Novel liquid cooling molar device
By adopting a rotary sealing structure consisting of an integrated liquid-cooled shaft and a fixed shell in the gear grinding equipment, an internal circulation liquid cooling path is formed, which solves the problems of low processing accuracy and equipment complexity caused by improper coolant spraying, and achieves efficient and rapid cooling and cost control.
Patent Information
- Application Number
- CN202520176065.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-27
AI Technical Summary
Improper coolant spraying during high-temperature grinding in existing dental grinding equipment affects machining accuracy, increases human error, and results in complex equipment structure and high cost.
It adopts a rotary sealing structure consisting of an integrated liquid-cooled shaft and a fixed shell to form an internal circulating liquid-cooling passage. Combined with a small amount of external coolant for heat dissipation, it achieves continuous rotational liquid supply through the pairing of the annular groove and the rotating shaft, and uses three sealing rings for effective isolation and sealing.
It achieves efficient and rapid cooling, improves processing accuracy, reduces human error, simplifies equipment structure, reduces costs, prevents liquid spillage, and improves yield.
Smart Images
Figure CN223719066U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of machining, especially to a novel liquid-cooled tooth grinding device. BACKGROUND
[0002] Machine cutting tools are an important part of machining equipment. When machine cutting tools (such as taps) are produced, tooth grinding equipment is needed to grind tooth mountains. When the tooth grinding wheel rotates to grind the blank, hard cutting between metals will generate a large amount of heat. Usually, an external cooling mode using a cooling liquid is adopted. Especially when single-sided tooth jumping is processed, the grinding speed is further improved, and more heat needs to be quickly dissipated. A large amount of cooling liquid is needed for heat dissipation. The defects are as follows: first, a large amount of liquid is sprayed to the friction wheel, which also enters the workpiece grinding surface, making it inconvenient for the operator to observe the real-time working condition and unable to timely adjust the operation process, affecting the machining precision; second, there are human error factors, which can easily damage the tooth grinding wheel, increase the probability of workpiece quality defects, reduce the yield, and increase the product cost; third, a large-flux liquid spraying structure and a liquid recovery structure are needed, which makes the structure complex, increases the equipment size, and increases the cost. SUMMARY
[0003] To solve one or more of the above problems, the utility model provides a novel liquid-cooled tooth grinding device.
[0004] According to one aspect of the utility model, the novel liquid-cooled tooth grinding device comprises a liquid-cooled grinding wheel, a liquid-cooled shaft, a fixed shell, a bearing, and a sealing ring.
[0005] The liquid-cooled grinding wheel is provided with a transverse shaft hole in the middle and at least one vertical annular cooling ring groove near the circumferential outer wall. In each vertical cross-section of the cooling ring groove, the liquid-cooled grinding wheel is symmetrically provided with a radial liquid inlet hole and a radial liquid outlet hole, one end of which communicates with the transverse shaft hole and the other end of which communicates with both ends of the cooling ring groove.
[0006] One end of the liquid-cooled shaft is connected to the transverse shaft hole through an interference shaft sleeve, and the other end is connected to a driving part. The liquid-cooled shaft is provided with an axially closed axial liquid inlet hole and an axial liquid outlet hole. The inner ends of the axial liquid inlet hole and the axial liquid outlet hole are respectively connected to the radial liquid inlet hole and the radial liquid outlet hole through radial transfer holes. The outer ends of the axial liquid inlet hole and the axial liquid outlet hole are respectively provided with radial liquid inlet transfer holes and liquid outlet transfer holes. The liquid inlet transfer hole is located on the left side of the liquid outlet transfer hole.
[0007] The bearing holes at both ends of the fixed shell are connected to the liquid cooling shaft through bearings, and the middle cavity is coaxially sleeved with the liquid cooling shaft, the vertical liquid inlet hole at the left end of the cavity wall of the middle cavity is integrally connected with the first inner ring groove, and the vertical liquid return hole at the right end of the cavity wall of the middle cavity is integrally connected with the second inner ring groove, the first inner ring groove is opposite to the liquid inlet adapter hole, and the second inner ring groove is opposite to the liquid outlet adapter hole, the left side of the first inner ring groove, the right side of the second inner ring groove and the space between the two ring grooves are elastically sealed by the sealing ring to connect the middle cavity and the liquid cooling shaft, and the vertical liquid inlet hole and the vertical liquid return hole are connected with the liquid inlet pipe and the liquid return pipe of the liquid supply part to form a liquid cooling circulation channel.
