CN112430810B - Ultrasonic laser composite surface strengthening device - Google Patents

Ultrasonic laser composite surface strengthening device Download PDF

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CN112430810B
CN112430810B CN202011270644.4A CN202011270644A CN112430810B CN 112430810 B CN112430810 B CN 112430810B CN 202011270644 A CN202011270644 A CN 202011270644A CN 112430810 B CN112430810 B CN 112430810B
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module
ultrasonic
shell
base
laser
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CN112430810A (en
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杨宇辉
魏昕
汪永超
董成祥
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Guangdong University of Technology
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Guangdong University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • 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
    • C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The invention relates to the technical field of ultrasonic laser cladding processing, in particular to an ultrasonic laser composite surface strengthening device which comprises a laser coaxial powder feeding cladding head, an ultrasonic vibration module, a rotation driving module, a three-axis movement module and a base; the ultrasonic vibration module and the rotation driving module are all fixedly arranged on the base, the ultrasonic vibration module and the rotation driving module are arranged on the base in a relative mode, the three-axis movement module is arranged on the base and movably connected with the base, and the laser coaxial powder feeding cladding head is arranged on the three-axis movement module and located above the ultrasonic vibration module. The ultrasonic laser composite surface strengthening device has the advantages of simple structure, convenient operation and long service life, can effectively improve the structure and the performance of the laser cladding layer on the gear surface, and greatly improves the production efficiency of ultrasonic laser cladding processing.

Description

Ultrasonic laser composite surface strengthening device
Technical Field
The invention relates to the technical field of ultrasonic laser cladding processing, in particular to an ultrasonic laser composite surface strengthening device.
Background
With the increasingly complex application environment, people put higher demands on the surface performance of gears, and not only are certain hardness and wear resistance required, but also ideal core toughness, corrosion resistance and the like are required. The conventional techniques, such as carburizing and the like, have difficulty meeting practical requirements. The laser cladding technology has the characteristics of controllable input heat, quick cooling, metallurgical bonding with a matrix and the like, so that the laser cladding technology has important application value in gear application industries such as aerospace, automobiles, medical treatment, chemical engineering and the like. However, the existing cladding layer processing technology has a few defects, and Chinese patent CN209923433U discloses a device for preparing a crack-free cladding layer by ultrasonic vibration assisted laser cladding, which can solve the problem of more cracks of a cladding layer of a curved surface part to a certain extent, but has poor cooling effect and is easy to generate residual tensile stress; on the other hand, the high temperature of the molten pool easily causes the coarse grains of the cladding layer; in addition, the cladding layer may have defects such as pores and cracks. These disadvantages of the existing devices limit the popularization and application of laser cladding technology in the gear industry.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the ultrasonic laser composite surface strengthening device which is simple in structure, convenient to operate and long in service life, can effectively improve the structure and performance of a gear tooth surface laser cladding layer, and greatly improves the production efficiency of ultrasonic laser cladding processing.
In order to solve the technical problems, the invention provides the following technical scheme:
an ultrasonic laser composite surface strengthening device comprises a laser coaxial powder feeding cladding head, an ultrasonic vibration module, a rotary driving module, a three-axis movement module and a base; the ultrasonic vibration module and the rotation driving module are all fixedly arranged on the base, the ultrasonic vibration module and the rotation driving module are arranged on the base in a relative mode, the three-axis movement module is arranged on the base and movably connected with the base, and the laser coaxial powder feeding cladding head is arranged on the three-axis movement module and located above the ultrasonic vibration module.
In the ultrasonic laser composite surface strengthening device, the structure and the performance of the gear surface laser cladding layer are improved by using the additional energy field of ultrasonic vibration, and the heat generated by the transducer is reduced by using the cooling compressed air, so that the production efficiency of ultrasonic laser cladding processing is improved, and the device has the characteristics of simple structure, convenience in operation, long service life and the like.
