WO2019114483A1

WO2019114483A1 - Air cooling structure for lathe spindle

Info

Publication number: WO2019114483A1
Application number: PCT/CN2018/115374
Authority: WO
Inventors: 卢云飞; 汤秀清
Original assignee: 广州市昊志机电股份有限公司
Priority date: 2017-12-12
Filing date: 2018-11-14
Publication date: 2019-06-20
Also published as: CN108097986A; CN108097986B

Abstract

An air cooling structure for a lathe spindle. The structure comprises a main body (10) and an upper bearing (30). The upper bearing (30) is fixed to the main body (10). The main body (10) is provided with an upper air channel (14), an annular upper air distribution channel (15), and a plurality of upper ventilation holes (16). The upper air channel (14) and the upper ventilation holes (16) are in communication with the upper air distribution channel (15). The upper ventilation holes (16) are uniformly distributed on the upper air distribution channel (15). The upper ventilation holes (16) face the upper bearing (30). A blowing device is in communication with the upper air channel (14), so that an air flow is blown to the upper bearing (30) from the upper ventilation holes (16) after traveling in the upper air distribution channel (15). The air flows through the interior of the upper bearing, takes away heat on the upper bearing, and then flows out from a gap at a rear end. Thus, a cooling effect is achieved. Water vapor and dirt in gaps at the front and rear ends are blown away, thereby achieving an air curtain sealing function.

Description

Lathe spindle air-cooled structure

Technical field

The invention relates to the field of machining, and in particular to an air-cooling structure for a lathe main shaft.

Background technique

At present, with the increase of industrialization, more and more machining equipment is applied to the factory equipment. As a common structure, the bearing is often used in production equipment to improve the processing efficiency.

However, the existing lathe spindle structure has the following drawbacks:

The lathe spindle structure on the market has poor heat dissipation effect, which limits the use speed of the bearing and is not conducive to the improvement of machining efficiency. Limiting the bearing can only exert a small pre-tightening force, which is not conducive to the increase of the rigidity and load bearing capacity of the main shaft. The high spindle temperature results in large thermal deformation and affects spindle machining accuracy.

Summary of the invention

In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide an air-cooling structure for a lathe main shaft, which can solve the problem of inconvenient heat dissipation.

One of the objects of the present invention is achieved by the following technical solutions:

An air-cooling structure for a lathe main shaft includes a main body and an upper bearing, wherein the upper bearing is fixed to the main body, and the main body is provided with an upper air passage, an upper uniform air passage and a plurality of upper ventilation holes, and the upper air passage and the upper air passage The upper vent holes are respectively connected to the upper air passage, the upper air passage is annular, the upper vent is communicated with the inner portion of the upper bearing, and the upper vent is evenly distributed on the upper air passage. The upper vent hole faces the upper bearing, and an air blowing device communicates with the upper air passage to pass the airflow through the upper air venting passage, and blows from the upper vent hole to the upper bearing to lower the temperature.

Further, the main body includes a spacer sleeve and a sleeve, and the spacer sleeve is fixed in the sleeve, and the spacer sleeve and the sleeve are respectively provided with grooves, and the upper air passage is formed between the grooves. The lathe main shaft air-cooling structure further includes an upper sealing ring located between the spacer and the sleeve and located adjacent to the upper uniform gas passage.

Further, the upper equal gas passage is perpendicular to the upper air passage.

Further, the upper equal gas passage has a truncated cone shape.

Further, the axes of the spacer sleeve, the sleeve and the upper bearing are on the same straight line.

Further, the main body is further provided with a central hole, and the central hole has a cylindrical shape.

Further, the main body is further provided with a lower air passage, a lower equal air passage and a lower vent hole, wherein the lower air passage and the lower vent hole are respectively communicated with the lower equal air passage, and the lower equal air passage is a ring shape, the lower vent hole is evenly distributed on the lower air venting passage, the lathe main shaft air cooling structure further includes a lower bearing, the lower bearing is fixed to the main body, and the lower vent hole faces the lower bearing .