[0008] The novel liquid cooling tooth grinding device has a rotary sealing structure composed of an integrated liquid cooling shaft and a fixed shell, then forms an internal circulation liquid cooling channel with the liquid cooling grinding wheel, and the integrated liquid cooling shaft is both a driving shaft for rotary grinding and an inner liquid passage shaft for the rotary sealing element, and only one fixed shell is needed at the outer end to fix the liquid inlet and outlet, so that the structure is simple, rapid cooling can be achieved, and the structure is suitable for high-temperature dry grinding scenes; a small amount of external cooling liquid can also be combined for heat dissipation to effectively achieve rapid cooling, and the beneficial effects are as follows: first, the structure is an internal circulation liquid cooling structure, a large amount of liquid does not enter the machining area, the operator can easily observe and adjust, good machining precision can be obtained, human error is avoided, the machining equipment is protected, the product yield is high, and the comprehensive cost of the product is reduced; second, the liquid cooling structure is simple, the liquid cooling shaft is the rotating shaft of the rotary sealing structure, the number of parts is reduced, the size of the equipment is reduced, the cost is effectively controlled, the structure is easy to install and maintain, and management is convenient; third, the structure is effectively isolated and sealed by three sealing rings to prevent liquid overflow; fourth, the double-end bearing is arranged for fixation, and good positioning effect and rotation precision are achieved; and fifth, the ring groove and the through hole of the rotating shaft are arranged in pairs to realize continuous rotary liquid supply.
[0009] In some embodiments, the liquid inlet adapter hole is integrally connected with a third outer ring groove at the outer end, the liquid outlet adapter hole is integrally connected with a fourth outer ring groove at the outer end, the third outer ring groove is opposite to the first inner ring groove, and the second inner ring groove is opposite to the fourth outer ring groove.
[0010] In some embodiments, the liquid cooling grinding wheel is provided with a plurality of cooling ring grooves arranged at equal intervals in the axial direction; in the vertical cross section of each cooling ring groove, the radially arranged liquid inlet hole and the radially arranged liquid outlet hole are located at the same diameter at both ends, and the radially arranged liquid inlet hole, the radially arranged liquid outlet hole and the semicircular groove at both ends of the cooling ring groove form two parallel cooling branches.
[0011] In some embodiments, two flow guide partitions are symmetrically arranged in the cooling ring groove, one of the flow guide partitions is opposite to the radially arranged liquid inlet hole, and the other flow guide partition is opposite to the radially arranged liquid outlet hole.
[0012] In some embodiments, end face elastic sealing elements are arranged at the connection ends of the liquid inlet adapter hole, the radially arranged liquid inlet hole and the radially arranged liquid outlet hole.
[0013] In some embodiments, two rubber cover plates are threadably detachably connected to the two sides of the fixed shell, the rubber cover plate on the inner side has a central hinge hole that rotates to fit the outer circumferential wall of the liquid-cooled shaft; the rubber cover plate on the outer side is provided with a positioning ring at the front end, and the positioning ring fits the liquid-cooled shaft.
[0014] In some embodiments, two bearings are installed side by side in the bearing hole, a spacer is arranged between the two bearings, the inner ring of the bearing on the outer side is positioned to fit the first shaft shoulder of the liquid-cooled shaft, and the outer ring of the bearing is positioned to fit the hole collar, the hole collar is arranged in the outer clamping groove of the bearing hole, the inner ring of the bearing on the inner side is positioned to fit the shaft stop ring, and the outer ring of the bearing is positioned to fit the second protruding shoulder of the bearing hole, and the shaft stop ring is arranged in the inner clamping groove of the liquid-cooled shaft.
[0015] In some embodiments, the fixed shell is threadably detachably connected to the machine frame or the connecting plate of the machine frame,
[0016] or the driving part is a gear transmission system, and the inner end of the driving part is fixedly connected to the fixed machine frame.
[0017] In some embodiments, the liquid supply part includes a liquid storage tank in which a hydraulic pump is installed, the liquid return port of the liquid storage tank is connected to a liquid return pipe, and the liquid outlet of the hydraulic pump is connected to a liquid inlet pipe.
