CN210412922U

CN210412922U - Multifunctional milling head mounting device for electrolytic electric spark milling

Info

Publication number: CN210412922U
Application number: CN201920806074.2U
Authority: CN
Inventors: 罗建全
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-28
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a multi-functional cutter head installation device for electrolytic electric spark milling, which relates to the technical field of electrolytic electric spark combined machining, and comprises a conductive shaft, wherein one end of the conductive shaft is provided with a joint component connected with a driving mechanism arranged on a basic machining platform, the other end of the conductive shaft is provided with a cutting sleeve for fixing a cutter head, the conductive shaft is sequentially sleeved with an installation sleeve and an electric brush seat from one end close to the cutting sleeve to one end close to the joint component, the installation sleeve is fixedly connected with the electric brush seat, the installation sleeve and the electric brush seat are both rotationally connected with the conductive shaft through bearings, and the electric brush seat is fixedly connected with the basic machining platform through a fixing mechanism; an inner liquid spraying device is arranged on the mounting sleeve, and an electric brush assembly is arranged on the electric brush seat; the utility model discloses can realize the quick replacement of electrode cutter head and basic processing platform's quick butt joint installation and electrode cutter head and ordinary cutter head, and provide interior liquid jet cutter head's confession liquid connecting device, the function is various, convenient to use, commonality are strong.

Description

Multifunctional milling head mounting device for electrolytic electric spark milling

Technical Field

The utility model relates to an electrolysis electric spark mills technical field, specifically relates to an electrolysis electric spark mills with multi-functional cutter head installation device.

Background

At present, the common manufacturing processes for machining integral components made of difficult-to-cut materials such as titanium alloy, high-temperature alloy and the like comprise numerical control milling, electric spark machining and electrolytic machining. When the electric spark machining is adopted, not only is the machining efficiency still limited, but also a recast layer, a heat affected zone and micro cracks are easily formed on the machined surface of the workpiece, and the fatigue strength and the service life of the whole component are influenced. Although the electrolytic machining has the advantages of no tool cathode loss, high machining efficiency, no machining stress and the like, a passivation film with high resistance and a compact structure is easily formed on the surface of a workpiece in the anode dissolving process, so that the electrolytic reaction is prevented from being carried out. In particular, when a material having a high self-passivation property such as a titanium alloy is electrolytically processed, an active cutting fluid containing chlorine ions or the like is generally selected to destroy a passivation film, which in turn causes severe stray corrosion and results in low processing accuracy.

The electrolytic electric spark composite processing technology (ECDM) integrates the advantages of electrolysis and electric spark processing, is a novel special processing technology, realizes the high-efficiency processing of difficult-to-process materials by adopting a composite processing method of alternately performing electrochemical processing and electric spark discharge processing, and can realize high-efficiency erosion processing aiming at the materials which are difficult to process by a common cutting processing method, so the ECDM is gradually used in the processing of the difficult-to-process materials; in the field of aerospace, the technology is applied to large-piece processing of high-temperature alloy materials such as titanium alloy, nickel-based alloy and the like, and has the processing effects of low cost and high efficiency.

When the ECDM milling equipment platform is built, electrode materials serving as a milling head need to be installed on a basic processing platform such as a numerical control milling machine tool, hardware building of the ECDM milling equipment platform is achieved, how to achieve rapid installation and disassembly of the electrode materials serving as the milling head and the basic processing platform and rapid replacement of the electrode milling head and a common milling head are the basis for stable and efficient operation of the ECDM milling equipment, and the basic problem to be solved for building the ECDM milling equipment platform is solved.

