Spindle insulation device for an electrochemical machining machine tool

Abstract

The application provides a spindle insulation device of an electrochemical machining machine tool. The spindle insulation device of the electrochemical machining machine tool comprises an insulation plate arranged between an end portion of a machine tool spindle and an electrochemical machining end plate used for connecting an electrochemical machining piece, and a projection of the end portion of the machine tool spindle is located in a projection of the insulation plate in a projection plane perpendicular to an axial direction of the machine tool spindle. The spindle insulation device of the electrochemical machining machine tool of the application arranges the insulation plate between the end portion of the machine tool spindle and the electrochemical machining end plate, blocks and intercepts splashed electrolyte through the insulation plate, and avoids splashing of the electrolyte on the machine tool spindle.

Description

Technical Field

[0001] This invention relates to the field of electrolytic machine tools, and more specifically to a spindle insulation device for an electrolytic machining machine tool. Background Technology

[0002] Electrolytic machining (EMC) is a special type of machine tool that uses the principle of electrochemical anodic dissolution of metal in an electrolyte to shape workpieces. During EMC, the spindle of the EMC must not be energized. However, the electrolyte can slosh and splash during machining, causing it to become energized on the spindle. Furthermore, the splashed electrolyte can corrode the spindle, affecting machining accuracy. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art. To this end, embodiments of the present invention provide a spindle insulation device for an electrochemical machining tool. This spindle insulation device has an insulating plate installed between the end of the machine tool spindle and the electrochemical machining end plate. The insulating plate blocks and intercepts splashed electrolyte, preventing electrolyte from splashing onto the machine tool spindle.

[0004] The spindle insulation device of the electrolytic machining machine tool according to an embodiment of the present invention includes an insulating plate, which is disposed between the end of the machine tool spindle and the electrolytic machining end plate. The electrolytic machining end plate is used to connect the electrolytic machining workpiece. In a projection plane orthogonal to the axial direction of the machine tool spindle, the projection of the end of the machine tool spindle is located within the projection of the insulating plate.

[0005] The spindle insulation device of the electrolytic machining machine tool in this embodiment of the invention provides an insulating plate between the end of the machine tool spindle and the electrolytic machining end plate. In a projection plane orthogonal to the axial direction of the machine tool spindle, the projection of the end of the machine tool spindle is located within the projection of the insulating plate. Therefore, the insulating plate can block and intercept the electrolyte splashed from one side of the electrolytic machining end plate, thus preventing the electrolyte from splashing onto the machine tool spindle.

[0006] In some embodiments, the insulating plate has blocking protrusions that surround the outer peripheral wall of the insulating plate circumferentially, and the blocking protrusions and the electrolytic machining end plate are arranged axially at intervals along the machine tool spindle.

[0007] In some embodiments, the blocking protrusion has an inclined surface at one end toward the electrolytic processing end plate, the inclined surface extending in a direction toward the axis of the insulating plate and inclined in a direction toward the electrolytic processing end plate.

[0008] In some embodiments, an axial end face of the insulating plate is provided with a mounting groove, the end of the machine tool spindle is located in the mounting groove, and the blocking protrusion surrounds the outer periphery of the machine tool spindle along its circumference.

[0009] In some embodiments, the spindle insulation device of the electrolytic machining tool further includes:

[0010] A first connector, one end of which is located inside the electrolytic machining end plate, and the other end of which passes through the insulating plate and extends into the machine tool spindle;

[0011] An insulating sleeve is fitted around one end of the first connector and located between the first connector and the electrolytic processing end plate.

[0012] An insulating cover plate, at least a portion of which is disposed on the insulating sleeve and closes the opening at the end of the insulating sleeve away from the machine tool spindle.

[0013] In some embodiments, the other axial end face of the insulating plate is provided with a first sealing groove, the first sealing groove being annular around the machine tool spindle in the axial direction, the first connector being located within the space formed by the first sealing groove, and one axial end face of the electrolytic machining end plate having a first sealing boss, the first sealing boss being annular around the machine tool spindle in the axial direction, the first sealing boss being embedded in the first sealing groove.

[0014] In some embodiments, the other axial end face of the electrolytic machining end plate is provided with a connecting hole and a cover plate groove. The connecting hole extends through the electrolytic machining end plate along the axial direction of the machine tool spindle. One end of the first connector and the insulating sleeve are located in the connecting hole. The cover plate groove is arranged around the connecting hole and communicates with the connecting hole. The insulating cover plate is disposed in the cover plate groove.

