WO2020037846A1

WO2020037846A1 - Waterproof structure for rear end of horizontal spindle

Info

Publication number: WO2020037846A1
Application number: PCT/CN2018/115401
Authority: WO
Inventors: 明希军; 汤秀清
Original assignee: 广州市昊志机电股份有限公司
Priority date: 2018-08-21
Filing date: 2018-11-14
Publication date: 2020-02-27
Also published as: CN109067065B; CN109067065A

Abstract

The invention discloses a waterproof structure for a rear end of a horizontal spindle, the waterproof structure comprising a spindle core, a bearing locking nut, a rear end cover and a body, wherein the spindle core is arranged inside the body in a penetrating manner; the rear end cover is arranged between the spindle core and the body, and is fixed to the rear end of the body; a first water guide groove is arranged between the rear end cover and the body; the bearing locking nut is arranged between the rear end cover and the spindle core and is fixed to the spindle core; a water throwing groove and a second water guide groove are arranged between the bearing locking nut and the rear end cover; the water guide groove is arranged on an outer side of the water throwing groove and is in communication with the water throwing groove; and the rear end cover is further provided with a first drainage channel, the first drainage channel is respectively in communication with the first water guide groove and the second water guide groove, and the first drainage channel is in communication with the outside. According to the waterproof structure for the rear end of a horizontal spindle of the present invention, by means of the cooperation of the first water guide groove, the second water guide groove and the water throwing groove, the waterproofness of the rear end of the horizontal spindle can be realized so as to ensure the maintained precision of the horizontal spindle.

Description

Waterproof structure of rear end of horizontal main shaft

Technical field

The invention relates to a waterproof structure, in particular to a waterproof structure at the rear end of a horizontal spindle.

Background technique

At present, horizontal spindles are often used to process parts and components in industrial processing, and the accuracy and efficiency directly affect the quality and output of the finished product. Due to the gap between the shaft core, bearing lock nut, and rear end cover of the horizontal spindle This makes foreign matter such as condensed water, hydraulic oil, cutting fluid, or dust easily enter the horizontal spindle from the rear end of the horizontal spindle, which is not conducive to maintaining the accuracy of the horizontal spindle.

Summary of the Invention

In order to overcome the shortcomings of the prior art, an object of the present invention is to provide a rear-end waterproof structure of a horizontal main shaft, which realizes the horizontal main shaft through the cooperation of a first water guide groove, a second water guide groove and a water throwing groove. The rear end is waterproof to ensure the accuracy of the horizontal spindle is maintained.

The objective of the present invention is achieved by the following technical solutions:

A horizontal main shaft rear end waterproof structure includes a shaft core, a bearing lock nut, a rear end cover and a body; the shaft core is penetrated in the body; and the rear end cover is provided in the shaft core and the body. A first water channel is provided between the rear end cover and the body, and the bearing lock nut is provided between the rear end cover and the body. Between the shaft core and fixed on the shaft core; a water throw groove and a second water guide groove are provided between the bearing lock nut and the rear end cover; and the water guide groove is provided in the The outside of the water throwing trough is in communication with the water throwing trough; the rear end cover is also provided with a first drainage channel, and the first drainage channel is respectively connected with the first water channel and the second water channel The groove is in communication, and the first drainage channel is in communication with the outside.

Further, the number of the water throwing grooves is plural, and the plurality of water throwing grooves are sequentially arranged along the axial direction of the shaft core.

Further, a part of the groove wall of the water throwing groove is formed as a guide surface, and the guide surface is gradually inclined from the side close to the shaft core to the other side thereof toward the rear end direction of the lock cylinder.

Further, the horizontal main shaft rear end waterproof structure includes a bearing inner ring gland, and the bearing inner ring gland is disposed at the front end of the bearing lock nut and is located between the rear end cover and the shaft core. between. The bearing inner ring gland is fixed in the shaft core, and a third water guide groove is formed between the bearing and the rear end cover; the third water guide groove is in communication with the first drainage channel.

Further, the rear end of the rear end is further provided with an arc-shaped waterproof groove, and the notch of the arc-shaped waterproof groove faces away from the bearing lock nut.

Further, the bearing lock nut has a portion protruding from a rear end of the rear end cover, and the portion is formed as a protruding portion; a side of the protruding portion remote from the shaft core is provided toward the shaft core. Curved waterproof notch with directional depression.

