CN112296457B

CN112296457B - A vibration electrolytic forming processing device for an integral blade disk

Info

Publication number: CN112296457B
Application number: CN202011266448.XA
Authority: CN
Inventors: 夏任波; 徐波; 夏健波
Original assignee: Changzhou Xinjiang Intelligent Equipment Co ltd
Current assignee: Changzhou Xinjiang Intelligent Equipment Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2025-01-07
Anticipated expiration: 2040-11-13
Also published as: CN112296457A

Abstract

The present invention provides a vibration-type electrolytic forming processing device for an integral leaf disk, comprising a workbench arranged on a bed, the workbench can slide along the Y-axis direction, a C-axis is arranged on the workbench, a rotary axis for fixing the leaf disk is arranged along the Y-axis direction on the C-axis, a bracket is arranged above the workbench, a main shaft for driving the bracket to move along the Z-axis is arranged on the bracket, two cathodes arranged opposite to each other are slidably connected on the bracket, a driving component for driving the two cathodes to approach or move away from each other along the X-axis direction is arranged on the bracket, and a vibration component for driving the cathodes to reciprocate along the X-axis direction is also arranged on the two cathodes. The present invention provides a vibration-type electrolytic forming processing device for an integral leaf disk, which adopts a vibration component and a driving component arranged on the cathode, and can quickly remove the heat and electrolytic products generated during the processing, so that the electrolyte is effectively renewed, the cathode is prevented from being burned, and the processing quality of the leaf disk blades is effectively improved.

Description

Vibrating electrolytic forming processing device for blisk

Technical Field

The invention relates to the technical field of electrolytic machining, in particular to a vibrating electrolytic forming machining device for a blisk.

Background

Electrolytic machining is a method for machining and forming a workpiece in a predetermined size and shape using a tool cathode based on the electrochemical anodic dissolution principle. In the machining process, the workpiece is connected with the positive electrode of the power supply, and the cathode of the tool is connected with the negative electrode of the power supply. A certain interelectrode gap is maintained between the workpiece anode and the tool cathode, and electrolyte flowing at a high speed is introduced into the interelectrode gap to form a conductive path between the workpiece and the cathode. As the cathode is fed to the workpiece, the workpiece material is continuously dissolved and eroded, the electrolytic product is carried away by the high-speed flowing electrolyte, and when the cathode is fed to a preset position, the processing is completed. Compared with the traditional processing technology, the electrolytic processing has the advantages of no cathode loss, wide processing range, high processing surface quality and the like, and therefore, the electrolytic processing is widely applied to processing aeroengine parts such as blisks, diffusers and the like.

In the prior art, an electrolytic machining device for machining blades of a blisk is provided with two electrolytic cathodes, one for machining blade backs and one for machining blade pots, the two electrolytic cathodes are continuously close to the blades under the control of a driving mechanism, electrolyte is sprayed into a machining gap, and materials on two sides of the blades are gradually removed by electrolytic machining under the action of an electric field and a flow field. However, when the machining gap is too small, the electrolyte is difficult to spray out, so that a large amount of heat is not easy to discharge during electrolytic machining, and the cathode is burnt out due to short circuit caused by too small machining gap, so that the production speed and the production quality are affected.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art, and provides a vibrating electrolytic forming processing device of a blisk.

The technical scheme includes that the vibrating electrolytic forming machining device for the blisk comprises a tool table arranged on a lathe bed, the tool table can slide along the Y-axis direction, a C-axis is arranged on the tool table, a rotary shaft for fixing the blisk is arranged on the C-axis along the Y-axis direction, a support is arranged above the tool table, a main shaft for driving the support to move along the Z-axis is arranged on the support, two cathodes which are oppositely arranged are connected with each other in a sliding manner, a driving assembly for driving the two cathodes to approach or separate from each other along the X-axis direction is arranged on the support, and a vibrating assembly for driving the cathodes to vibrate in a reciprocating manner along the X-axis direction is also arranged on the two cathodes.

