A spindle cooling device for CNC lathe machining

Abstract

The utility model relates to the technical field of numerical control lathes, and discloses a spindle cooling device for machining numerical control lathes, wherein a heat sink seat is installed on the side of a coolant tank, and heat dissipation fins are arranged on the side of the heat sink seat. The machine tool spindle rotates inside a sealed shell seat under the drive of a driving top seat, and a heat conductive plug on the upper part of the heat sink seat is used to increase the contact area between the heat dissipation structure and the air, which can effectively improve the heat dissipation effect of the device, and a double-sided liquid cooling heat dissipation structure is adopted, and a cooling through hole is arranged inside the machine tool spindle, and the coolant can contact the inner and outer sides of the machine tool spindle at the same time, which can increase the heat dissipation contact area between the machine tool spindle and the coolant, and can effectively improve the conduction heat dissipation efficiency of the machine tool spindle, and an oblique infusion hole is arranged at the lower part of the machine tool spindle, and the self-rotation of the machine tool spindle is used to cooperate with the oblique infusion hole during operation to realize directional delivery of the coolant, and the circulation of the coolant inside the machine tool spindle can be realized without a driving structure.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled lathes, in particular to a spindle cooling device for machining numerically controlled lathes. Background Art

[0002] Lathes are common parts processing equipment, among which CNC lathes are the most widely used. CNC machine tools automatically process the parts to be processed according to pre-programmed processing programs. We put the parts processing process route, process parameters, tool movement trajectory, displacement, cutting parameters and auxiliary functions, which are often used in shaft or disc parts processing. The spindle is an important component to ensure the accuracy of the CNC lathe processing size. When the CNC lathe is processing the workpiece, the spindle will generate a lot of heat after high-speed rotation. In order to extend the service life of the spindle, a cooling device is needed to cool the spindle.

[0003] In order to quickly cool the spindle, traditional spindle cooling devices mostly use liquid conduction cooling methods to cool the spindle through coolant circulation. When performing oil heat dissipation, traditional cooling devices mostly rely on natural cooling through oil reflux and static cooling, and the cooling efficiency is low. Traditional cooling devices mostly use external cooling methods to cool the outside of the spindle through coolant. The contact area between the coolant and the spindle is limited, the cooling efficiency is greatly limited, and the cooling effect is poor. Utility Model Content

[0004] The utility model aims to provide a spindle cooling device for CNC lathe processing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spindle cooling device for CNC lathe machining, comprising a cooling mechanism for cooling the spindle of the machine tool, the cooling mechanism comprising a coolant tank, a heat sink seat and a liquid pump, the heat sink seat is installed on the side of the coolant tank, and the side of the heat sink seat is provided with heat dissipation fins;

[0006] A sealing shell seat and a driving top seat are arranged on the outside of the machine tool spindle. The machine tool spindle rotates inside the sealing shell seat under the drive of the driving top seat. A cooling through hole is arranged inside the machine tool spindle. An oblique infusion hole and a cooling circulation hole are respectively arranged on the upper and lower sides of the machine tool spindle. The oblique infusion hole and the cooling circulation hole are both connected with the cooling through hole.

[0007] Preferably, the sealing housing seat is fixedly mounted on the lower part of the driving top seat, a driving motor is arranged inside the driving top seat, and the machine tool spindle is fixedly mounted on the rotating shaft end of the driving motor.

[0008] Preferably, the above-mentioned oblique infusion hole is arranged obliquely, and there are multiple oblique infusion holes, and several of the oblique infusion holes are evenly penetrated and opened on the lower circumference of the machine tool spindle on the circumferential side, and there are multiple cooling circulation holes, and several of the cooling circulation holes are evenly penetrated and opened on the upper circumference of the machine tool spindle.

[0009] Preferably, the coolant tank is fixedly installed on the side of the driving top seat by bolts, the liquid pump is fixedly connected to the lower part of the coolant tank, a delivery interface is provided at the bottom of the liquid pump, a liquid inlet interface is provided at the lower part of the side of the sealing shell seat, and the delivery interface is connected to the liquid inlet interface through a hose.

[0010] Preferably, a recovery interface is provided at an upper side of the coolant tank, and a reflux interface is provided at an upper side of the sealing shell seat, and the recovery interface is connected to the reflux interface through a hose.

[0011] Preferably, a thermally conductive plug is evenly fixed to the rear of the heat sink seat, a plug mounting groove is provided on the front side of the coolant tank, the thermally conductive plug is inserted and installed on the inner side of the plug mounting groove, and sealing gaskets are provided on the joint side of the thermally conductive plug and the side of the heat sink seat.

