CN213765099U

CN213765099U - Cooling system and machine tool with same

Info

Publication number: CN213765099U
Application number: CN202021871827.7U
Authority: CN
Inventors: 曾琨; 罗志强; 王宇; 吴帅兵
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-07-23
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a cooling system and have its lathe. Wherein, cooling system is used for cooling the main shaft of lathe, and cooling system includes: a storage structure having a storage chamber for storing a cooling medium; the cooling body is provided with a cooling cavity, a first liquid inlet and a first liquid outlet, the cooling cavity is communicated with the storage cavity through the first liquid inlet, the first liquid outlet is communicated with the cooling cavity, and the main shaft is positioned in the cooling cavity; the heat dissipation device comprises a heat dissipation structure and a fan, and an air outlet of the fan is arranged towards the heat dissipation structure and used for cooling the heat dissipation structure; the heat dissipation structure is provided with a cache cavity, a second liquid inlet and a second liquid outlet, the first liquid outlet is communicated with the cache cavity through the second liquid inlet, and the cache cavity is communicated with the storage cavity through the second liquid outlet. The utility model discloses the main shaft of lathe produces the problem of warping owing to being heated in the operation process among the prior art effectively solved.

Description

Cooling system and machine tool with same

Technical Field

The utility model relates to a machine tool equipment technical field particularly, relates to a cooling system and have its lathe.

Background

At present, in order to ensure high precision and high speed rotation of the spindle during cutting of the machine tool, the spindle is usually in interference fit with a bearing supporting the spindle.

However, in the process of long-time rotation of the main shaft, the above-mentioned matching manner causes a lot of heat to be generated on the main shaft, and if the main shaft is not cooled in time, the main shaft is heated and deformed, thereby affecting the machining precision and the service life of the main shaft.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a cooling system and have its lathe to solve the main shaft of lathe among the prior art and produce the problem of deformation owing to being heated in the operation process.

In order to achieve the above object, according to an aspect of the present invention, there is provided a cooling system for cooling a spindle of a machine tool, the cooling system including: a storage structure having a storage chamber for storing a cooling medium; the cooling body is provided with a cooling cavity, a first liquid inlet and a first liquid outlet, the cooling cavity is communicated with the storage cavity through the first liquid inlet, the first liquid outlet is communicated with the cooling cavity, and the main shaft is positioned in the cooling cavity; the heat dissipation device comprises a heat dissipation structure and a fan, and an air outlet of the fan is arranged towards the heat dissipation structure and used for cooling the heat dissipation structure; the heat dissipation structure is provided with a cache cavity, a second liquid inlet and a second liquid outlet, the first liquid outlet is communicated with the cache cavity through the second liquid inlet, and the cache cavity is communicated with the storage cavity through the second liquid outlet.

Further, heat radiation structure sets up with the air outlet relatively, and heat radiation structure includes: the heat dissipation body is provided with a cache cavity, a second liquid inlet and a second liquid outlet; the radiating fin is arranged on the radiating body and is positioned on one side of the radiating body far away from the fan.

Further, the cooling cavity extends in the axial direction of the main shaft.

Furthermore, the number of the first liquid inlet is one, or the number of the first liquid inlets is multiple, and the multiple first liquid inlets are arranged at intervals along the circumferential direction and/or the axial direction of the main shaft; and/or the first liquid outlet is one; or the first liquid outlets are arranged at intervals along the circumferential direction and/or the axial direction of the main shaft.

Further, the number of the first liquid outlets is two, and the cooling system further comprises: a first end of the third pipeline is communicated with a first liquid outlet; and the first end of the fourth pipeline is communicated with the other first liquid outlet, the second end of the third pipeline is communicated with the fourth pipeline, and the second end of the fourth pipeline is communicated with the second liquid inlet.

Further, the heat dissipation device is arranged on the cooling body and located above the cooling body, and the at least one first liquid inlet and the at least one first liquid outlet are located on two sides of the main shaft respectively.

