Ultrasonic machining device and ultrasonic machining equipment comprising same

Abstract

The ultrasonic machining device comprises a cutter handle, the cutter handle is installed on a main shaft, a conducting ring is arranged on the peripheral face of the portion, protruding out of the main shaft, of the cutter handle, a copper ring is arranged on the conducting ring, the copper ring is arranged below a cutter clamping position, and an electric connector is installed on the main shaft. The electric connector comprises a support, a conductive part in elastic contact with the copper ring is arranged at the tail end of the support, a wire passing channel is formed in the support so that a wire used for being connected with an ultrasonic power source can penetrate through the wire passing channel to be connected with the conductive part, a wire passing hole is formed in the knife handle, one end of the wire is connected with the copper ring, and the other end of the wire penetrates through the wire passing hole to be connected with the transducer in the knife handle. Therefore, the turning tool or the milling tool installed on the tool handle can achieve ultrasonic vibration, and meanwhile the turning tool and the milling tool can be rapidly replaced.

Description

Technical Field

[0001] This application discloses information related to the field of ultrasonic cutting, specifically an ultrasonic processing device and an ultrasonic processing equipment including the same. Background Technology

[0002] In the computer, communication, and consumer electronics (3C) industries, as well as the aerospace industry, turning or milling is often required for workpieces. These workpieces are primarily made of materials such as stainless steel, composite materials, or high-temperature alloys. Processing these workpieces using traditional low-speed turning techniques results in a relatively complex process and low efficiency. Some manufacturers in this industry utilize ultrasonic technology to perform turning or milling processes, significantly optimizing the process flow and efficiency, and improving workpiece quality and tool life. However, existing ultrasonic turning tools still require wired connections, leading to difficulties in installation, cumbersome tool changes, and improper tool usage. Furthermore, the complexity of ultrasonic turning prevents direct installation / application on milling machines, further complicating the turning / milling process. Utility Model Content

[0003] To overcome the problems of the prior art, according to a first aspect of this application, the object is to provide an ultrasonic processing apparatus comprising:

[0004] Tool holder, used for mounting on the spindle;

[0005] A conductive ring is used to mount on the outer circumferential surface of the portion of the tool holder protruding from the spindle. The conductive ring includes an annular conductive element for electrical connection via a wire to a transducer within the tool holder.

[0006] An electrical connector, wherein the electrical connector is provided with an elastic conductive element that abuts against an annular conductive element, the elastic conductive element being used to connect to an ultrasonic power source via a cable, and the electrical connector including a bracket for connecting a spindle.

[0007] In one embodiment, an annular limiting boss is provided on the outer peripheral surface of the tool holder, and the conductive ring abuts against the side of the limiting boss.

[0008] In another embodiment, an annular cap is provided on the side of the conductive ring facing away from the limiting boss. The annular cap abuts against the conductive ring. The outer diameter of the solid part of the tool holder on which the conductive ring is mounted is greater than or equal to the outer diameter of the solid part of the tool holder through which the conductive ring passes. The annular cap is threadedly connected to the tool holder.

[0009] In another embodiment, the hardness of the elastic conductive element is equal to or less than the hardness of the annular conductive element. The annular conductive element includes a copper ring and a plating layer disposed on the outer circumferential surface of the copper ring. The material of the copper ring includes pure copper, brass, or beryllium bronze, and the material of the plating layer includes gold or silver. The elastic conductive element includes copper or a graphite composite material containing silver or gold.

[0010] In another embodiment, the conductive ring is located between the front end face and the limiting boss, and the front end face intersects with the outer peripheral surface of the protruding portion.

[0011] In another embodiment, the outer periphery of the knife handle is provided with an annular knife-holding groove, and the limiting boss is the sidewall of the knife-holding groove.

[0012] In another embodiment, the conductive ring and the tool holder are provided with corresponding wire holes, and the annular conductive element is electrically connected to the transducer in the tool holder through a wire passing through the wire hole.

[0013] In another embodiment, the conductive ring further includes an insulating annular mounting bracket with a mounting groove, and the annular conductive element is mounted in the mounting groove.

[0014] In another embodiment, the bracket includes an annular clamp, a support portion, and an insulating mounting base for mounting an elastic conductive element. The annular clamp is used to mount on the spindle, and one end of the support portion is connected to the annular clamp, while the other end is connected to the insulating mounting base.

[0015] According to a second aspect of this application, the object is to provide an ultrasonic processing apparatus, including a spindle and an ultrasonic processing device according to a first aspect of this application, wherein a tool holder is mounted on the spindle and an electrical connector is mounted on the spindle via a bracket.

