WO2012064310A1 - Instrument ultrasonore pour le traitement par percussion de pièces difficilement accessibles et de joints de soudure - Google Patents

Instrument ultrasonore pour le traitement par percussion de pièces difficilement accessibles et de joints de soudure Download PDF

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Publication number
WO2012064310A1
WO2012064310A1 PCT/UA2010/000097 UA2010000097W WO2012064310A1 WO 2012064310 A1 WO2012064310 A1 WO 2012064310A1 UA 2010000097 W UA2010000097 W UA 2010000097W WO 2012064310 A1 WO2012064310 A1 WO 2012064310A1
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WO
WIPO (PCT)
Prior art keywords
head
strikers
working end
drive
ultrasonic
Prior art date
Application number
PCT/UA2010/000097
Other languages
English (en)
Russian (ru)
Inventor
Юрий КУДРЯВЦЕВ
Якоб КЛЕЙМАН
Олександр ЛУГОВСЬКИЙ
Андрей МОВЧАНЮК
Original Assignee
Kudryavtsev Yuriy
Kleiman Jacob
Lugovskyi Oleksandr
Movchanyuk Andrey
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kudryavtsev Yuriy, Kleiman Jacob, Lugovskyi Oleksandr, Movchanyuk Andrey filed Critical Kudryavtsev Yuriy
Publication of WO2012064310A1 publication Critical patent/WO2012064310A1/fr

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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
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency

