WO2024007647A1 - 叶盘叶片水射流强化与抛光一体化系统与方法 - Google Patents

叶盘叶片水射流强化与抛光一体化系统与方法 Download PDF

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Publication number
WO2024007647A1
WO2024007647A1 PCT/CN2023/087192 CN2023087192W WO2024007647A1 WO 2024007647 A1 WO2024007647 A1 WO 2024007647A1 CN 2023087192 W CN2023087192 W CN 2023087192W WO 2024007647 A1 WO2024007647 A1 WO 2024007647A1
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WO
WIPO (PCT)
Prior art keywords
water jet
strengthening
polishing
blisk
vibration
Prior art date
Application number
PCT/CN2023/087192
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English (en)
French (fr)
Inventor
张显程
姚树磊
涂善东
迟雨欣
陈亚龙
张立章
曾飞
龚从扬
王宁
石俊秒
贾云飞
刘爽
Original Assignee
华东理工大学
中国航发商用航空发动机有限责任公司
中国航发湖南动力机械研究所
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Application filed by 华东理工大学, 中国航发商用航空发动机有限责任公司, 中国航发湖南动力机械研究所 filed Critical 华东理工大学
Publication of WO2024007647A1 publication Critical patent/WO2024007647A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/06—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving oscillating or vibrating containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention relates to the technical field of surface strengthening treatment, and in particular to an integrated system and method for water jet strengthening and polishing of blisk blades.
  • the blisk is an integral part composed of a main disk feature and several blade features evenly distributed around the circumference. As a key component in advanced aeroengines, it plays a vital role in improving the aerodynamic efficiency, thrust-to-weight ratio and reliability of aeroengines. role.
  • the blades of the blisk have complex curved thin-walled features, and the space between each blade is limited.
  • blisks have been serving in extreme working environments of high temperature, high pressure, high speed and corrosive media for a long time. Fatigue damage can easily occur on the blades of the blisk, especially the weak intake and exhaust edges of the blade surfaces.
  • Surface mechanical strengthening is an effective anti-fatigue surface modification technology. Its basic principle is to cause certain plastic deformation on the surface of the material by squeezing or impacting it, forming a plastic layer and introducing beneficial residual compressive stress. Processing densifies the material and increases the hardness of the surface layer of the material. Treating the workpiece surface through effective surface strengthening technology has been proven to reduce local stress concentration on the surface and improve the surface integrity of the workpiece, thereby significantly improving the fatigue resistance, wear resistance and corrosion resistance of the workpiece.
  • Strengthening technologies commonly used on blade surfaces include shot peening, laser shock strengthening and ultrasonic rolling strengthening. Shot peening and laser shock strengthening technologies have developed relatively maturely, and there are reports that they are applied to the surface strengthening of blisks.
  • the ultrasonic rolling head structure due to the limitations of the ultrasonic rolling head structure, it is difficult to achieve ultrasonic rolling strengthening of blisks; on the other hand, the surface roughness of the workpiece after shot peening and laser shock strengthening is relatively high, which will significantly affects the aerodynamic performance of the blade, so the workpiece after shot peening and laser shock strengthening needs to be polished again to reduce the surface roughness.
  • the invention patent with application number CN202011087257.7 proposes "rough and fine milling in one step ⁇ vibrating light
  • the processing technology is "decoration ⁇ blade laser strengthening ⁇ blade shot peening ⁇ vibration light decoration", but this undoubtedly reduces the processing efficiency and increases the processing cost.
  • Water jet surface strengthening technology has attracted much attention at home and abroad due to its advantages such as high accessibility in confined spaces, easy operation, low cost, and green environmental protection.
  • Existing water jet surface strengthening technologies include pure water jet strengthening, cavitation jet strengthening, pulse water jet strengthening and abrasive water jet strengthening.
  • Water Jet surface strengthening technology has been proven to produce significant plastic deformation and grain refinement on the surface of the workpiece being processed, introduce beneficial residual compressive stress, and increase surface hardness. Under optimized jet process parameters, it can achieve better results than shot peening. and laser shock strengthening for lower surface roughness.
  • the surface roughness treated by the existing water jet strengthening technology does not meet the needs of the surface of the blisk blades; secondly, due to the small spacing between the blisk blades, the jet medium (such as water) in the traditional water jet strengthening process of the blades The splash of abrasive particles or abrasive particles will cause adverse effects on other blade surfaces.
  • the purpose of the present invention is to provide an integrated system and method for water jet strengthening and polishing of blisk blades to solve the problems existing in the above-mentioned existing technologies and improve the surface strengthening quality and efficiency of blisk blades.