[0016] The ultrasonic machining apparatus provided in this application solves the problem of rapid tool changing on CNC machine tools when ultrasonic turning tools and milling cutters are installed, through a wireless transmission ultrasonic tool holder structure, and eliminates the need to disconnect / reconnect wires during tool changes. This ultrasonic machining apparatus achieves automatic tool changing on CNC machine tools through a side-contact electrical transmission structure composed of an electrical connector and a conductive ring, avoiding interference with the machine tool magazine and enabling rapid replacement of ultrasonic turning tools and milling cutters. Furthermore, this ultrasonic machining apparatus solves the problems of CNC ultrasonic milling cutters and ultrasonic turning tools not being usable on the same machining center and the excessive number of structures requiring disassembly / reassembly during tool changes, thereby reducing the complexity of turning and milling processes and improving overall machining efficiency. Attached Figure Description

[0017] Figure 1 A perspective view of an ultrasonic processing apparatus according to an embodiment of this application is shown;

[0018] Figure 2 It shows Figure 1A cross-sectional view of the ultrasonic processing device shown.

[0019] Figure 3 It shows Figure 2 The exploded cross-sectional view of the ultrasonic processing device shown.

[0020] In the figure, 1-spindle; 2-tool holder; 3-conductive ring; 31-annular conductive component; 4-electrical connector; 41-elastic conductive component; 5-bracket; 6-limiting boss; 7-tool slot; 8-annular clamp; 9-annular cover. Detailed Implementation

[0021] The ultrasonic lathe tool holder and machine tool disclosed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer from the following detailed description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise ratios, and are only used for the purpose of conveniently and clearly illustrating the embodiments of this utility model.

[0022] Reference Figure 1 This document shows a perspective view of an ultrasonic machining apparatus according to an embodiment of this application. The ultrasonic machining apparatus includes a tool holder 2, a conductive ring 3, and an electrical connector 4. A spindle 1 is mounted within a CNC machine tool, and the tool holder 2 is mounted to the tip of the spindle 1; specifically, the tool holder 2 protrudes at least partially from the spindle 1. A conductive ring 3 is provided on the outer circumferential surface of the portion of the tool holder 2 protruding from the spindle 1. The electrical connector 4 is mounted to the spindle 1, specifically including a bracket 5 for connection to the spindle 1. The bracket 5 includes an annular clamp 8, a support portion, and an insulating mounting base. The annular clamp 8 is arranged to surround and clamp the spindle 1 to secure itself and even the electrical connector 4 to the spindle 1. One end of the support portion is connected to the annular clamp 8, and the other end is connected to the insulating mounting base.

[0023] Reference Figure 2-3 They respectively show Figure 1 The accompanying drawings show a cross-sectional view and an exploded cross-sectional view of the ultrasonic processing apparatus of the embodiment. As can be seen from these figures, the conductive ring 3 includes an annular conductive element 31, which can be electrically connected to the transducer inside the tool holder 2 via a wire. Preferably, the conductive ring 3 further includes an insulated annular mounting bracket with mounting grooves in which the annular conductive element 31 is mounted. Preferably, the conductive ring 3 includes two annular conductive elements 31, and the corresponding annular mounting brackets have two annular mounting grooves. The two annular conductive elements 31 are respectively mounted in the two annular mounting grooves to achieve a positive and negative connection from the power supply to the transducer, ensuring stable current transmission in the circuit when energized.

[0024] On the other hand, the electrical connector 4 is provided with an elastic conductive element 41 that abuts against the annular conductive element 31. Specifically, the elastic conductive element 41 is arranged at the end of the electrical connector 4, extending elastically and to a certain extent retractably from the electrical connector 4 towards the annular conductive element 31, and the elastic conductive element 41 is electrically connected to the ultrasonic power supply on the CNC machine tool side via a cable. More specifically, the electrical connector 4 has an elastic element (not shown) inside, and the elastic conductive element 41 is connected to this elastic element. Thus, when the elastic conductive element 41 contacts the annular conductive element 31, the annular conductive element 31 can compress the elastic element in turn. The elastic element remains in a compressed state and continuously applies a repulsive force to the elastic conductive element 41, maintaining the continuous contact between the elastic conductive element 41 and the annular conductive element 31. Advantageously, this elastic contact between the elastic conductive element 41 and the annular conductive element 31 prevents the elastic conductive element 41 from being damaged during operation.

