 10. Front bearing; 11. Mounting plate; 12. Mounting bolt; 13. Rear cover; 14. Mounting nut; 15. Rear bearing; 16. Stator; 17. Rotor; 18. Cooling water tank; 19. Water inlet pipe; 20. Water outlet pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 4 This embodiment of a high-precision, high-speed electric spindle with a sealing ring includes a housing 1, a spindle 2 rotatably mounted inside the housing 1, a sealing ring 4 fixedly mounted on one side of the housing 1 by mounting screws 3, the spindle 2 and the sealing ring 4 being rotatably connected, and a dustproof component fixedly mounted on one side of the sealing ring 4.

[0025] The dustproof component includes a dustproof sleeve 5 fixedly installed on one side of the sealing ring 4. An annular tube 6 is fixedly installed on the surface of the dustproof sleeve 5. A guide groove 7 is opened at one end of the dustproof sleeve 5. An air outlet pipe 8 is fixedly installed on the inner wall of the dustproof sleeve 5. The air outlet pipe 8 is connected to the annular tube 6. An air inlet pipe 9 is fixedly installed on the surface of the annular tube 6.

[0026] Specifically, high-pressure gas is introduced into the intake pipe 9, the gas enters the annular pipe 6, and is blown out into the guide groove 7 through the exhaust pipe 8. The guide groove 7 guides the airflow to the surface of the main shaft 2, so that the dust is blown out towards the side of the main shaft 2 away from the housing 1, preventing the dust from entering the interior of the housing 1.

[0027] Please see Figure 1In this embodiment, a front bearing 10 is fixedly installed on one side of the housing 1, and the main shaft 2 is fixedly installed through the inner ring of the front bearing 10.

[0028] A mounting plate 11 is fixedly installed on one side of the housing 1, and a mounting bolt 12 passes through one side of the mounting plate 11.

[0029] Secondly, a rear cover 13 is fitted onto the surface of the mounting bolt 12, and a mounting nut 14 is threaded onto the surface of the mounting bolt 12. A rear bearing 15 is fixedly mounted on one side of the rear cover 13, and one end of the main shaft 2 is fixedly connected to the inner ring of the rear bearing 15. The main shaft 2 is supported by the front bearing 10 and the rear bearing 15, making the rotation of the main shaft 2 more stable.

[0030] Please see Figure 1 and Figure 2 In this embodiment, a stator 16 is fixedly installed on the inner wall of the housing 1, and a rotor 17 is fixedly installed on the surface of the main shaft 2, with the rotor 17 located inside the stator 16. When the stator 16 is energized, it drives the rotor 17 to rotate, which in turn drives the main shaft 2 to rotate.

[0031] A cooling water tank 18 is fixedly installed on the surface of the housing 1. The cooling water tank 18 is spirally wrapped around the surface of the housing 1 and is aligned with the stator 16.

[0032] Secondly, an inlet pipe 19 is fixedly installed at the input end of the cooling water tank 18, and an outlet pipe 20 is fixedly installed at the output end of the cooling water tank 18. Coolant is introduced into the inlet pipe 19, and the coolant flows spirally in the cooling water tank 18, carrying away the heat generated when the spindle 2 rotates. The coolant is discharged to the external cooling device through the outlet pipe 20.

[0033] The working principle of the above embodiment is as follows: high-pressure gas is introduced into the air inlet pipe 9, the gas enters the annular pipe 6, and is blown out into the guide groove 7 through the air outlet pipe 8. The airflow is guided to the surface of the main shaft 2 through the guide groove 7, so that the dust is blown out to the side of the main shaft 2 away from the housing 1, preventing the dust from entering the interior of the housing 1.

[0034] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0035] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision high-speed motorized spindle with a seal ring, comprising a housing (1), characterized in that: The main shaft (2) is rotatably mounted inside the housing (1). A sealing ring (4) is fixedly mounted on one side of the housing (1) by mounting screws (3). The main shaft (2) is rotatably connected to the sealing ring (4). A dustproof component is fixedly mounted on one side of the sealing ring (4). The dustproof assembly includes a dustproof sleeve (5) fixedly installed on one side of the sealing ring (4). An annular tube (6) is fixedly installed on the surface of the dustproof sleeve (5). A guide groove (7) is opened at one end of the dustproof sleeve (5). An air outlet pipe (8) is fixedly installed on the inner side wall of the dustproof sleeve (5). The air outlet pipe (8) is connected to the annular tube (6). An air inlet pipe (9) is fixedly installed on the surface of the annular tube (6).

2. A high-precision high-speed motorized spindle with a seal ring according to claim 1, characterized in that: A front bearing (10) is fixedly installed on one side of the housing (1), and the main shaft (2) is fixedly inserted through the inner ring of the front bearing (10).

3. The high-precision high-speed motorized spindle with a seal ring according to claim 1, characterized in that: A mounting plate (11) is fixedly installed on one side of the housing (1), and a mounting bolt (12) passes through one side of the mounting plate (11).

4. A high-precision high-speed motorized spindle with a seal ring according to claim 3, characterized in that: The mounting bolt (12) is fitted with a rear cover (13), and the mounting bolt (12) is threaded with a mounting nut (14).

5. A high-precision high-speed motorized spindle with a seal ring according to claim 4, characterized in that: A rear bearing (15) is fixedly installed on one side of the rear cover (13), and one end of the main shaft (2) is fixedly connected to the inner ring of the rear bearing (15).

6. A high-precision high-speed motorized spindle with a seal ring according to claim 1, characterized in that: The inner wall of the housing (1) is fixedly installed with a stator (16), and the surface of the main shaft (2) is fixedly installed with a rotor (17), which is located inside the stator (16).

7. A high-precision high-speed motorized spindle with a seal ring according to claim 6, characterized in that: A cooling water tank (18) is fixedly installed on the surface of the housing (1). The cooling water tank (18) is spirally wrapped around the surface of the housing (1) and is aligned with the stator (16).

8. A high-precision high-speed motorized spindle with a seal ring according to claim 7, characterized in that: The input end of the cooling water tank (18) is fixedly equipped with an inlet pipe (19), and the output end of the cooling water tank (18) is fixedly equipped with an outlet pipe (20).

Images