Split type internal cooling molar device

Abstract

The utility model discloses a split type internal cooling molar device. The tooth grinding device comprises a tooth grinding wheel, a cooling block, a phase change cooling body and a rotating shaft, positioning grooves are symmetrically formed in two side surfaces of the tooth grinding wheel; a cooling ring is arranged on the inner side of a positioning end plate of the cooling block and provided with a concave cooling groove, the positioning end plate is attached to a grinding body of the tooth grinding wheel, the cooling ring is inserted into the positioning groove in an equal-diameter mode, the positioning end plate seals the cooling groove through a first end direction sealing ring and a second end direction sealing ring, and the cooling ring seals the positioning groove through a first radial sealing ring and a second radial sealing ring. The phase-change cooling body is a solid-liquid phase-change material filled in the cooling tank, and the phase-change material maintains the tooth grinding wheel at a proper temperature for stable and efficient grinding through melting heat absorption; and the other end of the rotating shaft is connected with the driving part. The LED lamp has the advantages of being simple in structure, convenient to machine and assemble, good in heat dissipation effect, long in service life and high in product yield.

Description

Technical Field

[0001] This utility model relates to the field of machine tool manufacturing, and in particular to a split-type internally cooled gear grinding device. Background Technology

[0002] Machine cutting tools are an important component of machining equipment. During the production of machine cutting tools (such as taps), grinding equipment is used to grind the teeth. When the grinding wheel rotates and grinds the blank, the hard cutting between metals generates a large amount of heat. Especially during single-sided skip-tooth machining, the grinding speed is further increased, requiring even more heat to be dissipated quickly. In some dry grinding equipment, there is no dedicated cooling device. The operator stops the grinding operation based on their experience, observing the condition of the grinding wheel or the surface quality of the workpiece. During interruptions, heat is dissipated through air cooling or coolant flushing. The drawbacks are: firstly, human error can easily damage the grinding wheel, increasing the probability of workpiece defects, reducing yield, and increasing product costs; secondly, frequent interruptions reduce operating time, resulting in low processing efficiency and making it unsuitable for large-scale production. Utility Model Content

[0003] To address one or more of the aforementioned problems, this invention provides a split-type internally cooled dental grinding device.

[0004] According to one aspect of the present invention, a split-type internally cooled tooth grinding device includes: a tooth grinding wheel, a cooling block, a phase change cooling body, and a rotating shaft;

[0005] The grinding wheel includes an annular grinding body, and the two sides of the grinding body are symmetrically provided with positioning grooves with annular groove structures;

[0006] A cooling ring is integrally provided in the middle of the inner side wall of the outer positioning end plate of the cooling block. The inner side wall of the cooling ring is provided with a concave cooling groove. The cooling groove is a circular arc groove of several circumferential arrays or a circular ring groove. Two cooling blocks are symmetrically arranged on both sides of the grinding body. The positioning end plate is attached to the two side walls of the grinding body and the cooling ring is attached to the positioning groove with an equal diameter insert. The positioning end plate seals the upper and lower edges of the cooling groove through the first endo-facing sealing ring and the second endo-facing sealing ring. The cooling ring seals the positioning groove through the first radial sealing ring and the second radial sealing ring.

[0007] The phase change cooling body is a solid-liquid phase change material filled in the cooling tank. The phase change cooling body is attached to the grinding body. The phase change material maintains the grinding wheel at a suitable temperature for stable and efficient grinding by melting and absorbing heat.

[0008] One end of the rotating shaft is fixedly connected to the central shaft hole of the grinding wheel, and the other end is fixedly connected to the drive unit.

[0009] In some embodiments, a first lower sealing ring groove is provided in the middle of the upper edge of the outer wall of the cooling ring and a first upper sealing ring groove is provided in the middle of the lower edge; a second upper sealing ring groove is provided in the upper edge of the inner wall of the positioning groove and a second lower sealing ring groove is provided in the lower edge; the upper end of the first radial sealing ring is interference-fitted into the second upper sealing ring groove and the lower end is interference-fitted into the first lower sealing ring groove; the upper end of the second radial sealing ring is interference-fitted into the first upper sealing ring groove and the lower end is interference-fitted into the second lower sealing ring groove.

