A vibration electrolytic forming processing device for an integral blade disk

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

Technical Field

[0001] The invention relates to the technical field of electrolytic machining, and in particular to a vibration-type electrolytic forming machining device for an integral blade disk. Background Art

[0002] Electrolytic machining is a method based on the principle of electrochemical anode dissolution, which uses the tool cathode to process the workpiece into a predetermined size and shape. During the machining process, the workpiece is connected to the positive pole of the power supply, and the tool cathode is connected to the negative pole of the power supply. A certain inter-electrode gap is maintained between the workpiece anode and the tool cathode, and a high-speed flowing electrolyte is passed into the inter-electrode 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, and the electrolysis products are carried away by the high-speed flowing electrolyte. When the cathode is fed to the predetermined position, the machining is completed. Compared with traditional machining technology, electrolytic machining has the advantages of no cathode loss, a wide machining range, and high machining surface quality. Therefore, it is widely used in the machining of aircraft engine parts such as integral blades and diffusers.

[0003] In the prior art, the electrolytic processing equipment for processing blades of the integral blade disk is provided with two electrolytic cathodes, one for processing the back of the blade and the other for processing the blade base. The two electrolytic cathodes are continuously approached to the blade under the control of the driving mechanism, and the electrolyte is sprayed into the processing gap. Under the action of the electric field and the flow field, the materials on both sides of the blade are gradually removed by electrolytic processing. However, when the processing gap is too small, it is difficult to spray the electrolyte, resulting in a large amount of heat during electrolytic processing that is difficult to discharge. If the processing gap is too small, it is easy to cause a short circuit and cause the cathode to burn, affecting the production speed and production quality. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the prior art, the present invention provides a vibration-type electrolytic forming processing device for an integral blade disk.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a vibration electrolytic forming processing device for an integral blade disk, including a workbench arranged on a bed, the workbench can slide along the Y-axis direction, a C-axis is provided on the workbench, a rotary axis for fixing the blade disk is provided on the C-axis along the Y-axis direction, a bracket is provided above the workbench, the bracket is provided with a main shaft for driving the bracket to move along the Z-axis, 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 provided on the two cathodes, and a vibration component for driving the cathodes to vibrate reciprocatingly along the X-axis direction is also provided on the two cathodes.

[0006] The blade disk workpiece is installed on the rotating shaft in a vertical state. The workpiece is connected to the positive pole of the power supply, and the cathode is connected to the negative pole of the power supply. The tooling table slides back and forth along the Y axis to make the blade disk in the correct position below the spindle; the spindle is used to drive the cathode to approach the blade disk along the Z axis, that is, the vertical direction; during the electrolytic processing of the blade, the drive component drives the two cathodes to approach each other to perform electrolytic processing on the blade basin and blade back. Driven by the vibration mechanism, the cathodes of the blade basin and blade back make reciprocating motions with a certain amplitude, that is, the cathode feeds the blade material while continuously reciprocating; when the cathode feeds the blade blank, due to the small processing gap and large processing area, in a certain vibration cycle, when the cathode approaches the blade, the blade surface material is gradually electrolytically removed, and when the cathode vibrates away from the blade, the processing gap is enlarged, which can quickly remove the heat and electrolytic products generated during the processing, so that the electrolyte is effectively updated to prepare for the next processing cycle. This can effectively improve the surface quality and forming accuracy of the processing.

[0007] In vibration electrolytic machining, the power supply for electrolytic machining is time-sharing. In a cycle of reciprocating vibration of the cathode, when the cathode moves toward the blade, the power supply is powered and provides group pulses. At this time, the surface material of the blade blank undergoes electrolytic machining and is gradually removed. When the cathode vibrates away from the blade, the electrolytic machining power supply stops supplying power. At this time, the electrolytic reaction stops, and the distance between the cathode and the blade is increased, which facilitates the discharge of the electrolytic products.

[0008] Furthermore, in order to drive the cathode to vibrate reciprocatingly, the vibration assembly includes a first slide and a second slide, the first slide is provided with a cavity, the second slide is arranged in the cavity, the lower end of the second slide is connected to the cathode, the side wall of the cavity is provided with a slide rail cooperating with the second slide, the axis of the slide rail is arranged along the X-axis direction, the side of the second slide away from the slide rail is provided with two parallel limit bars, the axis of the limit bar is arranged along the Z-axis direction, a vibration motor is provided on the side wall of the first slide close to the limit bar, the output end of the vibration motor extends between the two limit bars, and the output end of the vibration motor is provided with a cam cooperating with the two limit bars.

[0009] The vibration motor rotates to drive the cam to rotate continuously. During the rotation of the cam, the limit strips on both sides are continuously moved to make the second slide slide back and forth on the slide rail.

[0010] Furthermore, in order to bring the two cathodes close to each other to perform electrolytic machining on the blade base and blade back, the driving assembly includes a servo motor and a lead screw, the first slide is slidably connected to the bracket along the X-axis, the two ends of the lead screw are rotatably connected to the bracket, the lead screw passes through the first slide and is threadedly connected to the first slide, and the servo motor is arranged on the bracket and is connected to the lead screw. The forward and reverse rotation of the servo motor drives the lead screw to rotate forward and reverse, thereby driving the cathode close to or away from the blade.