Further, the ultrasonic vibration module comprises a reciprocating motion assembly, a guide rail, a sliding block and an ultrasonic high-frequency vibration generating assembly; the guide rail is fixedly arranged on the base, the sliding block is connected to the guide rail in a sliding mode, the ultrasonic high-frequency vibration generating assembly is arranged on the sliding block, the reciprocating motion assembly is arranged on the base and connected with the ultrasonic high-frequency vibration generating assembly, the ultrasonic vibration additional energy field is utilized, and the structure and the performance of the gear tooth surface laser cladding layer are effectively improved.
Further, the ultrasonic high-frequency vibration generating assembly comprises a shell, a wireless energy transmission module, a transducer and a tool head; the wireless energy transmission module is arranged in the shell, the tool head is arranged outside the shell and positioned between the shell and the rotary driving module, and the wireless energy transmission module is connected with the tool head through the energy converter, so that the organization and the performance of a gear tooth surface laser cladding layer are effectively improved.
Furthermore, the wireless energy transmission module comprises a primary coil, a secondary coil and a fixed seat; the transducer comprises a pretightening nut, piezoelectric ceramics, a variable amplitude rod and a cover plate; the fixed seat is arranged on the shell and is positioned at one end far away from the rotary driving module, the primary side coil is fixedly arranged on the fixed seat, and the secondary side coil is fixedly arranged on the amplitude transformer; the amplitude transformer penetrates through the shell and is movably connected with the shell, one end of the amplitude transformer is connected with the tool head, the other end of the amplitude transformer is sequentially connected with the piezoelectric ceramics, the cover plate and the pre-tightening nut, the amplitude transformer, the piezoelectric ceramics and the cover plate are communicated with each other and are provided with pre-tightening bolts matched with the pre-tightening nuts, and the transmission effect is better.
Furthermore, a limiting ring, a limiting bearing and a fixing ring are arranged at the joint of the amplitude transformer and the shell; the fixed ring is arranged outside the shell, the limiting bearing and the limiting ring are sequentially arranged inside the shell, and the amplitude transformer is movably connected with the limiting ring, the limiting bearing and the fixed ring, so that the moving range of the amplitude transformer is effectively controlled.
The working principle of the ultrasonic vibration module is as follows: the ultrasonic transducer device comprises a piezoelectric ceramic, an amplitude transformer, a gear test piece, a rotary driving module, a gear test piece, a reciprocating motion assembly and a control module, wherein the piezoelectric ceramic is connected with the gear test piece through a connecting rod, the gear test piece is connected with the ultrasonic driver through a connecting rod, the ultrasonic driver is arranged outside the piezoelectric ceramic, the piezoelectric ceramic is wirelessly transmitted to a secondary coil through a primary coil, the piezoelectric ceramic is excited by an electric signal to generate axial high-frequency mechanical vibration, the vibration is amplified by the amplitude transformer and transmitted to the tool head, the tool head and the gear test piece are always in a pre-stress compression state, and therefore the high-frequency vibration is finally transmitted to the gear test piece, so that the gear test piece generates axial vibration.
Furthermore, an air inlet pipe communicated with the shell is arranged on the shell, the middles of the pre-tightening nut, the pre-tightening bolt, the cover plate, the piezoelectric ceramic, the amplitude transformer and the tool head are all designed into cavities communicated with the air inlet pipe, and cooled compressed air is output to a cavity of the fixing seat through the air inlet pipe to be cooled after being cooled by an external cooler, so that the cooling effect is good.
Furthermore, the rotary driving module comprises a motor, a coupler, a supporting seat, a supporting bearing, a rotating shaft and a three-jaw chuck; the supporting seat is fixedly arranged on the base, the supporting bearing is arranged on the supporting seat, the rotating shaft penetrates through the supporting bearing and is movably connected with the supporting bearing, the motor is arranged on the supporting seat, one end of the ultrasonic vibration module is far away from the rotating shaft and is connected with the motor, the other end of the rotating shaft is connected with the three-jaw chuck, and a gear test piece can be clamped better.