Definitions

  • the invention relates to the field of technological use of energy of ultrasonic vibrations and can be used in mechanical engineering, aircraft, shipbuilding, construction of steel towers, oil platforms, artificial islands and railway bridges, as well as in other industries in which designs operating under alternating loads are used and, accordingly, having a high probability of fatigue failure.
  • Surface impact treatment of metal products and welds significantly increases the working capacity and service life of structures.
  • plastic deformation such as balls, rollers, shot blasting, vibro-rolling, and others, are widely used.
  • Significantly increased interest in high-energy types of surface treatment which include surface hardening using intense ultrasonic vibrations. This method allows to achieve a significant increase in fatigue strength and wear resistance of structures.
  • the efficiency and productivity of the ultrasonic impact process largely depends on the design of the ultrasonic tool used.
  • the prior art includes an ultrasonic tool for impact processing of parts and welded joints (Indian patent N ° 2179919 C2, IPC B25D 9/14, B06B 1/08, B06B 1/12, B24B 39/04, 2000), comprising a housing with a handle, a source excitation of vibrations in the form of an ultrasonic vibrating drive with an ultrasonic transducer and a forced cooling system placed with a gap in the housing on the slide rails with the possibility of reciprocating motion and in contact with the housing through the spring, as well as the head with strikers, fixed on the housing coaxially with the vibratory drive, and the strikers are mounted movably in the holes of the head normally to the end working surface of the vibrating drive and come into contact with it when it is pressed against the workpiece surface of the part or weld.
  • the air cooling system removes heat only from the ultrasonic transducer.
  • the head with the strikers which is very hot during operation, is not cooled in this device, which significantly reduces the time of continuous operation of the vibro-shock tool.
  • Another disadvantage of the device is that due to the location of the strikers normally to the end working surface of the vibrating drive, it is possible to process only easily accessible welds and surfaces of parts that are located normally to the ultrasonic instrument. But there are many cases where the inclination of the surface of the part or the location of the weld the seam due to structural obstacles does not allow to install an ultrasonic instrument normally to them and to conduct high-quality impact processing. These surfaces and welds remain untreated, which does not allow to increase the overall reliability and performance of the part or machine as a whole. Thus, the tool under consideration has limited functionality.
  • the prior art also includes an ultrasonic tool for impact processing of parts and welded joints (Ukrainian Patent JYO 68264, IPC V24V 39/00, V06V 1/06, 2007), comprising a housing with a handle, in which on the slide rails with the possibility of axial reciprocating movement a metal cup is installed, in which an ultrasonic vibrational reciprocating drive is installed through the vibration isolation seal, a pneumatic chamber with a spring is placed coaxially with the cup in the housing, the cup is also equipped with a nozzle d, on which, with the possibility of rotation around the axis and quick removal, a head is installed with strikers mounted normally to the output end of the vibration drive with the possibility of reciprocating movement and contact with the output end of the vibration drive.
  • Such an instrument has an ineffective cooling system: a heated ultrasonic vibratory drive, placed in a sealed metal can, only gives off a small external surface due to convection of atmospheric air.
  • the heated head with strikers also does not have forced cooling and is cooled only due to ineffective natural air convection. Dust, pollution elements and metal shavings that cover the work surface during impact processing, firstly interfere with visual inspection of the processing place, and secondly, getting into the small gaps between the movable strikers and the head, wedge the strikers and stop the vibration mode of the tool.
  • the tool under consideration has the normal location of the strikers to the output end of the vibration drive, which in many cases does not allow to process hard-to-reach surfaces of parts and welds due to structural obstacles.
  • this tool when applying the technology of impact processing, it is not possible to fully increase the reliability and operability of an individual part or machine as a whole. That is, and this tool has limited functionality.
  • Patent of Ukraine JV ° 87006, IPC V24V 39/00, V06V 1/06, V24V 1/04 2009 with the properties of the preamble of paragraph 1 of the claims discloses an ultrasonic device for impact processing of hard-to-reach parts and welded joints, which already has a reliable forced air system cooling.
  • the air outlet through the head with the strikers provides blowing of contaminants from the surface and prevents jamming of the strikers in the head due to clogging of the gaps.
  • the presence of a cracker of high-strength material between the working end of the vibration drive and the ends of the strikers allows you to tilt the strikers at an angle of up to 45 degrees.
  • the invention is presented and characterized in the main formula.
  • the purpose of the invention is the expansion of functionality and increase the efficiency of the known ultrasonic tool for impact processing of hard-to-reach parts and welded connections due to the use of a new tool design, in which the strikers can be tilted to any angle from 0 to 180 degrees and at the same time not to lose the force developed by the vibration drive.
  • this goal is proposed to be achieved through the use of a constructive version of the tool, the head of which does not have protruding strikers, which allows you to process holes of relatively small sizes.
  • An ultrasonic tool for impact processing of hard-to-reach parts and welded joints consists of a housing with a handle, in which a slide is placed with the help of sliding guides along the housing, a head with strikers is placed at one end thereof, which is fixed relative to the glass by means of a ring the spring of the ball entering the holes made on the head with angular discreteness, at the other end there is a fitting for supplying air of the forced cooling and electric cable of the ultrasonic vibrations generator, and in the middle of the glass, an ultrasonic vibrational reciprocating drive is placed acoustically untied, the working end of which interacts with a cracker made of high-strength material, which, in turn, interacts with the ends of the heads of the head mounted movably in the head with the opportunity is pressed to the surface to be processed manually or by means of a spring, which is located between the body and the glass, and in the glass is provided through th passage of forced cooling with air from the end fitting around the
  • the cracker can be made integrally with the strikers in the form of a plate placed perpendicular to the working end of the vibration drive with the possibility of swinging around an axis fixed in the head parallel to the working end of the vibration drive, and having a contact surface for interaction with the working end of the vibration drive and contact surface in the form of a striker head for interaction with the surface to be treated.
  • Expanding the functionality and increasing the efficiency of the known ultrasonic tool for impact processing of hard-to-reach parts and welded joints is achieved through the use of a new head design, which allows you to place the strikers in the head at any angle of inclination and at the same time not to lose the force of the vibration drive.
  • a tool is proposed, in the head of which a cracker and striker are structurally combined, which allows to significantly reduce the size of the head and provide the ability to process small holes.
