CN213969385U - Integral impeller electrolytic forming processing device - Google Patents

Abstract

The utility model provides a whole impeller electrolytic forming processingequipment, which comprises a lathe bed, stand and crossbeam, be equipped with on the lathe bed along the Y axle gliding frock platform of making a round trip, workstation central point puts and is equipped with the C axle, C epaxial level is equipped with the revolving axle that is used for fixed bladed disk, be equipped with the main shaft of vertical setting on the crossbeam, the main shaft lower extreme is equipped with blade electrolysis subassembly, blade electrolysis subassembly includes first negative pole, second negative pole and two-way feed mechanism, be equipped with first C shape frock on the first negative pole, be equipped with second C shape frock on the second negative pole, all be equipped with on first C shape frock and the second C shape frock and lead electrical pillar and water pipe head, be equipped with the electrolyte runner between first negative pole and second negative pole machined surface liquid outlet and the water pipe head. The utility model discloses a two-way screw rod drives first negative pole and second negative pole and moves in opposite directions or back on the back with the same speed simultaneously, processes the blade, guarantees blade processingquality, and product machining precision is high, and equipment manufacturing cost greatly reduced does benefit to the emergence of internal electrolytic machining.

Description

Integral impeller electrolytic forming processing device

Technical Field

The invention relates to the technical field of electrolytic machining, in particular to an integral impeller electrolytic forming machining device.

Background

Electrochemical machining is a method for forming a workpiece into a predetermined size and shape by using a tool cathode based on the principle of electrochemical anodic dissolution. During the machining process, the workpiece is connected with the positive pole of a power supply, and the cathode of the tool is connected with the negative pole of the power supply. A certain interelectrode gap is maintained between the workpiece anode and the tool cathode, and an electrolyte flowing at a high speed is introduced into the interelectrode gap to form a conductive path between the workpiece and the cathode. The workpiece material is continuously dissolved and eroded along with the feeding of the cathode to the workpiece, the electrolysis product is taken away by the electrolyte flowing at high speed, and when the cathode is fed to a preset position, the processing is finished. Compared with the traditional processing technology, the electrochemical machining has the advantages of no cathode loss, wide machining range, high machining surface quality and the like, so that the electrochemical machining is widely applied to machining of aeroengine parts such as blisks, diffusers and the like.

Among the prior art, the electrolytic machining equipment of blisk processing blade is equipped with two electrolysis negative poles, a processing blade back of the leaf, a processing blade leaf basin, and two electrolysis negative poles adopt two drive independent control to process respectively, and the deviation can appear in the blade machining precision, influences product quality, and this type of equipment is mostly followed foreign introduction at present, and is expensive, and manufacturing cost is high.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, the invention provides an integral impeller electrolytic forming processing device.

The technical scheme adopted for solving the technical problems is as follows: an integral impeller electrolytic forming processing device comprises a machine tool body, a stand column and a cross beam, wherein a tool table which slides back and forth along a Y axis is arranged on the machine tool body, the cross beam is horizontally arranged above the tool table, the stand column is arranged at two ends of the cross beam, the lower end of the stand column is fixedly connected with the machine tool body, a C axis is arranged at the center of the workbench, a rotating shaft for fixing a blade disc is horizontally arranged on the C axis, a servo motor is connected onto the rotating shaft in a transmission manner, a vertically arranged main shaft is arranged on the cross beam, a blade electrolytic assembly is arranged at the lower end of the main shaft, a driving device for driving the blade electrolytic assembly to be close to or far away from the blade disc in the vertical direction is arranged on the main shaft, the blade electrolytic assembly comprises a first cathode matched with a blade back of a blade, a second cathode matched with a blade basin of the blade and a bidirectional feeding mechanism for controlling the first cathode and the second cathode to be close to or far away from each other, the bidirectional feeding mechanism is characterized in that the motion symmetrical center plane of the bidirectional feeding mechanism coincides with the rotary shaft rotary center plane, a first C-shaped tool is arranged on the first cathode, a second C-shaped tool is arranged on the second cathode, a conductive column connected with a power supply and a water pipe joint connected with electrolyte are arranged on the first C-shaped tool and the second C-shaped tool, and an electrolyte flow channel is arranged between the liquid outlet of the processing surface of the first cathode and the water pipe joint of the second cathode.