[0010] In some embodiments, the first end is interference-fitted onto the first outer sealing ring groove of the positioning end plate and the inner end is interference-fitted onto the second outer sealing ring groove of the grinding body, and the second end is interference-fitted onto the first inner sealing ring groove of the positioning end plate and the inner end is interference-fitted onto the second inner sealing ring groove of the grinding body.

[0011] In some embodiments, the first lateral sealing ring and the second lateral sealing ring are O-rings, and the radial sealing ring is a sealing ring with a plurality of inverted V-shaped protrusions and V-shaped grooves evenly spaced on its circumferential wall.

[0012] In some embodiments, the inner wall of the positioning groove is provided with a plurality of circumferentially arranged first threaded holes, and a first threaded component passes through the first transverse through hole of the cooling block and is threaded into the first threaded hole to fix the cooling block and the grinding wheel in place; wherein:

[0013] When the cooling groove is a series of circular arc grooves arranged in a circular array, the first transverse through hole is set between adjacent circular arc grooves;

[0014] When the cooling tank is an annular groove, the first transverse through hole is set at the center of several protruding connecting posts in the middle of the annular groove, and the protruding connecting posts are attached to the inner end wall of the positioning groove.

[0015] In some embodiments, the grinding body is also provided with a plurality of circumferentially arrayed transverse guide holes, the two ends of which are connected to two cooling grooves.

[0016] In some embodiments, the grinding body is integrally formed and connected to the middle section of the outer peripheral wall of the cylindrical base of the grinding wheel, the cooling block is an annular body, the width of the grinding body is smaller than that of the base, and the central through hole of the cooling block passes through the flanges on both sides of the base.

[0017] In some embodiments, two cooling blocks are integrally connected to the outer end of the locking disc and the outer end ring of the rotating shaft; the two end faces of the base are provided with second threaded blind holes, and the second threaded component is screwed into the second threaded blind hole through the through hole of the locking disc and the through hole of the outer end ring to achieve a detachable fixed connection.

[0018] In some embodiments, the outer peripheral wall of the grinding body is provided with a first single-sided grinding tooth and a second single-sided grinding tooth that are connected to each other. The first single-sided grinding tooth and the second single-sided grinding tooth achieve a single-sided grinding structure by reducing the angle between the suspended surface and the vertical surface or by raising the middle diameter. The axial distance between the two is at least twice the tooth pitch of the workpiece to be ground, thereby achieving skip-tooth processing.

[0019] In some embodiments, the solid-liquid phase change material is a paraffin-based organic phase change material or a graphite-based composite phase change material;

[0020] Alternatively, the drive unit may be a gear transmission system.

[0021] This split-type internally cooled grinding device uses a detachable cooling block and a cooling tank for storing phase change cooling media on the grinding wheel. The phase change cooling media absorbs a large amount of heat during phase changes, extending the grinding time at a stable temperature. During workpiece changes, the phase change cooling media quickly releases heat and returns to its original state, allowing for cyclical operation. It is suitable for dry grinding applications. Its advantages include: firstly, the split structure is simple and has excellent heat dissipation, requiring no changes to the equipment structure, reducing human error, effectively protecting tools and workpieces, improving product quality, and eliminating the need for frequent downtime. Firstly, the split structure improves operating time and processing efficiency, making it suitable for large-scale continuous production. Secondly, the components are easy to manufacture and assemble, effectively reducing equipment costs. Thirdly, the split structure uses equal-diameter inserts for positioning grooves and cooling rings, resulting in high installation accuracy and easy achievement of good processing precision and heat dissipation. Fourthly, the device uses a first endo-sealing ring and a second endo-sealing ring for endo-sealing, and a first radial sealing ring and a second radial sealing ring for radial sealing, providing excellent sealing performance, effectively preventing the phase change cooling body from overflowing, ensuring uniform heat dissipation, and extending service life. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of a split-type internally cooled dental grinding device according to Embodiment 1 of this utility model;

[0023] Figure 2 for Figure 1 A cross-sectional schematic diagram of a split-type internally cooled dental grinding device is shown.