[0015] In some embodiments, a second sealing groove is provided on one axial end face of the insulating sleeve, the second sealing groove being annular around the axial direction of the insulating sleeve, and a second sealing boss is provided on one axial end face of the insulating cover plate, the second sealing boss being annular around the axial direction of the insulating sleeve, and the second sealing boss being embedded in the second sealing groove.

[0016] In some embodiments, the spindle insulation device of the electrolytic machining tool further includes a sealing ring disposed between the insulating cover plate and the bottom surface of the cover plate groove, and the sealing ring is axially arranged around the connecting hole.

[0017] In some embodiments, the bottom surface of the cover plate groove is provided with a mounting hole, and the spindle insulation device of the electrolytic machining tool further includes a second connector, one end of which is disposed on the insulating cover plate, and the other end of which is disposed in the mounting hole. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the spindle insulation device of an electrolytic machining tool according to an embodiment of the present invention;

[0019] Figure 2 This is a longitudinal sectional view of the spindle insulation device of the electrolytic machining tool according to an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Insulating plate; 11. Blocking protrusion; 12. Inclined surface; 13. Mounting groove; 14. First sealing groove; 2. Machine tool spindle; 3. Electrolytic machining end plate; 31. First sealing boss; 32. Connecting hole; 33. Cover plate groove; 4. First connecting piece; 5. Insulating sleeve; 51. Second sealing groove; 6. Insulating cover plate; 61. Second sealing boss; 7. Sealing ring; 8. Second connecting piece. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] The following is for reference. Figures 1-2 A spindle insulation device for an electrolytic machining tool according to an embodiment of the present invention is described.

[0024] like Figures 1-2 As shown, the spindle insulation device of the electrochemical machining tool according to an embodiment of the present invention includes an insulating plate 1. The insulating plate 1 is disposed between the end of the machine tool spindle 2 and the electrochemical machining end plate 3. The electrochemical machining end plate 3 is used to connect the electrochemically machined workpiece. In a projection plane orthogonal to the axial direction of the machine tool spindle 2, the projection of the end of the machine tool spindle 2 is located within the projection of the insulating plate 1.

[0025] like Figure 1 and Figure 2As shown, the electrolytic machining end plate 3, the insulating plate 1, and the machine tool spindle 2 are connected sequentially from left to right. The electrolytic machining end plate 3 is used to connect the electrolytically machined workpiece; preferably, the electrolytically machined workpiece is a blade or impeller, etc. The axis of the machine tool spindle 2 is in the left-right direction, and the machine tool spindle 2 can rotate around its axis to drive the insulating plate 1, the electrolytic machining end plate 3, and the electrolytically machined workpiece to rotate synchronously in the left-right direction. In a projection plane orthogonal to the left-right direction, the projection of the left end of the machine tool spindle 2 is located within the projection of the insulating plate 1. In other words, in the longitudinal sectional view of the spindle insulation device, the top of the insulating plate 1 is higher than the left end of the machine tool spindle 2, and the bottom of the insulating plate 1 is lower than the left end of the machine tool spindle 2. Preferably, in a projection plane orthogonal to the left-right direction, the projection of the electrolytic machining end plate 3 is also located within the projection of the insulating plate 1. Preferably, the cross-sections of the electrolytic machining end plate 3, the insulating plate 1, and the machine tool spindle 2 are all circular, and the electrolytic machining end plate 3, the insulating plate 1, and the machine tool spindle 2 are coaxially arranged.

[0026] Since the electrolytic machining end plate 3 is used to connect the electrolytically machined workpiece, it contains electrolyte on its left side. When the machine tool spindle 2 rotates, the electrolyte sloshes and splashes to the right. Some of the splashed electrolyte will pass over the electrolytic machining end plate 3. Because the insulating plate 1 is located between the left end of the machine tool spindle 2 and the electrolytic machining end plate 3, and the projection of the left end of the machine tool spindle 2 is within the projection of the insulating plate 1 in a projection plane orthogonal to the left and right directions, the insulating plate 1 can intercept and block the electrolyte that passes over the electrolytic machining end plate 3, thus preventing the electrolyte from splashing onto the machine tool spindle 2 and preventing the machine tool spindle 2 from becoming electrified and corroded. At the same time, because the insulating plate 1 is located between the left end of the machine tool spindle 2 and the electrolytic machining end plate 3, the charge on the electrolytic machining end plate 3 is also blocked by the insulating plate 1, preventing the charge on the electrolytic machining end plate 3 from being transferred to the machine tool spindle 2 and causing the machine tool spindle 2 to become electrified.

