Main shaft end waterproof structure and machine tool

Abstract

The utility model discloses a main shaft end portion waterproof structure and a machine tool, and belongs to the field of machine tools, the main shaft end portion waterproof structure comprises a shaft seat and a main shaft, the main shaft is rotatably installed in the shaft seat, the main shaft end portion waterproof structure further comprises a waterproof cover, a first sealing ring and a water retaining ring, the waterproof cover is fixed at the end portion of the main shaft, and the first sealing ring is installed between the waterproof cover and the main shaft. The axis of the first sealing ring coincides with the axis of the main shaft, the water retaining ring is fixed to the shaft seat, a groove is formed in the end of the waterproof cover, the extending direction of the groove is the same as the axis direction of the main shaft, and the water retaining ring is partially located in the groove. Cutting fluid is further prevented from entering the spindle.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe field especially is concerned with a main shaft end waterproof structure and including main shaft end waterproof structure's lathe. BACKGROUND

[0002] When lathe processes workpiece, will continuously spray cutting fluid to tool and workpiece surface, is used for reducing processing temperature and reducing processing friction, because of high -speed rotation of tool bit when processing, will make cutting fluid and swarf fly everywhere, cutting fluid is easy to enter the inside of main shaft, lead to bearing damage.

[0003] In prior art, adopt waterproof cover and water baffle ring to seal, but when cutting fluid water volume is bigger, the gap between waterproof cover and water baffle ring is full of cutting fluid, here waterproof maze is invalid, cutting fluid enters the maze of main shaft and maze flange.Due to the reasons such as sealing pad cutting, uneven installation, when water volume is big, cutting fluid (sealing pad invalid) also seeps into the connection of main shaft and waterproof cover, cutting fluid seeps into the maze of main shaft and maze flange, enters the inside of main shaft, leads to bearing damage. UTILITY MODEL CONTENTS

[0004] In order to overcome the deficiency of prior art, one of purposes of the utility model is to provide a main shaft end waterproof structure that cutting fluid is not easy to enter the main shaft.

[0005] In order to overcome the deficiency of prior art, the second purpose of the utility model is to provide a lathe that cutting fluid is not easy to enter the main shaft.

[0006] One of purposes of the utility model is realized by the following technical scheme:

[0007] A main shaft end waterproof structure, including axle seat and main shaft, the main shaft is rotatably installed in the inside of the axle seat, the main shaft end waterproof structure further includes waterproof cover, first sealing ring and water baffle ring, the waterproof cover is fixed to the main shaft end, the first sealing ring is installed between the waterproof cover and the main shaft, the axis of the first sealing ring coincides with the axis of the main shaft, the water baffle ring is fixed to the axle seat, the waterproof cover end is equipped with recess, the extension direction of the recess is same with the axis direction of the main shaft, the water baffle ring part is located in the recess.

[0008] Further, the inner wall of the waterproof cover is equipped with installation groove, the first sealing ring is installed in the installation groove, the first sealing ring is in contact with the outer wall of the main shaft.

[0009] Further, the main shaft end waterproof structure further includes maze flange, the maze flange is fixed to the axle seat, the maze flange is located in the inside of the waterproof cover and is located between the axle seat and the main shaft.

[0010] Further, the main shaft end waterproof structure further comprises a second sealing ring, which is installed between the labyrinth flange and the shaft seat.

[0011] Further, the labyrinth flange is provided with a sealing groove on the side facing the shaft seat, and the second sealing ring is installed in the sealing groove.

[0012] Further, the labyrinth flange comprises a plurality of protrusions, and the protrusions form a labyrinth structure with the main shaft.

[0013] Further, the number of the protrusions is multiple, and the extension direction of the labyrinth structure formed by the multiple protrusions is perpendicular to the axis of the main shaft.

[0014] Further, the water blocking ring is located on the same horizontal line as the labyrinth flange.

