Conductive structure of ultrasonic spindle

Abstract

The conductive structure comprises a main shaft body, a conductive assembly and an ultrasonic machining cutter handle, and the ultrasonic machining cutter handle is arranged at one end of the main shaft body; the conductive assembly comprises a first conductive part and a second conductive part, the first conductive part is connected to the ultrasonic cutter handle close to one end of the ultrasonic machining cutter handle in an insulating mode, and the second conductive part is connected to the ultrasonic machining cutter handle in an insulating mode and makes contact with the first conductive part; the first conductive part comprises at least one conductive column, the second conductive part comprises a conductive ring, and the first conductive part is in contact with the second conductive part in a point-surface mode; contact conduction is achieved in a point and surface mode, so that the heat dissipation area of a contact point is increased, the heat dissipation efficiency is improved, overheating damage is avoided, meanwhile, the installation requirement can be lowered, and normal conduction and power supply can be achieved no matter the ultrasonic machining cutter handle is installed on the main shaft body at any angle.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ultrasonic spindles, in particular to a conductive structure of an ultrasonic spindle. BACKGROUND

[0002] An ultrasonic spindle system is generally composed of an ultrasonic generator, a transducer and an amplitude-varying rod. The ultrasonic generator converts power-frequency alternating current into high-frequency alternating current, and the transducer converts the high-frequency electric energy into mechanical vibration energy to generate ultrasonic vibration, which is used in cooperation with the spindle to process workpieces.

[0003] For example, the ultrasonic knife power supply spindle disclosed in CN110212385A is provided with an electrode contact point on the knife handle and an electrode contact point on the spindle to realize power supply for the transducer in the knife handle. However, since the electrode contact point and the electrode contact point are in point contact, the limiting piece needs to be adjusted into the corresponding notch during installation to ensure that the electrode contact point and the electrode contact point are normally connected. In addition, under the condition of high-power power supply, the contact point is prone to overheating, the heat dissipation speed of the contact point is slow, and the electrode contact point or the electrode contact point will be damaged after long-term use, which affects the normal use of the spindle. CONTENT OF THE UTILITY MODEL

[0004] The application provides a conductive structure of an ultrasonic spindle to solve the problems in the prior art. The following technical scheme is adopted:

[0005] The conductive structure of the ultrasonic spindle comprises a spindle body and an ultrasonic processing knife handle, and the ultrasonic processing knife handle is arranged at one end of the spindle body.

[0006] The conductive assembly comprises a first conductive component and a second conductive component. The first conductive component is insulatively connected to the spindle body near one end of the ultrasonic processing knife handle, and the second conductive component is insulatively connected to the ultrasonic processing knife handle and in contact with the first conductive component.

[0007] The first conductive component comprises at least one conductive column, and the second conductive component comprises a conductive ring. The first conductive component and the second conductive component are in point-to-surface contact for conductive connection.

[0008] Preferably, the first conductive component comprises a conductive ring, the second conductive component comprises a conductive ring, and the first conductive component and the second conductive component are in surface-to-surface contact for conductive connection.

[0009] Further preferably, the first conductive component and the second conductive component are further provided with mutually matched connecting parts, and the connecting parts are connected through plug-in or lap joint.

[0010] Preferably, a power supply assembly is further included, which is electrically connected with the ultrasonic machining tool holder through the conductive assembly.

[0011] Further preferably, a sealing structure is further arranged between the main shaft body and the ultrasonic machining tool holder, which is located outside the conductive assembly for sealing the conductive assembly.

[0012] Preferably, the sealing structure includes a first sealing component arranged on the main shaft body and a second sealing component arranged outside the ultrasonic machining tool holder, and a curved blocking channel is formed between the first sealing component and the second sealing component.

[0013] Preferably, the first conductive component is arranged in the main shaft body in a telescopic manner.

[0014] Preferably, the first conductive component and / or the second conductive component is provided with a heat dissipation hole.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] The first conductive component and the second conductive component are in contact through a point and a surface to increase the heat dissipation area, improve the heat dissipation efficiency, and avoid overheating and damage of the first conductive component or the second conductive component; at the same time, the installation requirements can be reduced, that is, the ultrasonic machining tool holder can be normally powered whether it is installed on the main shaft body at any angle.

[0017] Secondly, when the first conductive component and the second conductive component are in contact through a surface and a surface, the conductive power can be improved, and the heating problem during high-power power supply can be reduced.

