Phase-change cooling uniform-temperature molar module

Abstract

The utility model discloses a molar module capable of realizing phase change cooling and temperature equalization. The tooth grinding module comprises a tooth grinding wheel, a solid-liquid phase change part and a rotating shaft, the tooth grinding wheel comprises a cylindrical wheel body and an annular grinding body, the grinding body is integrally formed on the peripheral wall of the wheel body, and a central shaft hole of the wheel body fixedly sleeves the outer end of the rotating shaft; the inner walls of the two circular ring cavities at the left end and the right end in the grinding body are communicated through a plurality of transverse uniform-temperature connecting holes in a circumferential array; the solid-liquid phase change part is any one of an inorganic phase change material, an organic phase change material and a composite phase change material, the annular cavity is filled with the solid-liquid phase change part, and through melting heat absorption and solidification heat dissipation of the solid-liquid phase change part, the temperature of the tooth grinding wheel is maintained at a proper working temperature for stable and efficient grinding. The LED lamp has the advantages of being simple in structure, good in heat dissipation effect and high in machining efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machine tool manufacturing, and in particular to a gear grinding module with phase change cooling and uniform temperature. Background Technology

[0002] Machine cutting tools are an important component of machining equipment. During the production of machine cutting tools (such as taps), it is necessary to grind the teeth using a grinding machine. When the grinding wheel rotates and grinds the blank, the hard cutting between metals generates a lot of heat. Especially in single-sided skip-tooth machining, the grinding speed is further increased, and even more heat needs to be dissipated quickly. In some grinding machines, coolant is sprayed during grinding to cool the surface. However, this method has the following drawbacks: it requires a spraying structure and a liquid recovery structure, which are complex and increase the size and cost of the equipment. At the same time, the sprayed coolant can also enter the grinding surface of the workpiece, making it inconvenient for the operator to observe the real-time working condition and adjust the operation process in a timely manner, thus affecting the machining accuracy. In other dry grinding equipment, the equipment lacks a dedicated heat dissipation device. The operator stops the grinding operation based on their experience and by observing the condition of the grinding wheel or the surface quality of the workpiece. During the stoppage, heat is dissipated by air cooling or by flushing with coolant. The disadvantages are: firstly, human error can easily damage the grinding wheel, and the probability of workpiece quality defects increases, reducing the yield and increasing product costs; secondly, frequent stops reduce the operation 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 phase-change cooling uniform temperature grinding module.

[0004] According to one aspect of the present invention, a phase change cooling uniform temperature grinding module includes: a grinding wheel, a solid-liquid phase change part, and a rotating shaft;

[0005] The grinding wheel includes a cylindrical wheel body and an annular grinding body. The grinding body is integrally formed and set on the outer peripheral wall of the wheel body. The central shaft hole of the wheel body is fixedly sleeved to the outer end of the rotating shaft, and the inner end of the rotating shaft is connected to the drive unit.

[0006] The grinding body has two vertical annular cavities symmetrically arranged at the left and right ends. The inner walls of the two annular cavities are connected by several transverse temperature equalization holes arranged in a circular array. The outer wall of the grinding body has a filling hole that connects to the annular cavities.

[0007] The solid-liquid phase change section can be any one of inorganic phase change material, organic phase change material, or composite phase change material, and it fills the annular cavity.

[0008] When the local temperature of the grinding body is too high during continuous operation, the solid-liquid phase change part in the two annular cavities can melt simultaneously and absorb a large amount of heat quickly and effectively due to the conduction effect of the temperature equalization hole. When the machine stops, it solidifies and conducts heat to the outside for recycling, thereby maintaining the temperature of the grinding wheel at a suitable working temperature for stable and efficient grinding.