[0015] The second purpose of the utility model is achieved by the following technical scheme:

[0016] The machine tool comprises the main shaft end waterproof structure.

[0017] Compared with the prior art, the main shaft end waterproof structure comprises a shaft seat and a main shaft, the main shaft is rotatably installed in the shaft seat, the main shaft end waterproof structure further comprises a waterproof cover, a first sealing ring and a water blocking ring, the waterproof cover is fixed to the end of the main shaft, the first sealing ring is installed between the waterproof cover and the main shaft, the axis of the first sealing ring coincides with the axis of the main shaft, the water blocking ring is fixed to the shaft seat, the end of the waterproof cover is provided with a groove, the extension direction of the groove is the same as the axis direction of the main shaft, and the water blocking ring is partially located in the groove. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a structural schematic view of the main shaft end waterproof structure of the utility model;

[0019] Figure 2 Fig. 2 is an enlarged view of the main shaft end waterproof structure A in Fig. 1. Figure 1

[0020] In the figure: 10, shaft seat; 20, main shaft; 30, waterproof cover; 31, installation groove; 32, groove; 40, first sealing ring; 50, water blocking ring; 60, labyrinth flange; 61, protrusion; 62, sealing groove; 70, second sealing ring; 80, fastener. DETAILED DESCRIPTION

[0021] ​The technical solutions in the embodiments of the present application will be described clearly and completely 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, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0022] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or can be present with another intermediate component fixed thereto. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or can be present with another intermediate component. When a component is referred to as being "provided on" another component, it can be directly provided on the other component or can be present with another intermediate component. The terms "vertical", "horizontal", "left", "right", and the like used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description herein is for describing the specific embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Please refer to Figures 1 to 2 The present application discloses a main shaft end waterproof structure, which comprises a shaft seat 10, a main shaft 20, a waterproof cover 30, a first sealing ring 40, a water blocking ring 50, a labyrinth flange 60, a second sealing ring 70 and a fastener 80.

[0025] There is a gap between the end of the shaft seat 10 and the main shaft 20, and when in use, cutting fluid enters the main shaft 20 from the gap, which damages the bearing and affects the use. The waterproof cover 30, the first sealing ring 40, the water blocking ring 50, the labyrinth flange 60 and the second sealing ring 70 are installed between the shaft seat 10 and the main shaft 20, and seal the gap between the shaft seat 10 and the main shaft 20, preventing the cutting fluid from entering the main shaft 20.

[0026] The main shaft 20 is rotatably installed on the shaft seat 10, and the end of the main shaft 20 extends out of the shaft seat 10.

[0027] The waterproof cover 30 is fixed to the main shaft 20 by the fastener 80, and the waterproof cover 30 covers the end of the main shaft 20 and part of the shaft seat 10. The inner wall of the waterproof cover 30 is provided with a mounting groove 31, which is a circular ring, and the axis of the mounting groove 31 coincides with the axis of the main shaft 20. The mounting groove 31 is used to install the first sealing ring 40, and the first sealing ring 40 seals the waterproof cover 30 and the main shaft 20. The end of the waterproof cover 30 is provided with a groove 32 facing the shaft seat 10, and the edge length of the groove 32 near the main shaft 20 is greater than that away from the main shaft 20. The end of the waterproof cover 30 is sealed in the groove 32, which further prevents the cutting fluid from entering the main shaft 20.

[0028] The first sealing ring 40 is installed in the mounting groove 31 and located between the waterproof cover 30 and the main shaft 20, sealing the gap between the shaft seat 10 and the main shaft 20.

[0029] The water baffle ring 50 is fixed to the shaft seat 10, and the top of the water baffle ring 50 is located in the groove 32, sealing the water baffle ring 50 and the waterproof cover 30.