[0027] The spindle insulation device of the electrolytic machining machine tool in this embodiment of the invention provides an insulating plate between the end of the machine tool spindle and the electrolytic machining end plate. In a projection plane orthogonal to the axial direction of the machine tool spindle, the projection of the end of the machine tool spindle is located within the projection of the insulating plate. Therefore, the insulating plate can block and intercept the electrolyte splashed from one side of the electrolytic machining end plate, thus preventing the electrolyte from splashing onto the machine tool spindle.

[0028] In some embodiments, the insulating plate 1 has a blocking protrusion 11, which surrounds the outer peripheral wall of the insulating plate 1 along the circumference of the insulating plate 1, and the blocking protrusion 11 and the electrolytic machining end plate 3 are arranged at intervals along the axial direction of the machine tool spindle 2.

[0029] like Figure 2As shown, the right end of the insulating plate 1 has a blocking protrusion 11. The blocking protrusion 11 is provided on the outer peripheral wall surface of the insulating plate 1, and the blocking protrusion 11 is an annular ring that surrounds the circumference of the insulating plate 1, so as to intercept and block the splashing electrolyte through the blocking protrusion 11.

[0030] The blocking protrusions 11 and the electrolytic machining end plate 3 are arranged at intervals in the left-right direction; in other words, there is a gap between the blocking protrusions 11 and the electrolytic machining end plate 3. This creates an electrolyte flow channel on the outer peripheral wall of the insulating plate 1 between the blocking protrusions 11 and the electrolytic machining end plate 3. Splashed electrolyte is intercepted and blocked by the blocking protrusions 11 and falls into the electrolyte flow channel, flowing downwards along the outer peripheral wall of the insulating plate 1, and finally falling into the machine housing of the electrolytic machining machine tool. This prevents the intercepted electrolyte from flowing arbitrarily, causing environmental pollution or flowing onto the machine tool spindle 2.

[0031] In some embodiments, the blocking protrusion 11 has an inclined surface 12 at one end facing the electrolytic processing end plate 3. The inclined surface 12 extends in the direction toward the axis of the insulating plate 1 and is inclined in the direction toward the electrolytic processing end plate 3.

[0032] like Figure 1 and Figure 2 As shown, the left end face of the blocking protrusion 11 is an inclined surface 12. The inclined surface 12 extends towards the axis of the insulating plate 1 and is inclined to the left, then connects to the outer peripheral wall of the insulating plate 1. An electrolyte flow channel is formed between the inclined surface 12 and the right end face of the electrolytic processing end plate 3 on the outer peripheral wall of the insulating plate 1. The splashed electrolyte is intercepted and blocked by the inclined surface 12, and then enters the electrolyte flow channel under the inclined guidance of the inclined surface 12. Preferably, the longitudinal section of the blocking protrusion 11 is triangular. In other embodiments, the blocking protrusion 11 can also be trapezoidal, etc.

[0033] In some embodiments, an axial end face of the insulating plate 1 is provided with a mounting groove 13, the end of the machine tool spindle 2 is located in the mounting groove 13, and the blocking protrusion 11 surrounds the outer periphery of the machine tool spindle 2 along the circumference of the machine tool spindle 2.

[0034] like Figure 2 As shown, the right end face of the insulating plate 1 is provided with a mounting groove 13, and the left end of the machine tool spindle 2 is located in the mounting groove 13 so that the insulating plate 1 can be installed on the machine tool spindle 2. The blocking protrusion 11 at the right end of the insulating plate 1 surrounds the outer periphery of the left end of the machine tool spindle 2 so as to completely intercept and block the splashed electrolyte and prevent the splashed electrolyte from falling on the machine tool spindle 2.

[0035] In some embodiments, the spindle insulation device of the electrochemical machining tool according to the present invention further includes a first connector 4, an insulating sleeve 5, and an insulating cover plate 6. One end of the first connector 4 is located inside the electrochemical machining end plate 3, and the other end of the first connector 4 passes through the insulating plate 1 and extends into the machine tool spindle 2. The insulating sleeve 5 is sleeved on the outer periphery of one end of the first connector 4 and is located between the first connector 4 and the electrochemical machining end plate 3. At least a portion of the insulating cover plate 6 is disposed on the insulating sleeve 5 and closes the opening of the insulating sleeve 5 at the end away from the machine tool spindle 2.

