阅读说明：本技术 基于加工机床的整体叶盘无损检测装置和方法 (Blisk nondestructive testing device and method based on processing machine tool ) 是由 白国娟 侯乃先 王星星 于 2018-05-29 设计创作，主要内容包括：本发明提供了一种基于加工机床的整体叶盘无损检测装置和方法,所述整体叶盘无损检测装置包括整体叶盘机床加工系统、涡流检测系统和机床加工控制系统,所述涡流检测系统安装在所述整体叶盘机床加工系统中,通过机床加工控制系统的控制,自动完成所述整体叶盘机床加工系统中叶盘的无损检测。所述基于加工机床的整体叶盘无损检测方法采用如上所述的基于加工机床的整体叶盘无损检测装置。本发明实现了对整体叶盘的无损检测,所述无损检测操作简单,可探性强,易实现,利用现有机床和涡流检测系统实现无损检测,所以,检测系统研制的工作量较小,研发成本低。(The invention provides a blisk nondestructive testing device and method based on a processing machine tool, wherein the blisk nondestructive testing device comprises a blisk machine tool processing system, an eddy current testing system and a machine tool processing control system, the eddy current testing system is installed in the blisk machine tool processing system, and the blisk nondestructive testing in the blisk machine tool processing system is automatically completed through the control of the machine tool processing control system. The nondestructive testing method of the blisk based on the processing machine tool adopts the nondestructive testing device of the blisk based on the processing machine tool. The nondestructive testing of the whole leaf disc is realized, the nondestructive testing is simple to operate, strong in detectability and easy to realize, and the nondestructive testing is realized by utilizing the existing machine tool and an eddy current testing system, so that the workload of the testing system development is small, and the research and development cost is low.)

1. The utility model provides a blisk nondestructive test device based on machine tool, its characterized in that, blisk nondestructive test device includes blisk machine tool machining system, eddy current testing system and machine tool machining control system, eddy current testing system installs in blisk machine tool machining system, through machine tool machining control system's control, accomplish automatically the nondestructive test of blisk among the blisk machine tool machining system.

2. The machine-based blisk nondestructive inspection system of claim 1 wherein said blisk machine tool system includes a blisk machine tool, a blisk, and a chuck secured to an inner bottom surface of said blisk machine tool, said blisk being mounted on said chuck within said blisk machine tool.

3. The machine tool-based blisk nondestructive inspection device of claim 2, wherein the eddy current inspection system includes a tool holder chuck having one end mounted to the inner top surface of the blisk machine and an eddy current inspection probe mounted to the other end of the tool holder chuck such that the eddy current inspection probe is positioned above the blisk for inspection of the blisk.

4. The machine tool-based blisk nondestructive inspection device of claim 3, wherein the eddy current inspection probe comprises two probes, each end of the probe being spring loaded.

5. The machine tool-based blisk nondestructive inspection apparatus as set forth in claim 3, wherein said eddy current inspection system further comprises a feedback signal receiving and processing device mounted externally to said blisk machine.

6. The machine tool based blisk nondestructive inspection apparatus as set forth in claim 3 wherein said machine tool processing control system includes a machine tool control means mounted within said blisk machine for controlling said turbine inspection system.

7. A nondestructive testing method for a blisk based on a processing machine tool, which is characterized in that the nondestructive testing method for the blisk adopts the nondestructive testing device for the blisk based on the processing machine tool as claimed in any one of claims 1 to 6.

8. The machine tool-based blisk nondestructive inspection method of claim 7, wherein the blisk nondestructive inspection method comprises:

S1, after the blisk is machined, withdrawing the tool rest chuck, and opening a glass cover of the blisk machine tool;

s2, selecting the applicable eddy current detection probe according to the processing path and the feed mode during processing;

S3, replacing the knife on the tool rest chuck by the eddy current detection probe;

S4, moving the eddy current detection probe according to the final processing path of the blisk during processing to measure;

And S5, analyzing the detection result.

9. The machine tool-based blisk nondestructive inspection method of claim 8 wherein said eddy current probe is in constant contact with the machined surface in step S2.

