A vertical refrigeration grinding wheel device

Abstract

The present invention discloses a vertical refrigeration grinding wheel device, including a grinding wheel handle, a waterproof conductive slip ring, a conductive slip ring stator fixing mechanism, a circular radiator assembly, an electric connector, and a grinding wheel disc assembly. The waterproof conductive slip ring and the circular radiator are sequentially inserted into the handle of the grinding wheel handle, and the conductive slip ring stator fixing mechanism is fixedly connected to the outer side of the waterproof conductive slip ring stator through a clamp. One end of the electric connector is connected to the outlet line of the waterproof conductive slip ring rotor, and the other end is connected to the outlet line of the circular refrigeration plate in the grinding wheel disc assembly. The grinding wheel disc assembly is threadedly connected to the handle on the grinding wheel handle through the grinding wheel disc. The present invention can effectively electrically cool the grinding wheel when the grinding wheel is rotating and grinding, and the cooling temperature can reach 0°C to -40°C. The device as a whole can also fully dissipate heat by itself, effectively reducing the grinding heat, thermal damage to the workpiece surface, and the wear rate of the grinding wheel during grinding, reducing the production cost, and improving the grinding quality.

Description

Technical Field

[0001] The invention relates to the technical field of precision grinding, in particular to a vertical refrigeration grinding wheel device. Background Art

[0002] As an efficient and high-precision material removal method, grinding wheel grinding is widely used in parts processing fields with high precision and high surface quality requirements such as mechanical manufacturing, aerospace, automobiles, and medical equipment. The basic principle of grinding wheel grinding is to use the friction, scoring and scraping between the grinding wheel and the workpiece surface to remove the material on the workpiece surface to achieve the required size, shape and surface quality. The factors affecting the quality of grinding wheel grinding are complex. Among them, grinding temperature is a key factor affecting the surface quality of the workpiece, especially when grinding materials with low thermal conductivity, the temperature rise is obvious. If the grinding temperature is too high, defects such as thermal deformation, thermal burns, and thermal residual stress will appear on the surface of the workpiece, which will seriously affect the processing accuracy and surface quality of the workpiece. At the same time, it will cause sharp wear of the grinding wheel and reduce the service life of the grinding wheel. Therefore, it is crucial to effectively reduce the grinding temperature of the grinding wheel to improve the surface quality, dimensional accuracy level and service life of the processed parts.

[0003] At present, the common grinding cooling method is to use grinding coolant and liquid nitrogen as cooling medium for grinding wheel grinding. However, since some chemical substances are inevitably added to the grinding coolant, long-term use will cause harm to the human body and equipment. At the same time, in some specific environments, the coolant is easy to deteriorate, affecting the cooling and processing effects, and increasing the cost of use. Moreover, for some special materials that are hygroscopic and easy to react with grinding coolant, dry grinding can only be used, and air cooling is generally used for heat dissipation, which has poor heat dissipation effect. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a vertical refrigeration grinding wheel device, which can achieve stable electrical transmission during the rotation processing, and effectively electrically cool the grinding wheel through the built-in circular electric cooling plate. At the same time, the device body can rotate through the grinding wheel and perform natural air cooling under the action of the heat dissipation plate and the circular radiator, thereby effectively improving the refrigeration effect, reducing the grinding heat and thermal surface damage of the workpiece during grinding processing, slowing down the wear of the grinding wheel, extending the service life of the grinding wheel, reducing production costs, and improving the grinding quality and grinding efficiency.

[0005] The utility model comprises a grinding wheel handle, a waterproof conductive slip ring, a conductive slip ring stator fixing mechanism, a circular radiator component, an electric connector and a grinding wheel disc component.

[0006] The grinding wheel handle includes a handle, a rivet, and a waterproof wire plug. The rivet is connected to the handle by a thread. The handle is hollow inside, with a wire hole, a pair of heat exchange ventilation holes (for air circulation inside the device and outside), a pair of heat dissipation holes, four evenly distributed screw fastening grooves, a mounting keyway, and a retaining ring groove on the circumferential side. The waterproof wire plug is installed in the wire hole. When grinding, the grinding wheel handle is directly clamped on the quick-change joint of the machine tool spindle.

