CN117718548A - Impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool - Google Patents

Abstract

The invention discloses a blade disc multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool, which relates to the technical field of electrolytic machining and comprises a machine tool body, wherein the machine tool body comprises a base, a left upright post, a right upright post and a middle upright post; the middle upright post is provided with a workpiece moving platform, the workpiece moving platform comprises a workpiece vertical moving platform, the workpiece vertical moving platform is connected with a workpiece rotary workbench, and the rotary end of the workpiece rotary workbench is used for fixing a leaf disc workpiece; an upper tool beam and a lower tool beam are arranged between the left upright post and the right upright post, the lower tool beam is connected with a tool vertical motion platform, the upper tool beam is connected with an upper tool tray through an upper rotary vibration device, the lower tool beam is connected with a lower tool tray through a lower rotary vibration device, a plurality of blade back electrodes and a plurality of tube electrodes are uniformly distributed on the circumference of the lower surface of the upper tool tray, and a plurality of blade basin electrodes are uniformly distributed on the circumference of the upper surface of the upper tool tray. The invention simplifies the processing flow of the blisk and has high processing precision and working efficiency.

Description

Impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool

Technical Field

The invention relates to the technical field of electrolytic machining, in particular to a blade disc multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool.

Background

With the continuous progress and development of the aviation industry, the performance of the novel aircraft is continuously improved, and the requirements on the aerospace engine are also higher and higher. In an aerospace engine, a blisk is the most critical and important component of the engine, the performance of which directly determines the performance of the engine. However, in the aerospace engine, the blisk has a complex structure, ultrathin blade profile, distortion, sharp front and rear edges and narrow blade grating channels, and is usually made of nickel-based superalloy, titanium alloy and other difficult-to-cut materials, so that new challenges are brought to the processing and manufacturing of the blisk.

Electrolytic machining is based on the principle of electrochemical anodic dissolution of metals to remove material and to machine parts that meet the requirements. In the machining process, the tool cathode connected with the power supply cathode is not contacted with the workpiece connected with the power supply anode, and a certain machining gap is maintained. The electrolyte flowing at high speed flows between the tool cathode and the workpiece anode, and the workpiece anode metal is continuously dissolved under the action of electrochemical reaction. Therefore, the electrolytic machining is not limited by the hardness of the material, and the high-efficiency machining of materials such as titanium alloy, high-temperature alloy and the like with poor machining performance can be realized, and the method has outstanding principle advantages especially when the multi-tool machining of the blisk is realized.

Currently, electrolytic machining of blisks is mainly divided into two processes: and (5) rough machining of the blade grid channels and finish machining of blade profiles. In order to realize the processing methods, the scholars invented a plurality of multi-axis numerical control linkage electrolytic processing machine tools. A five-axis numerical control linkage processing machine tool capable of meeting the requirements of complex-profile part blade grid channel sleeve shape and radial feeding electrolytic rough processing of blisks, diffusers and the like is designed in a 'complex-profile numerical control efficient electrolytic processing machine tool' disclosed in a patent number CN 104259604B. In the three-shaft flexible feeding blade electrolytic machining method disclosed in the patent No. CN100377820C, a three-head flexible feeding blade electrolytic machining machine tool is invented, and a blade profile and a flange plate structure can be machined simultaneously through the opposite movement of a tool cathode and the translation of a workpiece. In the patent number CN113523468B, a "blisk blade electrolytic machining machine tool with a dual feed shaft capable of swinging angle" is mentioned a machine tool structure with a deflectable feed shaft, which can finish tangential feed precision trimming of front and rear edges after finishing the blade basin and back profile of the blade.

In the prior art, because the relative motion difference between the tool cathode and the workpiece in different working procedures is large, the electrolytic machining forming of the whole profile of the blisk blade needs to be completed on different machining equipment. In addition, the electrolytic machining machines mentioned in the above patents can only implement single electrode machining, i.e., machining single channels or blades one by one using a single electrode, for example, a blisk having 90 blades needs to be repeatedly machined 90 times, which severely reduces the machining efficiency of the blisk.

