Thermal vibration mechanism for improving grinding performance of cubic boron nitride material

Abstract

The utility model provides a heat vibration mechanism of promoting cubic boron nitride material grinding performance belongs to cubic boron nitride material technical field, including heating assembly, including base, fixedly connected in the frame of base side wall, the inductive furnace of adaptive installation in the middle of frame, and the mounting plate of sliding connection in base side wall, vibration subassembly, including fixedly connected in the support of support plate upper end, fixedly connected in the support end of support, the support pole of inserting in the end of fixed base. The utility model has the advantages of: heating assembly adopts inductive furnace to realize controllable temperature softening, avoids the hardness drop and mechanical property deterioration caused by material phase change, avoids the surface burn of cubic boron nitride caused by friction overheating. Bidirectional composite vibration mode can transmit periodic energy to the grinding interface, promotes the uniform distribution of cubic boron nitride material internal stress, optimizes the contact state of abrasive grain and material, promotes abrasive grain cutting efficiency, makes the grinding surface texture more uniform.

Description

Technical Field

[0001] This utility model belongs to the technical field of cubic boron nitride materials, specifically relating to a thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials. Background Technology

[0002] Cubic boron nitride, as a superhard material, is second only to diamond in hardness. It also has advantages such as high temperature resistance and strong chemical inertness. It has become a key material in aerospace, automobile manufacturing, and high-end equipment fields. Examples include cubic boron nitride cutting tools for machining high-temperature alloys, cubic boron nitride bushings for high-speed precision bearings, and cubic boron nitride grinding discs for semiconductor wafers.

[0003] Traditional cold grinding relies on high-hardness grinding wheels (such as diamond wheels) to directly cut cubic boron nitride materials. The high grinding resistance leads to rapid wear of the grinding wheels, low processing efficiency, and frequent grinding wheel replacements, resulting in high labor and equipment costs. The rigid friction between the grinding wheel and the material can easily generate local high temperatures, causing burns and oxidation on the surface of cubic boron nitride, as well as surface microcracks, which affect the service life of the parts. Utility Model Content

[0004] The purpose of this invention is to provide a thermal vibration mechanism that improves the grinding performance of cubic boron nitride materials, thereby addressing the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A thermal vibration mechanism to improve the grinding performance of cubic boron nitride materials includes, The heating assembly includes a base, a frame fixedly connected to the side wall of the base, an induction furnace adapted to be installed in the middle of the frame, and a mounting plate slidably connected to the side wall of the base, wherein a support plate is slidably connected to the side wall of the mounting plate. The vibration assembly includes a bracket fixedly connected to the upper end of the support plate, a fixed seat fixedly connected to the end of the bracket, a support rod inserted into the end of the fixed seat, a connector fixedly connected to the end of the support rod, an extension plate fixedly connected to the end of the connector, and a main eccentric wheel rotatably connected to the middle of the bracket. The end of the extension plate extends to the center of the induction furnace feed inlet, and the main eccentric wheel is rotatably disposed below the fixed seat.

[0006] As a preferred embodiment of the present invention, the vibration assembly further includes a bearing seat fixedly connected to the side wall of the support, a main shaft rotatably connected to the middle of the bearing seat, a transmission gear fixedly connected to the side wall of the main shaft, and a drive gear rotatably mounted on the side wall of the support. The side wall of the drive gear meshes with the side wall of the transmission gear, and the main eccentric wheel is keyed to the end of the main shaft.

[0007] In a preferred embodiment of this utility model, a drive motor is bolted to the inner side of the bracket, and a synchronous pulley is installed at the output end of the drive motor and the end of the central shaft of the drive gear. The sidewalls of the two sets of synchronous pulleys are connected by a synchronous belt drive.

[0008] As a preferred embodiment of this utility model, a spring is sleeved on the side wall of the support rod, and the two ends of the spring are in elastic contact with the side wall of the fixing seat and the connecting member, respectively.

[0009] In a preferred embodiment of this utility model, a swing motor is bolted to the middle of the bracket, and a rotating rod is connected to the output shaft end of the swing motor via a coupling. A secondary eccentric wheel is fixedly connected to the end of the rotating rod, and the secondary eccentric wheel is symmetrically arranged on the outside of the swing motor.

[0010] In a preferred embodiment of this utility model, the side wall of the mounting plate is bolted to a guide rail, and the end of the support plate is slidably connected to the side wall of the guide rail.

