Tooling and technology for flushing cooling in small holes of high-inductance blades using electro-machined materials

Abstract

The present invention discloses a tool and process for flushing and cooling the inner holes of high-guide vane electro-machined small holes. The tool comprises a tool mainboard, on the surface of which are mounted limit pins, limit columns, connecting columns, locking columns, and support columns. Removable pressure blocks are mounted on the tops of the connecting columns and locking columns. A main flow channel that does not penetrate the tool mainboard is machined inwardly on one side of the tool mainboard. Several branch flow channels connected to the main flow channel are also formed on the side of the tool mainboard adjacent to the side where the main flow channel is machined. Several water spray holes are formed on the surface of the tool mainboard, each of which is connected to its corresponding main flow channel and branch flow channel. Plugs are installed at the openings of the branch flow on the side wall of the tool mainboard. The present invention can effectively perform stable clamping processing on high-guide vanes, and the design of the internal water spray method is combined with the external water spray cooling provided by the electric spark small hole machine tool, effectively improving the surface processing quality of the high-guide vanes and improving the punching efficiency of the electric spark small hole machine tool.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a water flushing cooling processing tool and process for electrically processing a small hole in a high-guide vane. Background Art

[0002] There are many tiny holes on the surface of high-conductivity blades that need to be processed. Currently, the high-conductivity blades are fixed with tooling and then processed using an EDM small-hole machine with electric breakdown perforation technology. When processing small holes, the machine tool has its own external flushing water to cool the surface of the part. However, during the processing, the external flushing water cannot reach the cavity inside the blade, resulting in slow electrode exit, blackening of the inner surface of the part, obvious ablation marks, and an increase in the remelting layer after processing, which in turn prolongs the small hole processing time. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned existing technologies and provide a water-cooling processing tool and process for the electro-machined small holes of high-guide vanes, which can effectively improve the efficiency of small hole processing and improve the surface quality of the parts after processing.

[0004] The technical solution adopted by the present invention is: a water-flushing cooling processing tool for the electric machining of small holes in high-guide vanes, comprising a tooling mainboard, two transversely aligned limit pins are installed on one side surface of the tooling mainboard, one of the limit pins is provided with a limit column in the longitudinal direction, the bottom of the limit column is fixedly connected to the tooling mainboard, the top of the limit column is spherical, and a connecting column and a locking column are also installed on the tooling mainboard, and a detachable pressure block is installed on the top of the connecting column and the locking column, and a pressure block is provided at a position corresponding to the locking column. A locking bolt matching the locking column, the shape of the pressure block matching the hollow part of the high guide blade, and support columns matching the high guide blade are respectively installed near the connecting column and the two limit pins on the surface of the tooling main board. When one side of the high guide blade is fitted with the two limit pins and the other side is fitted with the top of the limit column, the connecting column and the locking column are located below the hollow part of the high guide blade. At this time, the pressure block is installed behind the connecting column and the locking column, and the pressure block matches the hollow part of the high guide blade and presses the high guide blade onto the support column;

[0005] A main flow channel that does not pass through the tooling main board is processed inward on one side of the tooling main board, and several branch flow channels are opened on the side of the tooling main board where the main flow channel is processed and the side adjacent to it. The center lines of the main flow channel and the several branch flow channels are located in the same horizontal plane, and each branch flow channel passes through the main flow channel. Several water spray holes are vertically opened on the surface of the tooling main board corresponding to the main flow channel and the several branch flow channels. Each water spray hole is connected to its corresponding main flow channel and branch flow channel, and plugs are installed at the openings of the branch flow on the side wall of the tooling main board.

[0006] Preferably, the main channel is arranged along the length direction of the tooling main board, and a quick connector is installed at the inlet of the main channel on the tooling main board.

[0007] Preferably, there are five branch channels, and 11 water spray holes are opened on the main channel and the branch channel, and the 11 water spray holes respectively correspond to the small holes in the inner cavity to be processed of the high guide vane.

[0008] The beneficial effects of the present invention are:

[0009] (1) The high guide vane can be quickly positioned on the tooling mainboard through two limit pins and one limit column. At the same time, the high guide vane is limited in the XY axis direction through the longitudinal corresponding limit pins and limit columns.