In addition, the traditional mode that adopts outer nozzle to provide cutting fluid, its cutting fluid most runs off from the work piece surface, when processing cut depth is great, because the very big cutting fluid that leads to in the processing clearance is difficult in time to be full of whole processing clearance for the flow resistance, causes the regional liquid supply of processing not enough, has restricted the improvement of material clearance. Therefore, an internal injection liquid supply mode is introduced, cutting fluid is directly injected into the machining gap through the inner hole of the milling head, a stable and uniform flow field is formed in the machining gap, joule heat, insoluble products and the like generated by electrolytic machining can be timely taken away, the milling depth is obviously improved, the machining area is increased, the removal of large surplus of alloy which is difficult to cut and is high in efficiency and low in cost is facilitated, and how to quickly and conveniently realize the internal liquid supply of the electrode milling head is also the core problem to be solved by the electrode milling head mounting device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the purpose of hydrojet electrode milling head and feed liquor system butt joint intercommunication in changing and making things convenient for in milling head fast loading and unloading that mills equipment in order to realize ECDM, the utility model provides a mill with multi-functional milling head installation device.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme: a multifunctional milling head mounting device for electrolytic electric spark milling comprises a conductive shaft, wherein one end of the conductive shaft is provided with a joint component connected with a driving mechanism arranged on a basic processing platform, the other end of the conductive shaft is provided with a cutting sleeve for fixing a milling head, a mounting sleeve and an electric brush seat are sequentially sleeved on the conductive shaft from one end close to the cutting sleeve to one end close to the joint component, the mounting sleeve is fixedly connected with the electric brush seat, the mounting sleeve and the electric brush seat are rotatably connected with the conductive shaft through bearings, and the electric brush seat is connected with a fixing mechanism; an inner liquid spraying device is arranged on the mounting sleeve, and an electric brush assembly is arranged on the electric brush seat.

Further, interior liquid spray device is including installing the insulating coupling of interior liquid spray on the installation cover, is equipped with interior liquid spray channel in the conducting shaft, is equipped with sealed cover pad between conducting shaft and the installation cover, sealed cover pad and conducting shaft fixed connection, sealed cover pad rotates with the installation cover to be connected, set up the logical groove that corresponds with interior liquid spray insulating coupling on the axial plane of sealed cover pad, the axial plane and the logical groove butt joint intercommunication of conducting shaft are run through to the one end of interior liquid spray channel, the terminal surface intercommunication to the cutting ferrule inside that the other end of interior liquid spray channel runs through conducting shaft.

Furthermore, a plurality of through holes are uniformly penetrated through the electric brush base, the shaft axes of the through holes are perpendicular to and intersected with the shaft axis of the conductive shaft, the electric brush assembly comprises a plurality of electric brushes which are equal to the number of the through holes and are uniformly arranged in each through hole and are contacted with the conductive shaft, a base plate is fixedly connected to the electric brush base right above the through holes, conductive columns capable of sliding on the base plate are vertically penetrated through the base plate, one ends of the conductive columns, facing the through holes, extend into the through holes and are fixedly connected with the electric brushes, one ends, far away from the electric brushes, of the conductive columns are connected to the branching columns, and the branching columns are connected with conductive discs arranged on the electric brush base; and a pressure spring is sleeved on the conductive column between the electric brush and the base plate.

Furthermore, the electric brushes are graphite electric brushes, the electric brushes are arranged in three groups and six in each group, and the electric brushes in the same group are positioned on the same plane vertical to the axis of the conductive shaft and are distributed at equal angles by taking the intersection point as the center of a circle.

Furthermore, the joint assembly comprises a conical cutter handle fixedly connected with the conductive shaft, and one end, far away from the conductive shaft, of the conical cutter handle is clamped into the end face of the rotary main shaft of the basic processing platform.

Furthermore, the fixing mechanism comprises a baffle fixedly connected with the electric brush holder, and one end, far away from the electric brush holder, of the baffle is provided with a locking device.

Furthermore, a plurality of outer liquid spraying pipes which are inclined to the center and take the clamping sleeve as the center are arranged on one side face, close to the clamping sleeve, of the mounting sleeve, the mounting sleeve is also communicated with an outer liquid spraying insulating pipe joint, and the outer liquid spraying insulating pipe joint is communicated with the outer liquid spraying pipes through outer liquid spraying channels arranged in the mounting sleeve.

Further, an insulating pad is arranged between the bearing and the conductive shaft.