[0018] In some embodiments, the liquid-cooled grinding wheel includes a cylindrical wheel body, the outer circumferential wall of the wheel body is provided with a first single-sided grinding tooth and a second single-sided grinding tooth connected to each other, the first single-sided grinding tooth and the second single-sided grinding tooth realize a single-sided grinding structure by reducing the included angle between the overhanging surface and the vertical surface or by lifting the center diameter, and the axial distance between the two is at least twice the pitch of the workpiece to be ground, so that the grinding starting point of the left tooth mountain is always earlier than that of the right tooth mountain. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application;
[0020] Figure 2 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application; Figure 1 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application;
[0021] Figure 3 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application; Figure 2 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application;
[0022] Figure 4 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application; Figure 2 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application;
[0023] Figure 5 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application; Figure 2 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application;
[0024] Figure 6 It is a schematic view of a novel liquid-cooled tooth grinding device according to an embodiment of the present application;Figure 1 A partial enlarged view of the new liquid-cooled grinding device shown in the figure (II) ;
[0025] Figure 7 A partial enlarged view of the new liquid-cooled grinding device shown in the figure (II) ; Figure 2 A cross-sectional view of the liquid-cooled grinding wheel shown in the figure;
[0026] Figure 8 A partial enlarged view of the liquid-cooled grinding wheel shown in the figure; Figure 7 A partial enlarged view of the liquid-cooled grinding wheel shown in the figure;
[0027] The liquid-cooled grinding wheel 1, the wheel body 10, the transverse shaft hole 101, the cooling ring groove 102, the radial liquid inlet hole 103, the radial liquid outlet hole 104, the flow guide partition plate 105, the flange 11, the first single-face grinding tooth 12, the right grinding surface 120, the left suspended surface 121, the second single-face grinding tooth 13, the left grinding surface 130, the right suspended surface 131, and the rough grinding tooth 14.
[0028] The liquid-cooled shaft 2, the axial liquid inlet hole 21, the axial liquid outlet hole 22, the transfer adapter hole 23, the liquid inlet adapter hole 24, the liquid outlet adapter hole 25, the third outer ring groove 26, the fourth outer ring groove 27, and the first shaft shoulder 28.
[0029] The fixed shell 3, the intermediate cavity 30, the bearing hole 31, the vertical liquid inlet hole 32, the vertical liquid return hole 33, the first inner ring groove 34, the second inner ring groove 35, and the second flange 36.
[0030] The bearing 4, the sealing ring 5, the spacer sleeve 6, the hole clamping ring 7, the rubber cover plate 8, the center hinge hole 80, and the positioning ring 81.
[0031] The workpiece to be ground 01, the liquid supply part 02, the liquid inlet pipe 021, and the liquid return pipe 022.
[0032] The machine frame 03 and the driving part 04. DETAILED DESCRIPTION
[0033] The present utility model will be further described in detail below in combination with the drawings. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component.
[0034] Figures 1 to 8 A new liquid-cooled grinding device according to an embodiment of the present utility model is schematically shown. As shown in the figure, the new liquid-cooled grinding device comprises a liquid-cooled grinding wheel 1, a liquid-cooled shaft 2, a fixed shell 3, a bearing 4, and a sealing ring 5.
[0035] The liquid-cooled grinding wheel 1 is provided with a transverse shaft hole 101 in the middle, at least one vertical annular cooling ring groove 102 is arranged near the circumferential outer wall, in the vertical section where each cooling ring groove 102 is located, the liquid-cooled grinding wheel 1 is symmetrically provided with a radial liquid inlet hole 103 and a radial liquid outlet hole 104, one end of which communicates with the transverse shaft hole 101 and the other end of which communicates with the two ends of the cooling ring groove 102;
[0036] The liquid-cooled shaft 2 is connected to the transverse shaft hole 101 through an interference shaft sleeve at one end and is connected to the driving part 04 at the other end, the liquid-cooled shaft 2 is provided with an axially closed axial liquid inlet hole 21 and an axial liquid outlet hole 22, the inner ends of the axial liquid inlet hole 21 and the axial liquid outlet hole 22 are respectively connected to the radial liquid inlet hole 103 and the radial liquid outlet hole 104 through the radial transfer hole 23, the outer ends of the axial liquid inlet hole 21 and the axial liquid outlet hole 22 are respectively provided with a radial liquid inlet transfer hole 24 and a liquid outlet transfer hole 25, and the liquid inlet transfer hole 24 is located on the left side of the liquid outlet transfer hole 25;
[0037] The bearing hole 31 at both ends of the fixed shell 3 is connected to the outer end of the liquid-cooled shaft 2 through the bearing 4 and is coaxially sleeved with the liquid-cooled shaft 2 in the middle cavity 30, the vertical liquid inlet hole 32 is arranged at the left end of the cavity wall of the middle cavity 30 and the vertical liquid return hole 33 is arranged at the right end of the cavity wall, the inner end of the vertical liquid inlet hole 32 is integrally connected to the first inner ring groove 34 and the inner end of the vertical liquid return hole 33 is integrally connected to the second inner ring groove 35, the first inner ring groove 34 is opposite to the liquid inlet transfer hole 24 and the second inner ring groove 35 is opposite to the liquid outlet transfer hole 25, the left side of the first inner ring groove 34, the right side of the second inner ring groove 35 and the space between the two ring grooves are elastically sealed and connected to the middle cavity 30 and the liquid-cooled shaft 2 through the sealing ring 5, the vertical liquid inlet hole 32 and the vertical liquid return hole 33 are connected to the liquid inlet pipe 021 and the liquid return pipe 022 of the liquid supply part 02 to form a liquid cooling circulation channel.