[0024] Figure 3 for Figure 2 The diagram shows an enlarged schematic of section I of a split-type internally cooled dental grinding device.

[0025] Figure 4 for Figure 2 A magnified schematic diagram of section II of a split-type internally cooled dental grinding device is shown.

[0026] Figure 5 for Figure 1Right view of the cooling block shown;

[0027] Figure 6 for Figure 5 A partially enlarged schematic diagram of the cooling block shown;

[0028] Figure 7 This is a front view schematic diagram of a split-type internally cooled dental grinding device according to Embodiment 2 of this utility model;

[0029] Figure 8 for Figure 7 A cross-sectional schematic diagram of a split-type internally cooled dental grinding device is shown.

[0030] Figure 9 for Figure 8 A magnified schematic diagram of section III of a split-type internally cooled dental grinding device is shown.

[0031] Figure 10 for Figure 2 Or a schematic diagram of the grinding body shown in Figure 7;

[0032] Grinding wheel 1, base 10, central shaft hole 100, second thread blind hole 101, flange 102, grinding body 11, coarse grinding tooth 110, first single-sided grinding tooth 12, right grinding surface 120, left overhanging surface 121, second single-sided grinding tooth 13, left grinding surface 130, right overhanging surface 131, positioning groove 14, first threaded hole 141, second upper sealing ring groove 15, second outer sealing ring groove 16, second inner sealing ring groove 17, second lower sealing ring groove 18, transverse guide hole 19;

[0033] Cooling block 2, cooling groove 20, convex connecting column 201, annular groove 200, positioning end plate 21, cooling ring 22, central through hole 23, first lower sealing ring groove 24, first upper sealing ring groove 25, first outer sealing ring groove 26, first inner sealing ring groove 27, first transverse through hole 28, filling hole 29.

[0034] Phase change cooling body 3;

[0035] Shaft 4, outer end ring 41;

[0036] First lateral sealing ring 5; second lateral sealing ring 6; first radial sealing ring 7;

[0037] Locking disc 8; Second radial sealing ring 9;

[0038] 01. Part to be ground; 02. Drive unit; 03. First threaded part; 04. Filling nozzle; 05. Second threaded part. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0040] Figures 1 to 10 The figure schematically illustrates a split-type internally cooled dental grinding device according to one embodiment of the present invention. As shown, the split-type internally cooled dental grinding device includes: a grinding wheel 1, a cooling block 2, a phase change cooling body 3, and a rotating shaft 4;

[0041] The grinding wheel 1 includes an annular grinding body 11, and the grinding body 11 has positioning grooves 14 with an annular groove structure symmetrically provided on both sides;

[0042] A cooling ring 22 is integrally provided in the middle of the inner side wall of the outer positioning end plate 21 of the cooling block 2. The inner side wall of the cooling ring 22 is provided with a concave cooling groove 20. The cooling groove 20 is a circular arc groove of several circumferential arrays or a circular annular groove 200. The two cooling blocks 2 are symmetrically arranged on both sides of the grinding body 11. The positioning end plate 21 fits against the two side walls of the grinding body 11 and the cooling ring 22 fits against the positioning groove 14 with an equal diameter insert. The positioning end plate 21 is sealed by the first end sealing ring 5 and the second end sealing ring 6. The upper and lower edge cooling rings 22 of the cooling groove 20 seal the positioning groove 14 by the first radial sealing ring 7 and the second radial sealing ring 9.

[0043] The phase change cooling body 3 is a solid-liquid phase change material filled in the cooling tank 20. The phase change cooling body 3 is attached to the grinding body 11. The phase change material maintains the grinding wheel 1 at a suitable temperature for stable and efficient grinding by melting and absorbing heat.

[0044] When the continuous working temperature of the grinding body 11 is too high, the solid-liquid phase change material can melt and absorb heat quickly and effectively, and when the machine stops, it solidifies and releases heat, which is then conducted to the outside for recycling, thereby maintaining the temperature of the grinding wheel 1 at a suitable working temperature for stable and efficient grinding.