10. The nondestructive inspection method for blisk according to claim 7, wherein the machining tool is controlled according to the feeding amount set in the machining program set in advance in step S4 so that the eddy current inspecting probe is in contact with the machined side surface with a certain pressure.

Technical Field

The invention relates to the field of nondestructive testing of blisks, in particular to a nondestructive testing device and a nondestructive testing method of blisks based on a machining machine tool, which are suitable for initial inspection of blisks for engine rotors.

Background

Currently, in the field of aeroengines, there are two types of blisks. The first type of blisk is a mechanical fastening of the detachable blades to the disk, the disk and the blades including means for fastening them together. The second type of blisk, also called blisk, is a single component without any fixing mechanism. I.e., the disk and blades are directly connected, rather than being a single component joined together by a tenon or mortise.

The blisk is a relatively new structural main part in a modern aeroengine, the dead weight of blade tenon and mortise connection and the structure for supporting the weight are not needed, and the weight of an engine fan, a gas compressor and a turbine rotor is reduced. The integral blade disc can eliminate the loss caused by the air flow escaping in the gap between the tenon root and the mortise in the conventional blade disc, so that the working efficiency of the engine is increased, and the thrust-weight ratio of the whole engine is obviously improved. The mounting edge and the connecting pieces such as the bolt, the nut, the locking plate and the like are omitted, the number of parts is greatly reduced, and accidents such as fretting wear, microcracks, locking plate damage and the like between the tenon and the mortise are avoided, so that the service life and the safety and reliability of the engine are greatly improved, and the engine is of great importance for improving the performance of an aircraft engine.

Blisks are rotating parts that are subjected to considerable centrifugal loads during operation which generate corresponding stresses that must be limited in order to increase the lifetime of the part. Various forms of superalloy materials are commonly employed in modern aircraft turbine engines to ensure the integrity of the component over its useful life. However, during the initial manufacturing of an engine component, there may be defects, cracks, or other anomalies in the component that will affect the useful life of the component, and thus the integrity of the component. Therefore, during or after manufacture, the structure is inspected to discover any anomalies present therein that may limit the useful life of the component.

Blisks have complex profiles and are typically inspected for defects using penetrant inspection. The penetration test is to coat the surface with a liquid of a visible or fluorescent substance, to wick into the discontinuity, to clean the surface, and to spray a developing solution or to irradiate ultraviolet rays to inspect the surface for open defects. The penetration detection method has the advantages of simple operation, low cost, visual defect display, high detection sensitivity, wide range of detectable materials and defects, and capability of roughly realizing comprehensive detection on parts with complex shapes by one-time operation. However, penetration detection can only detect discontinuities open to the surface, which must be relatively smooth and free of contaminants, and which can contaminate the workpiece and the environment.

The detection of internal defects in components is critical because cracks often arise from the initiation of defects within the material that affect the life of the component, but there is no nondestructive inspection device and method that is easy to operate and can detect internal defects in blisks. The nondestructive detection refers to the detection of defects, chemical and physical parameters of materials, parts and equipment on the premise of not damaging or influencing the use performance of the detected object.

Due to the complex configuration of the blisk, there is no nondestructive inspection system and method that is easy to operate and can detect the internal defects of the blisk. Therefore, the development of a novel blisk nondestructive testing device based on a processing machine tool is urgently needed by those skilled in the art.

Disclosure of Invention

The invention aims to overcome the defects that the profile of a blisk is complex, the adopted penetration detection can only detect the discontinuity from an opening to the surface, the workpiece and the environment are polluted and the like in the prior art, and provides a blisk nondestructive detection device and a blisk nondestructive detection method based on a processing machine tool.

the invention solves the technical problems through the following technical scheme:

The utility model provides a blisk nondestructive test device based on machine tool, its characterized in that, blisk nondestructive test device includes blisk machine tool machining system, eddy current testing system and machine tool machining control system, eddy current testing system installs in blisk machine tool machining system, through machine tool machining control system's control, accomplish automatically the nondestructive test of blisk among the blisk machine tool machining system.

According to one embodiment of the invention, the blisk machining system includes a blisk machine, a blisk, and a chuck secured to an inner bottom surface of the blisk machine, the blisk being mounted on the chuck within the blisk machine.

