CN-117399657-B - Ultrasonic spindle unit and numerical control machine tool

CN117399657BCN 117399657 BCN117399657 BCN 117399657BCN-117399657-B

Abstract

The invention provides an ultrasonic main shaft unit and a numerical control machine tool, wherein the ultrasonic main shaft unit comprises a body, a shaft core, a tool shank, an ultrasonic transducer, a first power supply module and a second power supply module, the tool shank is connected to one end of the shaft core, the ultrasonic transducer is arranged in the tool shank, the ultrasonic main shaft unit is provided with a first mode, a second mode and a third mode, and any two of the first ultrasonic wave in the first mode, the second ultrasonic wave in the second mode and the third ultrasonic wave in the third mode are different in amplitude and/or frequency. The ultrasonic spindle unit may further include a third power supply module so that the ultrasonic spindle unit has more processing modes. The ultrasonic spindle unit can process a workpiece through a plurality of different ultrasonic waves.

Inventors

CHEN WEI
WANG FUQUAN
HE ZHENTAO
LIU YUECAI
LUO HU

Assignees

深圳迈菲精密有限公司

Dates

Publication Date: 20260505
Application Date: 20231007

Claims (9)

1. An ultrasonic spindle unit, comprising: A body; the shaft core is partially penetrated in the body and can rotate relative to the body; the knife handle is connected with one end of the shaft core; the ultrasonic transducer is arranged in the cutter handle and is used for outputting ultrasonic waves to the cutter handle; The first power supply module is arranged in the body and is electrically connected with the ultrasonic transducer; the second power supply module is arranged in the body, is electrically connected with the ultrasonic transducer and is connected with an ultrasonic power supply; The end face limiting key is fixedly connected with the shaft core, a limiting notch is formed in the outer surface of the tool handle, and the end face limiting key is arranged in the limiting notch so that the shaft core and the tool handle can synchronously rotate; An insulating strip connected to the outer surface of the handle; the first conducting strip is connected to one side of the insulating strip, which is opposite to the knife handle, and is electrically connected with the ultrasonic transducer; The second conducting strip is connected to one side of the insulating strip, which is opposite to the knife handle, and is electrically connected with the ultrasonic transducer; the first conductive component is connected with the end face limiting key, is abutted with the first conductive strip and is conducted with the first conductive strip, and is also electrically connected with the first power supply module; the second conductive component is connected with the end face limiting key, is abutted with the second conductive strip and is mutually conducted, and is also electrically connected with the second power supply module; the ultrasonic spindle unit has a first mode, a second mode and a third mode; when the ultrasonic main shaft unit is in the first mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the first power supply module, and the ultrasonic wave output by the ultrasonic transducer is first ultrasonic wave; When the ultrasonic main shaft unit is in the second mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the second power supply module, and the ultrasonic wave output by the ultrasonic transducer is second ultrasonic wave; When the ultrasonic main shaft unit is in the third mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the first power supply module and the second power supply module, and the ultrasonic wave output by the ultrasonic transducer is third ultrasonic wave; Any two of the first ultrasonic wave, the second ultrasonic wave, and the third ultrasonic wave are different in amplitude and/or frequency.
2. The ultrasonic spindle unit of claim 1, further comprising a third power supply module mounted inside the body, the third power supply module being electrically connected to an ultrasonic transducer and the third power supply module being for connection to the ultrasonic power supply; the ultrasonic spindle unit further has a fourth mode, a fifth mode, a sixth mode, and a seventh mode; When the ultrasonic main shaft unit is in the fourth mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the third power supply module, and the ultrasonic wave output by the ultrasonic transducer is fourth ultrasonic wave; When the ultrasonic main shaft unit is in the fifth mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the first power supply module and the third power supply module, and the ultrasonic wave output by the ultrasonic transducer is fifth ultrasonic wave; when the ultrasonic main shaft unit is in the sixth mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the second power supply module and the third power supply module, and the ultrasonic wave output by the ultrasonic transducer is sixth ultrasonic wave; when the ultrasonic main shaft unit is in the seventh mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the first power supply module, the second power supply module and the third power supply module, and the ultrasonic wave output by the ultrasonic transducer is seventh ultrasonic wave; wherein any two of the first ultrasonic wave, the second ultrasonic wave, the third ultrasonic wave, the fourth ultrasonic wave, the fifth ultrasonic wave, the sixth ultrasonic wave, and the seventh ultrasonic wave are different in amplitude and/or frequency.
3. The ultrasonic spindle unit of claim 1, wherein the first power supply module comprises a first power supply coil, a first power receiving coil, the first power supply coil and the first power receiving coil being magnetically coupled; The second power supply module comprises a second power supply coil and a second power receiving coil, and the second power supply coil and the second power receiving coil are magnetically coupled.
4. The ultrasonic spindle unit of claim 3, wherein the first and second power supply modules are distributed along an axial direction of the shaft core; The first power supply coil and the first power receiving coil are distributed along the radial direction of the shaft core, the second power supply coil and the second power receiving coil are distributed along the radial direction of the shaft core, or the first power supply coil and the first power receiving coil are distributed along the axial direction of the shaft core, and the second power supply coil and the second power receiving coil are distributed along the axial direction of the shaft core.
5. The ultrasonic spindle unit according to claim 1, wherein the first conductive member includes a first fixed portion, a first movable portion, and a first elastic portion, the first movable portion is movably connected to the first fixed portion, two ends of the first elastic portion are respectively connected to the first fixed portion and the first movable portion, an elastic force of the first elastic portion is used to keep the first movable portion in contact with the first conductive strip, and the first power supply module is electrically connected to the first fixed portion or the first movable portion; the second conductive component comprises a second fixed part, a second movable part and a second elastic part, the second movable part is movably connected with the second fixed part, two ends of the second elastic part are respectively connected with the second fixed part and the second movable part, the elastic force of the second elastic part is used for enabling the second movable part to be in butt joint with the second conductive strip, and the second power supply module is electrically connected with the second fixed part or the second movable part.
6. The ultrasonic spindle unit according to claim 2, the ultrasonic spindle unit is characterized by further comprising: the conductive column is positioned in the cutter handle and is electrically connected with the ultrasonic transducer; And one end of the third conductive component is connected with the end face limiting key, the other end of the third conductive component is abutted to the conductive column and conducted with the conductive column, and the third conductive component is electrically connected with the third power supply module.
7. The ultrasonic spindle unit of claim 6, wherein the third conductive assembly comprises: A third fixing portion; The third movable part is movably connected with the third fixed part; And two ends of the third elastic part are respectively connected with the third fixed part and the third movable part, the elastic force of the third elastic part is used for enabling the third movable part to be in abutting connection with the conductive column, and the third power supply module is electrically connected with the third fixed part or the third movable part.
8. The ultrasonic spindle unit of claim 6, further comprising an insulating post inside the handle, the insulating post having a mounting channel therethrough at both ends for threading a wire therethrough, the conductive post being inserted into one of the mounting channels.
9. A numerical control machine tool comprising the ultrasonic spindle unit according to any one of claims 1 to 8.