The blade disc workpiece is arranged on the rotating shaft and is in a vertical state, the workpiece is connected with the positive electrode of a power supply, and the tool table slides back and forth along the Y axis to enable the blade disc to be positioned at a correct position below the main shaft; the first C-shaped tool and the second C-shaped tool are used for arranging an electrolyte flow channel to be connected with a liquid inlet device to provide electrolyte for electrolytic machining on one hand, and are used for connecting a power supply cathode to form an electric loop with a workpiece during electrolytic machining on the other hand; the lower ends of the first C-shaped tool and the second C-shaped tool are respectively connected with a first cathode and a second cathode, and the first C-shaped tool and the second C-shaped tool are driven by a bidirectional feeding mechanism to control the first cathode and the second cathode to simultaneously move in the opposite directions or in the opposite directions at the same speed so as to carry out electrolytic machining on the blade back and the blade basin of the blade and ensure the electrolytic machining quality of the blade; the main shaft is used for driving the first cathode and the second cathode to descend.

Further, for control first negative pole and second negative pole be close to each other or keep away from, guarantee blade processingquality, two-way feed mechanism includes support, first slip table and second slip table, be equipped with the spout along the horizontal direction in the support, first slip table and second slip table all with spout sliding connection, the level is equipped with two-way screw rod in the spout, two-way screw rod passes first slip table and second slip table with first slip table and second slip table threaded connection, two-way screw rod rotates and drives first slip table and second slip table and be close to each other or keep away from, first C shape frock and first slip table fixed connection, second C shape frock and second slip table fixed connection. The first sliding table and the second sliding table are driven to be close to or far away from each other on the support through the rotation of the bidirectional screw rod, so that the first C-shaped tool and the second C-shaped tool are driven to be close to or far away from each other, and the first cathode and the second cathode are driven to be close to or far away from each other.

Further, a flow field protective cover is arranged on the tool table and arranged on the outer side of the C shaft, and a machining groove matched with the blade is formed in the upper end of the flow field protective bundle. The flow field protective cover is used for ensuring that electrolyte is not directly leaked from two sides in the electrolytic machining process of the blade, plays a certain pressure maintaining role, and enables the electrolyte to flow out from the blade root and the blade tip, so that the stable operation of the machining process can be prevented.

Furthermore, in order to control the first cathode and the second cathode to automatically advance and retreat, a servo motor is in transmission connection with the bidirectional screw rod.

Further, in order to ensure the uniform and stable feeding of the electrolyte, the first cathode and the second cathode liquid outlets are of strip-shaped structures arranged along the diagonal line of the processing surface. The shape of the cathode liquid outlet adopts a diagonal strip-shaped structure, so that the flow velocity in the whole machining gap is ensured to be uniform, and the phenomena of liquid shortage and vortex are avoided.

Further, the tool table is made of a non-conductive material with high flatness and structural strength, for example, marble can be used.

The invention has the beneficial effects that: according to the integral impeller electrolytic forming processing device provided by the invention, the bidirectional screw is adopted to drive the first cathode and the second cathode to move oppositely or back to back at the same speed, so that the blades are processed, the processing quality of the blades is ensured, the processing precision of products is high, and the manufacturing cost of equipment is greatly reduced.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1;

FIG. 3 is an enlarged schematic view of B in FIG. 2;

FIG. 4 is a schematic view of the preferred embodiment of the present invention with the addition of a flow field shield;

fig. 5 is an enlarged schematic view of C in fig. 4.