[0009] This phase-change cooling and temperature-uniform grinding module stores a solid-liquid phase-change section within an annular cavity. During the phase change, this section absorbs a significant amount of heat, extending the grinding time with stable temperatures. During workpiece replacement intervals, the section quickly releases heat and returns to its original state, allowing for cyclical operation. The inclusion of temperature-uniform connecting holes ensures uniform temperature across the entire grinding wheel, eliminating localized overheating. Its advantages include: First, the simple structure provides excellent heat dissipation without requiring structural modifications, effectively reducing equipment costs and facilitating observation during grinding, thus achieving high machining accuracy. Second, the excellent heat dissipation reduces human error, effectively protecting tools and workpieces and improving product quality. Third, it eliminates frequent interruptions, increasing operating time and processing efficiency, making it suitable for large-scale continuous production. Fourth, the temperature-uniform connecting holes ensure uniform temperature across the entire structure, improving overall heat dissipation efficiency.

[0010] In some embodiments, when the solid-liquid phase change part is an inorganic phase change material, it is a molten salt or a hydrated salt.

[0011] In some embodiments, when the solid-liquid phase change part is an organic phase change material, the organic phase change material is paraffin.

[0012] In some embodiments, when the solid-liquid phase change part is a composite phase change material, it is any one of graphite-based, graphene-based, and carbon fiber-based phase change materials.

[0013] In some implementations, a one-way valve is installed on the filling port to provide outward pressure control of the filling nozzle.

[0014] In some embodiments, the outer wall of the annular cavity is close to the outer peripheral wall of the grinding body, and the inner wall of the annular cavity is located outside the grinding teeth on the left and right sides of the grinding body.

[0015] In some embodiments, the vertical distance between the outer wall of the annular cavity and the outer peripheral wall of the grinding body is 2-10 mm, and the lateral distance between the inner wall of the annular cavity and the grinding teeth on the left and right sides is 0-5 mm.

[0016] In some embodiments, the central shaft hole of the wheel body and the shaft are connected by a key, and the two end faces of the wheel body, the locking disc, and the outer end ring of the shaft are positioned and detachably fixedly connected by a first threaded component;

[0017] The drive unit is a gear transmission system.

[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, so that the grinding start point of the left tooth hill is always earlier than that of the right tooth hill.

[0019] In some embodiments, the left end of the first single-sided grinding tooth is also provided with several coarse grinding teeth;

[0020] Grinding wheels are either grinding rollers or grinding wheels;

[0021] The workpiece to be ground is a spiral tap. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of a phase change cooling uniform temperature grinding module according to one embodiment of the present invention.

[0023] Figure 2 for Figure 1 A partially enlarged schematic diagram (I) of a phase change cooling uniform temperature molar module is shown.

[0024] Figure 3 for Figure 1 A partially enlarged schematic diagram (II) of a phase change cooling uniform temperature molar module is shown.

[0025] Figure 4 for Figure 1 The diagram shows a front view of a phase change cooling uniform temperature molar module.

[0026] Figure 5 for Figure 4 A cross-sectional schematic diagram of a phase change cooling uniform temperature molar module is shown.

[0027] Grinding wheel 1, wheel body 10, central shaft hole 100, grinding body 11, 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, annular cavity 14, temperature equalization connecting hole 15, filling hole 16, coarse grinding tooth 17;

[0028] Drive unit 2;

[0029] Solid-liquid phase transition section 3;

[0030] 4. Rotating shaft; 41. Outer end ring; 5. Filling nozzle; 6. Key bar; 7. First threaded part; 8. Locking disc;

[0031] Part 01 to be ground. Detailed Implementation

[0032] 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.

[0033] Figures 1 to 5 A phase change cooling uniform temperature grinding module according to one embodiment of the present invention is schematically shown. As shown in the figure, the phase change cooling uniform temperature grinding module includes: a grinding wheel 1, a solid-liquid phase change part 3, and a rotating shaft 4;

[0034] The grinding wheel 1 includes a cylindrical wheel body 10 and an annular grinding body 11. The grinding body 11 is integrally formed on the outer peripheral wall of the wheel body 10, and the central shaft hole 100 of the wheel body 10 is fixedly sleeved to the outer end of the rotating shaft 4.