In recent years, new engines are being developed and are facing batch production, and annual production tasks of various blisks are gradually increased, so that further improvement of processing efficiency and reduction of processing cost are urgently needed. However, the multi-tool electrolytic machining of the blisk is an effective method for doubly improving the machining efficiency of the blisk, but the synchronous machining of the multi-tool is difficult to realize by the existing equipment. Therefore, development of a novel electrolytic machining machine tool is needed to meet the precise and efficient electrolytic machining requirements of blisk blade grid channels and blades.

Disclosure of Invention

The invention aims to provide a blade disc multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool which is used for solving the technical problems in the prior art and meeting the motion requirements of two procedures of rough machining of a blade grid channel of a blisk and dynamic fine machining of a blade profile pulse. After the rough machining is finished, the machining process immediately enters a finish machining process, switching and connection of the machining process of the blisk can be realized without clamping again, multi-tool electrolytic machining forming of the blisk is realized, and the machining period of the blisk is greatly shortened.

In order to achieve the above object, the present invention provides the following solutions:

the invention discloses a blade disc multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool, which comprises a machine tool body, wherein the machine tool body comprises a base, a left upright post, a right upright post and a middle upright post, the left upright post, the right upright post and the middle upright post are all fixed at the upper end of the base, and the left upright post and the right upright post are respectively positioned at the left side and the right side of the middle upright post;

the middle upright post is provided with a workpiece moving platform, the workpiece moving platform comprises a workpiece vertical moving platform, the moving end of the workpiece vertical moving platform is connected with a workpiece rotary workbench, and the rotating end of the workpiece rotary workbench is used for fixing a leaf disc workpiece;

an upper tool beam and a lower tool beam are arranged between the left upright post and the right upright post, the lower tool beam is connected with a tool vertical motion platform, the tool vertical motion platform can drive the lower tool beam to move up and down, the upper tool beam is connected with an upper tool tray through an upper rotary vibration device, the lower tool beam is connected with a lower tool tray through a lower rotary vibration device, a plurality of blade back electrodes and a plurality of tube electrodes are uniformly distributed on the circumference of the lower surface of the upper tool tray, a plurality of blade basin electrodes are uniformly distributed on the circumference of the upper surface of the upper tool tray, and the workpiece rotary workbench can penetrate through the upper tool tray.

Preferably, the workpiece vertical movement platform comprises a workpiece vertical movement base, the workpiece vertical movement base is fixed on the middle upright post, a workpiece vertical driving motor is fixed at the upper end of the workpiece vertical movement base, an output shaft of the workpiece vertical driving motor is connected with a workpiece vertical driving screw rod, a workpiece vertical driving sliding block is connected to the workpiece vertical driving screw rod in a threaded mode, and the workpiece vertical driving sliding block is in sliding connection with the workpiece vertical movement base.

Preferably, the workpiece rotating table is a rotating motor.

Preferably, two tool vertical motion platforms are provided, the two tool vertical motion platforms are fixed on opposite sides of the left upright post and the right upright post, and the two tool vertical motion platforms are respectively connected to two sides of the lower tool cross beam;

the tool vertical movement platform comprises a tool vertical movement base, a tool vertical driving motor is fixed on the tool vertical movement base, an output shaft of the tool vertical driving motor is connected with a tool vertical driving screw rod, a tool vertical driving sliding block is connected to the tool vertical driving screw rod in a threaded mode, and the tool vertical driving sliding block is connected with the tool vertical movement base in a sliding mode.

Preferably, the upper tool cross beam is of an inverted-U-shaped structure; the lower tool beam is of a structure in a shape like a Chinese character 'ji'.

Preferably, the lower end of the upper tool beam is provided with an upper fixed rotary table, the upper rotary vibration device comprises an upper rotary table bearing, an upper transverse driving motor, an upper transverse driving screw rod, an upper transverse driving sliding block and an upper vibrator, the upper rotary table bearing is sleeved on the outer side of the upper fixed rotary table, the upper transverse driving motor is arranged on the upper tool beam, an output shaft of the upper transverse driving motor is connected with the upper transverse driving screw rod, the upper transverse driving screw rod is connected with the upper transverse driving sliding block in a threaded manner, the upper transverse driving sliding block is fixedly provided with the upper vibrator, a vibration main shaft is fixedly arranged on the upper vibrator, and the vibration main shaft of the upper vibrator is hinged with the upper tool disc through a connecting rod mechanism;

