An ultrasonic machining center for brittle materials

Abstract

The present invention discloses an ultrasonic machining center for brittle materials, which includes a slide rail. A tool magazine for storing tools is provided on one side of the lifting frame. An ultrasonic transducer is provided at the position where the tool is installed on the lifting frame. An ultrasonic generator electrically connected to the ultrasonic transducer is provided on one side of the machine frame. An ultrasonic tool shank is provided at the bottom end of the ultrasonic transducer, and the tool is connected to the bottom of the ultrasonic transducer through the ultrasonic tool shank. A lubricating box is provided on the top of the slider. A lubricating wheel is rotatably provided in the lubricating box. An oil chamber is also provided in the lubricating box. The other end of the oil chamber far from the oil injection port communicates with the lubricating wheel. During the machining of the present invention, while the tool rotates for cutting, the workpiece is subjected to axial ultrasonic vibration, which changes the molecular structure, making it easier to cut and the chips easier to peel off and remove. Moreover, by providing the lubricating wheel, the slide rail can be kept lubricated, the maintenance period of the slide rail can be extended, and the slide rail can be protected to a certain extent.

Description

Technical Field

[0001] The present invention relates to a machining device, specifically an ultrasonic machining center for brittle materials. Background Art

[0002] A machining center (abbreviated as CNC, full name: Computerized Numerical Control): is a highly automated multi-functional CNC machine tool with a tool magazine and an automatic tool changer.

[0003] The existing machining center includes a machine frame and a machining table arranged on the machine frame. Above the machining table on the machine frame, there is a lifting frame that drives the tool to move up and down. On the machine frame, there are slide rails for the lifting frame to move up and down. The slide rails are fixed to the machine frame by a plurality of bolts; by moving the lifting frame up and down and moving the machining table horizontally, various machining operations can be performed on the blank material; however, the quality of machining brittle materials by traditional machining centers is poor and the machining efficiency is low; and often due to wear or rust of the slide rails, the slide rails need to be disassembled for maintenance and lubrication, resulting in frequent disassembly of the slide rails. There are many fixing bolts for the slide rails, causing high labor costs and affecting work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide an ultrasonic machining center for brittle materials to solve the above technical problems.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An ultrasonic machining center for brittle materials, including a machine frame and a machining table movably arranged on the machine frame. Above the machining table on the machine frame, there is a lifting frame that drives the tool to move up and down. On the machine frame, there are slide rails. At both the upper and lower ends of the lifting frame, there are sliders slidably connected to the slide rails. On one side of the lifting frame, there is a tool magazine for storing tools. At the place where the lifting frame is used to install the tool, there is an ultrasonic transducer. On one side of the machine frame, there is an ultrasonic generator electrically connected to the ultrasonic transducer. At the bottom end of the ultrasonic transducer, there is an ultrasonic tool shank, and the tool is connected to the bottom of the ultrasonic transducer through the ultrasonic tool shank;

[0006] On the top of the slider, there is an installation groove that penetrates through one side of the slider close to the slide rail. Inside the installation groove, a lubricating box is slidably arranged. On the slider, there is a fixing member for fixing the lubricating box. Inside the lubricating box, a lubricating wheel is rotatably arranged. Inside the lubricating box, there is also an oil cavity. On the top of the lubricating box, there is an oil filling port connected to the oil cavity. The other end of the oil cavity far from the oil filling port is connected to face the lubricating wheel. On one side of the lubricating box close to the slide rail, there is a wheel opening for the lubricating wheel to extend out and abut against the slide rail.

[0007] Preferably, a horn is provided on the ultrasonic transducer.

[0008] Preferably, the fixing member includes a long bolt, a long screw hole is penetrated through the lubricating box, a locking hole is provided on the inner wall of the bottom of the installation groove, and the long bolt is screwed into the long screw hole and the locking hole to fix the lubricating box.

[0009] Preferably, a bottom hole is provided on the inner wall of the bottom of the installation groove, and a compression spring is provided in the bottom hole.

[0010] Preferably, a driving cavity is horizontally provided at the top of the oil cavity, a rubber plug slides horizontally in the driving cavity, a driving member for driving the rubber plug to slide toward the oil cavity is provided on the lubricating wheel, and a restoring member for driving the rubber plug to slide away from the oil cavity is provided in the oil cavity.

[0011] Preferably, a fixing rod is fixed on the side of the rubber plug away from the oil cavity, a resisting plate is cross - arranged on the fixing rod, the resisting plate extends toward the lubricating wheel, a sliding groove for the horizontal sliding of the resisting plate is provided in the lubricating box, a rotating shaft rotatably connected to the lubricating box is axially provided on the lubricating wheel, the driving member includes a driving rod rotatably arranged on the rotating shaft, a fixing block for abutting against the driving rod is fixed on the side of the rotating shaft away from the oil cavity, a torsion spring for driving the driving rod to abut against the fixing block is sleeved on the rotating shaft, one end of the torsion spring is inserted into the rotating shaft, and the other end of the torsion spring is inserted into the driving rod.