Furthermore, a cooling blind hole communicated with the inner liquid spraying channel is formed in the conductive shaft.

The utility model has the advantages as follows:

1. the utility model arranges the brush component on the conductive shaft to realize the electrode connection of the electrode milling head; the conductive shaft is provided with a joint assembly, so that the installation device and the basic processing platform can be quickly butted, installed or disassembled; the conductive shaft is provided with the clamping sleeve, so that the electrode milling head with different specifications in a certain range can be quickly clamped, installed and replaced, the conductive shaft is universal for the electrode milling head and a common milling head, the electrode milling head and the common milling head can be quickly switched, an inner liquid spraying device is arranged, the inner liquid spraying type electrode milling head and a liquid supply system are quickly butted, the integration of the whole structure is strong, and the installation and replacement processes of the milling head of an ECDM milling equipment platform and the development of peripheral equipment of inner liquid spraying liquid supply are simplified;

2. the electric brush of the utility model is elastically arranged on the electric brush seat through the pressure spring, and the pressure spring applies elastic pressure to the electric brush to ensure good contact between the conductive shaft and the electric brush;

3. the utility model has the advantages that the conductive shaft is uniformly wound with 18 electric brushes, so that the passing of large current in the peak value of 2000A can be accommodated, the current flux is large, the device is stable when the current is increased, and the electrolytic electric spark milling efficiency is convenient to improve;

4. the utility model discloses a joint subassembly includes the handle of a knife that is used for the rotatory main shaft of card income basic processing platform with conducting shaft fixed connection, and the handle of a knife card advances the rotatory main shaft terminal surface of basic processing platform, realizes the fixed of multi-functional cutter head installation device and rotatory main shaft terminal surface fast, makes things convenient for the rotatory main shaft direct drive conducting shaft rotation of basic processing platform;

5. the utility model discloses a set up outer hydrojet subassembly on the interior hydrojet device, when the machined part has more clearance to make interior hydrojet run off in the work piece clearance great, the hydrojet subassembly carries out the cutting fluid to supply outside the accessible, and the advantage of hydrojet and outer hydrojet in the effectual combination further guarantees machining efficiency, and its compact structure, integration and integrated performance are high.

6. According to the invention, the cooling blind hole communicated with the inner liquid spraying channel is arranged in the conductive shaft, cutting fluid enters the conductive shaft and enters the cooling blind hole through the inner liquid spraying channel, and heat generated by the conductive shaft due to contact friction and conduction with the electric brush is absorbed and dissipated, so that a good heat dissipation effect is achieved on the conductive shaft.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a right side view of fig. 1.

Reference numerals: 1-conductive shaft, 2-ferrule, 3-branching post, 4-brush holder, 401-through hole, 5-brush, 6-central liquid flushing pipe, 7-conductive disc, 8-mounting sleeve, 9-inner liquid spraying insulating pipe joint, 10-inner liquid spraying channel, 11-sealing sleeve gasket, 12-through groove, 13-backing plate, 14-conductive post, 15-pressure spring, 16-handle, 17-baffle, 18-outer liquid spraying pipe, 19-outer liquid spraying insulating pipe joint, 20-outer liquid spraying channel, 21-rotating spindle end face, 22-first bearing, 23-second bearing, 24-cooling blind hole

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1 to 3, the present embodiment provides a multifunctional milling head mounting device for electrolytic electric spark milling, including a conductive shaft 1, a connector assembly connected to a driving mechanism disposed on a basic processing platform is disposed at a right end of the conductive shaft 1, a cutting ferrule 2 for fixing a milling head is mounted at a left end of the conductive shaft 1, the cutting ferrule 2 may be of different specifications, and may be clamped and replaced with electrode milling heads of different specifications, and may also be used to rapidly replace a common milling head and an electrode milling head, in the present embodiment, the cutting ferrule 2 preferably uses an ER32 cutting ferrule; the electric conduction shaft 1 is sequentially sleeved with a mounting sleeve 8 and a brush seat 4 from left to right, the mounting sleeve 8 is fixedly connected with the brush seat 4, the mounting sleeve 8 is rotatably connected with the electric conduction shaft 1 through a first bearing 22, the brush seat 4 is rotatably connected with the electric conduction shaft 1 through a second bearing 23, and insulating pads are arranged among the first bearing 22, the second bearing 23 and the electric conduction shaft 1; brush holder 4 passes through fixed establishment and basic processing platform fixed connection, is equipped with interior hydrojet device on the installation cover 8, is equipped with the brush subassembly on brush holder 4, brush subassembly electric connection to power supply.

