Composite vibration gradual change type ultrasonic sawing machine

Abstract

The invention relates to the technical field of machining, in particular to a composite vibration gradual change type ultrasonic sawing machine which comprises a machine body, a supporting base, a workbench, a clamping device, a positioning device, a sawtooth cutter, a control system and a cooling system. One end of the sawtooth cutter is connected with the swing mechanism, the sawtooth cutter transversely reciprocates above the lathe bed through the swing mechanism, the other end of the sawtooth cutter is connected with the transverse ultrasonic generator, and the longitudinal ultrasonic generator and the stand column are arranged in the longitudinal direction of the sawtooth cutter. One end of the stand column is connected with the sawtooth cutter, the other end of the stand column is connected with the saw frame, the side face of the saw frame is connected with the saw beam, and one end of the saw beam is hinged to the supporting base. Through the composite vibration mode and the innovative saw blade design, the hard material cutting efficiency and precision are remarkably improved, and the service life of a tool is remarkably prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of machining, and in particular to a composite vibration gradient ultrasonic sawing machine. Background Art

[0002] Ultrasonic machining is a machining method that uses ultrasonic vibration tools to produce abrasive impact, polishing, hydraulic impact and the resulting cavitation in a liquid medium with abrasives or dry abrasives to remove materials, or applies ultrasonic frequency vibration to the tool or workpiece in a certain direction for vibration processing, or uses ultrasonic vibration to make the workpieces combine with each other. The ultrasonic device is mainly composed of an ultrasonic generator, an ultrasonic vibration system, a machine tool, an abrasive suspension circulation system and a transducer cooling system. The function of the ultrasonic generator is to convert industrial frequency alternating current into ultrasonic frequency oscillation to provide energy for the reciprocating vibration of the tool end face and the removal of workpiece material. The ultrasonic vibration system includes an ultrasonic transducer, a horn and a tool. The function of the ultrasonic transducer is to convert high-frequency electrical oscillation signals into mechanical vibrations. The function of the horn is to amplify the ultrasonic vibration amplitude obtained by the transducer.

[0003] At present, ultrasonic machining technology has become mature and has been combined with a variety of machine tools, suitable for a variety of processing. Therefore, for industrial manufacturing with high requirements for precision cutting, especially in the processing of hard materials, ultrasonic assisted cutting has begun to be used because traditional sawing machines face problems such as low efficiency, poor cutting accuracy, and severe tool wear; but the existing ultrasonic assisted cutting technology, although it can effectively improve the vibration problem during the cutting process, most of them still use ultrasonic or mechanical vibration in a single direction, resulting in uneven vibration transmission and poor cutting effect. At the same time, the tooth shape design of the saw blade has a direct impact on the cutting quality. The fixed tooth shape design of the traditional saw blade shows poor adaptability when facing materials of different hardness and different materials. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a composite vibration gradient ultrasonic sawing machine, which solves the problems of poor processing accuracy and low processing efficiency in the prior art and prolongs the service life of the saw blade.

[0005] The technical solution of the present invention is as follows: A composite vibration gradient ultrasonic sawing machine comprises a bed, a support seat, a workbench, a clamping device, a positioning device, a sawtooth tool, a control system and a cooling system; one end of the sawtooth tool is connected to a swing mechanism, and the sawtooth tool reciprocates laterally above the bed through the swing mechanism, and the other end of the sawtooth tool is connected to a transverse ultrasonic generator to form a transverse vibration unit, and a longitudinal ultrasonic generator and a column are arranged in the longitudinal direction of the sawtooth tool, the working end of the longitudinal ultrasonic generator is connected to the sawtooth tool to form a longitudinal vibration unit, and the fixed end of the longitudinal ultrasonic generator is connected to one side of the column; one end of the column is connected to the sawtooth tool, and the other end of the column is connected to a saw frame, and the side of the saw frame is connected to a saw beam, and one end of the saw beam is hinged on the support seat.