the upper end of the lower tool beam is provided with a lower fixed rotary table, the lower rotary vibration device comprises a lower rotary table bearing, a lower transverse movement driving motor, a lower transverse movement driving screw rod, a lower transverse movement driving sliding block and a lower vibrator, the lower rotary table bearing is sleeved on the outer side of the lower fixed rotary table, the lower transverse movement driving motor is mounted on the lower tool beam, an output shaft of the lower transverse movement driving motor is connected with the lower transverse movement driving screw rod, the lower transverse movement driving screw rod is connected with the lower transverse movement driving sliding block in a threaded manner, the lower transverse movement driving sliding block is fixedly provided with the lower vibrator, a vibration main shaft is fixedly arranged on the lower vibrator, and the vibration main shaft of the lower vibrator is hinged with the lower tool disc through a connecting rod mechanism.

Preferably, the tube electrode is fixed to the lower end of the upper tool tray by an extension rod, and the tube electrode is located below the phyllotaxis electrode.

Preferably, a plurality of cutter relieving grooves are uniformly formed in the circumferential direction of the lower tool tray, and the pipe electrode can pass through the cutter relieving grooves.

Preferably, an upper connecting and fixing lug is arranged on the upper tool tray and is used for being hinged with the upper rotary vibration device;

the lower tool tray is provided with a lower connecting and fixing lug, and the lower connecting and fixing lug is used for being hinged with the lower rotary vibration device.

Compared with the prior art, the invention has the following technical effects:

1. the invention provides a vane disc multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool, which meets the motion requirements of two working procedures of rough machining of a vane grid channel of a vane disc and dynamic fine machining of a vane profile pulse, immediately enters the fine machining working procedure after the rough machining is finished, can realize the switching and connection of the vane disc machining working procedure without clamping again, simplifies the vane disc machining flow, and is beneficial to improving the machining precision and greatly shortening the research and development period of the electrolytic machining machine tool;

2. the rough machining of the blade grid channel and the finish machining of the blade profile of the blisk adopt a multi-tool electrolytic machining mode, and the multi-tool electrolytic machining forming is realized by driving the linear feeding and the rotary movement of the upper tool plate, the lower tool plate and the blisk workpiece through a machine tool, so that the structure of a multi-electrode electrolytic machining machine tool is greatly simplified, the machining efficiency of the blisk is improved, and the machining cost is reduced;

3. in the invention, a pipe electrode for rough machining and a profile electrode for finish machining are arranged on a tool disc to form an integrated composite tool. Can be designed and assembled separately for the requirements of a certain blade grid channel and blade profile. The cathodes are individually energized and insulated from each other during processing. Thereby avoiding the influence of stray corrosion, ensuring the uniformity of the residual distribution and improving the processing precision.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a blade-disk multi-tool rough-fine integrated pulse dynamic electrolytic machining machine tool according to an embodiment;

FIG. 2 is a schematic view of a base in a blade-disk multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to an embodiment;

FIG. 3 is a schematic view of the structure of a lower tool beam of a multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to an embodiment;

FIG. 4 is a schematic view of the structure of an upper tool beam in a blade-disk multi-tool rough-fine integrated pulse dynamic electrolytic machining machine tool according to an embodiment;

FIG. 5 is a schematic diagram of a structure of an upper rotary vibration device in a blade-disk multi-tool rough-fine integrated pulse dynamic electrolytic machining machine tool according to an embodiment;

FIG. 6 is a schematic diagram of the structure of an upper tool tray in a blade tray multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to an embodiment;

FIG. 7 is a schematic view of a lower tool tray in a blade tray multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to an embodiment;

FIG. 8 is a schematic diagram of a blade grating channel rough machining in the machining method of the two-blade disc multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to the embodiment;

FIG. 9 is an enlarged view of a portion of FIG. 8;

FIG. 10 is a schematic diagram of blade profile dynamic finish machining in the machining method of the two-blade disc multi-tool rough and finish integrated pulse dynamic electrolytic machining machine tool according to the embodiment;