[0010] (2) The detachable pressure block is quickly installed on the connecting column and the locking column after the high guide vane is positioned, and the pressure block is used to press the high guide vane by the hexagon socket bolt and the locking column, thereby limiting the high guide vane in the Z-axis direction;

[0011] (3) A main channel and a branch channel are provided to facilitate water injection into the interior of the tooling main board. At the same time, a water spray hole connected to the main channel and the branch channel is opened on the surface of the tooling main board, so that the water injected into the tooling main board is sprayed out from the water spray hole. Several water spray holes correspond to the small holes to be processed in the high-conductivity blades, so that water can be sprayed to cool the outlet of the inner cavity of the high-conductivity blades during electrospark perforation, which effectively improves the surface processing quality of the high-conductivity blades and improves the processing efficiency of the small holes.

[0012] The present invention can effectively perform stable clamping processing on high guide vanes, and designs an internal water spray method combined with the external water spray cooling of the electric spark small hole machine tool, effectively improving the surface processing quality of the high guide vanes and improving the punching efficiency of the electric spark small hole machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 It is a front view of the present invention;

[0015] Figure 3 For the present invention Figure 2 Cross-sectional view of AA;

[0016] Figure 4 It is a schematic diagram of the use of the present invention;

[0017] Figure 5 This is a schematic diagram of the position limiting structure of the present invention (the tooling mainboard is not shown).

[0018] In the figure: 1. Tooling main board; 2. Limit pin; 3. Limit column; 4. Connecting column; 5. Locking column; 6. Locking bolt; 7. Pressure block; 8. Support column; 9. Main channel; 10. Branch channel; 11. Water spray hole; 12. Plug; 13. Quick connector. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, the water flushing and cooling processing tool for the electric machining of high guide vanes in a small hole provided in this embodiment includes a tool main board 1, and two transversely aligned limit pins 2 are installed on the surface of one side of the tool main board 1, and a limit column 3 is provided in the longitudinal direction of one limit pin 2. By fitting one side of the high guide vane with the two transversely aligned limit pins 2, rapid positioning is completed in the Y direction, and at the same time, the two limit pins 2 and the high guide vane are limited in the Y direction; the side of the high guide vane that fits with the limit pin 2 forms an acute angle with the side adjacent to it, so that after being limited by the limit pin 2, this corner of the high guide vane is translated toward the direction of the limit column 3, and this corner will extend between the longitudinally aligned limit pin 2 and the limit column 3. When it is translated until the limit column 3 fits with the other side of the high guide vane, the rapid positioning of the high guide vane is completed, and at the same time, the limit column 3 also limits the high guide vane in the X-axis direction; the top of the limit column 3 is spherical, which can better provide limiting support with the side of the high guide vane;

[0022] The tooling main board 1 is also equipped with a connecting column 4, a locking column 5 and several supporting columns 8. When the high guide blade is positioned and limited by the limit pin 2 and the limit column 3, the connecting column 4 and the locking column 5 are located in the hollow part on the high guide blade. By providing a pressure block 7 that matches the hollow part of the high guide blade, and opening a through hole that matches the connecting column 4 and the locking column 5 on the pressure block 7, the pressure block 7 is pressed on the high guide blade through the connecting column 4 and the locking column 5 to complete the limitation of the high guide blade in the Z-axis direction, and then the locking bolt 6 cooperates with the top of the locking column 5 to lock the pressure block 7 on the high guide blade to complete the fixation of the high guide blade; in this embodiment, there are three support columns 8, and three-point support is adopted for the high guide blade similar to a parallelogram, which ensures the stability of the high guide blade after the pressure block 7 is pressed;

[0023] A main flow channel 9 that does not pass through the tooling main board 1 is processed inward on one side of the tooling main board 1 along the length direction of the tooling main board 1. Several branch channels 10 are also opened on the side of the tooling main board 1 where the main flow channel 9 is processed and the side adjacent to it. In this embodiment, 5 branch flows are provided, and the center lines of the main flow channel 9 and the several branch channels 10 are located in the same horizontal plane, and each branch channel 10 passes through the main flow channel 9 and is connected to the main flow channel 9. Eleven water spray holes 11 are vertically opened on the surface of the tooling main board 1 corresponding to the main flow channel 9 and the several branch channels 10. Each water spray hole 11 is connected to its corresponding main flow channel 9 and branch channel 10, and each water spray hole 11 corresponds to the inner cavity surface of the small hole to be processed of the high guide blade to be clamped. The openings of the branch flow on the side wall of the tooling main board 1 are installed with plugs 12, and a quick connector 13 is installed at the inlet of the main flow channel 9 on the tooling main board 1.