[0007] The waterproof conductive slip ring includes a rotor, a stator, and a circumferential fastening screw. The stator and rotor of the waterproof conductive slip ring are a combined structure, and the stator and the rotor can rotate relative to each other. The waterproof conductive slip ring is inserted into the tool handle by cold pressing until it reaches the positioning step to complete the axial positioning. And the circumferential fastening screw is screwed into the screw fastening groove on the tool handle for circumferential fixation. When the tool handle rotates, the rotor rotates with it. The waterproof conductive slip ring rotor output line passes through the waterproof wire plug on the tool handle and enters the inside of the tool handle, and is connected to the upper end of the electrical connector. The waterproof conductive slip ring stator output line is connected to the external electrical system, which is responsible for power supply and temperature monitoring and collection. The outer side of the waterproof conductive slip ring stator is connected to the conductive slip ring stator fixing mechanism. The waterproof conductive slip ring can effectively realize stable electrical transmission during the grinding and rotation of the grinding wheel.

[0008] The fixing mechanism of the conductive slip ring stator includes a clamp, a fixing rod, a limiting rod, an elastic clip, an elastic clip fixing screw, a clamp bolt, and a clamp nut. The clamp is locked and fixed to the outside of the waterproof conductive slip ring stator by the clamp bolt and the clamp nut, and the right side of the fixing rod passes through the clamp bolt, and the fixing clamp is on the middle side of the clamp. The elastic clip is installed on the left side of the fixing rod by the elastic clip fixing screw. The non-threaded side of the limiting rod is directly inserted into the elastic clip for fastening, and the threaded side is installed in the limiting hole of the main shaft fixing flange when the device is installed. The circumferential movement of the waterproof conductive slip ring stator is effectively realized and limited through this mechanism to prevent the waterproof conductive slip ring stator from rotating with the rotor during processing.

[0009] The circular heat sink assembly includes a circular heat sink, a key, and a retaining ring. The key is installed in the keyway of the tool handle. A non-through keyway is opened inside the circular heat sink. The circular heat sink is inserted into the tool handle along the key position through the keyway to complete axial positioning and circumferential positioning. The retaining ring is installed in the retaining ring groove of the tool handle to axially fix the circular heat sink. The heat inside the device is conducted to the circular heat sink through the heat dissipation holes on the tool handle, and then the heat is conducted to the air through the heat sink on the circular heat sink, effectively realizing the overall heat dissipation of the device.

[0010] The main function of the electrical connector is to connect the wires. The upper end of the electrical connector is connected to the outlet of the waterproof conductive slip ring rotor, and the lower end is connected to the outlet of the circular cooling plate.

[0011] The grinding wheel assembly includes a grinding wheel, a heat sink outer ring high temperature resistant sealing ring, a heat sink inner ring high temperature resistant sealing ring, a heat sink, a circular cooling fin, a heat conductive pressure plate, a grinding wheel high temperature resistant sealing ring, a grinding wheel, a gasket, and a nut. The inner side of the grinding wheel is provided with two heat sink sealing ring mounting grooves, one for the inner ring and the other for the outer ring. The heat sink inner ring high temperature resistant sealing ring and the heat sink outer ring high temperature resistant sealing ring are sequentially mounted in the grooves. Three fan-shaped holes of the same size are opened on the outer side of the grinding wheel. The side of the heat sink with the heat sink is inserted into the grinding wheel through the fan-shaped holes, and at the same time forms a sealed installation with the heat sink inner ring high temperature resistant sealing ring and the heat sink outer ring high temperature resistant sealing ring. The circular cooling fin is inserted into the grinding wheel with one side of the hot end surface, and is tightly attached to the surface of the heat sink without the heat sink. The outlet wire of the circular cooling fin enters the grinding wheel through one of the wire holes in the grinding wheel and is connected to the lower end of the electrical connector. The heat-conducting pressure plate is a graphite material with good thermal conductivity. The heat-conducting pressure plate is inserted into the grinding wheel disc, and its upper surface is installed close to the cold end surface of the circular refrigeration plate. A sealing groove is opened on the end surface of the grinding wheel disc, and the high-temperature resistant sealing ring of the grinding wheel is installed in the groove. The grinding wheel is inserted and installed on the end surface of the grinding wheel disc, and fits with the lower surface of the heat-conducting pressure plate. The outer ring of the grinding wheel and the high-temperature resistant sealing ring of the grinding wheel are installed closely to form a seal. Then it is tightened in sequence by gaskets and nuts. The grinding wheel disc and the tool handle are connected by threads.