The blade disc workpiece is arranged on a rotating shaft and is in a vertical state, the workpiece is connected with a positive electrode of a power supply, a cathode is connected with a negative electrode of the power supply, a tool table slides back and forth along a Y axis to enable the blade disc to be positioned at a correct position below a main shaft, the main shaft is used for driving the cathode to be close to the blade disc along a Z axis, namely in the vertical direction, in the forming electrolytic machining process of a blade, a driving assembly drives two cathodes to be close to each other to carry out electrolytic machining on a blade basin and a blade back, the blade basin and the blade back cathode are driven by a vibrating mechanism to do reciprocating motion with a certain amplitude, namely the cathodes continuously do reciprocating vibration while feeding blade materials, when the cathodes feed to a blade blank, the machining gap is small, the machining area is large, when the cathodes approach to the blade in a certain vibration period, the blade surface materials are gradually removed by electrolysis, and when the cathodes vibrate away from the blade, the machining gap is large, heat and electrolytic products generated in the machining process can be rapidly removed, so that the electrolytic solution is effectively updated, and preparation is made for the next machining period. Thus, the surface quality, the forming precision and the like of the processing can be effectively improved.

In vibration electrolytic machining, the power supply for electrolytic machining is powered in a time-sharing mode, in a cycle of reciprocating vibration of the cathode, when the cathode moves to the blade, the power supply supplies power, and group pulses are provided, at the moment, electrolytic machining is carried out on the surface material of the blank of the blade so as to gradually remove the material, when the cathode vibrates away from the blade, the power supply for electrolytic machining stops supplying power, at the moment, electrolytic reaction stops, the distance between the cathode and the blade is increased, and electrolytic products are discharged conveniently.

Further, in order to drive the reciprocal vibration of negative pole, vibration assembly includes first slip table and second slip table, be equipped with the cavity in the first slip table, in the cavity was located to the second slip table, the second slip table lower extreme is connected with the negative pole, be equipped with on the cavity lateral wall with second slip table complex slide rail, the slide rail axis sets up along the X axis direction, one side that the slide rail was kept away from to the second slip table is equipped with two parallel arrangement's spacing, spacing axis sets up along the Z axis direction, be equipped with vibrating motor on the lateral wall that first slip table is close to spacing, the vibrating motor output extends to between two spacing, be equipped with on the vibrating motor output with two spacing complex cams.

The vibration motor rotates to drive the cam to rotate continuously, and in the cam rotating process, the limiting strips on the two sides are continuously stirred, so that the second sliding table slides back and forth on the sliding rail.

Further, for the electrolytic machining is carried out to blade basin and leaf back that two cathodes are close to each other, drive assembly includes servo motor and lead screw, first slip table and support are along X axle sliding connection, the lead screw both ends are connected with the support rotation, the lead screw passes first slip table and first slip table threaded connection, servo motor locates on the support with lead screw transmission connection. The servo motor rotates forward and reversely to drive the screw rod to rotate forward and reversely, so that the cathode is driven to approach or depart from the blade.

Further, the cathode comprises a C-shaped extension part and an electrode head, the upper end of the C-shaped extension part is connected with the second sliding table, the lower end of the C-shaped extension part is connected with the electrode head, a water outlet is formed in the electrode head, a water inlet nozzle is arranged on the second sliding table, and a liquid inlet channel communicated with the water inlet nozzle and the water outlet is arranged in the C-shaped extension part. The water inlet nozzle is arranged on the second sliding table, when the second sliding table vibrates reciprocally, the supply of electrolyte is not affected, the electrolyte is sprayed out from the cathode water outlet into the processing gap (the processing gap is a gap between the cathode and the workpiece anode, the electrolytic processing is non-contact processing), a processing power supply is turned on, a certain voltage (generally 14-24V, pulse current) is applied, the two cathodes are controlled to be driven and controlled to move in opposite directions, namely, the cathode of the leaf basin and the cathode of the leaf back are simultaneously fed to the blade, and materials on two sides of the blade are gradually processed by the electrolytic processing under the action of an electric field and a flow field so as to be removed.

Further, in order to process a circle of blades on the impeller blank, one electrode tip on the two cathodes is matched with the blade back, and the other electrode tip is matched with the blade basin. The two cathodes are matched with each other to process a blade, and the rotary shaft rotates for a certain angle to process a circle of blades on the impeller blank.