[0024] While stably completing the clamping of the high-guide vane, the present invention cooperates with the electric spark small-hole machine to perform micro-hole processing on the high-guide vane. The cooling water nozzle of the electric spark small-hole machine sprays toward the processing front of the high-guide vane. The main channel 9 and the branch channel 10 designed by the present invention provide water for the water spray hole 11, so that an upward fountain is formed at the water spray hole 11, which corresponds to the back of the microhole to be processed at the high-guide vane. When the electric spark small-hole machine processes to the microhole outlet, the cooling water sprayed from the water spray hole 11 can cool the microhole outlet, thereby avoiding the blackening of the inner surface of the microhole processed by the high-guide vane, reducing the ablation marks, reducing the remelting layer after the high-guide vane is electrically processed, and improving the efficiency of microhole processing and the quality of surface processing.

[0025] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any modification and replacement based on the technical solution and inventive concept provided by the present invention should be included in the protection scope of the present invention.

Claims

1. A water flushing and cooling tool for high-inductance blade electro-machined small holes, characterized by: The utility model comprises a tooling main board (1), wherein two horizontally aligned limit pins (2) are installed on one side surface of the tooling main board (1), a limit column (3) is provided on the longitudinal direction of one limit pin (2), the bottom of the limit column (3) is fixedly connected to the tooling main board (1), and the top of the limit column (3) is spherical. A connecting column (4) and a locking column (5) are also installed on the tooling main board (1), and a detachable pressure block (7) is installed on the top of the connecting column (4) and the locking column (5), and a locking bolt (6) matching the locking column (5) is provided on the pressure block (7) at a position corresponding to the locking column (5). The shape of the pressing block (7) matches the hollow portion of the high guide vane, and support columns (8) matching the high guide vane are respectively installed near the connecting column (4) and the two limit pins (2) on the surface of the tooling main board (1). When one side of the high guide vane is fitted with the two limit pins (2) and the other side is fitted with the top of the limit column (3), the connecting column (4) and the locking column (5) are located below the hollow portion of the high guide vane. At this time, after the pressing block (7) is installed on the connecting column (4) and the locking column (5), the pressing block (7) matches the hollow portion of the high guide vane and presses the high guide vane onto the support column (8); A main flow channel (9) that does not pass through the tooling main board (1) is processed inward on one side of the tooling main board (1), and a plurality of branch flow channels (10) are opened on the side of the tooling main board (1) where the main flow channel (9) is processed and the side adjacent to the main flow channel (9). The center lines of the main flow channel (9) and the plurality of branch flow channels (10) are located in the same horizontal plane, and each branch flow channel (10) passes through the main flow channel (9). A plurality of water spray holes (11) are vertically opened on the surface of the tooling main board (1) at positions corresponding to the main flow channel (9) and the plurality of branch flow channels (10). Each water spray hole (11) is connected to its corresponding main flow channel (9) and branch flow channel (10), and a plug (12) is installed at each branch flow opening on the side wall of the tooling main board (1).

2. The water flushing and cooling processing tool for the electro-machined small hole of the high guide vane according to claim 1 is characterized in that: The main flow channel (9) is arranged along the length direction of the tooling main board (1), and a quick connector (13) is installed at the inlet of the main flow channel (9) on the tooling main board (1).

3. The water flushing and cooling processing tool for the electro-machined small hole of a high-inductance blade according to claim 1 or 2, characterized in that: There are five branch channels (10), and 11 water spray holes (11) are opened on the main channel (9) and the branch channel (10). The 11 water spray holes (11) respectively correspond to the small inner holes to be processed in the high guide vane.

4. A process for flushing and cooling the inner hole of a high-inductance blade electrically machined using the flushing and cooling tooling for the inner hole of a high-inductance blade electrically machined using the tooling described in claim 3, wherein cooling water is supplied to the inlet of the small hole to be machined during the machining process for cooling and lowering the temperature of the part, characterized in that: During the machining process, cooling water needs to be supplied to the outlet of the small hole to be machined on the part to reduce the temperature.

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