[0012] Compared with the prior art, the technical effect of the present invention is that when the grinding wheel is rotating and grinding, the device can achieve effective and stable electrical transmission. When the grinding wheel device is powered on, the built-in circular cooling plate is powered on. After power is turned on, the cold end of the circular cooling plate absorbs heat and cools, and conducts temperature between the heat-conducting pressure plate and the grinding wheel to cool the grinding wheel. The hot end of the circular cooling plate releases heat, and the generated heat is heat-conducted through the heat dissipation plate, and the heat is released into the air through the heat dissipation plate on the heat dissipation plate. In addition, since the grinding wheel rotates during grinding, air flow is generated around it, generating a wind cooling effect, effectively accelerating the heat release, and forming a good cooling effect. In addition, part of the heat enters the inside of the tool handle and is dissipated and conducted to the air through the circular radiator. The present invention can achieve effective electrical cooling of the grinding wheel during grinding, and the cooling effect is good. At the same time, it can also assist other liquid heat dissipation and lubrication cooling, reduce the grinding heat and workpiece thermal surface damage during grinding, slow down the wear of the grinding wheel, extend the service life of the grinding wheel, reduce production costs, and improve grinding quality and grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an exploded view according to an embodiment of the present invention;

[0014] Figure 2 is an axonometric view according to an embodiment of the present invention;

[0015] Figure 3 is a left sectional view according to an embodiment of the present invention;

[0016] Figure 4 is a right sectional view of an embodiment of the present invention;

[0017] Figure 5 is a schematic diagram of heat exchange refrigeration according to an embodiment of the present invention; DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention includes a grinding wheel handle 1, a waterproof conductive slip ring 2, a conductive slip ring stator fixing mechanism 3, a circular radiator assembly 4, an electrical connector 5, and a grinding wheel disc assembly 6.

[0020] The grinding wheel handle 1 comprises a handle 11 , a rivet 12 , and a waterproof wire plug 13 .

[0021] The waterproof conductive slip ring 2 includes a rotor 21 , a stator 22 , and circumferential fastening screws 23 .

[0022] The conductive slip ring stator fixing mechanism 3 comprises a clamp 31 , a fixing rod 32 , a limiting rod 33 , an elastic buckle 34 , an elastic buckle fixing screw 35 , a clamp bolt 36 , and a clamp nut 37 .

[0023] The circular heat sink assembly 4 includes a circular heat sink 41 , a key 42 , and a retaining spring 43 .

[0024] The grinding wheel assembly 6 includes a grinding wheel 61, a heat dissipation plate outer ring high temperature resistant sealing ring 62, a heat dissipation plate inner ring high temperature resistant sealing ring 63, a heat dissipation plate 64, a circular cooling plate 65, a heat conductive pressure plate 66, a grinding wheel high temperature resistant sealing ring 66, a grinding wheel 68, a gasket 69, and a nut 70.

[0025] like Figure 2 , Figure 3 and Figure 4 As shown, the grinding wheel handle 1 includes a handle 11, a rivet 12, and a waterproof wire plug 13. The rivet 12 is connected to the handle 11 by a thread. The handle is hollow inside, and its circumferential side is provided with a wire hole, a pair of heat exchange ventilation holes (for air circulation inside the device and the outside), a pair of heat dissipation holes, four evenly distributed screw fastening grooves, a mounting keyway and a retaining ring groove. The waterproof wire plug is installed in the wire hole. When performing grinding processing, the grinding wheel handle is directly clamped on the quick-change joint of the machine tool spindle.

[0026] like Figure 2 and Figure 3As shown, the waterproof conductive slip ring 2 includes a rotor 21, a stator 22, and a circumferential fastening screw 23. The stator 22 and the rotor 21 of the waterproof conductive slip ring 2 are a combined structure, and the stator 22 and the rotor 21 can rotate relative to each other. The waterproof conductive slip ring 2 is inserted into the handle 11 by cold pressing until it reaches the positioning step to complete the axial positioning. The circumferential fastening screw 23 is screwed into the screw fastening groove on the handle 11 for circumferential fixation. When the handle 11 rotates, the rotor 21 rotates together. The outlet wire of the rotor 21 of the waterproof conductive slip ring 2 passes through the waterproof wire plug 13 on the handle 11 and enters the inside of the handle 11, and is connected to the upper end of the electrical connector 5. The outlet wire of the stator 22 of the waterproof conductive slip ring 2 is connected to the external electrical system, which is responsible for power supply and temperature monitoring and collection. The outer side of the stator 22 of the waterproof conductive slip ring 2 is connected to the stator fixing mechanism 3 of the conductive slip ring. The waterproof conductive slip ring 2 can effectively realize stable electrical transmission during the grinding and rotation process of the grinding wheel.

