Magnetic refrigeration machine tool spindle

Abstract

The utility model discloses a magnetic refrigeration machine tool spindle, which relates to the technical field of cooling of machine tool spindles, and is provided with a cooling liquid sleeve, a servo motor, an active magnetic regenerator and a high-temperature radiator provided with a fan, and the servo motor is in transmission connection with a magnetic rotating end of the active magnetic regenerator through a belt. The cooling liquid sleeve is connected between a cold end connector water return port and a cold end connector water outlet of the active magnetic regenerator through a pipeline, and the high-temperature radiator is connected between a hot end connector water return port and a hot end connector water outlet of the active magnetic regenerator through a pipeline. And a circulating pump is arranged in the pipeline. By using the magnetic refrigeration technology, the cooling process of the machine tool spindle has the cooling effects of low noise, environment friendliness and energy conservation, and the working stability and the machining precision of the machine tool spindle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling of machine tool spindles, in particular to a magnetic refrigeration machine tool spindle, which realizes refrigeration of the machine tool spindle by utilizing magnetocaloric effect. Background Art

[0002] Traditional machine tool spindle cooling mostly uses water cooling or air cooling systems. Although these systems can effectively control the temperature of the spindle, they have problems such as high energy consumption, low efficiency, and environmental pollution of the fluorine system. Magnetic refrigeration technology, as a new type of environmentally friendly refrigeration technology, is a new type of refrigeration technology based on the magnetocaloric effect. The magnetocaloric effect refers to the physical phenomenon that magnetocaloric materials release or absorb heat when the magnetic field is strengthened or weakened. When the magnetic field magnetizes the magnetocaloric material, the magnetocaloric material becomes hot, and when the magnetic field is removed, the magnetocaloric material becomes cold. Magnetic refrigeration uses the phenomenon of the magnetocaloric effect to achieve the purpose of refrigeration. Magnetic refrigeration is a green and environmentally friendly refrigeration technology with a theoretical Carnot cycle efficiency of up to 60%. It has the advantages of being environmentally friendly and energy-saving. Therefore, the development of a machine tool spindle cooling device based on magnetic refrigeration technology is an important innovation to improve the working efficiency and environmental protection level of machine tool spindles. Utility Model Content

[0003] The utility model provides a magnetic refrigeration machine tool spindle, which can effectively reduce the working temperature of the machine tool spindle through a magnetic refrigeration device.

[0004] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0005] The utility model provides a magnetic refrigeration machine tool spindle, which is provided with a coolant jacket, a servo motor, an active magnetic regenerator and a high-temperature radiator equipped with a fan. The servo motor is connected to the magnetic rotating end of the active magnetic regenerator through a belt drive, the coolant jacket is connected between the cold end interface return water port and the cold end interface water outlet of the active magnetic regenerator through a pipeline, and the high-temperature radiator is connected between the hot end interface return water port and the hot end interface water outlet of the active magnetic regenerator through a pipeline; a circulating pump is provided in the pipeline.

[0006] Specifically, the cold end interface water return port of the active magnetic regenerator is connected to the coolant outlet of the coolant jacket through a pipeline, and the cold end interface water outlet of the active magnetic regenerator is connected to the coolant inlet of the coolant jacket through a pipeline; the hot end interface water return port of the active magnetic regenerator is connected to the liquid outlet of the high-temperature radiator through a pipeline, and the hot end interface water outlet of the active magnetic regenerator is connected to the liquid inlet of the high-temperature radiator through a pipeline.

[0007] As a further description of the above technical solution, there are two circulating pumps, namely a first circulating pump installed in the pipeline between the return water port of the cold end interface of the active magnetic regenerator and the coolant outlet of the coolant jacket, and a second circulating pump installed in the pipeline between the return water port of the hot end interface of the active magnetic regenerator and the liquid outlet of the high-temperature radiator.

[0008] As a further description of the above technical solution, a first one-way valve is provided in the pipeline between the water outlet of the cold end interface of the active magnetic regenerator and the coolant inlet of the coolant jacket.

[0009] As a further description of the above technical solution, a second one-way valve is provided in the pipeline between the water outlet of the hot end interface of the active magnetic regenerator and the liquid inlet of the high-temperature radiator.

[0010] As a further description of the above technical solution, the servo motor and the active magnetic regenerator are integrated in a mounting box, and the high-temperature radiator is mounted on the outer wall of the mounting box.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1) By using magnetic refrigeration technology, the cooling process of the machine tool spindle has a low-noise, environmentally friendly, and energy-saving cooling effect, which improves the working stability and processing accuracy of the machine tool spindle.