FIG. 11 is an enlarged view of a portion of FIG. 10;

in the figure: 1. a base; 2. a left upright post; 3. a tool vertical motion platform; 4. an upper tool beam; 4-1, an upper turntable bearing; 5. a workpiece rotating table; 6. a workpiece vertical motion platform; 7. a middle upright post; 8. a right column; 9. an upper rotary vibration device; 10. a lower rotary vibration device; 11. a lower tool beam; 11-1, a lower turntable bearing; 12. vibrating the main shaft; 13. a link mechanism; 14. a tool tray is arranged; 14-1, upper connecting fixing convex blocks; 15. a leaf back electrode; 16. an extension rod; 17. a tube electrode; 18. a lower tool tray; 18-1, connecting the lower connecting fixing convex blocks; 19. a cutter relieving groove; 20. leaf basin electrodes; 21. a blisk workpiece.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention aims to provide a blade disc multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool which is used for solving the technical problems in the prior art and meeting the motion requirements of two procedures of rough machining of a blade grid channel of a blisk and dynamic fine machining of a blade profile pulse. After the rough machining is finished, the machining process immediately enters a finish machining process, switching and connection of the machining process of the blisk can be realized without clamping again, multi-tool electrolytic machining forming of the blisk is realized, and the machining period of the blisk is greatly shortened.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

Embodiment 1,

As shown in fig. 1-7, the present embodiment provides a vane-disk multi-tool rough-fine integrated pulse dynamic electrolytic machining machine tool, which comprises a machine tool body, as shown in fig. 2, the machine tool body comprises a base 1, a left upright 2, a right upright 8 and a middle upright 7, wherein the left upright 2, the right upright 8 and the middle upright 7 are all fixed at the upper end of the base 1, and the left upright 2 and the right upright 8 are respectively positioned at the left side and the right side of the middle upright 7, namely, the left upright 2 and the right upright 8 are respectively fixed at the left side and the right side of the upper surface of the base 1, the middle upright 7 is fixed at the middle part of the upper surface of the base 1, and the middle upright 7 is also positioned behind the left upright 2 and the right upright 8.

The middle upright post 7 is provided with a workpiece moving platform, wherein the workpiece moving platform comprises a workpiece vertical moving platform 6, the moving end of the workpiece vertical moving platform 6 is connected with a workpiece rotary workbench 5, and the workpiece vertical moving platform 6 can drive the workpiece rotary workbench 5 and a leaf disc workpiece 21 to move up and down. The rotating end of the workpiece rotating table 5 is used for fixing the blisk workpiece 21, and the workpiece rotating table 5 can drive the blisk workpiece 21 to perform rotating motion.

An upper tool cross beam 4 and a lower tool cross beam 11 are arranged between the left upright post 2 and the right upright post 8, wherein two ends of the upper tool cross beam 4 are respectively fixed on adjacent surfaces of the left upright post 2 and the right upright post 8. Two ends of the lower tool cross beam 11 are respectively connected with a tool vertical movement platform 3, the two tool vertical movement platforms 3 are respectively fixed on adjacent side surfaces of the left upright post 2 and the right upright post 8, and the tool vertical movement platform 3 can drive the lower tool cross beam 11 to move up and down. The upper tool beam 4 is connected with an upper tool tray 14 through an upper rotary vibration device 9, the lower tool beam 11 is connected with a lower tool tray 18 through a lower rotary vibration device 10, and the upper rotary vibration device 9 and the lower rotary vibration device 10 have the same structure, so that the upper tool tray 14 and the lower tool tray 18 can be driven to rotate at a certain angle respectively, and meanwhile, certain vibration can be applied to the upper tool tray 14 and the lower tool tray 18. The circumference of the lower surface of the upper tool tray 14 is uniformly provided with a plurality of blade back electrodes 15 and a plurality of tube electrodes 17, the circumference of the upper surface of the upper tool tray 14 is uniformly provided with a plurality of blade basin electrodes 20, the centers of the workpiece rotary table 5, the upper tool tray 14 and the lower tool tray 18 are collinear, and the lower end of the workpiece rotary table 5 can pass through the upper tool tray 14.

In actual use, the blade disc workpiece 21 is firstly mounted on the workpiece rotary table 5, then the upper working disc and the lower working disc are connected to the negative pole of the pulse power supply, and the blade disc workpiece 21 is connected to the positive pole of the pulse power supply. The blade disc workpiece 21 is driven to move towards the pipe electrode 17 by the workpiece vertical movement platform 6 and the workpiece rotary table 5, and a predicted number of blade grid channels are machined on the blade disc workpiece 21 by the pipe electrode 17. Then the blade back electrode 15 and the blade basin electrode 20 respectively move into the corresponding blade grid channels through the workpiece vertical movement platform 6 and the tool vertical movement platform 3 and are respectively positioned on the blade back profile and the blade basin profile of the blade, and finally the whole processing process can be completed through electrolytic finish machining through the blade back electrode 15 and the blade basin electrode 20.

