A laser intelligent refrigeration grinding wheel

Abstract

The present invention provides a laser intelligent refrigeration grinding wheel, comprising a grinding wheel body and a laser generator. The grinding wheel body comprises a grinding wheel base and an abrasive layer uniformly covering the side wall of the grinding wheel base. A refrigeration cavity is opened on the inner side of the outer edge of the grinding wheel base, one end of the refrigeration cavity penetrates the end face of the grinding wheel base, and the grinding wheel base is provided with a transmission cover plate for pumping laser to enter the refrigeration cavity on the outer side of the refrigeration cavity. A combined reflector is provided on the side away from the transmission cover plate inside the refrigeration cavity, and the laser refrigeration element is provided between the combined reflector and the transmission cover plate. An elastic resin transmission clamp for fastening the laser refrigeration element is provided on the top of the laser refrigeration element. After the pump laser is incident on the refrigeration cavity from the transmission cover plate, it is repeatedly reflected by the transmission cover plate and the combined reflector, and the laser refrigeration element is repeatedly irradiated with the laser, so that the laser refrigeration element generates more fluorescence for refrigeration, thereby improving the overall refrigeration efficiency of the present invention.

Description

Technical Field

[0001] The invention belongs to the technical field of high-speed and high-efficiency grinding equipment, and specifically relates to a laser intelligent refrigeration grinding wheel. Background Art

[0002] High-speed and high-efficiency grinding is a high-efficiency and high-precision processing method that can improve the processing efficiency and quality of difficult-to-process materials. However, this advanced grinding process is inevitably prone to high temperatures in the workpiece, which can easily burn the workpiece. The current cooling process is mainly improved on the cooling medium, such as spraying liquid nitrogen or low-temperature air, or trace lubricating fluid and high-pressure water jets, etc. The cooling process is complicated. Research has found that structural improvements to the grinding wheel body can also achieve the cooling effect and simplify the existing cooling process of high-efficiency grinding.

[0003] With the development of laser cooling technology, it is inevitable that laser cooling technology will be applied to the design improvement of the grinding wheel body. Such improved grinding wheel cooling technology will have many advantages such as no noise, clean, small size, compact structure, easy maintenance, etc. With the increasing efficiency of laser cooling, its development potential is huge. Summary of the invention

[0004] The purpose of the present invention is to provide a laser intelligent refrigeration grinding wheel. The present invention introduces laser refrigeration technology into the structural design of the grinding wheel body, enhances the self-cooling ability of the grinding wheel, and has many advantages such as no noise, cleanliness, small size of refrigeration elements, simple structure and easy maintenance.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a laser intelligent refrigeration grinding wheel, comprising a grinding wheel body and a laser generator for emitting a pump laser, the grinding wheel body comprising a grinding wheel base and an abrasive layer uniformly covering the side wall of the grinding wheel base, a refrigeration cavity for placing a laser refrigeration element is opened on the inner side of the outer edge of the grinding wheel base, one end of the refrigeration cavity passes through the end face of the grinding wheel base, and the grinding wheel base is provided with a transmission cover plate on the outside of the refrigeration cavity for the pump laser to enter the refrigeration cavity, a combined reflector is provided on the side away from the transmission cover plate inside the refrigeration cavity, the laser refrigeration element is provided between the combined reflector and the transmission cover plate, an elastic resin transmission clip for fastening the laser refrigeration element is provided on the top of the laser refrigeration element, the emitting end of the laser generator is facing the laser refrigeration element, and when the laser refrigeration element is excited by the pump laser, it generates fluorescence with a shorter wavelength for taking away heat, thereby reducing the temperature of the laser refrigeration element and the grinding wheel body to achieve refrigeration.

[0006] Furthermore, one side of the top of the combined reflector extends toward the elastic resin transmission clamp and forms an inclined surface for reflecting the infrared radiation generated on the inner side of the bottom of the refrigeration chamber. The inclined surface transmits the infrared radiation generated on the inner side of the bottom of the refrigeration chamber through the elastic resin transmission clamp to the infrared temperature sensor arranged on the outside of the grinding wheel base.