Further, the second water guiding groove is opened on the rear end cover; the water throwing groove is opened on the bearing lock nut.

Further, the body is provided with a first notch, and the rear end cover is provided with a second notch, and the second notch and the second notch are enclosed to form the first water channel.

Further, a second drainage channel is formed on the rear end cover, and the second water channel is communicated with the first drainage channel through the second drainage channel.

Compared with the prior art, the beneficial effects of the present invention are:

The present invention prevents external impurities from entering the horizontal main shaft from between the rear end cover and the body through the cooperation of the first water guiding groove and the first drainage channel, and the second water guiding groove, the water throwing groove and the first drainage The cooperation between the three channels prevents external impurities from entering the horizontal spindle from between the rear end cover and the bearing lock nut, thereby achieving waterproofing of the rear end of the horizontal spindle and ensuring the accuracy of the horizontal spindle.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a structural schematic diagram of a rear end waterproof structure of a horizontal spindle of the present invention;

FIG. 2 is an enlarged view of a part A in FIG. 1 according to the present invention.

In the picture: 10, shaft core; 20, bearing lock nut; 21, waterproof notch; 30, rear cover; 31, waterproof groove; 40, body; 50, first water channel; 60, water throwing groove; 61 Guide surface; 70; second water channel; 80; first drainage channel; 90; second channel; 100; inner ring gland of bearing; 110; third water channel.

detailed description

In the following, the present invention is further described with reference to the drawings and specific embodiments. It should be noted that, under the premise of no conflict, the embodiments described below or technical features can be arbitrarily combined to form a new embodiment. .

As shown in Figure 1-2, a horizontal main shaft rear end waterproof structure includes a shaft core 10, a bearing lock nut 20, a rear end cover 30, and a body 40; the shaft core 10 is passed through the body 40; The rear end cover 30 is disposed between the shaft core 10 and the body 40 and is fixed on the rear end of the body 40. A first water guide groove 50 is provided between the rear end cover 30 and the body 40. The bearing A lock nut 20 is disposed between the rear end cover 30 and the shaft core 10 and is fixed on the shaft core 10; a water-swing groove 60 and a second guide are provided between the bearing lock nut 20 and the rear end cover 30. A water drainage groove 70; the water drainage groove is disposed outside the water throwing groove 60 and communicates with the water throwing groove 60; the rear end cover 30 is also provided with a first drainage channel 80, and the first drainage channel 80 is respectively connected to the first drainage channel 80 The water guide groove 50 is in communication with the second water guide groove 70, and the first drainage channel 80 is in communication with the outside.

In this way, when the horizontal main shaft is in a non-working state, that is, the horizontal main shaft is in a stationary state, when external liquid penetrates the horizontal main shaft along the gap between the body 40 and the rear end cover 30, the external liquid flows to the first water guide The position of the groove 50 is blocked by the first water-conducting groove 50 and continues to penetrate into the horizontal main shaft, and the infiltrated liquid is collected at the first water-conducting groove 50, and then the liquid is collected by gravity The first drainage channel 80 is discharged out of the horizontal spindle along the first drainage channel 80, and plays a waterproof role; when external liquid penetrates between the rear end cover 30 and the bearing lock nut 20, the external liquid flows To the position of the second water guide groove 70 and the water chute 60 and blocked by the second water guide groove 70 and the water chute 60 from continuing to penetrate into the horizontal main shaft, and the infiltrated liquid is in the second water guide groove 70 and the water-sinking tank 60 are pooled, and then the liquid is collected by gravity to the first drainage channel 80, and is discharged along the first drainage channel 80 out of the horizontal main shaft to play a waterproof function, thereby realizing the horizontal main shaft. waterproof.

In addition, when the horizontal spindle is in the working state, that is, the shaft core 10 of the horizontal spindle is in a rotating state, the liquid enters the horizontal type along the gap between the bearing lock nut 20 and the rear end cover 30 of the shaft core 10 in an inflow manner. The main shaft and the shaft core 10 are rotated by external power. At this time, the bearing lock nut 20 rotates with the shaft core 10. Under the centrifugal force of the rotation of the shaft core 10, the liquid enters the water chute 60 or the second water guide groove 70. Further, the liquid of the second water guiding groove 70 flows to the first drainage channel 80 under its own force and is discharged, and the liquid entering the water shaking groove 60 is thrown into the second water guiding groove 70 under the action of centrifugal force. Then, it is discharged from the first drainage channel 80 to realize the horizontal spindle mode.