[0012] Preferably, the upper portion of the heat sink seat is evenly provided with fastening screw holes, and fastening bolts are provided inside the fastening screw holes. The heat sink seat is fixedly installed on the front side of the coolant tank by the fastening bolts. A plurality of heat sink fins are provided, and a plurality of the heat sink fins are evenly fixed on the front side of the heat sink seat at equal distances.

[0013] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0014] The cooling device adopts a fin-type heat dissipation structure, a heat dissipation plate seat is arranged on the side of the coolant tank, and the heat conductive plug on the upper part of the heat dissipation plate seat is used to increase the contact area between the heat dissipation structure and the air. Compared with the traditional natural heat dissipation structure, it has a better heat dissipation and cooling effect on the coolant, which can effectively improve the heat dissipation effect of the device, and adopts a double-sided liquid-cooled heat dissipation structure, and a cooling through hole is arranged inside the machine tool spindle, so that the coolant can be filled into the inside of the machine tool spindle. The coolant can contact the inside and outside of the machine tool spindle at the same time, which can increase the heat dissipation contact area between the machine tool spindle and the coolant, and can effectively improve the conductive heat dissipation efficiency of the machine tool spindle, and an oblique infusion hole is arranged at the lower part of the machine tool spindle. The oblique infusion hole is inclined. When working, the self rotation of the machine tool spindle is used to cooperate with the oblique infusion hole to realize the directional delivery of the coolant. The circulation of the coolant inside the machine tool spindle can be realized without a driving structure, which can further improve the heat dissipation efficiency of the machine tool spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall installation upper structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall installation lower structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the front structure of the heat sink seat of the utility model;

[0019] Figure 4 This is a schematic diagram of the rear structure of the heat sink seat of the utility model;

[0020] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the sealing housing seat of the utility model;

[0021] Figure 6 It is a schematic diagram of the lower cross-sectional structure of the machine tool spindle of the utility model.

[0022] Explanation of the accompanying reference numerals: 1. Machine tool spindle; 2. Coolant tank; 3. Heat sink seat; 4. Liquid pump; 5. Sealing shell seat; 6. Driving top seat; 7. Delivery interface; 8. Recovery interface; 9. Liquid inlet interface; 10. Reflux interface; 11. Heat sink fins; 12. Heat conductive plug; 13. Sealing gasket; 14. Fastening screw hole; 15. Cooling through hole; 16. Oblique infusion hole; 17. Cooling circulation hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0025] Example

[0026] See also Figure 1-6 The utility model provides a technical solution: a spindle cooling device for CNC lathe processing, the machine tool spindle 1 is a milling spindle, in order to drive the machine tool spindle 1, a sealing shell seat 5 and a driving top seat 6 are arranged outside the machine tool spindle 1, as shown in the attached Figure 1 As shown, the sealing housing 5 is fixedly mounted on the lower part of the driving top seat 6, a driving motor is arranged inside the driving top seat 6, and the machine tool spindle 1 is fixedly mounted on the rotating shaft end of the driving motor. The machine tool spindle 1 rotates inside the sealing housing 5 under the drive of the driving top seat 6 to realize milling processing of the workpiece.

[0027] In order to cool the machine tool spindle 1, a cooling mechanism is provided on the side of the driving top seat 6, and the cooling mechanism includes a coolant tank 2, a heat sink seat 3 and a liquid pump 4. Figure 1 As shown, the coolant tank 2 is fixedly installed on the side of the driving top seat 6 by bolts for recovering and storing the coolant. In order to pressurize and transport the coolant, the liquid pump 4 is fixedly connected to the lower part of the coolant tank 2. A delivery interface 7 is provided at the bottom of the liquid pump 4. A liquid inlet interface 9 is provided at the lower part of the side of the sealing shell seat 5. The delivery interface 7 is connected to the liquid inlet interface 9 through a hose, so that the coolant can be transported into the interior of the sealing shell seat 5.