[0011] In a preferred embodiment of this utility model, a slide is fixedly connected to the end of the base, the mounting plate is bolted to the upper end of the slide, and the end of the slide extends to the side wall of the frame.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: The heating component uses an induction furnace to achieve controllable temperature softening, avoiding the decrease in hardness and deterioration of mechanical properties caused by material phase transformation, while also reducing the resistance to plastic deformation of the material, thus reducing the wear rate of the grinding wheel, extending the grinding wheel replacement cycle, and reducing processing costs. Simultaneously, low-resistance grinding reduces rigid friction between the grinding wheel and the material, preventing surface burns of cubic boron nitride due to frictional overheating. The bidirectional composite vibration mode can transfer periodic energy to the grinding interface, promoting uniform stress distribution within the cubic boron nitride material, avoiding microcrack formation caused by localized stress concentration, optimizing the contact state between the abrasive grains and the material, improving abrasive cutting efficiency, and simultaneously making the ground surface texture more uniform, reducing surface residual stress, and improving the fatigue life of cubic boron nitride parts. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention. Figure 3 This is a three-dimensional structural diagram of the vibration component of this utility model; Figure 4 This is a side view of the vibration assembly of this utility model; Figure 5 This is a schematic diagram of the internal cross-sectional structure of the vibration component of this utility model.

[0014] In the diagram: 100, heating component; 101, base; 102, frame; 103, induction furnace; 104, mounting plate; 105, support plate; 106, guide rail; 107, slide table; 200, vibration component; 201, bracket; 202, fixed seat; 203, support rod; 204, connector; 205, extension plate; 206, main eccentric wheel; 207, bearing seat; 208, main shaft; 209, transmission gear; 210, drive gear; 211, drive motor; 212, synchronous pulley; 213, spring; 214, swing motor; 215, rotating rod; 216, secondary eccentric wheel. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0018] Example Reference Figure 1-5 This embodiment of the present invention provides a thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials, comprising: The heating assembly 100 includes a base 101, a frame 102 fixedly connected to the side wall of the base 101, an induction furnace 103 adapted to be installed in the middle of the frame 102, and a mounting plate 104 slidably connected to the side wall of the base 101. A support plate 105 is slidably connected to the side wall of the mounting plate 104. The vibration assembly 200 includes a bracket 201 fixedly connected to the upper end of the support plate 105, a fixed seat 202 fixedly connected to the end of the bracket 201, a support rod 203 inserted into the end of the fixed seat 202, a connector 204 fixedly connected to the end of the support rod 203, an extension plate 205 fixedly connected to the end of the connector 204, and a main eccentric wheel 206 rotatably connected to the middle of the bracket 201. The end of the extension plate 205 extends to the center of the feed inlet of the induction furnace 103, and the main eccentric wheel 206 is rotatably disposed below the fixed seat 202.

[0019] The base 101 provides rigid support for the entire mechanism. The induction furnace 103 generates a high-frequency alternating magnetic field through electromagnetic induction, causing eddy current heat to be generated inside the material to be ground, achieving controllable softening of the material, reducing cutting resistance during grinding, and reducing wear on the grinding wheel. The mounting plate 104 and the support plate 105 are movable and adjustable to further fine-tune the height or lateral position of the vibration component 200, ensuring that the extension plate 205 accurately extends into the center of the inlet of the induction furnace 103. The bracket 201 is fixed to the upper end of the support plate 105 by bolts, forming a rigid frame for the vibration component 200. The end of the bracket 201 is welded to the fixed seat 202, and the support rod 203 can slide axially along the inner hole of the fixed seat 202. Its end is rigidly connected to the extension plate 205 through the connector 204. The extension plate 205 is the final carrier for vibration transmission. Its end extends into the center of the inlet of the induction furnace 103, directly contacting the boron nitride material, and transmitting vibration energy to the grinding interface. When the main eccentric wheel 206 rotates, the centrifugal force of the eccentric wheel will drive the fixed seat 202 to move up and down reciprocally, which in turn drives the extension plate 205 to generate high-frequency up and down vibration through the support rod 203 and the connecting piece 204, and is transmitted to the heated boron nitride material through the extension plate.

[0020] Specifically, the vibration assembly 200 also includes a bearing housing 207 fixedly connected to the side wall of the support 201, a main shaft 208 rotatably connected to the middle of the bearing housing 207, a transmission gear 209 fixedly connected to the side wall of the main shaft 208, and a drive gear 210 rotatably mounted on the side wall of the support 201. The side wall of the drive gear 210 meshes with the side wall of the transmission gear 209. The main eccentric wheel 206 is keyed to the end of the main shaft 208. A drive motor 211 is bolted to the inside of the support 201. A synchronous pulley 212 is installed at the output end of the drive motor 211 and the end of the central shaft of the drive gear 210. The side walls of the two sets of synchronous pulleys 212 are connected by a synchronous belt drive.