[0025] Furthermore, the annular conductive element 31 includes a copper ring and a plating layer disposed on the outer circumferential surface of the copper ring. The copper ring can be made of pure copper, brass, or beryllium bronze, while the plating layer can be made of gold or silver. On the other hand, the elastic conductive element 41 includes copper or a graphite composite material containing silver or gold. Preferably, the hardness of the elastic conductive element 41 is equal to or less than the hardness of the annular conductive element 31. This way, when the elastic conductive element 41 comes into contact with the annular conductive element 31 (especially the copper ring), the annular conductive element 31 is less prone to damage and wear, and the elastic conductive element 41 is easier to replace.

[0026] Thus, a complete electrical energy transmission path is established: ultrasonic power source – electrical connector 4 (especially the elastic conductive element 41) – conductive ring 3 (especially the annular conductive element 31, and more particularly, the copper ring) – transducer. It is conceivable that the conductive ring 3 and the tool holder 2 have corresponding wire holes (not shown), and the annular conductive element 31 is electrically connected to the transducer inside the tool holder 2 via wires passing through these holes. In this way, the transducer converts electrical energy into mechanical energy to achieve ultrasonic vibration of the turning tool or milling cutter mounted on the tool holder 2. During the rotation of the tool holder 2, this configuration ensures stable contact between the electrical connector 4 and the conductive ring 3, achieving stable conduction of the aforementioned electrical energy transmission path. Furthermore, there is no direct structural connection between the tool holder 2 and the electrical connector 4, which facilitates quick replacement of the tool holder 2, enabling the replacement of turning tools and milling cutters.

[0027] In another embodiment, the electrical connector 4 is not fixed to the spindle 1 by the annular clamp 8, but is installed to the spindle 1 by a threaded connection. In yet another embodiment, for example, if the ultrasonic processing apparatus also has a spindle box, the bracket 5 can also be installed on the spindle box. In any case, after the electrical connector 4 is installed in place using any of the above-described installation methods, it is immediately fixed relative to the tool holder 2 to maintain stable contact with the copper ring of the tool holder 2.

[0028] Continue to refer to Figure 2 The outer circumferential surface of the tool holder 2 is provided with an annular limiting boss 6. Specifically, the limiting boss 6 can be formed as the sidewall of the tool-holding groove 7 on the tool holder 2. Details about the tool-holding groove 7 will be described in detail below. The advantage of this arrangement is that it avoids the need to set other structures on the tool holder 2, that is, it does not require the development of additional structures, thereby saving costs. The conductive ring 3 abuts against the side of the limiting boss 6. On the other side of the conductive ring 3 opposite to the side of the limiting boss 6, an annular pressure cap 9 is arranged. Thus, the conductive ring 3 is installed, and in particular, clamped between the limiting boss 6 and the annular pressure cap 9. In other words, the conductive ring 3 is necessarily located between the end of the tool holder 2 that is equipped with the tool and the limiting boss 6. It is conceivable that the outer diameter of the first solid portion of the tool holder 2 used for mounting the conductive ring 3 is greater than or equal to the outer diameter of the second solid portion of the tool holder 2 through which the conductive ring 3 passes. Simultaneously, the outer diameter of the conductive ring 3 is greater than or equal to the outer diameter of the second solid portion of the tool holder 2 through which the conductive ring 3 passes. This ensures that the conductive ring 3 can smoothly pass through the second solid portion to reach the first solid portion. Preferably, the conductive ring 3 and the tool holder 2 (especially the first solid portion) are threaded or welded together to securely fix the conductive ring 3 to the tool holder 2. This indirectly ensures stable contact between the conductive ring 3 and the electrical connector 4, preventing possible displacement of the conductive ring 3 during rotation of the tool holder 2. More preferably, the annular cap 9 is also threaded together with the tool holder 2.

[0029] The outer circumferential surface of the tool holder 2 is also provided with an annular tool-holding groove 7. As described above, the limiting boss 6 forms the sidewall of the tool-holding groove 7. On the other hand, the copper ring of the annular conductive member 31 is arranged below the tool-holding groove 7. The tool-holding groove 7 is provided at this location so that the chuck can clamp onto the tool-holding groove 7 during tool changing.

[0030] This application also proposes an ultrasonic machining apparatus, which includes a spindle 1 and the aforementioned ultrasonic machining device, wherein the tool holder 2 of the ultrasonic machining device is mounted to the tip of the spindle 1, and the electrical connector 4 is mounted / fixed to the spindle 1. Furthermore, the ultrasonic machining apparatus, such as a CNC machine tool, may also be equipped with an ultrasonic power supply on the CNC machine tool side to power the transducer inside the tool holder 2.