[0036] like Figure 1 and Figure 2 As shown, the first connector 4 is preferably a bolt extending in the left-right direction. The left end of the first connector 4 is the head end of the bolt, and the right end of the first connector 4 is the threaded end of the bolt. The left end of the first connector 4 is located inside the electrolytic machining end plate 3, and the right end of the first connector 4 passes through the insulating plate 1 and extends into the threaded hole at the left end of the machine tool spindle 2, so as to connect the electrolytic machining end plate 3, the insulating plate 1 and the machine tool spindle 2 in sequence through the first connector 4.

[0037] An insulating sleeve 5 is fitted around the outer periphery of the left end of the first connector 4 and connects the first connector 4 and the electrolytic machining end plate 3. At least a portion of the insulating cover plate 6 is located at the left end of the insulating sleeve 5 to close the opening at the left end of the insulating sleeve 5, thereby enclosing the left end of the first connector 4 within the insulating sleeve 5. The insulating sleeve 5 isolates the first connector 4 from the electrolytic machining end plate 3 to prevent the charge on the electrolytic machining end plate 3 from being conducted to the machine tool spindle 2 through the first connector 4. The insulating cover plate 6 isolates the first connector 4 from the electrolyte to prevent the electrolyte on the left side of the electrolytic machining end plate 3 from contacting the first connector 4, thus preventing the charge of the electrolyte from being conducted to the machine tool spindle 2 through the first connector 4. It also prevents the electrolyte from conducting and connecting the electrolytic machining end plate 3 and the first connector 4, ensuring that the machine tool spindle 2 is not energized.

[0038] In some embodiments, the other axial end face of the insulating plate 1 is provided with a first sealing groove 14, the first sealing groove 14 is an annular ring surrounding the machine tool spindle 2 in the axial direction, the first connecting member 4 is located in the space formed by the first sealing groove 14, and one axial end face of the electrolytic machining end plate 3 is provided with a first sealing boss 31, the first sealing boss 31 is an annular ring surrounding the machine tool spindle 2 in the axial direction, and the first sealing boss 31 is embedded in the first sealing groove 14.

[0039] like Figure 1 and Figure 2As shown, the electrolytic machining end plate 3, the insulating plate 1, and the machine tool spindle 2 are coaxially arranged. The left end face of the insulating plate 1 is provided with a first sealing groove 14, which is annular around the axial direction of the insulating plate 1. The right end face of the electrolytic machining end plate 3 is provided with a first sealing boss 31, which is annular around the axial direction of the electrolytic machining end plate 3. The first sealing boss 31 is embedded in the first sealing groove 14. The first connecting piece 4 is located in the space formed by the first sealing groove 14 and also in the space formed by the first sealing boss 31. The stepped surface formed by the first sealing groove 14 and the first sealing boss 31 between the left end face of the insulating plate 1 and the right end face of the electrolytic machining end plate 3 enhances the sealing between the left end face of the insulating plate 1 and the right end face of the electrolytic machining end plate 3. This prevents the electrolyte blocked by the insulating plate 1 from extending into the first connector 4 through the gap between the left end face of the insulating plate 1 and the right end face of the electrolytic machining end plate 3, which would cause the charge of the electrolyte to be conducted to the machine tool spindle 2 through the first connector 4. It also prevents the blocked electrolyte from flowing along the first connector 4 to the machine tool spindle 2, which would cause the machine tool spindle 2 to be corroded.

[0040] In some embodiments, the other axial end face of the electrolytic machining end plate 3 is provided with a connecting hole 32 and a cover plate groove 33. The connecting hole 32 passes through the electrolytic machining end plate 3 along the axial direction of the machine tool spindle 2. One end of the first connector 4 and the insulating sleeve 5 are located in the connecting hole 32. The cover plate groove 33 is arranged around the connecting hole 32 and communicates with the connecting hole 32. The insulating cover plate 6 is provided in the cover plate groove 33.

[0041] like Figure 1 and Figure 2 As shown, the left end face of the electrolytic processing end plate 3 is provided with a connecting hole 32 and a cover plate groove 33. The connecting hole 32 penetrates the electrolytic processing end plate 3 in the left-right direction. The cover plate groove 33 is arranged around the connecting hole 32 and communicates with the connecting hole 32. Preferably, the cross-sections of the connecting hole 32 and the cover plate groove 33 are both circular.