[0035] The grinding body 11 has two vertical annular cavities 14 symmetrically arranged at its left and right ends. The inner walls of the two annular cavities 14 are connected by a number of circumferentially arrayed transverse temperature equalization connecting holes 15. The outer wall of the grinding body 11 has a filling hole 16 that connects to the annular cavities 14. Preferably, a filling nozzle 5 with an outward pressure conduction and one-way valve is installed on the filling hole 16.

[0036] The solid-liquid phase change section 3 is any one of inorganic phase change material, organic phase change material, and composite phase change material, and the solid-liquid phase change section 3 is filled in the annular cavity 14.

[0037] When the local temperature of the grinding body 11 is too high during continuous operation, due to the conduction effect of the temperature equalization connecting hole 15, the solid-liquid phase change part 3 in the two annular cavities 14 can melt simultaneously and quickly and effectively absorb a large amount of heat. When the machine stops, it solidifies and conducts heat to the outside for recycling, thereby maintaining the temperature of the grinding wheel 1 at a suitable working temperature for stable and efficient grinding.

[0038] This phase-change cooling and temperature-uniform grinding module stores a solid-liquid phase-change section 3 within an annular cavity 14. During phase changes, the solid-liquid phase-change section 3 absorbs a large amount of heat, extending the grinding time with stable temperature. During workpiece replacement intervals, the solid-liquid phase-change section 3 quickly releases heat and returns to its original state, allowing for cyclical operation. Simultaneously, the temperature-uniformity connecting holes 15 ensure uniform temperature across the entire grinding wheel 1, eliminating localized high temperatures. Its advantages are: firstly, the structure is simple and has excellent heat dissipation, requiring no changes to the equipment structure, effectively reducing equipment costs, and facilitating observation during grinding, making it easy to achieve good machining accuracy; secondly, the excellent heat dissipation reduces human error, effectively protecting tools and workpieces, and improving product quality; thirdly, it eliminates the need for frequent interruptions, increasing operating time and processing efficiency, making it suitable for large-scale continuous production; and fourthly, the temperature-uniformity connecting holes 15 ensure that the entire structure experiences temperature changes, improving overall heat dissipation efficiency.

[0039] Furthermore, when the solid-liquid phase change part 3 is an inorganic phase change material, it is preferably a molten salt or a hydrated salt. When the solid-liquid phase change part 3 is an organic phase change material, the organic phase change material is preferably paraffin wax. When the solid-liquid phase change part 3 is a composite phase change material, it is preferably any one of graphite-based, graphene-based, and carbon fiber-based phase change materials. Its beneficial effects are: the above materials have high heat absorption and storage capacity and good heat dissipation performance.

[0040] Furthermore, the outer wall of the annular cavity 14 is close to the outer peripheral wall of the grinding body 11, and the inner wall of the annular cavity 14 is located outside the grinding teeth on the left and right sides of the grinding body 11. Preferably, the vertical distance between the outer wall of the annular cavity 14 and the outer peripheral wall of the grinding body 11 is 2-10 mm, and the lateral distance between the inner wall of the annular cavity 14 and the grinding teeth on the left and right sides is 0-5 mm. The beneficial effect is that this arrangement can both ensure the tool's load-bearing capacity and provide better heat dissipation.

[0041] Furthermore, the central shaft hole 100 of the wheel body 10 and the rotating shaft 4 are connected by a key 6. The two end faces of the wheel body 10, the locking disc 8, and the outer end ring 41 of the rotating shaft 4 are positioned and detachably fixedly connected by a first threaded component 7. The inner end of the rotating shaft 4 is connected to the drive unit 2, which is preferably a gear transmission system. The beneficial effect is that this arrangement enables high-precision installation and positioning of the grinding wheel 1, achieving high-quality grinding.

[0042] Furthermore, 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 interconnected. 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, and the axial distance between them 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 advantages are The results 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 them 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 is possible to 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 machining but also for special tool machining, thus expanding its applicability.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Furthermore, the left end of the first single-sided grinding tooth 12 is also provided with several coarse grinding teeth 17. The beneficial effect is that by setting coarse grinding teeth 17, a larger grinding depth can be used to quickly remove most of the excess material on the surface of the part, while fine grinding uses a very small grinding depth to ensure the micro-machining and high smoothness of the part surface. This grinding wheel can complete the dressing work of the workpiece 01 to be ground in one go, ensuring both processing speed and grinding accuracy.