  • the present invention provides the following solutions:
  • the invention provides an integrated system for water jet strengthening and polishing of blisk blades, which includes a vibration polishing unit and a water jet strengthening unit;
  • the vibration polishing unit includes a vibration polishing tank, a clamp for holding the blisk is provided in the vibration polishing tank, and a vibration motor for driving the vibration of the vibration polishing tank is installed on the vibration polishing tank; it also includes at least three A support spring, the top end of the support spring is fixedly connected to the vibration polishing tank, and the bottom end is fixedly connected to the workbench;
  • the water jet strengthening unit includes a water jet strengthening device for water jet strengthening the blades of the blisk and a driving mechanism for clamping and driving the water jet strengthening device to move in any direction in space.
  • the water jet strengthening equipment includes a high-pressure water inlet pipe, a diverter valve and an abrasive mixing connection valve.
  • the abrasive mixing connection valve is provided with two mutually isolated abrasive mixing chambers.
  • the high-pressure water inlet pipe One end of each abrasive mixing chamber is connected to the diverter valve, and each abrasive mixing chamber is connected to an abrasive inlet, and the abrasive inlet is away from one end of the corresponding abrasive mixing chamber.
  • each abrasive grain mixing chamber is fixedly connected with a jet pipe, and the end of the jet pipe away from the abrasive grain mixing cavity is provided with a jet nozzle, and one of the jet
  • the jet nozzle on the tube corresponds one-to-one with the jet nozzle on the other jet tube, and the two corresponding jet nozzles are arranged facing each other.
  • two abrasive mixing chambers are provided in the abrasive mixing connection valve, and the separation valve
  • the flow valve is a three-way diverter valve; the abrasive particle mixing chamber is connected to the diverter valve through a high-pressure diverter pipe.
  • it also includes a water tank, the vibrating polishing tank and the workbench are both arranged in the water tank, and the workbench is fixedly connected to the water tank.
  • the blisk rotation unit includes a vertical turntable fixed on the workbench and located below the vibration polishing tank.
  • the clamp is coaxial with the blisk, so The clamp is fixedly connected to the rotating disk of the vertical turntable, and the vertical turntable is provided with a turntable servo motor for driving the rotating disk to rotate.
  • the rotating disc is rotationally and sealingly connected to the bottom plate of the vibrating polishing tank through a sealing transition ring.
  • the driving mechanism adopts a six-degree-of-freedom mechanical arm; there are four vibration motors.
  • the vibration motor, the turntable servo motor and the driving mechanism are electrically connected to a controller respectively, and the controller is arranged in an electric control cabinet.
  • the invention also provides an integrated method of water jet strengthening and polishing of blisk blades. Based on the above integrated water jet strengthening and polishing system of blisk blades: the blisk to be processed is clamped with a clamp, and the blisk is filled with water in a vibration polishing tank. Grinding fluid is put in, and the vibration motor drives the vibrating polishing tank to vibrate. At the same time, the driving mechanism drives the water jet strengthening equipment to move to perform water jet strengthening on all the blades of the blisk in sequence.
  • the water jet strengthening equipment when driven by the driving mechanism to perform water jet strengthening on a single blade: one of the jet nozzles is facing the front of the blade, and the other jet nozzle is facing the front of the blade.
  • the back side of the blade is positioned so that the distance between the two jet nozzles and the blade is equal.
  • the integrated system and method for water jet strengthening and polishing of blisk blades of the present invention effectively improves the surface strengthening quality and efficiency of blisk blades.
  • the integrated system and method for water jet strengthening and polishing of blisk blades of the present invention processes blisk blades through bilaterally symmetrical water jet surface strengthening, which can avoid deformation of thin-walled blades due to uneven stress; vibration polishing and bilateral
  • the water jet surface strengthening is carried out simultaneously, achieving the integrated effect of water jet strengthening and polishing; vibration polishing and bilateral water jet surface strengthening complement each other on the blade surface.
  • the abrasive in the vibration polishing module can effectively hinder the water jet.
  • the proposed integrated control method of water jet strengthening and polishing on both sides of the blisk blades can make the bilateral nozzles act on the surfaces of both sides of the blades as uniformly as possible, and achieve the blisk through calibration and trajectory planning of individual blades. Surface strengthening and polishing effectively avoid minor deformation of the blades due to uneven stress, greatly improving the efficiency of blisk surface treatment.
