Encoder air curtain protection mechanism of lathe spindle

Abstract

The utility model discloses an encoder air curtain protection mechanism of a lathe spindle, which belongs to the technical field of numerical control machine tools and comprises a rotor, a water jacket is fixedly sleeved on the outer surface of one end of the rotor, a rear bearing body is sleeved on the surface of the center of the rotor in a rolling manner, and a rear bearing sleeve is sleeved on the outer surface of the rear bearing body in a rolling manner. One end of the rear bearing body is provided with a dustproof cover, one side of the dustproof cover is fixedly connected with a circular grating, the outer side of the dustproof cover is sleeved with a rear bearing gland, the outer surface of the rear bearing gland is sleeved with an adapter plate, one end of the rear bearing gland is fixedly connected with a coded disc sheath, and the coded disc sheath is fixedly connected with a coded disc. A rear bearing nut is fixed to one end of the circular grating, and first air holes are formed in the surface of the rear bearing sleeve and the surface of the rear bearing gland. When high-flow gas is introduced into the outside, the gas can form a circulating gas curtain inside to discharge internal dust, water vapor and the like, so that the circular grating can be well protected, and a good protection effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of CNC machine tool technology, specifically relating to an encoder air curtain protection mechanism for a lathe spindle. Background Technology

[0002] In CNC machine tool systems, encoders are mainly used to measure rotational angles and speeds. Encoders are a crucial component of the control system, and their performance directly affects the positioning accuracy and machining quality of the machine tool. To achieve higher positioning accuracy in lathe spindles, optical encoders are typically installed.

[0003] Existing grating encoders are embedded inside the spindle, but they are not completely sealed. Moisture, dust, and other substances can enter the spindle through the gaps. In harsh environments, such as when there is oil or moisture on the grating, the accuracy of the grating encoder will be greatly reduced, which has certain limitations. Utility Model Content

[0004] The purpose of this utility model is to provide an encoder air curtain protection mechanism for a lathe spindle, in order to solve the problem mentioned in the background art that the existing grating encoder is hidden inside the spindle, but it is not completely sealed. Moisture, dust and other substances can enter the spindle through the gaps. In harsh environments, such as when there is oil or moisture on the grating, the accuracy of the grating encoder will be greatly reduced, which has certain limitations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an encoder air curtain protection mechanism for a lathe spindle, comprising a rotor, a water jacket fixedly sleeved on the outer surface of one end of the rotor, a rear bearing body rollingly sleeved on the center surface of the rotor, a rear bearing sleeve rollingly sleeved on the outer surface of the rear bearing body, a dust cover provided at one end of the rear bearing body, a circular grating fixedly connected to one side of the dust cover, a rear bearing pressure cover sleeved on the outer side of the dust cover, an adapter plate sleeved on the outer surface of the rear bearing pressure cover, a code disk sleeve fixedly connected to one end of the rear bearing pressure cover, a rear bearing nut fixed to one end of the circular grating, and a first air hole provided on the surface of both the rear bearing sleeve and the rear bearing pressure cover.

[0006] Preferably, a first threaded hole is fixedly opened on one side of the end face of the rear bearing sleeve, and a second threaded hole is fixedly opened on the other side of the end face of the rear bearing sleeve.

[0007] Preferably, a second air hole is fixedly opened on one side of the rear bearing cover, an annular groove is fixedly opened on the inner side of the rear bearing cover, and a first screw through hole is fixedly opened on one side of the end face of the rear bearing cover.

[0008] Preferably, a second screw through hole is fixedly opened on the surface of the code disk sheath, and a third screw through hole is fixedly opened on the surface of the circular grating.

[0009] Preferably, the surface of the dust cover is fixedly provided with a certain feature.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. When a highly fluid gas is introduced into the outside, the gas can form a circulating air curtain inside, expelling internal dust, water vapor, etc., which can effectively protect the circular grating and has a good protective effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal gas path of this utility model;

[0014] Figure 3 This is a cross-sectional structural diagram of the rear bearing sleeve of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the rear bearing sleeve of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the rear bearing cover of this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the code disk sheath of this utility model;

[0018] Figure 7 This is a schematic diagram of the structure of the circular grating of this utility model;

[0019] Figure 8 This is a schematic diagram of the structure of the dust cover of this utility model.

[0020] In the diagram: 1. Rotor; 2. Water jacket; 3. Rear bearing body; 4. Rear bearing sleeve; 5. Dust cover; 6. Rear bearing gland; 7. Adapter plate; 8. Circular grating; 9. Code disk sleeve; 10. Rear bearing nut; 11. First air hole; 12. First threaded hole; 13. Second threaded hole; 14. Second air hole; 15. Annular groove; 16. First screw through hole; 17. Second screw through hole; 18. Third screw through hole; 19. Threaded fixing hole. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-8 This utility model provides a technical solution: an encoder air curtain protection mechanism for a lathe spindle, including a rotor 1, a water jacket 2 fixedly sleeved on the outer surface of one end of the rotor 1, a rear bearing body 3 rollingly sleeved on the center surface of the rotor 1, a rear bearing sleeve 4 rollingly sleeved on the outer surface of the rear bearing body 3, a dust cover 5 provided at one end of the rear bearing body 3, a circular grating 8 fixedly connected to one side of the dust cover 5, a rear bearing pressure cover 6 sleeved on the outer side of the dust cover 5, an adapter plate 7 sleeved on the outer surface of the rear bearing pressure cover 6, a code disk sleeve 9 fixedly connected to one end of the rear bearing pressure cover 6, a rear bearing nut 10 fixed to one end of the circular grating 8, and a first air hole 11 opened on the surface of both the rear bearing sleeve 4 and the rear bearing pressure cover 6.

