Ultrasonic vibration structure acting on grinding wheel of grinding machine and implementation method
By introducing an ultrasonic vibration structure and hydraulic system into the grinding wheel, the problems of easy clogging, thermal damage and low precision of the grinding wheel during the grinding process are solved, achieving efficient and stable grinding effect, extending the grinding wheel life and improving machining accuracy and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU KONEDA TECH CO LTD
- Filing Date
- 2026-03-24
- Publication Date
- 2026-05-01
AI Technical Summary
Existing grinding technologies suffer from problems such as easy chipping, low efficiency, wheel clogging, unstable grinding force, thermal damage, low precision, and high cost when machining difficult-to-machine materials. In particular, electroplated diamond and resin-coated diamond grinding wheels exhibit disadvantages such as poor chip removal, easy abrasive grain adhesion, concentrated grinding heat, and short wheel life during grinding, which cannot meet the requirements of high precision and high efficiency machining.
Employing an ultrasonic vibration structure, high-frequency mechanical vibration is transmitted to the grinding wheel of the grinding machine through an ultrasonic transducer and an amplitude transformer, enabling intermittent grinding, reducing thermal damage and wear. Combined with a hydraulic system and permanent magnets, the grinding wheel can be easily installed and removed, reducing frictional resistance and heat concentration, and improving machining accuracy and efficiency.
It effectively extends the life of the grinding wheel, reduces grinding force and thermal damage, improves machining accuracy and production efficiency, reduces the number of grinding wheel replacements and tool setting errors, and increases the yield rate.
Smart Images
Figure CN121946360A_ABST
Abstract
Description
An ultrasonic vibration structure acting on a grinding wheel and its implementation method Technical Field
[0001] This invention relates to the field of machining equipment technology, specifically to an ultrasonic vibration structure and its implementation method acting on a grinding wheel of a grinding machine. Background Technology
[0002] Specialty grinding machines are specialized grinding equipment designed for high-precision, difficult-to-machine materials or special geometries (such as complex curved surfaces, thin-walled parts, and irregularly shaped holes). Their core capabilities lie in multi-axis linkage control, micron-level precision, closed-loop feedback dressing, and compatibility with special grinding wheels. Specialty grinding machines are widely used in high-end fields such as semiconductors, 3C products, aerospace, and medical devices. Currently, there is an urgent need in the manufacturing industry for efficient and precise machining of difficult-to-machine materials, particularly addressing the challenges of grinding ceramics, silicon carbide, and various composite materials. Therefore, effective solutions are needed to address the issues of edge chipping and efficiency in the grinding process. Regarding the low efficiency issue, current ultrasonic vibration-assisted grinding technology primarily focuses on the development of ultrasonic power supplies and transducers. Current electroplated diamond grinding wheels inherently feature a single-layer abrasive grain distribution, with the bond (metal plating) and abrasive grains mechanically and micrometallurgically bonded. In contrast, resin-bonded diamond grinding wheels bond abrasive grains through a bond, resulting in inherent characteristics such as low bond strength, poor heat resistance, and multi-layered abrasive grain distribution with a certain porosity. Both types of grinding wheels exhibit the following technical disadvantages in use: 1. Extremely poor chip removal capability, leading to easy clogging of the grinding wheel; when grinding hard and brittle materials and various composite materials, fine chips easily adhere. 1. Debris adhering to the surface of abrasive grains and embedded in the gaps between them quickly causes wheel clogging, turning subsequent grinding into "hard rubbing" rather than "cutting"; 2. A sudden increase in grinding force causes abrasive grains to fall off prematurely. When the grinding wheel gaps are clogged, the frictional resistance between the grinding wheel and the workpiece, as well as the grinding force, increases significantly. Excessive grinding force can directly pull off un-dulled abrasive grains, drastically shortening the effective life of the grinding wheel. Furthermore, the detached abrasive grains can easily cause scratches on the workpiece surface; 3. Frequent grinding wheel replacements increase errors and costs. Due to the easy adhesion of debris, the grinding wheel life is shorter, increasing the cost of using the grinding wheel. Frequent replacement of new grinding wheels or downtime for grinding wheel overhauling is necessary. 4. Re-setting the tool increases the tool setting error and reduces the yield rate; 5. Grinding heat is highly concentrated, making the workpiece prone to thermal damage. The frictional heat generated during the grinding process cannot be effectively alleviated, and the electroplated diamond grinding wheel has no pores and poor heat dissipation capacity, so the heat will concentrate in the grinding area of the workpiece, resulting in thermal deformation, surface burns, and microcracks (especially for heat-sensitive / brittle materials such as cemented carbide and optical glass, the damage is irreversible); 6. Low machining accuracy and surface quality. Abrasive grain shedding, grinding wheel blockage, and unstable grinding force will lead to loss of control of motion accuracy during the grinding process, and the workpiece is prone to chipping, burrs, and surface roughness Ra. The value is too high and cannot meet the requirements of precision machining; 6. Grinding heat causes resin to soften and erode, and the grinding wheel needs to be dressed many times. Grinding heat is generated when the grinding wheel is grinding. When using resin diamond grinding wheels, the grinding heat will cause the temperature in the grinding zone to exceed the heat resistance threshold of the resin, causing the resin binder to soften and erode. The holding force of the diamond abrasive grains is lost instantly, and the abrasive grains fall off in batches. The grinding wheel wears very quickly and the contour retention is poor (for example, taper appears when grinding the outer circle, and the surface is uneven when grinding the plane). At this time, the machine needs to be stopped to dress the grinding wheel, which increases the downtime and reduces the grinding efficiency. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides an ultrasonic vibration structure and implementation method acting on a grinding wheel of a grinding machine, which can effectively solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: an ultrasonic vibration structure acting on a grinding wheel of a grinding machine, comprising a tool holder, a connecting keyway connected to the top of the tool holder, a mounting base integrally connected to the bottom of the tool holder, an inner support sleeve mounted on the bottom of the mounting base, a base plate integrally connected to the bottom of the inner support sleeve, a grinding wheel of the grinding machine being limited and connected to the outer side of the inner support sleeve, a limiting base plate detachably connected to the bottom of the base plate, the limiting base plate being detachably connected to the bottom of the base plate by multiple sets of internal hexagonal bolts; an ultrasonic wireless receiver is sleeved and mounted on the outer edge of the mounting base. An ultrasonic signal wireless receiving coil is embedded inside the ultrasonic wireless receiving device, and the signal receiving end of the ultrasonic wireless receiving device is connected to an external ultrasonic generator. An ultrasonic transducer is embedded in the inner cavity of the inner support sleeve, and an ultrasonic amplitude transformer is fixedly connected to the bottom of the ultrasonic transducer. The ultrasonic amplitude transformer is fixedly connected to the top of the limiting chassis. A central hole is opened at the center of the inner side of the ultrasonic transducer and the ultrasonic amplitude transformer. A central connecting bolt is embedded in the central hole, and a nut seat is connected to the end of the central connecting bolt at the center of the bottom of the limiting chassis.