  • Figure 1 is a schematic structural diagram of the integrated water jet strengthening and polishing system for blisk blades of the present invention
  • Figure 2 is a partial cross-sectional view of the integrated water jet strengthening and polishing system for blisk blades according to the present invention
  • Figure 3 is a bottom view of Figure 2;
  • Figure 4 is a schematic diagram of the rotation of the blisk in the integrated method of water jet strengthening and polishing of blisk blades according to the present invention
  • Figure 5 is a schematic diagram of the water jet strengthening equipment moving along the air inlet edge of the blade in the integrated method of water jet strengthening and polishing of blisk blades according to the present invention
  • Figure 6 is a schematic diagram of the water jet strengthening equipment moving along the blade thickness curve in the integrated method of water jet strengthening and polishing of blisk blades according to the present invention
  • the purpose of the present invention is to provide an integrated system and method for water jet strengthening and polishing of blisk blades to solve the problems existing in the above-mentioned existing technologies and improve the surface strengthening quality and efficiency of blisk blades.
  • This embodiment provides an integrated water jet strengthening and polishing system for blisk blades, including a vibration polishing unit, a blisk rotation unit and a water jet strengthening unit.
  • the vibration polishing unit includes a vibration polishing tank 3.
  • a clamp 6 for clamping the blisk 7 is provided in the vibration polishing tank 3.
  • Four vibration motors 32 for driving the vibration of the vibration polishing tank 3 are installed on the vibration polishing tank 3.
  • Four vibration motors 32 are installed on the vibration polishing tank 3.
  • the vibration motors 32 are evenly distributed under the vibration polishing tank 3; the bottom ends of the four corners of the vibration polishing tank 3 are respectively provided with a support spring 31, the top of the support spring 31 is firmly connected to the vibration polishing tank 3, and the bottom end passes through the spring seat 33 is fixedly connected to the workbench 21; the vibration polishing tank 3 and the workbench 21 are both arranged in the water tank 2, and the workbench 21 is fixedly connected to the water tank 2.
  • the blisk rotation unit includes a vertical turntable 4 fixed on the workbench 21 and located below the vibration polishing tank 3.
  • the clamp 6 is coaxial with the blisk 7.
  • the clamp 6 is fixedly connected to the rotating disk 42 of the vertical turntable 4.
  • the vertical The turntable 4 is provided with a turntable servo motor 41 for driving the rotating disk 42 to rotate.
  • the rotating disk 42 is connected to the bottom plate of the vibrating polishing tank 3 in a rotational seal through a sealing transition ring 34 .
  • the water jet strengthening unit includes a water jet strengthening device 5 for water jet strengthening the blades of the blisk 7 and a driving mechanism for clamping and driving the water jet strengthening device 5 to move in any direction in space.
  • the driving mechanism adopts a six-freedom Mechanical arm 1.
  • the water jet strengthening equipment 5 includes a high-pressure water inlet pipe 53, a diverter valve and an abrasive mixing connection valve.
  • the abrasive mixing connection valve is provided with two mutually isolated abrasive mixing chambers.
  • the high-pressure water inlet pipe 53 One end of each abrasive mixing chamber is connected to the diverter valve, and each abrasive mixing chamber has There is an abrasive grain inlet, and the end of the abrasive grain inlet away from the corresponding abrasive grain mixing chamber is connected to an abrasive grain feeding pipe 52; the other end of each abrasive grain mixing cavity is fixedly connected to a jet tube 51, and the jet tube 51 is far away from A jet nozzle is provided at one end of the abrasive particle mixing chamber, and the jet nozzle on one jet tube 51 corresponds to the jet nozzle on the other jet tube 51 one by one, and the two corresponding jet nozzles are arranged opposite to each other.
  • abrasive grain mixing chambers there are two abrasive grain mixing chambers in the abrasive grain mixing connection valve, and the diverter valve is a three-way diverter valve; the abrasive grain mixing chamber is connected to the diverter valve through a high-pressure diverter pipe.
  • the vibration motor 32, the turntable servo motor 41 and the driving mechanism are electrically connected to the controller respectively.
  • the controller is arranged in the electric control cabinet 8 and coordinately controls the vibration motor 32, the turntable servo motor 41 and the driving mechanism through the controller.
  • the invention also provides an integrated method for water jet strengthening and polishing of blisk blades. Based on the above integrated water jet strengthening and polishing system of blisk blades: the blisk 7 to be processed is clamped with a clamp 6 and placed in a vibrating polishing tank. 3 is filled with grinding fluid, and the vibrating polishing tank 3 is driven by the vibration motor 32 to vibrate. At the same time, the water jet strengthening equipment 5 is driven by the driving mechanism to move to perform water jet strengthening on all the blades of the blisk 7 in sequence.
  • two jet nozzles are located on both sides of the single blade, one jet nozzle is facing the front of the blade, and the other jet nozzle is facing the back of the blade. , and make the distance between the two jet nozzles and the blades equal.