[0023] In this embodiment, the circular grating 8 is mounted on the dust cover 5 for a fixed connection. The dust cover 5 is pressed against the rear bearing body 3 and the rear bearing nut 10, so that the entire circular grating 8 system is installed inside the spindle. However, there are gaps between the components at the rear end of the spindle, making complete sealing impossible. The rear bearing sleeve 4 and the rear bearing cover 6 have air inlets on their radial and end faces that are connected. A sealing ring is used between the rear bearing sleeve 4 and the rear bearing cover 6 to prevent air leakage. The outer circle of the dust cover 5 and the inner hole of the rear bearing cover 6 are... A gap is provided to allow gas to pass through. The encoder sleeve 9 is installed on the rear bearing cover 6 for a fixed connection. The encoder sleeve 9 reduces dust and other contaminants falling onto the circular grating 8. Furthermore, there is a certain gap between the inner hole of the rear bearing cover 6 and the outer circle of the dust cover 5 and the outer circle of the circular grating 8 to ensure no interference with the circular grating 8. Simultaneously, gas can pass through this gap, blowing away dust, moisture, and other contaminants adhering to the outer circle of the circular grating 8. An air curtain is formed around the circular grating 8 to prevent dust and moisture from contacting it. The gas flow path is as follows: Figure 2 As shown, the adapter plate 7 is installed on the end face of the rear bearing cover 6 for a fixed connection, and a drain hole is provided in the radial direction. This drain hole is close to the end face of the rear bearing cover 6. The gas can effectively discharge the dust and water vapor in the cavity through this drain hole. It should be noted that this drain hole must be installed downward. When high-flow gas is introduced from the outside, this design can form a circulating air curtain inside, which can discharge the internal dust and water vapor, and can protect the circular grating 8 well, thus providing a good protective effect.

[0024] Specifically, a first threaded hole 12 is fixedly opened on one side of the end face of the rear bearing sleeve 4, and a second threaded hole 13 is fixedly opened on the other side of the end face of the rear bearing sleeve 4.

[0025] In this embodiment, the adapter plate 7 can be fixed through the first threaded hole 12, and the rear bearing cover 6 can be fixed through the second threaded hole 13.

[0026] Specifically, a second air hole 14 is fixedly opened on one side of the rear bearing cover 6, an annular groove 15 is fixedly opened on the inner side of the rear bearing cover 6, and a first screw through hole 16 is fixedly opened on one side of the end face of the rear bearing cover 6.

[0027] In this embodiment, the outer opening of the second vent 14 is sealed with a screw to prevent air leakage, and the lower end is connected to the first vent 11. The other end of the second vent 14 is connected to the annular groove 15, which can ensure the flow of gas.

[0028] Specifically, the surface of the code disk cover 9 is fixedly provided with a second screw through hole 17, and the surface of the circular grating 8 is fixedly provided with a third screw through hole 18.

[0029] In this embodiment, the second screw through hole 17 and the third screw through hole 18 can be used for screw fixing.

[0030] Specifically, the surface of the dust cover 5 has a fixed opening of 20.

[0031] In this embodiment, the threaded fixing hole 19 facilitates the threaded fixing between the circular grating 8 and the dust cover 5.

[0032] 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. An encoder air curtain protection mechanism for a lathe spindle, comprising a rotor (1), characterized in that: A water jacket (2) is fixedly sleeved on the outer surface of one end of the rotor (1). A rear bearing body (3) is rolledly sleeved on the center surface of the rotor (1). A rear bearing sleeve (4) is rolledly sleeved on the outer surface of the rear bearing body (3). A dust cover (5) is provided at one end of the rear bearing body (3). A circular grating (8) is fixedly connected to one side of the dust cover (5). A rear bearing pressure cover (6) is sleeved on the outer side of the dust cover (5). A transition plate (7) is sleeved on the outer surface of the rear bearing pressure cover (6). A code disk sleeve (9) is fixedly connected to one end of the rear bearing pressure cover (6). A rear bearing nut (10) is fixed at one end of the circular grating (8). A first air hole (11) is opened on the surface of both the rear bearing sleeve (4) and the rear bearing pressure cover (6).

2. The encoder air curtain protection mechanism for a lathe spindle according to claim 1, characterized in that: A first threaded hole (12) is fixedly opened on one side of the end face of the rear bearing sleeve (4), and a second threaded hole (13) is fixedly opened on the other side of the end face of the rear bearing sleeve (4).

3. The encoder air curtain protection mechanism for a lathe spindle according to claim 1, characterized in that: A second air hole (14) is fixedly opened on one side of the rear bearing cover (6), an annular groove (15) is fixedly opened on the inner side of the rear bearing cover (6), and a first screw through hole (16) is fixedly opened on one side of the end face of the rear bearing cover (6).

4. The encoder air curtain protection mechanism for a lathe spindle according to claim 1, characterized in that: The surface of the code disk cover (9) is fixedly provided with a second screw through hole (17), and the surface of the circular grating (8) is fixedly provided with a third screw through hole (18).

5. The encoder air curtain protection mechanism for a lathe spindle according to claim 1, characterized in that: The surface of the dust cover (5) is fixedly provided with (20).

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