[0031] When a tool change is needed, simply remove the tool holder 2 from the spindle 1 and install the other tool holder holding the tool. During this process, there is no need to disconnect the electrical connector 4 or the wiring, enabling convenient tool replacement. This also allows for the application of turning tools on milling machines and enables workpieces to undergo ultrasonic vibration turning and milling on the same ultrasonic machining equipment. Furthermore, in milling machining centers with rotary heads, replacing the milling cutter with a turning tool provides a more convenient working environment for adjusting the turning tool angle and is more suitable for low-speed applications. These factors all reduce the wear of the elastic conductive element 41 and the conductive ring 3.

[0032] The use of terms “first,” “second,” and “third” is not intended to indicate order or quantity; for example, a reference to a second element is not intended to limit the existence of a first element.

[0033] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] The singular forms “a,” “said,” and “the” used in this application disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0036] Unless otherwise specified, the terms "multiple" or "a plurality of" in this application disclosure and the appended claims refer to two or more.

[0037] Obviously, those skilled in the art can make various modifications and variations to the ultrasonic lathe tool holder and machine tool disclosed in this utility model without departing from the spirit and scope of this utility model. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An ultrasonic machining device characterized by comprising: The utility model relates to an ultrasonic machining device, comprising: a tool holder (2) for mounting on a spindle (1); a conductive ring (3) for mounting on the outer circumferential surface of the part of the tool holder (2) protruding from the spindle (1), wherein the conductive ring (3) comprises a ring-shaped conductive member (31) for electrically connecting a transducer in the tool holder (2) through a wire, and an electrical connector (4) provided with an elastic conductive member (41) abutting against the ring-shaped conductive member (31) for connecting an ultrasonic power supply through a cable, the electrical connector (4) comprising a support (5) for connecting to the spindle (1).

2. The ultrasonic machining device according to claim 1, characterized by The outer circumferential surface of the tool holder (2) is provided with a ring-shaped limiting boss (6), and the conductive ring (3) abuts against the side surface of the limiting boss (6).

3. The ultrasonic machining device according to claim 2, characterized by The side of the conductive ring (3) opposite to the limiting boss (6) is provided with a ring-shaped gland (9) abutting against the conductive ring (3), the outer diameter of the solid part of the tool holder (2) mounting the conductive ring (3) is greater than / equal to the outer diameter of the solid part of the tool holder (2) for the conductive ring (3) to pass through, and the ring-shaped gland (9) is threadedly connected with the tool holder (2).

4. The ultrasonic machining device according to claim 1, characterized by The hardness of the elastic conductive member (41) is equal to or less than the hardness of the ring-shaped conductive member (31), the ring-shaped conductive member (31) comprises a copper ring and a plating layer provided on the outer circumferential surface of the copper ring, the material of the copper ring comprises pure copper, brass or beryllium bronze, and the material of the plating layer comprises gold or silver; the elastic conductive member (41) comprises red copper or graphite composite material containing silver or gold.

5. The ultrasonic machining device according to claim 2, wherein The conductive ring (3) is located between the front end surface and the limiting boss (6), and the front end surface intersects with the outer circumferential surface of the protruding part.

6. The ultrasonic machining device according to claim 2, wherein The outer circumferential surface of the tool holder (2) is provided with a ring-shaped tool clamping groove (7), and the limiting boss (6) is a side wall of the tool clamping groove (7).

7. The ultrasonic machining device according to claim 1, wherein The conductive ring (3) and the tool holder (2) are provided with corresponding wire passing holes, and the ring-shaped conductive member (31) is electrically connected with the transducer in the tool holder (2) through a wire passing through the wire passing holes.

8. The ultrasonic machining device according to claim 2, wherein The conductive ring (3) further comprises an insulating ring-shaped mounting bracket provided with a mounting groove, and the ring-shaped conductive member (31) is mounted in the mounting groove.

9. The ultrasonic machining device according to claim 1, wherein The support (5) comprises a ring-shaped hoop (8) for mounting on the spindle (1), a support part connected at one end with the ring-shaped hoop (8) and at the other end with an insulating mounting seat mounting the elastic conductive member (41).

10. An ultrasonic machining device comprising a spindle (1) and an ultrasonic machining device according to any one of the preceding claims, wherein the tool holder (2) is mounted on the spindle (1), and the electrical connector (4) is mounted on the spindle (1) through the support (5).

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