[0045] One end of the rotating shaft 4 is fixedly connected to the central shaft hole 100 of the grinding wheel 1, and the other end is fixedly connected to the drive unit 02, which is preferably a gear transmission system.

[0046] This split-type internally cooled grinding device uses a detachable cooling block 2 and a grinding wheel 1 to set up a cooling tank 20 for storing a phase change cooling body 3. The phase change cooling body 3 absorbs a large amount of heat during phase changes, extending the grinding time with stable temperature. During workpiece replacement intervals, the phase change cooling body 3 quickly releases heat and returns to its original state for cyclical operation, making it suitable for dry grinding scenarios. Its advantages are: firstly, the split structure is simple and has good heat dissipation, requiring no changes to the equipment structure, reducing human error, effectively protecting tools and workpieces, improving product quality, and eliminating the need for frequent shutdowns. Firstly, it improves operating time and processing efficiency, making it suitable for large-scale continuous production. Secondly, the modular structure facilitates the processing and assembly of components, effectively reducing equipment costs. Thirdly, the modular structure uses equal-diameter inserts of positioning groove 14 and cooling ring 22, resulting in high installation accuracy and easy achievement of good processing precision and heat dissipation. Fourthly, the device employs a first endo-sealing ring 5 and a second endo-sealing ring 6 for endo-sealing, and a first radial sealing ring 7 and a second radial sealing ring 9 for radial sealing, providing excellent sealing performance, effectively preventing the phase change cooling body 3 from overflowing, ensuring uniform heat dissipation, and extending service life.

[0047] Furthermore, the cooling ring 22 has a first lower sealing ring groove 24 in the middle of the upper edge of its outer wall and a first upper sealing ring groove 25 in the middle of its lower edge. The positioning groove 14 has a second upper sealing ring groove 15 in the upper edge and a second lower sealing ring groove 18 in the lower edge. The first radial sealing ring 7 is interference-fitted at the upper end of the second upper sealing ring groove 15 and at the lower end of the first lower sealing ring groove 24. The second radial sealing ring 9 is interference-fitted at the upper end of the first upper sealing ring groove 25 and at the lower end of the second lower sealing ring groove 18. Preferably, the positioning end plate 21 has a concentric first outer sealing ring groove 26 and a first inner sealing ring groove 27, and the outer wall of the grinding body 11 has a concentric second outer sealing ring groove 16 and a second inner sealing ring groove 17. The first end of the sealing ring 5 is interference-fitted to the outer end of the first outer sealing ring groove 26 and to the inner end of the second outer sealing ring groove 16. The second end of the sealing ring 6 is interference-fitted to the outer end of the first inner sealing ring groove 27 and to the inner end of the second inner sealing ring groove 17. Preferably, the first end sealing ring 5 and the second end sealing ring 6 are O-rings, and the first radial sealing ring 7 is a sealing ring with several inverted V-shaped protrusions and V-shaped grooves evenly spaced on its circumferential wall. The beneficial effects are: the above structure further improves the sealing performance, resulting in excellent heat dissipation performance and a long service life.

[0048] Furthermore, the inner wall of the positioning groove 14 is provided with a plurality of circumferentially arranged first threaded holes 141. The first threaded component 03 passes through the first transverse through hole 28 of the cooling block 2 and is threaded to the first threaded holes 141, thereby fixing the cooling block 2 and the grinding wheel 1 together; wherein:

[0049] When the cooling groove 20 is a series of circular arc grooves arranged in a circular array, the first transverse through hole 28 is provided between adjacent circular arc grooves.

[0050] When the cooling tank 20 is an annular groove 200, the first transverse through hole 28 is positioned at the center of several protruding connecting posts 201 in the middle of the annular groove 200, and the protruding connecting posts 201 fit against the inner end wall of the positioning groove 14. The advantages are: the structure is easy to install and fix, and the overall equipment is compact and small in size.