[0006] The sawtooth cutter and the swing mechanism are connected via a fixed rod, and the end of the fixed rod is hinged on the support seat via a support shaft.

[0007] The swing mechanism includes a motor, a disc and a rocker arm. The motor is fixed on the bed, the output end of the motor is connected to the disc, a rocker column is provided on the disc surface, a through groove is provided along the rod body of the rocker arm, the rocker arm is movably mounted on the rocker column through the through groove, and arc gear teeth are provided on the end of the rocker arm; fixed rod gear teeth are transversely provided on the fixed rod, and the fixed rod gear teeth are meshed with the arc gear teeth of the rocker arm.

[0008] The transverse ultrasonic generator is connected with the sawtooth cutter in sequence through the amplitude rod and the coupling.

[0009] A variable amplitude rod is arranged between the longitudinal ultrasonic generator and the sawtooth cutter, a transverse through slot is arranged on the sawtooth cutter, and the working end of the longitudinal ultrasonic generator is movably connected to the transverse through slot through an adjusting bolt.

[0010] There are two columns, forming a horizontal double-column structure.

[0011] The sawtooth tool is a gradual saw blade, and the tooth shape of the gradual saw blade changes in a periodic and regular manner.

[0012] The tooth spacing of the saw blade gradually increases from the tooth tip to the tooth root; the tooth angle of the gradual saw blade gradually increases from the tooth tip to the tooth root.

[0013] The tooth angle in the tooth tip area is 20°-25°, the tooth angle in the tooth middle area is 25°-30°, and the tooth angle in the tooth root area is 30°-35°.

[0014] The tooth spacing of the tooth tip part is 0.3mm to 0.5mm, and the tooth spacing of the tooth root part is 1.0mm to 1.5mm.

[0015] Advantages and effects of the present invention: 1. The present invention adopts an ultrasonic composite vibration system that couples transverse vibration and longitudinal vibration. The ultrasonic vibration generator excites the saw blade or cutting tool through high-frequency ultrasonic waves to generate high-frequency micro-vibration on a microscopic scale. Combining transverse vibration and longitudinal vibration, the saw blade is subjected to vibration from two directions at the same time during the cutting process. The micro-vibration can effectively reduce the friction between the saw blade and the material, reduce the cutting force, improve the cutting efficiency, reduce the heat generated by cutting, avoid cracks caused by overheating of the material, and enhance the self-cleaning effect of the saw blade to prevent the material from accumulating on the saw teeth. The ultrasonic composite vibration system forms a multi-dimensional vibration effect through the synergistic effect of different frequencies and vibration directions. Specifically, the transverse vibration unit: a group of ultrasonic vibration generators and drivers are used to transmit high-frequency transverse vibration to the saw blade. This transverse vibration can effectively improve the friction between the saw blade and the material surface, reduce the cutting resistance, and reduce the heat load of the saw blade; the longitudinal vibration unit: a longitudinal vibration device is set on the column part of the sawing machine to generate longitudinal high-frequency vibration perpendicular to the transverse vibration. The longitudinal vibration can effectively improve the contact force distribution between the saw blade and the material, enhance the crushing of the material during the cutting process, and reduce the resistance of the saw blade. This effect can significantly improve the efficiency and quality of the cutting process, especially when cutting brittle or difficult-to-process materials, and can effectively reduce the risk of thermal cracking and fragmentation of the material; it can reduce friction and cutting force during the cutting process, thereby improving cutting efficiency.

[0016] 2. The frequency and amplitude of the lateral and longitudinal vibrations are adjusted in real time through the intelligent control system, so that under different cutting conditions (such as cutting of different hardness and different materials), the system can automatically optimize the vibration mode to ensure the best cutting effect at all times.