[0038] The new liquid-cooled tooth grinding device has a rotary sealing structure composed of an integrated liquid-cooled shaft 2 and a fixed shell 2, and then forms an internal circulation liquid cooling path with the liquid-cooled grinding wheel 1, and the integrated liquid-cooled shaft 2 is both the driving shaft of rotary grinding and the inner liquid pipe shaft of the rotary sealing element, and only one fixed shell 3 is needed at the outer end to realize the fixation of the inlet and outlet liquid, so that the structure is simple, and the cooling can be quickly realized, which is suitable for high-temperature dry grinding scene; A small amount of external cooling liquid can also be combined for heat dissipation, effectively realizing rapid cooling, and the beneficial effects are: first, the structure is an internal circulation liquid cooling structure, a large amount of liquid does not enter the machining area, the operator can easily observe and adjust, and good machining precision can be obtained, while avoiding human error factors, protecting the machining equipment, and the product yield is high, reducing the comprehensive cost of the product; second, the liquid cooling structure is simple, the liquid-cooled shaft 2 is the rotating shaft of the rotary sealing structure, reducing the number of parts, reducing the size of the equipment, effectively controlling the cost, and the structure is easy to install and maintain; third, the structure uses three sealing rings 5 for effective isolation and sealing to prevent liquid overflow; fourth, the double-end bearing is arranged for fixation, which has good positioning effect and rotation accuracy; fifth, the ring groove and the through hole of the rotating shaft are matched to realize continuous liquid supply.
[0039] Further, the slot width of the first inner ring groove 34 is smaller than the diameter of the vertical liquid inlet hole 32 and larger than the diameter of the liquid inlet adapter hole 24; the slot width of the second inner ring groove 35 is smaller than the diameter of the vertical liquid return hole 33 and larger than the diameter of the liquid return adapter hole 24. The beneficial effects are: the structure can ensure the continuity and stability of liquid delivery without turbulence.
[0040] Further, the liquid inlet adapter hole 24 is integrally connected to the third outer ring groove 26 at the outer end, the liquid outlet adapter hole 25 is integrally connected to the fourth outer ring groove 27 at the outer end, the third outer ring groove 26 is opposite to the first inner ring groove 34 and the second inner ring groove 35 is opposite to the fourth outer ring groove 27; or the width of the third outer ring groove 26 is greater than the diameter of the liquid inlet adapter hole 24 and smaller than the diameter of the first inner ring groove 34, and the width of the fourth outer ring groove 27 is greater than the diameter of the liquid outlet adapter hole 24 and smaller than the diameter of the second inner ring groove 35. The beneficial effects are: the setting further improves the stability of liquid delivery.
[0041] Further, the liquid-cooled grinding wheel 1 is provided with a plurality of cooling ring grooves 102 arranged at equal intervals in the axial direction;
[0042] In the vertical section where each cooling ring groove 102 is located, the radially-inward liquid inlet hole 103 and the radially-outward liquid outlet hole 104 are symmetrically arranged at the two ends of the same diameter, and the radially-inward liquid inlet hole 103, the radially-outward liquid outlet hole 104 and the semicircular groove at the two ends of the cooling ring groove 102 form two parallel cooling branches. Preferably, two flow guide partitions 105 are symmetrically arranged in the cooling ring groove 102, one of which is directly opposite the radially-inward liquid inlet hole 103 and the other of which is directly opposite the radially-outward liquid outlet hole 104. The beneficial effect of this arrangement is that it can uniformly dissipate heat from the liquid-cooled grinding wheel 1, making the overall temperature strain more uniform and the machining precision higher.