Wherein, the inner liquid spraying device comprises an inner liquid spraying insulating pipe joint 9 arranged on the side surface of an installation sleeve 8, the inner liquid spraying insulating pipe joint 9 is communicated with an external central liquid flushing pipe 21, an inner liquid spraying channel 10 is communicated in a conductive shaft 1, a sealing sleeve gasket 11 is arranged between the conductive shaft 1 and the installation sleeve 8, the sealing sleeve gasket 11 is fixedly connected with the conductive shaft 1, the sealing sleeve gasket 11 and the conductive shaft 1 synchronously rotate, an incompletely-closed annular through groove 12 is arranged on the axial surface of the sealing sleeve gasket 11 around the axial lead of the sealing sleeve gasket 11, the plane where the through groove 12 is positioned is vertical to the axial lead of the conductive shaft 1, one end of the inner liquid spraying channel 10 is communicated with the through groove 12 through the axial surface of the conductive shaft 1, the other end of the inner liquid spraying channel 10 is communicated with the interior of a clamping sleeve 3 through the end surface of the conductive shaft 1, the inner liquid spraying insulating pipe joint 9 is communicated with the through groove clamping sleeve 12, thus, the inner liquid spraying insulating, the internal liquid spraying, milling and liquid supplying effects of electrolytic electric sparks are realized. A cooling blind hole 24 communicated with the right end of the inner liquid spraying channel 10 is formed in the conductive shaft 1, cutting liquid enters the conductive shaft and enters the cooling blind hole through the inner liquid spraying channel, heat generated by the conductive shaft due to contact friction and conduction with the electric brush is absorbed and dissipated, and a good heat dissipation effect is achieved on the conductive shaft.

Wherein, the joint component can be customized and changed along with the change of the basic processing platform, the most direct function is to realize the butt joint with the basic processing platform and provide the rotation driving force for the conductive shaft 1, the basic processing platform can be a basic platform such as a numerical control milling machine, the embodiment takes the numerical control milling machine as an example, the joint component comprises a handle 16 which is fixedly connected with the conductive shaft 1 and is used for being clamped into the end surface 21 of the rotation main shaft of the numerical control milling machine, the shape of the handle 16 is matched with the clamping interface of the end surface 21 of the rotation main shaft of the numerical control milling machine, the fixing mechanism comprises a baffle 17 connected with the electric brush seat 4, one end of the baffle 17 far away from the electric brush seat 4 is provided with a locking device, after the handle 16 is clamped into the end surface 21 of the rotation main shaft of the numerical control milling machine, the main body of the electrolytic electric spark milling head installation device is fixedly connected with the numerical control milling, preferably a screw and nut assembly. Thus, the motor spindle of the numerically controlled milling machine drives the conductive shaft 1 to rotate, and the brush assembly and the inner liquid spraying device on the conductive shaft 1 are fixedly connected with the end face 21 of the rotating spindle through the baffle 17 and are static relative to the conductive shaft 1, so that the brush assembly and the inner liquid spraying device are not driven to rotate by the conductive shaft 1 in the rotating process.