[0012] Preferably, the restoring member includes a restoring spring fixed in the oil cavity, one end of the restoring spring is fixed in the oil cavity, and the other end of the restoring spring is fixed on the end face of the rubber plug close to the oil cavity.

[0013] Preferably, a sponge is filled at the opening of the oil cavity opposite to the lubricating wheel.

[0014] Preferably, the axial width of the lubricating wheel is greater than the diameter of the screw hole on the slide rail.

[0015] Preferably, the outermost end of the driving rod is located within the outer circle of the lubricating wheel.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] By arranging an ultrasonic generator, an ultrasonic transducer, and an ultrasonic tool handle on the lifting frame, during processing, while the tool rotates for cutting, the workpiece is subjected to axial ultrasonic vibration, which changes the molecular structure, making it easier to cut hard and brittle materials, and the chips are easier to peel off and remove. The horn can amplify the amplitude of the vibration and apply it to the tool; by arranging a lubricating box on the slider, a lubricating wheel is rotatably arranged on the lubricating box, the lubricating wheel continuously abuts against the slide rail and contacts the oil cavity, and when the slider slides up and down, the slide rail can be continuously lubricated, reducing the wear of the slide rail, extending the overhaul period of the slide rail, and reducing the number of disassembly times of the slide rail. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0019] Figure 1 is the schematic structural diagram of the whole of this embodiment;

[0020] Figure 2 is the exploded schematic diagram highlighting the slide rail, lubricating box and lubricating wheel of this embodiment;

[0021] Figure 3 is the cross-sectional schematic diagram highlighting the inside of the lubricating box of this embodiment;

[0022] Figure 4 is Figure 3 the enlarged schematic diagram of part A in

[0023] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0024] 1, frame; 2, processing table; 3, lifting frame; 4, slide rail; 5, slider; 6, tool magazine; 7, ultrasonic transducer; 8, ultrasonic generator; 9, ultrasonic tool shank; 10, installation groove; 11, lubricating box; 12, lubricating wheel; 13, oil cavity; 14, oil injection port; 15, wheel port; 16, horn; 17, long bolt; 18, compression spring; 19, drive cavity; 20, rubber plug; 21, drive rod; 22, fixed rod; 23, abutting plate; 24, chute; 25, rotating shaft; 26, fixed block; 27, torsion spring; 28, return spring; 29, sponge. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1-4, the present invention provides a technical solution: an ultrasonic machining center for brittle materials, including a machine frame 1 and a machining table 2 movably arranged on the machine frame 1. Above the machining table 2 on the machine frame 1, there is a lifting frame 3 that drives the tool to move up and down. On the machine frame 1, there is a slide rail 4. At the upper and lower ends of the lifting frame 3, there are sliders 5 slidably connected to the slide rail 4. On one side of the lifting frame 3, there is a tool magazine 6 for storing tools. At the place where the lifting frame 3 is used to install the tool, there is an ultrasonic transducer. On one side of the machine frame 1, there is an ultrasonic generator 8 electrically connected to the ultrasonic transducer. At the bottom end of the ultrasonic transducer, there is an ultrasonic tool shank 9, and the tool is connected to the bottom of the ultrasonic transducer through the ultrasonic tool shank 9;

[0027] On the top of the slider 5, there is an installation groove 10. The installation groove 10 penetrates through one side of the slider 5 close to the slide rail 4. Inside the installation groove 10, a lubricating box 11 is slidably arranged. On the slider 5, there is a fixing member for fixing the lubricating box 11. Inside the lubricating box 11, a lubricating wheel 12 is rotatably arranged (it should be noted that inside the lubricating box 11, there is a rotating groove for the lubricating wheel 12 to rotate). Inside the lubricating box 11, there is also an oil cavity 13. On the top of the lubricating box 11, there is an oil filling port 14 communicating with the oil cavity 13 (when the oil filling port 14 is not in use, there is a sealing plug). The other end of the oil cavity 13 far from the oil filling port 14 communicates with the side opposite to the lubricating wheel 12. On one side of the lubricating box 11 close to the slide rail 4, there is a wheel port 15 for the lubricating wheel 12 to extend out and abut against the slide rail 4.

[0028] Specifically, a horn 16 is provided on the ultrasonic transducer. Setting the horn 16 can amplify the vibration amplitude and apply it to the tool.

[0029] Specifically, the fixing member includes a long bolt 17. The lubricating box 11 is provided with a long screw hole penetrating through it, and the inner wall of the bottom of the installation groove 10 is provided with a locking hole. The long bolt 17 is screwed into the long screw hole and the locking hole to fix the lubricating box 11. In this way, the disassembly and assembly of the lubricating box 11 can be facilitated.