[0042] The left end of the first connector 4 and the insulating sleeve 5 are both located within the connecting hole 32. The insulating sleeve 5 is connected between the hole wall of the connecting hole 32 and the outer peripheral wall of the first connector 4 to isolate the first connector 4 from the electrolytic processing end plate 3. The insulating cover plate 6 is located within the cover plate groove 33. The center portion of the right end of the insulating cover plate 6 is connected to the left end of the insulating sleeve 5 to close the left end opening of the insulating sleeve 5, thereby preventing the electrolyte from contacting the first connector 4 inside the insulating sleeve 5. Preferably, the left end face of the insulating cover plate 6 is flush with the left end face of the electrolytic processing end plate 3.

[0043] In some embodiments, an axial end face of the insulating sleeve 5 is provided with a second sealing groove 51, the second sealing groove 51 being annular around the axial direction of the insulating sleeve 5, and an axial end face of the insulating cover plate 6 is provided with a second sealing boss 61, the second sealing boss 61 being annular around the axial direction of the insulating sleeve 5, and the second sealing boss 61 being embedded in the second sealing groove 51.

[0044] like Figure 1 and Figure 2 As shown, the left end face of the insulating sleeve 5 is provided with a second sealing groove 51. The second sealing groove 51 is an annular ring that surrounds the circumference of the insulating sleeve 5. Preferably, the second sealing groove 51 is also formed on the outer peripheral wall of the insulating sleeve 5. The right end face of the insulating cover plate 6 is provided with a second sealing boss 61. The second sealing boss 61 is an annular ring that surrounds the circumference of the insulating sleeve 5. The second sealing boss 61 is embedded in the second sealing groove 51. On the one hand, it plays a role in firmly connecting the insulating sleeve 5 and the insulating cover plate 6 and in connection positioning. On the other hand, it improves the sealing performance of the connection between the insulating sleeve 5 and the insulating cover plate 6, and prevents the electrolyte from entering the insulating sleeve 5 through the gap between the insulating cover plate 6 and the electrolytic processing end plate 3 and through the gap at the connection between the insulating sleeve 5 and the insulating cover plate 6.

[0045] In some embodiments, the spindle insulation device of the electrolytic machining tool of the present invention further includes a sealing ring 7, which is disposed between the insulating cover plate 6 and the bottom surface of the cover plate groove 33, and the sealing ring 7 is axially arranged around the connecting hole 32.

[0046] like Figure 1 and Figure 2 As shown, the sealing ring 7 connects the right end face of the insulating cover plate 6 and the bottom surface of the cover plate groove 33. Preferably, the right end face of the insulating cover plate 6 has an annular groove for installing the sealing ring 7. The sealing ring 7 is axially arranged around the connecting hole 32. Preferably, the second sealing boss 61 is located within the space formed by the sealing ring 7. The sealing ring 7 improves the sealing performance between the insulating cover plate 6 and the bottom surface of the cover plate groove 33, preventing electrolyte from entering the insulating sleeve 5 through the gap between the insulating cover plate 6 and the electrolytic processing end plate 3.

[0047] In some embodiments, the bottom surface of the cover plate groove 33 is provided with a mounting hole, and the spindle insulation device of the electrolytic machining tool further includes a second connector 8, one end of the second connector 8 is provided on the insulating cover plate 6, and the other end of the second connector 8 is provided in the mounting hole.

[0048] like Figure 1 and Figure 2As shown, the bottom surface of the cover plate groove 33 is provided with a mounting hole, which is preferably a threaded hole. The second connector 8 is preferably a bolt. The left end of the second connector 8 is the head end of the bolt, and the right end of the second connector 8 is the screw end of the bolt. The left end of the second connector 8 is located inside the insulating cover plate 6. Preferably, the left end face of the second connector 8 is flush with the left end face of the insulating cover plate 6, and the right end of the second connector 8 extends out of the insulating cover plate 6 and is provided in the mounting hole, so that the insulating cover plate 6 can be connected to the cover plate groove 33 of the electrolytic processing end plate 3 through the second connector 8.

[0049] Preferably, the insulating cover plate 6 is provided with a plurality of second connectors 8, which are arranged at intervals along the circumference of the insulating cover plate 6.

[0050] It is understood that the electrolytic processing end plate is not limited to having a second connector. In other embodiments, the insulating cover plate is snapped or embedded in the cover plate groove, or the insulating cover plate is connected to the insulating sleeve, for example, by a threaded connection.