The working principle is as follows: when the tool is used, the tool shank 16 is clamped into the end face of a rotating main shaft of the numerical control milling machine, the tool shank is locked through the locking device, an electrode milling head is clamped on the clamping sleeve 2 when electrolytic electric spark milling machining is adopted, the numerical control milling machine is started, the electric brush assembly is electrified, the conductive shaft 1 rotates to drive the electrode milling head to rotate, electrolytic electric spark milling machining is carried out on a workpiece fixed on a machining table of the numerical control milling machine, and the internal liquid spraying device provides an internal liquid spraying channel for the electrode milling head, so that the internal liquid spraying electrolytic machining is facilitated; when the common machining is adopted, the electric brush assembly is not electrified, and the electrode milling head on the cutting sleeve 2 is replaced by the common milling head.

Example 2

With reference to fig. 2 and fig. 3, the present embodiment is further optimized based on embodiment 1, specifically:

three groups of 6 through holes 401 are uniformly penetrated on the electric brush seat 4, the shaft axis of each through hole 401 is vertical to and intersected with the shaft axis of the conductive shaft 1, the shaft axis of each group of through holes 401 is positioned in the same plane and is vertical to and intersected with the shaft axis of the conductive shaft 1, each group of through holes 401 is distributed in an equal angle by taking the intersection point as the circle center, the electric brush assembly comprises 18 electric brushes 5 which are uniformly arranged in the through holes 401 and are contacted with the conductive shaft 1, one electric brush 5 is arranged in each through hole 401, the electric brush 5 is a graphite electric brush, a backing plate 13 is fixedly connected on the electric brush seat 4 and is positioned right above the through holes 401, a conductive column 14 which can slide on the backing plate 13 is vertically penetrated on the backing plate 13, one end of the conductive column 14 facing the through holes 401 extends into the through holes 401 and is fixedly connected with the electric brushes 5, one end of the conductive column 14 far away from the electric brushes 5 is connected with the branching column 3, preferably, the conductive disc 7 is annular and is detachably mounted on the brush holder 4, and the conductive disc 7 is communicated to a power supply; a pressure spring 15 is sleeved on the conductive column 14 between the brush 5 and the backing plate 13.

The electric brush assembly is provided with 18 electric brushes, so that the passing of large current in a peak value of 2000A can be realized, the current flux is large, the components are stable when the current is greatly increased, and the electrolytic electric spark milling efficiency is conveniently improved; the pressure spring 15 always has elastic pressure on the electric brush 5, and ensures that the conductive shaft 1 is in good contact with the electric brush 5 in the rotating process.

Example 3

As shown in fig. 1 and fig. 2, the present embodiment is further optimized based on the embodiments 1 and 2, and the main differences are that:

a plurality of outer liquid spraying pipes 18 which are inclined centripetally and take the cutting ferrule 2 as the center are arranged on one side surface of the mounting sleeve 8 close to the cutting ferrule 2, an outer liquid spraying insulating pipe joint 19 is communicated on the mounting sleeve 8, the outer liquid spraying insulating pipe joint 19 is communicated with a liquid supply pipeline of an outer liquid spraying, and the outer liquid spraying insulating pipe joint 19 is communicated with the outer liquid spraying pipes 18 through outer liquid spraying channels 20 arranged in the mounting sleeve 8. When a workpiece with multiple gaps is machined like a blade disc of an aero-engine, the flow resistance of cutting fluid in the machining gap is large, an electrode milling head rotates during machining, a large amount of internal spraying cutting fluid can quickly run off in a machined area, the phenomena of cutting fluid flow reduction and uneven flow velocity distribution in the machining gap are caused, the machining stability is easily deteriorated, the machining efficiency is not favorably improved, an external liquid spraying device is added on an internal liquid spraying device of an electrolytic electric spark milling head installation device for supplement, the advantages of internal liquid spraying and external liquid spraying are effectively combined, the machining efficiency is further ensured, the external liquid spraying device is improved and added on the internal liquid spraying device, the structure is compact, and the integration performance is high.