  • the enhanced air inlet edge of the blade as an example: first, slice the blade layer by layer along the vertical direction of the blade air inlet edge line 71 to obtain the blade cross-sectional profile (as shown in Figure 6), and obtain the blade thickness curve 74 through the blade cross-sectional profile.
  • the jet outlet axis 54 of the two jet nozzles is always perpendicular to the blade air inlet edge 71, on the other hand, the center point of the jet outlet axis 54 of the two jet nozzles is always located on the blade thickness curve 74.
  • the jet outlet axes 54 of the two jet nozzles are perpendicular to the blade thickness curve 74.
  • the water jet intensification device 5 continuously adjusts its posture while moving up and down along the blade width direction to ensure that it is perpendicular to the blade thickness curve 74, and continuously adjusts its posture while moving from the blade root to the blade tip or from the blade tip to the blade root to ensure that the two jets
  • the jet outlet axis 54 of the nozzle is perpendicular to the blade air inlet edge 71 .
  • the exhaust edge of the strengthened blade as an example: first, slice the blade layer by layer along the vertical direction of the blade exhaust edge line 72 to obtain the blade cross-sectional profile, and obtain the blade thickness curve 74 through the blade cross-sectional profile.
  • the jet outlet axes 54 of the two jet nozzles are always perpendicular to the blade exhaust edge 72; on the other hand, the center points of the jet outlet axes 54 of the two jet nozzles are always located on the blade thickness curve 74, and both The jet outlet axis 54 of each jet nozzle is perpendicular to the blade thickness curve 74.
  • the water jet intensification device 5 continuously adjusts its posture while moving up and down along the blade width direction to ensure that the jet outlet axis 54 is perpendicular to the blade thickness curve 74, and continuously adjusts its posture while moving from the blade root to the blade tip or from the blade tip to the blade root. Ensure that the jet outlet axes 54 of the two jet nozzles are perpendicular to the blade exhaust edge 72 .
  • the strengthening effect is the best when the jet nozzle is perpendicular to the surface to be processed.
  • the front and back surfaces of the blades are both curved surfaces, the two nozzles of the water jet strengthening device 5 in this embodiment are opposite to each other.
  • one constraint is that the water jet intensification equipment 5 is at The posture is continuously adjusted during the up and down movement along the width direction of the blade to ensure that the jet outlet axis 54 is perpendicular to the blade thickness curve 74; another constraint is that the water jet intensification device 5 is continuously adjusted while moving from the blade root to the blade tip or from the blade tip to the blade root.
  • the attitude is to ensure that the jet outlet axis 54 of the two jet nozzles is perpendicular to the blade inlet edge 71 or the blade exhaust edge 72.
  • the purpose is to make the two jet nozzles approximately perpendicular to the surface of the corresponding blade as much as possible to ensure that the blade is Surface strengthening effect.
  • the blades on the blisk 7 are evenly distributed circumferentially, after cleaning a single blade, it is necessary to turn on the turntable servo motor 41 and drive the fixture 6 and the blisk 7 through the turntable's rotating disk 42 to rotate at an angle ⁇ , and the angle ⁇ is adjacent to The angle between the blade growth direction lines 73 of the two blades is then driven by the driving mechanism to drive the water jet strengthening device 5 to perform water jet strengthening on the next blade until the strengthening of all the blades on the leaf disk 7 is completed.