[0018] By arranging the sealing structure outside the conductive assembly, the moisture or impurities in the external air during work can be avoided, the stable contact of the conductive assembly can be ensured, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the application;

[0020] Figure 2 is a structural schematic diagram of the ultrasonic machining tool holder of the application;

[0021] Figure 3 is a contact schematic diagram of the conductive assembly of the first embodiment of the application;

[0022] Figure 4 is a contact schematic diagram of the conductive assembly of the second embodiment of the application;

[0023] Figure 5 is a contact schematic diagram of the conductive assembly of the second embodiment of the application.

[0024] In the drawings:

[0025] 100, electrically conductive assembly, 10, first electrically conductive component, 20, second electrically conductive component, 30, connecting portion; 50, first sealing component;

[0026] 200, main shaft body, 300, power supply assembly, 400, ultrasonic machining tool handle, 500, annular protrusion. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the present application. Obviously, the embodiments described in the present application are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Embodiment 1

[0029] Reference Figures 1 to 5 , the present application is further described:

[0030] In combination Figure 1 , the electrically conductive structure of the ultrasonic spindle includes a main shaft body 200 and an ultrasonic machining tool handle 400, the ultrasonic machining tool handle 400 is arranged at one end of the main shaft body 200; wherein the ultrasonic machining tool handle 400 includes a handle, an amplitude rod, a tool, and an ultrasonic transducer arranged in the handle; the main shaft body 200 includes a housing, a driving motor, and a rotating shaft rotatably connected in the housing, and the ultrasonic machining tool handle 400 is installed on the rotating shaft.

[0031] The electrically conductive assembly 100 includes a first electrically conductive component 10 and a second electrically conductive component 20, the first electrically conductive component 10 is insulated and arranged on the main shaft body 200 close to one end of the ultrasonic machining tool handle 400, and the second electrically conductive component 20 is insulated and arranged on the ultrasonic machining tool handle 400 in contact with the first electrically conductive component 10; wherein the first electrically conductive component 10 is insulated and arranged on the rotating shaft, and in operation, the first electrically conductive component 10 and the second electrically conductive component 20 are in a relatively static state.

[0032] In combination Figure 2 and Figure 3In the embodiment, the first conductive component 10 comprises at least one conductive column, and the second conductive component 20 comprises a conductive ring; when the ultrasonic machining tool holder 400 is connected to the main shaft body 200, one end of the conductive column is in contact with one side surface of the conductive ring, and the first conductive component 10 and the second conductive component 20 are in point-to-surface contact, at this time, when the first conductive component 10 generates heat, the heat can be transmitted to the second conductive component 20.

[0033] Compared with the existing point-to-point contact conductive mode, by increasing the heat dissipation surface area, the heat dissipation efficiency of the first conductive component 10 and the second conductive component 20 during conduction is improved, and overheating damage is avoided, and since the second conductive component 20 is in surface contact with the first conductive component 10, the installation angle of the ultrasonic machining tool holder 400 does not need to be considered during installation, and the installation is more convenient.

[0034] In an embodiment not shown, the first conductive component 10 can comprise a conductive ring, and the second conductive component 20 can comprise at least one conductive column.

[0035] The first conductive component 10 and the main shaft body 200, and the second conductive component 20 and the ultrasonic machining tool holder 400 can be insulated by setting an insulating component or an insulating layer to achieve insulation effect.

[0036] The power supply assembly 300 is electrically connected to the ultrasonic machining tool holder 400 through the conductive assembly 100 to form a loop; the power supply assembly 300 comprises an ultrasonic generator.

[0037] It can be understood that the first conductive component 10 can be in communication with the ultrasonic generator through a conductive wire, and the second conductive component 20 can be in communication with the ultrasonic transducer in the ultrasonic machining tool holder through a conductive wire; when the first conductive component 10 and the second conductive component 20 are in contact, the ultrasonic generator and the ultrasonic transducer are in conduction and powered.

[0038] In an embodiment not shown, the first conductive component 10 is telescoped in the main shaft body 200; wherein an elastic conductive piece (not shown) is arranged between the first conductive component 10 and the main shaft body 200, and the elastic conductive piece can be a spring; one end of the spring abuts against the first conductive component 10, and the other end is connected to the ultrasonic generator through a conductive wire, so as to ensure that the first conductive component 10 can keep in contact with the second conductive component 20 at all times.

[0039] In an embodiment not shown, the first conductive component 10 and / or the second conductive component 20 is provided with a heat dissipation hole; the heat dissipation hole helps to improve the heat dissipation efficiency of the conductive assembly 100.