[0043] Further, the connection end of the transfer hole 23 and the radially-inward liquid inlet hole 103 and the radially-outward liquid outlet hole 104 are each provided with an end face elastic sealing element. The beneficial effect of this arrangement is that it provides high sealing performance for liquid delivery.
[0044] Further, two rubber cover plates 8 are threadedly detachably connected to the two sides of the fixed shell 3, the inner rubber cover plate 8 has a central hinge hole 80 that is rotationally attached to the outer peripheral wall of the liquid-cooled shaft 2.
[0045] The outer rubber cover plate 8 is provided with a positioning ring 81 at the front end, which is attached to the liquid-cooled shaft 2. The beneficial effect of this arrangement is that the rubber cover plate 8 has good elastic sealing performance, preventing liquid overflow and the entry of other impurities.
[0046] Further, two bearings 4 are installed side by side in the bearing hole 31, and a spacer 6 is arranged between the two bearings 4. The inner ring of the outer bearing 4 is positioned and attached to the first shaft shoulder 28 of the liquid-cooled shaft 2, and the outer ring is positioned and attached to the hole collar 7. The hole collar 7 is arranged in the outer clamping groove of the bearing hole 31. The inner ring of the inner bearing 4 is positioned and attached to the shaft stop ring 9, and the outer ring is positioned and attached to the second protruding shoulder 36 of the bearing hole 31. The shaft stop ring 9 is arranged in the inner clamping groove of the liquid-cooled shaft 2. The beneficial effect of this arrangement is that it has good rotation performance and achieves better rotation sealing function.
[0047] Preferably, the fixed shell 3 is threadedly detachably connected to the machine frame 03 or the connecting plate of the machine frame 03. The beneficial effect of this arrangement is that it has a simple structure and good stability.
[0048] Preferably, the driving part 04 is a gear transmission system, and the inner end of the driving part 04 is fixedly connected to the fixed machine frame 03. The beneficial effect of this arrangement is that it can achieve high-precision rotation power.
[0049] Preferably, the liquid supply part 02 includes a liquid storage tank with a hydraulic pump, the return liquid port of the liquid storage tank is connected to the return liquid pipe 022, and the outlet of the hydraulic pump is connected to the liquid inlet pipe 021. The beneficial effect of this arrangement is that it can achieve good liquid circulation cooling function.
[0050] Further, the liquid-cooled grinding wheel 1 comprises a cylindrical wheel body 10, the wheel body 10 is integrally and symmetrically provided with flanges 11 at both ends, the two flanges 11 are preferably provided with cooling ring grooves 102, the outer peripheral wall of the wheel body 10 is provided with first single-sided tooth 12 and second single-sided tooth 13 connected with each other, the first single-sided tooth 12 and the second single-sided tooth 13 realize single-sided grinding structure by reducing the included angle of the overhanging surface and the vertical surface or by lifting the center diameter, the axial spacing of the two is at least twice the pitch of the workpiece 01, so that the grinding start point of the left tooth mountain is always earlier than that of the right tooth mountain.
[0051] As shown in Figure 8 the left overhanging surface 121 of the first single-sided tooth 12 and the right overhanging surface 131 of the second single-sided tooth 13 do not contact the workpiece 01, the right grinding surface 120 of the first single-sided tooth 12 and the left grinding surface 130 of the second single-sided tooth 13 are integrally connected, the axial spacing of the two is at least twice the pitch of the workpiece 01, the right grinding surface 120 processes the left tooth mountain of the front tooth of the workpiece 01, and the left grinding surface 130 skips at least one tooth to process the right tooth mountain of the rear tooth of the workpiece 01, so that the grinding start point of the left tooth mountain is always earlier than that of the right tooth mountain. Its beneficial effects are: first, the first single-sided tooth 12 and the second single-sided tooth 13 are independent of each other and have no fixed pitch, can grind workpieces 01 of various pitches, have strong versatility, and the two teeth can be processed at the same time, so the grinding efficiency is high; second, the function of the first single-sided tooth 12 and the second single-sided tooth 13 skipping teeth makes the grinding start point of the left tooth mountain always earlier than that of the right tooth mountain, within a certain width, it can process the left tooth mountain of the workpiece 01 to have a cylindrical blade, while the right tooth mountain has no cylindrical blade, the workpiece 01 can withstand higher cutting load, the service life is greatly improved, not only can be used for ordinary machining, but also can be used for special tool machining, and the application range is improved.