[0005] As a preferred technical solution of the present invention, the grinding wheel is specifically one of electroplated diamond grinding wheel or resin diamond grinding wheel, and the ultrasonic transducer and ultrasonic amplitude transformer can be installed in one of three ways: external to the tool holder, internal to the tool holder, or directly on the tool holder.
[0006] As a preferred embodiment of the present invention, the ultrasonic generator and ultrasonic transducer convert the electrical signal into high-frequency mechanical vibration with an amplitude of 5-50 μm and a frequency of 20-40 kHz, which is transmitted to the grinding wheel of the grinding machine via the ultrasonic amplitude transformer.
[0007] As a preferred embodiment of the present invention, the ultrasonic transducer and the ultrasonic amplitude transformer are connected by ultrasonic transducer connecting bolts. Furthermore, the ultrasonic transducer and the ultrasonic amplitude transformer are fixedly connected inside the inner support sleeve by a central connecting bolt.
[0008] As a preferred embodiment of the present invention, the edge of the central connecting bolt is detachably connected to a connecting disc, the top surface of the connecting disc is provided with a snap-fit platform, the top of the inner cavity of the inner support sleeve is provided with an annular liquid bladder, the side of the annular liquid bladder is connected to a connecting conduit, the connecting conduit is arranged inside the inner support sleeve, and the extrusion end of the connecting conduit is connected to an embedded cylinder at a horizontal position inside the inner support sleeve, the embedded cylinder is tightly embedded and connected to the inner side of the inner support sleeve; the extrusion end of the connecting conduit is connected to a control valve, one end of the embedded cylinder is fixedly connected to an end plate, and the inner cavity of the embedded cylinder is slidably connected to a piston disc, one end of the piston disc is fixedly connected to a limiting support rod for snap-fitting and limiting the grinding wheel, the inner side of the embedded cylinder is provided with a baffle plate on one side of the piston disc, the center of the inner side of the baffle plate is provided with a flow hole, an adsorption plate is installed on the side of the piston disc near the baffle plate, and an electrically controlled permanent magnet is installed on the side of the baffle plate corresponding to the adsorption plate.
[0009] As a preferred embodiment of the present invention, the inner side of the grinding wheel is provided with an alignment slot, and the inner side of the grinding wheel is provided with a fitting seat on both sides of the alignment slot. When the grinding wheel is installed, the limiting support rod extends into the alignment slot, and the fitting seat is tightly fitted with the side wall of the inner support sleeve.
[0010] As a preferred embodiment of the present invention, the central connecting bolt is engaged with the connecting disc by a locking platform on its side. A limiting groove is provided inside the connecting disc at the corresponding locking platform. The extrusion protrusion on the connecting disc is in close contact with the annular liquid bladder, and the annular liquid bladder is filled with a hydraulic medium with a certain viscosity.
[0011] As a preferred embodiment of the present invention, the annular liquid bladder and the inner cavity of the embedded cylinder are connected by a connecting conduit, the cross-section of the flow hole on the inner side of the baffle is a tapered hole, and the electrically controlled permanent magnet attracts the adsorption disk by magnetic force.
[0012] A method for implementing an ultrasonic vibration structure acting on a grinding wheel of a grinding machine includes the following steps: Step A, selection and configuration of ultrasonic vibration components; Step B, determination of the installation method of the ultrasonic transducer; Step C, mechanical connection and fixing of the components; Step D, electrical connection and signal configuration; Step E, ultrasonic vibration transmission and activation of the grinding surface.