Further, the cooling system further includes: the first end of the first pipeline is communicated with the storage cavity; a first end of the second pipeline is communicated with the first liquid inlet; the second end of the first pipeline is communicated with the liquid inlet portion of the pump body structure, the second end of the second pipeline is communicated with the liquid outlet portion of the pump body structure, and the pump body structure is used for pumping cooling media located in the first pipeline into the second pipeline.

Further, the cooling system further includes: and the pressure regulating valve body is arranged on the second pipeline and used for regulating the pressure of the cooling medium in the second pipeline.

Further, cooling body cover is established outside the headstock, and cooling system still includes: the sealing structure is arranged between the spindle box and the cooling body; wherein the sealing structure is made of rubber or silica gel.

According to another aspect of the present invention, there is provided a machine tool, comprising a main spindle box and a cooling system, the cooling system being provided on the main spindle box; wherein, the cooling system is the cooling system.

Use the technical scheme of the utility model, at the main shaft rotation in-process, the coolant that is located the storage structure gets into the cooling intracavity through first inlet and carries out heat exchange with the main shaft to cool off the main shaft, and then solved the main shaft of lathe among the prior art and produced the problem of deformation owing to being heated in the operation process, prolonged the life of main shaft. Therefore, the cooling medium after heat exchange with the main shaft sequentially enters the cache cavity through the first liquid outlet and the second liquid inlet, and the fan cools and cools the cooling medium in the cache cavity. The cooling medium after finishing cooling flows back to the storage cavity through the second liquid outlet to carry out circulative cooling to the main shaft, promoted cooling system's cooling efficiency.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a front view of an embodiment of a cooling system according to the invention applied on a machine tool;

FIG. 2 shows a schematic perspective view of the cooling system of FIG. 1;

FIG. 3 shows a top view of the cooling system of FIG. 1; and

fig. 4 shows a side view of the cooling system of fig. 1.

Wherein the figures include the following reference numerals:

10. a storage structure; 11. an oil outlet; 12. an oil return port; 20. cooling the body; 21. a first liquid inlet; 22. a first liquid outlet; 30. a heat sink; 31. a heat dissipation structure; 311. a heat dissipation body; 312. a heat sink; 313. a second liquid inlet; 314. a second liquid outlet; 32. a fan; 40. a first pipeline; 50. a second pipeline; 60. a pump body structure; 70. a third pipeline; 80. a fourth pipeline; 90. a pressure regulating valve body; 100. and (4) a main spindle box.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, 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 application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that a main shaft of a machine tool is deformed due to heating in the operation process in the prior art, the application provides a cooling system and the machine tool with the same.

As shown in fig. 1 to 4, the cooling system is used for cooling a spindle of a machine tool, and includes a storage structure 10, a cooling body 20, and a heat sink 30. The storage structure 10 has a storage chamber for storing a cooling medium. The cooling body 20 is provided with a cooling cavity, a first liquid inlet 21 and a first liquid outlet 22, the cooling cavity is communicated with the storage cavity through the first liquid inlet 21, the first liquid outlet 22 is communicated with the cooling cavity, and the main shaft is located in the cooling cavity. The heat dissipation device 30 includes a heat dissipation structure 31 and a fan 32, and an air outlet of the fan 32 is disposed toward the heat dissipation structure 31 for cooling the heat dissipation structure 31. The heat dissipation structure 31 has a buffer cavity, a second inlet 313 and a second outlet 314, the first outlet 22 is communicated with the buffer cavity via the second inlet 313, and the buffer cavity is communicated with the storage cavity via the second outlet 314.

By using the technical scheme of the embodiment, in the rotation process of the main shaft, the cooling medium in the storage structure 10 enters the cooling cavity through the first liquid inlet 21 and exchanges heat with the main shaft, so that the main shaft is cooled, the problem that the main shaft of the machine tool is deformed due to heating in the operation process in the prior art is solved, and the service life of the main shaft is prolonged. In this way, the cooling medium that has completed heat exchange with the spindle enters the buffer cavity through the first liquid outlet 22 and the second liquid inlet 313 in sequence, and the fan 32 cools and cools the cooling medium located in the buffer cavity. The cooling medium after cooling down flows back to the storage cavity through the second liquid outlet 314, so that the main shaft is cooled in a circulating manner, and the cooling efficiency of the cooling system is improved.