[0013] 2) The reasonable structural design realizes the modularization of the refrigeration device, which is convenient for loading and unloading and maintenance. For other machine tool spindles that already have cooling water jackets, it is only necessary to replace the box-type refrigeration module and connect it to the machine tool cooling water jacket through the cold end interface to complete the replacement work.

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following embodiments of the present invention are given in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the cooling principle of the magnetic refrigeration machine tool spindle according to the embodiment;

[0017] Figure 2 1 is a schematic diagram of the integrated appearance of the high-temperature radiator, servo motor and active magnetic regenerator described in the embodiment;

[0018] In the figure: 1. Machine tool spindle; 2. Motor rotor; 3. Motor stator; 4. Coolant jacket; 5. Coolant inlet; 6. Coolant outlet; 7. First one-way valve; 8. First circulation pump; 9. Servo motor; 10. Active magnetic regenerator; 11. Second circulation pump; 12. Second one-way valve; 13. High-temperature radiator; 14. Fan; 15. Installation box; 16. Cold end interface return port; 17. Cold end interface outlet. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0020] Please refer to Figure 1 This embodiment provides a magnetic refrigeration machine tool spindle 1, which is provided with a coolant jacket 4, a servo motor 9, an active magnetic regenerator 10 and a high-temperature radiator 13 equipped with a fan 14. The coolant jacket 4 is used to absorb the heat emitted by the machine tool spindle 1, and the high-temperature radiator 13 is used to dissipate heat to the surrounding environment outside the machine tool.

[0021] The high-temperature radiator 13 is a fin-type radiator, and the fan 14 can enhance its heat dissipation effect and effectively dissipate heat to the surrounding environment.

[0022] One end of the active magnetic regenerator 10 is a cold end interface, which is connected to the coolant jacket 4 through a pipeline a, and the other end is a hot end interface, which is connected to the high-temperature radiator 13 through a pipeline b.

[0023] Specifically, the cold end interface return water port 16 of the active magnetic regenerator 10 is connected to the coolant outlet 6 of the coolant jacket 4 through a pipeline, and the cold end interface water outlet 17 of the active magnetic regenerator 10 is connected to the coolant inlet 5 of the coolant jacket 4 through a pipeline; the hot end interface return water port of the active magnetic regenerator 10 is connected to the liquid outlet of the high-temperature radiator 13 through a pipeline, and the hot end interface water outlet of the active magnetic regenerator 10 is connected to the liquid inlet of the high-temperature radiator 13 through a pipeline.

[0024] In this embodiment, a first circulation pump 8 is provided in the pipeline between the return water port 16 of the cold end interface of the active magnetic regenerator 10 and the coolant outlet 6 of the coolant jacket 4, and a second circulation pump 11 is provided in the pipeline between the return water port of the hot end interface of the active magnetic regenerator 10 and the liquid outlet of the high-temperature radiator 13. The cooling medium circulation can be realized by the first circulation pump 8 and the second circulation pump 11.

[0025] The servo motor 9 is connected to the magnetic rotating end of the active magnetic regenerator 10 through a belt drive. The magnetic rotating end rotates under the drive of the servo motor 9, causing the magnetic refrigerant to be periodically excited and demagnetized, thereby realizing a refrigeration cycle.

[0026] The working principle of magnetic refrigeration is as follows:

[0027] The active magnetic regenerator 10 can absorb the heat generated during the operation of the machine tool spindle 1 through the cold end interface, pipeline a, and coolant jacket 4, thereby reducing the temperature of the machine tool spindle 1 and achieving the purpose of cooling. At the same time, the coolant is pumped into the active magnetic regenerator 10 through the circulation pump to perform a refrigeration cycle.

[0028] A cylindrical active magnetic regenerator 10 is filled with a granular magnetic refrigerant. A periodic magnetic field is applied to the active magnetic regenerator 10, while a circulating pump drives the fluid to flow back and forth periodically, exchanging heat with the magnetic refrigerant. Magnetic refrigeration is achieved through four steps:

[0029] 1) Magnetization process: Under the influence of an external magnetic field, the magnetic moments of the magnetic refrigerant are rearranged and the potential energy of the system decreases, but the temperature of the material rises due to the enhanced thermal motion.

[0030] 2) Heat absorption process: The magnetized high-temperature magnetic material exchanges heat by contacting with the hot end pipe b, releasing heat and lowering the temperature to the same level as the environment.