[0017] 3. It not only reduces the friction between the saw blade and the material in traditional cutting, but also effectively improves the fracture characteristics of the material, especially when cutting brittle materials (such as ceramics, glass, etc.), it can effectively reduce the fracture stress of the material and improve the cutting quality. On this basis, the combination of this horizontal and vertical composite ultrasonic vibration can significantly reduce the friction and cutting resistance generated during the cutting process, making the mechanical action between the saw blade and the workpiece more uniform, avoiding the limitation of single-direction vibration, and thus achieving efficient and smooth cutting. The superposition of horizontal vibration and vertical vibration can effectively reduce the friction during the cutting process and reduce the generation of cutting heat, thereby extending the service life of the saw blade and improving cutting accuracy.

[0018] 4. The tooth shape of the gradual saw blade structure of the present invention gradually transitions from fine cutting to rough cutting. Specifically, the front half of the saw blade has a smaller tooth spacing, which is suitable for fine cutting; the tooth spacing in the back half gradually increases, which is suitable for large-scale, high-efficiency cutting. This gradual design makes the cutting load more evenly distributed, reducing the uneven pressure and vibration in material cutting. In addition, the tooth angle gradually changes from the tip to the root of the saw blade: the smaller tooth angle allows the saw blade to quickly enter the material during the cutting process and reduce the cutting resistance. The design of a small tooth angle helps to improve the cutting accuracy and make the cutting surface smoother. As the tooth angle increases in the middle area of ​​the tooth, the cutting stability is improved, and the transmission of cutting force is more uniform, which is suitable for cutting materials of medium hardness while maintaining a high cutting efficiency. The tooth angle of the root part is the largest, which increases the transmission efficiency of the cutting force and helps to quickly cut a large area of ​​material. A larger tooth angle helps to reduce cutting resistance and increase cutting speed during rough cutting. At the same time, the combined use of gradient saw blades and ultrasonic composite vibration can effectively improve the mechanical action during the cutting process, making the cutting force more evenly distributed, reducing the problems of uneven vibration and material adhesion caused by traditional saw blade designs, thereby improving the cutting effect and the service life of the saw blade; in addition, during the cutting process, the saw blade can clean itself to prevent material from adhering to the teeth, reduce blockage, and thus maintain cutting efficiency.

[0019] 5. The present invention adopts a horizontal double-column structure to provide a more stable support system, ensuring that the sawing machine is not affected by uneven vibration during the cutting process. The double-column design can effectively reduce the impact of the horizontal and vertical composite vibration on the machine tool structure, ensuring the accuracy and stability during the cutting process. The structure also supports more precise vibration control and saw blade movement, and can continue to operate stably under complex working conditions, ensuring that each cut can achieve the expected accuracy. The double-column structure enhances the stability of the sawing machine, reduces the system vibration caused by composite vibration, makes the cutting more precise and stable, and improves the working reliability of the overall equipment.

[0020] Summary, improve cutting efficiency: The composite vibration system (combination of transverse and longitudinal vibration) greatly reduces the friction during cutting and increases the cutting speed, especially showing a significant efficiency improvement when cutting hard materials.

[0021] Improve cutting quality: The combination of gradient saw blade tooth design and ultrasonic technology effectively optimizes the mechanical state during the cutting process, avoids the generation of processing defects such as burrs and cracks, and ensures a smooth cutting surface with high precision.

[0022] Extend tool life: Ultrasonic composite vibration reduces heat accumulation during the cutting process, transmits vibration evenly, greatly reduces saw blade wear and extends tool life.

[0023] Enhanced adaptability: The gradient saw blade design enables the sawing machine to adapt to the cutting requirements of different materials and hardness at the same time, expanding the application range of the equipment, especially for the cutting of special materials such as high-hardness alloys and ceramics.

[0024] Reduced energy consumption: By optimizing the vibration mode and saw blade design, the cutting efficiency and accuracy are improved, and the energy waste caused by high temperature or high friction is reduced, thereby reducing energy consumption while maintaining high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the local structure of the sawtooth tool and the composite vibration system of the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the gradual saw blade of the present invention.

