WO2021184635A1 - 一种辅助珩磨发动机喷油嘴孔的超声振动平台装置 - Google Patents

一种辅助珩磨发动机喷油嘴孔的超声振动平台装置 Download PDF

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WO2021184635A1
WO2021184635A1 PCT/CN2020/105365 CN2020105365W WO2021184635A1 WO 2021184635 A1 WO2021184635 A1 WO 2021184635A1 CN 2020105365 W CN2020105365 W CN 2020105365W WO 2021184635 A1 WO2021184635 A1 WO 2021184635A1
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honing
column
vibration platform
injection nozzle
fuel injection
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PCT/CN2020/105365
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English (en)
French (fr)
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陈玉荣
苏宏华
傅玉灿
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江苏集萃精密制造研究院有限公司
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Publication of WO2021184635A1 publication Critical patent/WO2021184635A1/zh

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    • 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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
    • 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
    • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces

Definitions

  • the invention relates to the field of processing aeroengines, in particular to an ultrasonic vibration platform device that assists in honing an engine fuel injection nozzle hole.
  • the purpose of the present invention is to solve the above-mentioned problems in the prior art and provide an ultrasonic vibration platform device that assists in honing the nozzle hole of an engine. Improve the roughness of the hole wall and suppress the generation of burrs at the exit of the hole.
  • An ultrasonic vibration platform device for assisting in honing an engine fuel injection nozzle hole, which includes a vibration platform adapter housing, a piezoelectric transducer, an ultrasonic power supply, and a fuel injection nozzle fixing part.
  • a accommodating cavity is formed in the vibration platform adapter housing, The piezoelectric transducer is fixed in the accommodating cavity.
  • the piezoelectric transducer includes an auxiliary honing column, a piezoelectric ceramic sheet, and an electrode sheet. The piezoelectric ceramic sheet and the electrode sheet are tightly connected and fixed, and the piezoelectric ceramic sheet is fixed with the auxiliary honing column.
  • the electrode sheet is connected to the ultrasonic power supply
  • the auxiliary honing column is a column with an axial through hole, and its upper end is provided with a fuel injection nozzle fixing hole connected with the axial through hole, and the engine fuel injection nozzle can be partially put into the fuel injection In the nozzle fixing hole, the fuel injection nozzle fixing piece is fixedly connected with the auxiliary honing column, and the engine fuel injection nozzle is pressed and fixed on the upper end of the auxiliary honing column.
  • the engine fuel injection nozzle is provided with a fuel injection nozzle hole, and the honing tool is inserted into the fuel injection nozzle hole for honing.
  • the ultrasonic power supply can provide ultrasonic electrical signals to the piezoelectric ceramic sheet through the electrode sheet, so that the piezoelectric ceramic sheet drives the entire piezoelectric transducer to vibrate, thereby causing vibration and friction between the nozzle hole and the honing tool.
  • the upper end of the above-mentioned accommodating cavity has an opening, a seat groove is arranged inside the opening, a fixed flange is arranged on the upper part of the auxiliary honing column, and the fixed flange sits on the seat groove in an interference fit, and a flange gland is covered on the fixed flange, and It is fixedly connected with the transfer shell of the vibration platform, the fixed flange is pressed and fixed in the seat groove, and the fixed flange seals the accommodating cavity.
  • Both the upper surface and the lower surface of the above-mentioned fixed flange are provided with vibration isolation grooves, and the vibration isolation grooves can isolate the vibration transmitted from the auxiliary honing column from the outer end of the fixed flange.
  • the above-mentioned auxiliary honing column is equipped with a ceramic sheet pressing ring, the piezoelectric ceramic sheet is installed under the fixed flange, and the ceramic sheet pressing ring can be sleeved on the auxiliary honing column from the lower end of the auxiliary honing column and fixed with the auxiliary honing column Connect, press and fix the piezoelectric ceramic sheet between the fixed flange and the ceramic sheet pressing ring.
  • the lower end of the above-mentioned auxiliary honing column penetrates from the lower end of the vibration platform transfer housing, and the vibration platform transfer housing has a sealing groove at the exit of the auxiliary honing column.
  • the sealing ring and the sealing ring are sequentially placed in the sealing groove to make the auxiliary honing column
  • the lower end is sealed with the vibration platform transfer shell, and then the seal ring and the seal ring are compressed and fixed in the seal groove through the seal ring pressure block, and the seal ring pressure block is fixedly matched with the vibration platform transfer shell.