[0028] In order to improve the heat dissipation effect of the machine tool spindle 1, a cooling through hole 15 is arranged inside the machine tool spindle 1. A double-sided liquid cooling heat dissipation structure is adopted. The cooling through hole 15 is arranged inside the machine tool spindle 1 so that the coolant can be filled into the inside of the machine tool spindle 1. The coolant can contact the inside and outside of the machine tool spindle 1 at the same time, which can increase the heat dissipation contact area between the machine tool spindle 1 and the coolant, and can effectively improve the conduction heat dissipation efficiency of the machine tool spindle 1. In order to realize the circulation and transportation of the coolant, an oblique infusion hole 16 and a cooling circulation hole 17 are respectively arranged on the upper and lower sides of the machine tool spindle 1. The oblique infusion hole 16 is an inclined It is arranged obliquely, and there are multiple oblique infusion holes 16. Several oblique infusion holes 16 are evenly penetrated on the lower circumference of the machine tool spindle 1. During operation, the self-rotation of the machine tool spindle 1 is coordinated with the oblique infusion holes 16 to realize directional delivery of the coolant, and the circulation of the coolant inside the machine tool spindle 1 can be realized without a driving structure. In order to realize the circulation of the coolant, there are multiple cooling circulation holes 17. Several cooling circulation holes 17 are evenly penetrated on the upper circumference of the machine tool spindle 1, and the oblique infusion holes 16 and the cooling circulation holes 17 are both connected to the cooling through hole 15.

[0029] In order to realize the circulation of the coolant, a recovery interface 8 is provided on the upper side of the coolant tank 2, and a reflux interface 10 is provided on the upper side of the sealing shell seat 5. The recovery interface 8 is connected to the reflux interface 10 through a hose, so that the coolant can be recovered and stored. In order to improve the heat dissipation efficiency of the coolant tank 2, the heat sink seat 3 is installed on the side of the coolant tank 2. The heat sink seat 3 can be made of aluminum. In order to facilitate heat conduction with the coolant, the rear part of the heat sink seat 3 is evenly fixed with a heat conductive plug 12, and the front part of the coolant tank 2 is connected to the reflux interface 10. The side of the heat sink seat 3 is provided with a plug-in installation groove, and the heat-conducting plug-in 12 is inserted and installed in the inner side of the plug-in installation groove. In order to improve the installation and sealing of the heat sink seat 3, the joint side of the heat-conducting plug-in 12 and the side of the heat sink seat 3 are provided with a sealing gasket 13. In order to facilitate the fastening and installation of the heat sink seat 3, fastening screw holes 14 are evenly arranged on the upper part of the heat sink seat 3. Fastening bolts are arranged inside the fastening screw holes 14. The heat sink seat 3 is fixedly installed on the front side of the coolant tank 2 by fastening bolts. In order to increase the heat dissipation rate, as shown in the attached Figure 3 As shown, a heat dissipation fin 11 is arranged on the side of the heat dissipation plate seat 3, and a plurality of heat dissipation fins 11 are arranged, and several heat dissipation fins 11 are evenly fixed on the front side of the heat dissipation plate seat 3 in an equidistant manner. The heat dissipation fins 11 can increase the contact area between the heat dissipation structure and the air. Compared with the traditional natural heat dissipation structure, it has a better heat dissipation and cooling effect on the coolant, and can effectively improve the heat dissipation effect of the device.

[0030] The working principle or structural principle is that when working, the machine tool spindle 1 rotates under the drive of the driving top seat 6, driving the cutter head structure to complete the milling process of the workpiece. When working, the coolant in the coolant tank 2 is transported into the inside of the sealed shell seat 5 through the liquid pump 4. The coolant in the sealed shell seat 5 is contacted and conducted with the peripheral side of the machine tool spindle 1 to achieve cooling and heat dissipation of the machine tool spindle 1. At the same time, when the machine tool spindle 1 rotates, the coolant in the sealed shell seat 5 is sucked into the inside of the cooling through hole 15 under the action of the oblique infusion hole 16, and the cooling through hole 15 is The original coolant in the coolant is discharged from the cooling circulation hole 17 to realize the circulation of the coolant in the machine tool spindle 1. Then, the coolant in the sealing shell seat 5 is refluxed and discharged through the reflux interface 10 due to the push of the entering liquid. Then, it flows back into the coolant tank 2 through the recovery interface 8 on the side of the coolant tank 2. The coolant is mixed and cooled in the coolant tank 2. At the same time, the excess heat is conducted to the heat dissipation fins 11 through the heat conduction plug 12, and dissipated to the outside through the heat dissipation fins 11, completing the heat dissipation and cooling of the coolant. In this way, the cooling operation of the machine tool spindle 1 is completed in this cycle.

