High-speed electric spindle for polishing

Abstract

The application relates to a high-speed electric spindle for polishing, which comprises a spindle, a spindle box, a spindle support sleeve, a labyrinth end cover, a first dustproof sleeve and a second dustproof sleeve, wherein a rolling bearing is arranged in the spindle box, a spindle bushing and a first connecting plate are arranged on one side of the spindle support sleeve close to an output end of the spindle, the spindle bushing is matched with the spindle, the first dustproof sleeve is fixedly installed on one side of the spindle support sleeve close to the output end of the spindle, the second dustproof sleeve is arranged outside the first dustproof sleeve, and the labyrinth end cover is fixed on one side of the spindle box far from the output end of the spindle. The first dustproof sleeve and the second dustproof sleeve can well block dust, multiple layers of protection are arranged, the spindle bushing and a sealing ring can ensure that the whole spindle is well sealed, the service life of the electric spindle is prolonged, the protection level can reach IP67, dust, oil stains and water stains can be resisted, the rotation of the spindle is limited by the rolling bearing and the spindle support sleeve, and the machining precision is improved.

Description

Technical Field

[0001] This application relates to the field of electric spindle technology, and more specifically, to a high-speed electric spindle for grinding. Background Technology

[0002] An electric spindle is a high-precision machine tool core component that integrates a motor and spindle, enabling direct high-speed rotation without intermediate transmission mechanisms. Key features include: High-speed rotation: Eliminating belts, gears, and other intermediate transmission components eliminates transmission losses and vibrations, allowing speeds to reach tens or even hundreds of thousands of rpm. High precision: The integrated design reduces transmission backlash, controlling rotational accuracy (radial runout, axial runout) to the micrometer level, ensuring machining precision. Compact structure: The integration of the motor and spindle significantly reduces space requirements, facilitating miniaturization and compact design of machine tools. Rapid response: The direct drive method enables faster spindle start / stop and speed change responses, improving machining efficiency.

[0003] It is an upgraded form of the traditional spindle, with core advantages in "high speed, high precision, and high integration," and is widely used in the field of precision machining. However, existing grinding devices peel off tiny particles from the spindle surface during the grinding process. These peeled particles, mixed with debris from the grinding wheel material and lubricant residue, form dust. The generation of this dust may have a certain impact on the working environment and the health of the operator, leading to increased maintenance and repair costs and causing considerable inconvenience. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a high-speed electric spindle for grinding, which can effectively block dust by using a first dust cover and a second dust cover, wherein the spindle bushing and sealing ring can ensure good overall sealing inside the spindle, improve the service life of the electric spindle and reduce maintenance.

[0005] The objective of this application is achieved through the following technical solution: A high-speed electric spindle for grinding includes a spindle, a spindle housing, a spindle support sleeve, a labyrinth end cap, a first dust cover, and a second dust cover. The spindle support sleeve is fixed to one side of the spindle housing. A rolling bearing is provided inside the spindle housing, and the rolling bearing is interference-fitted with the inner wall of the spindle housing. A spindle bushing and a first connecting plate are provided on the side of the spindle support sleeve near the spindle output end. The spindle bushing cooperates with the spindle. The first dust cover is fixedly installed on the side of the spindle support sleeve near the spindle output end, and one side of the first dust cover is fixedly connected to the first connecting plate. A fixing plate is provided on the side of the spindle housing near the spindle support sleeve. The second dust cover is sleeved on the outside of the first dust cover, and the end of the second dust cover is detachably connected to the fixing plate. A labyrinth end cap is fixed on the side of the spindle housing away from the spindle output end, and the labyrinth end cap is fixed to the spindle housing by a first screw.

[0006] As a further improvement to this application, a first threaded hole is provided on one side of the maze end cap, and a sealing ring is installed on the maze end cap by a second screw.

[0007] As a further improvement to this application, a connector is detachably mounted at the output end of the spindle.