According to one embodiment of the invention, the eddy current testing system comprises a tool rest chuck and an eddy current testing probe, wherein one end of the tool rest chuck is arranged on the inner top surface of the blisk machine tool, and the eddy current testing probe is arranged at the other end of the tool rest chuck, so that the eddy current testing probe is positioned above the blisk to test the blisk.

According to one embodiment of the invention, the eddy current inspection probe comprises two probes, the ends of which are each fitted with a spring.

According to an embodiment of the invention, the eddy current inspection system further comprises a feedback signal receiving and processing device installed outside the blisk machine tool.

According to one embodiment of the invention, the machine tool machining control system comprises a machine tool control device mounted within the blisk machine for controlling the turbine detection system.

The invention also provides a blisk nondestructive testing method based on the processing machine tool, which is characterized in that the blisk nondestructive testing method adopts the blisk nondestructive testing device based on the processing machine tool.

According to one embodiment of the invention, the blisk nondestructive testing method comprises the following steps:

s1, after the blisk is machined, withdrawing the tool rest chuck, and opening a glass cover of the blisk machine tool;

S2, selecting the applicable eddy current detection probe according to the processing path and the feed mode during processing;

s3, replacing the knife on the tool rest chuck by the eddy current detection probe;

S4, moving the eddy current detection probe according to the final processing path of the blisk during processing to measure;

And S5, analyzing the detection result.

according to an embodiment of the present invention, the eddy current inspection probe is always in contact with the processing surface in step S2.

According to an embodiment of the present invention, in the step S4, the machining tool is controlled according to the feeding amount set in the machining program set previously, so that the eddy current inspection probe is in contact with the machined side surface and has a certain pressure.

The positive progress effects of the invention are as follows:

The blisk nondestructive testing device and method based on the processing machine tool utilize a method of integrating a blisk machine tool processing system and an eddy current testing system, realize nondestructive testing on the blisk, use the last step processing path of blisk machining as the motion path of a nondestructive testing eddy current probe, use a cutter chuck of the machine tool as a chuck for driving the eddy current probe to move, and use a processing operation system of the machine tool as an operation system for moving the eddy current probe, thereby realizing automatic nondestructive testing on the blisk by using the eddy current testing system. The nondestructive testing is simple to operate, strong in detectability and easy to realize, and the nondestructive testing is realized by utilizing the existing machine tool and the eddy current testing system, so that the workload of the testing system development is small, and the research and development cost is low.

drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:

FIG. 1 is a schematic structural diagram of a blisk nondestructive testing device based on a processing machine tool.

FIG. 2 is a schematic structural diagram of an eddy current inspection probe in the blisk nondestructive inspection device based on a processing machine tool.

FIG. 3 is a flow chart of the blisk nondestructive testing method based on the processing machine tool.

[ reference numerals ]

Blisk machine tool 10

blisk 20

Chuck 30

Tool holder chuck 40

Eddy current testing probe 50

probe 51

Spring 52

Feedback signal reception processing device 60

Machine tool control device 70

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.

FIG. 1 is a schematic structural diagram of a blisk nondestructive testing device based on a processing machine tool. FIG. 2 is a schematic structural diagram of an eddy current inspection probe in the blisk nondestructive inspection device based on a processing machine tool.

As shown in fig. 1 and 2, the invention discloses a blisk nondestructive testing device based on a processing machine tool, which comprises a blisk machine tool processing system, an eddy current testing system and a machine tool processing control system, wherein the eddy current testing system is installed in the blisk machine tool processing system, and the blisk nondestructive testing in the blisk machine tool processing system is automatically completed through the control of the machine tool processing control system.

Preferably, the blisk machining system includes a blisk machine tool 10, a blisk 20, and a chuck 30, the chuck 30 is fixed to an inner bottom surface of the blisk machine tool 10, and the blisk 20 is mounted on the chuck 30 and located inside the blisk machine tool 10.

the eddy current inspection system comprises a tool holder chuck 40 and an eddy current inspection probe 50, wherein one end of the tool holder chuck 40 is arranged on the inner top surface of the blisk machine tool 10, and the eddy current inspection probe 50 is arranged at the other end of the tool holder chuck 40, so that the eddy current inspection probe 50 is positioned above the blisk 20 to inspect the blisk 20.

