CN216263943U - Multi-blade air film hole machining tool - Google Patents

Abstract

The utility model relates to a multi-blade air film hole machining tool, and belongs to the technical field of aero-engines. Many blades of concatenating air film spot facing work cutter includes: the device comprises a supporting rod and a base, wherein the supporting rod is connected with a machine tool shank, the bottom end of the supporting rod is fixedly connected with the base, one end, far away from the base, of the supporting rod is provided with a plurality of V-shaped grooves used for placing electrodes, and the bottom of the base is provided with a pressing piece used for pressing the electrodes. Has the advantages that: the base of installation electrode is connected through branch, can process the too little air film hole in space between the blade body of the blade that ally oneself with more, and can once only process a plurality of air film holes, convenient operation.

Description

Multi-blade air film hole machining tool

Technical Field

The utility model belongs to the technical field of aero-engines, and particularly relates to a multi-blade air film hole machining tool.

Background

The design of the film hole of the multi-connected guide vane of the high-pressure turbine of the aircraft engine is more and more complex, the multi-connected guide vane of the high-pressure turbine consists of 2 and more than two vane bodies, the space size between the vane bodies is smaller, the basin surface and the back surface of each vane body are provided with the film hole with an angle, and the film hole on the back surface of each vane body is not easy to process usually. At present, a ZNC electric spark machine tool is adopted, a bending guider is used for guiding a red copper hollow electrode to process an air film hole on the back of each blade body of 2 blades, an operator needs to slowly insert an electrode into the bending guider before processing each time, the electrode is frequently replaced in the processing process, because the electrode rotates in the bending guider, the electrode is subjected to plastic deformation bending once when rotating for one circle, the electrode is subjected to fatigue fracture after processing a plurality of air film holes, the electrode needs to be replaced again, the air film hole processing efficiency is extremely low due to frequent replacement of the electrode, only single-hole processing can be carried out, the angle of part of the air film holes is too large, the space between the blade bodies is too small, the bending rate of the bending guider exceeds the deformation limit of the electrode, and the air film holes cannot be processed.

Therefore, the utility model provides a many blades of ally oneself with film hole machining tool in order to solve prior art's not enough.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cutter for processing air film holes of multiple blades, which aims to solve the technical problems.

The technical scheme for solving the technical problems is as follows: the blade air film hole machining cutter that ally oneself with more includes: the device comprises a supporting rod and a base, wherein the supporting rod is connected with a machine tool shank, the bottom end of the supporting rod is fixedly connected with the base, one end, far away from the base, of the supporting rod is provided with a plurality of V-shaped grooves used for placing electrodes, and the bottom of the base is provided with a pressing piece used for pressing the electrodes.

Has the advantages that: the base of installation electrode is connected through branch, can process the too little air film hole in space between the blade body of the blade that ally oneself with more, and can once only process a plurality of air film holes, convenient operation.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the compressing part comprises an L-shaped pulling block, a sliding groove is formed in the bottom of the base, the pulling block is arranged in the sliding groove in a sliding mode, and the inner wall of the pulling block is abutted to the wall surface of the V-shaped groove.

The beneficial effect of adopting the further scheme is that: the pull block which is arranged in a sliding mode can be abutted to the V-shaped groove, so that the electrode can be clamped and fixed conveniently, and punching is facilitated.

Further, still include the retaining member, the retaining member includes lock nut and dog, the dog sets up the base deviates from one side in V type groove, lock nut sets up in the spout, it is used for making to draw to be equipped with on the piece lock nut passes the through-hole, be equipped with on the dog with lock nut complex locking screw, when locking, lock nut drives draw the piece to remove, press from both sides tightly the electrode.

The beneficial effect of adopting the further scheme is that: through the locking screw cooperation lock nut that sets up on the dog, rotate when lock screw and drive lock nut linear motion to drive and draw a piece linear motion and press from both sides tightly the electrode.

Further, the electrode is made of tungsten-copper alloy.

The beneficial effect of adopting the further scheme is that: the service life is long, the electrode does not need to be replaced frequently, and the working efficiency is improved.

Further, the top of base is vertical to be equipped with the mounting panel, the mounting panel with branch fixed connection.

The beneficial effect of adopting the further scheme is that: the positioning function is realized, and the assembly and the disassembly are convenient.

Furthermore, the mounting plate is provided with a positioning pin and is fixed on the supporting rod through a fixing screw.