[0027] like Figure 2 As shown, the stator fixing mechanism 3 of the conductive slip ring includes a clamp 31, a fixing rod 32, a limiting rod 33, an elastic buckle 34, an elastic buckle fixing screw 35, a clamp bolt 36, and a clamp nut 37. The clamp 31 is locked and fixed to the outside of the stator 22 of the waterproof conductive slip ring 2 by the clamp bolt 36 and the clamp nut 37, and the right side of the fixing rod 32 passes through the clamp bolt 36 and is fixed to the middle side of the clamp 31. The elastic buckle 34 is installed on the left side of the fixing rod 32 by the elastic buckle fixing screw 35. The side of the limiting rod 33 without threads is directly inserted into the elastic buckle 34 for fastening connection, and the side with threads is installed in the limiting hole of the main shaft fixing flange when the device is installed. The circumferential movement of the stator 22 of the waterproof conductive slip ring 2 is effectively realized and limited by this mechanism to prevent the stator 22 of the waterproof conductive slip ring 2 from rotating with the rotor 21 during processing.

[0028] like Figure 3 and 4 As shown, the circular heat sink assembly 4 includes a circular heat sink 41, a key 42, and a retaining spring 43. The key 42 is installed in the keyway of the handle 11. A non-through keyway is provided inside the circular heat sink 41. The circular heat sink 41 is inserted into the handle 11 along the keyway to complete axial positioning and circumferential positioning. The retaining spring 43 is installed in the retaining spring groove of the handle 11 to axially fix the circular heat sink 41. The heat inside the device is conducted to the circular heat sink 41 through the heat dissipation holes on the handle 11, and then the heat is conducted to the air through the heat sink on the circular heat sink 41, effectively realizing the overall heat dissipation of the device.

[0029] like Figure 3 As shown, the electrical connector 5 is mainly used for wire connection. The upper end of the electrical connector 5 is connected to the outlet of the rotor 21 of the waterproof conductive slip ring 2, and the lower end is connected to the outlet of the circular cooling plate 65.

[0030] like Figure 3and 4 As shown, the grinding wheel assembly 6 includes a grinding wheel 61, a heat sink outer ring high temperature resistant sealing ring 62, a heat sink inner ring high temperature resistant sealing ring 63, a heat sink 64, a circular cooling fin 65, a heat conducting pressure plate 66, a grinding wheel high temperature resistant sealing ring 66, a grinding wheel 68, a gasket 69, and a nut 70. The inner side of the grinding wheel 61 is provided with two heat sink sealing ring mounting grooves, the inner ring and the outer ring, respectively, and the heat sink inner ring high temperature resistant sealing ring 63 and the heat sink outer ring high temperature resistant sealing ring 62 are sequentially mounted in the grooves. Three fan-shaped holes of the same size are opened on the outer side of the grinding wheel 61, and the side of the heat sink 64 with the heat sink is inserted into the grinding wheel 61 through the fan-shaped holes, and at the same time forms a sealed installation with the heat sink inner ring high temperature resistant sealing ring 63 and the heat sink outer ring high temperature resistant sealing ring 62. The circular cooling fin 65 is inserted into the grinding wheel disc 61 with one side of the hot end surface, and is closely attached to the surface of the heat dissipation disc 64 without the heat dissipation fin. The outlet wire of the circular cooling fin 65 enters the grinding wheel disc 61 through the wire hole in the grinding wheel disc 61 and is connected to the lower end of the electrical connector 5. The heat-conducting pressure plate 66 is a graphite material with good thermal conductivity. The heat-conducting pressure plate 66 is inserted into the grinding wheel disc 61, and its upper surface is installed closely to the cold end surface of the circular cooling fin 65. A sealing groove is provided on the surface of the end 61 of the grinding wheel disc, and a high-temperature resistant sealing ring 66 of the grinding wheel is installed in the groove. The grinding wheel 68 is inserted into the end face of the grinding wheel disc 61 and fits the lower surface of the heat-conducting pressure plate 66. The outer ring of the grinding wheel 68 is closely attached to the high-temperature resistant sealing ring 66 of the grinding wheel to form a seal. Then it is tightened in sequence by the gasket 69 and the nut 70. The grinding wheel disc 61 is connected to the handle 11 by threads.