The eddy current inspection probe 50 here preferably comprises two probes 51, each of which has a spring 52 mounted on the end of the probe 51. The eddy current inspection probe 50 comprises a small electrical coil mounted near its needle tip, through which an alternating current is generated, which in turn generates eddy currents in the component. The probe 51 moves along the surface of the blisk 20 under test and is used to measure the interaction between the electromagnetic field and the components. Defects in the blisk 20 can disturb the eddy currents, and the disturbed eddy currents can alter the excitation current in the probe coil, so that the altered current can be properly detected to indicate an anomaly. Therefore, the defects of the blisk can be accurately, quickly and conveniently detected through the combined action of the eddy current detection system and the blisk processing machine tool system, and low-cost detection of the blisk is realized.

In addition, the eddy current testing system further comprises a feedback signal receiving and processing device 60, and the feedback signal receiving and processing device 60 is installed outside the blisk machine tool 10.

Further, the machine tool machining control system includes a machine tool control device 70, and the machine tool control device 70 is installed in the blisk machine tool 10 for controlling the turbine detection system.

FIG. 3 is a flow chart of the blisk nondestructive testing method based on the processing machine tool.

as shown in fig. 3, the present invention further provides a nondestructive testing method for blisk based on processing machine tool, which is characterized by using the nondestructive testing device for blisk based on processing machine tool as described above.

More specifically, the nondestructive testing method for the blisk comprises the following steps:

Step 100, after the blisk 20 is machined, the tool holder chuck 40 is withdrawn and the glass cover of the blisk machine tool 10 is opened.

Step 110, selecting an applicable eddy current inspection probe 50 according to the machining path and the feed mode during machining. Because the probe must be kept in contact with the part or sample under test during eddy current testing without any gap between the two. Therefore, different eddy current inspection probes 50 need to be selected according to different processing paths and feeding modes to ensure that the eddy current inspection probes 50 are always in contact with the processing surface.

and step 120, replacing the knife on the knife holder chuck 40 by using the eddy current testing probe 50.

Step 130, moving the eddy current inspection probe 50 according to the final machining path of the blisk 20 during machining, and performing measurement. Because the eddy current detecting probe 50 needs to contact with the detected surface and has a certain pressure during eddy current detection, the machining tool can be controlled by the feed amount set in the original set machining program, so that the eddy current probe is ensured to contact with the surface of the sample piece and has a certain pressure.

And step 140, analyzing the detection result.

As described above, the present invention integrates the eddy current inspection technology with the blisk machine tool and uses a specially made machine tool eddy current inspection probe to perform nondestructive inspection of the blisk. The tool chuck of the machine tool is used as a chuck for driving the eddy current probe to move, the machining operation system of the machine tool is used as an operation system for moving the eddy current probe, and the machining path of the last step of machining the blisk is used as a motion path of the nondestructive testing eddy current probe. After the blisk is machined, a machining tool is replaced by an eddy current probe of an eddy current detection system on the basis of a numerical control system of a machine tool, and the eddy current probe scans a part along with a tool chuck according to a machining path of the last step of blisk machining, so that the automatic nondestructive detection of the blisk by the eddy current detection system is realized.

In summary, the blisk nondestructive testing device and method based on the processing machine tool of the invention apply the method of integrating the blisk machine tool processing system and the eddy current testing system, so as to realize nondestructive testing of the blisk, the last step processing path of blisk machining is taken as the motion path of the nondestructive testing eddy current probe, the cutter chuck of the machine tool is taken as the chuck driving the eddy current probe to move, the processing operation system of the machine tool is taken as the operation system of the eddy current probe to move, and thus, the automatic nondestructive testing of the blisk by the eddy current testing system is realized. The nondestructive testing is simple to operate, strong in detectability and easy to realize, and the nondestructive testing is realized by utilizing the existing machine tool and the eddy current testing system, so that the workload of the testing system development is small, and the research and development cost is low.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.