Abstract

一种叶盘叶片水射流强化与抛光一体化系统，包括振动抛光单元和水射流强化单元；振动抛光单元包括振动抛光槽（3），振动抛光槽（3）内设置有用于夹持叶盘的夹具（6），振动抛光槽（3）上安装有用于驱动振动抛光槽（3）振动的振动电机（32）；支撑弹簧（31）的顶端与振动抛光槽（3）固连、底端与工作台（21）固连；水射流强化单元包括用于对叶盘（7）的叶片进行水射流强化的水射流强化设备（5）和用于夹持并能够驱动水射流强化设备（5）在空间任意方向移动的驱动机构。还包括方法：在振动抛光槽（3）内充入研磨液，通过振动电机（32）驱动振动抛光槽（3）振动对叶片进行抛光，同时通过驱动机构驱动水射流强化设备（5）移动以对叶盘（7）的所有叶片依次进行水射流强化。本发明有效提高了叶盘（7）叶片的表面强化质量和效率。

Description

叶盘叶片水射流强化与抛光一体化系统与方法 技术领域
本发明涉及表面强化处理技术领域，特别是涉及一种叶盘叶片水射流强化与抛光一体化系统与方法。
背景技术
叶盘是一个以主体盘特征和圆周均布的数个叶片特征组成的整体零件，其作为先进航空发动机中的关键零件，在提高航空发动机气动效率、推重比和可靠性方面起着至关重要的作用。叶盘的叶片具有复杂曲面薄壁特征，且各个叶片之间的空间受限。然而，叶盘长期服役于高温、高压、高速以及腐蚀介质的极端工作环境下，疲劳破坏极易发生于叶盘的叶片上，尤其是薄弱的叶片表面进排气边部位。
表面机械强化是一种有效的抗疲劳表面改性技术，其基本原理是通过对材料表面进行挤压或冲击，使材料表层产生一定的塑性变形，形成塑性层并引入有益的残余压应力，同时加工使材料致密进而提高了材料表层的硬度。通过有效的表面强化技术处理工件表面已被证实可以降低表面局部应力集中、提高工件表面完整性，进而显著提高工件的抗疲劳、耐磨损和抗腐蚀性能。常用于叶片表面的强化技术有喷丸强化、激光冲击强化和超声滚压强化。喷丸强化和激光冲击强化技术已发展相对比较成熟，也有报道指出其应用于叶盘的表面强化。然而，一方面，受超声滚压头结构的限制，对于叶盘叶盘进行超声滚压强化难以实现；另一方面，喷丸强化和激光冲击强化后的工件表面粗糙度都比较高，这将严重影响叶片的气动性能，因此喷丸强化和激光冲击强化后的工件还需要再次进行抛光以降低表面的粗糙度，如申请号为CN202011087257.7的发明专利提出“粗精一次铣削成型→振动光饰→叶片激光强化→叶片喷丸→补振动光饰”的加工工艺，但是这无疑降低了加工效率并增加了加工成本。
水射流表面强化技术以其在受限空间的可达性高、操作简便、成本低以及绿色环保等优点而备受国内外关注。现有的水射流表面强化技术包括纯水射流强化、空化射流强化、脉冲水射流强化以及磨粒水射流强化。水 射流表面强化技术已被证明可以使被处理工件表面产生明显的塑性变形和晶粒细化，引入有益的残余压应力，并提高表层硬度，并且在优化的射流工艺参数下可以获得比喷丸强化和激光冲击强化更低的表面粗糙度。首先，现有的水射流强化技术处理后的表面粗糙度还不满足叶盘叶片表面的需求；其次，由于叶盘叶片之间的间距较小，传统的水射流强化叶片过程中射流介质(如水或者磨粒)的飞溅会对其他叶片表面造成不良影响。
发明内容
本发明的目的是提供一种叶盘叶片水射流强化与抛光一体化系统与方法，以解决上述现有技术存在的问题，提高叶盘叶片的表面强化质量和效率。
为实现上述目的，本发明提供了如下方案：
本发明提供了一种叶盘叶片水射流强化与抛光一体化系统，包括振动抛光单元和水射流强化单元；
所述振动抛光单元包括振动抛光槽，所述振动抛光槽内设置有用于夹持叶盘的夹具，所述振动抛光槽上安装有用于驱动所述振动抛光槽振动的振动电机；还包括至少三个支撑弹簧，所述支撑弹簧的顶端与所述振动抛光槽固连、底端与工作台固连；
所述水射流强化单元包括用于对所述叶盘的叶片进行水射流强化的水射流强化设备和用于夹持并能够驱动所述水射流强化设备在空间任意方向移动的驱动机构。
优选的，所述水射流强化设备包括高压水入口管、分流阀和磨粒混合连接阀，所述磨粒混合连接阀内设置有两个相互隔绝的磨粒混合腔，所述高压水入口管和每个所述磨粒混合腔都一端与所述分流阀连通，每个所述磨粒混合腔都连通有一个磨粒入口，所述磨粒入口远离对应的所述磨粒混合腔的一端都连接有磨粒进料管；每个所述磨粒混合腔的另一端均固连有射流管，所述射流管远离所述磨粒混合腔的一端设置有射流喷头，且一个所述射流管上的所述射流喷头与另一个所述射流管上的所述射流喷头一一对应，相对应的两个所述射流喷头相向设置。