[0031] 3) Demagnetization process: When the external magnetic field is removed, the magnetic moment of the magnetic material tends to a disordered state, the potential energy of the system increases, and the material spontaneously absorbs the surrounding heat, causing the temperature to further decrease.

[0032] 4) Heat dissipation process: The demagnetized low-temperature magnetic material exchanges heat with the heat input from the cold end pipe a again, absorbs heat, and completes a refrigeration cycle.

[0033] The high-temperature radiator 13 is connected to the hot end interface pipe b, and dissipates the heat absorbed by the active magnetic regenerator 10 to the surrounding environment, and the top fan 14 enhances the heat dissipation effect.

[0034] In this embodiment, a first one-way valve 7 is provided in the pipeline between the cold end interface water outlet 17 of the active magnetic regenerator 10 and the coolant inlet 5 of the coolant jacket 4, and a second one-way valve 12 is provided in the pipeline between the hot end interface water outlet of the active magnetic regenerator 10 and the liquid inlet of the high-temperature radiator 13. The first one-way valve 7 and the second one-way valve 12 ensure that the cooling water flows in a single direction.

[0035] In this embodiment, if Figure 2As shown, the servo motor 9 and the active magnetic regenerator 10 are integrated into a mounting box 15, and the high-temperature radiator 13 is installed on the outer wall of the mounting box 15, realizing convenient modular integration. The design of the mounting box 15 makes it easy to move, eliminating the tedious process of the operator installing and fixing the magnetic refrigeration components one by one, greatly simplifying the assembly work of the machine tool magnetic refrigeration system. This system can also directly replace the existing fluorine refrigeration system without distinction, thereby increasing the scope of application. The cold end interface return water port 16 and the cold end interface outlet 17 are both extended to the outside of the mounting box 15, and the operator can easily connect the cold end interface to the coolant jacket 4 of the machine tool spindle 1, thereby improving assembly efficiency.

[0036] Among them, the bottom of the installation box 15 is equipped with a shock-absorbing pad, which further improves the stability and service life of the equipment.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A magnetic refrigeration machine tool spindle, which is provided with a coolant jacket (4), characterized in that: The invention also includes a servo motor (9), an active magnetic regenerator (10), and a high-temperature radiator (13) equipped with a fan (14); the servo motor (9) is connected to the magnetic rotating end of the active magnetic regenerator (10) through a belt drive; a cold end interface water return port (16) and a cold end interface water outlet (17) of the active magnetic regenerator (10) are connected to the coolant jacket (4) through a pipeline; a hot end interface water return port and a hot end interface water outlet of the active magnetic regenerator (10) are connected to the high-temperature radiator (13) through a pipeline; and a circulating pump is provided in the pipeline.

2. The magnetic refrigeration machine tool spindle according to claim 1, characterized in that: The cold end interface water return port (16) of the active magnetic regenerator (10) is connected to the coolant outlet (6) of the coolant jacket (4) through a pipeline, and the cold end interface water outlet (17) of the active magnetic regenerator (10) is connected to the coolant inlet (5) of the coolant jacket (4) through a pipeline; the hot end interface water return port of the active magnetic regenerator (10) is connected to the liquid outlet of the high-temperature radiator (13) through a pipeline, and the hot end interface water outlet of the active magnetic regenerator (10) is connected to the liquid inlet of the high-temperature radiator (13) through a pipeline.

3. The magnetic refrigeration machine tool spindle according to claim 2, characterized in that: There are two circulating pumps, namely a first circulating pump (8) installed in a pipeline between the return water port (16) of the cold end interface of the active magnetic regenerator (10) and the coolant outlet (6) of the coolant jacket (4), and a second circulating pump (11) installed in a pipeline between the return water port of the hot end interface of the active magnetic regenerator (10) and the liquid outlet of the high-temperature radiator (13).

4. The magnetic refrigeration machine tool spindle according to claim 2, characterized in that: A first one-way valve (7) is provided in the pipeline between the cold end interface water outlet (17) of the active magnetic regenerator (10) and the coolant inlet (5) of the coolant jacket (4).

5. The magnetic refrigeration machine tool spindle according to claim 2, characterized in that: A second one-way valve (12) is provided in the pipeline between the water outlet of the hot end interface of the active magnetic regenerator (10) and the liquid inlet of the high-temperature radiator (13).

6. The magnetic refrigeration machine tool spindle according to claim 2, characterized in that: The servo motor (9) and the active magnetic regenerator (10) are integrated into a mounting box (15), and the high-temperature radiator (13) is mounted on the outer wall of the mounting box (15).

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