[0040] Embodiment 2

[0041] The difference between this embodiment and embodiment 1 is that the first conductive component 10 is a conductive ring, and the second conductive component 20 is a conductive ring; that is, the first conductive component 10 and the second conductive component 20 are in surface-to-surface contact.

[0042] When the ultrasonic machining tool holder is mounted on the spindle body 200, the first conductive component 10 and the second conductive component 20 are in surface-to-surface contact, thereby increasing the contact area between the first conductive component 10 and the second conductive component 20 and improving the conductive power.

[0043] In combination Figure 4 , the first conductive component 10 and the second conductive component 20 are further provided with a connecting part 30 that cooperates with each other; the connecting part 30 includes a bevel or an arc surface provided on the first conductive component 10 and the second conductive component 20, respectively, thereby increasing the contact area between the first conductive component 10 and the second conductive component 20.

[0044] In combination Figure 5 In some embodiments, the connecting part 30 includes at least one groove provided on the first conductive component 10 and at least one protrusion provided on the second conductive component 20 and cooperating with the groove; when the ultrasonic machining tool holder 400 is mounted in the spindle body 200, the protrusion is inserted into the groove, further increasing the contact area between the first conductive component 10 and the second conductive component 20.

[0045] Embodiment 3

[0046] On the basis of embodiment 1 or embodiment 2, in order to avoid the influence of external environment on the conductive assembly 100 during work (for example, dust adhering to the contact point or the contact point), in combination Figure 2 , the spindle body 200 and the ultrasonic machining tool holder 400 are further provided with a sealing structure, which is located outside the conductive assembly 100 and is used for sealing the conductive assembly 100.

[0047] During work, the sealing component can block dust or cutting fluid water vapor in the external environment from entering and adhering to the conductive assembly 100, thereby ensuring that the conductive assembly 100 can work stably and improving its service life.

[0048] The sealing structure comprises a second sealing component (not shown) arranged on the main shaft body 200 and a first sealing component 50 arranged outside the ultrasonic machining tool holder 400, and a curved blocking channel is formed between the first sealing component 50 and the second sealing component; wherein at least one annular protrusion 500 is arranged on the first sealing component 50, and an annular groove matched with the annular protrusion 500 is arranged on the second sealing component, and the two components cooperate to form a labyrinth type blocking channel to block the entry of external impurities.

Claims

1. An electrically conductive structure for an ultrasonic spindle, characterized by, The main shaft body and the ultrasonic machining tool holder, the ultrasonic machining tool holder is arranged at one end of the main shaft body; The conductive assembly includes a first conductive component and a second conductive component, the first conductive component is insulatedly connected to the main shaft body near one end of the ultrasonic machining tool holder, and the second conductive component is insulatedly connected to the ultrasonic machining tool holder and contacts the first conductive component; The first conductive component includes at least one conductive column, the second conductive component includes a conductive ring, and the first conductive component and the second conductive component contact and conduct electricity in the form of point and surface.

2. The conductive structure of an ultrasonic spindle according to claim 1, characterized in that: The first conductive component includes a conductive ring, the second conductive component includes a conductive ring, and the first conductive component and the second conductive component contact and conduct electricity in the form of surface and surface.

3. The conductive structure of an ultrasonic spindle according to claim 1 or 2, characterized in that: The first conductive component and the second conductive component are further provided with matched connecting parts, and the connecting parts are connected through insertion or lapping.

4. The conductive structure of an ultrasonic spindle according to claim 1, wherein: The power supply assembly is further provided, and the power supply assembly is electrically connected with the ultrasonic machining tool holder through the conductive assembly.

5. The conductive structure of an ultrasonic spindle according to claim 1, wherein: The main shaft body and the ultrasonic machining tool holder are further provided with a sealing structure, the sealing structure is located outside the conductive assembly, and the conductive assembly is sealed.

6. The conductive structure of an ultrasonic spindle according to claim 5, characterized in that: The sealing structure includes a first sealing component arranged on the main shaft body and a second sealing component arranged outside the ultrasonic machining tool holder, and a curved blocking channel is formed between the first sealing component and the second sealing component.

7. The conductive structure of an ultrasonic spindle according to claim 1, wherein: The first conductive component is arranged in the main shaft body in an extendable and retractable manner.

8. The conductive structure of an ultrasonic spindle according to claim 1, wherein: The first conductive component and / or the second conductive component is provided with a heat dissipation hole.

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