Further, the upper bearing and the lower bearing are respectively located on opposite sides of the main body.

Further, the axes of the upper bearing and the lower bearing are on the same straight line.

Further, the lathe main shaft air-cooling structure further includes a lower sealing ring, the main body includes a spacer sleeve and a sleeve, the spacer sleeve is fixed in the sleeve, and the lower sealing ring is located in the spacer sleeve and the seat Between the sleeves and located near the lower aeration passage.

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

The air blowing device is in communication with the upper air passage, and after the airflow is surrounded by the upper air passage, the air is blown from the upper air vent to the upper bearing, and the air flows through the inner bearing, and the heat of the upper bearing is taken away. The gap at the end is blown out to achieve the cooling effect, and the water vapor and dirt in the gap between the front and rear ends are blown away to realize the function of the air curtain sealing.

The above description is only an overview of the technical solutions of the present invention, and the above-described and other objects, features and advantages of the present invention can be more clearly understood. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings.

DRAWINGS

Figure 1 is a cross-sectional view showing a preferred embodiment of the air-cooling structure of a lathe spindle of the present invention;

Figure 2 is a cross-sectional view of the lathe main shaft air-cooling structure A-A of Figure 1;

Figure 3 is a cross-sectional view of the lathe main shaft air-cooling structure B-B of Figure 1.

In the figure: 100, air-cooled structure of lathe spindle; 10, main body; 11, spacer; 12, sleeve; 13, central hole; 14, upper gas path; 15, upper gas channel; Lower air path; 18, lower air passage; 19, lower vent; 20, upper seal; 30, upper bearing; 40, lower seal; 50, lower bearing.

Detailed ways

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments described below may be arbitrarily combined to form a new embodiment. .

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 the component can be present. When a component is considered to "connect" another component, it can be directly connected to another component or possibly a central component. When a component is considered to be "set to" another component, it can be placed directly on another component or possibly with a centered component. The terms "vertical," "horizontal," "left," "right," and the like, as used herein, are for illustrative purposes only.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to FIGS. 1-3, a lathe main shaft air cooling structure 100 includes a main body 10, an upper seal ring 20, an upper bearing 30, a lower seal ring 40, and a lower bearing 50.

The main body 10 includes a spacer 11 and a sleeve 12, and the spacer 11 is fixed in the sleeve 12. The main body 10 is provided with a central hole 13. The spacer 11 and the sleeve 12 are respectively provided with a groove. An upper equalizing air passage 15 and a lower equal air passage 18 are formed between the grooves, and the upper uniform air passage 15 and the lower equal air passage 18 are surrounded by the central hole 13, and the central hole 13 has a cylindrical shape, and the upper uniform air passage 15 and the lower equal gas are formed. The passage 18 has a truncated cone shape; the upper equal air passage 15 and the lower equal air passage 18 are located on opposite sides of the main body 10; the main body 10 is further provided with an upper air passage 14 and a plurality of upper vent holes 16, the upper air passage 14 and the upper portion The venting holes 16 are respectively communicated with the upper air venting passages 15, and the upper venting holes 16 are evenly distributed on the upper air venting passages 15; the main body 10 is further provided with a lower air passage 17 and a plurality of lower venting holes 19, The lower air passage 17 and the lower vent hole 19 are respectively in communication with the lower equal air passage 18, and the lower vent hole 19 is evenly distributed on the lower equal air passage 18. The upper equal air passage 15 is perpendicular to the upper air passage 14, and the lower equal air passage 18 is perpendicular to the lower air passage 17.