In the figure: 1. the device comprises a tool table, 2, a cross beam, 3, C shafts, 4, a blade disc, 4-1, blades, 5, a main shaft, 6, a first cathode, 7, a second cathode, 8, a first C-shaped tool, 9, a second C-shaped tool, 10, a conductive column, 11, a water pipe joint, 12, a liquid outlet, 13, a support, 14, a first sliding table, 15, a second sliding table, 16, a bidirectional screw, 17, a flow field protective cover, 17-1 and a processing groove.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1-5, the device for electrolytic forming of an integral impeller comprises a machine tool body, a column and a beam 2, wherein the machine tool body is provided with a tool table 1 which slides back and forth along a Y axis, the tool table 1 is made of marble, the beam 2 is horizontally arranged above the tool table 1, the column is arranged at two ends of the beam 2, the lower end of the column is fixedly connected with the machine tool body, a C axis 3 is arranged at the center of the workbench, a rotating axis for fixing a blade disc 4 is horizontally arranged on the C axis 3, a servo motor is connected on the rotating axis in a transmission manner, a vertically arranged main shaft 5 is arranged on the beam 2, a blade electrolytic component is arranged at the lower end of the main shaft 5, a driving device for driving the blade electrolytic component to be close to or far away from the blade disc 4 in the vertical direction is arranged on the main shaft 5, and the blade electrolytic component comprises a first cathode 6 matched with a blade back of the blade 4-1, a first cathode 6, a second cathode is arranged on the blade back of the blade 4, and a second cathode is arranged on the second shaft 2, and is arranged on the second cathode of the second shaft, and is arranged on the second shaft 3, and is arranged in the second shaft, and is arranged on the first cathode of the second shaft, and is arranged on the third shaft, the fourth shaft, With the two-way feed mechanism that 4-1 blade basin complex second negative pole 7 of blade and first negative pole 6 of control and second negative pole 7 are close to each other or keep away from, two-way feed mechanism's motion center of symmetry face coincides mutually with revolving axle centre of rotation face, be equipped with first C shape frock 8 on the first negative pole 6, be equipped with second C shape frock 9 on the second negative pole 7, all be equipped with the water pipe head 11 that leads electrical pillar 10 and connect electrolyte of connecting the power on first C shape frock 8 and the second C shape frock 9, be equipped with the electrolyte runner between first negative pole 6 and the second negative pole 7 machined surface liquid outlet 12 and the water pipe head 11, first negative pole 6 and the long strip structure that the second negative pole 7 liquid outlet 12 set up along the machined surface angular line.

Two-way feed mechanism includes support 13, first slip table 14 and second slip table 15, be equipped with the spout along the horizontal direction in the support 13, first slip table 14 and second slip table 15 all with spout sliding connection, the level is equipped with two-way screw rod 16 in the spout, two-way screw rod 16 passes first slip table 14 and second slip table 15 with first slip table 14 and 15 threaded connection of second slip table, two-way screw rod 16 rotates and drives first slip table 14 and second slip table 15 and be close to each other or keep away from, the transmission is connected with servo motor on the two-way screw rod 16, first C shape frock 8 and first slip table 14 fixed connection, second C shape frock 9 and 15 fixed connection of second slip table.

The tooling table 1 is provided with a flow field protective cover 17, the flow field protective cover 17 is covered on the outer side of the C shaft 3, and the upper end of the flow field protective bundle is provided with a processing groove 17-1 matched with the blade 4-1.

The processing method comprises the following steps:

before the machining method is adopted, the blisk 4 is subjected to grooving rough machining, namely materials in channels between the blades 4-1 are rough machined, and when the machining method is adopted, the forming precision and efficiency of the blades 4-1 are improved.

When the blisk 4 is clamped on the rotating shaft and is connected with the positive pole of the processing power supply, the first cathode 6 and the second cathode 7 are clamped on the bidirectional feeding mechanism and are connected with the negative pole of the processing power supply, and the position of the tool table 1 is adjusted, so that the blisk 4 is positioned at the correct position below the main shaft 5.

The main shaft 5 drives the first cathode 6 and the second cathode 7 to enter the inter-blade channel, electrolyte is sprayed into a machining gap from a liquid outlet 12 of the first cathode 6 and the second cathode 7, (the machining gap is a gap between the cathode and a workpiece anode, the electrolytic machining is non-contact machining), a machining power supply is turned on, a certain voltage (generally 14-24V and pulse current) is applied, the numerical control system controls the bidirectional feeding mechanism to drive the first C-shaped tool 8 and the second C-shaped tool 9 to move oppositely, namely the first cathode 6 and the second cathode 7 feed to the blade 4-1 simultaneously, under the action of an electric field and a flow field, materials on two sides of the blade 4-1 are removed by the electrolytic machining gradually, the shapes of a blade basin cathode and a blade back cathode are copied gradually, and the shape of the blade 4-1 is machined in place. After the machining is finished, the power supply and the electrolyte are turned off, the numerical control system controls the bidirectional feeding mechanism to drive the first cathode 6 and the second cathode 7 to retreat to certain safe positions, and the main shaft 5 moves upwards to return to the initial position state.