[0008] As a further improvement to this application, the rolling bearing is provided with 1-3.

[0009] As a further improvement to this application, the first dust cover, the second dust cover, the spindle support sleeve, and the labyrinth end cap are all provided with through holes in the center, and the diameter of the through holes is equal to that of the spindle.

[0010] As a further improvement to this application, the bottom of the first dust cover is provided with a dust outlet.

[0011] As a further improvement of this application, the second dust cover and the fixing plate are provided with a second threaded hole, and the second dust cover and the fixing plate are connected by bolts.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a first dust cover and a second dust cover to effectively block dust, providing multi-layered protection. The spindle bushing and sealing ring ensure a good overall seal inside the spindle, improving the service life of the electric spindle. The protection level can reach IP67, resisting the intrusion of dust, oil, and water stains. The trouble-free running time of the motor can be effectively increased, reducing the number of maintenance times and costs. The rolling bearing and spindle support sleeve restrict the rotation of the spindle, improving machining accuracy. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a high-speed electric spindle for grinding is provided for some embodiments of this application; Figure 2 A cross-sectional view of a high-speed electric spindle for grinding provided for some embodiments of this application; Figure 3 Structural diagrams of the spindle support sleeve and the first dust cover provided for some embodiments of this application; Figure 4 for Figure 3 Another structural diagram of the provided spindle support sleeve and the first dust cover sleeve; Figure 5 A schematic diagram of the specific structure of the end cap of the maze; Figure 6 This is a schematic diagram of the structure of the rolling bearing in this application.

[0014] Icons: 1. Spindle; 2. Spindle box; 3. Spindle support sleeve; 4. Labyrinth end cap; 5. First dust cover; 6. Second dust cover; 7. Rolling bearing; 8. Spindle bushing; 9. First connecting plate; 10. Fixing plate; 11. First threaded hole; 12. Sealing ring; 13. Dust outlet; 14. Second threaded hole. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0016] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0017] This application provides a high-speed electric spindle for grinding, comprising a spindle 1, a spindle housing 2, a spindle support sleeve 3, a labyrinth end cap 4, a first dust cover 5, and a second dust cover 6. The spindle support sleeve 3 is fixed to one side of the spindle housing 2. (See attached drawing.) Figure 1 The spindle support sleeve 3 is fixed to the left side of the spindle box 2. The spindle support sleeve 3 is used to engage with the spindle 1, improving the stability of the spindle 1's rotation. The spindle box 2 is equipped with a rolling bearing 7, which has an interference fit with the inner wall of the spindle box 2. The spindle support sleeve 3 is located near the output end of the spindle 1 or on the left side of the spindle 1, with a spindle bushing 8 and a first connecting plate 9. The spindle bushing 8 engages with the spindle 1, preventing dust, oil, and other impurities from entering the spindle box 2 and affecting the operation of the spindle 1. The spindle support sleeve 3 is located near the output end of the spindle 1. A first dust cover 5 is fixedly installed on one side of the output end. One side of the first dust cover 5 is fixedly connected to the first connecting plate 9. A fixing plate 10 is provided on the side of the spindle box 2 near the spindle support sleeve 3. A second dust cover 6 is sleeved on the outside of the first dust cover 5. The first dust cover 5 and the second dust cover 6 respectively protect one side of the output end of the spindle 1. The protection effect is better when combined with the spindle bushing 8. The end of the second dust cover 6 is detachably connected to the fixing plate 10. A labyrinth end cover 4 is fixed on the side of the spindle box 2 away from the output end of the spindle 1. The labyrinth end cover 4 is fixed to the spindle box 2 by the first screw.

[0018] The labyrinth end cap 4 has a first threaded hole 11 on one side, and a sealing ring 12 is installed on the labyrinth end cap 4 by a second screw. The sealing ring 12 seals the other end of the spindle 1 to ensure the overall protective sealing effect.

[0019] The spindle 1 has a detachable connector at its output end or on its left side. This connector is used to replace various cutting tools, thereby enabling the machining of various workpieces.

