A seven-axis linkage micro-EDM machine tool with a swaying spindle

Abstract

The present invention relates to the technical field of micro-electro-discharge wire cutting processing, and in particular to a spindle swinging seven-axis linkage micro-electro-discharge wire cutting machine tool, including a supporting mechanism, a rotating spindle C1, a wire feeding mechanism and six working axes that are linked to each other, the working axes including a rotating axis A1, a rotating axis C2, a rotating axis W1, a linear axis X1, a linear axis Y1 and a linear axis Z1; during processing, the workpiece is processed by an electrode wire, the workpiece is clamped at one end of the rotating spindle C1 close to the electrode wire, the working axes are linked to each other, and the rotating spindle C1 swings around the linear axis X1 at a preset angle driven by the rotating axis A1. The relative position variation range of the electrode wire and the workpiece space in this application is increased; the installation of the workpiece is more convenient; the range of motion between the axes is increased, the cutting accuracy and flexibility of the machine tool are improved; the rotational inertia of the electrode wire is reduced, and the cutting flexibility is further improved.

Description

Technical Field

[0001] The present application relates to a micro-electrical discharge wire cutting processing technology, in particular to a spindle swinging seven-axis linkage micro-electrical discharge wire cutting machine tool. Background Art

[0002] The wire-cut EDM machine uses molybdenum wire or hard brass wire as the electrode wire. Under the action of high-frequency pulse voltage, it breaks through the liquid medium to form an electric spark discharge and generate heat, causing the metal on the workpiece surface to partially melt. At the same time, the cutting fluid flushes the cutting area and controls the movement of the electrode wire through the controller to form a preset shape and size on the workpiece.

[0003] When processing shaft parts with ruled surface micro-features that are often used in minimally invasive surgical instruments and micro-robot transmission systems, the relative position variation range of the electrode wire and the workpiece in conventional micro-electric spark wire cutting devices is small, and the motion range of each axis is limited, the cutting accuracy is low, and the flexibility of the machine tool is low; when using UV shaft structure processing, it is difficult to process shaft parts with complex surfaces, and when processing tiny shaft workpieces, the installation of the workpiece is also more difficult. Summary of the invention

[0004] In view of the above problems, the present application is proposed to provide a spindle swinging seven-axis linkage micro-electric spark wire cutting machine tool that overcomes the above problems or at least partially solves the above problems.

[0005] In order to solve the above problems, the embodiment of the present invention discloses a spindle swing type seven-axis linkage micro-electric spark wire cutting machine, which is used for processing workpieces with ruled surface micro-features, including a support mechanism, a rotating spindle C1, a wire feeding mechanism and six working axes that are linked to each other; the working axes include a rotating axis A1, a rotating axis C2, a rotating axis W1, a linear axis X1, a linear axis Y1 and a linear axis Z1; wherein the linear axis X1, the linear axis Y1 and the linear axis Z1 are respectively provided with a slider, and the slider slides along the central axis direction of the corresponding linear axis; the rotating axis A1, the rotating axis C2 and the rotating axis W1 are respectively provided with a rotating seat that rotates around the central axis; the linear axis Z1 and the linear axis X1 are respectively fixedly connected to the support mechanism, the linear axis Z1 is vertically set up, the linear axis Y1 is fixedly connected to the slider of the linear axis X1, and slides with the slider of the linear axis X1, and the linear axis X1, the linear axis Y1 and the linear axis Z1 are arranged perpendicular to each other;

[0006] It is characterized in that the rotating shaft A1 is fixedly connected to the slider of the linear shaft Z1 and slides with the slider of the linear shaft Z1, the rotating spindle C1 is fixedly connected to the rotating seat of the rotating shaft A1 and rotates with the rotating seat of the rotating shaft A1, the rotating shaft C2 is fixedly connected to the slider of the linear shaft Y1 and slides with the slider of the linear shaft Y1, the rotating shaft W1 is fixedly connected to the rotating seat of the wire transport mechanism and the rotating shaft C2, and rotates with the rotating seat of the rotating shaft C2;

[0007] The wire feeding mechanism is provided with an electrode wire, wherein the rotating spindle C1 is provided with a rotating seat rotating around the center line of the axis, the rotating spindle C1 is driven by a direct drive motor, and a workpiece chuck is provided at one end of the rotating seat of the rotating spindle C1 close to the wire feeding mechanism, and the electrode wire and the workpiece chuck are located in corresponding positions;

[0008] When processing is performed, the workpiece is placed in the workpiece chuck, the electrode wire processes the workpiece, and the rotating spindle C1 is driven by the rotating axis A1 to swing around the linear axis X1 at a preset angle.