[0013] As a preferred technical solution of the present invention, step A involves selecting a suitable configuration scheme based on the size and specifications of the grinding wheel and the model of the tool holder before installing the ultrasonic vibration structure. The ultrasonic vibration structure consists of an ultrasonic wireless receiver, an ultrasonic signal wireless receiving coil, an ultrasonic transducer, an ultrasonic amplitude transformer, and an ultrasonic generator. Technical parameters need to be determined during the selection process. Step B involves three installation methods for the ultrasonic vibration structure: installation on the outside of the tool holder, installation inside the tool holder, and direct installation on the tool holder. The most suitable installation method needs to be selected based on the specific processing conditions during actual assembly. Step C involves mechanical connection and fixing after determining the installation method, installing the grinding wheel on the output end of the ultrasonic transducer and ultrasonic amplitude transformer to ensure that the high-frequency vibration generated by the ultrasonic transducer and ultrasonic amplitude transformer can be effectively transmitted to the grinding surface of the grinding wheel. A dynamic balance test is required after the initial installation. Step D involves the electrical connection of the ultrasonic vibration structure, which is a key aspect of its function. The ultrasonic transducer is electrically connected to the ultrasonic wireless receiver. The ultrasonic wireless receiver receives ultrasonic signals... When the ultrasonic vibration signal from the wave generator is received, the signal is transmitted to the ultrasonic transducer, which, in conjunction with the ultrasonic amplitude transformer, generates high-frequency vibration. During electrical connection, shielded cables must be used for the signal transmission line to prevent electromagnetic interference from affecting the ultrasonic vibration signal. The wiring should be located away from the high-power motor and frequency converter of the grinding machine. In step E, after installation and commissioning, the ultrasonic vibration begins to function. High-frequency vibration waves have excellent propagation properties in metallic media. By transmitting the high-frequency vibration from the ultrasonic transducer and ultrasonic amplitude transformer to the grinding wheel, the grinding surface of the grinding wheel vibrates. By introducing high-frequency ultrasonic vibration, the grinding wheel of the grinding machine achieves intermittent grinding during the grinding process. The abrasive grains under vibration impact the workpiece surface and chips at extremely high frequencies, shaking the chips off from the gaps between the abrasive grains. At the same time, vibration grinding reduces the frictional resistance between the grinding wheel and the workpiece, reducing the premature shedding of abrasive grains due to excessive cutting force. Furthermore, the friction-reducing and cooling effect of ultrasonic vibration is significant during the grinding process. High-frequency vibration causes periodic contact and separation in the grinding zone. This intermittent grinding mode breaks the continuous path of heat accumulation, allowing grinding heat to dissipate rapidly and avoiding excessive temperature concentration in the grinding zone that could lead to thermal damage.
[0014] Compared with existing technologies, this invention provides an ultrasonic vibration structure and implementation method acting on a grinding wheel of a grinding machine, which has the following beneficial effects: 1. By using an ultrasonic wireless receiving device, an ultrasonic signal wireless receiving coil, an ultrasonic transducer, and an ultrasonic amplitude transformer, ultrasonic vibration technology can be effectively integrated with grinding wheel grinding technology. A central hole is provided in the ultrasonic transducer and ultrasonic amplitude transformer to facilitate the connection of the central connecting bolt. The nut seat facilitates the stable fixing of the ultrasonic component. Furthermore, the use of hexagonal socket bolts and a limiting base facilitates further fixing of the position of the ultrasonic component, thereby ensuring stability. The wave generator and ultrasonic transducer convert electrical signals into high-frequency mechanical vibrations with an amplitude of 5-50 μm and a frequency of 20-40 kHz. High-frequency vibration waves have good propagation performance in metallic media and are transmitted to the grinding wheel of the grinding machine via the ultrasonic amplitude transformer, causing the grinding surface of the grinding wheel to vibrate. This enables intermittent grinding to reduce thermal damage and grinding wheel wear, overcoming the problems of easy chipping and low efficiency in traditional grinding. High-frequency vibration grinding reduces grinding resistance and improves processing efficiency. Furthermore, different ultrasonic structure installation methods can be selected according to the size of the grinding wheel and the model of the tool holder to achieve the best ultrasonic vibration transmission effect.
[0015] 2. By applying ultrasonic vibration to the grinding wheel, high-frequency ultrasonic vibration is added to the grinding wheel during operation. This high-frequency ultrasonic vibration can dislodge chips, solving the problem of easy clogging between abrasive grains, maintaining grinding sharpness, increasing machining accuracy, extending service life, saving grinding wheel costs, and making it less likely for chips to stick to the grinding wheel, making subsequent cleaning easier. It also significantly reduces grinding force, reduces premature abrasive grain detachment, and extends the effective life of the grinding wheel. By reducing friction and cooling, heat concentration in the grinding zone is avoided, preventing workpiece burns and micro-cracks, and improving surface accuracy. At the same time, due to the extended grinding wheel life, the time and frequency of grinding wheel replacement are saved, greatly reducing the error caused by tool setting after grinding wheel replacement, reducing the probability of errors, and thus improving product yield and production efficiency.
[0016] 3. The rotational displacement of the central connecting bolt facilitates the synchronous movement of the connecting disc and the extrusion protrusion on its side. The locking platform facilitates the locking, limiting, and disassembly between the connecting disc and the central connecting bolt. The extrusion protrusion then extrudes the annular liquid bladder, allowing the hydraulic fluid inside to be quickly introduced into the embedded cylinder through the connecting conduit. This hydraulic fluid drives the piston disc and the limiting rod to compress and displace, causing the limiting rod to embed into the alignment slot on the edge of the grinding wheel. This facilitates the quick installation and limiting of the grinding wheel. The fitting seat ensures convenient and tight installation and fixation, enabling stable and high-precision rotation. The suction plate on the side of the piston disc and the electro-controlled permanent magnet on the side of the stop disc allow the electro-controlled permanent magnet to attract the suction plate during grinding wheel disassembly, causing the piston disc to reset and displace. This allows hydraulic fluid to be introduced into the annular liquid bladder through the connecting conduit for accumulation, facilitating the sliding of the limiting rod out of the alignment slot and improving the ease of disassembly of the grinding wheel.