[0007] Furthermore, the infrared temperature sensor and the laser generator are both connected to a computer control system.

[0008] Furthermore, an infrared reflector is obliquely arranged between the infrared temperature sensor and the grinding wheel base, and the infrared reflector reflects infrared radiation emitted from the elastic resin transmission clamp to the infrared temperature sensor.

[0009] Furthermore, the angles between the infrared reflector and the inclined plane and the horizontal direction are both 45°.

[0010] Furthermore, the elastic resin transmission clip is in a horizontally placed U-shaped structure as a whole, and two ends of the U-shaped structure are respectively in contact with the combined reflector and the transmission cover plate.

[0011] Furthermore, the laser cooling element adopts thulium ion-doped lithium yttrium fluoride crystal or Er3+-doped ZBLAN fluoride glass.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention introduces laser refrigeration technology into the structural design of the grinding wheel body, which enhances the self-cooling ability of the grinding wheel and has many advantages such as no noise, cleanliness, small size of refrigeration elements, simple structure and easy maintenance;

[0014] 2. The present invention provides a transmission cover plate and a combined reflector on both sides of the laser refrigeration element. After the pump laser is incident on the refrigeration cavity from the transmission cover plate, it is repeatedly reflected by the transmission cover plate and the combined reflector and irradiates the laser refrigeration element, so that the laser refrigeration element generates more fluorescence for refrigeration, thereby improving the overall refrigeration efficiency of the present invention.

[0015] 3. The present invention outputs the infrared radiation generated by the inner side of the bottom of the refrigeration chamber, i.e., the inner wall of the grinding layer of the grinding wheel body, to the outside of the grinding wheel body through the inclined surface on the combined reflector, and then inputs it to the infrared temperature sensor through the infrared reflector at a 45-degree angle arranged outside the grinding wheel body, so that the temperature of the working surface of the grinding wheel can be sensed in real time to prevent the workpiece from being burned;

[0016] 4. The present invention connects the infrared temperature sensor and the laser generator to a computer control system, so that the power and wavelength of the laser emitted by the laser generator can be adjusted in real time according to the temperature information detected by the infrared temperature sensor, thereby realizing intelligent refrigeration and preventing energy waste;

[0017] 5. Since the fluorescence generated by the laser cooling element is green and friendly to the surrounding environment, the successful introduction of this grinding wheel structure design and laser cooling technology will produce a clean and noise-free self-cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a laser intelligent refrigeration grinding wheel of the present invention;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 It is a schematic diagram of the transmission of the pump laser emitted by the laser generator and the infrared radiation generated on the inner side of the bottom of the refrigeration cavity in the refrigeration cavity in the present invention;

[0021] Markings in the figure: 1. laser generator, 2. grinding wheel base, 3. refrigeration chamber, 4. transmission cover, 5. combined reflector, 6. laser refrigeration element, 7. elastic resin transmission clamp, 8. inclined plane, 9. infrared temperature sensor, 10. computer control system, 11. infrared reflector. DETAILED DESCRIPTION

[0022] 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 conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] The principle of the present invention is as follows: the present invention introduces the pump laser emitted by the laser generator 1 into the working area near the outer edge of the grinding wheel body, and uses the laser cooling element 6 (glass or crystal material doped with rare earth elements) for cooling. Since the purity of the laser cooling element material is very high and the energy level interval is wide, it will produce fluorescence with a shorter wavelength when excited by the pump laser. This fluorescence takes away the heat on the laser cooling element 6, thereby reducing the temperature of the laser cooling element 6; the grinding heat of the outer edge of the grinding wheel base 2 is transmitted to the laser cooling element 6 in the form of heat conduction, and then excited by the pump laser to generate anti-Stokes fluorescence, which takes away the heat on the laser cooling element 6. Through the continuous irradiation of the pump laser, the heat forms a stable flow from the grinding arc area to the laser cooling element. At the same time, the infrared temperature sensor 9 can detect the temperature of the inner side of the bottom of the refrigeration cavity 3, that is, the inner wall of the grinding layer of the grinding wheel, and input the temperature signal into the computer control system 10. The computer control system 10 further controls the power and wavelength of the pump laser through calculation and judgment, and adjusts the cooling efficiency of the laser cooling element 6, so that the temperature of the grinding arc area can be properly controlled, forming intelligent refrigeration for efficient grinding. Moreover, since the fluorescence generated by the laser cooling element 6 is green and friendly to the surrounding environment, through the successful introduction of this grinding wheel structure design and laser cooling technology, a clean and noiseless self-cooling effect will be produced.