In this embodiment, the cooling system can efficiently solve the cooling problem of the main shaft, so that the temperature of the main shaft is stabilized in a normal state, the machining precision of the main shaft is further ensured, and the service life of the main shaft is prolonged. Meanwhile, the cooling system in the embodiment integrates the storage structure 10, the cooling body 20 and the heat dissipation device 30 together, so that the problem that the external oil cooler occupies a large space is solved, and the cooling effect of the main shaft is ensured, and meanwhile, the machine tool is more miniaturized.

As shown in fig. 1, the storage structure 10 has an oil outlet 11 and an oil return 12. Wherein, the oil outlet 11 is communicated with the first liquid inlet 21, and the oil return port 12 is communicated with the second liquid outlet 314.

As shown in fig. 2 and fig. 3, the heat dissipation structure 31 is disposed opposite to the air outlet, and the heat dissipation structure 31 includes a heat dissipation body 311 and a heat dissipation fin 312. The heat dissipation body 311 has a buffer cavity, a second inlet 313 and a second outlet 314. The heat sink 312 is disposed on the heat dissipating body 311 and located on a side of the heat dissipating body 311 away from the fan 32. Like this, after the cooling medium after accomplishing the heat transfer with the main shaft enters into the buffer memory intracavity through second inlet 313, fan 32 and fin 312 can cool off the cooling medium that is arranged in the buffer memory chamber to reduce cooling medium's temperature, and then realized cooling medium's used repeatedly, avoid the wasting of resources. Meanwhile, the structure of the heat dissipation device 30 is simpler, the heat dissipation device is easy to process and realize, and the processing cost of the cooling system is reduced.

In the present embodiment, the cooling chamber extends in the axial direction of the main shaft. Like this, above-mentioned setting has increased the area of contact of cooling chamber with the main shaft to carry out rapid cooling to the main shaft, promoted cooling system's cooling efficiency.

Optionally, the number of the first liquid inlet 21 is one, or the number of the first liquid inlet 21 is multiple, and the multiple first liquid inlets 21 are arranged at intervals along the circumferential direction and/or the axial direction of the main shaft. In this embodiment, the cooling medium is cooling oil, and first inlet 21 is one, and a first inlet 21 communicates with oil-out 11, and then ensures that the cooling medium that is located the storage chamber can enter into the cooling chamber, has promoted cooling medium's flow reliability. Meanwhile, the cooling body 20 and the storage structure 10 are easier and simpler to disassemble and assemble due to the arrangement, and the difficulty in pipeline installation is reduced.

The number of the first liquid inlet ports 21 is not limited to this, and may be adjusted according to the use requirement. Optionally, the first liquid inlet 21 is two, or three, or four, or five, or more, to achieve rapid liquid inlet.

Optionally, there is one first liquid outlet 22; or the first liquid outlet 22 is provided in plurality, and the plurality of first liquid outlets 22 are arranged at intervals along the circumferential direction and/or the axial direction of the main shaft. In this embodiment, coolant is cooling oil, and first liquid outlet 22 is two, and two first liquid outlets 22 set up along the circumference and the axis direction interval of main shaft, and two first liquid outlets 22 are diagonal setting promptly to make the cooling oil after accomplishing the heat transfer flow out fast in the cooling chamber, avoid the cooling oil high temperature in the cooling chamber and lead to the main shaft to be heated and warp.

The number of the first liquid outlet ports 22 is not limited to this. Optionally, the first liquid outlet 22 is one, or three, or four, or five, or more, so as to achieve rapid liquid outlet.

As shown in fig. 1 to 4, the number of the first liquid outlets 22 is two, and the cooling system further includes a third pipeline 70 and a fourth pipeline 80. Wherein the first end of the third pipeline 70 is communicated with a first liquid outlet 22. A first end of the fourth pipeline 80 is communicated with the other first liquid outlet 22, a second end of the third pipeline 70 is communicated with the fourth pipeline 80, and a second end of the fourth pipeline 80 is communicated with the second liquid inlet 313. Thus, the above arrangement of the third pipeline 70 enables a part of the cooling oil in one first liquid outlet 22 to enter the fourth pipeline 80 through the third pipeline 70, and to be mixed with another part of the cooling oil in the fourth pipeline 80, and after the mixing is completed, the cooling oil enters the cache cavity through the second liquid inlet 313, so that the cooling oil in the cooling cavity can be ensured to smoothly enter the cache cavity, and the flowing reliability of the cooling oil in the cooling system is improved.