Description

Ultrasonic spindle unit and numerical control machine tool Technical Field The invention relates to the technical field of numerical control machining equipment, in particular to an ultrasonic spindle unit and a numerical control machine tool. Background Ultrasonic processing is widely applied to processing of non-metal, hard and brittle materials which are difficult to process, and is applied to processing of micro holes and deep holes. Ultrasonic machining may be performed by an ultrasonic spindle. The ultrasonic transducer is generally arranged in the tool shank of the ultrasonic spindle and is used for enabling a tool arranged on the tool shank to vibrate under the action of ultrasonic waves, so that ultrasonic machining can be conducted on a workpiece when the tool is in contact with the workpiece. However, in the prior art, most of the ultrasonic spindles can be performed using only a single ultrasonic wave, which results in a severely limited applicable range of ultrasonic spindles. In the prior art, there is an ultrasonic spindle capable of processing by adopting two different ultrasonic waves, but the ultrasonic spindle can only realize ultrasonic processing under the two conditions of half wavelength and full wavelength, and the types of usable ultrasonic waves are still less, so that the application range of the ultrasonic spindle is still smaller. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an ultrasonic main shaft unit which can process a workpiece by adopting various ultrasonic waves and has wider application range. The invention also provides a numerical control machine tool comprising the ultrasonic spindle unit. An ultrasonic spindle unit according to an embodiment of the first aspect of the present invention includes a body; the ultrasonic spindle unit comprises a body, a spindle, a tool handle, an ultrasonic transducer, a first power supply module, a second power supply module, an ultrasonic transducer, an ultrasonic main shaft unit, a first power supply module, a second power supply module, an ultrasonic power supply module, a first mode, a second mode and a third mode, wherein the spindle is connected with the ultrasonic transducer in a penetrating mode, the ultrasonic main shaft unit is connected with one end of the spindle, the ultrasonic transducer is used for outputting ultrasonic waves to the ultrasonic transducer through the first power supply module when the ultrasonic main shaft unit is in the first mode, the ultrasonic transducer outputs ultrasonic waves, the ultrasonic power supply is used for supplying power to the ultrasonic transducer through the second power supply module when the ultrasonic main shaft unit is in the second mode, the ultrasonic power supply module is used for supplying power to the ultrasonic transducer through the second power supply module when the ultrasonic main shaft unit is in the second mode, the ultrasonic main shaft unit outputs ultrasonic waves with the same amplitude as the ultrasonic transducer, and the ultrasonic main shaft unit is not used for outputting ultrasonic waves to the ultrasonic transducer through the second power supply module or the ultrasonic main shaft unit. The ultrasonic spindle unit according to the embodiment of the first aspect of the invention has at least the following beneficial effects that the ultrasonic spindle unit can process a workpiece by adopting more than two types of ultrasonic waves, and compared with the prior art, the ultrasonic spindle unit can adopt more types of ultrasonic waves, and has wider application range. The processing effect of the cutter on the workpiece mainly depends on the frequency and the amplitude of ultrasonic waves, and as the ultrasonic spindle unit can process the workpiece by adopting various ultrasonic waves, the ultrasonic spindle unit can realize various different processing effects. According to some embodiments of the invention, the ultrasonic spindle unit further comprises a third power supply module, the third power supply module is arranged in the body and is electrically connected with the ultrasonic transducer, the third power supply module is used for being connected with the ultrasonic power supply, the ultrasonic spindle unit further comprises a fourth mode, a fifth mode, a sixth mode and a seventh mode, when the ultrasonic spindle unit is in the fourth mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the third power supply module, the ultrasonic wave output by the ultrasonic transducer is fourth ultrasonic wave, when the ultrasonic spindle unit is in the fifth mode, the ultrasonic power supply supplies power to the ultrasonic transducer through the first power supply module and the third power supply module, the ultrasonic wave output by the ultrasonic transducer is fifth ultrasonic wave, when the ultrasonic spindle unit