After the cooling compressed air is cooled by an external cooler, the cooling compressed air is output by an air inlet pipe to reach a cavity of the fixed seat and then is divided into two paths:
1. the first path forms an air curtain through annular gaps among the cover plate, the piezoelectric ceramics and the cavity of the fixed seat to cool the piezoelectric ceramics and the like, then the air curtain is output by the micropores of the magnetic ring seat of the secondary side coil, then the air curtain reaches the cavity of the shell, and finally the air curtain is extruded out by gaps such as a limiting ring diversion hole;
2. and the second path is directly conveyed to the inner diameter circular ring space of the gear test piece through an air outlet channel of a cavity in the middle of the pretightening nut, the pretightening bolt, the amplitude transformer, the tool head and the like, cools the gear test piece and the three-jaw chuck, and then flows out through a circumferential flow guide groove of an adjusting limiting ring of the three-jaw chuck.
Furthermore, be provided with on the rotation axis and be located the supporting seat with annular pressure sensor between the chuck, annular pressure sensor is last be provided with the adjusting nut that the rotation axis suits, annular pressure sensor with be provided with the pretension spring between the three-jaw chuck, the quantitative control of pretightning force size is detected the feedback by annular pressure sensor, can monitor the produced dynamic force size of ultrasonic vibration and change law simultaneously in real time.
Furthermore, the motor is connected with the rotating shaft through a coupler, so that the transmission effect is better.
The principle of the rotary driving module is as follows: the three-jaw chuck can be suitable for clamping and fixing a gear test piece within a certain specification range, after the gear test piece is fixed, the tool head is pushed by the reciprocating motion assembly to press the gear test piece, at the moment, the pre-tightening spring is compressed, the required pre-tightening force can be adjusted through the adjusting nut, the quantitative control of the pre-tightening force is detected and fed back by the annular pressure sensor, and meanwhile, the dynamic force and the change rule generated by ultrasonic vibration can be monitored in real time; the part composed of adjusting nut, annular pressure sensor, pre-tightening spring, three-jaw chuck, etc. rotates according to the preset control speed under the drive of the rotating shaft, the power source needed by the rotation is transmitted to the rotating shaft by the motor through the coupling.
Further, the three-axis movement module comprises an X-axis movement mechanism, a Y-axis movement mechanism, a Z-axis movement mechanism, a bottom plate, a vertical plate and a cladding head seat; the Y-axis movement mechanism is arranged on the base, the bottom plate is arranged on the Y-axis movement mechanism, the vertical plate is arranged on the bottom plate, the X-axis movement mechanism is arranged on the vertical plate, the Z-axis movement mechanism is connected with the X-axis movement mechanism, the cladding headstock is arranged on the Z-axis movement mechanism, and the laser coaxial powder feeding cladding head is arranged on the cladding headstock, so that the position of the laser coaxial powder feeding cladding head can be better adjusted.
Compared with the prior art, the invention has the following beneficial effects:
the invention utilizes the external energy field of ultrasonic vibration to improve the structure and the performance of the laser cladding layer on the gear surface, and adopts cooling compressed air to reduce the heat generated by the transducer and the gear test piece, thereby improving the production efficiency of ultrasonic laser cladding processing.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an ultrasonic laser composite surface enhancing device according to the present invention;
FIG. 2 is a schematic structural diagram of a ultrasonic laser composite surface enhancing device according to the present invention;
FIG. 3 is a front view of an ultrasonic laser composite surface enhancing device according to the present invention;
FIG. 4 is a schematic structural diagram of an ultrasonic vibration module of the ultrasonic laser composite surface enhancing device according to the present invention;
fig. 5 is a schematic structural diagram of a rotation driving module of the ultrasonic laser composite surface enhancing device according to the present invention.