[0051] Preferably, the first transverse through hole 28 is a stepped through hole or a countersunk through hole, the first threaded hole 141 is a threaded blind hole, and the first threaded component 03 is a cylindrical head screw or a countersunk screw. The effect is that this arrangement further reduces the size of the equipment.

[0052] Furthermore, the grinding body 11 is also provided with several circumferential array of transverse guide holes 19, and the two ends of the transverse guide holes 19 are connected to two cooling grooves 20; its beneficial effect is that the transverse guide holes 19 make the entire structure change temperature, thereby improving the overall heat dissipation efficiency.

[0053] The outer wall of the cooling tank 20 is also provided with a filling hole 29 that connects to the cooling tank 20, and a single-sided sealing filling nozzle 04 is installed on the filling hole 29. The beneficial effect is that this setting facilitates the filling and replenishment of solid-liquid phase change material.

[0054] Furthermore, the grinding body 11 is integrally formed and connected to the middle section of the outer peripheral wall of the cylindrical base 10 of the grinding wheel 1. The central shaft hole 100 of the base 10 and the rotating shaft 4 are connected by a key. The two end faces of the base 10 and the locking disc 8 and the outer end ring 41 of the rotating shaft 4 are positioned and detachably fixed by threads.

[0055] The cooling block 2 is a ring-shaped body. The width of the grinding body 11 is smaller than that of the base body 10. The central through hole 23 of the cooling block 2 passes through the flanges 102 on both sides of the base body 10.

[0056] The central through hole 23 of the cooling block 2 is connected to the outer peripheral wall of the base 10 with a small gap; the outer wall of the cooling block 2 is slightly lower than the minimum diameter of the grinding body 11. Its beneficial effect is that this setup enables high-precision installation and positioning of the grinding wheel 1, achieving high-quality grinding.

[0057] Furthermore, such as Figures 7 to 9 As shown, two cooling blocks 2 are integrally connected to the outer ends of the locking disc 8 and the outer end ring 41; the two end faces of the base 10 are provided with second threaded blind holes 101, and the second threaded parts 05 are screwed into the second threaded blind holes 101 through the through holes of the locking disc 8 and the outer end ring 41 to achieve a detachable fixed connection. Its advantages are: the cooling blocks 2, locking disc 8, and outer end ring 41 are integrated and fixed with a shared set of threaded parts, simplifying the device structure, improving device strength, and allowing for the storage of more phase change material, further increasing heat absorption.

[0058] Furthermore, the phase change cooling body 3 can be any one of inorganic phase change materials, organic phase change materials, and composite phase change materials. The inorganic phase change material is preferably a molten salt or a hydrated crystalline salt. The organic phase change material is preferably paraffin wax. The composite phase change material is preferably any one of graphite-based, graphene-based, and carbon fiber-based phase change materials. Its beneficial effects are: the above materials have large heat absorption and storage capacity and good heat dissipation performance.

[0059] Furthermore, such as Figure 10 As shown, the outer peripheral wall of the grinding body 11 is provided with a first single-sided grinding tooth 12 and a second single-sided grinding tooth 13 that are connected to each other. The left overhanging surface 121 of the first single-sided grinding tooth 12 and the right overhanging surface 131 of the second single-sided grinding tooth 13 do not contact the workpiece 01 to be ground. The right grinding surface 120 of the first single-sided grinding tooth 12 and the left grinding surface 130 of the second single-sided grinding tooth 13 are integrally connected. The axial distance between the two is at least twice the tooth pitch of the workpiece 01 to be ground. The right grinding surface 120 processes the left tooth ridge of the anterior tooth of the workpiece 01 to be ground, and the left grinding surface 130 skips at least one tooth to process the right tooth ridge of the posterior tooth of the workpiece 01 to be ground, so that the grinding start point of the left tooth ridge is always earlier than that of the right tooth ridge. Its beneficial effects are as follows: First, the first single-sided grinding teeth 12 and the second single-sided grinding teeth 13 are independent of each other and have no fixed pitch, which can grind workpieces 01 with various pitches, making it highly versatile. Moreover, the two grinding teeth can be processed simultaneously, resulting in high grinding efficiency. Second, the skip-tooth processing function of the first single-sided grinding teeth 12 and the second single-sided grinding teeth 13 ensures that the grinding start point of the left tooth is always earlier than that of the right tooth. Within a certain width, it can process the left tooth of the workpiece 01 to have a cylindrical cutting edge, while the right tooth does not. The workpiece 01 can withstand higher cutting loads, greatly improving its service life. It is not only suitable for ordinary processing but also for special tool processing, thus expanding its application range.