优选的，所述磨粒混合连接阀内设置有两个所述磨粒混合腔，所述分 流阀为三通分流阀；所述磨粒混合腔通过高压分流管与所述分流阀连通。
优选的，还包括水箱，所述振动抛光槽和所述工作台均设置在所述水箱内，且所述工作台与所述水箱固连。
优选的，还包括叶盘回转单元，所述叶盘回转单元包括固设在所述工作台上且位于所述振动抛光槽下方的立式转台，所述夹具与所述叶盘同轴，所述夹具与所述立式转台的转动盘固连，所述立式转台上设置有用于驱动所述转动盘转动的转台伺服电机。
优选的，所述转动盘通过密封过渡环与所述振动抛光槽的底板转动密封连接。
优选的，所述驱动机构采用六自由度机械臂；所述振动电机为四个。
优选的，所述振动电机、所述转台伺服电机和所述驱动机构分别与控制器电连接，所述控制器设置在电控柜中。
本发明还提供一种叶盘叶片水射流强化与抛光一体化方法，基于上述的叶盘叶片水射流强化与抛光一体化系统：将待处理的叶盘用夹具夹持，在振动抛光槽内充入研磨液，通过振动电机驱动所述振动抛光槽振动，同时通过驱动机构驱动水射流强化设备移动以对所述叶盘的所有叶片依次进行水射流强化。
优选的，在通过所述驱动机构驱动所述水射流强化设备对单个所述叶片进行水射流强化时：使得一个所述射流喷头正对所述叶片的正面，另一个所述射流喷头正对所述叶片的背面，且使两个所述射流喷头与所述叶片的距离相等。
本发明相对于现有技术取得了以下技术效果：
本发明的叶盘叶片水射流强化与抛光一体化系统与方法有效提高了叶盘叶片的表面强化质量和效率。本发明的叶盘叶片水射流强化与抛光一体化系统与方法通过双侧对称的水射流表面强化方式加工叶盘叶片，可以避免薄壁叶片因受力不均而发生变形；振动抛光与双侧水射流表面强化同时进行，实现了水射流强化与抛光一体化的效果；振动抛光与双侧水射流表面强化相辅作用于叶片表面，一方面，振动抛光模块中的研磨剂可以有效阻碍水射流强化叶片过程中射流介质的飞溅，从而避免飞溅的射流介质撞 击其他部位造成表面损伤；另一方面，在研磨剂中进行高速双侧水射流强化叶片表面加速了研磨剂的运动，使得达到更好的振动抛光效果。此外，所提出的叶盘叶片双侧水射流强化与抛光一体化控制方法，可以使双侧喷头尽可能均匀地作用于双侧叶片表面，并且通过标定和对单个叶片的轨迹规划实现叶盘的表面强化与抛光，有效避免了叶片因受力不均而发生的微小变形，大大提高了叶盘表面处理的效率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明叶盘叶片水射流强化与抛光一体化系统的结构示意图；
图2为本发明叶盘叶片水射流强化与抛光一体化系统的局部剖视图；
图3为图2的仰视图；
图4为本发明叶盘叶片水射流强化与抛光一体化方法中叶盘旋转的示意图；
图5为本发明叶盘叶片水射流强化与抛光一体化方法中水射流强化设备沿叶片进气边边线移动的示意图；
图6为本发明叶盘叶片水射流强化与抛光一体化方法中水射流强化设备沿叶片厚度曲线移动的示意图；
其中：1、六自由度机械臂；2、水箱；21、工作台；3、振动抛光槽；31、支撑弹簧；32、振动电机；33、弹簧座；34、密封过渡环；4、立式转台；41、转台伺服电机；42、转动盘；5、水射流强化设备；51、射流管；52、磨粒进料管；53、高压水入口管；54、射流出口轴线；6、夹具；7、叶盘；71、叶片进气边边线；72、叶片排气边边线；73、叶片生长方向线；74、叶片厚度曲线；8、电控柜。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有付出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的目的是提供一种叶盘叶片水射流强化与抛光一体化系统与方法，以解决上述现有技术存在的问题，提高叶盘叶片的表面强化质量和效率。
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明作进一步详细的说明。
如图1至图6所示：本实施例提供了一种叶盘叶片水射流强化与抛光一体化系统，包括振动抛光单元、叶盘回转单元和水射流强化单元。