In the figure: 1. laser coaxial powder feeding cladding head; 2. an ultrasonic vibration module; 201. a reciprocating assembly; 202. a guide rail; 203. a slider; 204. a housing; 205. a tool head; 206. a primary coil; 207. a secondary coil; 208. a fixed seat; 209. pre-tightening the nut; 210. piezoelectric ceramics; 211. an amplitude transformer; 212. a cover plate; 213. pre-tightening the bolts; 214. a limiting ring; 215. a limit bearing; 216. a fixing ring; 3. a rotation driving module; 301. a motor; 302. a supporting seat; 303. a rotating shaft; 304. a three-jaw chuck; 305. an annular pressure sensor; 306. adjusting the nut; 307. pre-tightening the spring; 4. a three-axis motion module; 401. an X-axis motion mechanism; 402. a Y-axis motion mechanism; 403. a Z-axis motion mechanism; 404. a base plate; 405. a vertical plate; 406. cladding headstock; 5. a base; 6. a gear test piece; 7. an air inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention comprises the following steps:
the first embodiment is as follows:
as shown in fig. 1, an ultrasonic laser composite surface strengthening device includes a laser coaxial powder feeding cladding head 1, an ultrasonic vibration module 2, a rotation driving module 3, a three-axis motion module 4 and a base 5; ultrasonic vibration module 2 and rotation driving module 3 are all fixed to be set up on base 5, and ultrasonic vibration module 2 is relative setting with rotation driving module 3 on base 5, and triaxial movement module 4 sets up on base 5 and rather than swing joint, and the coaxial powder feeding of laser melts and covers head 1 and set up on triaxial movement module 4 and be located ultrasonic vibration module 2's top.
In the ultrasonic laser composite surface strengthening device, the structure and the performance of the laser cladding layer on the gear surface are improved by using the external energy field of ultrasonic vibration, and the heat generated by the transducer is reduced by adopting cooling compressed air, so that the production efficiency of ultrasonic laser cladding processing is improved, and the ultrasonic laser composite surface strengthening device has the characteristics of simple structure, convenience in operation, long service life and the like.
As shown in fig. 2, the ultrasonic vibration module 2 includes a reciprocating assembly 201, a guide rail 202, a slider 203, and an ultrasonic high-frequency vibration generating assembly; the guide rail 202 is fixedly arranged on the base 5, the sliding block 203 is connected to the guide rail 202 in a sliding mode, the ultrasonic high-frequency vibration generating assembly is arranged on the sliding block 203, the reciprocating motion assembly 201 is arranged on the base 5 and connected with the ultrasonic high-frequency vibration generating assembly, the external energy field of ultrasonic vibration is utilized, and the structure and the performance of the gear tooth surface laser cladding layer are effectively improved.
As shown in fig. 2-3, the ultrasonic high-frequency vibration generating assembly includes a housing 204, a wireless energy transmission module, a transducer, and a tool tip 205; the wireless energy transmission module is arranged in the shell 204, the tool head 205 is arranged outside the shell 204 and is positioned between the shell 204 and the rotary driving module 3, and the wireless energy transmission module is connected with the tool head 205 through the transducer, so that the structure and the performance of the gear tooth surface laser cladding layer are effectively improved.
As shown in fig. 4, the wireless energy transmission module includes a primary coil 206, a secondary coil 207, and a fixing base 208; the transducer comprises a pre-tightening nut 209, piezoelectric ceramics 210, a variable amplitude rod 211 and a cover plate 212; the fixing seat 208 is arranged on the shell 204 and is positioned at one end far away from the rotary driving module 3, the primary coil 206 is fixedly arranged on the fixing seat 208, and the secondary coil 207 is fixedly arranged on the amplitude transformer 211; the amplitude transformer 211 penetrates through the shell 204 and is movably connected with the shell, one end of the amplitude transformer 211 is connected with the tool head 205, the other end of the amplitude transformer 211 is sequentially connected with the piezoelectric ceramic 210, the cover plate 212 and the pre-tightening nut 209, the insides of the amplitude transformer 211, the piezoelectric ceramic 210 and the cover plate 212 are communicated and provided with the pre-tightening bolt 213 matched with the pre-tightening nut 209, and the transmission effect is better.
As shown in fig. 4, the joint of the horn 211 and the housing 204 is provided with a limit ring 214, a limit bearing 215 and a fixing ring 216; the fixed ring 216 is arranged outside the shell 204, the limiting bearing 215 and the limiting ring 214 are sequentially arranged inside the shell 204, and the amplitude transformer 211 is movably connected with the limiting ring 214, the limiting bearing 215 and the fixed ring 216, so that the moving range of the amplitude transformer 211 is effectively controlled.