In this embodiment, work piece vertical motion platform 6 includes the work piece vertical motion base, work piece vertical motion base is fixed in on the middle standing post 7, the upper end of work piece vertical motion base is fixed with work piece vertical drive motor, work piece vertical drive motor's output shaft has work piece vertical drive lead screw, work piece vertical drive lead screw vertical setting, the both ends of work piece vertical drive lead screw are installed on work piece vertical motion base through the bearing frame, threaded connection has work piece vertical drive slider on the work piece vertical drive lead screw, be equipped with the internal thread through-hole that corresponds with work piece vertical drive lead screw on the work piece vertical drive slider, work piece vertical drive slider's one side offsets and sliding connection with work piece vertical motion base.

During actual use, the workpiece vertical driving motor is started to drive the workpiece vertical driving screw rod to rotate, and the workpiece vertical driving slide block is propped against the workpiece vertical moving base, so that the workpiece vertical driving slide block can only linearly move along with the rotation of the workpiece vertical driving screw rod, and finally the workpiece rotary table 5 and the leaf disc workpiece 21 are driven to synchronously move up and down.

In this embodiment, the workpiece rotary table 5 adopts an existing rotary motor, and the output shaft end of the rotary motor is fixedly connected with the blade disc workpiece 21, so that the blade workpiece can rotate along with the rotation of the output shaft of the rotary motor. In addition, regarding relevant parameters such as a specific model of the rotary electric machine, those skilled in the art can select according to actual circumstances.

In this embodiment, two tool vertical motion platforms 3 are provided, the two tool vertical motion platforms 3 have the same structure, the two tool vertical motion platforms 3 are fixed on opposite sides (i.e., adjacent sides) of the left upright post 2 and the right upright post 8, and the two tool vertical motion platforms 3 are respectively connected to the left and right sides of the lower tool cross beam 11.

For the specific structure of the tool vertical movement platform 3, the tool vertical movement platform 3 comprises tool vertical movement bases, and the two tool vertical movement bases are respectively fixed on the left upright post 2 and the right upright post 8. And each tool vertical moving base is fixedly provided with a tool vertical driving motor, an output shaft of each tool vertical driving motor is connected with a tool vertical driving screw rod, and two ends of each tool vertical driving screw rod are fixed on each tool vertical moving base through bearing blocks. The tool vertical driving screw rod is connected with a tool vertical driving sliding block in a threaded mode, and one side face of the tool vertical driving sliding block is propped against the tool vertical moving base and is in sliding connection with the tool vertical moving base.

When in actual use, the tool vertical driving screw rod can be driven to rotate by opening the tool vertical driving motor, and the tool vertical driving sliding block is propped against the tool vertical moving base, so that the tool vertical driving sliding block can only move linearly up and down along with the rotation of the tool vertical driving screw rod, and finally the two tool vertical driving sliding blocks drive the lower tool cross beam 11 to move up and down together.

In this embodiment, the upper tool beam 4 has an inverted letter-like structure; similarly, the lower tool beam 11 is of a shape like a Chinese character 'ji', and the two tool vertical motion platforms 3 and the lower tool beam 11 positioned in the middle form a double-synchronous-shaft driven gantry structure.