In the forming electrolytic machining process of the blade 4-1, the machining system monitors the machining current, when the current is suddenly increased (before short circuit happens), the bidirectional feeding mechanism stops advancing, and retreats to a safe value, and when the current is reduced to a normal value, machining is continued, so that the short circuit condition can be effectively controlled, the burning of a cathode is reduced, and the machining precision is improved.

Directions and references (e.g., up, down, left, right, etc.) may be used in the present disclosure only to aid in the description of features in the figures. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

In light of the foregoing description of preferred embodiments in accordance with the invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. The utility model provides a whole impeller electrolytic forming processingequipment, includes lathe bed, stand and crossbeam (2), be equipped with on the lathe bed along Y axle round trip gliding frock platform (1), crossbeam (2) level is located frock platform (1) top, the stand is located crossbeam (2) both ends, stand lower extreme and lathe bed fixed connection, its characterized in that: the center of the workbench is provided with a C shaft (3), a rotating shaft for fixing a blade disc (4) is horizontally arranged on the C shaft (3), the rotating shaft is in transmission connection with a servo motor, a vertically arranged main shaft (5) is arranged on the cross beam (2), a blade electrolysis assembly is arranged at the lower end of the main shaft (5), a driving device for driving the blade electrolysis assembly to be close to or far away from the blade disc (4) in the vertical direction is arranged on the main shaft (5), the blade electrolysis assembly comprises a first cathode (6) matched with a blade back of a blade (4-1), a second cathode (7) matched with a blade basin of the blade (4-1) and a bidirectional feeding mechanism for controlling the first cathode (6) and the second cathode (7) to be close to or far away from each other, and the motion symmetry center plane of the bidirectional feeding mechanism coincides with the rotating shaft rotation center plane, be equipped with first C shape frock (8) on first negative pole (6), be equipped with second C shape frock (9) on second negative pole (7), all be equipped with on first C shape frock (8) and second C shape frock (9) and connect electrically conductive post (10) of power and connect water pipe head (11) of electrolyte, be equipped with the electrolyte runner between first negative pole (6) and second negative pole (7) machined surface liquid outlet (12) and water pipe head (11).

2. The integrated impeller electrolytic forming processing device according to claim 1, wherein: two-way feed mechanism includes support (13), first slip table (14) and second slip table (15), be equipped with the spout along the horizontal direction in support (13), first slip table (14) and second slip table (15) all with spout sliding connection, the level is equipped with two-way screw rod (16) in the spout, two-way screw rod (16) are passed first slip table (14) and second slip table (15) with first slip table (14) and second slip table (15) threaded connection, two-way screw rod (16) rotate and drive first slip table (14) and second slip table (15) and be close to each other or keep away from, first C shape frock (8) and first slip table (14) fixed connection, second C shape frock (9) and second slip table (15) fixed connection.

3. The integrated impeller electrolytic forming processing device according to claim 2, wherein: the tooling table (1) is provided with a flow field protective cover (17), the flow field protective cover (17) is covered on the outer side of the C shaft (3), and the upper end of the flow field protective cover is provided with a processing groove (17-1) matched with the blade (4-1).

4. The integrated impeller electrolytic forming processing device according to claim 2, wherein: the bidirectional screw (16) is in transmission connection with a servo motor.

5. The integrated impeller electrolytic forming processing device according to any one of claims 1 to 4, wherein: the liquid outlets (12) of the first cathode (6) and the second cathode (7) are of strip-shaped structures arranged along the diagonal line of the processing surface.

6. The integrated impeller electrolytic forming processing device according to claim 1, wherein: the tool table (1) is made of a non-conductive material with high flatness and structural strength.

7. The integrated impeller electrolytic forming processing device according to claim 6, wherein: the tool table (1) is made of marble.

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