[0060] Preferably, the first single-sided grinding tooth 12 and the second single-sided grinding tooth 13 achieve a single-sided grinding structure by reducing the angle between the suspended surface and the vertical surface or by raising the middle diameter.

[0061] The method for reducing the angle between the suspended surface and the vertical surface is as follows: the angle between the right grinding surface 120 and the vertical surface of the first single-sided grinding tooth 12 is equal to the half angle of the tooth profile of the workpiece 01 to be ground, and the angle between the left suspended surface 121 and the vertical surface is less than the half angle of the tooth profile of the workpiece 01 to be ground, thus forming a single-sided grinding tooth with right tooth surface grinding and left tooth surface suspended; the angle between the left grinding surface 130 and the vertical surface of the second single-sided grinding tooth 13 is equal to the half angle of the tooth profile of the workpiece 01 to be ground, and the angle between the right suspended surface 131 and the vertical surface is less than the half angle of the tooth profile of the workpiece 01 to be ground, thus forming a single-sided grinding tooth with left tooth surface grinding and right tooth surface suspended.

[0062] The raised middle diameter mode is as follows: the middle diameter of the first single-sided grinding tooth 12 and the second single-sided grinding tooth 13 is higher than the tooth profile middle diameter of the workpiece 01 to be ground, thus forming a single-sided grinding tooth with one side in contact and the other side suspended.

[0063] Preferably, the left end of the first single-sided grinding tooth 12 is also provided with several coarse grinding teeth 110. The beneficial effect is that by setting coarse grinding teeth 110, a larger grinding depth can be used to quickly remove most of the excess material on the surface of the part. Fine grinding uses a very small grinding depth to ensure the micro-processing and high smoothness of the surface of the part. The grinding wheel can complete the dressing work of the workpiece 01 to be ground in one go, ensuring both processing speed and grinding accuracy.

[0064] Preferably, the grinding wheel 1 is a grinding roller or a grinding wheel; the workpiece to be ground 01 is a spiral tap. Its advantages are: this selection provides excellent grinding function and a wide range of applications.

[0065] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A split-type internally cooled dental grinding device, characterized in that, Includes: a grinding wheel (1), a cooling block (2), a phase change cooling body (3), and a rotating shaft (4); The grinding wheel (1) includes an annular grinding body (11), and the grinding body (11) has a positioning groove (14) with an annular groove structure symmetrically provided on both sides. A cooling ring (22) is integrally provided in the middle of the inner side wall of the outer positioning end plate (21) of the cooling block (2). The inner side wall of the cooling ring (22) is provided with a concave cooling groove (20). The cooling groove (20) is a circular arc groove of several circumferential arrays or a circular ring groove (200). The two cooling blocks (2) are symmetrically arranged on both sides of the grinding body (11). The positioning end plate (21) fits against the two side walls of the grinding body (11) and the cooling ring (22) fits against the positioning groove (14) with an equal diameter insert. The positioning end plate (21) seals the upper and lower edges of the cooling groove (20) through the first end sealing ring (5) and the second end sealing ring (6). The cooling ring (22) seals the positioning groove (14) through the first radial sealing ring (7) and the second radial sealing ring (9). The phase change cooling body (3) is a solid-liquid phase change material filled in the cooling tank (20). The phase change cooling body (3) is attached to the grinding body (11). The phase change material maintains the grinding wheel (1) at a suitable temperature for stable and efficient grinding by melting and absorbing heat. One end of the rotating shaft (4) is fixedly connected to the central shaft hole (100) of the grinding wheel (1), and the other end is fixedly connected to the drive unit (02).