Optionally, the heat dissipation device 30 is disposed on the cooling body 20 and above the cooling body 20, and the at least one first liquid inlet 21 and the at least one first liquid outlet 22 are respectively located at two sides of the main shaft. In this embodiment, one first liquid inlet port 21 and the other first liquid outlet port 22 are located on both sides of the main shaft. Thus, the arrangement of the heat dissipation device 30 makes the structural layout of the cooling system more reasonable and compact, and improves the aesthetic degree. Meanwhile, the arrangement avoids the increase of pressure in the cooling cavity due to the concentrated liquid discharge in the cooling cavity, and improves the use safety of the cooling system.

As shown in fig. 1, 3 and 4, the cooling system further includes a first pipeline 40, a second pipeline 50 and a pump structure 60. Wherein a first end of the first line 40 communicates with the storage chamber. A first end of the second conduit 50 communicates with the first inlet port 21. The second end of the first pipeline 40 is communicated with the liquid inlet part of the pump body structure 60, the second end of the second pipeline 50 is communicated with the liquid outlet part of the pump body structure 60, and the pump body structure 60 is used for pumping the cooling medium in the first pipeline 40 into the second pipeline 50. Thus, the arrangement ensures that the cooling medium in the storage cavity can be conveyed into the first liquid inlet 21, and the use reliability of the cooling system is improved.

Specifically, a first end of the first pipeline 40 is connected to the oil outlet 11, and a second end of the first pipeline 40 is connected to the liquid inlet of the pump body structure 60. A first end of the second pipeline 50 is connected with the first liquid inlet 21, and a second end of the second pipeline 50 is connected with the liquid outlet portion of the pump body structure 60. After the pump body structure 60 is started, the pump body structure 60 pumps the cooling oil in the storage cavity to the cooling cavity sequentially through the oil outlet 11, the first pipeline 40, the second pipeline 50 and the first liquid inlet 21, so that the cooling oil in the storage cavity can enter the cooling cavity and exchange heat with the main shaft, and the operation reliability of the cooling system is improved.

As shown in fig. 1 and 4, the cooling system further includes a pressure regulating valve body 90. Wherein a pressure regulating valve body 90 is provided on the second line 50 for regulating the pressure of the cooling medium located in the second line 50. Therefore, in the process of cooling the main shaft by the cooling system, the pressure regulating valve body 90 can regulate the pressure of the cooling oil entering the cooling cavity, the influence on the normal operation of the main shaft due to the overhigh pressure of the cooling oil is avoided, and the use reliability of the cooling system is also improved.

Optionally, the cooling body 20 is sleeved outside the main spindle box 100, and the cooling system further includes a sealing structure. The seal structure is provided between the headstock 100 and the cooling body 20. Wherein the sealing structure is made of rubber or silica gel. Thus, the arrangement can prevent the cooling oil in the cooling cavity from leaking out of the cooling system through the joint of the spindle box 100 and the cooling body 20 to cause waste of the cooling oil, and the sealing performance of the cooling system is improved.

Optionally, the sealing structure is multiple, and the multiple sealing structures are arranged at intervals along the extension direction of the main shaft. Thus, the arrangement further improves the sealing reliability of the sealing structure.