[0031] In summary, the cooling device adopts a fin-type heat dissipation structure, and a heat sink seat 3 is arranged on the side of the coolant tank 2. The heat conductive plug 12 on the upper part of the heat sink seat 3 is used to increase the contact area between the heat dissipation structure and the air. Compared with the traditional natural heat dissipation structure, it has a better heat dissipation and cooling effect on the coolant, which can effectively improve the heat dissipation effect of the device, and adopts a double-sided liquid-cooled heat dissipation structure. A cooling through hole 15 is arranged inside the machine tool spindle 1, so that the coolant can be filled into the inside of the machine tool spindle 1. The coolant can contact the inside and outside of the machine tool spindle 1 at the same time, which can increase the heat dissipation contact area between the machine tool spindle 1 and the coolant, and can effectively improve the conduction heat dissipation efficiency of the machine tool spindle 1. In addition, an oblique infusion hole 16 is arranged at the lower part of the machine tool spindle 1. The oblique infusion hole 16 is inclined. When working, the self-rotation of the machine tool spindle 1 is used to cooperate with the oblique infusion hole 16 to realize the directional delivery of the coolant. The circulation of the coolant inside the machine tool spindle 1 can be realized without a driving structure, which can further improve the heat dissipation efficiency of the machine tool spindle 1.

[0032] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0033] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle cooling device for CNC lathe machining, comprising a cooling mechanism for cooling a machine tool spindle (1), characterized in that: The cooling mechanism comprises a cooling liquid tank (2), a heat sink seat (3) and a liquid pump (4); the heat sink seat (3) is installed on the side of the cooling liquid tank (2); and heat sink fins (11) are provided on the side of the heat sink seat (3); A sealing housing (5) and a driving top housing (6) are arranged outside the machine tool spindle (1); the machine tool spindle (1) is driven by the driving top housing (6) to rotate inside the sealing housing (5); a cooling through hole (15) is arranged inside the machine tool spindle (1); oblique infusion holes (16) and cooling circulation holes (17) are arranged on upper and lower sides of the machine tool spindle (1), respectively; the oblique infusion holes (16) and cooling circulation holes (17) are both connected to the cooling through hole (15).

2. The spindle cooling device for CNC lathe processing according to claim 1, characterized in that: The sealing housing seat (5) is fixedly mounted on the lower part of the driving top seat (6), a driving motor is arranged inside the driving top seat (6), and the machine tool spindle (1) is fixedly mounted on the rotating shaft end of the driving motor.

3. The spindle cooling device for CNC lathe processing according to claim 2 is characterized in that: The oblique infusion hole (16) is arranged obliquely, and a plurality of the oblique infusion holes (16) are arranged, and a plurality of the oblique infusion holes (16) are evenly arranged on the circumferential side and penetrate the lower circumference of the machine tool spindle (1). The plurality of cooling circulation holes (17) are arranged, and a plurality of the cooling circulation holes (17) are evenly arranged on the upper circumference of the machine tool spindle (1).

4. The spindle cooling device for CNC lathe processing according to claim 1 is characterized in that: The coolant tank (2) is fixedly mounted on the side of the driving top seat (6) by means of bolts, the liquid pump (4) is fixedly connected to the lower part of the coolant tank (2), a delivery interface (7) is provided at the bottom of the liquid pump (4), a liquid inlet interface (9) is provided at the lower part of the side of the sealing shell seat (5), and the delivery interface (7) is connected to the liquid inlet interface (9) through a hose.

5. The spindle cooling device for CNC lathe processing according to claim 4 is characterized in that: A recovery interface (8) is provided at the upper side of the coolant tank (2), and a reflux interface (10) is provided at the upper side of the sealing housing seat (5), and the recovery interface (8) is connected to the reflux interface (10) via a hose.

6. The spindle cooling device for CNC lathe processing according to claim 5, characterized in that: A heat-conducting plug (12) is evenly fixed to the rear of the heat sink seat (3), a plug installation groove is provided on the front side of the coolant tank (2), the heat-conducting plug (12) is inserted and installed in the inner side of the plug installation groove, and a sealing gasket (13) is provided on the joint side of the heat-conducting plug (12) and the side of the heat sink seat (3).

7. The spindle cooling device for CNC lathe processing according to claim 6, characterized in that: The upper part of the heat sink seat (3) is evenly provided with fastening screw holes (14), and the inside of the fastening screw holes (14) is provided with fastening bolts. The heat sink seat (3) is fixedly installed on the front side of the coolant tank (2) by the fastening bolts. A plurality of heat sink fins (11) are provided, and a plurality of the heat sink fins (11) are evenly fixed on the front side of the heat sink seat (3) in an equidistant manner.

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