[0024] The present invention is described in detail below with reference to the accompanying drawings:

[0025] A laser intelligent refrigeration grinding wheel, such as Figure 1 As shown, it includes a grinding wheel body and a laser generator 1 for emitting pump laser, the grinding wheel body includes a grinding wheel base 2 and an abrasive layer uniformly covering the side wall of the grinding wheel base, a refrigeration cavity 3 for placing a laser refrigeration element 6 is opened on the inner side of the outer edge of the grinding wheel base 2, one end of the refrigeration cavity 3 passes through the end face of the grinding wheel base 2, and the grinding wheel base 2 is provided with a transmission cover plate 4 on the outer side of the refrigeration cavity 3 for the pump laser to enter the refrigeration cavity 3, a combination reflector 5 is provided on the side away from the transmission cover plate 4 inside the refrigeration cavity 3, the laser refrigeration element 6 is arranged between the combination reflector 5 and the transmission cover plate 4, and an elastic resin transmission clamp 7 for fastening the laser refrigeration element 6 is provided on the top of the laser refrigeration element 6, and the emission end of the laser generator 1 is directly facing the laser refrigeration element 6, as shown in FIG. Figure 3 As shown, the pump laser emitted by the laser generator 1 is incident on the interior of the laser cooling element 6 through the transmission cover plate 4, exciting the cooling element 6 to generate fluorescence. In this embodiment, the laser cooling element 6 is made of thulium ion-doped yttrium lithium fluoride crystal or Er 3+The doped ZBLAN fluoride glass has several crystal planes, and the fluorescence will be scattered into the refrigeration chamber 3 through the several crystal planes for refrigeration. The pump laser that is not absorbed by the laser refrigeration element 6 is incident on the combined reflector 5, and after being reflected by the combined reflector 5, it is incident on the laser refrigeration element 6 again, thereby generating fluorescence and refrigeration again. The pump laser that is still not absorbed will be irradiated to the inner surface of the transmission cover plate 4. A part of the pump laser irradiated on the inner surface of the transmission cover plate 4 will be reflected by the transmission cover plate 4 and will be re-irradiated to the laser refrigeration element together with the newly incident pump laser. In this way, laser irradiation is repeatedly performed on the laser refrigeration element 6, so that the laser refrigeration element generates more fluorescence for refrigeration, thereby improving the overall refrigeration efficiency.

[0026] like Figure 2 As shown, one side of the top of the combined reflector 5 extends toward the elastic resin transmission clamp 7 and forms an inclined surface 8 for reflecting the infrared radiation generated by the inner side of the bottom of the refrigeration chamber 3. The inclined surface 8 transmits the infrared radiation generated by the inner side of the bottom of the refrigeration chamber 3 to the infrared temperature sensor 9 arranged on the outside of the grinding wheel base 2 through the elastic resin transmission clamp 7. An infrared reflector 11 is also arranged obliquely between the infrared temperature sensor 9 and the grinding wheel base 2. The angles between the infrared reflector 11 and the inclined surface 8 and the horizontal direction are both 45°. The infrared reflector 11 reflects the infrared radiation emitted from the elastic resin transmission clamp 7 to the infrared temperature sensor 9. In order to achieve the best use effect, when the grinding wheel body is working, as shown in FIG. Figure 3 As shown, the inner side of the bottom of the refrigeration chamber 3, i.e., the inner wall of the grinding layer of the grinding wheel body, will generate infrared radiation due to the high temperature. The infrared radiation will reflect horizontal infrared light through the inclined surface 8 on the combined reflector 5. The infrared light passes through the elastic resin transmission clamp 7 and the transmission cover plate 4 in turn and is output to the outside of the grinding wheel base 2. It is then input to the infrared temperature sensor 9 through the infrared reflector 11 at a 45-degree angle set outside the grinding wheel body, so that the temperature of the working surface of the grinding wheel can be sensed. It should be noted here that there is a certain temperature difference between the temperature of the working surface of the grinding wheel and the temperature of the inner wall of the bottom of the refrigeration chamber 3, and detection and calibration can be performed before the installation of the present invention to improve the accuracy of temperature perception.