[0009] Furthermore, the linear axis X1, the linear axis Y1 and the linear axis Z1 are respectively provided with slide rails parallel to the central axis for guiding the slider, and the slide rail of the linear axis Y1 is fixedly connected to the slider of the linear axis X1.

[0010] Furthermore, the supporting mechanism includes a first bracket and a base, the first bracket and the base are fixedly connected, and the slide rail connected to the linear axis Z1 is away from the end surface of the slider.

[0011] Furthermore, the rotating axis A1, the rotating axis C2, the rotating axis W1 and the rotating spindle C1 are respectively provided with an axis, and the rotating seats are respectively arranged on the axis, wherein a robotic arm is provided on a side of the rotating seat of the rotating axis A1 close to the electrode wire, and the axis of the rotating spindle C1 is connected to one end of the robotic arm of the rotating axis A1 close to the electrode wire through an interface plate.

[0012] Furthermore, a second bracket is provided on the end face of the rotating seat of the rotating axis C2 away from the linear axis Y1, a platform for installing an oil tank is provided at the bottom of the second bracket, the platform is provided with an oil tank, and the rotating axis W1 and the wire transport mechanism are fixedly connected to the second bracket.

[0013] Furthermore, the wire transport mechanism includes a wire storage wheel and a wire collecting wheel. A mechanical arm is provided at the end face of the rotating seat of the rotating shaft W1 close to the workpiece chuck. The mechanical arm rotates with the rotating seat of the rotating shaft W1. The wire storage wheel and the wire collecting wheel are respectively located on both sides of the rotating shaft W1. The two ends of the electrode wire are respectively arranged in the wire storage wheel and the wire collecting wheel, and bypass the mechanical arm of the rotating shaft W1. The wire collecting wheel rotates to keep the electrode wire in a taut state.

[0014] Furthermore, two wire conveying slots are provided at one end of the mechanical arm of the rotating axis W1 close to the workpiece chuck, and the electrode wires pass around the wire conveying slots respectively, and the electrode wires between the wire conveying slots are opposite to the workpiece.

[0015] Furthermore, the workpiece chuck is a nut.

[0016] Furthermore, when the machine tool is performing processing, the electrode wire and the workpiece are both immersed in the processing fluid in the oil tank.

[0017] Furthermore, the working axes are respectively controlled to move by DC reduction motors, and the DC reduction motors are controlled and linked by a host main control machine.

[0018] This application has the following advantages:

[0019] In the embodiments of the present application, compared with the prior art that "the relative position variation range of the electrode wire and the workpiece in space is small, and the motion range of each axis is limited, the flexibility of the machine tool is low; it is difficult to process shaft parts with complex surfaces; and it is difficult to install tiny shaft workpieces", the present application provides a solution of "a rotating spindle and six working axes driven solely by a direct-drive motor are linked to each other, and the workpiece is clamped on the rotating spindle", specifically: the rotating axis A1 is fixedly connected to the slider of the linear axis Z1 and slides with the slider of the linear axis Z1, the rotating spindle C1 is fixedly connected to the rotating seat of the rotating axis A1 and rotates with the rotating seat of the rotating axis A1, the rotating axis C2 is connected to the sliding block of the linear axis Y1 The block is fixedly connected and slides with the slider of the linear axis Y1, the rotating axis W1 and the wire feeding mechanism and the rotating seat of the rotating axis C2 are fixedly connected and rotate with the rotating seat of the rotating axis C2; an electrode wire is provided on the wire feeding mechanism, wherein the rotating spindle C1 is provided with a rotating seat rotating around the center line of the axis, the rotating spindle C1 is driven by a direct drive motor, and a workpiece chuck is provided at one end of the rotating seat of the rotating spindle C1 near the wire feeding mechanism, and the positions of the electrode wire and the workpiece chuck correspond to each other; when processing is performed, the workpiece is placed in the workpiece chuck, the electrode wire processes the workpiece, and the rotating spindle C1 is driven by the rotating axis A1 to swing around the linear axis X1 at a preset angle.