  • figure 2 presents an enlarged diagram of the design of the head with a striker, tilted at an angle of 90 degrees;
  • FIG. 3 Fig. 4 and Fig. 5 are examples of construction schemes for the head cracker at various angles of inclination of the strikers; figure 6 presents a variant of the diagram of the tool, in the head of which the cracker and the strikers are combined.
  • An ultrasonic tool for impact processing of hard-to-reach places of parts and welded joints (Fig. 1) comprises a housing 1 with a handle 2, in which a cup 4 is installed using sliding guides 3, which has the ability to reciprocate due to a pin 5 mounted on the cup 4 and included in the longitudinal groove of the housing 1. At one end of the cup 4 is fixed a head 6 with strikers 7. In the middle of the cup 4 an ultrasonic vibrational reciprocating drive is placed acoustically isolated (not shown conventionally in figure 1) .
  • Acoustic isolation is achieved by attaching an ultrasonic drive, formed by an ultrasonic transducer connected to an oscillating speed transformer, through a vibration-isolating seal with a nodal plane, i.e., a place where vibrations are absent or have a minimum value.
  • a fitting 8 for supplying air to the forced cooling system and an electric cable 9 of an ultrasonic oscillation generator (not shown conventionally in the diagram).
  • a glass 4 with a head 6 and strikers 7 is pressed manually onto the surface to be treated.
  • the head 6 is mounted on the end of the glass 4 with the possibility of rotation and quick removal. This is achieved using the ball 12 ( Figure 2), a flat cylindrical spring 13 and holes on the cylindrical surface of the head 6, into which the ball 12 can enter.
  • the ball 12 ( Figure 2), a flat cylindrical spring 13 and holes on the cylindrical surface of the head 6, into which the ball 12 can enter.
  • the ball is rigidly fixed with a clamp 14.
  • an axis 16 is installed, which is fixed from falling out by an annular spring 17.
  • a cracker 18 is installed in the form of a plate placed perpendicular to the working end 15 of the vibration drive, has contact surfaces for interacting with the working end 15 of the vibration drive (surface 19) and the ends of the strikers 7 (surface 20).
  • the strikers 7 are mounted in the head 6 movably in the guide holes (figure 2 shows a variant with one striker). Coaxially with the strikers in the head 6, the openings 21 are made opposite the strikers, the diameter of which exceeds the maximum diameter of the striker 7.
  • the strikers 7 can be arranged in the head 6 at different angles (Fig. 3, Fig. 4 and Fig. 5).
  • the ratio of the distances] and ⁇ 2 (Fig. 4) from the axis of swing to the centers of the contact surfaces of the plate with the working end of the vibration drive and the ends of the strikers sets the transformation coefficient of the amplitude of vibrations from the working end of the vibratory drive to the strikers.
  • the head 6 can be made without strikers and holes opposite them (Fig.6), and cracker 18 can be made integrally with the strikers in the form of a plate mounted with a possibility of swinging and having a contact surface 19 for interaction with the working end face of the vibration the drive and the contact surface 22 in the form of the head of the striker for interaction with the treated surface 1 1.
  • Ultrasonic instrument works as follows.
  • the head 6 with the strikers is inserted into the tool 7.
  • the head is inserted at the necessary discrete rotation angle around the longitudinal axis of the tool, which is fixed by a ball 12, which enters the hole on the cylindrical part of the head.
  • Ball 12 clamp clamp 14.
  • the ultrasonic instrument is ready for operation.
  • the strikers 7 are brought into mechanical contact with the machined metal surface 11.
  • the operator presses the housing 1 by pressing the handle 2 relative to the cup 4 and compresses the spring 10.
  • the tool is pressed against the surface to be machined by spring 10 with a force of 40 .. 60 N.
  • an ultrasonic frequency voltage is supplied through the cable 9 from the oscillation generator to the ultrasonic transducer of the vibration drive, which leads to the excitation of resonant elastic longitudinal mechanical fluctuations. Due to the use of vibrational speed in the vibrational drive of the transformer, the amplitude of oscillations of the working end 15 reaches 20 ... 30 microns.
  • the cracker 18 swings around the axis 16, and the strikers perform longitudinal vibrations in the guide holes of the head 6.
  • the kinetic energy received by the strikers 7 from the ultrasonic transducer is spent on deforming the surface 11 and on their elastic rebound back. If the angle of inclination of the strikers is equal to or greater than 90 degrees, the operator presses the tool to the work surface with his own force. In this case, the spring 10 does not affect the operation of the tool.
  • the clamp 14 keeps the head 6 from falling out, because when the strikers are pressed against the work surface 1 1, in the case of excitation of the vibration mode, the force acting from the working end 15 of the vibration drive through the contact surface 19 on the cracker 18 and the hammer 7 will also act on the axis 16 pushing the head 6 out of the tool. If it is necessary to replace the worn-out strikers 7, the head 6 is removed from the tool, turned in such a way that the cracker 18 throws itself on the axis 16 and opens the holes 21 through which the strikers fall out of the head and can be replaced with new ones. Alternatively, if it is necessary to carry out impact processing, for example, of the forming surface of relatively small holes, the cracker is performed as one unit with the striker.
  • a contact surface 22 is made in the form of the head of the striker 7.
  • Such a design of the cracker provides a reduction in the energy loss of the tool, since one shock transition of energy is excluded.
  • the contact surface 22 will not directly strike the work surface 1 1, which occurred during the movement of the strikers in the guide holes of the head, but due to the swing axis, the impact will be oblique, which will lead to additional smoothing of the impact site, which will increase quality impact processing.
  • the proposed ultrasonic tool for impact processing of hard-to-reach places of parts and welded joints allows you to process surfaces to which it is difficult or impossible to reach with a known ultrasonic tool with an axial arrangement of the strikers.
  • the new tool only by changing the head allows you to expand the strikers at an angle from 0 to 180 degrees and process a wide range of complex surfaces, inaccessible welds and small holes. This greatly expands the functionality of the tool.
  • the proposed design of the swinging cracker of the tool head increases the efficiency and quality of ultrasonic impact processing of parts and welded joints.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne des instruments ultrasonores pour le traitement par percussion de pièces difficilement accessibles et de joints de soudure. L'instrument comprend un corps pourvu d'une poignée et de glissières dans lesquelles est montée une douille pouvant se déplacer axialement par va-et-vient. Une tête pourvue de percuteurs est placée à l'extrémité de la douille. Un appareil d'entraînement à vibrations ultrasonores, dont l'extrémité de travail a une interaction avec un coulisseau, est placé au centre de la douille. Le coulisseau se présente sous la forme d'une plaque disposée perpendiculairement à l'extrémité de travail de l'appareil d'entraînement à vibrations ultrasonores et a une interaction avec les extrémités des percuteurs de la tête, et est monté de façon à pouvoir osciller autour d'un axe fixé dans la tête. Des ouvertures, ayant un diamètre dépassant le diamètre maximum d'un percuteur, sont formées dans la tête de manière coaxiale par rapport aux percuteurs.
PCT/UA2010/000097 2010-11-12 2010-12-27 Instrument ultrasonore pour le traitement par percussion de pièces difficilement accessibles et de joints de soudure WO2012064310A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2010013463 2010-11-12
RUA201013463 2010-11-12