The beneficial effect of adopting the further scheme is that: the fixing effect is good, and the assembly and the disassembly are convenient.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a bottom view of the present invention;

FIG. 5 is a schematic view of the gas film hole machining;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a strut; 2. a base; 3. pulling the block; 4. locking the nut; 5. a stopper; 6. positioning pins; 7. a set screw; 8. a V-shaped groove; 9. and an electrode.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Examples

As shown in fig. 1 to 4, the present embodiment provides a multiple blade film hole machining tool, including: a branch 1 for being connected with CNC spark machine tool handle of a knife transmission, the bottom fixed connection of branch 1 base 2, it is concrete the vertical mounting panel that is equipped with in top of base 2, the mounting panel with 1 fixed connection of branch, be equipped with locating pin 6 on the mounting panel, and fix through set screw 7 on branch 1. One end of the base 2, which is far away from the supporting rod 1, is provided with a plurality of V-shaped grooves 8 for holding electrodes 9, the bottom of the base 2 is provided with a pressing piece for pressing the electrodes 9, and the electrodes 9 are made of tungsten-copper alloy 70% and copper 30%.

It should be noted that the compressing member includes an L-shaped pulling block 3, a dovetail-shaped sliding groove is formed in the bottom of the base 2, the pulling block 3 is slidably disposed in the sliding groove, and the inner wall of the pulling block 3 abuts against the wall surface of the V-shaped groove 8; still include the retaining member, the retaining member includes lock nut 4 and dog 5, dog 5 sets up base 2 deviates from one side of V type groove 8, lock nut 4 sets up in the spout, it is used for making to be equipped with on the piece 3 to draw the through-hole that lock nut 4 passed, be equipped with on the dog 5 with lock nut 4 complex locking screw, when locking, lock nut 4 drives draw piece 3 rectilinear movement in the spout, because lock nut 4 is restricted and can not rotate to can only slide, thereby drive and draw 3 rectilinear movement of piece, when removing the wall butt with V type groove 8, press from both sides tightly electrode 9 is convenient for punch the operation.

When the machining tool is used, as shown in fig. 5, the direction of the air film hole on the back of the blade body of the blade is adjusted to be vertical during machining, a special tool is called, the electrode 9 and the axis of the air film hole are collinear, machining is carried out in the Z-axis forward direction, and a workpiece needs to be placed in special oil for electric spark machining during machining.

Has the advantages that: the processing of the air film holes of partial blades which cannot be finished by using a processing mode of a bent guider due to large angle of the air film holes on the back of the blades and small space between blade bodies can be finished; the machining efficiency is high, an exhaust film hole can be machined at one time, and the electrode does not need to be replaced in the machining process; in the machining process, the electrode and the blade only move relatively in the Z-axis direction, and the shape and angle accuracy of the air film hole is higher.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (6)

1. The utility model provides a many blades air film spot facing work cutter which characterized in that includes:

a branch (1) and base (2) for being connected with the lathe handle of a knife, the bottom fixed connection of branch (1) base (2), keep away from base (2) the one end of branch (1) is equipped with V type groove (8) that a plurality of is used for placing electrode (9), the bottom of base (2) is equipped with and is used for compressing tightly of electrode (9).

2. The multi-connected blade air film hole machining tool as claimed in claim 1, wherein the pressing piece comprises an L-shaped pulling block (3), a sliding groove is formed in the bottom of the base (2), the pulling block (3) is arranged in the sliding groove in a sliding mode, and the inner wall of the pulling block (3) is abutted to the wall surface of the V-shaped groove (8).

3. The multi-connected blade air film hole machining tool as claimed in claim 2, further comprising a locking member, wherein the locking member comprises a locking nut (4) and a stop block (5), the stop block (5) is arranged on one side, away from the V-shaped groove (8), of the base (2), the locking nut (4) is arranged in the sliding groove, a through hole for enabling the locking nut (4) to penetrate through is formed in the pull block (3), a locking screw matched with the locking nut (4) is arranged on the stop block (5), and when the multi-connected blade air film hole machining tool is locked, the locking nut (4) drives the pull block (3) to move so as to clamp the electrode (9).

4. The multi-blade air film hole machining tool as claimed in any one of claims 1 to 3, wherein the material of the electrode (9) is tungsten-copper alloy.

5. The multi-blade air film hole machining tool as claimed in any one of claims 1 to 3, wherein a mounting plate is vertically arranged on the top of the base (2), and the mounting plate is fixedly connected with the support rod (1).

6. The multi-connected blade air film hole machining tool as claimed in claim 5, wherein the mounting plate is provided with a positioning pin (6) and fixed on the support rod (1) through a fixing screw (7).

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