[0017] 4. The control valve at the end of the connecting conduit facilitates the opening and closing of the flow. The baffle and its internal conical flow hole facilitate the extrusion of hydraulic fluid, making it easier to move the piston disc. This increases the difficulty for the hydraulic fluid to return through the baffle, enhancing the strength of the hydraulic fluid's support for the piston disc. At the same time, the baffle also helps to limit the reset position of the piston disc, ensuring the stability of the piston disc's compression support for the limit rod and guaranteeing the effective limiting of the limit rod on the grinding wheel. Furthermore, when sudden stress occurs during the grinding process, the grinding wheel's force pushes the limit rod to make a slight displacement, thereby compressing the hydraulic fluid in the embedded cylinder. This compression of the hydraulic fluid buffers and absorbs stress, preventing damage to the workpiece from sudden stress. Attached Figure Description
[0018] Figure 1 is a schematic diagram of the structure of the present invention.
[0019] Figure 2 is a bottom schematic diagram of the present invention.
[0020] Figure 3 is a front view of the present invention.
[0021] Figure 4 is a cross-sectional view of the present invention.
[0022] Figure 5 is a schematic diagram of the structure of the central connecting bolt of the present invention.
[0023] Figure 6 is a schematic diagram of the structure of the ultrasonic transducer of the present invention.
[0024] Figure 7 is a schematic diagram of the embedded cylinder of the present invention.
[0025] Figure 8 is a schematic diagram of the ultrasonic generator of the present invention.
[0026] Figure 9 is a schematic diagram of the vibration direction of the ultrasonic component of the present invention installed inside the tool holder.
[0027] Figure 10 is a schematic diagram of the ultrasonic component of the present invention installed on the outside of the tool holder in the direction of vibration.
[0028] Figure 11 is a schematic diagram of the vibration direction of the ultrasonic component of the present invention directly mounted on the knife handle.
[0029] Figure 12 is a flowchart of the steps of the implementation method of the present invention.
[0030] In the diagram: 1. Tool holder; 2. Connecting key seat; 3. Mounting base; 4. Inner support sleeve; 5. Chassis base; 6. Grinding wheel; 7. Limiting chassis; 8. Ultrasonic wireless receiver; 9. Ultrasonic signal wireless receiving coil; 10. Ultrasonic transducer; 11. Ultrasonic amplitude transformer; 12. Hex socket head cap screw; 13. Center connecting bolt; 14. Nut seat; 15. Connecting disc; 16. Extrusion protrusion; 17. Clamping platform; 18. Center hole; 19. Annular liquid bladder; 20. Connecting conduit; 21. Embedded cylinder; 22. Control valve; 23. End plate; 24. Piston disc; 25. Limiting support rod; 26. Baffle; 27. Flow hole; 28. Adsorption plate; 29. Electro-controlled permanent magnet; 30. Ultrasonic generator; 31. Alignment slot; 32. Fitting bracket. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.
[0032] In the description of this invention, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.
[0033] In the description of this invention, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.
[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0035] Example: Please refer to Figures 1-9. The present invention provides the following technical solution: an ultrasonic vibration structure acting on a grinding wheel, including a tool holder 1, a connecting key seat 2 connected to the top of the tool holder 1, a mounting base 3 integrally connected to the bottom of the tool holder 1, an inner support sleeve 4 installed at the bottom of the mounting base 3, a base plate 5 integrally connected to the bottom of the inner support sleeve 4, a grinding wheel 6 of the grinding wheel 6 specifically being an electroplated diamond grinding wheel, a limiting base 7 detachably connected to the bottom end of the base plate 5, and the limiting base 7 being detachably connected to the bottom of the base plate 5 by multiple sets of internal hexagon bolts 12; a fitting is sleeved on the outer edge of the mounting base 3. An ultrasonic wireless receiver 8 is installed, with an ultrasonic signal wireless receiving coil 9 embedded inside the receiver 8. The signal receiving end of the ultrasonic wireless receiver 8 is connected to an external ultrasonic generator 30, which serves as the ultrasonic power source. The ultrasonic generator 30 has an adjustable frequency range of 15-40kHz and a power of 100-500W. An ultrasonic transducer 10 is embedded in the inner cavity of the inner support sleeve 4, and an ultrasonic amplitude transformer 11 is fixedly connected to the bottom of the ultrasonic transducer 10. The resonant frequency of the ultrasonic signal wireless receiving coil 9 is the same as the operating frequency of the ultrasonic transducer 10 and the ultrasonic amplitude transformer 11. The ultrasonic transducer 10 and ultrasonic amplitude transformer 11 are installed inside the tool holder 1. This installation method is suitable for grinding wheels with a diameter ≤150mm and a vibration transmission efficiency ≥85%. The ultrasonic generator 30 and ultrasonic transducer 10 convert electrical signals into high-frequency mechanical vibrations with an amplitude of 10-20μm and a frequency of 20-30kHz. The vibrations are transmitted to the grinding wheel 6 via the ultrasonic amplitude transformer 11, causing the grinding surface of the grinding wheel 6 to vibrate. This achieves intermittent grinding to reduce thermal damage and grinding wheel wear. The ultrasonic amplitude transformer 11 is fixedly connected to the top of the limiting base 7, and the amplitude amplification ratio of the ultrasonic amplitude transformer 11 is 1:3. A central hole 18 is provided at the center of the inner side of the ultrasonic transducer 10 and the ultrasonic amplitude transformer 11. A central connecting bolt 13 is embedded in the central hole 18. The ultrasonic transducer 10 and the ultrasonic amplitude transformer 11 are connected by an ultrasonic transducer connecting bolt. The ultrasonic transducer is a combination of the ultrasonic transducer 10 and the ultrasonic amplitude transformer 11. The ultrasonic transducer 10 and the ultrasonic amplitude transformer 11 are limited and connected inside the inner support sleeve 4 by the central connecting bolt 13, which facilitates the installation and connection of the ultrasonic transducer 10 and the ultrasonic amplitude transformer 11. A nut seat 14 is connected to the end of the central connecting bolt 13 at the center of the bottom of the limiting base 7.
