Ultrasonic machining knife handle based on wireless transmission

Abstract

The utility model discloses an ultrasonic machining cutter handle based on wireless transmission, which comprises a machine tool main shaft and a cutter handle main body detachably connected with the machine tool main shaft. Electric energy is transmitted between the transmitting end coil and the receiving end coil through the electromagnetic induction principle, the transmitting end coil and the receiving end coil are matched to supply power to the ultrasonic transducer and control the ultrasonic transducer, the ultrasonic transducer and the amplitude-change pole transmit ultrasonic waves to a cutter on the cutter handle body, and ultrasonic cutting is achieved. The ultrasonic transducer in the cutter handle body is in wireless electric connection with the machine tool spindle, limitation of electric wires and conductive slip rings is avoided, use is convenient, the service life is long, the ultrasonic transducer and the amplitude-change pole are arranged in the cutter handle body, damage is not prone to occurring, the structure is more compact, and the overall shortening design of the cutter handle is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to the technical field of ultrasonic machining of tool handles based on wireless transmission. Background Art

[0002] Traditional machine tools are gradually showing their limitations when processing workpieces made of certain materials and complex shapes. For example, machining high-hardness materials is difficult, as high cutting forces can lead to severe tool wear. Brittle materials are also prone to cracking and breaking during machining.

[0003] At the same time, the application of ultrasonic technology in machining is gaining increasing attention. Ultrasonic machining utilizes the energy of ultrasonic vibrations to effectively reduce cutting forces, minimize tool wear, and improve machining quality. It is particularly suitable for machining hard and brittle materials, achieving high-precision, low-damage machining results.

[0004] The development of multi-axis machining technology has made it possible to machine complex workpieces. Multi-axis machine tools can process workpieces at multiple angles, greatly improving machining flexibility and precision. Combining ultrasonic technology with multi-axis machining has resulted in ultrasonic multi-axis machining machines.

[0005] This type of machine tool has broad application prospects in aerospace, medical equipment, electronics and other manufacturing fields. It can meet the stringent requirements of these fields for precision parts.

[0006] The overall length of the ultrasonic tool holder connected by the conventional conductive slip ring is too long, which will cause the spindle bearing to be overloaded during processing, easily causing spindle damage and shortening the spindle's service life; at the same time, the overall mass is too large, which increases the loss to the spindle and may have an adverse effect on the stability of the machine tool when the machine tool is running at high speed.

[0007] Furthermore, the transducer and horn are often welded externally, which prevents full utilization of the toolholder's internal space. This hinders the overall shortening of the toolholder and affects its overall compactness. Furthermore, this significantly increases the toolholder's length, affecting its dynamic balance during high-speed rotation.

[0008] Some ultrasonic wireless transmission toolholders use an external transmission coil, which typically requires mounting on the machine tool's spindle box with a bracket. This results in low installation precision. Because the distance between the transmitting and receiving coils must be fixed, this method is prone to deviation during installation. This can result in the coils being too far apart, or too far apart, affecting transmission efficiency and even preventing ultrasonic transmission, thus impacting workpiece machining efficiency. Summary of the Invention

[0009] The purpose of this utility model is to solve the problems in the existing technology and propose an ultrasonic machining tool handle based on wireless transmission, which can supply energy and control the ultrasonic transducer and amplitude rod inside the tool handle body through wireless power supply. The transducer and amplitude rod are arranged inside the tool handle, and the overall length of the tool handle is greatly shortened.

[0010] To achieve the above-mentioned objectives, the utility model proposes an ultrasonic machining tool holder based on wireless transmission, comprising a machine tool spindle and a tool holder body detachably connected to the machine tool spindle, the tool holder body being provided with a tool mounting portion for mounting a tool, the machine tool spindle being provided with a spindle mounting portion, the tool holder body being provided with a tool holder connecting portion adapted to the spindle mounting portion, the tool holder body being detachably connected to the spindle mounting portion via the tool holder connecting portion, a transmitting end coil being provided on one end of the machine tool spindle close to the tool holder body, a receiving end coil being provided on one end of the tool holder body close to the machine tool spindle, an ultrasonic transducer and a horn electrically connected to the receiving end coil being provided in the tool holder body.