[0020] The problem of "the relative position variation range of the electrode wire and the workpiece is small, and the installation of tiny shaft workpieces is difficult" is solved by "the rotating spindle C1 swings around the linear axis X1 at a preset angle under the drive of the rotating axis A1", thereby increasing the processing range of the electrode wire and the workpiece and improving the flexibility of machine tool cutting; the problem of "the limited motion range of each axis" is solved by "six interconnected working axes", thereby increasing the motion range between the working axes and improving the flexibility of machine tool cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is a structural schematic diagram of a spindle swing type seven-axis linkage micro-electric spark wire cutting machine tool provided by an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the W axis of a spindle swing type seven-axis linkage micro-electric spark wire cutting machine tool provided in one embodiment of the present application;

[0024] Among them: linear axis Z1; rotation axis A1; rotation axis C1; rotation axis C2; linear axis Y1; linear axis X1; rotation axis W1; workpiece chuck 1; first bracket 2; base 3; oil tank 4; second bracket 5; wire storage wheel 6; wire collection wheel 7. DETAILED DESCRIPTION

[0025] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] The inventors have found through analysis of the prior art that the conventional micro-electro-spark wire cutting devices use motor control for each moving part, the relative position of the electrode wire and the workpiece varies in a small range and the movement range of each axis is limited, which results in low cutting accuracy and low flexibility of the machine tool. The UV axis structure used can only achieve small taper processing, and there are still difficulties in processing shaft parts with complex surfaces. When processing tiny shaft workpieces, the workpiece is generally clamped on a fixed structure, which is not convenient for installation. Therefore, it is necessary to improve the structure of this cutting machine tool to overcome the above defects.

[0027] It should be noted that, under the premise of no conflict, the embodiments and features in the embodiments in this application can be combined with each other, and the application can be used to cut parts with ruled curved surface micro-features in various fields, and the present invention is not limited to this. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In one embodiment of the present invention, Figure 1 As shown, the machine tool is a slow-feed wire cutting machine tool, which is used to process workpieces with ruled surface micro-features. The machine tool includes a supporting mechanism, a rotating spindle C1, a wire feeding mechanism and six working axes that are interconnected; the working axes include a rotating axis A1, a rotating axis C2, a rotating axis W1, a linear axis X1, a linear axis Y1 and a linear axis Z1; wherein, the working axes are controlled and operated by DC reduction motors respectively, and can also be replaced with higher-performance motors. The motors are controlled and linked by the upper master motor, and the master motor inputs or adjusts the position and direction of the working axis and other information in time according to the process requirements.

[0029] In one embodiment of the present invention, the linear axis X1, the linear axis Y1 and the linear axis Z1 are respectively provided with sliders, and the sliders can slide along the central axis direction of the corresponding linear axis; the rotation axis A1, the rotation axis C2 and the rotation axis W1 are respectively provided with rotating seats that rotate around the central axis; the linear axis Z1 and the linear axis X1 are respectively fixedly arranged on the supporting mechanism, the linear axis X1, the linear axis Y1 and the linear axis Z1 are arranged perpendicular to each other, the linear axis Z1 is vertically established, the linear axis Y1 is fixedly connected to the slider of the linear axis X1, and slides with the slider of the linear axis X1.

[0030] The rotating axis A1 is fixedly connected to the slider of the linear axis Z1 and slides with the slider of the linear axis Z1. The rotating spindle C1 is fixedly connected to the rotating seat of the rotating axis A1 and rotates with the rotating seat of the rotating axis A1. The rotating axis C2 is fixedly connected to the slider of the linear axis Y1 and slides with the slider of the linear axis Y1. The rotating axis W1 and the wire transport mechanism are fixedly connected to the rotating seat of the rotating axis C2 and rotate with the rotating seat of the rotating axis C2.