Claims

1. The utility model provides an electrolysis electric spark mills with multi-functional cutter head installation device, includes conductive shaft (1), its characterized in that: one end of the conductive shaft (1) is provided with a joint assembly connected with a driving mechanism arranged on the basic processing platform, the other end of the conductive shaft (1) is provided with a clamping sleeve (2) used for fixing a milling head, the conductive shaft (1) is sequentially sleeved with an installation sleeve (8) and an electric brush seat (4) from one end close to the clamping sleeve to one end close to the joint assembly, the installation sleeve (8) is fixedly connected with the electric brush seat (4), the installation sleeve (8) and the electric brush seat (4) are rotatably connected with the conductive shaft (1) through bearings, and the electric brush seat (4) is connected with a fixing mechanism; an inner liquid spraying device is arranged on the mounting sleeve (8), and an electric brush assembly is arranged on the electric brush seat (4).

2. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 1, wherein: interior liquid spray device is including installing interior liquid spray insulating tube coupling (9) on installation cover (8), be equipped with interior liquid spray channel (10) in conducting shaft (1), be equipped with sealed sleeve gasket (11) between conducting shaft (1) and installation cover (8), sealed sleeve gasket (11) and conducting shaft (1) fixed connection, sealed sleeve gasket (11) rotate with installation cover (8) and are connected, set up logical groove (12) that correspond with interior liquid spray insulating tube coupling (9) on the axial plane of sealed sleeve gasket (11), the axial plane that the one end of interior liquid spray channel (10) runs through conducting shaft (1) is with logical groove (12) butt joint intercommunication, the terminal surface that the other end of interior liquid spray channel (10) runs through conducting shaft (1) communicates to cutting ferrule (2) inside.

3. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 1, wherein: the electric brush assembly is characterized in that a plurality of through holes (401) uniformly penetrate through the electric brush base (4), the shaft axes of the plurality of through holes (401) are perpendicular to and intersected with the shaft axis of the conductive shaft (1), the electric brush assembly comprises a plurality of electric brushes (5) which are equal to the number of the through holes (401) and are uniformly arranged in each through hole (401) and are in contact with the conductive shaft (1), a base plate (13) is fixedly connected to the electric brush base (4) and is positioned right above the through holes (401), a conductive column (14) capable of sliding on the base plate (13) vertically penetrates through the base plate (13), one end, facing the through holes (401), of the conductive column (14) stretches into the through holes (401) to be fixedly connected with the electric brushes (5), one end, far away from the electric brushes (5), of the conductive column (14) is connected to the distributing column (3), and the distributing column (3) is connected with a conductive disc (7; and a pressure spring (15) is sleeved on the conductive column (14) between the electric brush (5) and the backing plate (13).

4. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 3, wherein: the electric brushes (5) are graphite electric brushes, the electric brushes (5) are divided into three groups and six electric brushes in each group, and the electric brushes (5) in the same group are positioned on the same plane vertical to the axial lead of the conductive shaft (1) and distributed at equal angles by taking the intersection point as the circle center.

5. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 1, wherein: the joint component comprises a conical cutter handle (16) fixedly connected with the conductive shaft (1), and one end, far away from the conductive shaft (1), of the conical cutter handle (16) is clamped into a rotary main shaft end face (21) of the basic processing platform.

6. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 1, wherein: the fixing mechanism comprises a baffle plate (17) fixedly connected with the electric brush seat (4), and one end, far away from the electric brush seat (4), of the baffle plate (17) is provided with a locking device.

7. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 1, wherein: a plurality of outer liquid spraying pipes (18) which are arranged on one side face, close to the clamping sleeve (2), of the mounting sleeve (8) and use the clamping sleeve (2) as a center and are inclined to the center are arranged, an outer liquid spraying insulating pipe joint (19) is communicated with the mounting sleeve (8), and the outer liquid spraying insulating pipe joint (19) is communicated with the outer liquid spraying pipes (18) through outer liquid spraying channels (20) arranged in the mounting sleeve (8).

8. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 1, wherein: an insulating pad is arranged between the bearing and the conductive shaft (1).

9. The multifunctional milling head mounting device for electrolytic electric spark milling according to claim 1, wherein: and a cooling blind hole (24) communicated with the inner liquid spraying channel (10) is arranged in the conductive shaft (1).