  • the above-mentioned vibration platform adapter shell is sealed with a waterproof aviation plug, and the electrode sheet is connected with the ultrasonic power source through the waterproof aviation plug.
  • the above-mentioned vibration platform adapter shell is provided with two compressed air quick connectors.
  • the compressed air quick connectors are connected with the accommodating cavity. Air can enter the accommodating cavity from the air inlet pipe and flow out from the air outlet pipe to cool down the piezoelectric ceramic sheets and electrode sheets placed in the accommodating cavity.
  • a number of countersunk holes are provided at the lower end of the above-mentioned vibration platform transfer housing, and the countersunk holes are used to cooperate with fasteners to fix the vibration platform transfer housing.
  • the ultrasonic vibration platform device for assisting the honing of the fuel injection nozzle hole of the engine of the present invention is a special processing method that combines ultrasonic vibration with traditional honing processing.
  • the ultrasonic vibration device makes the tool and the workpiece produce high-frequency relative movement, and the relative scratching between the tool abrasive particles and the surface of the workpiece can effectively improve the processing surface, reduce the cutting force, and increase the service life of the tool.
  • the frequency and amplitude of vibration play a vital role in the removal of small hole burrs. Different amplitude and frequency will affect the relative movement speed between the tool and the workpiece. It is an important index to improve the quality of the hole wall and the exit burr.
  • the performance of vibration in various application fields adopts different vibration parameters to improve the processing quality of small holes of aviation fuel injectors.
  • the invention uses the sandwich piezoelectric piezoelectric transducer to drive the fuel injection nozzle to generate high-frequency vibration, so that the relative scratching effect between the tool abrasive particles and the surface of the workpiece can effectively improve the processing surface, reduce the cutting force, and improve the tool performance.
  • the service life can suppress the burr of the outlet; at the same time, the improvement of the tool life can also reduce the production of the bell mouth after processing.
  • This device can effectively improve the processing quality and processing efficiency of the nozzle hole, and has a broad application prospect.
  • Figure 1 is a schematic diagram of the structure of the present invention
  • Figure 2 is a schematic diagram of the structure of a piezoelectric transducer
  • Figure 3 is a schematic diagram of the structure of the auxiliary honing column
  • Figure 4 is a schematic diagram of the structure of the vibration platform transfer housing
  • Fig. 5 is a schematic diagram of an application example of the present invention.
  • the reference signs are: vibrating platform adapter housing 1, accommodating cavity 11, seat groove 12, flange gland 13, sealing ring and sealing ring 14, sealing ring pressure block 15, waterproof aviation plug 16, compressed air quick connector 17, Counterbore 18, piezoelectric transducer 2, auxiliary honing column 21, piezoelectric ceramic sheet 22, electrode sheet 23, fuel injection nozzle fixing hole 24, fixing flange 25, vibration isolation groove 26, ceramic sheet compression ring 27 , Ultrasonic power supply 3, fuel injection nozzle fixing part 4, engine fuel injection nozzle 5, fuel injection nozzle hole 51, honing tool 6, knife handle 61.
  • an ultrasonic vibration platform device for assisting in honing an engine fuel injection nozzle hole of the present invention mainly includes a vibration platform adapter housing 1, a flange gland 13, a sealing ring and a sealing ring 14, and a waterproof aviation plug 16 , Compressed air quick connector 17, piezoelectric transducer 2, ultrasonic power supply 3 and other structures, the piezoelectric transducer 2 is a cylinder as a whole, which includes an auxiliary honing column 21 and a piezoelectric The ceramic sheet 22, the electrode sheet 23 and the ceramic sheet pressing ring 27, the ceramic sheet pressing ring 27 and the auxiliary honing column 21 fix the piezoelectric ceramic sheet 22 and the electrode sheet 23 by screw locking.
  • the auxiliary honing column 21 has a central axial through-hole structure, the diameter of the axial through-hole is 6mm, and the material is TC4 titanium alloy.
  • the upper end of the auxiliary honing column 21 is an M19 thread structure, and the auxiliary honing column 21 The upper end is provided with a nozzle fixing hole 24 with a diameter of 10mm and a depth of 6mm.
