Spiral drainage grinding machine main shaft

Abstract

The utility model discloses a spiral drainage grinding machine main shaft which comprises a shell, bearings, a shaft core, a front cover, a rear cover, a shaft shoulder, an outer cover, a water collecting cavity and a drainage hole, a group of bearings which are coaxially aligned are arranged in the shell, the shaft core is arranged in the bearings, the front cover and the rear cover are arranged at the two ends of the shell, and the two ends of the shaft core penetrate out of the front cover and the rear cover. The shaft core is provided with a circle of shaft shoulder on the outer side of the front cover, an outer cover covering the whole shaft shoulder is installed on the front cover, the front cover and the outer cover surround the shaft shoulder and form a water collecting cavity, and the front cover is provided with a drainage hole communicated with the water collecting cavity. By means of the mode, the spiral drainage grinding machine main shaft accumulates seepage water through the water collecting cavity defined by the outer cover, the effective interception area of the seepage water is expanded through the spiral drainage groove, and therefore a spiral waterline can be formed under the action of centrifugal force and is drained out of the drainage holes in order. Water seepage and accumulation at the gap of the front cover are fully avoided, and the overall sealing performance is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grinding machine spindle, especially relates to a spiral drainage grinding machine spindle. BACKGROUND

[0002] The front end of the grinding machine spindle is provided with a tool head, and the front cover close to the tool head is exposed to the liquid spraying environment for a long time in the high-speed rotation process of the shaft core. Since there is a gap between the shaft core and the front cover, water seepage often occurs at the gap. The water seepage is difficult to leave the gap under the action of centrifugal force, and the long-term erosion of the metal parts inside the shell by the water seepage that penetrates through the gap into the shell will cause corrosion and wear of the bearing and the shaft core and other components, thereby shortening the overall service life of the spindle. SUMMARY

[0003] The utility model mainly solves the technical problem to provide a spiral drainage grinding machine spindle, through the water collection cavity surrounded by the outer cover to accumulate water seepage, and utilize spiral drainage groove to expand water seepage effective interception area, can form spiral water line under the action of centrifugal force, orderly discharge from the drainage hole, fully avoid the seepage accumulation phenomenon in the front cover gap, greatly improve the overall sealing performance.

[0004] To solve the above technical problems, one technical scheme of the utility model is provided: a spiral drainage grinding machine spindle, comprising a shell, a bearing, a shaft core, a front cover, a rear cover, a shaft shoulder, an outer cover, a water collection cavity and a drainage hole, a group of coaxial bearings are arranged in the shell, the shaft core is arranged in the bearing, the front cover and the rear cover are arranged at both ends of the shell, the shaft core passes out from the front cover and the rear cover at both ends, a ring of shaft shoulders is arranged outside the front cover, the outer cover is installed on the front cover to cover the entire shaft shoulder, the front cover and the outer cover surround the shaft shoulder and form a water collection cavity, and the front cover is provided with a drainage hole communicating with the water collection cavity.

[0005] In a preferred embodiment of the utility model, spiral drainage grooves are formed on the front cover and the outer cover, the spiral drainage grooves are distributed on the inner wall of the water collection cavity, and the spiral drainage grooves communicate with the drainage hole.

[0006] In a preferred embodiment of the utility model, the front cover and the rear cover are provided with integrally formed first clamping hooks, the outer wall of the shaft core is provided with a clamping ring, the clamping ring is provided with integrally formed second clamping hooks, and the first clamping hooks and the second clamping hooks are matched and clamped.

[0007] The spiral drainage grinding machine spindle provided by the utility model can accumulate water seepage through the water collection cavity surrounded by the outer cover, expand the effective interception area of water seepage by using the spiral drainage groove, form a spiral water line under the action of centrifugal force, orderly discharge from the drainage hole, fully avoid the seepage accumulation phenomenon in the front cover gap, and greatly improve the overall sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings, wherein:

[0009] Figure 1 is a structure diagram of a preferred embodiment of a spiral drainage grinding machine spindle of the present application. DETAILED DESCRIPTION

[0010] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0011] As shown in Figure 1 the embodiment of the present application includes:

[0012] A spiral drainage grinding machine spindle, comprising a shell 1, a bearing 2, a shaft core 3, a front cover 4, a rear cover 5, a shaft shoulder 6, an outer cover 7, a water collecting cavity 8, and a drainage hole 9, a group of coaxial bearings 2 are arranged in the shell 1, the shaft core 3 is arranged in the bearing 2, the front cover 4 and the rear cover 5 are arranged at both ends of the shell 1, the shaft core 3 passes out from the front cover 4 and the rear cover 5 at both ends, a ring of shaft shoulders 6 is arranged outside the front cover 4, the outer cover 7 covering the entire shaft shoulder 6 is installed on the front cover 4, the front cover 4 and the outer cover 7 surround the shaft shoulder 6 and form a water collecting cavity 8, and the front cover 4 is provided with a drainage hole 9 communicating with the water collecting cavity 8.

[0013] Among them, the front cover 4 and the outer cover 7 are provided with spiral drainage grooves 10, the spiral drainage grooves 10 are distributed on the inner wall of the water collecting cavity 8, and the spiral drainage grooves 10 communicate with the drainage hole 9.

[0014] Further, the front cover 4 and the rear cover 5 are each provided with a first clamping hook 11 integrally formed, the outer wall of the shaft core 3 is provided with a clamping ring 12, the clamping ring 12 has a second clamping hook integrally formed, and the first clamping hook 11 and the second clamping hook are matched and clamped with each other.

[0015] In the processing of the product, water seepage will seep from the gap of the outer cover 7 to the water collecting cavity 8, and in the process of high-speed rotation of the main shaft, the water seepage will be accumulated in the spiral drainage groove 10 under the action of centrifugal force, and since the spiral drainage groove 10 is densely arranged in the spiral manner in the entire water collecting cavity 8, the contact area between the inner wall of the water collecting cavity 8 and the water seepage can be multiplied, thereby improving the effective water storage capacity of the water collecting cavity 8. The water seepage is temporarily stored in the entire water collecting cavity 8, thereby blocking the spread of the water seepage to the bearing 2. In order to maximize the storage of water seepage, the drainage hole 9 is designed at the end of the spiral drainage groove 10, and the water seepage forms a spiral water line through the spiral drainage groove 10, and finally reaches the drainage hole 9 and is automatically thrown out under the action of centrifugal force. In order to further prevent the water seepage accumulated in the water collecting cavity 8 from accidentally splashing to the bearing 2, a plurality of matched clamping hooks are additionally arranged on the front cover 4 and the clamping ring 12, and the two clamping hooks are matched to form an s-shaped water blocking bend, which can fully ensure that the water seepage is thrown out from the drainage hole 9. The overall waterproof performance is significantly improved.

[0016] In summary, the spiral drainage grinding machine spindle provided by the utility model can accumulate water seepage through the water collecting cavity 8 surrounded by the outer cover 7, and expand the effective interception area of the water seepage by using the spiral drainage groove 10, so that a spiral water line can be formed under the action of centrifugal force, and the water seepage can be orderly discharged from the drainage hole 9, thereby avoiding the accumulation of water seepage at the gap of the front cover 4 and greatly improving the overall sealing performance.

[0017] The above-mentioned is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion or direct or indirect application in other related technical fields by using the content of the utility model specification is also included in the patent protection range of the utility model.

Claims

1. A spiral drainage grinding machine spindle, characterized in that, The device includes a housing, bearings, a shaft core, a front cover, a rear cover, a shaft shoulder, an outer cover, a water collection cavity, and a drain hole. A set of coaxially aligned bearings are installed inside the housing, and a shaft core is installed inside the bearings. A front cover and a rear cover are provided at both ends of the housing. Both ends of the shaft core extend out from the front cover and the rear cover. A shaft shoulder is provided around the outside of the front cover. An outer cover is installed on the front cover to cover the entire shaft shoulder. The front cover and the outer cover surround the shaft shoulder and form a water collection cavity. A drain hole communicating with the water collection cavity is provided on the front cover.

2. The spiral drainage grinding machine spindle according to claim 1, characterized in that, The front cover and outer cover are provided with spiral drainage grooves, which are distributed on the inner wall of the water collection cavity and are connected to the drainage holes.

3. The spiral drainage grinding machine spindle according to claim 1, characterized in that, Both the front cover and the rear cover are provided with an integrally formed first hook, and the outer wall of the shaft core is provided with a retaining ring. The retaining ring has an integrally formed second hook, and the first hook and the second hook are engaged with each other.

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