[0011] Preferably, a transmitting end magnet is provided next to the transmitting end coil, and a receiving end magnet is provided next to the receiving end coil, and the transmitting end magnet and the receiving end magnet are ferrite soft magnetic cores.

[0012] Preferably, the machine tool spindle includes a spindle fixing portion and a rotating shaft arranged in the spindle fixing portion, the spindle mounting portion is arranged on the rotating shaft, and the transmitting end coil is arranged on the spindle fixing portion.

[0013] Preferably, a first non-metallic anti-interference mounting seat is provided on the machine tool spindle, the transmitting end coil is provided in the first non-metallic anti-interference mounting seat, a second non-metallic anti-interference mounting seat is provided on the tool handle body, and the receiving end coil is provided in the second non-metallic anti-interference mounting seat.

[0014] Preferably, the first non-metallic anti-interference mounting seat and the second non-metallic anti-interference mounting seat are both provided with coil mounting grooves, the transmitting end coil and the receiving end coil are respectively arranged in the corresponding coil mounting grooves, and a sealing cover is provided at the opening of the coil mounting groove.

[0015] Preferably, a wiring port electrically connected to the transmitting end coil is provided on a side of the first non-metallic anti-interference mounting base.

[0016] Preferably, the receiving end coil is a ring coil, and the transmitting end coil is an arc coil.

[0017] The beneficial effects of the ultrasonic machining tool handle based on wireless transmission of the present invention are as follows: the ultrasonic transducer and the amplitude variable rod are arranged inside the tool handle body, the electric energy is transmitted between the transmitting end coil and the receiving end coil through the principle of electromagnetic induction, the ultrasonic transducer is powered and controlled by the cooperation of the transmitting end coil and the receiving end coil, the ultrasonic transducer and the amplitude variable rod transmit the ultrasonic wave to the tool on the tool handle body to realize ultrasonic cutting, the ultrasonic transducer inside the tool handle body is wirelessly connected to the machine tool spindle, is not restricted by wires and conductive slip rings, is easy to use and has a long service life, the ultrasonic transducer and the amplitude variable rod are built into the tool handle body, are not easily damaged, have a more compact structure, and are conducive to the shortened design of the entire tool handle.

[0018] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of an ultrasonic machining tool handle based on wireless transmission in the utility model.

[0020] Figure 2 The utility model is a schematic diagram of the main cross-sectional structure of an ultrasonic machining tool handle based on wireless transmission.

[0021] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a machine tool spindle for ultrasonically processing a tool handle based on wireless transmission.

[0022] Figure 4 The utility model is a structural schematic diagram of a machine tool spindle for ultrasonically processing a tool handle based on wireless transmission after removing a sealing cover.

[0023] Figure 5 The utility model is a schematic diagram of the three-dimensional structure of a tool handle body of an ultrasonic processing tool handle based on wireless transmission.

[0024] Figure 6 The utility model is a schematic diagram of the cross-sectional structure of a tool handle body of an ultrasonic processing tool handle based on wireless transmission.

[0025] in:

[0026] 1-machine tool spindle; 2-tool handle body; 3-ultrasonic transducer; 11-spindle mounting portion; 12-transmitter coil; 13-transmitter magnet; 14-spindle fixing portion; 15-rotating axis; 16-first non-metallic anti-interference mounting seat; 21-tool handle connection portion; 22-receiving coil; 23-receiving magnet; 24-second non-metallic anti-interference mounting seat; 101-coil mounting slot; 102-sealing cover; 161-wiring port DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0028] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0030] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Example 1