[0036] The center connecting bolt 13 is detachably connected to a connecting disc 15 at its edge. A locking platform 17 is provided on the top surface of the connecting disc 15. An annular liquid bladder 19 is provided at the top of the inner cavity of the inner support sleeve 4. The center connecting bolt 13 is locked and engaged with the connecting disc 15 via the locking platform 17 at its edge. A limiting groove is provided inside the connecting disc 15 corresponding to the locking platform 17. The extrusion protrusion 16 on the connecting disc 15 is in close contact with the annular liquid bladder 19. The annular liquid bladder 19 is filled with a hydraulic medium of a certain viscosity. This hydraulic medium has a damping and vibration reduction effect at the working frequency of the ultrasonic transducer to absorb sudden grinding stress. The hydraulic medium is ISO VG. The hydraulic oil is No. 46, with a kinematic viscosity of 46 cSt at 40℃. The central connecting bolt 13 is engaged with the connecting disc 15 via a locking platform 17 on its edge. A limiting groove is provided inside the connecting disc 15 corresponding to the locking platform 17. The extrusion protrusion 16 on the connecting disc 15 is in close contact with the annular liquid bladder 19. The locking platform 17 facilitates the engagement, limiting, and disassembly of the connecting disc 15 and the central connecting bolt 13. A connecting conduit 20 is connected to the side of the annular liquid bladder 19. The connecting conduit 20 is arranged inside the inner support sleeve 4, and the extrusion end of the connecting conduit 20 is horizontally connected to the embedded cylinder 21 on the inner side of the inner support sleeve 4. The annular liquid bladder 19 and the embedded cylinder 21 form a closed hydraulic system, and the embedded cylinder 21 is tightly embedded and connected to the inner side of the inner support sleeve 4. The extrusion end of the connecting conduit 20 is connected to a control valve 22, and one end of the embedded cylinder 21 is fixedly connected to an end plate 23. The inner side of the embedded cylinder 21 is slidably connected to a piston disc 24. One end of the piston disc 24 is fixedly connected to a limiting support rod 25 for locking and limiting the grinding wheel 6. A baffle 26 is provided on the inner side of the embedded cylinder 21, located on one side of the piston disc 24. A flow hole 27 is provided at the center of the inner side of the baffle 26. An adsorption plate 28 is installed on the side of the piston disc 24 near the baffle 26, and an electrically controlled permanent magnet 29 is installed on the side of the baffle 26 corresponding to the adsorption plate 28. When the electrically controlled permanent magnet 29 is energized, it adsorbs the adsorption plate 28, causing the piston disc 24 to reset, thus limiting the movement of the piston disc 24. The support rod 25 retracts to release the grinding wheel 6. The annular liquid bladder 19 and the inner cavity of the embedded cylinder 21 are connected by a connecting conduit 20. The cross-section of the flow hole 27 on the inner side of the baffle 26 is a tapered hole. The electro-controlled permanent magnet 29 attracts the adsorption plate 28 by magnetic force, which facilitates the extrusion of hydraulic fluid and makes it easier to push the piston plate 24 to move. It increases the difficulty for the hydraulic fluid to pass through the baffle 26 when returning. The electro-controlled permanent magnet 29 is used to attract the adsorption plate 28, so that the piston plate 24 is reset and displaced.
[0037] The inner side of the grinding wheel 6 is provided with an alignment slot 31. The inner side of the grinding wheel 6 is provided with a fitting seat 32 on both sides of the alignment slot 31. When the grinding wheel 6 is installed, the limiting support rod 25 extends into the alignment slot 31. The fitting seat 32 fits tightly with the side wall of the inner support sleeve 4. The limiting support rod 25 is embedded into the alignment slot 31 on the side of the grinding wheel 6, which facilitates the quick installation and positioning of the grinding wheel 6. The fitting seat 32 ensures the convenience and tightness of the installation and fixation.
[0038] Please refer to Figure 10, Example 2: The ultrasonic transducer 10 and the ultrasonic amplitude transformer 11 are selected to be installed on the outside of the tool holder 1. This embodiment is suitable for application scenarios where the grinding wheel 6 is large and there is ample external space on the tool holder 1. This installation method is suitable for grinding wheel diameters of 150-300mm and vibration transmission efficiency of 75-80%.
[0039] Please refer to Figure 11, Example 3: The ultrasonic transducer 10 and the ultrasonic amplitude transformer 11 are selected to be directly mounted on the tool holder 1. This embodiment is suitable for production scenarios that require frequent grinding wheel replacement. This mounting method is suitable for scenarios with frequent replacement, and the vibration transmission efficiency is ≥90%.
[0040] Please refer to Figure 12. A method for implementing an ultrasonic vibration structure acting on a grinding wheel includes the following steps: Step A, selection and configuration of ultrasonic vibration components; Step B, determination of the installation method of the ultrasonic transducer; Step C, mechanical connection and fixing of the components; Step D, electrical connection and signal configuration; Step E, ultrasonic vibration transmission and activation of the grinding surface.