  • the engine fuel injection nozzle 5 is placed in the fuel injection nozzle fixing hole 24 at the upper end of the auxiliary honing column 21, and is screwed on the M19 threaded structure by the fuel injection nozzle fixing member 4 to be pressed and fixed; the auxiliary honing column 21 has a diameter of 52mm and a thickness in the middle.
  • the fixed flange 25 is 5mm.
  • the upper and lower sides of the fixed flange 25 are provided with vibration isolation grooves 26 with a groove width of 2mm and a depth of 3mm, which are used for the vibration damping effect of the piezoelectric transducer assembly;
  • the lower end of the auxiliary honing column 21 is M14 ⁇ 1.5 screw structure, the end of the screw is provided with a cylindrical structure with a diameter of 8mm and a length of 7.5mm.
  • the bottom of the vibration platform transfer housing 1 is a through-hole thread structure, and the lower end cylindrical structure of the auxiliary honing column 21 is transferred from the vibration platform to the housing 1. Pierce out the bottom.
  • the diameter of the piezoelectric ceramic sheet 22 is 30 mm, the material is PZT-8, and the size is: ⁇ 30mm ⁇ 15mm ⁇ 5mm, the number of piezoelectric ceramic sheets 22 is 4; the material of the ceramic sheet pressing ring 27 is stainless steel.
  • the O-shaped sealing ring and the sealing ring are sequentially sleeved on the unthreaded part of the lower end of the screw of the auxiliary honing column 21, and the sealing ring pressing block 15 is pressed and fixed.
  • the working frequency range of the ultrasonic vibration platform device for auxiliary honing the fuel injection nozzle hole of the engine of the present invention is 19kHz-40kHz.
  • the material of the engine fuel injection nozzle 5 is stainless steel, with a 0.8mm diameter fuel injection nozzle hole 51 in the center, which is installed in the fuel injection nozzle fixing hole 24 of the auxiliary honing column 21 and fixed and compressed by the fuel injection nozzle fixing member 4.
  • the vibration platform adapter housing 1 is a cylindrical structure, the material is 316L stainless steel, the top of the vibration platform adapter housing 1 is an M54 ⁇ 1 thread, and the seat groove 12 is provided with a ring for placing an O-ring seal
  • the groove and the side wall are provided with two M5 ⁇ 0.8 threaded holes.
  • the compressed air quick connector 17 is installed in the threaded hole and connected with the compressed air pipe pump to provide cooling for the entire device.
  • the waterproof aviation plug 16 is fixed on the outer circular side wall of the vibration platform transfer housing 1 by screws.
  • the positive and negative poles of the waterproof aviation plug 16 are connected with the positive and negative poles of the piezoelectric transducer 2, and the ultrasonic power source 3 is the piezoelectric transducer 2.
  • the tool handle 61 drives the honing tool 6 to rotate, and the honing tool 6 passes through the fuel injection nozzle hole 51 of the engine fuel injection nozzle 5, and the side wall of the inner hole is processed.
  • the waterproof aviation plug 16 is connected to the ultrasonic power source 3.
  • the ultrasonic power source 3 provides an ultrasonic electric signal with a frequency of 32.5 ⁇ 0.5kHz for the ultrasonic vibration platform device that assists in honing the engine nozzle hole.