振动抛光单元包括振动抛光槽3，振动抛光槽3内设置有用于夹持叶盘7的夹具6，振动抛光槽3上安装有四个用于驱动振动抛光槽3振动的振动电机32，四个振动电机32均布在振动抛光槽3的下方；振动抛光槽3的四个角的底端分别设置有一个支撑弹簧31，支撑弹簧31的顶端与振动抛光槽3固连、底端通过弹簧座33与工作台21固连；振动抛光槽3和工作台21均设置在水箱2内，且工作台21与水箱2固连。
在振动抛光槽3内需要加入水和研磨剂，以形成研磨液，通过开启振动电机32能够使得振动抛光槽3振动，在振动抛光槽3带动夹具6和叶盘7相对研磨液进行振动，从而完成对叶盘叶片的抛光处理。
叶盘回转单元包括固设在工作台21上且位于振动抛光槽3下方的立式转台4，夹具6与叶盘7同轴，夹具6与立式转台4的转动盘42固连，立式转台4上设置有用于驱动转动盘42转动的转台伺服电机41。
转动盘42通过密封过渡环34与振动抛光槽3的底板转动密封连接。
水射流强化单元包括用于对叶盘7的叶片进行水射流强化的水射流强化设备5和用于夹持并能够驱动水射流强化设备5在空间任意方向移动的驱动机构，驱动机构采用六自由度机械臂1。
在本实施例中，水射流强化设备5包括高压水入口管53、分流阀和磨粒混合连接阀，磨粒混合连接阀内设置有两个相互隔绝的磨粒混合腔，高压水入口管53和每个磨粒混合腔都一端与分流阀连通，每个磨粒混合腔都 连通有一个磨粒入口，磨粒入口远离对应的磨粒混合腔的一端都连接有磨粒进料管52；每个磨粒混合腔的另一端均固连有射流管51，射流管51远离磨粒混合腔的一端设置有射流喷头，且一个射流管51上的射流喷头与另一个射流管51上的射流喷头一一对应，相对应的两个射流喷头相向设置。磨粒混合连接阀内设置有两个磨粒混合腔，分流阀为三通分流阀；磨粒混合腔通过高压分流管与分流阀连通。
振动电机32、转台伺服电机41和驱动机构分别与控制器电连接，控制器设置在电控柜8中，通过控制器协调控制振动电机32、转台伺服电机41和驱动机构。
本发明还提供一种叶盘叶片水射流强化与抛光一体化方法，基于上述的叶盘叶片水射流强化与抛光一体化系统：将待处理的叶盘7用夹具6夹持，在振动抛光槽3内充入研磨液，通过振动电机32驱动振动抛光槽3振动，同时通过驱动机构驱动水射流强化设备5移动以对叶盘7的所有叶片依次进行水射流强化。
在通过驱动机构驱动水射流强化设备5对单个叶片进行水射流强化时：使得两个射流喷头分别位于单个叶片的两侧，一个射流喷头正对叶片的正面，另一个射流喷头正对叶片的背面，且使两个所述射流喷头与所述叶片的距离相等。
具体的，以强化叶片的进气边为例：首先沿叶片进气边边线71垂线方向逐层切片得到叶片截面轮廓(如图6所示)，通过叶片截面轮廓获得叶片厚度曲线74。加工过程中，一方面，两个射流喷头的射流出口轴线54始终与叶片进气边边线71垂直，另一方面，两个射流喷头的射流出口轴线54的中心点始终位于叶片厚度曲线74上，并且两个射流喷头的射流出口轴线54与叶片厚度曲线74垂直。水射流强化设备5在沿叶片宽度方向上下运动过程中不断调整姿态以保证与叶片厚度曲线74垂直，并且自叶根向叶尖或自叶尖向叶根移动中不断调整姿态以保证两个射流喷头的射流出口轴线54与叶片进气边边线71垂直。
以强化叶片的排气边为例：首先沿叶片排气边边线72垂线方向逐层切片得到叶片截面轮廓，通过叶片截面轮廓获得叶片厚度曲线74。加工过程 中，一方面，两个射流喷头的射流出口轴线54始终与叶片排气边边线72垂直，另一方面，两个射流喷头的射流出口轴线54的中心点始终位于叶片厚度曲线74上，并且两个射流喷头的射流出口轴线54与叶片厚度曲线74垂直。水射流强化设备5在沿叶片宽度方向上下运动过程中不断调整姿态以保证射流出口轴线54与叶片厚度曲线74垂直，并且自叶根向叶尖或自叶尖向叶根移动中不断调整姿态以保证两个射流喷头的射流出口轴线54与叶片排气边边线72垂直。
需要说明的是，当射流喷头垂直于被加工表面时的强化效果是最好的，但由于叶片的正面和反面均为曲面，而本实施例中水射流强化设备5的两个喷头是相对且同轴的，所以无法保证的位于叶片两侧的两个射流喷嘴同时垂直于所正对的叶片的表面，所以于本实施例中给出了两个约束：一个约束为水射流强化设备5在沿叶片宽度方向上下运动过程中不断调整姿态以保证射流出口轴线54与叶片厚度曲线74垂直；另一约束为水射流强化设备5自叶根向叶尖或自叶尖向叶根移动中不断调整姿态以保证两个射流喷头的射流出口轴线54与叶片进气边边线71或叶片排气边边线72垂直，目的是尽可能使两个射流喷头近似垂直于对应的叶片的表面，以保证对叶片表面的强化效果。