[0021] The drive gear 210 meshes with the transmission gear 209 on the main shaft 208 (gear meshing enables power reversal, transmitting the rotational motion of the motor to the main shaft); the main shaft 208 is rotatably supported by the bearing housing 207 (fixed to the side wall of the bracket), ensuring no radial runout when the main shaft rotates at high speed. The drive motor 211 is bolted to the inside of the bracket 201. Both the output shaft of the drive motor 211 and the central shaft of the drive gear 210 are equipped with synchronous pulleys 212. The two sets of synchronous pulleys transmit the motor power to the drive gear 210 via synchronous belt drive (synchronous belt drive avoids slippage and ensures speed stability). Furthermore, a spring 213 is sleeved on the side wall of the support rod 203, and the two ends of the spring 213 are in elastic contact with the side wall of the fixed seat 202 and the connecting member 204, respectively.

[0022] Among them, the support rod 203 is fitted with a spring 213 on its side wall. The two ends of the spring are in elastic contact with the fixed seat 202 and the connecting piece 204 respectively. The spring 213 can absorb vibration impact and avoid wear of parts caused by rigid collision. At the same time, it helps the support rod to quickly reset and ensure the regularity of vibration (the vibration frequency is adjusted by the speed of the drive motor, and the amplitude is determined by the eccentricity of the main eccentric wheel).

[0023] Preferably, a swing motor 214 is bolted to the middle of the bracket 201, and a rotating rod 215 is connected to the output shaft end of the swing motor 214 via a coupling. A secondary eccentric wheel 216 is fixedly connected to the end of the rotating rod 215, and the secondary eccentric wheel 216 is symmetrically arranged on the outside of the swing motor 214.

[0024] When the swing motor 214 drives the rotating rod 215 to rotate, the centrifugal force of the two auxiliary eccentric wheels will generate a lateral thrust, which will push the bracket 201 to drive the entire vibration assembly to produce a slight lateral swing. This swing is superimposed with the vertical vibration to form a bidirectional composite vibration, which can further affect the boron nitride material.

[0025] It should be noted that the side wall of the mounting plate 104 is bolted to the guide rail 106, and the end of the support plate 105 is slidably connected to the side wall of the guide rail 106.

[0026] The mounting plate 104 can slide along the slide table 107, causing the vibration assembly to move closer to and further away from the induction furnace 103, thus adjusting the longitudinal depth of the vibration.

[0027] Preferably, a slide 107 is fixedly connected to the end of the base 101, and the mounting plate 104 is bolted to the upper end of the slide 107, with the end of the slide 107 extending to the side wall of the frame 102.

[0028] The support plate 105 can slide up and down along the guide rail 106 to further fine-tune the height position of the vibration component and ensure that the extension plate 205 is accurately inserted into the center of the feed port of the induction furnace 103.

[0029] Before starting the mechanism, the vibration assembly and heating assembly must be precisely aligned according to the size of the cubic boron nitride workpiece to be ground and the required grinding depth. Loosen the connecting bolts between the mounting plate 104 and the slide table 107, and push the mounting plate 104 to slide along the slide table 107 at the end of the base 101 (the slide table's extension direction is parallel to the induction furnace 103's feed axis), causing the vibration assembly to move closer to or further away from the induction furnace 103. Loosen the limiting components between the support plate 105 and the guide rail 106, allowing the support plate 105 to slide up and down along the guide rail 106 on the side wall of the mounting plate 104. Fine-tune the height and lateral position of the extension plate 205, ultimately ensuring that the end of the extension plate precisely extends into the center of the induction furnace 103's feed inlet, ensuring that subsequent vibration energy directly acts on the workpiece grinding area.

[0030] After the position adjustment is completed, the induction furnace 103 is started. It generates a high-frequency alternating magnetic field through the principle of electromagnetic induction. After the cubic boron nitride workpiece is ground, eddy current heat is generated inside, realizing controllable softening (the temperature is controlled below the material phase transition point to avoid performance degradation), laying the foundation for subsequent low-resistance grinding.

[0031] When the cubic boron nitride workpiece reaches the preset softening temperature, the vibration assembly is activated. The drive motor 211 inside the support 201 starts, and its output shaft transmits power to the drive gear 210 via a synchronous belt drive through two sets of synchronous pulleys 212 on the central shaft of the drive gear 210. The drive gear 210 meshes with the transmission gear 209 on the side wall of the main shaft 208, while the main shaft 208 is rotatably supported by the bearing seat 207 on the side wall of the support. The main eccentric wheel 206 at the end of the main shaft 208 rotates synchronously with the main shaft. Centrifugal force periodically drives the fixed seat 202 below to move up and down reciprocally. The fixed seat 202 drives the extension plate 205 to vibrate up and down synchronously through the support rod 203 and the connecting piece 204 (the vibration frequency is adjusted by the speed of the drive motor, and the amplitude is determined by the eccentricity of the main eccentric wheel). The two ends of the spring 213 on the side wall of the support rod 203 are in elastic contact with the fixed seat 202 and the connecting piece 204 respectively, which not only absorbs the vibration impact (avoiding rigid collisions that cause component wear), but also assists the support rod to quickly reset, ensuring the regularity and continuity of the vibration.