  • the piezoelectric transducer 2 drives the engine nozzle 5
  • the vibration with an amplitude of 0-5 ⁇ m and a frequency of 32.5kHz is generated; the compressed air is transferred from the vibration platform to the compressed air quick connector 17 on the side wall of the housing 1 to cool the piezoelectric transducer 2 in the working process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

本发明公开了一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，包括振动平台转接外壳、压电换能器、超声波电源以及喷油嘴固定件，振动平台转接外壳中形成有容纳腔，压电换能器固定于容纳腔中，压电换能器包括辅助珩磨柱、压电陶瓷片以及电极片，压电陶瓷片与电极片贴紧固定连接，压电陶瓷片与辅助珩磨柱固定连接，电极片与超声波电源连接，发动机喷油嘴能部分放入喷油嘴固定孔中，喷油嘴固定件与辅助珩磨柱固定连接，并将发动机喷油嘴压固在辅助珩磨柱上端。本发明能带动喷油嘴产生高频的振动，从而在振动加工过程中提高小孔孔壁的粗糙度和抑制小孔出口毛刺的产生。

Description

一种辅助珩磨发动机喷油嘴孔的超声振动平台装置 技术领域
本发明涉及利用航空发动机加工领域，具体涉及一种辅助珩磨发动机喷油嘴孔的超声振动平台装置。
背景技术
在传统喷油嘴制孔加工过程中，小孔出口端产生的毛刺、孔壁粗糙度高和孔径大小，这些因素均会影响燃油雾化的雾滴直径、喷射角度、燃烧效率和加工效率，严重制约着航空发动机的发展，因此需要一种新的加工方法来提高喷油嘴小孔的加工效率与加工质量。
发明内容
本发明的目的是针对现有技术存在的上述问题，提供一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，目的是通过此装置带动喷油嘴产生高频的振动，从而在振动加工过程中提高小孔孔壁的粗糙度和抑制小孔出口毛刺的产生。
为实现上述技术目的，本发明采取的技术方案为：
一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其中：包括振动平台转接外壳、压电换能器、超声波电源以及喷油嘴固定件，振动平台转接外壳中形成有容纳腔，压电换能器固定于容纳腔中，压电换能器包括辅助珩磨柱、压电陶瓷片以及电极片，压电陶瓷片与电极片贴紧固定连接，压电陶瓷片与辅助珩磨柱固定连接，电极片与超声波电源连接，辅助珩磨柱为具有轴向通孔的柱体，其的上端开设有与轴向通孔连通的喷油嘴固定孔，发动机喷油嘴能部分放入喷油嘴固定孔中，喷油嘴固定件与辅助珩磨柱固定连接，并将发动机喷油嘴压固在辅助珩磨柱上端，发动机喷油嘴设置有喷油嘴孔，珩磨刀具插入喷油嘴孔珩磨时，超声波电源能通过电极片向压电陶瓷片提供超声电信号，使压电陶瓷片带动整个压电换能器振动，进而使喷油嘴孔与珩磨刀具产生振动摩擦。
为优化上述技术方案，采取的具体措施还包括：
上述的容纳腔上端开口，该开口内侧设置有座槽，辅助珩磨柱上部设有固定法兰，固定法兰过盈配合地坐在座槽上，一法兰压盖盖在固定法兰上，并与振动平台转接外壳固定连接，将固定法兰压固在座槽中，固定法兰将容纳腔密封。
上述的固定法兰中部的上表面和下表面均设置有隔振槽，隔振槽能将辅助珩磨柱传来的振动与固定法兰外端隔离。
上述的辅助珩磨柱上安装有陶瓷片压紧环，压电陶瓷片安装在固定法兰下方，陶瓷片压 紧环能从辅助珩磨柱的下端套在辅助珩磨柱上，并与辅助珩磨柱固定连接，将压电陶瓷片压紧固定在固定法兰与陶瓷片压紧环之间。
上述的辅助珩磨柱下端从振动平台转接外壳的下端穿出，振动平台转接外壳在辅助珩磨柱的穿出处开设密封槽，在密封槽中依次放入密封环和密封圈，使辅助珩磨柱下端与振动平台转接外壳密封，再通过密封环压块将密封环和密封圈压紧固定在密封槽中，密封环压块与振动平台转接外壳固定配合。
上述的振动平台转接外壳上密封安装有防水航空插头，电极片通过防水航空插头与超声波电源连接。
上述的振动平台转接外壳上开设有两个压缩空气快速接头，压缩空气快速接头与容纳腔连通，其中一个压缩空气快速接头与进气管道连接，另一个压缩空气快速接头与出气管道连接，压缩空气能从进气管道进入容纳腔，并从出气管道流出，对置于容纳腔中的压电陶瓷片和电极片降温。