[0031] It should be noted that, when processing is carried out, the slider can slide freely along the central axis direction of the corresponding linear axis, and the rotating seat can rotate freely around the corresponding central axis; the six working axes operate in conjunction with each other, the movement of the slider of the linear axis Z1 drives the movement of the rotating axis A1, the rotation of the rotating seat of the rotating axis A1 drives the rotating spindle C1 to swing, the movement of the slider of the linear axis X1 drives the movement of the linear axis Y1, the movement of the slider of the linear axis Y1 drives the movement of the rotating axis C2, and the rotation of the rotating axis C2 drives the movement of the rotating axis W1, and each working axis affects each other.

[0032] In one embodiment of the present invention, the linear axis X1, the linear axis Y1 and the linear axis Z1 are respectively provided with slide rails parallel to the central axis for guiding the slider, and the slide rail of the linear axis Y1 is fixedly connected to the slider of the linear axis X1; the rotation axis A1, the rotation axis C2, the rotation axis W1 and the rotation spindle C1 are respectively provided with an axis, and the rotating seats are respectively arranged on the axis, wherein the axis is used to fix the rotating seat so that it rotates around a fixed position.

[0033] In one embodiment of the present invention, the connection between the slide rail and the slider is a trapezoidal protrusion, the slide rail is equipped with a motor and can be disassembled, and screw holes that can be used for disassembly and fixation are provided on both sides of the slide rail to facilitate inspection and replacement of internal motors and other components; the connection between the slider and the slide rail is a trapezoidal groove.

[0034] Wherein, both ends of the linear axis X1, the linear axis Y1 and the linear axis Z1 are respectively provided with limiting structures to prevent the slider from detaching from the slide rail during movement; wherein the limiting structure can be limiting blocks and limiting plates of different styles; when the linear axis X1 and the linear axis Z1 are fixedly connected to the supporting mechanism, one end of the limiting plate is away from the supporting structure; the design of the limiting block and the limiting plate can make the installation direction of the linear axis faster when installed.

[0035] In one embodiment of the present invention, the rotating seats of the rotating shaft C2, the rotating shaft A1 and the rotating shaft W1 are detachable, and the rotating seats are provided with screw holes that can be used for disassembly and fixation, so as to facilitate the inspection and replacement of components such as motors inside the rotating shafts.

[0036] In one embodiment of the present invention, the wire feeding mechanism is provided with an electrode wire, the rotating spindle C1 is provided with a rotating seat rotating around the axis centerline, the rotating spindle C1 is driven by a direct drive motor, and a workpiece chuck 1 is provided at one end of the rotating seat of the rotating spindle C1 close to the wire feeding mechanism, and the electrode wire and the workpiece chuck 1 are located correspondingly;

[0037] In one embodiment of the present invention, the rotating seat of the rotating axis A1 is provided with a robotic arm extending toward the electrode wire, and the direct drive motor of the rotating spindle is placed in the robotic arm; the axis of the rotating spindle C1 is connected to one end of the robotic arm of the rotating axis A1 close to the electrode wire through an interface plate.

[0038] It should be noted that, because the linear axis Z1 and the linear axis X1 are perpendicular to each other, the rotating spindle C1 will swing around the linear axis X1 at a preset angle driven by the rotating axis A1, and the preset angle is determined by the workpiece processing shape and is not limited here. The relatively free range of motion of the rotating spindle C1 makes the installation of the workpiece to be processed more flexible and convenient.

[0039] In one embodiment of the present invention, when processing is performed, the workpiece is placed in the workpiece chuck 1, and the electrode wire processes the workpiece; a ruled surface is a surface composed of one or several families of straight lines. In the implementation of this application, the electrode wire can be regarded as a constituent straight line of the ruled surface, and the position direction of the electrode wire is controlled by the linear axis Y1, the linear axis X1, the rotation axis C2 and the rotation axis W1, which greatly improves the spatial position change range of the electrode wire; the workpiece is connected to one end of the rotation axis main C1, and is controlled by the linear axis Z1, the rotation axis A1 and the rotation main axis C1, which also greatly improves the spatial position change range of the workpiece. The spatial position movement range of the electrode wire and the workpiece is improved, which is equivalent to enhancing the accuracy and flexibility of machine tool cutting.

