Main shaft end cover and driving device with same

Abstract

The utility model discloses a main shaft end cover. Comprising a mounting ring, cylinders coaxially arranged and annularly connected in an inner ring of the mounting ring, annular cover plates arranged at the front ends of the cylinders and used for sleeving a main shaft, annular drainage grooves outwards concavely formed in the inner surfaces of the cylinders and used for storing water and draining water, and annular mounting grooves outwards concavely formed in the inner surfaces of the cylinders and used for mounting sealing pieces, the water drainage opening is formed in the annular water drainage groove; the annular drainage grooves are formed between the annular cover plate and the annular installation grooves, the annular drainage grooves and the annular installation grooves are arranged at intervals, the inner diameter of the annular cover plate is smaller than that of the barrel, and the annular cover plate is in clearance fit with the main shaft. According to the main shaft end cover, the service life of the sealing piece in the annular mounting groove can be prolonged, and then the production efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to a main shaft end cover and a driving device having the same. Background Art

[0002] Existing cutting equipment uses a drive motor and a gear reduction mechanism to drive the spindle, with a cutting head mounted on the end of the spindle that extends beyond the gearbox. This can lead to water ingress into the spindle, shortening bearing life and diluting the lubricating oil. This problem is typically addressed by installing a sealing ring in the spindle end cap. However, over long periods of use, due to the high flow of cutting fluid at the end of the spindle where the cutting head is mounted, a large amount of cutting fluid accumulates between the spindle, the spindle end cap, and the sealing ring, which can corrode the sealing ring and reduce its service life. Frequent sealing ring replacement also impacts the production efficiency of the cutting equipment. Utility Model Content

[0003] The purpose of the utility model is to provide a main shaft end cover and a driving device having the same, which can increase the service life of the sealing member in the annular mounting groove and thus ensure production efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A spindle end cover, comprising a mounting ring, a cylindrical body coaxially arranged and annularly connected to the inner ring of the mounting ring, an annular cover plate provided at the front end of the cylindrical body and used to sleeve the spindle, an annular drainage groove concavely provided on the inner surface of the cylindrical body and used to store and drain water, an annular mounting groove concavely provided on the inner surface of the cylindrical body and used to mount a seal, and a drainage port provided on the annular drainage groove;

[0006] The annular drainage groove is arranged between the annular cover plate and the annular mounting groove, and the annular drainage groove and the annular mounting groove are arranged at intervals. The inner diameter of the annular cover plate is smaller than the inner diameter of the cylinder, and the annular cover plate is loosely matched with the main shaft.

[0007] Preferably, the front end portion of the cylinder along its axial direction extends forward from the mounting ring, and the annular drainage groove is provided on the front side of the front end of the mounting ring.

[0008] Preferably, the annular mounting groove passes through the cylinder backward through its annular bottom surface.

[0009] Preferably, the annular bottom surface of the annular drainage groove opens in a conical shape in a forward direction.

[0010] Preferably, the drain outlet is provided at the bottom of the annular drain groove and passes through the annular cover plate forward.

[0011] More preferably, the drain outlet is arranged to be inclined downward in a forward direction.

[0012] Preferably, the mounting ring is provided with a plurality of mounting holes which are arranged at intervals along the circumferential direction and are arranged in a ring around the outer side of the cylinder.

[0013] Preferably, an external thread is provided on the outer circumferential surface of the cylinder.

[0014] More preferably, the external thread is located on the rear side of the rear end surface of the mounting ring.

[0015] A driving device includes the above-mentioned spindle end cover, the driving device includes a gear box, a spindle arranged in the gear box so as to be rotatable around its own axis, a drive motor arranged on the gear box, and a gear reduction mechanism arranged in the gear box and located between the output shaft of the drive motor and the spindle, the front end of the spindle extends forward from the gear box and is used to install a cutting head, the spindle end cover is installed on the gear box, and the cylinder is coaxially sleeved on the front end of the spindle.