上述的振动平台转接外壳下端设置有若干个沉头孔，沉头孔用于与紧固件配合将振动平台转接外壳固定。
本发明的辅助珩磨发动机喷油嘴孔的超声振动平台装置，是一种超声振动与传统珩磨加工相结合的特种加工方式。超声振动辅助加工过程中，超声振动装置使工具与工件产生高频的相对运动，工具磨粒与工件表面间的相对划擦作用可有效的改善加工表面，减小切削力，提高刀具的使用寿命。同时，振动的频率和振幅对小孔毛刺的去除有着至关重要的作用，不同振幅和频率会影响工具与工件间的相对运动速度，是改善孔壁质量和出口毛刺的重要指标，为了提升超声振动在各个应用领域的性能，采取不同的振动参数对航空喷油嘴的小孔加工质量进行提高。本发明利用夹心式压电压电换能器带动喷油嘴产生高频振动，使工具磨粒与工件表面间的相对划擦作用，可有效的改善加工表面，减小切削力，提高刀具的使用寿命，抑制出口的毛刺；同时，工具寿命的改善，也可减小加工后喇叭口的产生，此装置可有效的提高喷油嘴小孔的加工质量与加工效率，具有广阔的应用前景。
附图说明
图1是本发明的结构示意图；
图2是压电换能器的结构示意图；
图3是辅助珩磨柱的结构示意图；
图4是振动平台转接外壳的结构示意图；
图5是本发明的应用实例示意图。
附图标记为：振动平台转接外壳1、容纳腔11、座槽12、法兰压盖13、密封环和密封圈14、密封环压块15、防水航空插头16、压缩空气快速接头17、沉头孔18、压电换能器2、辅助珩磨柱21、压电陶瓷片22、电极片23、喷油嘴固定孔24、固定法兰25、隔振槽26、陶瓷片压紧环27、超声波电源3、喷油嘴固定件4、发动机喷油嘴5、喷油嘴孔51、珩磨刀具6、刀柄61。
具体实施方式
以下结合附图对本发明的实施例作进一步详细描述。
结合图1所示，本发明的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，主要包括振动平台转接外壳1、法兰压盖13、密封环和密封圈14、防水航空插头16、压缩空气快速接头17、压电换能器2、超声波电源3等结构，压电换能器2整体为圆柱体，其包括辅助珩磨柱21及依次套设在辅助珩磨柱21上的压电陶瓷片22、电极片23和陶瓷片压紧环27，陶瓷片压紧环27和辅助珩磨柱21通过螺纹锁紧的方式将压电陶瓷片22、电极片23固定。
结合图2-3所示，辅助珩磨柱21为中心轴向通孔结构，轴向通孔直径为6mm，材料为TC4钛合金，辅助珩磨柱21上端为M19的螺纹结构，且辅助珩磨柱21上端设有直径为10mm，深度为6mm的喷油嘴固定孔24。发动机喷油嘴5放置在辅助珩磨柱21上端的喷油嘴固定孔24内，由喷油嘴固定件4旋在M19螺纹结构上压紧固定；辅助珩磨柱21中间设有直径为52mm，厚度为5mm的固定法兰25，固定法兰25的上下面设有槽宽为2mm，深度为3mm的隔振槽26，用于压电换能器装配振动减振作用；辅助珩磨柱21下端为M14×1.5的螺杆结构，螺杆末端设有直径为8mm，长度为7.5mm的圆柱结构，振动平台转接外壳1底部为通孔螺纹结构，辅助珩磨柱21下端圆柱结构从振动平台转接外壳1底部穿出。压电陶瓷片22直径30mm，材料为PZT-8，尺寸为：Φ30mm×Φ15mm×5mm，压电陶瓷片22的片数为4；陶瓷片压紧环27材料为不锈钢。O型密封圈和密封环依次套装在辅助珩磨柱21螺杆下端无螺纹部分，由密封环压块15压紧固定。
本发明的辅助珩磨发动机喷油嘴孔的超声振动平台装置工作频率范围为19kHz-40kHz。
发动机喷油嘴5材料为不锈钢，中心设有直径为0.8mm喷油嘴孔51，安装至辅助珩磨柱21的喷油嘴固定孔24内，并由喷油嘴固定件4固定压紧。
结合图4所示，振动平台转接外壳1为圆柱体结构，材料为316L不锈钢，振动平台转接外壳1顶端为M54×1的螺纹，座槽12上设置有用于放置O型密封圈的环形槽，侧壁设有两个M5×0.8的螺纹孔，压缩空气快速接头17安装至螺纹孔中并与压缩空气管泵相连，为整个装置提供冷却。防水航空插头16通过螺钉固定在振动平台转接外壳1外圆侧壁上，防水航空插 头16的正负极与压电换能器2正负极相连，超声波电源3为压电换能器2提供频率为19kHz-40kHz电信号。
结合图5所示，运行时，刀柄61带动珩磨刀具6旋转，珩磨刀具6从发动机喷油嘴5的喷油嘴孔51中穿出，并加工内孔侧壁。防水航空插头16与超声波电源3相连，超声波电源3为辅助珩磨发动机喷油嘴孔的超声振动平台装置提供频率为32.5±0.5kHz的超声电信号，压电换能器2带动发动机喷油嘴5产生振幅为0-5μm，频率为32.5kHz的振动；压缩空气从振动平台转接外壳1侧壁的压缩空气快速接头17进气出气用于冷却工作过程中的压电换能器2。