[0028] In the figure, 1-control system; 2-swing mechanism; 3-lateral vibration unit; 4-serrated tool; 5-longitudinal vibration unit; 6-sleeve; 7-column; 8-saw frame; 9-saw beam; 10-movable jaw; 11-workbench; 12-positioning device; 13-motor; 14-bed; 15-clamping device; 16-support seat; 17-guide head; 18-base; 19- transverse ultrasonic generator; 20- bolt; 21- amplitude rod; 22- disc; 23- rocker; 24- coupling; 25- adjusting bolt; 26- gear teeth; 27, fixing rod; 28, supporting shaft, 29, longitudinal ultrasonic generator. DETAILED DESCRIPTION Example

[0029] like Figure 1-3 As shown, a composite vibration gradient ultrasonic sawing machine includes a bed 14, a support seat 16, a workbench 11, a clamping device 15, a positioning device 12, a sawtooth tool 4, a control system 1 and a cooling system; the base 18 is used as an integral support platform and is fixed to the ground by high-strength bolts; the bed 14 is welded or cast on the base, and a coolant reflux channel is arranged inside the bed 14, and the coolant reflux channel is connected to the workbench 11 placed on the upper part of the bed to form a closed-loop cooling system. The clamping device 15 is symmetrically installed on both sides of the bed, and the clamping device 15 includes a motor, a movable jaw 10, and a pressure sensor. The motor drives and controls the opening and closing of the movable jaw 10 to achieve the clamping and loosening of the workpiece. The clamping force of the movable jaw 10 is fed back to the control system 1 by the pressure sensor, which plays a role in accurately clamping the workpiece. The positioning device 12 is fixed on the bed, and the positioning device 12 and the clamping device 15 are linked to achieve rapid positioning of the workpiece.

[0030] The two transverse ends of the serrated tool 4 are respectively connected to the fixed rods 27, one end of the serrated tool 4 is connected to the swing mechanism 2 through the fixed rod 27, the serrated tool 4 reciprocates transversely above the bed 14 through the swing mechanism 2, and the other end of the serrated tool is connected to the transverse ultrasonic generator 19 through the coupling 24 and the amplitude rod 21 in sequence to form a transverse vibration unit 3; a longitudinal ultrasonic generator 29 and a column 7 are provided in the longitudinal direction of the serrated tool 4, a transverse through groove is provided on the serrated tool 4, and the working end of the longitudinal ultrasonic generator 29 is movably connected to the transverse through groove through an adjusting bolt 25 to form a longitudinal vibration unit 5, and the fixed end of the longitudinal ultrasonic generator is connected to one side of the column 7 through a bolt 20, and a amplitude rod is provided between the longitudinal ultrasonic generator 29 and the serrated tool 4.

[0031] The columns 7 are provided with two to form a horizontal double-column structure. One end of the columns 7 is connected to the sawtooth cutter 4, and the other end of the columns 7 is fixedly connected to the saw frame 8. The side of the saw frame 8 is connected to the saw beam 9 by bolts to ensure the firmness and stability of the saw frame 8. One end of the saw beam 9 is hinged on the support seat 16; the end of the fixed rod 27 connected to the swing mechanism is hinged on the support seat through the support shaft 28; one end of the sawing upper half composed of the columns 7, the saw frame 8, the saw beam 9, etc. is hinged to the support seat 16, and the other end is not connected to the bed, so that the sawing upper half composed of the columns 7, the saw frame 8, the saw beam 9, etc. can rotate around a single axis. When viewed from a horizontal plane, the sawing upper half can rotate to achieve the purpose of up and down movement. One end of the sleeve 6 is sleeved on the fixed rod 27, and the other end of the sleeve 6 is welded and fixed on the saw beam 9 to limit the up and down movement of the sawtooth cutter 4 itself, ensuring that the sawtooth cutter 4 can only move horizontally.

[0032] The guide head 17 is installed at the lower end of the column 7 and connected to the sawtooth tool 4. The guide head 17 has a built-in infrared sensor to monitor the relative position of the sawtooth tool 4 and the workpiece in real time, and the data is fed back to the control system 1 to correct the cutting path.