2. A split-type internally cooled dental grinding device according to claim 1, characterized in that, The cooling ring (22) has a first lower sealing ring groove (24) in the middle of the upper edge of the outer wall and a first upper sealing ring groove (25) in the middle of the lower edge. The positioning groove (14) has a second upper sealing ring groove (15) in the upper edge and a second lower sealing ring groove (18) in the lower edge. The first radial sealing ring (7) has the second upper sealing ring groove (15) in the upper end and the first lower sealing ring groove (24) in the lower end. The second radial sealing ring (9) has the first upper sealing ring groove (25) in the upper end and the second lower sealing ring groove (18) in the lower end.

3. A split-type internally cooled dental grinding device according to claim 2, characterized in that, The first end of the sealing ring (5) is interference-fitted to the first outer sealing ring groove (26) of the positioning end plate (21) and the inner end is interference-fitted to the second outer sealing ring groove (16) of the grinding body (11). The second end of the sealing ring (6) is interference-fitted to the first inner sealing ring groove (27) of the positioning end plate (21) and the inner end is interference-fitted to the second inner sealing ring groove (17) of the grinding body (11).

4. A split-type internally cooled dental grinding device according to claim 3, characterized in that, The first lateral sealing ring (5) and the second lateral sealing ring (6) are O-rings, and the first radial sealing ring (7) is a sealing ring with several inverted V-shaped protrusions and V-shaped grooves evenly spaced on the circumferential wall.

5. A split-type internally cooled dental grinding device according to claim 1, characterized in that, The inner wall of the positioning groove (14) is provided with several circumferentially arranged first threaded holes (141). The first threaded component (03) passes through the first transverse through hole (28) of the cooling block (2) and is threaded to the first threaded holes (141) to fix the cooling block (2) and the grinding wheel (1) in place; wherein: When the cooling groove (20) is a circular arc groove of several circumferential arrays, the first transverse through hole (28) is set between adjacent circular arc grooves; When the cooling groove (20) is an annular groove (200), the first transverse through hole (28) is set at the center of several protruding posts (201) in the middle of the annular groove (200), and the protruding posts (201) fit against the inner end wall of the positioning groove (14).

6. A split-type internally cooled dental grinding device according to claim 1, characterized in that, The grinding body (11) is also provided with several circumferential array of transverse guide holes (19), and the two ends of the transverse guide holes (19) are connected to two cooling grooves (20).

7. A split-type internally cooled dental grinding device according to any one of claims 1 to 6, characterized in that, The cylindrical base (10) of the grinding wheel (1) is integrally formed with the grinding body (11) in the middle section of the outer peripheral wall. The cooling block (2) is an annular body. The width of the grinding body (11) is smaller than that of the base (10). The central through hole (23) of the cooling block (2) passes through the flanges (102) on both sides of the base (10).

8. A split-type internally cooled dental grinding device according to claim 7, characterized in that, Two cooling blocks (2) are integrally connected to the outer end of the outer ring (41) of the locking disc (8) and the rotating shaft (4); the two ends of the base (10) are provided with second threaded blind holes (101), and the second threaded part (05) is screwed into the second threaded blind hole (101) through the through hole of the locking disc (8) and the through hole of the outer ring (41) to achieve detachable connection.

9. A split-type internally cooled dental grinding device according to claim 7, characterized in that, The outer peripheral wall of the grinding body (11) is provided with a first single-sided grinding tooth (12) and a second single-sided grinding tooth (13) that are connected to each other. The first single-sided grinding tooth (12) and the second single-sided grinding tooth (13) achieve single-sided grinding structure by reducing the angle between the suspended surface and the vertical surface or by raising the middle diameter. The axial distance between the two is at least twice the tooth pitch of the workpiece (01) to be ground, so as to realize skip tooth processing.

10. A split-type internally cooled dental grinding device according to claim 7, characterized in that, The solid-liquid phase change material is either a paraffin-based organic phase change material or a graphite-based composite phase change material; Alternatively, the drive unit (02) may be a gear transmission system.

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