[0041] Step A involves selecting a suitable configuration based on the size and specifications of the grinding wheel 6 and the model of the tool holder 1 before installing the ultrasonic vibration structure. The ultrasonic vibration structure consists of an ultrasonic wireless receiver 8, an ultrasonic signal wireless receiving coil 9, an ultrasonic transducer 10, an ultrasonic amplitude transformer 11, and an ultrasonic generator 30. During the selection process, technical parameters need to be determined. The frequency range of the ultrasonic waves should meet the requirements of mechanical vibration, ensuring good propagation performance of the vibration waves in the metal medium. Simultaneously, the ultrasonic signal wireless receiving coil 9 receives control signals from the ultrasonic generator 30. Step B involves the installation methods of the ultrasonic vibration structure, including installation on the outside of the tool holder 1, installation inside the tool holder 1, and direct installation. There are three types of installation methods for the ultrasonic transducer 1. During actual assembly, the most suitable installation method needs to be selected based on the specific machining conditions. The installation method inside the tool holder 1 results in a shorter vibration transmission path and less energy loss. In step C, after determining the installation method, mechanical connection and fixing operations are required. The grinding wheel 6 is installed on the output end of the ultrasonic transducer 10 and ultrasonic amplitude transformer 11 to ensure that the high-frequency vibration generated by the ultrasonic transducer 10 and ultrasonic amplitude transformer 11 can be effectively transmitted to the grinding surface of the grinding wheel 6. After the initial installation is completed, a dynamic balance test is required to ensure stability under high-speed operation conditions. In step D, the electrical connection of the ultrasonic vibration structure is a key link in realizing its function. The ultrasonic transducer 10... Electrically connected to the ultrasonic wireless receiver 8, when the ultrasonic wireless receiver 8 receives the ultrasonic vibration signal from the ultrasonic generator 30, the signal is transmitted to the ultrasonic transducer 10, which, in conjunction with the ultrasonic amplitude transformer 11, generates high-frequency vibration. During the electrical connection process, shielded cables must be used for the signal transmission line to prevent electromagnetic interference from affecting the ultrasonic vibration signal. The wiring should be kept away from the high-power motor and frequency converter of the grinding machine. In step E, after installation and debugging, the ultrasonic vibration begins to function. High-frequency vibration waves have good propagation performance in metallic media. By transmitting high-frequency vibration from the ultrasonic transducer 10 and ultrasonic amplitude transformer 11 to the grinding wheel 6, the grinding surface of the grinding wheel 6 vibrates. By introducing high-frequency ultrasonic vibration, the grinding wheel 6 of the grinding machine achieves intermittent grinding during the grinding process. Intermittent grinding is a grinding state in which the abrasive grains of the grinding wheel periodically contact and separate from the workpiece surface. Under the action of vibration, the abrasive grains impact the workpiece surface and chips at an extremely high frequency, shaking the chips off from the gaps between the abrasive grains and effectively preventing the grinding wheel from clogging. At the same time, vibration grinding reduces the frictional resistance between the grinding wheel 6 and the workpiece, thereby reducing the grinding force and reducing the premature shedding of abrasive grains due to excessive cutting force. Furthermore, the friction-reducing and cooling effect of ultrasonic vibration is particularly significant during the grinding process. High-frequency vibration causes periodic contact and separation in the grinding zone. This intermittent grinding mode breaks the continuous path of heat accumulation, allowing the grinding heat to dissipate rapidly and avoiding excessive temperature concentration in the grinding zone that could lead to thermal damage.
[0042] The working principle and usage process of this invention are as follows: In practical application, the ultrasonic vibration component needs to be installed first. The installation method, where the ultrasonic component is installed inside the handle 1, is explained below. First, the ultrasonic wireless receiver 8 is installed on the outside of the mounting base 3, and then connected to the ultrasonic generator 30. Then, using the center hole 18 provided in the ultrasonic transducer 10 and ultrasonic amplitude transformer 11, the connection of the center connecting bolt 13 is facilitated. The ultrasonic transducer 10 and ultrasonic amplitude transformer 11 of the ultrasonic component are stably fixed using the nut seat 14. Simultaneously, the ultrasonic component is further positioned using the hexagonal socket bolt 12 and the limiting base 7. The device is fixed to ensure stability. During the installation of the center connecting bolt 13, the rotational displacement of the center connecting bolt 13 drives the connecting disc 15 and the extrusion protrusion 16 on its side to move synchronously. The extrusion protrusion 16 extrudes the annular liquid bladder 19, and the hydraulic fluid in the annular liquid bladder 19 is introduced into the embedded cylinder 21 through the connecting conduit 20. The hydraulic fluid drives the piston disc 24 and the limiting support rod 25 to extrude and move, so that the limiting support rod 25 is embedded into the alignment slot 31 on the side of the grinding wheel 6. This allows the grinding wheel 6 to be quickly installed and limited. The fitting seat 32 is used to ensure the convenience and tightness of its installation and fixation, so as to enable its stable and high-precision rotation. After the grinding wheel 6 is installed and limited by the limiting support rod 25, the opening and closing of its flow is controlled by the control valve 22 at the end of the connecting conduit 20. The baffle 26 and its internal conical flow hole 27 facilitate the extrusion of hydraulic fluid, making it easier to move the piston disc 24. This increases the difficulty for the hydraulic fluid to return through the baffle 26, enhancing the strength of the hydraulic fluid's support for the piston disc 