[0020] Specifically, there are three rolling bearings 7 to improve the rotational stability of the rolling bearings 7 and the main shaft 1.

[0021] The first dust cover 5, the second dust cover 6, the main shaft support sleeve 3 and the labyrinth end cover 4 are all provided with through holes in the center, and the diameter of the through holes is equal to that of the main shaft 1.

[0022] The bottom of the first dust cover 5 is provided with a dust outlet 13, which can collect dust and other particles that fall into the first dust cover 5 and drop them into the second dust cover 6 through the dust outlet 13. The dust can be cleaned in time by disassembling the second dust cover 6.

[0023] Specifically, the second dust cover 6 and the fixing plate 10 are provided with a second threaded hole 14, and the second dust cover 6 and the fixing plate 10 are connected by bolts.

[0024] This utility model utilizes the first dust cover 5 and the second dust cover 6 to effectively block dust, providing multi-layer protection. The main shaft bushing 8 and the sealing ring 12 ensure good overall sealing inside the main shaft 1, improving the service life of the main shaft 1 and effectively increasing the fault-free operation time of the motor, reducing maintenance frequency and costs. The rolling bearing 7 and the main shaft support sleeve 3 restrict the rotation of the main shaft 1, improving machining accuracy. The bottom of the first dust cover 5 is provided with a dust outlet 13, which can collect dust that falls into the first dust cover 5 and drop it into the second dust cover 6 through the dust outlet 13. The dust can be cleaned in time by disassembling the second dust cover 6.

[0025] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art, all of which fall within the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-speed electric spindle for grinding, comprising a spindle (1), a spindle housing (2), a spindle support sleeve (3), a labyrinth end cap (4), a first dust cover (5), and a second dust cover (6), characterized in that, The spindle support sleeve (3) is fixed to one side of the spindle box (2). The spindle box (2) is provided with a rolling bearing (7). The rolling bearing (7) is interference-fitted with the inner wall of the spindle box (2). The spindle support sleeve (3) is provided with a spindle bushing (8) and a first connecting plate (9) on the side near the output end of the spindle (1). The spindle bushing (8) cooperates with the spindle (1). The spindle support sleeve (3) is fixedly installed with a first dust cover (5) on the side near the output end of the spindle (1). One side of the first dust cover (5) is fixedly connected to the first connecting plate (9). The spindle box (2) is provided with a fixing plate (10) on the side near the spindle support sleeve (3). The second dust cover (6) is sleeved on the outside of the first dust cover (5). The end of the second dust cover (6) is detachably connected to the fixing plate (10). The spindle box (2) is fixed with a labyrinth end cap (4) on the side away from the output end of the spindle (1). The labyrinth end cap (4) is fixed to the spindle box (2) by the first screw.

2. The high-speed electric spindle for grinding according to claim 1, characterized in that, The labyrinth end cap (4) has a threaded hole on one side, and a sealing ring (12) is installed on the labyrinth end cap (4) by a second screw.

3. The high-speed electric spindle for grinding according to claim 1, characterized in that, The spindle (1) has a detachable connector installed at its output end.

4. A high-speed electric spindle for grinding according to claim 1, characterized in that, The rolling bearing (7) is provided in 1-3 units.

5. A high-speed electric spindle for grinding according to claim 1, characterized in that, The first dust cover (5), the second dust cover (6), the main shaft support sleeve (3) and the labyrinth end cap (4) are all provided with through holes in the center, and the diameter of the through holes is equal to that of the main shaft (1).

6. A high-speed electric spindle for grinding according to claim 1, characterized in that, The bottom of the first dust cover (5) is provided with a dust outlet (13).

7. A high-speed electric spindle for grinding according to claim 1, characterized in that, The second dust cover (6) and the fixing plate (10) are provided with a second threaded hole (14), and the second dust cover (6) and the fixing plate (10) are connected by bolts.

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