Publications (1)

Publication Number Publication Date
WO2012064310A1 true WO2012064310A1 (fr) 2012-05-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014106043A1 (de) * 2014-04-04 2015-10-08 Matthias Kranz Vorrichtung zur Übertragung einer Schlagbewegung eines Schlagorgans und Schlagwerkzeug
CN108971885A (zh) * 2018-09-29 2018-12-11 山东华云机电科技有限公司 一种加工工件具有倒凹结构特征的超声金属表面加工刀具及其应用

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020014100A1 (en) * 2000-05-30 2002-02-07 Prokopenko George I. Device for ultrasonic peening of metals
RU2266805C1 (ru) * 2004-11-30 2005-12-27 Общество с ограниченной ответственностью "Ультразвуковая техника - инлаб" Ультразвуковой обрабатывающий инструмент
UA87006C2 (uk) * 2007-06-08 2009-06-10 Георгий Иванович Прокопенко Ультразвуковий інструмент для деформаційного зміцнення і релаксаційної обробки металів

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020014100A1 (en) * 2000-05-30 2002-02-07 Prokopenko George I. Device for ultrasonic peening of metals
RU2266805C1 (ru) * 2004-11-30 2005-12-27 Общество с ограниченной ответственностью "Ультразвуковая техника - инлаб" Ультразвуковой обрабатывающий инструмент
UA87006C2 (uk) * 2007-06-08 2009-06-10 Георгий Иванович Прокопенко Ультразвуковий інструмент для деформаційного зміцнення і релаксаційної обробки металів

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014106043A1 (de) * 2014-04-04 2015-10-08 Matthias Kranz Vorrichtung zur Übertragung einer Schlagbewegung eines Schlagorgans und Schlagwerkzeug
CN108971885A (zh) * 2018-09-29 2018-12-11 山东华云机电科技有限公司 一种加工工件具有倒凹结构特征的超声金属表面加工刀具及其应用
CN108971885B (zh) * 2018-09-29 2024-01-23 山东华云机电科技有限公司 一种加工工件具有倒凹结构特征的超声金属表面加工刀具及其应用

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