[0052] Among them, the mode of reducing the included angle of the overhanging surface and the vertical surface is that the included angle between the right grinding surface 120 of the first single-sided tooth 12 and the vertical surface is equal to the half angle of the tooth profile of the workpiece 01, and the included angle between the left overhanging surface 121 and the vertical surface is less than the half angle of the tooth profile of the workpiece 01, thereby forming a single-sided tooth with right tooth surface grinding and left tooth surface overhanging; the included angle between the left grinding surface 130 of the second single-sided tooth 13 and the vertical surface is equal to the half angle of the tooth profile of the workpiece 01, and the included angle between the right overhanging surface 131 and the vertical surface is less than the half angle of the tooth profile of the workpiece 01, thereby forming a single-sided tooth with left tooth surface grinding and right tooth surface overhanging.
[0053] The mode of lifting the center diameter is that the center diameter of the first single-sided tooth 12 and the second single-sided tooth 13 is higher than the center diameter of the workpiece 01, thereby forming a single-sided tooth with one side in contact and the other side overhanging.
[0054] Preferably, the first single-sided gear grinding tooth 12 is also provided with a plurality of rough grinding teeth 14 at the left end, which has the beneficial effect that: by providing the rough grinding teeth 14, a larger grinding depth can be used to quickly remove most of the excess amount of the part surface, and a very small grinding depth is used for fine grinding to ensure the fine processing and high smoothness of the part surface, and the grinding wheel can complete the trimming work of the part to be ground 01 at one time, which ensures the machining speed and the grinding accuracy.
[0055] Preferably, the grinding wheel 1 is a grinding roller or a grinding wheel, and the part to be ground 01 is a spiral tap. Its beneficial effect is that this selection has good grinding function and application range.
[0056] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.
Claims
1. A new liquid cooled tooth grinding device, characterized in that, It includes: Liquid cooling grinding wheel (1), liquid cooling shaft (2), fixed shell (3), bearing (4) and sealing ring (5); The liquid cooling grinding wheel (1) is provided with a transverse shaft hole (101) in the middle, at least one vertical circular cooling ring groove (102) is arranged near the circumferential outer wall, in the vertical section of each cooling ring groove (102), the liquid cooling grinding wheel (1) is provided with a radial liquid inlet hole (103) and a radial liquid outlet hole (104) which are symmetrically arranged and one end of which is communicated with the transverse shaft hole (101) and the other end of which is communicated with the two ends of the cooling ring groove (102). The liquid cooling shaft (2) is connected with the transverse shaft hole (101) through interference shaft sleeve at one end and is connected with the driving part (04) at the other end, the liquid cooling shaft (2) is provided with an axial liquid inlet hole (21) and an axial liquid outlet hole (22) which are closed at both ends, the axial liquid inlet hole (21) and the axial liquid outlet hole (22) are communicated with the radial liquid inlet hole (103) and the radial liquid outlet hole (104) through the radial transfer holes (23) at the inner ends respectively, the outer ends of the axial liquid inlet hole (21) and the axial liquid outlet hole (22) are respectively provided with radial liquid inlet transfer holes (24) and liquid outlet transfer holes (25), and the liquid inlet transfer holes (24) are located on the left side of the liquid outlet transfer holes (25). The bearing holes (31) at both ends of the fixed shell (3) are connected with the outer ends of the liquid cooling shaft (2) through the bearing (4), the middle cavity (30) is fitted around the liquid cooling shaft (2), the vertical liquid inlet hole (32) at the left end of the cavity wall of the middle cavity (30) is integrally communicated with the first inner ring groove (34), and the vertical liquid return hole (33) at the right end of the cavity wall is integrally communicated with the second inner ring groove (35), the first inner ring groove (34) is opposite to the liquid inlet transfer hole (24), the second inner ring groove (35) is opposite to the liquid outlet transfer hole (25), the left side of the first inner ring groove (34), the right side of the second inner ring groove (35) and the two ring grooves are elastically sealed and connected with the middle cavity (30) and the liquid cooling shaft (2) through the sealing ring (5), the vertical liquid inlet hole (32) and the vertical liquid return hole (33) are communicated with the liquid inlet pipe (021) and the liquid return pipe (022) of the liquid supply part (02), forming a liquid cooling circulation channel.