[0030] The labyrinth flange 60 is fixed to the shaft seat 10. The labyrinth flange 60 is located inside the waterproof cover 30 and between the shaft seat 10 and the main shaft 20. The labyrinth flange 60 is provided with a protrusion 61 facing the main shaft 20, which is installed in the recess of the main shaft 20 and forms a labyrinth structure with the main shaft 20. The number of protrusions 61 is multiple, and the extension direction of the multiple protrusions 61 is perpendicular to the axis of the main shaft 20. The labyrinth flange 60 is provided with a sealing groove 62 facing the shaft seat 10, which is used to install the second sealing ring 70, and the second sealing ring 70 is in contact with the shaft seat 10, sealing the shaft seat 10 and the labyrinth flange 60.

[0031] When assembling the waterproof structure of the end of the main shaft, the waterproof cover 30 is fixed to the main shaft 20 by the fastener 80, and the first sealing ring 40 is located between the waterproof cover 30 and the main shaft 20, sealing the gap between the shaft seat 10 and the main shaft 20. The water baffle ring 50 is fixed to the shaft seat 10, and the top of the water baffle ring 50 is located in the groove 32, sealing the water baffle ring 50 and the waterproof cover 30. The labyrinth flange 60 is fixed to the shaft seat 10, and the protrusion 61 of the labyrinth flange 60 is installed in the recess of the main shaft 20 and forms a labyrinth structure with the main shaft 20. The second sealing ring 70 is installed in the labyrinth flange 60 and in contact with the shaft seat 10, sealing the shaft seat 10 and the labyrinth flange 60. Through the above design, the first sealing ring 40 seals between the waterproof cover 30 and the main shaft 20, and the water baffle ring 50 is partially located in the groove 32 to form a seal, further preventing the cutting fluid from entering the main shaft 20.

[0032] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvement evolutions can be made, which are equivalent modification and evolution of the above embodiments according to the utility model essential technology, and these all belong to the protection range of the utility model.

Claims

1. A waterproof structure for the end of a spindle, comprising a bearing seat and a spindle, wherein the spindle is rotatably mounted inside the bearing seat, characterized in that: The waterproof structure at the end of the spindle also includes a waterproof cover, a first sealing ring, and a water-retaining ring. The waterproof cover is fixed to the end of the spindle. The first sealing ring is installed between the waterproof cover and the spindle. The axis of the first sealing ring coincides with the axis of the spindle. The water-retaining ring is fixed to the shaft seat. The end of the waterproof cover is provided with a groove. The extension direction of the groove is the same as the axial direction of the spindle. The water-retaining ring is located in the groove.

2. The waterproof structure at the spindle end according to claim 1, characterized in that: The inner wall of the waterproof cover is provided with an installation groove, and the first sealing ring is installed in the installation groove and contacts the outer wall of the main shaft.

3. The waterproof structure at the spindle end according to claim 1, characterized in that: The waterproof structure at the end of the spindle also includes a labyrinth flange, which is fixed to the shaft seat and located inside the waterproof cover and between the shaft seat and the spindle.

4. The waterproof structure at the spindle end according to claim 3, characterized in that: The waterproof structure at the end of the spindle also includes a second sealing ring, which is installed between the labyrinth flange and the shaft seat.

5. The waterproof structure at the spindle end according to claim 4, characterized in that: The labyrinth flange has a sealing groove on the side facing the shaft seat, and the second sealing ring is installed in the sealing groove.

6. The waterproof structure at the spindle end according to claim 3, characterized in that: The labyrinth flange includes protruding teeth, which are mounted on the main shaft to form a labyrinth structure.

7. The waterproof structure at the spindle end according to claim 6, characterized in that: The number of protruding teeth is multiple, and the extension direction of the maze structure formed by the multiple protruding teeth is perpendicular to the axis of the main shaft.

8. The waterproof structure at the spindle end according to claim 6, characterized in that: The water-retaining ring and the labyrinth flange are located on the same horizontal line.

9. A machine tool, characterized in that: The machine tool includes a waterproof structure at the spindle end as described in any one of claims 1-8.

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