In the above process, through the cooperation of the first water guide groove 50, the second water guide groove 70, the water throwing groove 60, and the first drainage channel 80, waterproofing is achieved around the horizontal main shaft, and the horizontal main shaft is different. Waterproof under working conditions, thereby ensuring the accuracy of the horizontal spindle is maintained; further, the first water guide groove 50, the second water guide groove 70, the water throwing groove 60 and the first drainage channel 80 are simple to set up and relatively The labyrinth structure is used for waterproofing, and it is not necessary to use multiple accessories to change to this labyrinth structure, simplifying the installation process and saving assembly man-hours.

In order to achieve a variety of waterproofing, preferably, there are a plurality of water throwing grooves 60. The plurality of water throwing grooves 60 are arranged in sequence along the axial direction of the shaft core 10. When external liquid enters the horizontal spindle, the liquid needs to undergo multiple water throwing grooves 60. To achieve multiple blocking of liquids. The number of the above-mentioned first water guiding grooves 50 and second water guiding grooves 70 may also be set to two or more, and two or more first water guiding grooves 50 and second water guiding grooves may be provided. The grooves 70 are sequentially arranged along the axial direction of the shaft core 10.

Preferably, a part of the groove wall of the throwing water tank 60 is formed as a guide surface 61, and the guide surface 61 is gradually inclined from the side close to the shaft core 10 to the other side thereof toward the rear end of the locking lock nut; During the rotation, part of the liquid collected in the throwing water tank 60 is directly thrown out of the horizontal main shaft under the guidance of the guide surface 61 and the centrifugal force during the rotation of the shaft core 10 to achieve further waterproofing.

Further, the horizontal spindle rear end waterproof structure includes a bearing inner ring gland 100. The bearing inner ring gland 100 is disposed at the front end of the bearing lock nut 20 and is located between the rear end cover 30 and the shaft core 10. The bearing inner ring gland 100 is fixed in the shaft core 10 and forms a third water guide groove 110 between the rear end cover 30; the third water guide groove 110 communicates with the first drainage channel 80; thus, the external liquid When entering the gap between the bearing inner ring gland 100 and the shaft core 10 through the gap between the bearing lock nut 20 and the shaft core 10, the external liquid is further blocked by the third water-conducting communication, and plays a further waterproof role.

Specifically, the cross section of the water throwing tank 60 is a right-angled triangle, and the inclined groove wall of the water throwing tank 60 is formed as the guide surface 61.

Preferably, the rear end of the rear end cover 30 is also provided with an arc-shaped waterproof groove 31, and the notch of the arc-shaped waterproof groove 31 faces away from the bearing lock nut 20; thus, the external liquid flows from along the body 40 and the rear end cover 30. When the rear end surface flows downward, it will collect in the waterproof groove 31, and flow down along the arc-shaped waterproof groove 31 under the action of gravity, thereby preventing liquid from entering between the rear end cover 30 and the bearing lock nut 20 to achieve external waterproofing. Improve waterproof performance. The above-mentioned arc-shaped waterproof groove 31 may be a ring-shaped structure extending along the circumferential direction of the shaft core 10 to achieve comprehensive waterproofing. It should be noted here that the ring-shaped means that the extension track is a closed structure from end to end. Shape, oval or square, etc.

Further, the bearing lock nut 20 has a portion protruding from the rear end of the rear end cover 30, and the portion is formed as a protruding portion; a side of the protruding portion remote from the shaft core 10 is provided with a ring-shaped step waterproof recess which is recessed in the direction of the shaft core 10 21; In this way, when the external liquid flows to the side of the bearing lock nut 20 away from the shaft core 10, the external liquid is trapped by the arc-shaped waterproof notch 21, and collects in the arc-shaped waterproof notch 21, and runs along under its own action. The waterproof notch 21 flows down, thereby preventing liquid from entering between the rear end cover 30 and the bearing lock nut 20 to achieve external waterproofing and further improve the waterproof performance; the above-mentioned arc-shaped waterproof notch 21 and the arc-shaped waterproof groove 31 can be used together In this way, the double waterproof of the gap between the multi-bearing lock nut 20 and the rear end cover 30 can be achieved.

The above-mentioned annular step waterproof notch 21 may be an annular structure extending along the circumferential direction of the shaft core 10 in order to achieve comprehensive waterproofing. It should be noted here that the annular shape means that the extension track is a closed structure from end to end, and the annular shape is not limited to a circular shape. Shape, oval or square, etc.