由于叶盘7上的叶片是均匀周向分布的，在清理好单个叶片后，需要通过开启转台伺服电机41通过转台的转动盘42带动夹具6和叶盘7转动角度α，角度α为相邻的两个叶片的叶片生长方向线73之间的夹角，然后再通过驱动机构驱动水射流强化设备5对下一个叶片进行水射流强化，直至完成叶盘7上所有叶片的强化。
在本发明的描述中，需要说明的是，术语“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
本说明书中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用 范围上均会有改变之处。综上所述，本说明书内容不应理解为对本发明的限制。

Claims (10)

  1. 叶盘叶片水射流强化与抛光一体化系统，其特征在于：包括振动抛光单元和水射流强化单元；
    所述振动抛光单元包括振动抛光槽，所述振动抛光槽内设置有用于夹持叶盘的夹具，所述振动抛光槽上安装有用于驱动所述振动抛光槽振动的振动电机；还包括至少三个支撑弹簧，所述支撑弹簧的顶端与所述振动抛光槽固连、底端与工作台固连；
    所述水射流强化单元包括用于对所述叶盘的叶片进行水射流强化的水射流强化设备和用于夹持并能够驱动所述水射流强化设备在空间任意方向移动的驱动机构。
  2. 根据权利要求1所述的叶盘叶片水射流强化与抛光一体化系统，其特征在于：所述水射流强化设备包括高压水入口管、分流阀和磨粒混合连接阀，所述磨粒混合连接阀内设置有两个相互隔绝的磨粒混合腔，所述高压水入口管和每个所述磨粒混合腔都一端与所述分流阀连通，每个所述磨粒混合腔都连通有一个磨粒入口，所述磨粒入口远离对应的所述磨粒混合腔的一端都连接有磨粒进料管；每个所述磨粒混合腔的另一端均固连有射流管，所述射流管远离所述磨粒混合腔的一端设置有射流喷头，且一个所述射流管上的所述射流喷头与另一个所述射流管上的所述射流喷头一一对应，相对应的两个所述射流喷头相向设置。
  3. 根据权利要求2所述的叶盘叶片水射流强化与抛光一体化系统，其特征在于：所述磨粒混合连接阀内设置有两个所述磨粒混合腔，所述分流阀为三通分流阀；所述磨粒混合腔通过高压分流管与所述分流阀连通。
  4. 根据权利要求1所述的叶盘叶片水射流强化与抛光一体化系统，其特征在于：还包括水箱，所述振动抛光槽和所述工作台均设置在所述水箱内，且所述工作台与所述水箱固连。
  5. 根据权利要求1所述的叶盘叶片水射流强化与抛光一体化系统，其特征在于：还包括叶盘回转单元，所述叶盘回转单元包括固设在所述工作台上且位于所述振动抛光槽下方的立式转台，所述夹具与所述叶盘同轴，所述夹具与所述立式转台的转动盘固连，所述立式转台上设置有用于驱动所述转动 盘转动的转台伺服电机。
  6. 根据权利要求5所述的叶盘叶片水射流强化与抛光一体化系统，其特征在于：所述转动盘通过密封过渡环与所述振动抛光槽的底板转动密封连接。
  7. 根据权利要求5所述的叶盘叶片水射流强化与抛光一体化系统，其特征在于：所述驱动机构采用六自由度机械臂；所述振动电机为四个。
  8. 根据权利要求7所述的叶盘叶片水射流强化与抛光一体化系统，其特征在于：所述振动电机、所述转台伺服电机和所述驱动机构分别与控制器电连接，所述控制器设置在电控柜中。
  9. 叶盘叶片水射流强化与抛光一体化方法，其特征在于，基于权利要求1-8任意一项所述的叶盘叶片水射流强化与抛光一体化系统，将待处理的叶盘用夹具夹持，在振动抛光槽内充入研磨液，通过振动电机驱动所述振动抛光槽振动，同时通过驱动机构驱动水射流强化设备移动以对所述叶盘的所有叶片依次进行水射流强化。
  10. 根据权利要求9所述的叶盘叶片水射流强化与抛光一体化方法，其特征在于，基于权利要求2或3所述的叶盘叶片水射流强化与抛光一体化系统，在通过所述驱动机构驱动所述水射流强化设备对单个所述叶片进行水射流强化时：使得一个所述射流喷头正对所述叶片的正面，另一个所述射流喷头正对所述叶片的背面，且使两个所述射流喷头与所述叶片的距离相等。
PCT/CN2023/087192 2022-07-05 2023-04-10 叶盘叶片水射流强化与抛光一体化系统与方法 WO2024007647A1 (zh)

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