[0047] 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.

[0048] 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 phase change cooling uniform temperature molar module, characterized in that, Includes: a grinding wheel (1), a solid-liquid phase change section (3), and a rotating shaft (4); The grinding wheel (1) includes a cylindrical wheel body (10) and an annular grinding body (11). The grinding body (11) is integrally formed on the outer peripheral wall of the wheel body (10). The central shaft hole (100) of the wheel body (10) is fixedly sleeved on the outer end of the rotating shaft (4). The inner end of the rotating shaft (4) is connected to the drive unit (2). The grinding body (11) has two vertical annular cavities (14) symmetrically arranged at its left and right ends. The inner walls of the two annular cavities (14) are connected by a number of circumferential array transverse temperature equalization connecting holes (15). The outer wall of the grinding body (11) is provided with a filling hole (16) connecting the annular cavities (14). The solid-liquid phase change part (3) is any one of inorganic phase change material, organic phase change material, and composite phase change material, and the solid-liquid phase change part (3) is filled in the annular cavity (14). When the local temperature of the grinding body (11) is too high during continuous operation, due to the conduction effect of the temperature equalization connecting hole (15), the solid-liquid phase change part (3) in the two annular cavities (14) can melt simultaneously and quickly and effectively absorb a large amount of heat. When the machine stops, it solidifies and conducts heat to the outside for recycling, thereby maintaining the temperature of the grinding wheel (1) at a suitable working temperature for stable and efficient grinding.

2. The phase change cooling uniform temperature grinding module according to claim 1, characterized in that, When the solid-liquid phase change part (3) is an inorganic phase change material, it is a molten salt or a hydrated salt.

3. The phase change cooling uniform temperature grinding module according to claim 1, characterized in that, When the solid-liquid phase change part (3) is an organic phase change material, the organic phase change material is paraffin.

4. The phase change cooling uniform temperature grinding module according to claim 1, characterized in that, When the solid-liquid phase change part (3) is a composite phase change material, it is any one of graphite-based, graphene-based, and carbon fiber-based phase change materials.

5. A phase-change cooling uniform temperature grinding module according to claim 1, characterized in that, The filling hole (16) is equipped with a filling nozzle (5) that is open to outward pressure by a one-way valve.

6. A phase change cooling uniform temperature grinding module according to claim 1, characterized in that, The outer wall of the annular cavity (14) is close to the outer peripheral wall of the grinding body (11), and the inner wall of the annular cavity (14) is located outside the grinding teeth on the left and right sides of the grinding body (11).

7. A phase-change cooling uniform temperature grinding module according to claim 6, characterized in that, The vertical distance between the outer wall of the annular cavity (14) and the outer peripheral wall of the grinding body (11) is 2-10 mm, and the lateral distance between the inner wall of the annular cavity (14) and the grinding teeth on the left and right sides is 0-5 mm.

8. A phase change cooling uniform temperature grinding module according to claim 1, characterized in that, The central shaft hole (100) of the wheel body (10) and the rotating shaft (4) are connected by a key (6). The two end faces of the wheel body (10) and the locking disc (8) and the outer end ring (41) of the rotating shaft (4) are positioned and detachably fixedly connected by a first threaded part (7). The drive unit (2) is a gear transmission system.

9. A phase-change cooling uniform temperature grinding module according to any one of claims 1 to 8, 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) 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 that the grinding start point of the left tooth mountain is always earlier than that of the right tooth mountain.

10. A phase change cooling uniform temperature grinding module according to claim 9, characterized in that, The left end of the first single-sided grinding tooth (12) is also provided with several coarse grinding teeth (17). The grinding wheel (1) is a grinding roller or a grinding wheel; The workpiece to be ground (01) is a spiral tap.

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