[0016] Due to the application of the above-mentioned technical scheme, the utility model has the following advantages compared with the prior art: the spindle end cover of the utility model and the driving device therewith, by arranging an annular drainage groove for storing water and draining water in the cylinder, and arranging the annular drainage groove between the annular cover plate and the annular mounting groove, the cutting fluid that penetrates from the gap between the annular cover plate and the spindle will first enter and accumulate in the annular drainage groove under the action of centrifugal force, avoiding its soaking and corroding the seal in the annular mounting groove, and the part of the cylinder located between the annular drainage groove and the annular mounting groove can also block the cutting fluid from entering the annular mounting groove; the cutting fluid accumulated in the annular drainage groove can be discharged outward from the drain port in a timely manner, avoiding the accumulation of cutting fluid in the spindle end cover, and can increase the service life of the seal in the annular mounting groove, thereby ensuring production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attachment Figure 1 The structure of the spindle end cover according to the specific embodiment of the utility model is shown in FIG. Figure 1 ;

[0018] Attachment Figure 2 The structure of the spindle end cover according to the specific embodiment of the utility model is shown in FIG. Figure 2 ;

[0019] Attachment Figure 3 It is a schematic cross-sectional view of a drive device with a spindle end cover;

[0020] Attachment Figure 4 For attachment Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Among them: 1. Mounting ring; 2. Cylinder; 3. Main shaft; 4. Annular cover; 5. Annular drain groove; 6. Seal; 7. Annular mounting groove; 8. Drain port; 9. Mounting hole; 10. External thread; 11. Gear box; 12. Drive motor; 13. Output shaft; 14. Gear reduction mechanism; 15. Annular partition. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0023] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0026] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0027] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0029] The forward and backward directions mentioned below are references Figure 3 , Figure 3 The left side in the text is the front in the following text. Figure 3 The right side in the figure is the back in the following text.

[0030] See also Figure 1-2 As shown, this embodiment provides a main shaft end cover, including a mounting ring 1, a cylinder 2 coaxially arranged and connected to the inner ring of the mounting ring 1, an annular cover plate 4 provided at the front end of the cylinder 2 and used for sleeve-mounting the main shaft 3, an annular drainage groove 5 recessed outwardly on the inner surface of the cylinder 2 and used for storing water and draining water, an annular mounting groove 7 recessed outwardly on the inner surface of the cylinder 2 and used for mounting a seal 6, and a drainage port 8 opened on the annular drainage groove 5.

[0031] In this embodiment, the mounting ring 1 and the barrel 2 are integrally formed, the front end of the barrel 2 extends forward from the mounting ring 1 , and the rear end of the barrel 2 extends backward from the mounting ring 1 .

[0032] An annular drainage groove 5 is disposed between the annular cover plate 4 and the annular mounting groove 7. The annular drainage groove 5 and the annular mounting groove 7 are spaced apart, with an annular partition 15 disposed therebetween. This annular partition 15 is part of the cylindrical body 2. The inner diameter of the annular cover plate 4 is smaller than that of the cylindrical body 2, that is, smaller than the inner diameter of the annular partition 15. The annular cover plate 4 and the spindle 3 have a clearance fit. In this embodiment, the rear end surface of the annular cover plate 4 coincides with the front surface of the annular drainage groove 5.

[0033] By setting an annular drainage groove 5 for storing water and draining water in the cylinder 2, and setting the annular drainage groove 5 between the annular cover plate 4 and the annular mounting groove 7, the cutting fluid that penetrates from the gap between the annular cover plate 4 and the main shaft 3 will first enter and accumulate in the annular drainage groove 5 under the action of centrifugal force, avoiding its soaking and corroding the seal 6 in the annular mounting groove 7. The annular partition 15 can also block the cutting fluid from entering the annular mounting groove 7; the cutting fluid accumulated in the annular drainage groove 5 can be discharged outward from the drain port 8 in a timely manner, avoiding the accumulation of cutting fluid in the main shaft end cover, and can improve the service life of the seal 6 in the annular mounting groove 7, thereby ensuring production efficiency.

[0034] In this embodiment, the annular bottom surface of the annular drainage groove 5 is a cylindrical surface, the drainage port 8 is arranged at the bottom of the annular drainage groove 5, and passes through the annular cover plate 4 forward, and the drainage port 8 is arranged to be tilted downward in the forward direction to facilitate the smooth discharge of the cutting fluid.