[0031] like Figure 5 As shown, it is a schematic diagram of the heat exchange refrigeration principle according to an embodiment of the present invention. The cooling and heat dissipation principle of the device is as follows: the cold end of the circular cooling plate 65 absorbs heat for cooling, and heat is exchanged between the heat-conducting pressure plate 66 and the grinding wheel, so as to absorb heat and cool the grinding wheel 68, and at the same time absorb the grinding heat generated by the grinding wheel 68. The hot end of the circular cooling plate 65 releases heat, and the generated heat is released into the air through the heat dissipation plate 64. At the same time, due to the self-rotation of the grinding wheel 68 during the grinding process, air flow is generated around it, which produces a wind-cooling effect, effectively accelerating the release of heat on the heat dissipation plate 64, and forming a good cooling effect. In addition, part of the grinding heat and part of the heat released by the circular cooling plate 65 enter the inside of the tool handle 11, and are dissipated and conducted to the air through the circular radiator 41.

[0032] When the present invention is used, the grinding wheel handle 1 is directly clamped on the quick-change joint of the machine tool spindle. The threaded side of the limit rod 33 on the conductive slip ring stator fixing mechanism 3 is installed in the limit hole of the spindle fixing flange, and the non-threaded side of the limit rod 33 is directly inserted into the elastic buckle 34 on the conductive slip ring stator fixing mechanism 3 for fastening connection. The rotation of the machine tool spindle drives the grinding wheel handle 1 to rotate, the waterproof conductive slip ring 2 rotor 21 rotates, and the stator 22 is fixed. Use an external electrical system to connect the waterproof conductive slip ring 2 stator 22 outlet to power the device. At this time, the electricity enters from the waterproof conductive slip ring 2 stator 22 end, exits from the waterproof conductive slip ring 2 rotor side, and is then transmitted to the circular cooling plate 65 through the electrical connector 5. After power is turned on, the circular cooling plate 65 absorbs heat and cools, and heat is exchanged with the grinding wheel 68 through the heat-conducting pressure plate 66, taking away the heat generated by the grinding wheel 68 during grinding, and the absorbed heat is released to the air through the heat dissipation plate 64 and the circular radiator 41, generating circulating cooling. Thereby, grinding cooling and heat dissipation are realized during the grinding process of the grinding wheel.

[0033] The combined action between the waterproof conductive slip ring 2 and the conductive slip ring stator fixing mechanism 3 in the present invention can effectively realize the relative movement between the waterproof conductive slip ring 2 rotor 21, the grinding wheel handle 1 and the waterproof conductive slip ring 2 stator 22 during the processing, thereby realizing stable electrical transmission during the rotary grinding process.

[0034] In the present invention, after the circular cooling plate 65 is powered on, the cold end absorbs heat for cooling, and the hot end releases heat, forming a temperature difference effect, and the cooling temperature can reach 0 to -40°C.

[0035] The present invention uses the heat dissipation plate outer ring high temperature resistant sealing ring 62, the heat dissipation plate inner ring high temperature resistant sealing ring 63, the grinding wheel high temperature resistant sealing ring 66, the waterproof wire plug 13, etc. to make the device body seal and waterproof. Under the condition of electric refrigeration, other liquids can be used to assist cooling and lubrication, so as to increase the grinding heat dissipation efficiency faster and effectively improve the grinding quality.

[0036] The present invention has a simple structure and is easy to disassemble and assemble. The internal electrical components, such as the waterproof conductive slip ring 2, the electrical connector 5, and the circular cooling sheet 65, can be replaced at any time. Similarly, the grinding wheel 68 that has been worn out can also be replaced at any time.

[0037] Although embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the present invention is not limited to the details of the specific embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in a claim should not be regarded as limiting the claim involved.