[0027] In order to achieve the best use effect, the infrared temperature sensor 9 and the laser generator 1 are connected to the computer control system 10, so that the power and wavelength of the pump laser are controlled according to the specific temperature of the working surface of the grinding wheel to adjust the efficiency of laser cooling. This will increase the cooling intensity when the grinding temperature is too high, thereby realizing intelligent cooling.

[0028] To further optimize the present solution, the elastic resin transmission clamp 7 is a horizontally placed U-shaped structure as a whole, and the two ends of the U-shaped structure are respectively abutted against the combined reflector 5 and the transmission cover plate 4. The elastic resin transmission clamp 7 is made of transparent resin, which is used to fasten the laser cooling element 6 on the one hand, and to transmit infrared light on the other hand to sense the temperature of the working surface of the grinding wheel.

[0029] Each component inside the grinding wheel body is bonded to the inner wall of the refrigeration chamber 3 by solid glue, which ensures the stability of the grinding wheel body during operation.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser intelligent refrigeration grinding wheel, comprising a grinding wheel body and a laser generator (1) for emitting a pump laser, wherein the grinding wheel body comprises a grinding wheel base (2) and an abrasive layer uniformly covering the side wall of the grinding wheel base, characterized in that: A refrigeration cavity (3) for accommodating a laser refrigeration element (6) is provided on the inner side of the outer edge of the grinding wheel base (2); one end of the refrigeration cavity (3) penetrates the end surface of the grinding wheel base (2); and the grinding wheel base (2) is provided with a transmission cover plate (4) on the outer side of the refrigeration cavity for irradiating a pump laser into the refrigeration cavity (3); a combined reflector (5) is provided inside the refrigeration cavity (3) on a side away from the transmission cover plate (4); the laser refrigeration element (6) is provided between the combined reflector (5) and the transmission cover plate (4); an elastic resin transmission clamp (7) for fastening the laser refrigeration element (6) is provided on the top of the laser refrigeration element (6); the emitting end of the laser generator (1) faces the laser refrigeration element (6); and the laser refrigeration element (6) is pumped. When the laser is excited, fluorescence with a shorter wavelength is generated for removing heat, thereby reducing the temperature of the laser cooling element (6) and the grinding wheel body, thereby achieving cooling; one side of the top of the combined reflector (5) extends toward the elastic resin transmission clamp (7) and forms an inclined surface (8) for reflecting infrared radiation generated at the inner side of the bottom of the cooling chamber (3); the inclined surface (8) transmits the infrared radiation generated at the inner side of the bottom of the cooling chamber (3) to the infrared temperature sensor (9) arranged on the outer side of the grinding wheel base (2) via the elastic resin transmission clamp (7); the elastic resin transmission clamp (7) is a horizontally placed U-shaped structure as a whole, and the two ends of the U-shaped structure are respectively in contact with the combined reflector (5) and the transmission cover plate (4); the laser cooling element (6) is made of thulium ion-doped yttrium lithium fluoride crystal or Er 3+ Doped ZBLAN fluoride glass.

2. The laser intelligent refrigeration grinding wheel according to claim 1, characterized in that: The infrared temperature sensor (9) and the laser generator (1) are both connected to a computer control system (10).

3. The laser intelligent refrigeration grinding wheel according to claim 1, characterized in that: An infrared reflector (11) is also obliquely arranged between the infrared temperature sensor (9) and the grinding wheel base (2), and the infrared reflector (11) reflects infrared radiation emitted from the elastic resin transmission clamp (7) to the infrared temperature sensor (9).

4. The laser intelligent refrigeration grinding wheel according to claim 3 is characterized in that: The angles between the infrared reflector (11) and the inclined plane (8) and the horizontal direction are both 45 degrees.

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