[0040] In one embodiment of the present invention, when the slider of the linear axis X1 moves toward the direction of the limit plate close to the linear axis X1, the linear axis Y1 also approaches the limit plate of the linear axis X1; when the slider of the linear axis Z1 slides toward the direction of the limit plate of the linear axis Y1, the rotating axis C2 also approaches the limit plate of the linear axis Y1; when the rotating axis C2 rotates clockwise, the second bracket 5 and all structures on the second bracket 5, including the rotating axis W1, rotate clockwise accordingly; when the rotating axis W1 rotates clockwise, the mechanical arm of the rotating axis W1, which is close to the electrode wire used for cutting between the two wire conveying groove columns of the workpiece chuck 1, also rotates clockwise accordingly.

[0041] That is, the linear axis X1, the linear axis Y1, the rotation axis C2, and the rotation axis W1 cooperate with each other to change the spatial position of the electrode wire and rotate clockwise.

[0042] In one embodiment of the present invention, when the slider of the linear axis Z1 moves toward the limit plate close to the linear axis Z1, the rotation axis A1 also approaches the limit plate of the linear axis Z1; the rotation axis A1 rotates 25 degrees clockwise, and the rotation spindle C1 also rotates 25 degrees clockwise; the rotation spindle C1 rotates clockwise, and the workpiece chuck 1 and the workpiece in the workpiece chuck 1 also rotate clockwise.

[0043] That is, the linear axis Z1, the rotation axis A1 and the rotation spindle C1 cooperate with each other to change the spatial position of the workpiece and rotate clockwise.

[0044] In one embodiment of the present invention, the supporting mechanism includes a first bracket 2 and a base 3, the linear axis X1 and the base 3 are horizontally connected, the first bracket 2 and the base 3 are fixedly connected, and the slide rail connected to the linear axis Z1 is away from the end face of the slider, and the linear axis X1 is fixedly connected to the base 3. The first bracket 2 and the base 3 are used to fix the vertically established linear axis Z1.

[0045] In one embodiment of the present invention, the rotating seat of the rotating shaft C2 is fixedly connected to a second bracket 5, and a platform for installing an oil tank is provided at the bottom of the second bracket 5. The oil tank 4 is fixedly connected to the end surface of the platform away from the rotating seat, and the oil tank 4 is used to hold a processing fluid, which can be kerosene, deionized water, and emulsion; the processing fluid is a discharge medium, and also plays a role in cooling and chip removal during the processing. The rotating shaft W1 and the wire transport mechanism are placed at the top of the second bracket.

[0046] It should be noted that the positions of the rotating axis W1 , the rotating axis A1 and the wire transport mechanism are higher than the oil tank 4 , so that the mechanical arms on the rotating axis W1 and the rotating axis A1 can extend into the oil tank 4 .

[0047] In one embodiment of the present invention, the wire transport mechanism includes a wire storage wheel 8 and a wire collecting wheel 9, and the wire collecting wheel 9 is driven by a motor to perform wire collecting movement; a mechanical arm is provided at the end face of the rotating seat of the rotating shaft W1 close to the workpiece chuck 1, and the mechanical arm rotates with the rotating seat of the rotating shaft W1, and the wire storage wheel 8 and the wire collecting wheel 9 are respectively located on both sides of the rotating shaft W1, and the two ends of the electrode wire are respectively arranged in the wire storage wheel 8 and the wire collecting wheel 9, and bypass the mechanical arm of the rotating shaft W1, and the wire storage wheel 8 serves as a resistance device to keep the electrode wire in a taut state.

[0048] It should be noted that the wire storage wheel 8 and the wire collecting wheel 9 can be replaced according to the diameter and length of the electrode wire. The positions of the wire storage wheel 8 and the wire collecting wheel 9 are fixed relative to the oil tank 4, which reduces the movement inertia of the electrode wire and makes the cutting of the electrode wire more stable.