[0033] The swing mechanism includes a motor 13, a disc 22 and a swing rod 23. The motor 13 is fixed on the bed 14. The output end of the motor 13 is connected to the disc 22. A swing column is provided on the disc surface of the disc 22. A through slot is provided along the rod body of the swing rod 23. The swing rod 23 is movably mounted on the swing column through the through slot. An arc gear is provided at the end of the swing rod 23. A fixed rod gear 26 is transversely provided on the fixed rod 27. The fixed rod gear is meshed with the arc gear of the swing rod. The motor 13 drives the disc 22 located above the bed to rotate. The rotation of the disc 22 drives the swing rod 23 to swing, thereby driving the sawtooth tool 4 to reciprocate. While the sawtooth tool 4 reciprocates, the transverse ultrasonic generator and the longitudinal ultrasonic generator transmit the mechanical vibration generated by the high-frequency ultrasonic signal to the sawtooth tool 4 through the vibration transmission mechanism amplitude rod. The transverse ultrasonic generator excites the saw blade to produce a small displacement in the horizontal direction through high-frequency ultrasonic vibration (usually in the range of 20kHz to 30kHz). This lateral vibration mainly plays the role of reducing the friction between the saw blade and the material surface, thereby reducing the cutting resistance. The high-frequency micro-vibration of the lateral vibration not only reduces the contact force between the saw blade and the workpiece, but also avoids excessive heat accumulation between the material and the saw blade, reducing the heat generated during the cutting process. The longitudinal vibration is produced in a perpendicular direction to the lateral vibration, thus forming a composite vibration during the cutting process. The longitudinal vibration can effectively improve the pressure distribution at the contact point between the saw blade and the material, avoid the phenomenon of excessive local pressure, reduce the material friction during the cutting process, and thus reduce the cutting resistance. The frequency of the longitudinal vibration is generally between 10kHz and 25kHz.

[0034] The control system 1 performs real-time monitoring and adjustment to ensure that the movement of the sawtooth tool 4, the ultrasonic vibration and the swing mechanism can work in coordination.

[0035] The serrated cutter 4 is a gradual saw blade, and the tooth spacing of the saw blade gradually increases from the tooth tip to the tooth root; the tooth spacing of the tooth tip part is 0.3mm to 0.5mm, which is suitable for precision cutting and can ensure the smoothness and high precision of the cut surface. The tooth spacing of the tooth root part is 1.0mm to 1.5mm, which is suitable for rough cutting. When cutting a large area, it can quickly remove materials and improve cutting efficiency.

[0036] The tooth angle of the gradual saw blade gradually increases from the tooth tip to the tooth root; the tooth angle in the tooth tip area is 20°-25°, the tooth angle in the tooth middle area is 25°-30°, and the tooth angle in the tooth root area is 30°-35°; the tooth shape of the gradual saw blade changes in a periodic manner.

[0037] The coordination effects between the structures of the present invention are as follows: 1. The synergistic effect of the ultrasonic composite vibration system and the gradient saw blade. The combination of the ultrasonic composite vibration system (lateral and longitudinal vibration) and the gradient saw blade design can significantly improve the cutting efficiency and cutting quality, forming a powerful synergistic effect. (1) Transverse vibration and gradient saw blade: Transverse vibration uses high-frequency ultrasonic waves to excite the saw blade to produce tiny vibrations in the horizontal direction. This vibration acts on the tooth tip of the gradient saw blade, which can effectively reduce the friction between the tooth tip and the material during cutting. Since the tooth spacing at the tooth tip is small, transverse vibration can help reduce the heat and pressure concentration generated during cutting, avoiding thermal cracks caused by friction. With the gradient design, the cutting force on the tooth tip area becomes more uniform, thereby achieving smoother and more precise cutting.