24. Simultaneously, the baffle 26 also helps to restrict the reset position of the piston disc 24, ensuring the stability of the piston disc 24's compression support of the limiting support rod 25 and guaranteeing the effective limiting of the grinding wheel 6 by the limiting support rod 25. During the actual grinding operation of the grinding wheel 6, ultrasonic vibration technology is integrated with the grinding wheel... The grinding wheel technology is effectively integrated, enabling the ultrasonic generator 30 and ultrasonic transducer 10 to convert electrical signals into high-frequency mechanical vibrations with an amplitude of 5-50μm and a frequency of 20-40kHz. These vibrations are transmitted to the grinding wheel 6 via the ultrasonic amplitude transformer 11, causing the grinding surface of the grinding wheel 6 to vibrate. This achieves intermittent grinding to reduce thermal damage and wheel wear, overcoming the problems of easy chipping and low efficiency in traditional grinding. High-frequency vibration grinding reduces grinding resistance and improves processing efficiency. Furthermore, different ultrasonic structure installation methods can be selected according to the size of the grinding wheel 6 and the model of the tool holder 1 to achieve the best ultrasonic vibration transmission effect.Furthermore, by applying ultrasonic vibration to the grinding wheel 6, the grinding wheel experiences high-frequency ultrasonic vibration during operation. This high-frequency ultrasonic vibration dislodges chips, solving the problem of easy clogging between abrasive grains, maintaining grinding sharpness, increasing machining accuracy, extending service life, and saving grinding wheel costs. Chips are less likely to adhere to the grinding wheel, making subsequent cleaning easier. It also significantly reduces grinding force, decreases premature abrasive grain detachment, and extends the effective life of the grinding wheel. By reducing friction and cooling, it avoids heat concentration in the grinding zone, preventing workpiece burns and micro-cracks, and improving surface finish. Simultaneously, the extended grinding wheel life saves time and frequency of wheel replacements, greatly reducing errors during tool setting after wheel replacement, decreasing the probability of errors, and thus improving product yield and production efficiency. Meanwhile, sudden changes occur during the grinding process of the grinding wheel 6. When under stress, the grinding wheel 6 is subjected to force, which pushes the limiting support rod 25 to make a slight displacement. This causes the piston disc 24 to compress the hydraulic fluid in the embedded cylinder 21. The compression of the hydraulic fluid buffers and absorbs stress, preventing sudden stress from damaging the workpiece. Furthermore, when the grinding wheel 6 needs to be disassembled, the suction disc 28 on the side of the piston disc 24 and the electrically controlled permanent magnet 29 on the side of the stop disc 26 allow the electrically controlled permanent magnet 29 to attract the suction disc 28, causing the piston disc 24 to reset its displacement. This allows the hydraulic fluid to be introduced through the connecting conduit 20 into the annular liquid bladder 19 for accumulation, facilitating the sliding of the limiting support rod 25 out of the alignment slot 31. This improves the ease of disassembly of the grinding wheel 6.
[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An ultrasonic vibration structure acting on a grinding wheel of a grinding machine, comprising a tool holder (1), characterized in that: The top of the tool holder (1) is connected to a connecting key seat (2), and the bottom of the tool holder (1) is integrally connected to a mounting base (3). The bottom of the mounting base (3) is fitted with an inner support sleeve (4), and the bottom of the inner support sleeve (4) is integrally connected to a chassis seat (5). A grinding wheel (6) is limited and connected to the outer side of the inner support sleeve (4). A limiting chassis (7) is detachably connected to the bottom of the chassis seat (5). The limiting chassis (7) is detachably connected to the bottom of the chassis seat (5) by multiple sets of internal hexagonal bolts (12). An ultrasonic wireless receiver (8) is fitted and installed on the outer side of the mounting base (3), and an ultrasonic signal wireless receiver (8) is embedded and installed inside the ultrasonic wireless receiver (8). The receiving coil (9) and the signal receiving end of the ultrasonic wireless receiving device (8) are connected to the external ultrasonic generator (30). An ultrasonic transducer (10) is embedded in the inner cavity of the inner support sleeve (4). An ultrasonic amplitude rod (11) is fixedly connected to the bottom of the ultrasonic transducer (10). The ultrasonic amplitude rod (11) is fixedly connected to the top of the limiting chassis (7). A center hole (18) is opened at the center of the inner side of the ultrasonic transducer (10) and the ultrasonic amplitude rod (11). A center connecting bolt (13) is embedded in the center hole (18). A nut seat (14) is connected to the end of the center connecting bolt (13) at the center of the bottom of the limiting chassis (7).
2. The ultrasonic vibration structure acting on a grinding wheel of a grinding machine according to claim 1, characterized in that: The grinding wheel (6) is specifically one of electroplated diamond grinding wheel or resin diamond grinding wheel. The ultrasonic transducer (10) and ultrasonic amplitude transformer (11) can be installed in one of three ways: outside the tool holder (1), inside the tool holder (1), or directly on the tool holder.
3. The ultrasonic vibration structure acting on a grinding wheel of a grinding machine according to claim 1, characterized in that: The ultrasonic generator (30) and ultrasonic transducer (10) convert electrical signals into high-frequency mechanical vibrations with an amplitude of 5-50 μm and a frequency of 20-40 kHz, which are transmitted to the grinding wheel (6) of the grinding machine via the ultrasonic amplitude transformer (11).
4. The ultrasonic vibration structure acting on a grinding wheel of a grinding machine according to claim 1, characterized in that: The ultrasonic transducer (10) and the ultrasonic amplitude transformer (11) are connected by ultrasonic transducer connecting bolts. The ultrasonic transducer (10) and the ultrasonic amplitude transformer (11) are limited and connected inside the inner support sleeve (4) by a central connecting bolt (13).