[0049] In one embodiment of the present invention, Figure 1 Two wire conveying slot columns are provided on one end of the mechanical arm of the rotating axis W1 close to the workpiece chuck 1, and the electrode wire passes around the wire conveying slot columns respectively, and the electrode wire between the two wire conveying slot columns is opposite to the workpiece.

[0050] In one embodiment of the present invention, a force sensor is provided on the side of the wire storage wheel 8 away from the wire collecting wheel 9; a guide wheel is provided on both sides of the mechanical arm of the rotating axis W1 facing the wire storage wheel 8 and the wire collecting wheel 9; a plurality of wire transport groove columns are also provided on both sides of the mechanical arm of the rotating axis W1, and the wire transport groove columns on both sides of the mechanical arm of the rotating axis W1 are used to wind and limit the electrode wire to prevent the electrode wire from deviating from its position.

[0051] The following is a winding method for the electrode wire: the electrode wire is pulled out from the wire storage wheel 8, bypasses the force sensor, then bypasses the guide wheel of the robotic arm close to the wire collecting wheel 9, then bypasses the two wire conveying groove columns on one end of the robotic arm of the rotating axis W1 close to the workpiece chuck 1, then bypasses the guide wheel close to the wire storage wheel 8, and finally is wound around the wire collecting wheel 9.

[0052] It should be noted that the center position of the line connecting the two wire conveying slot columns and the rotation center of the rotation axis W1 are on a straight line. The rotation of the rotation axis W1 drives the robot arm to rotate the electrode wire together, which greatly improves the flexibility of electrode wire cutting.

[0053] In one embodiment of the present invention, the workpiece chuck 1 is a nut. After the nut is loosened, the workpiece is placed in the nut, and then the workpiece chuck 1 is tightened to fix the workpiece.

[0054] It should be noted that the workpiece chuck 1 may also be other fixing devices.

[0055] In one embodiment of the present invention, when the machine tool is processing, the electrode wire and the workpiece are both immersed in the processing fluid in the oil tank 4 .

[0056] One of the core concepts of the embodiment of the present invention is that compared with the related art, the present application includes the following advantages: the rotating spindle C1 can swing around the linear axis X1, so that the relative position variation range of the electrode wire and the workpiece space is increased. At the same time, due to the flexible position of the rotating spindle C1, the installation of the workpiece is more convenient; the motion range between the axes is increased by the linear axis, and the cutting accuracy and flexibility of the machine tool are improved; the wire storage wheel 8 and the wire transport wheel are fixed relative to the oil tank 4, and only the rotating axis W1 rotates, which reduces the rotational inertia of the electrode wire and further improves the cutting flexibility.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of more restrictions, the elements defined by the statement "comprise one..." do not exclude the presence of other identical elements in the process, method, article or terminal device including the elements.

[0059] The above is a detailed introduction to a spindle-swinging seven-axis linkage micro-EDM machine provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A spindle swing type seven-axis linkage micro-electric spark wire cutting machine, the machine tool is used to process workpieces with ruled surface micro features, including a support mechanism, a rotating spindle C1, a wire feeding mechanism and six mutually linked working axes; the working axes include a rotating axis A1, a rotating axis C2, a rotating axis W1, a linear axis X1, a linear axis Y1 and a linear axis Z1; wherein, The linear axis X1, the linear axis Y1 and the linear axis Z1 are respectively provided with sliders, and the sliders slide along the central axis direction of the corresponding linear axis; the rotation axis A1, the rotation axis C2 and the rotation axis W1 are respectively provided with rotating seats rotating around the central axis; the linear axis Z1 and the linear axis X1 are respectively fixedly connected to the supporting mechanism, the linear axis Z1 is vertically set up, the linear axis Y1 is fixedly connected to the slider of the linear axis X1, and slides with the slider of the linear axis X1, and the linear axis X1, the linear axis Y1 and the linear axis Z1 are perpendicularly arranged to each other; It is characterized in that the rotating axis A1 is fixedly connected to the slider of the linear axis Z1 and slides with the slider of the linear axis Z1, the rotating spindle C1 is fixedly connected to the rotating seat of the rotating axis A1 and rotates with the rotating seat of the rotating axis A1, the rotating axis C2 is fixedly connected to the slider of the linear axis Y1 and slides with the slider of the linear axis Y1, the rotating axis W1 is fixedly connected to the wire transport mechanism and the rotating seat of the rotating axis C2, and rotates with the rotating seat of the rotating axis C2; The wire feeding mechanism is provided with an electrode wire, wherein the rotating spindle C1 is provided with a rotating seat rotating around the center line of the axis, the rotating spindle C1 is driven by a direct drive motor, and a workpiece chuck is provided at one end of the rotating seat of the rotating spindle C1 close to the wire feeding mechanism, and the electrode wire and the workpiece chuck are located in corresponding positions; When processing is performed, the workpiece is placed in the workpiece chuck, the electrode wire processes the workpiece, and the rotating spindle C1 is driven by the rotating axis A1 to swing around the linear axis X1 at a preset angle.