Specifically, the second water guide groove 70 is opened on the rear end cover 30, and the water throw groove 60 is opened on the bearing lock nut 20; further, the second water guide groove 70 and the water throw groove 60 Both can be ring-shaped structures extending along the circumference of the shaft core 10 in order to achieve comprehensive waterproofing. It should be noted here that the ring-shaped structure refers to its closed trajectory, which is not limited to circular, oval or square. and many more.

Specifically, the body 40 is provided with a first notch, the rear end cover 30 is provided with a second notch, and the second notch and the second notch enclose a first water channel 50. The above-mentioned first water-conducting groove 50 may be a ring-shaped structure extending along the circumferential direction of the shaft core 10 in order to achieve comprehensive waterproofing. It should be noted here that the ring-shaped means that the extension track is a closed structure from end to end. Limited to circular, oval or square, etc.

Further, a second drainage channel 90 is formed on the rear end cover 30, and the second water guiding groove 70 communicates with the first drainage channel 80 through the second drainage channel 90.

It should be noted that the above-mentioned first water guiding groove 50, second water guiding groove 70, water throwing groove 60, first drainage channel 80, and second drainage channel 90 can all be formed by means of a car or a drill. Formed by casting.

The above embodiments are only preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited by this. Any insubstantial changes and substitutions made by those skilled in the art based on the present invention belong to the present invention. Claimed scope.

Claims

A horizontal main shaft rear end waterproof structure is characterized in that it includes a shaft core, a bearing lock nut, a rear end cover and a body; the shaft core is penetrated in the body; and the rear end cover is provided in the body. A first water-guiding groove is provided between the rear end cover and the body between a shaft core and the body, and is fixed on a rear end of the body; the bearing lock nut is provided at the rear Between the end cover and the shaft core, and fixed on the shaft core; between the bearing lock nut and the rear end cover, a water throw groove and a second water guide groove are provided; the water guide groove A trough is disposed outside the water throwing trough and communicates with the water throwing trough; the rear end cover is also provided with a first drainage passage, and the first drainage passage is respectively connected to the first water guiding groove and the first The two water-conducting grooves communicate with each other, and the first drainage channel communicates with the outside.
The waterproof structure of the rear end of the horizontal spindle according to claim 1, wherein there are a plurality of said water throwing grooves, and a plurality of said water throwing grooves are arranged in order along the axial direction of said shaft core.
The waterproof structure of the rear end of the horizontal spindle according to claim 1, wherein a part of the groove wall of the water throwing groove is formed as a guide surface, and the guide surface runs from one side close to the shaft core to the other. The side is gradually inclined toward the rear end of the locking lock.
The rear-end waterproof structure of the horizontal main shaft according to claim 1, characterized in that the rear-end waterproof structure of the horizontal main shaft comprises a bearing inner ring gland, and the bearing inner ring gland is provided on the bearing lock nut. The front end of the bearing is located between the rear end cover and the shaft core; the bearing inner ring gland is fixed in the shaft core, and a third water guide groove is formed between the bearing inner ring gland and the rear end cover; The third water channel is in communication with the first drainage channel.
The waterproof structure of the rear end of the horizontal spindle according to claim 1, wherein an arc-shaped waterproof groove is further provided at the rear end of the rear end, and the notch of the arc-shaped waterproof groove faces away from the bearing lock nut. .
The waterproof structure of the rear end of the horizontal spindle according to any one of claims 1-5, wherein the bearing lock nut has a portion protruding from the rear end of the rear end cover, and the portion is formed to protrude An arc-shaped waterproof notch recessed in the direction of the shaft core is provided on a side of the protruding portion remote from the shaft core.
The waterproof structure of the rear end of the horizontal spindle according to claim 1, characterized in that: the second water guide groove is opened on the rear end cover; and the water throw groove is opened on the bearing lock nut. .
The rear-end waterproof structure of a horizontal spindle according to claim 1, wherein a first notch is opened on the body, a second notch is opened on the rear end cover, the second notch and the second notch The gap surrounds the first water-conducting groove.
The waterproof structure of the rear end of the horizontal spindle according to claim 1, wherein a second drainage channel is formed on the rear end cover, and the second water channel is communicated with the second drainage channel through the second drainage channel. The first drainage channel communicates.