[0038] (2) Longitudinal vibration and gradient saw blade: Longitudinal vibration acts on the root of the saw blade, which enhances the cutting force in the root area and reduces the adhesion of the material. The root of the gradient saw blade is designed with a larger tooth spacing, so that the longitudinal vibration can better disperse the force during cutting and avoid excessive deformation and blockage of the material. The synergistic effect of the gradient tooth shape and compound vibration makes the cutting force in the cutting process reasonably distributed, prolongs the service life of the saw blade, and keeps the cutting surface smooth and flat.

[0039] Synergy: Through the combination of horizontal and vertical composite vibration and gradient saw blade, the vibration can be evenly transmitted to the saw blade, which not only effectively reduces the heat accumulation of the material, but also reduces local excessive wear, making the cutting process more efficient and precise, and reducing tool wear, improving overall cutting performance. Compared with a separate vibration system or saw blade design, synergy can bring better cutting results and longer tool life.

[0040] 2. The synergy between the horizontal double-column structure and other components. The horizontal double-column structure mainly enhances the stability and rigidity of the sawing machine, and the combination of this mechanical structure with other technologies improves the working efficiency and cutting accuracy of the overall equipment. (1) Dual-column stability and vibration system coordination: The dual-column structure provides stronger support, which can effectively suppress unnecessary vibrations caused by ultrasonic composite vibrations and maintain the overall stability of the sawing machine. If the horizontal and vertical vibrations generated by the composite vibration system are not supported by a stable structure, they may cause uneven vibrations, thereby affecting the cutting quality. However, the dual-column structure can effectively reduce the vibration amplitude and ensure that the vibration can act on the saw blade evenly and smoothly.

[0041] (2) Structural stability and cutting accuracy: The double-column design greatly enhances the rigidity of the sawing machine, allowing it to withstand greater cutting loads without causing structural deformation. This, combined with the gradient saw blade and ultrasonic composite vibration system, further improves cutting accuracy and stability, especially when processing high-hardness or complex-shaped materials, and can maintain high-precision cutting effects and avoid errors caused by machine vibration.

[0042] Synergy: The combination of the double-column structure and the vibration system can maximize the effect of compound vibration while avoiding vibration interference caused by unstable machine tool structure. The stability of the entire equipment is greatly improved, and the cutting quality is significantly improved, especially in high-speed or high-load cutting scenarios. The synergy significantly enhances the reliability and precision of the equipment.

[0043] 3. The synergy between the intelligent control system and all components. The intelligent control system is the "brain" of the entire sawing machine. By real-time monitoring and adjusting the working status of each component, it enables various technical systems to work together to maximize the overall performance. (1) Intelligent adjustment of vibration parameters and cutting state: The intelligent control system can automatically adjust the working state of the ultrasonic composite vibration system and the saw blade according to real-time monitoring data (such as vibration frequency, temperature, pressure, etc.). For example, when cutting materials with higher hardness, the system automatically increases the horizontal and vertical vibration frequency and amplitude to provide more cutting power; when processing brittle materials, the system automatically reduces the vibration intensity to avoid material breakage. The intelligent control system can also optimize the phase of vibration to ensure that the horizontal and vertical vibrations work together to reduce unnecessary energy waste.

[0044] (2) System synergy and efficient cutting: Through real-time monitoring, the intelligent control system can dynamically adjust the working status of each component, thereby forming synergy between the components. The working mode of the ultrasonic composite vibration system is always maintained in the best state, the gradient saw blade is always in the best cutting mode, and the double-column structure always provides stable support. This intelligent adjustment ensures that each link can cooperate tacitly, thereby improving the overall cutting efficiency and accuracy.

[0045] Synergy: The intelligent control system optimizes the coordinated work of each component to maximize the interaction between all technical elements. Through precise adjustment and feedback control, it not only improves cutting efficiency and quality, but also reduces material waste and tool wear, making the operation of the entire equipment more efficient and energy-saving.