Claims

1. A vertical refrigeration grinding wheel device, characterized in that: It comprises a grinding wheel handle (1), a waterproof conductive slip ring (2), a conductive slip ring stator fixing mechanism (3), a circular radiator assembly (4), an electrical connector (5), and a grinding wheel disc assembly (6); The grinding wheel handle (1) comprises a handle (11), a rivet (12), and a waterproof wire plug (13), wherein the rivet (12) is connected to the handle (11) by threading, and the waterproof wire plug is installed in a wire hole on the handle (11); The waterproof conductive slip ring (2) comprises a rotor (21), a stator (22), and a circumferential fastening screw (23); the rotor (21) and the stator (22) are assembled and installed; the rotor (21) is cold-fitted on the tool handle (11), and the circumferential fastening screw (23) is inserted into four circumferentially distributed screw fastening grooves on the tool handle for circumferential fastening; the outlet wire of the rotor (21) passes through the waterproof wire plug (13) on the tool handle (11) and enters the interior of the tool handle; The conductive slip ring stator fixing mechanism (3) is tightly connected to the outer ring of the stator (22) at the upper end; The circular heat sink assembly (4) comprises a circular heat sink (41), a key (42), and a retaining spring (43); the key (42) is installed in a keyway of the tool handle (11); a non-through keyway is provided on the inner ring of the circular heat sink (41); the circular heat sink (41) is axially and circumferentially fixedly installed on the tool handle (11) by means of the key (43); the retaining spring (43) is installed in the retaining spring groove of the tool handle (11) and is used for axially fixing the other end of the circular heat sink (41); The upper end of the electrical connector (5) is connected to the outlet wire of the rotor (21) entering the interior of the tool handle (11) at the upper end, and the lower end of the electrical connector (5) is electrically connected to the grinding wheel assembly (6); The grinding wheel assembly (6) is connected to the upper end of the tool handle (11) via threads; The grinding wheel assembly (6) comprises a grinding wheel (61), a heat dissipation plate outer ring high temperature resistant sealing ring (62), a heat dissipation plate inner ring high temperature resistant sealing ring (63), a heat dissipation plate (64), a circular cooling plate (65), a heat conduction pressure plate (66), a grinding wheel high temperature resistant sealing ring (66), a grinding wheel (68), a gasket (69), and a nut (70). The heat dissipation plate inner ring high temperature resistant sealing ring (63) and the heat dissipation plate outer ring high temperature resistant sealing ring (62) are installed in a sealing manner on the grinding wheel (61). In the sealing groove, the heat dissipation plate (64), the circular cooling plate (65) and the heat-conducting pressure plate (66) are sequentially inserted into the heat dissipation plate (64); the grinding wheel high temperature resistant sealing ring (66) is installed in the sealing groove on the bottom end surface of the grinding wheel disc (61); the grinding wheel (68) is inserted and installed on the bottom end surface of the grinding wheel disc (61) and fastened by the gasket (69) and the nut (70); the grinding wheel disc (61) is connected to the tool handle (11) by threads.

2. A vertical refrigeration grinding wheel device according to claim 1, characterized in that: The conductive slip ring stator fixing mechanism (3) comprises a clamp (31), a fixing rod (32), a limiting rod (33), an elastic buckle (34), an elastic buckle fixing screw (35), a clamp bolt (36), and a clamp nut (37); the clamp (31) is fastened to the outer ring of the stator (22) by means of the clamp bolt (36) and the clamp nut (37); the fixing rod (32) is fixed to the middle position of one side of the clamping of the clamp bolt (36) and the clamp nut (37) on the clamp (31); the elastic buckle (34) is fastened to the fixing rod (32) by means of the elastic buckle fixing screw (35); and the non-threaded side of the limiting rod (33) is clamped and fixed in the elastic buckle (34).

3. A vertical refrigeration grinding wheel device according to claim 1, characterized in that: The side of the heat sink (64) with the heat sink is inserted into the grinding wheel disc (61) through the fan-shaped hole on the grinding wheel disc (61), and at the same time forms a sealed installation with the heat sink inner ring high temperature resistant sealing ring (63) and the heat sink outer ring high temperature resistant sealing ring (62) at the upper end. The circular cooling fin (65) is inserted into the grinding wheel disc (61) with the hot end surface side, and is tightly attached to the surface of the heat sink (64) without the heat sink. The heat conductive pressure plate (66) is inserted into the grinding wheel disc (61), and its upper surface is tightly attached to the cold end surface of the circular cooling fin (65), and the surface with the mounting groove is tightly attached to the mounting surface of the grinding wheel (68).

4. A vertical refrigeration grinding wheel device according to claim 1 or 3, characterized in that: The outgoing wire of the circular cooling plate (65) enters the grinding wheel disc (61) along the wire hole in the grinding wheel disc (61) and is connected to the lower end of the electrical connector (5).

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