2. The novel liquid cold tooth grinding device according to claim 1, characterized in that, The outer end of the liquid inlet transfer hole (24) is integrally communicated with the third outer ring groove (26), the outer end of the liquid outlet transfer hole (25) is integrally communicated with the fourth outer ring groove (27), the third outer ring groove (26) is opposite to the first inner ring groove (34), and the second inner ring groove (35) is opposite to the fourth outer ring groove (27).
3. The novel liquid cold tooth grinding device according to claim 1, characterized in that, The liquid cooling grinding wheel (1) is provided with a plurality of cooling ring grooves (102) which are axially equidistantly arranged; in the vertical section of each cooling ring groove (102), the symmetrically arranged radial liquid inlet hole (103) and the radial liquid outlet hole (104) are located at the same diameter at both ends, and the radial liquid inlet hole (103), the radial liquid outlet hole (104) and the semicircular groove at both ends of the cooling ring groove (102) form two parallel cooling branches.
4. The novel liquid-cooled tooth grinding device according to claim 3, characterized in that, Two flow guide partitions (105) are symmetrically arranged in the cooling ring groove (102), one flow guide partition (105) is opposite to the radial liquid inlet hole (103), and the other flow guide partition (105) is opposite to the radial liquid outlet hole (104).
5. The novel liquid cold tooth grinding device according to claim 1, characterized in that, The connecting end of the transfer hole (23) and the radial liquid inlet hole (103) and the radial liquid outlet hole (104) is provided with an end face elastic sealing element.
6. The novel liquid cold tooth grinding device according to claim 1, characterized in that, Two rubber cover plates (8) are threadedly detachably connected to the two sides of the fixed shell (3), the inner rubber cover plate (8) has a central hinge hole (80) which is rotationally attached to the outer peripheral wall of the liquid cooling shaft (2); the outer rubber cover plate (8) is provided with a positioning ring (81) at the front end, and the positioning ring (81) is attached to the liquid cooling shaft (2).
7. The novel liquid cold tooth grinding device according to any one of claims 1 to 6, characterized in that, Two bearings (4) are installed side by side in the bearing hole (31), and a spacer (6) is arranged between the two bearings (4), the inner ring of the outer bearing (4) is positioned and attached to the first shaft shoulder (28) of the liquid cooling shaft (2), and the outer ring is positioned and attached to the hole clamping ring (7), the hole clamping ring (7) is arranged in the outer clamping groove of the bearing hole (31), the inner ring of the inner bearing (4) is positioned and attached to the shaft blocking ring (9), and the outer ring is positioned and attached to the second protruding shoulder (36) of the bearing hole (31), the shaft blocking ring (9) is arranged in the inner clamping groove of the liquid cooling shaft (2).
8. The novel liquid-cooled tooth grinding device according to claim 7, characterized in that The fixed shell (3) is threadedly detachably connected to the rack (03) or the connecting plate of the rack (03), Or the driving part (04) is a gear transmission system, and the inner end of the driving part (04) is fixedly connected to the fixed rack (03).
9. The novel liquid cold tooth grinding device according to claim 1, characterized in that, The liquid supply part (02) includes a liquid storage tank provided with a hydraulic pump, the liquid return port of the liquid storage tank is communicated with the liquid return pipe (022), and the liquid outlet of the hydraulic pump is communicated with the liquid inlet pipe (021).
10. The novel liquid-cooled tooth grinding device according to claim 7, characterized in that, The liquid cooling grinding wheel (1) comprises a cylindrical wheel body (10), the outer peripheral wall of the wheel body (10) is provided with a first single-sided grinding tooth (12) and a second single-sided grinding tooth (13) connected to each other, the first single-sided grinding tooth (12) and the second single-sided grinding tooth (13) realize a single-sided grinding structure by reducing the included angle between the overhanging surface and the vertical surface or by lifting the center diameter, the axial distance between the two is at least twice the pitch of the workpiece (01), so that the left tooth mountain always starts grinding earlier than the right tooth mountain.