In this embodiment, as shown in fig. 4, the lower end of the upper tool beam 4 is provided with an upper fixed turret, and it should be noted that the center of the upper fixed turret is provided with a central through hole therethrough, and the workpiece rotating table 5 can pass through the upper tool beam 4 from the central through hole. The upper rotary vibration device 9 comprises an upper rotary table bearing 4-1, an upper transverse driving motor, an upper transverse driving screw rod, an upper transverse driving sliding block and an upper vibrator, wherein the upper vibrator can adopt any vibrator, vibration exciter, vibration motor or vibration motor with proper existing size. The inner ring of the upper turntable bearing 4-1 is sleeved on the outer side of the upper fixed turntable, and the outer ring of the upper turntable bearing 4-1 is fixedly connected with the inner ring of the upper tool disk 14. The upper transverse moving driving motor is arranged on the upper tool beam 4, an output shaft of the upper transverse moving driving motor is connected with an upper transverse moving driving screw rod, two ends of the upper transverse moving driving screw rod are respectively connected to the upper tool beam 4 in a rotating mode through bearing seats, an upper transverse moving driving sliding block is connected to the upper transverse moving driving screw rod in a threaded mode, one side face of the upper transverse moving driving sliding block abuts against the upper tool beam 4 and is in sliding connection with the upper tool beam 4, and an upper vibrator is fixed to the other side face of the upper transverse moving driving sliding block. The upper vibrator is fixedly provided with a vibrating spindle 12, the vibrating spindle 12 of the upper vibrator is hinged with an upper tool tray 14 through a connecting rod mechanism 13, and specifically, as shown in fig. 4, the connecting mechanism comprises a transverse connecting rod and a vertical connecting rod, one end of the transverse connecting rod is rotationally connected with the vibrating spindle 12, the other end of the transverse connecting rod is rotationally connected with the lower end of the vertical connecting rod, and the upper end of the vertical connecting rod is rotationally connected with the upper tool tray 14.

When the upper tool tray 14 is required to be rotated, only the upper transverse movement driving motor is required to be started, the upper transverse movement driving motor can drive the upper transverse movement driving screw rod to synchronously move, and a common screw-nut pair structure is formed between the upper transverse movement driving screw rod and the upper transverse movement driving sliding block, so that the upper transverse movement driving sliding block drives the upper vibrator to transversely move along the axial direction of the upper transverse movement driving screw rod, and in the moving process of the upper vibrator, the upper vibrator can drive the upper tool tray 14 to rotate in a small range because the upper vibrator is rotationally connected with the upper tool tray 14 through the connecting rod mechanism 13, and the upper vibrator can also provide vibration force for the upper tool tray 14, so that the working process of pulse electrolytic forming is realized.

Similarly, as shown in fig. 5, the upper end of the lower tool beam 11 is provided with a lower fixed turntable, and unlike the upper fixed turntable, the center of the lower fixed turntable is not required to be provided with a central through hole. The lower rotary vibration device 10 comprises a lower turntable bearing 11-1, a lower transverse driving motor, a lower transverse driving screw rod, a lower transverse driving sliding block and a lower vibrator, wherein the inner ring of the lower turntable bearing 11-1 is sleeved on the outer side of the lower fixed turntable, and the outer ring of the lower turntable bearing 11-1 is fixedly connected with the inner ring of the lower tool tray 18. The lower transverse movement driving motor is arranged on the lower tool beam 11, an output shaft of the lower transverse movement driving motor is connected with a lower transverse movement driving screw rod, and two ends of the lower transverse movement driving screw rod are rotatably arranged on the upper surface of the lower tool beam 11 through bearing seats. The lower transverse driving screw rod is connected with a lower transverse driving sliding block through threads, one side surface of the lower transverse driving sliding block is propped against the lower tool cross beam 11, a lower vibrator is fixed on the other side surface of the lower transverse driving sliding block, a vibrating main shaft 12 is fixed on the lower vibrator, and the vibrating main shaft 12 of the lower vibrator is hinged with a lower tool tray 18 through a connecting rod mechanism 13.

The working process of the lower rotary vibration device 10 and the specific structure of the link mechanism 13 are identical to those of the upper rotary vibration device 9, and thus will not be described in detail herein.

In the present embodiment, as shown in fig. 6, the pipe electrode 17 is fixed to the lower end of the upper tool tray 14 by the extension rods 16, that is, the upper ends of the plurality of extension rods 16 are circumferentially fixed to the lower surface of the upper tool tray 14, and the lower ends of the extension rods 16 are fixedly connected to the pipe electrode 17 in order to locate the pipe electrode 17 below the phyllotaxis electrode 15, thereby avoiding the mutual influence of the pipe electrode 17 and the phyllotaxis electrode 15 in operation.

In the present embodiment, a plurality of relief grooves 19 are uniformly provided in the circumferential direction of the lower tool tray 18, and the width of the relief groove 19 is smaller than the width of the pipe electrode 17, so that the pipe electrode 17 can pass through the relief groove 19.

In this embodiment, as shown in fig. 6, an upper connection fixing bump 14-1 is provided on the upper tool tray 14, a hinge hole is provided on the upper connection fixing bump 14-1, and the hinge hole of the upper connection fixing bump 14-1 is used for hinging with a vertical link in the upper rotary vibration device 9.