[0032] The swing motor 214 in the middle of the bracket 201 starts, and its output shaft drives the rotating rod 215 to rotate through the coupling (to compensate for installation errors and ensure smooth power transmission). The auxiliary eccentric wheels 216 symmetrically arranged at both ends of the rotating rod 215 rotate synchronously with the rotating rod. The centrifugal force of the two eccentric wheels forms a resultant force in opposite directions, generating a lateral thrust, which pushes the bracket 201 to drive the entire vibration assembly to produce a slight lateral swing. The lateral swing and the high-frequency vibration driven by the main eccentric wheel act synchronously on the extension plate 205 to form a bidirectional composite vibration, which is directly transmitted to the grinding interface of the heated cubic boron nitride workpiece through the extension plate.

[0033] In summary, the heating assembly utilizes an induction furnace to generate eddy current heat within the cubic boron nitride material being ground, achieving controlled temperature softening. This avoids the decrease in hardness and deterioration of mechanical properties caused by material phase transformation, while also reducing the material's resistance to plastic deformation. This reduces the wear rate of the grinding wheel, extends the grinding wheel replacement cycle, and lowers processing costs. Simultaneously, low-resistance grinding reduces rigid friction between the grinding wheel and the material, preventing surface burns of the cubic boron nitride due to frictional overheating. The bidirectional composite vibration mode transfers periodic energy to the grinding interface, promoting uniform stress distribution within the cubic boron nitride material, preventing microcracks caused by localized stress concentration, optimizing the contact state between the abrasive grains and the material, improving abrasive cutting efficiency, and resulting in a more uniform surface texture, reduced surface residual stress, and improved fatigue life of the cubic boron nitride parts.

[0034] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0035] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0036] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials, characterized in that: include, The heating assembly (100) includes a base (101), a frame (102) fixedly connected to the side wall of the base (101), an induction furnace (103) adapted to be installed in the middle of the frame (102), and a mounting plate (104) slidably connected to the side wall of the base (101), wherein a support plate (105) is slidably connected to the side wall of the mounting plate (104). The vibration assembly (200) includes a bracket (201) fixedly connected to the upper end of the support plate (105), a fixed seat (202) fixedly connected to the end of the bracket (201), a support rod (203) inserted into the end of the fixed seat (202), a connector (204) fixedly connected to the end of the support rod (203), an extension plate (205) fixedly connected to the end of the connector (204), and a main eccentric wheel (206) rotatably connected to the middle of the bracket (201). The end of the extension plate (205) extends to the center of the feed inlet of the induction furnace (103), and the main eccentric wheel (206) is rotatably disposed below the fixed seat (202).

2. The thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials according to claim 1, characterized in that: The vibration assembly (200) further includes a bearing housing (207) fixedly connected to the side wall of the bracket (201), a main shaft (208) rotatably connected to the middle of the bearing housing (207), a transmission gear (209) fixedly connected to the side wall of the main shaft (208), and a drive gear (210) rotatably mounted on the side wall of the bracket (201). The side wall of the drive gear (210) meshes with the side wall of the transmission gear (209), and the main eccentric wheel (206) is keyed to the end of the main shaft (208).

3. The thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials according to claim 2, characterized in that: The inner side of the bracket (201) is connected to a drive motor (211) by bolts. The output end of the drive motor (211) and the end of the central shaft of the drive gear (210) are equipped with a synchronous pulley (212) for use. The side walls of the two sets of synchronous pulleys (212) are connected by synchronous belt drive.

4. The thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials according to claim 3, characterized in that: The side wall of the support rod (203) is fitted with a spring (213), and the two ends of the spring (213) are in elastic contact with the side wall of the fixed seat (202) and the connector (204), respectively.

5. The thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials according to claim 4, characterized in that: The bracket (201) is bolted to the middle position of the swing motor (214). The output shaft of the swing motor (214) is connected to a rotating rod (215) via a coupling. The end of the rotating rod (215) is fixedly connected to a secondary eccentric wheel (216). The secondary eccentric wheel (216) is symmetrically arranged on the outside of the swing motor (214).

6. The thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials according to claim 5, characterized in that: The mounting plate (104) has a guide rail (106) bolted to its side wall, and the end of the support plate (105) is slidably connected to the side wall of the guide rail (106).

7. The thermal vibration mechanism for improving the grinding performance of cubic boron nitride materials according to claim 6, characterized in that: The base (101) is fixedly connected to a slide (107) at its end. The mounting plate (104) is bolted to the upper end of the slide (107), and the end of the slide (107) extends to the side wall of the frame (102).

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