[0011] Furthermore, the cathode includes a C-shaped extension and an electrode head, the upper end of the C-shaped extension is connected to the second slide, the lower end of the C-shaped extension is connected to the electrode head, a water outlet is provided on the electrode head, a water inlet is provided on the second slide, and a liquid inlet channel connecting the water inlet and the water outlet is provided in the C-shaped extension. The water inlet is provided on the second slide, and the second slide will not affect the supply of electrolyte when it is reciprocatingly vibrating. The electrolyte is sprayed from the cathode water outlet into the processing gap (the processing gap is the gap between the cathode and the anode of the workpiece, and the electrolytic processing is non-contact processing). Turn on the processing power supply, apply a certain voltage (generally 14 to 24V, pulse current), control the drive control of the two cathodes to move towards each other, that is, the blade basin cathode and the blade back cathode are fed to the blade at the same time, and under the action of the electric field and flow field, the materials on both sides of the blade are gradually removed by electrolytic processing.

[0012] Furthermore, in order to machine a circle of blades on the blade disk blank, one electrode head on the two cathodes cooperates with the blade back and the other cooperates with the blade basin. The two cathodes cooperate with each other to machine a blade, and the rotary shaft rotates a certain angle to machine a circle of blades on the blade disk blank.

[0013] Furthermore, the workbench is made of a non-conductive material with high flatness and high structural strength, such as marble.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a vibration electrolytic forming processing device for an integral blade disk, in which a vibration component and a drive component are arranged on the cathode. During the blade processing, when the cathode vibrates close to the blade, the surface material of the blade is gradually electrolytically removed, and when the cathode vibrates away from the blade, the processing gap is enlarged, which can quickly remove the heat and electrolysis products generated during the processing, so that the electrolyte is effectively updated, preventing the cathode from being burned out, and effectively improving the processing quality of the blades of the blade disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the best embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A is an enlarged schematic diagram;

[0018] Figure 3 It is a structural schematic diagram of the vibration component.

[0019] In the figure: 1. workbench, 2. C-axis, 3. blisk, 3-1. blade, 4. bracket, 5. main shaft, 6. cathode, 6-1. C-shaped extension, 6-2. electrode head, 7. first slide, 8. second slide, 9. slide rail, 10. limit strip, 11. vibration motor, 12. cam, 13. servo motor, 14. screw, 15. water inlet nozzle. DETAILED DESCRIPTION

[0020] The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0021] like Figure 1-3 As shown, a vibration-type electrolytic forming processing device for an integral blade disk of the present invention comprises a workbench 1 arranged on a bed, the workbench 1 is made of marble, the workbench 1 can slide along the Y-axis direction, a C-axis 2 is provided on the workbench 1, a rotary axis for fixing the blade disk 3 is provided on the C-axis 2 along the Y-axis direction, a bracket 4 is provided above the workbench 1, a main shaft 5 for driving the bracket 4 to move along the Z-axis is provided on the bracket 4, two cathodes 6 arranged opposite to each other are slidably connected to the bracket 4, the two cathodes 6 are respectively matched with the back and the basin of the blade 3-1, a driving component for driving the two cathodes 6 to approach or move away from each other along the X-axis direction is provided 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 provided on the two cathodes 6.

[0022] The vibration assembly includes a first slide 7 and a second slide 8. The first slide 7 is provided with a cavity, the second slide 8 is arranged in the cavity, the lower end of the second slide 8 is connected to the cathode 6, the side wall of the cavity is provided with a slide rail 9 that cooperates with the second slide 8, the axis of the slide rail 9 is arranged along the X-axis direction, the side of the second slide 8 away from the slide rail 9 is provided with two parallel limit bars 10, 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 the output end of the vibration motor 11 is provided with a cam 12 that cooperates with the two limit bars 10.

[0023] The driving assembly includes 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.

[0024] The cathode 6 includes 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, and 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, and 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.

[0025] Working process:

[0026] The blade disk 3 blank is installed on the rotating axis of the C-axis 2, and the workbench 1 moves along the Y-axis to move the blade disk 3 to the bottom of the cathode 6. The main shaft 5 drives the cathode 6 to descend. During the electrolytic processing of the blade 3-1, the servo motors 13 on both sides of the bracket 4 drive the two lead screws 14 to rotate, thereby driving the two cathodes 6 to move toward each other. When the mechanism drives the two first slides 7 to feed the blade 3-1 (that is, when the blade 3-1 is subjected to finishing processing), the cathodes 6 on the blade basin and the back of the blade are driven by the vibration mechanism to make a left and right reciprocating motion with a certain amplitude, that is, the cathode 6 feeds the material to the blade 3-1 while continuously vibrating back and forth along the X-axis.

[0027] In vibration electrolytic machining, the power supply for electrolytic machining is time-sharing. In a cycle of reciprocating vibration of cathode 6, when cathode 6 moves toward blade 3-1, the power supply is powered and provides group pulses. At this time, the surface material of blade 3-1 blank undergoes electrolytic machining and is gradually removed. When cathode 6 vibrates away from blade 3-1, the electrolytic machining power supply stops supplying power. At this time, the electrolytic reaction stops, and the distance between cathode 6 and blade 3-1 is enlarged, which is convenient for the discharge of electrolytic products.

[0028] Directions and references (e.g., up, down, left, right, etc.) in the present invention may only be used to assist in the description of features in the accompanying drawings. Therefore, the following detailed description is not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0029] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the scope of the present invention through the above description. The technical scope of this invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A vibration electrolytic forming processing device for an integral blade disk, characterized in that: The invention comprises a tooling table (1) arranged on a bed, wherein 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 a blade 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 axis (5) for driving the bracket (4) to move along the Z-axis is arranged on the bracket (4), two cathodes (6) arranged opposite to each other 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. The vibration electrolytic forming processing device of an integral blade disk according to 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 base of the blade (3-1).

3. The vibration electrolytic forming processing device of an integral blade disk according to claim 1, characterized in that: The workbench (1) is made of a non-conductive material such as marble, which has high flatness and high structural strength.

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