2. The spindle swing type seven-axis linkage micro-EDM machine tool according to claim 1 is characterized in that: The linear axis X1, the linear axis Y1 and the linear axis Z1 are respectively provided with a slide rail parallel to the central axis for guiding the slider, and the slide rail of the linear axis Y1 is fixedly connected to the slider of the linear axis X1.

3. The spindle swing type seven-axis linkage micro-EDM machine tool according to claim 2 is characterized in that: The support mechanism includes a first bracket and a base, the first bracket and the base are fixedly connected, and the slide rail connected to the linear axis Z1 is away from the end surface of the slider.

4. The spindle swing type seven-axis linkage micro-EDM machine tool according to claim 1, characterized in that: The rotating axis A1, the rotating axis C2, the rotating axis W1 and the rotating spindle C1 are respectively provided with an axis, and the rotating seats are respectively arranged on the axis, wherein a robotic arm is provided on a side of the rotating seat of the rotating axis A1 close to the electrode wire, and the axis of the rotating spindle C1 is connected to one end of the robotic arm of the rotating axis A1 close to the electrode wire through an interface plate.

5. The spindle swing type seven-axis linkage micro-EDM machine tool according to claim 1 is characterized in that: A second bracket is provided on the end face of the rotating seat of the rotating axis C2 away from the linear axis Y1, a platform for installing an oil tank is provided at the bottom of the second bracket, and the platform is provided with an oil tank. The rotating axis W1 and the wire transport mechanism are fixedly connected to the second bracket.

6. The main spindle swing type seven-axis linkage micro-EDM machine tool according to claim 1, characterized in that: The wire transport mechanism includes a wire storage wheel and a wire collecting wheel. A mechanical arm is provided at the end face of the rotating seat of the rotating shaft W1 close to the workpiece chuck. The mechanical arm rotates with the rotating seat of the rotating shaft W1. The wire storage wheel and the wire collecting wheel are respectively located on both sides of the rotating shaft W1. The two ends of the electrode wire are respectively arranged in the wire storage wheel and the wire collecting wheel, and bypass the mechanical arm of the rotating shaft W1. The wire collecting wheel rotates to keep the electrode wire in a taut state.

7. The main-spindle swing type seven-axis linkage micro-electric discharge wire cutting machine tool according to claim 6, characterized in that: Two wire conveying slot columns are provided at one end of the mechanical arm of the rotating axis W1 close to the workpiece chuck, and the electrode wires respectively pass around the wire conveying slot columns, and the electrode wires between the wire conveying slot columns are opposite to the workpiece.

8. The spindle swing type seven-axis linkage micro-EDM machine tool according to claim 1, characterized in that: The workpiece chuck is a nut.

9. The main-spindle swing type seven-axis linkage micro-EDM machine tool according to claim 5, characterized in that: When the machine tool is processing, the electrode wire and the workpiece are both immersed in the processing fluid in the oil tank.

10. The spindle swing type seven-axis linkage micro-EDM machine tool according to claim 1, characterized in that: The working axes are respectively controlled to move by DC reduction motors, and the DC reduction motors are controlled and linked by an upper host control machine.

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