[0031] See Figures 1-6The utility model is an ultrasonic machining tool holder based on wireless transmission, comprising a machine tool spindle 1 and a tool holder body 2 detachably connected to the machine tool spindle 1, the tool holder body 2 being provided with a tool mounting portion for mounting a tool, the machine tool spindle 1 being provided with a spindle mounting portion 11, the tool holder body 2 being provided with a tool holder connecting portion 21 adapted to the spindle mounting portion 11, the tool holder body 2 being detachably connected to the spindle mounting portion 11 via the tool holder connecting portion 21, a transmitting end coil 12 being provided on one end of the machine tool spindle 1 close to the tool holder body 2, a receiving end coil 22 being adapted to the transmitting end coil 12 being provided on the tool holder body 2 close to the machine tool spindle 1, an ultrasonic transducer 3 and a horn electrically connected to the receiving end coil 22 being provided in the tool holder body 2. In this embodiment, the ultrasonic transducer 3 and the amplitude transformer are arranged inside the tool handle body 2, and electric energy is transmitted between the transmitting end coil 12 and the receiving end coil 22 through the principle of electromagnetic induction. The ultrasonic transducer 3 is powered and controlled by the cooperation of the transmitting end coil 12 and the receiving end coil 22. The ultrasonic transducer 3 and the amplitude transformer transmit ultrasonic waves to the tool on the tool handle body 2 to realize ultrasonic cutting. The ultrasonic transducer 3 inside the tool handle body 2 is wirelessly connected to the machine tool spindle 1, which is not restricted by wires and conductive slip rings, is easy to use, and has a long service life. The ultrasonic transducer 3 and the amplitude transformer are built into the tool handle body 2, are not easily damaged, and have a more compact structure, which is conducive to the overall shortening design of the tool handle.

[0032] See Figure 4 、 Figure 6 A transmitting magnet 13 is provided next to the transmitting coil 12, and a receiving magnet 23 is provided next to the receiving coil 22. Both the transmitting magnet 13 and the receiving magnet 23 are ferrite soft magnetic cores. The magnets can increase magnetic induction and enhance the transmission signal. Example 2

[0033] See Figure 6 Based on the first embodiment, the machine tool spindle 1 includes a spindle fixing portion 14 and a rotating shaft 15 disposed within the spindle fixing portion 14. The spindle mounting portion 11 is disposed on the rotating shaft 15, and the transmitting coil 12 is disposed on the spindle fixing portion 14. The rotating shaft 15 is used to drive the tool holder body 2 and the tool to rotate. During rotation, the receiving coil 22 rotates synchronously, while the transmitting coil 12 is fixed to the spindle fixing portion 14 and remains stationary, facilitating connection of the transmitting coil 12 to a power source.

[0034] See Figure 2 、 Figure 5, a first non-metallic anti-interference mounting seat 16 is provided on the machine tool spindle 1, the transmitting end coil 12 is provided in the first non-metallic anti-interference mounting seat 16, a second non-metallic anti-interference mounting seat 24 is provided on the tool handle body 2, and the receiving end coil 22 is provided in the second non-metallic anti-interference mounting seat 24. The mounting seat of the coil is made of non-metallic anti-interference material, which reduces the mutual interference between the coil and the outside world, makes the transmission more stable, and improves the processing efficiency. The first non-metallic anti-interference mounting seat 16 is circular in design and integrated on the spindle. There will be no problem of deviation in external installation causing inconsistent distances between the transmitting coil and the receiving coil, which affects the efficiency of ultrasonic transmission.

[0035] See Figure 2 、 Figure 5 、 Figure 6 The first non-metallic anti-interference mounting base 16 and the second non-metallic anti-interference mounting base 24 are each provided with a coil mounting slot 101. The transmitting coil 12, the receiving coil 22, the receiving magnet 23, and the transmitting magnet 13 are respectively mounted in the corresponding coil mounting slots 101. Sealing covers 102 are provided at the openings of the coil mounting slots 101. Sealing covers 102 seal the coil mounting slots 101, improving sealing and protecting the transmitting coil 12, the receiving coil 22, the receiving magnet 23, and the transmitting magnet 13.

[0036] See Figure 1 The first non-metallic anti-interference mounting base 16 has a side with a connection port 161 electrically connected to the transmitting coil 12 , which is used to provide power and control for the transmitting coil 12 .

[0037] Preferably, the receiving coil 22 is a ring coil and the transmitting coil 12 is an arc coil. The transmitting coil adopts an arc design to reduce the coil volume and does not need to be arranged around the entire first non-metallic anti-interference mounting base 16, which facilitates installation and saves costs.