Further, the tool table is made of non-conductive materials such as marble and the like with high flatness and high structural strength.

The vibrating electrolytic forming machining device for the blisk has the beneficial effects that the vibrating assembly and the driving assembly are arranged on the cathode, when the cathode vibration approaches to the blade in the blade machining process, the surface material of the blade is gradually electrolyzed and removed, and when the cathode vibration leaves the blade, the machining gap is enlarged, so that heat and electrolytic products generated in the machining process can be rapidly removed, the electrolyte is effectively updated, the cathode is prevented from being burnt out, and the machining quality of the blisk blade is effectively improved.

Drawings

The invention is further described below with reference to the drawings and examples.

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

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

Fig. 3 is a schematic structural view of a vibration assembly.

In the figure, 1, a tool table, 2, a C shaft, 3, a blade disc, 3-1, a blade, 4, a bracket, 5, a main shaft, 6, a cathode, 6-1, a C-shaped extension part, 6-2, an electrode head, 7, a first sliding table, 8, a second sliding table, 9, a sliding rail, 10, a limit bar, 11, a vibration motor, 12, a cam, 13, a servo motor, 14, a lead screw, 15 and a water inlet nozzle.

Detailed Description

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

As shown in figures 1-3, the vibrating electrolytic forming machining device for the blisk comprises a tool table 1 arranged on a lathe bed, wherein the tool table 1 is made of marble, the tool table 1 can slide along the Y-axis direction, a C-axis 2 is arranged on the tool table 1, a rotary shaft for fixing the blisk 3 is arranged on the C-axis 2 along the Y-axis direction, a support 4 is arranged above the tool table 1, a main shaft 5 for driving the support 4 to move along the Z-axis is arranged on the support 4, two cathodes 6 are arranged on the support 4 in a sliding manner, the two cathodes 6 are respectively matched with a blade back and a blade basin of the blade 3-1, a driving component for driving the two cathodes 6 to mutually approach or separate along the X-axis direction is arranged on the support 4, and a vibrating component for driving the cathodes 6 to vibrate reciprocally along the X-axis direction is also arranged on the two cathodes 6.

The vibration subassembly includes first slip table 7 and second slip table 8, be equipped with the cavity in the first slip table 7, second slip table 8 is located in the cavity, second slip table 8 lower extreme is connected with cathode 6, be equipped with on the cavity lateral wall with second slip table 8 complex slide rail 9, slide rail 9 axis sets up along the X axle direction, one side that slide rail 9 was kept away from to second slip table 8 is equipped with two parallel arrangement's spacing 10, spacing 10 axis sets up along the Z axle direction, be equipped with vibrating motor 11 on the lateral wall that first slip table 7 is close to spacing 10, vibrating motor 11 output extends to between two spacing 10, be equipped with on the vibrating motor 11 output with two spacing 10 complex cams 12.

The driving assembly comprises a servo motor 13 and a screw rod 14, the first sliding table 7 is in sliding connection with the support 4 along the X axis, two ends of the screw rod 14 are in rotary connection with the support 4, the screw rod 14 penetrates through the first sliding table 7 to be in threaded connection with the first sliding table 7, and the servo motor 13 is arranged on the support 4 and is in transmission connection with the screw rod 14.

The cathode 6 comprises a C-shaped extension part 6-1 and an electrode tip 6-2, the upper end of the C-shaped extension part 6-1 is connected with a second sliding table 8, the lower end of the C-shaped extension part 6-1 is connected with the electrode tip 6-2, a water outlet is arranged on the electrode tip 6-2, a water inlet nozzle 15 is arranged on the second sliding table 8, and a liquid inlet channel which is communicated with the water inlet nozzle 15 and the water outlet is arranged in the C-shaped extension part 6-1.