[0035] In another embodiment, in order to facilitate the smooth discharge of the cutting fluid and prevent a large amount of cutting fluid from accumulating in the annular drainage groove 5 , the annular bottom surface of the annular drainage groove 5 opens in a conical shape in the forward direction.

[0036] In this embodiment, the annular drainage groove 5 is provided on the front face side of the front end of the mounting ring 1. This structure can increase the distance between it and the rear annular mounting groove 7, thereby further preventing the cutting fluid from entering the annular mounting groove 7 backwards.

[0037] In this embodiment, the annular installation groove 7 passes through the cylinder 2 backward through its annular bottom surface to facilitate the installation of the sealing member 6. As needed, one or more circles of sealing members 6 can be set in the annular installation groove 7.

[0038] In this embodiment, an external thread 10 is provided on the outer circumferential surface of the cylinder 2, and the external thread 10 is located on the rear side of the rear end surface of the mounting ring 1. The cylinder 2 can be fitted into the gear box 11; the mounting ring 1 is provided with a plurality of mounting holes 9 arranged at intervals along the circumferential direction and arranged in a ring on the outside of the cylinder 2, which are used to further fix the spindle end cover as a whole on the gear box 11.

[0039] See also Figure 3-4 As shown, this embodiment provides a driving device, including the above-mentioned spindle end cover, the driving device includes a gear box 11, a spindle 3 rotatable around its own axis in the gear box 11, a drive motor 12 provided on the gear box 11, and a gear reduction mechanism 14 provided in the gear box 11 and located between the output shaft 13 of the drive motor 12 and the spindle 3. The front end of the spindle 3 extends forward from the gear box 11 and is used to install a cutting head. The spindle end cover is installed on the gear box 11, and the cylinder 2 is coaxially sleeved on the front end of the spindle 3. The spindle end cover is used to seal the annular gap between the gear box 11 and the spindle 3.

[0040] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A spindle end cover, characterized in that: The device comprises a mounting ring, a cylindrical body coaxially arranged and annularly connected to the inner ring of the mounting ring, an annular cover plate provided at the front end of the cylindrical body and used to sleeve the main shaft, an annular drainage groove concavely provided on the inner surface of the cylindrical body and used to store and drain water, an annular mounting groove concavely provided on the inner surface of the cylindrical body and used to install a sealing member, and a drainage port provided on the annular drainage groove; The annular drainage groove is arranged between the annular cover plate and the annular mounting groove, and the annular drainage groove and the annular mounting groove are arranged at intervals. The inner diameter of the annular cover plate is smaller than the inner diameter of the cylinder, and the annular cover plate is loosely matched with the main shaft.

2. The spindle end cover according to claim 1, characterized in that: The front end portion of the cylinder along the axial direction thereof extends forward from the mounting ring, and the annular drainage groove is provided on the front side of the front end of the mounting ring.

3. The spindle end cover according to claim 1, characterized in that: The annular mounting groove passes through the cylinder backward through its annular bottom surface.

4. The spindle end cover according to claim 1, characterized in that: The annular bottom surface of the annular drainage groove opens in a conical shape in a forward direction.

5. The spindle end cover according to claim 1, characterized in that: The drain port is arranged at the bottom of the annular drain groove and passes through the annular cover plate forward.

6. The spindle end cover according to claim 5, characterized in that: The drain outlet is arranged to be inclined downward in a forward direction.

7. The spindle end cover according to claim 1, characterized in that: The mounting ring is provided with a plurality of mounting holes which are arranged at intervals along the circumferential direction and are arranged in a ring around the outer side of the cylinder.

8. The spindle end cover according to claim 1, characterized in that: An external thread is provided on the outer circumferential surface of the cylinder.

9. The spindle end cover according to claim 8, characterized in that: The external thread is located at the rear side of the rear end surface of the mounting ring.

10. A driving device comprising the spindle end cover according to any one of claims 1 to 9, characterized in that: The driving device includes a gearbox, a main shaft arranged in the gearbox so as to be rotatable around its own axis, a driving motor arranged on the gearbox, and a gear reduction mechanism arranged in the gearbox and located between the output shaft of the driving motor and the main shaft. The front end of the main shaft extends forward from the gearbox and is used to install a cutting head. The main shaft end cover is installed on the gearbox, and the cylinder is coaxially sleeved on the front end of the main shaft.

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