以上仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，应视为本发明的保护范围。

Claims (8)

  1. 一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征是：包括振动平台转接外壳(1)、压电换能器(2)、超声波电源(3)以及喷油嘴固定件(4)，所述的振动平台转接外壳(1)中形成有容纳腔(11)，所述的压电换能器(2)固定于容纳腔(11)中，所述的压电换能器(2)包括辅助珩磨柱(21)、压电陶瓷片(22)以及电极片(23)，所述的压电陶瓷片(22)与电极片(23)贴紧固定连接，压电陶瓷片(22)与辅助珩磨柱(21)固定连接，电极片(23)与超声波电源(3)连接，所述的辅助珩磨柱(21)为具有轴向通孔的柱体，其的上端开设有与轴向通孔连通的喷油嘴固定孔(24)，发动机喷油嘴(5)能部分放入喷油嘴固定孔(24)中，所述的喷油嘴固定件(4)与辅助珩磨柱(21)固定连接，并将发动机喷油嘴(5)压固在辅助珩磨柱(21)上端，发动机喷油嘴(5)设置有喷油嘴孔(51)，珩磨刀具(6)插入喷油嘴孔(51)珩磨时，所述的超声波电源(3)能通过电极片(23)向压电陶瓷片(22)提供超声电信号，使压电陶瓷片(22)带动整个压电换能器(2)振动，进而使喷油嘴孔(51)与珩磨刀具(6)产生振动摩擦。
  2. 根据权利要求1所述的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征是：所述的容纳腔(11)上端开口，该开口内侧设置有座槽(12)，所述的辅助珩磨柱(21)上部设有固定法兰(25)，所述的固定法兰(25)过盈配合地坐在座槽(12)上，一法兰压盖(13)盖在固定法兰(25)上，并与振动平台转接外壳(1)固定连接，将固定法兰(25)压固在座槽(12)中，所述的固定法兰(25)将容纳腔(11)密封。
  3. 根据权利要求2所述的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征是：所述的固定法兰(25)中部的上表面和下表面均设置有隔振槽(26)，所述的隔振槽(26)能将辅助珩磨柱(21)传来的振动与固定法兰(25)外端隔离。
  4. 根据权利要求3所述的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征是：所述的辅助珩磨柱(21)上安装有陶瓷片压紧环(27)，所述的压电陶瓷片(22)安装在固定法兰(25)下方，所述的陶瓷片压紧环(27)能从辅助珩磨柱(21)的下端套在辅助珩磨柱(21)上，并与辅助珩磨柱(21)固定连接，将压电陶瓷片(22)压紧固定在固定法兰(25)与陶瓷片压紧环(27)之间。
  5. 根据权利要求4所述的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征是：所述的辅助珩磨柱(21)下端从振动平台转接外壳(1)的下端穿出，所述的振动平台转接外壳(1)在辅助珩磨柱(21)的穿出处开设密封槽，在密封槽中依次放入密封环和密封圈(14)，使辅助珩磨柱(21)下端与振动平台转接外壳(1)密封，再通过密封环压块(15)将密封环和密封圈(14)压紧固定在密封槽中，所述的密封环压块(15)与振动平台转接外壳(1)固定配合。
  6. 根据权利要求5所述的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征 是：所述的振动平台转接外壳(1)上密封安装有防水航空插头(16)，所述的电极片(23)通过防水航空插头(16)与超声波电源(3)连接。
  7. 根据权利要求6所述的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征是：所述的振动平台转接外壳(1)上开设有两个压缩空气快速接头(17)，压缩空气快速接头(17)与容纳腔(11)连通，其中一个压缩空气快速接头(17)与进气管道连接，另一个压缩空气快速接头(17)与出气管道连接，压缩空气能从进气管道进入容纳腔(11)，并从出气管道流出，对置于容纳腔(11)中的压电陶瓷片(22)和电极片(23)降温。
  8. 根据权利要求7所述的一种辅助珩磨发动机喷油嘴孔的超声振动平台装置，其特征是：所述的振动平台转接外壳(1)下端设置有若干个沉头孔(18)，所述的沉头孔(18)用于与紧固件配合将振动平台转接外壳(1)固定。
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