When the lathe main shaft air-cooling structure 100 is assembled, the upper bearing 30 and the lower bearing 50 are fixed to the main body 10, and the upper bearing 30 and the lower bearing 50 are respectively located on opposite sides of the main body 10, the upper bearing 30 and the The axes of the lower bearings 50 are on the same line; the upper seal ring 20 is located between the spacer 11 and the sleeve 12 and is located adjacent the upper equal gas passage 15, the upper vent 16 facing the The upper bearing 30, an air blowing device is in communication with the upper air passage 14, so that the airflow is surrounded by the upper air-passing passage 15, and is blown from the upper vent hole 16 toward the upper bearing 30, and the air flows through the upper bearing 30. The heat of the upper bearing 30 is taken away, and is blown out through the gap at the rear end to achieve the cooling effect, and the water vapor and dirt in the gaps at the front and rear ends are blown away to realize the function of the air curtain sealing; the lower sealing ring 40 is located in the spacer 11 and The sleeves 12 are located in the vicinity of the lower equal gas passage 18 to prevent leakage of compressed air and improve the blowing effect. The lower vent holes 19 face the lower bearing 50, an air blowing device and the lower air passage 17 Connecting, after the airflow is surrounded by the lower uniform air passage 18, from the lower vent 19 Next to the bearing 50, the lower vent hole 19 is blown from the lower bearing 50, the spacer 11, sleeve 12, and the lower bearing 30 on the bearing axis 50 in the same line.

The above embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention belong to the present invention. The scope of the claim.

Claims

An air-cooling structure for a lathe main shaft, comprising a main body and an upper bearing, wherein: the upper bearing is fixed to the main body, and the main body is provided with an upper air passage, an upper equal air passage and a plurality of upper vent holes, wherein the upper portion The upper air passage and the upper air vent are respectively communicated with the upper air passage, the upper air passage is annular, the upper vent is communicated with the inner portion of the upper bearing, and the upper vent is evenly distributed The upper venting passage faces the upper bearing, and an air blowing device communicates with the upper air passage to pass the airflow through the upper air venting passage, and blows the upper venting hole toward the upper bearing Reduce the temperature.
The air-cooling structure for a lathe main shaft according to claim 1, wherein the main body comprises a spacer sleeve and a sleeve, the spacer sleeve is fixed in the sleeve, and the spacer sleeve and the sleeve are respectively provided with a concave shape. a groove, an upper equal gas passage is formed between the grooves, the lathe main shaft air-cooling structure further includes an upper sealing ring, the upper sealing ring being located between the spacer sleeve and the sleeve and located on the upper Near the gas passage.
The lathe main shaft air-cooling structure according to claim 2, wherein said upper equal air passage is perpendicular to said upper air passage.
The air-cooling structure for a lathe main shaft according to claim 3, wherein said upper equal air passage has a truncated cone shape.
The lathe main shaft air-cooling structure according to claim 2, wherein the spacer, the sleeve and the upper bearing have the same axis.
The air-cooling structure for a lathe main shaft according to claim 1, wherein the main body is further provided with a center hole, and the center hole has a cylindrical shape.
The air-cooling structure for a lathe main shaft according to claim 1, wherein the main body further comprises a lower air passage, a lower equal air passage and a lower vent, wherein the lower air passage and the lower vent are respectively The lower air passage is connected to the air, the lower air passage is annular, and the lower air vent is evenly distributed on the lower air passage. The lathe main shaft air cooling structure further includes a lower bearing, and the lower bearing is fixed to The main body, the lower vent hole faces the lower bearing.
A lathe main shaft air-cooling structure according to claim 7, wherein said upper bearing and said lower bearing are respectively located on opposite sides of said main body.
The lathe main shaft air-cooling structure according to claim 7, wherein the axes of the upper bearing and the lower bearing are on the same straight line.
The air-cooling structure for a lathe main shaft according to claim 7, wherein the air-cooling structure of the lathe main shaft further comprises a lower sealing ring, the main body comprises a spacer sleeve and a sleeve, and the spacer sleeve is fixed to the sleeve The lower seal ring is located between the spacer sleeve and the sleeve and is located adjacent to the lower equal gas passage.