[0030] Specifically, the inner wall of the bottom of the installation groove 10 is provided with a bottom hole, and a compression spring 18 is arranged in the bottom hole, which is convenient for taking out the lubricating box 11 after loosening the long bolt 17.

[0031] Specifically, a driving cavity 19 is horizontally arranged at the top of the oil cavity 13. Inside the driving cavity 19, a rubber plug 20 slides horizontally. On the lubricating wheel 12, there is a driving member for driving the rubber plug 20 to slide towards the oil cavity 13 side, and inside the oil cavity 13, there is a restoring member for driving the rubber plug 20 to slide away from the oil cavity 13 side.

[0032] Specifically, a fixing rod 22 is fixed on the side of the rubber plug 20 away from the oil chamber 13. A pressing plate 23 is cross - arranged on the fixing rod 22. The pressing plate 23 extends towards the lubricating wheel 12. A sliding groove 24 for the horizontal sliding of the pressing plate 23 is arranged in the lubricating box 11 (when the fixing rod 22 is in the initial state, the end of the fixing rod 22 away from the oil chamber 13 abuts against the inner wall of the side of the sliding groove 24 away from the oil chamber 13). An axis 25 rotatably connected to the lubricating box 11 is arranged axially on the lubricating wheel 12. The driving member includes a driving rod 21 rotatably arranged on the axis 25 (the axial depth of the rotating groove is greater than that of the lubricating wheel 12, providing space for the driving rod 21 to rotate). A fixing block 26 for abutting against the driving rod 21 is fixed on the side of the axis 25 away from the oil chamber 13. A torsion spring 27 for driving the driving rod 21 to abut against the fixing block 26 is sleeved on the axis 25. One end of the torsion spring 27 is inserted on the axis 25, and the other end of the torsion spring 27 is inserted on the driving rod 21. In this way, when the slider 5 slides down on the slide rail 4, it will drive the lubricating wheel 12 to rotate clockwise, so that the driving rod 21 drives the pressing plate 23 to slide towards the oil chamber 13 side, thereby driving the rubber plug 20 to squeeze the oil chamber 13 and then recover. When the slider 5 slides up on the slide rail 4, it will drive the lubricating wheel 12 to rotate counterclockwise. After the driving rod 21 abuts against the pressing plate 23 and rotates, when the driving rod 21 disengages from abutting against the pressing plate 23, it will recover to abut against the fixing block 26 under the action of the torsion spring 27.

[0033] Specifically, the restoring member includes a restoring spring 28 fixed in the oil chamber 13. One end of the restoring spring 28 is fixed in the oil chamber 13, and the other end of the restoring spring 28 is fixed on the end face of the rubber plug 20 close to the oil chamber 13. After the rubber plug 20 squeezes the oil chamber 13 once, it will recover under the action of the restoring spring 28.

[0034] Specifically, a sponge 29 is filled at the opening of the oil chamber 13 opposite to the lubricating wheel 12. Injecting the lubricating oil of the oil chamber 13 into the sponge 29 will enable the lubricating wheel 12 to continuously obtain the lubricating oil on the sponge 29, and the sponge 29 continuously abuts against the lubricating wheel 12.

[0035] Specifically, the axial width of the lubricating wheel 12 is greater than the diameter of the screw hole on the slide rail 4, avoiding the rotation of the lubricating wheel 12 being affected by the screw hole on the slide rail 4.

[0036] Specifically, the outermost end of the driving rod 21 is located within the outer circle of the lubricating wheel 12, avoiding the driving rod 21 colliding with the slide rail 4 when the lubricating wheel 12 rotates.

[0037] A specific application example of this embodiment is:

[0038] When this device is in use, the high-frequency electrical signal emitted by the ultrasonic generator 8 is converted into high-frequency ultrasonic vibration by the piezoelectric ultrasonic transducer, and then the amplitude of the vibration is amplified by the horn 16 and applied to the cutting tool. The ultrasonic-driven tool cuts and separates the workpiece periodically at a certain frequency. During processing, while the cutting tool rotates for cutting, the workpiece is subjected to axial ultrasonic vibration, which changes the molecular structure, making it easier to cut and the chips easier to peel off and remove; when the lifting frame 3 moves up and down frequently, the slider 5 continuously slides on the slide rail 4. The sliding of the slider 5 causes the lubricating wheel 12 to rotate continuously. When the slider 5 slides down on the slide rail 4, it will drive the lubricating wheel 12 to rotate clockwise, drive the driving rod 21 to rotate clockwise and abut against the abutting plate 23, drive the abutting plate 23 to slide towards the oil cavity 13 side, thereby driving the rubber plug 20 to squeeze the oil cavity 13, so that the lubricating oil in the oil cavity 13 is injected onto the sponge 29. After the driving rod 21 disengages from the abutting plate 23, the rubber plug 20 will be driven to return under the action of the return spring 28. In this way, the sponge 29 will continuously hold lubricating oil, and the lubricating oil will be applied to the slide rail 4 by the rotation of the lubricating wheel 12, keeping the slide rail 4 lubricated, reducing the wear of the slide rail 4, extending the maintenance period of the slide rail 4, and reducing the number of disassembly times of the slide rail 4.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationship in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic machining center for brittle materials, comprising a machine frame (1) and a machining table (2) movably arranged on the machine frame (1). Above the machining table (2), the machine frame (1) is provided with a lifting frame (3) for driving a tool to move up and down. A slide rail (4) is arranged on the machine frame (1), and sliders (5) slidably connected to the slide rail (4) are arranged at both the upper and lower ends of the lifting frame (3). It is characterized in that: On one side of the lifting frame (3), there is a tool magazine (6) for storing tools. An ultrasonic transducer is provided at the position where the lifting frame (3) is used to install the tool. On one side of the machine frame (1), there is an ultrasonic generator (8) electrically connected to the ultrasonic transducer. At the bottom end of the ultrasonic transducer, there is an ultrasonic tool shank (9), and the tool is connected to the bottom of the ultrasonic transducer through the ultrasonic tool shank (9). On the top of the slider (5), there is an installation groove (10). The installation groove (10) penetrates through one side of the slider (5) close to the slide rail (4). A lubricating box (11) is slidably arranged in the installation groove (10). The slider (5) is provided with a fixing member for fixing the lubricating box (11). A lubricating wheel (12) is rotatably arranged in the lubricating box (11). An oil cavity (13) is also arranged in the lubricating box (11). A fuel injection port (14) communicated with the oil cavity (13) is arranged at the top of the lubricating box (11). The other end of the oil cavity (13) far from the fuel injection port (14) is communicated to face the lubricating wheel (12). On one side of the lubricating box (11) close to the slide rail (4), there is a wheel port (15) for the lubricating wheel (12) to protrude and abut against the slide rail (4). At the top of the oil cavity (13), there is a driving cavity (19) horizontally. A rubber plug (20) is horizontally slidable in the driving cavity (19). The lubricating wheel (12) is provided with a driving member for driving the rubber plug (20) to slide towards one side of the oil cavity (13). A restoring member for driving the rubber plug (20) to slide away from one side of the oil cavity (13) is arranged in the oil cavity (13). A fixing rod (22) is fixed on the side of the rubber plug (20) far from the oil cavity (13). A resisting plate (23) is cross - arranged on the fixing rod (22). The resisting plate (23) extends towards one side of the lubricating wheel (12). A sliding groove (24) for the horizontal sliding of the resisting plate (23) is arranged in the lubricating box (11). An axial rotating shaft (25) rotatably connected to the lubricating box (11) is arranged on the lubricating wheel (12). The driving member includes a driving rod (21) rotatably arranged on the rotating shaft (25). A fixing block (26) for abutting against the driving rod (21) is fixed on the side of the rotating shaft (25) far from the oil cavity (13). A torsion spring (27) for driving the driving rod (21) to abut against the fixing block (26) is sleeved on the rotating shaft (25). One end of the torsion spring (27) is inserted on the rotating shaft (25), and the other end of the torsion spring (27) is inserted on the driving rod (21). A horn (16) is arranged on the ultrasonic transducer.

2. The ultrasonic machining center for brittle materials according to claim 1, wherein: The fixing member includes a long bolt (17). A long screw hole is penetrated through the lubricating box (11). A locking hole is arranged on the inner wall of the bottom of the installation groove (10). The long bolt (17) is screwed in the long screw hole and the locking hole to fix the lubricating box (11).

3. The ultrasonic machining center for brittle materials according to claim 1, characterized in that: A bottom hole is arranged on the inner wall of the bottom of the installation groove (10), and a compression spring (18) is arranged in the bottom hole.

4. The ultrasonic machining center for brittle materials according to claim 1, characterized in that: The return member includes a return spring (28) fixed within the oil chamber (13), one end of the return spring (28) is fixed within the oil chamber (13), and the other end of the return spring (28) is fixed on the end face of the rubber plug (20) close to the oil chamber (13).

5. The ultrasonic machining center for brittle materials according to claim 1, characterized in that: A sponge (29) is filled at the opening of the oil chamber (13) opposite to the lubricating wheel (12).

6. The ultrasonic machining center for brittle materials according to claim 1, characterized in that: The axial width of the lubricating wheel (12) is greater than the diameter of the screw hole on the slide rail (4).

7. An ultrasonic machining center for brittle materials according to claim 1, characterized in that: The outermost end of the driving rod (21) is located within the outer circle of the lubricating wheel (12).

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