5. The ultrasonic vibration structure acting on a grinding wheel according to claim 4, characterized in that: The edge of the central connecting bolt (13) is detachably connected to a connecting disc (15). The top surface of the connecting disc (15) is provided with a snap-fit platform (17). The top of the inner cavity of the inner support sleeve (4) is provided with an annular liquid bladder (19). The side of the annular liquid bladder (19) is connected to a connecting conduit (20). The connecting conduit (20) is arranged inside the inner support sleeve (4), and the extrusion end of the connecting conduit (20) is connected to an embedded cylinder (21) at a horizontal position inside the inner support sleeve (4). The embedded cylinder (21) is tightly embedded and connected to the inner side of the inner support sleeve (4). The extrusion end of the connecting conduit (20) is connected to a control valve (22). One end of the embedded cylinder (21) is fixedly connected to an end plate (23), and the inner end of the embedded cylinder (21) is slidably connected to a piston disc (24). One end of the piston disc (24) is fixedly connected to a limiting support rod (25) for locking and limiting the grinding wheel (6). A baffle (26) is provided on the inner side of the embedded cylinder (21) on one side of the piston disc (24). A flow hole (27) is provided at the center of the inner side of the baffle (26). An adsorption plate (28) is installed on the side end of the piston disc (24) near the baffle (26), and an electrically controlled permanent magnet (29) is installed on the side end of the baffle (26) corresponding to the adsorption plate (28).
6. The ultrasonic vibration structure acting on a grinding wheel of a grinding machine according to claim 5, characterized in that: The inner side of the grinding wheel (6) is provided with a positioning slot (31). The inner side of the grinding wheel (6) is provided with a fitting seat (32) on both sides of the positioning slot (31). When the grinding wheel (6) is installed, the limiting support rod (25) extends into the positioning slot (31). The fitting seat (32) is tightly fitted with the side wall of the inner support sleeve (4).
7. The ultrasonic vibration structure acting on a grinding wheel of a grinding machine according to claim 5, characterized in that: The central connecting bolt (13) is locked and engaged with the connecting disc (15) through the locking platform (17) on its side. A limiting groove is provided inside the connecting disc (15) corresponding to the locking platform (17). The extrusion protrusion (16) on the connecting disc (15) is in close contact with the annular liquid bladder (19), and the annular liquid bladder (19) is filled with a hydraulic medium with a certain viscosity.
8. The ultrasonic vibration structure acting on a grinding wheel of a grinding machine according to claim 5, characterized in that: The annular liquid bladder (19) and the inner cavity of the embedded cylinder (21) are connected by a connecting conduit (20). The cross-section of the flow hole (27) on the inner side of the baffle (26) is a tapered hole. The electrically controlled permanent magnet (29) attracts the adsorption disk (28) by magnetic force.
9. A method for implementing the ultrasonic vibration structure acting on a grinding wheel as described in any one of claims 1-8, characterized in that: The implementation steps include: Step A, selection and configuration of ultrasonic vibration components; Step B, determination of the installation method of ultrasonic transducers; Step C, mechanical connection and fixation of components; Step D, electrical connection and signal configuration; Step E, ultrasonic vibration transmission and grinding surface activation.
10. A method for implementing an ultrasonic vibration structure acting on a grinding wheel according to claim 9, characterized in that: Step A involves selecting a suitable configuration scheme based on the size and specifications of the grinding wheel (6) and the model of the tool holder (1) before installing the ultrasonic vibration structure. The ultrasonic vibration structure consists of an ultrasonic wireless receiver (8), an ultrasonic signal wireless receiver coil (9), an ultrasonic transducer (10), an ultrasonic amplitude transformer (11), and an ultrasonic generator (30). During the selection process of the ultrasonic vibration structure, technical parameters need to be determined. Step B involves three installation methods for the ultrasonic vibration structure: installation on the outside of the tool holder (1), installation inside the tool holder (1), and direct installation on the tool holder. In the actual assembly process, the appropriate method needs to be determined based on the specific processing conditions. To select the most suitable installation method; in step C, after determining the installation method, mechanical connection and fixing operations are required. The grinding wheel (6) is installed on the output end of the ultrasonic transducer (10) and ultrasonic amplitude transformer (11) to ensure that the high-frequency vibration generated by the ultrasonic transducer (10) and ultrasonic amplitude transformer (11) can be effectively transmitted to the grinding surface of the grinding wheel (6). After the initial installation is completed, dynamic balance test is required; in step D, the electrical connection of the ultrasonic vibration structure is the key link to realize its function. The ultrasonic transducer (10) is electrically connected to the ultrasonic wireless receiver (8). When an ultrasonic vibration signal is received from the ultrasonic generator (30), the signal is transmitted to the ultrasonic transducer (10), which, in conjunction with the ultrasonic amplitude transformer (11), generates high-frequency vibration. During the electrical connection process, the signal transmission line must use a shielded cable to prevent electromagnetic interference from affecting the ultrasonic vibration signal. The line layout must be kept away from the interference of the high-power motor and frequency converter of the grinding machine. In step E, after the installation and debugging are completed, the ultrasonic vibration begins to play its role. The high-frequency vibration wave has good propagation performance in the metal medium. By transmitting the high-frequency vibration from the ultrasonic transducer (10) and the ultrasonic amplitude transformer (11) to the grinding wheel (6), the grinding wheel is made to vibrate. The grinding wheel (6) generates vibration on the grinding surface. By introducing ultrasonic high-frequency vibration, the grinding wheel (6) achieves intermittent grinding during the grinding process. The abrasive grains under vibration impact the workpiece surface and chips at extremely high frequencies, shaking the chips off from the gaps between the abrasive grains. At the same time, vibration grinding reduces the frictional resistance between the grinding wheel (6) and the workpiece, reducing the premature shedding of abrasive grains due to excessive cutting force. Furthermore, during the grinding process, the friction reduction and cooling effect of ultrasonic vibration is significant. High-frequency vibration causes the grinding zone to form periodic contact and separation. This intermittent grinding mode breaks the continuous path of heat accumulation, allowing the grinding heat to diffuse rapidly and avoiding excessive temperature concentration in the grinding zone, which could lead to thermal damage.