[0046] The intelligent control system of the present invention can monitor the key parameters such as the state, cutting force, temperature of the saw blade in real time, and automatically adjust the cutting mode according to the monitoring results. This not only ensures the cutting efficiency, but also avoids excessive wear of the saw blade or failures during the cutting process. The control system model selected by the present invention is Siemens SINUMERIK 828D, which is a common control system in the field of industrial automation and has functions such as multi-axis control, automatic compensation, and vibration control. It can provide powerful processing capabilities and integrate a variety of monitoring and adjustment functions, and is suitable for complex cutting and processing tasks. Its advantages include: real-time monitoring, dynamic adjustment, fault diagnosis, vibration control, and adaptive control capabilities.

[0047] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component; for those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A composite vibration gradient ultrasonic sawing machine, comprising a bed, a support seat, a workbench, a clamping device, a positioning device, a sawtooth tool, a control system and a cooling system; characterized in that: One end of the serrated tool is connected to a swinging mechanism, and the serrated tool reciprocates laterally above the bed through the swinging mechanism. The other end of the serrated tool is connected to a transverse ultrasonic generator to form a transverse vibration unit. A longitudinal ultrasonic generator and a column are provided in the longitudinal direction of the serrated tool. The working end of the longitudinal ultrasonic generator is connected to the serrated tool to form a longitudinal vibration unit, and the fixed end of the longitudinal ultrasonic generator is connected to one side of the column; one end of the column is connected to the serrated tool, and the other end of the column is connected to a saw frame, and the side of the saw frame is connected to a saw beam, and one end of the saw beam is hinged on a support seat.

2. The composite vibration gradient ultrasonic sawing machine according to claim 1, characterized in that: The sawtooth cutter and the swing mechanism are connected via a fixed rod, and the end of the fixed rod is hinged on the support seat via a support shaft.

3. The composite vibration gradient ultrasonic sawing machine according to claim 1, characterized in that: The swing mechanism includes a motor, a disc and a rocker arm. The motor is fixed on the bed, the output end of the motor is connected to the disc, a rocker column is provided on the disc surface, a through groove is provided along the rod body of the rocker arm, the rocker arm is movably mounted on the rocker column through the through groove, and arc gear teeth are provided on the end of the rocker arm; fixed rod gear teeth are transversely provided on the fixed rod, and the fixed rod gear teeth are meshed with the arc gear teeth of the rocker arm.

4. The composite vibration gradient ultrasonic sawing machine according to claim 1, characterized in that: The transverse ultrasonic generator is connected with the sawtooth cutter in sequence through the amplitude rod and the coupling.

5. The composite vibration gradient ultrasonic sawing machine according to claim 1, characterized in that: A variable amplitude rod is arranged between the longitudinal ultrasonic generator and the sawtooth cutter, a transverse through slot is arranged on the sawtooth cutter, and the working end of the longitudinal ultrasonic generator is movably connected to the transverse through slot through an adjusting bolt.

6. The composite vibration gradient ultrasonic sawing machine according to claim 1, characterized in that: There are two columns, forming a horizontal double-column structure.

7. The composite vibration gradient ultrasonic sawing machine according to claim 1, characterized in that: The sawtooth tool is a gradual saw blade, and the tooth shape of the gradual saw blade changes in a periodic and regular manner.

8. The composite vibration gradient ultrasonic sawing machine according to claim 7, characterized in that: The tooth spacing of the saw blade gradually increases from the tooth tip to the tooth root; the tooth angle of the gradual saw blade gradually increases from the tooth tip to the tooth root.

9. The composite vibration gradient ultrasonic sawing machine according to claim 8, characterized in that: The tooth angle in the tooth tip area is 20°-25°, the tooth angle in the tooth middle area is 25°-30°, and the tooth angle in the tooth root area is 30°-35°.

10. The composite vibration gradient ultrasonic sawing machine according to claim 8, characterized in that: The tooth spacing of the tooth tip part is 0.3mm to 0.5mm, and the tooth spacing of the tooth root part is 1.0mm to 1.5mm.

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