[0038] Working process of this utility model:

[0039] The utility model discloses an ultrasonic machining tool holder based on wireless transmission. During operation, the tool is mounted on the tool holder body 2, and the tool holder body 2 is fixed on the spindle mounting portion 11 of the machine tool spindle 1. Electric energy is transmitted between the transmitting end coil 12 and the receiving end coil 22 through the principle of electromagnetic induction. The ultrasonic transducer 3 is powered and controlled through the cooperation of the transmitting end coil 12 and the receiving end coil 22. The ultrasonic transducer 3 and the horn transmit ultrasonic waves to the tool on the tool holder body 2 to realize ultrasonic cutting.

[0040] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The electric slide rail slide, cylinder, welding machine, electric telescopic rod and internal components of the controller all adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the existing technology, and no detailed description is given here.

[0041] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present utility model. Therefore, based on the innovative concept of the present utility model, changes and modifications to the embodiments described herein, or equivalent structural or process transformations made using the contents of the present utility model specification and drawings, and direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of protection of the present utility model patent.

Claims

1. A wireless transmission-based ultrasonic machining tool holder, comprising a machine tool spindle (1) and a tool holder body (2) detachably connected to the machine tool spindle (1), wherein the tool holder body (2) is provided with a tool mounting portion for mounting a tool, and is characterized in that: The machine tool spindle (1) is provided with a spindle mounting portion (11), the tool handle body (2) is provided with a tool handle connecting portion (21) adapted to the spindle mounting portion (11), the tool handle body (2) is detachably connected to the spindle mounting portion (11) via the tool handle connecting portion (21), a transmitting end coil (12) is provided on one end of the machine tool spindle (1) close to the tool handle body (2), a receiving end coil (22) adapted to the transmitting end coil (12) is provided on one end of the tool handle body (2) close to the machine tool spindle (1), and an ultrasonic transducer (3) and an amplitude rod electrically connected to the receiving end coil (22) are provided in the tool handle body (2).

2. The ultrasonic machining tool handle based on wireless transmission according to claim 1, characterized in that: A transmitting end magnet (13) is provided next to the transmitting end coil (12), and a receiving end magnet (23) is provided next to the receiving end coil (22). The transmitting end magnet (13) and the receiving end magnet (23) are ferrite soft magnetic cores.

3. The ultrasonic machining tool handle based on wireless transmission according to claim 1, characterized in that: The machine tool spindle (1) comprises a spindle fixing portion (14) and a rotating shaft (15) arranged in the spindle fixing portion (14); the spindle mounting portion (11) is arranged on the rotating shaft (15); and the transmitting end coil (12) is arranged on the spindle fixing portion (14).

4. The ultrasonic machining tool handle based on wireless transmission according to claim 1, characterized in that: A first non-metallic anti-interference mounting seat (16) is provided on the machine tool spindle (1), the transmitting end coil (12) is provided in the first non-metallic anti-interference mounting seat (16), a second non-metallic anti-interference mounting seat (24) is provided on the tool handle body (2), and the receiving end coil (22) is provided in the second non-metallic anti-interference mounting seat (24).

5. The ultrasonic machining tool handle based on wireless transmission according to claim 4, characterized in that: The first non-metallic anti-interference mounting seat (16) and the second non-metallic anti-interference mounting seat (24) are both provided with coil mounting grooves (101); the transmitting end coil (12) and the receiving end coil (22) are respectively provided in the corresponding coil mounting grooves (101); and a sealing cover sheet (102) is provided at the opening of the coil mounting groove (101).

6. The ultrasonic machining tool handle based on wireless transmission according to claim 4, characterized in that: A wiring port (161) electrically connected to the transmitting end coil (12) is provided on a side of the first non-metallic anti-interference mounting seat (16).

7. The ultrasonic machining tool handle based on wireless transmission according to claim 1, characterized in that: The receiving end coil (22) is a ring coil, and the transmitting end coil (12) is an arc coil.

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