The working process comprises the following steps:

The blank of the blade disc 3 is arranged on a rotating shaft of the C shaft 2, the tool table 1 moves along the Y shaft, the blade disc 3 moves below the cathode 6, the main shaft 5 drives the cathode 6 to descend, the servo motors 13 at two sides of the bracket 4 drive the two lead screws 14 to rotate in the forming electrolytic machining process of the blade 3-1, so that the two cathodes 6 are driven to move in opposite directions, when the mechanism drives the two first sliding tables 7 to feed the blade 3-1 (namely, when the forming finish machining of the blade 3-1 is carried out), the blade basin and the blade back cathode 6 do left-right reciprocating motion with a certain amplitude under the driving of the vibrating mechanism, namely, the cathode 6 continuously do reciprocating vibration along the X shaft while feeding the blade 3-1.

In vibration electrolytic machining, the power supply for electrolytic machining is in a time-sharing power supply, and in one period of reciprocating vibration of the cathode 6, when the cathode 6 moves towards the blade 3-1, the power supply supplies power, and group pulses are provided, at the moment, the surface material of the blank of the blade 3-1 is subjected to electrolytic machining and gradually removed, when the cathode 6 vibrates away from the blade 3-1, the power supply for electrolytic machining stops, at the moment, the electrolytic reaction stops, the distance between the cathode 6 and the blade 3-1 is increased, and the discharge of electrolytic products is facilitated.

Directions and references (e.g., up, down, left, right, etc.) in this invention may be used only to aid in the description of features in the drawings. 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.

While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A vibration-type electrolytic forming processing device for an integral leaf disk, characterized in that: it comprises a tooling table (1) arranged on a bed, the tooling table (1) can slide along the Y-axis direction, a C-axis (2) is arranged on the tooling table (1), a rotary axis for fixing the leaf disk (3) is arranged on the C-axis (2) along the Y-axis direction, a bracket (4) is arranged above the tooling table (1), a main shaft (5) for driving the bracket (4) to move along the Z-axis is arranged on the bracket (4), two cathodes (6) arranged oppositely are slidably connected to the bracket (4), a driving component for driving the two cathodes (6) to move closer to or away from each other along the X-axis direction is arranged on the bracket (4), and a vibration component for driving the cathodes (6) to vibrate back and forth along the X-axis direction is also arranged on the two cathodes (6);

The vibration assembly comprises a first slide (7) and a second slide (8), wherein a cavity is provided in the first slide (7), the second slide (8) is provided in the cavity, the lower end of the second slide (8) is connected to the cathode (6), a slide rail (9) cooperating with the second slide (8) is provided on the side wall of the cavity, the axis of the slide rail (9) is arranged along the X-axis direction, two parallel limit bars (10) are provided on the side of the second slide (8) away from the slide rail (9), the axis of the limit bar (10) is arranged along the Z-axis direction, a vibration motor (11) is provided on the side wall of the first slide (7) close to the limit bar (10), the output end of the vibration motor (11) extends between the two limit bars (10), and a cam (12) cooperating with the two limit bars (10) is provided on the output end of the vibration motor (11);

The driving assembly comprises a servo motor (13) and a lead screw (14); the first slide (7) is slidably connected to the bracket (4) along the X-axis; both ends of the lead screw (14) are rotatably connected to the bracket (4); the lead screw (14) passes through the first slide (7) and is threadedly connected to the first slide (7); the servo motor (13) is arranged on the bracket (4) and is transmission-connected to the lead screw (14);

The cathode (6) comprises a C-shaped extension portion (6-1) and an electrode head (6-2); the upper end of the C-shaped extension portion (6-1) is connected to the second slide (8); the lower end of the C-shaped extension portion (6-1) is connected to the electrode head (6-2); a water outlet is provided on the electrode head (6-2); a water inlet nozzle (15) is provided on the second slide (8); and a liquid inlet channel connecting the water inlet nozzle (15) and the water outlet is provided in the C-shaped extension portion (6-1).

2. A vibration electrolytic forming processing device for an integral blade disk as described in claim 1, characterized in that one of the electrode heads (6-2) on the two cathodes (6) cooperates with the back of the blade (3-1), and the other cooperates with the blade basin (3-1).

3. A vibration electrolytic forming processing device for an integral blade disk as described in claim 1, characterized in that the tooling table (1) is made of a non-conductive material with high flatness and high structural strength such as marble.