[0051] Preferably, there are multiple insulating cover plates 6, insulating sleeves 5 and first connecting members 4 arranged in a one-to-one correspondence, and the multiple insulating cover plates 6, insulating sleeves 5 and first connecting members 4 are evenly distributed on the electrolytic processing end plate 3.

[0052] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 invention 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 invention.

[0053] Furthermore, the terms "first" and "second" are used only for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A spindle insulation device for an electrolytic machining tool, characterized in that, include: An insulating plate (1) is disposed between the end of the machine tool spindle (2) and the electrolytic machining end plate (3). The electrolytic machining end plate (3) is used to connect the electrolytic machining workpiece. In the projection plane orthogonal to the axial direction of the machine tool spindle (2), the projection of the end of the machine tool spindle (2) is located within the projection of the insulating plate (1). The first connector (4) has one end located inside the electrolytic machining end plate (3) and the other end of the first connector (4) passes through the insulating plate (1) and extends into the machine tool spindle (2); An insulating sleeve (5) is fitted around one end of the first connector (4) and located between the first connector (4) and the electrolytic processing end plate (3). An insulating cover plate (6) is provided at least partly on the insulating sleeve (5) and closes the opening of the insulating sleeve (5) at the end away from the machine tool spindle (2).

2. The spindle insulation device for an electrolytic machining tool according to claim 1, characterized in that, The insulating plate (1) has a blocking protrusion (11) which surrounds the outer peripheral wall of the insulating plate (1) along the circumference of the insulating plate (1). The blocking protrusion (11) and the electrolytic processing end plate (3) are arranged at intervals along the axial direction of the machine tool spindle (2).

3. The spindle insulation device for an electrolytic machining tool according to claim 2, characterized in that, The blocking protrusion (11) has an inclined surface (12) at one end facing the electrolytic processing end plate (3). The inclined surface (12) extends in the direction of the axis toward the insulating plate (1) and is inclined in the direction toward the electrolytic processing end plate (3).

4. The spindle insulation device for an electrolytic machining tool according to claim 2, characterized in that, The insulating plate (1) has an axial end face with a mounting groove (13), the end of the machine tool spindle (2) is located in the mounting groove (13), and the blocking protrusion (11) surrounds the outer periphery of the machine tool spindle (2) along the circumference of the machine tool spindle (2).

5. The spindle insulation device for an electrolytic machining tool according to claim 1, characterized in that, The insulating plate (1) has a first sealing groove (14) on its other axial end face. The first sealing groove (14) is an annular ring around the machine tool spindle (2) in the axial direction. The first connecting piece (4) is located in the space formed by the first sealing groove (14). The electrolytic machining end plate (3) has a first sealing boss (31) on one axial end face. The first sealing boss (31) is an annular ring around the machine tool spindle (2) in the axial direction. The first sealing boss (31) is embedded in the first sealing groove (14).

6. The spindle insulation device for an electrolytic machining tool according to claim 1, characterized in that, The other axial end face of the electrolytic machining end plate (3) is provided with a connecting hole (32) and a cover plate groove (33). The connecting hole (32) passes through the electrolytic machining end plate (3) along the axial direction of the machine tool spindle (2). One end of the first connector (4) and the insulating sleeve (5) are located in the connecting hole (32). The cover plate groove (33) is arranged around the connecting hole (32) and communicates with the connecting hole (32). The insulating cover plate (6) is arranged in the cover plate groove (33).

7. The spindle insulation device for an electrolytic machining tool according to claim 6, characterized in that, The insulating sleeve (5) has a second sealing groove (51) on one axial end face. The second sealing groove (51) is an annular ring around the insulating sleeve (5) in the axial direction. The insulating cover plate (6) has a second sealing boss (61) on one axial end face. The second sealing boss (61) is an annular ring around the insulating sleeve (5) in the axial direction, and the second sealing boss (61) is embedded in the second sealing groove (51).

8. The spindle insulation device for an electrolytic machining tool according to claim 6, characterized in that, It also includes a sealing ring (7), which is disposed between the bottom surface of the insulating cover plate (6) and the groove of the cover plate (33), and the sealing ring (7) is arranged axially around the connecting hole (32).

9. The spindle insulation device for an electrolytic machining tool according to claim 6, characterized in that, The bottom surface of the cover plate groove (33) is provided with a mounting hole. The spindle insulation device of the electrolytic machining tool also includes a second connector (8). One end of the second connector (8) is provided on the insulating cover plate (6), and the other end of the second connector (8) is provided in the mounting hole.

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