As shown in fig. 1 to 4, the present application also provides a machine tool including a headstock 100 and a cooling system provided on the headstock 100. Wherein, the cooling system is the cooling system.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

in the main shaft rotation process, a cooling medium located in the storage structure enters the cooling cavity through the first liquid inlet and exchanges heat with the main shaft, so that the main shaft is cooled, the problem that the main shaft of the machine tool deforms due to heating in the operation process in the prior art is solved, and the service life of the main shaft is prolonged. Therefore, the cooling medium after heat exchange with the main shaft sequentially enters the cache cavity through the first liquid outlet and the second liquid inlet, and the fan cools and cools the cooling medium in the cache cavity. The cooling medium after finishing cooling flows back to the storage cavity through the second liquid outlet to carry out circulative cooling to the main shaft, promoted cooling system's cooling efficiency.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling system for cooling a spindle of a machine tool, the cooling system comprising:

a storage structure (10) having a storage chamber for storing a cooling medium;

the cooling body (20) is provided with a cooling cavity, a first liquid inlet (21) and a first liquid outlet (22), the cooling cavity is communicated with the storage cavity through the first liquid inlet (21), the first liquid outlet (22) is communicated with the cooling cavity, and the main shaft is positioned in the cooling cavity;

the heat dissipation device (30) comprises a heat dissipation structure (31) and a fan (32), wherein an air outlet of the fan (32) faces the heat dissipation structure (31) so as to cool the heat dissipation structure (31);

the heat dissipation structure (31) is provided with a cache cavity, a second liquid inlet (313) and a second liquid outlet (314), the first liquid outlet (22) is communicated with the cache cavity through the second liquid inlet (313), and the cache cavity is communicated with the storage cavity through the second liquid outlet (314).

2. The cooling system according to claim 1, wherein the heat dissipating structure (31) is disposed opposite to the air outlet, and the heat dissipating structure (31) comprises:

a heat dissipating body (311), the heat dissipating body (311) having the buffer cavity, the second inlet (313) and the second outlet (314);

and the radiating fin (312) is arranged on the radiating body (311) and is positioned on one side of the radiating body (311) far away from the fan (32).

3. The cooling system of claim 1, wherein the cooling cavity extends in an axial direction of the main shaft.

4. The cooling system according to claim 1,

the number of the first liquid inlet ports (21) is one, or the number of the first liquid inlet ports (21) is multiple, and the multiple first liquid inlet ports (21) are arranged at intervals along the circumferential direction and/or the axial direction of the main shaft; and/or

The number of the first liquid outlet (22) is one; or the first liquid outlets (22) are multiple, and the multiple first liquid outlets (22) are arranged at intervals along the circumferential direction and/or the axial direction of the main shaft.

5. Cooling system according to claim 4, wherein the first liquid outlet (22) is two, the cooling system further comprising:

a third conduit (70), a first end of said third conduit (70) being in communication with one of said first outlet ports (22);

a fourth pipeline (80), wherein a first end of the fourth pipeline (80) is communicated with the other first liquid outlet (22), a second end of the third pipeline (70) is communicated with the fourth pipeline (80), and a second end of the fourth pipeline (80) is communicated with the second liquid inlet (313).

6. Cooling system according to claim 5, characterized in that the heat sink (30) is arranged on the cooling body (20) above the cooling body (20), at least one first liquid inlet (21) and at least one first liquid outlet (22) being located on either side of the main shaft.

7. The cooling system of claim 1, further comprising:

a first line (40), a first end of the first line (40) communicating with the storage chamber;

a second pipeline (50), wherein a first end of the second pipeline (50) is communicated with the first liquid inlet (21);

the pump body structure (60), the second end of first pipeline (40) with the feed liquor portion intercommunication of pump body structure (60), the second end of second pipeline (50) with the play liquid portion intercommunication of pump body structure (60), pump body structure (60) are used for will being located cooling medium pump in first pipeline (40) extremely in the second pipeline (50).

8. The cooling system of claim 7, further comprising:

and the pressure regulating valve body (90) is arranged on the second pipeline (50) and used for regulating the pressure of the cooling medium in the second pipeline (50).

9. The cooling system according to claim 1, wherein the cooling body (20) is sleeved outside the main spindle box (100), and the cooling system further comprises:

a seal structure provided between the headstock (100) and the cooling body (20); wherein, the sealing structure is made of rubber or silica gel.

10. A machine tool, characterized by comprising a headstock (100) and a cooling system provided on the headstock (100); wherein the cooling system is the cooling system of any one of claims 1 to 9.