Similarly, as shown in fig. 7, the lower tool tray 18 is provided with a lower connection fixing protrusion 18-1, the lower connection fixing protrusion 18-1 is provided with a hinge hole, and the hinge hole of the lower connection fixing protrusion 18-1 is used for hinging with a vertical link in the lower rotary vibration device 10.

Embodiment II,

As shown in fig. 8-11, the present embodiment provides a processing method of a impeller multi-tool rough and fine integrated pulse dynamic electrolytic processing machine tool, based on the impeller multi-tool rough and fine integrated pulse dynamic electrolytic processing machine tool disclosed in the first embodiment, comprising the following steps:

s1, firstly, mounting a leaf disc workpiece 21 to be processed on a workpiece rotary workbench 5, driving a workpiece vertical motion platform 6 to enable the upper surface of the leaf disc workpiece 21 to be located at a position of 0.3-0.5mm below a tube electrode 17, and driving a tool vertical motion platform 3 to drive a lower tool disc 18 to be far away from the lower surface of the leaf disc workpiece 21.

S2, carrying out electrolytic rough machining of the cascade channels, and enabling the integral impeller workpiece 21 to feed upwards and rotate around the axis of the impeller workpiece under the drive of the workpiece vertical motion platform 6, so that electrolytic rough machining of a plurality of twisted cascade channels is realized under the combined action of the workpiece vertical motion platform 6 and the workpiece rotary table 5. It should be noted that if the number of the pipe electrodes 17 is smaller than the number of the cascade channels to be processed, all the cascade channels cannot be processed by one cascade channel processing, so that the cascade disk workpiece 21 needs to be retracted to the initial position under the driving of the workpiece vertical moving platform 6 after the first cascade channel processing is finished, the workpiece rotating table 5 drives the vane workpiece to rotate by a certain angle, and the above processing process is repeated for the second cascade channel rough processing and the third cascade channel rough processing … … until all the cascade channels are processed and formed.

And S3, after the pipe electrode 17 penetrates through the lower surface of the blade disc workpiece 21 in the last blade grid channel forming, stopping the workpiece rotary table 5, continuously driving the blade disc workpiece 21 to continuously feed upwards by the workpiece vertical movement platform 6 at a rising speed faster than that in rough machining, and driving the upper rotary vibration device 9 to drive the upper tool disc 14 to rotate until the blade back electrode 15 is positioned in the blade grid channel. At the same time, the lower rotary vibration device 10 is driven to rotate the lower tool tray 18, so that the cutter relieving groove 19 of the lower tool tray 18 is positioned below the pipe electrode 17. Subsequently, the driving tool vertical movement platform 3 drives the lower tool tray 18 to move upwards, so that the pipe electrode 17 is fed below the lower surface of the lower tool tray 18 through the cutter relieving groove 19 until the leaf basin electrode 20 moves into the leaf grid channel to stop rectilinear movement.

S4, carrying out pulsating electrolytic finishing on the blade profile, driving the upper rotary vibration device 9 to drive the upper tool tray 14 to rotate, and gradually approaching the blade back electrode 15 to the blade back profile; the lower rotary vibration device 10 is driven to drive the lower tool tray 18 to rotate, and the leaf basin electrode 20 gradually approaches the leaf basin profile; meanwhile, the vibration main shafts 12 of the upper rotary vibration device 9 and the lower rotary vibration device 10 drive the blade back electrode 15 and the blade basin electrode 20 to do circumferential vibration, so that the pulsating precise electrolytic molding of the blade back profile and the blade basin profile is realized.

The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (9)

1. A blade disc multitool thick smart integral type pulse dynamic electrolytic machining lathe, its characterized in that: the machine tool comprises a machine tool body, wherein the machine tool body comprises a base, a left upright post, a right upright post and a middle upright post, the left upright post, the right upright post and the middle upright post are all fixed at the upper end of the base, and the left upright post and the right upright post are respectively positioned at the left side and the right side of the middle upright post;

the middle upright post is provided with a workpiece moving platform, the workpiece moving platform comprises a workpiece vertical moving platform, the moving end of the workpiece vertical moving platform is connected with a workpiece rotary workbench, and the rotating end of the workpiece rotary workbench is used for fixing a leaf disc workpiece;

an upper tool beam and a lower tool beam are arranged between the left upright post and the right upright post, the lower tool beam is connected with a tool vertical motion platform, the tool vertical motion platform can drive the lower tool beam to move up and down, the upper tool beam is connected with an upper tool tray through an upper rotary vibration device, the lower tool beam is connected with a lower tool tray through a lower rotary vibration device, a plurality of blade back electrodes and a plurality of tube electrodes are uniformly distributed on the circumference of the lower surface of the upper tool tray, a plurality of blade basin electrodes are uniformly distributed on the circumference of the upper surface of the upper tool tray, and the workpiece rotary workbench can penetrate through the upper tool tray.

2. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: the workpiece vertical movement platform comprises a workpiece vertical movement base, the workpiece vertical movement base is fixed on the middle upright post, a workpiece vertical driving motor is fixed at the upper end of the workpiece vertical movement base, an output shaft of the workpiece vertical driving motor is connected with a workpiece vertical driving screw rod, a workpiece vertical driving sliding block is connected to the workpiece vertical driving screw rod in a threaded mode, and the workpiece vertical driving sliding block is in sliding connection with the workpiece vertical movement base.

3. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: the workpiece rotary workbench is a rotary motor.

4. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: the two tool vertical motion platforms are fixed on opposite sides of the left upright post and the right upright post, and are respectively connected to two sides of the lower tool cross beam;

the tool vertical movement platform comprises a tool vertical movement base, a tool vertical driving motor is fixed on the tool vertical movement base, an output shaft of the tool vertical driving motor is connected with a tool vertical driving screw rod, a tool vertical driving sliding block is connected to the tool vertical driving screw rod in a threaded mode, and the tool vertical driving sliding block is connected with the tool vertical movement base in a sliding mode.

5. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: the upper tool beam is of an inverted U-shaped structure; the lower tool beam is of a structure in a shape like a Chinese character 'ji'.

6. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: the lower end of the upper tool beam is provided with an upper fixed rotary table, the upper rotary vibration device comprises an upper rotary table bearing, an upper transverse movement driving motor, an upper transverse movement driving screw rod, an upper transverse movement driving sliding block and an upper vibrator, the upper rotary table bearing is sleeved on the outer side of the upper fixed rotary table, the upper transverse movement driving motor is arranged on the upper tool beam, an output shaft of the upper transverse movement driving motor is connected with the upper transverse movement driving screw rod, the upper transverse movement driving screw rod is connected with the upper transverse movement driving sliding block in a threaded manner, the upper transverse movement driving sliding block is fixedly provided with the upper vibrator, a vibration main shaft is fixedly arranged on the upper vibrator, and the vibration main shaft of the upper vibrator is hinged with the upper tool disc through a connecting rod mechanism;

the upper end of the lower tool beam is provided with a lower fixed rotary table, the lower rotary vibration device comprises a lower rotary table bearing, a lower transverse movement driving motor, a lower transverse movement driving screw rod, a lower transverse movement driving sliding block and a lower vibrator, the lower rotary table bearing is sleeved on the outer side of the lower fixed rotary table, the lower transverse movement driving motor is mounted on the lower tool beam, an output shaft of the lower transverse movement driving motor is connected with the lower transverse movement driving screw rod, the lower transverse movement driving screw rod is connected with the lower transverse movement driving sliding block in a threaded manner, the lower transverse movement driving sliding block is fixedly provided with the lower vibrator, a vibration main shaft is fixedly arranged on the lower vibrator, and the vibration main shaft of the lower vibrator is hinged with the lower tool disc through a connecting rod mechanism.

7. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: the tube electrode is fixed at the lower end of the upper tool tray through an extension rod, and the tube electrode is positioned below the leaf back electrode.

8. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: a plurality of cutter relieving grooves are uniformly formed in the circumferential direction of the lower tool tray, and the pipe electrode can penetrate through the cutter relieving grooves.

9. The impeller multi-tool rough and fine integrated pulse dynamic electrolytic machining machine tool according to claim 1, wherein: the upper tool tray is provided with an upper connecting and fixing lug which is used for being hinged with the upper rotary vibration device;

the lower tool tray is provided with a lower connecting and fixing lug, and the lower connecting and fixing lug is used for being hinged with the lower rotary vibration device.