The working principle of the ultrasonic vibration module 2 is as follows: firstly, an external ultrasonic driver is adopted to generate a sinusoidal excitation signal, the sinusoidal excitation signal is wirelessly transmitted to a secondary coil 207 through a primary coil 206, piezoelectric ceramics 210 generates axial high-frequency mechanical vibration after being excited by an electric signal, the vibration is amplified by an amplitude transformer 211 and then transmitted to a tool head 205, the tool head 205 and a gear test piece 6 are always in a pre-stress compaction state, the high-frequency vibration is finally transmitted to the gear test piece 6, so that the gear test piece 6 generates axial vibration, the whole transducer device is driven by a rotary driving module 3 to rotate at a preset control speed under the supporting action of a limiting bearing 215, the tool head 205 and the gear test piece 6 are contacted and separated, and the reciprocating motion component 201 performs reciprocating motion.
As shown in fig. 4, an air inlet pipe 7 communicated with the housing 204 is arranged on the housing 204, and the center parts of the pre-tightening nut 209, the pre-tightening bolt 213, the cover plate 212, the piezoelectric ceramic 210, the amplitude transformer 211 and the tool head 205 are all designed as cavities communicated with the air inlet pipe 7, and after being cooled by an external cooler, the cooled compressed air is output to a cavity of the fixing seat 208 through the air inlet pipe 7 for cooling, so that the cooling effect is good.
As shown in fig. 5, the rotation driving module 3 includes a motor 301, a coupling, a supporting base 302, a supporting bearing, a rotating shaft 303, and a three-jaw chuck 304; the supporting seat 302 is fixedly arranged on the base 5, the supporting bearing is arranged on the supporting seat 302, the rotating shaft 303 penetrates through the supporting bearing and is movably connected with the supporting bearing, the motor 301 is arranged on the supporting seat 302, one end, far away from the ultrasonic vibration module 2, of the rotating shaft 303 is connected with the motor 301, the other end of the rotating shaft 303 is connected with the three-jaw chuck 304, and the gear test piece 6 can be clamped better.
After the cooling compressed air is cooled by the external cooler, the cooled compressed air is output by the air inlet pipe 7 to reach the cavity of the fixed seat 208, and then the cooled compressed air is divided into two paths:
1. the first path forms an air curtain through annular gaps among the cover plate 212, the piezoelectric ceramics 210 and the cavity of the fixing seat 208 to cool the piezoelectric ceramics 210 and the like, then outputs the air curtain through micropores of the magnetic ring seat of the secondary side coil 207, then reaches the cavity of the shell 204, and finally is extruded through gaps such as flow guide holes of the limiting ring 214;
2. the second path is directly conveyed to the inner diameter circular ring space of the gear test piece 6 through the gas outlet channel of the cavity in the middle of the pre-tightening nut 209, the pre-tightening bolt 213, the amplitude transformer 211, the tool head 205 and the like, cools the gear test piece 6 and the three-jaw chuck 304, and then flows out of the circumferential guide groove of the adjusting limiting ring 214 of the three-jaw chuck 304.
As shown in fig. 5, an annular pressure sensor 305 located between the support base 302 and the chuck is disposed on the rotating shaft 303, an adjusting nut 306 adapted to the rotating shaft 303 is disposed on the annular pressure sensor 305, a pre-tightening spring 307 is disposed between the annular pressure sensor 305 and the three-jaw chuck 304, the quantitative control of the pre-tightening force is detected and fed back by the annular pressure sensor 305, and the magnitude and the change rule of the dynamic force generated by the ultrasonic vibration can be monitored in real time.
In this embodiment, the motor 301 and the rotating shaft 303 are connected through a coupling, so that the transmission effect is better.
The principle of the rotary driving module 3 is as follows: the three-jaw chuck 304 can be adapted to a gear test piece 6 with a certain specification range to be clamped and fixed, after the gear test piece 6 is fixed, the tool head 205 is pushed by the reciprocating component 201 to press the gear test piece 6, at the moment, the pre-tightening spring 307 can be compressed, the required pre-tightening force can be adjusted through the adjusting nut 306, quantitative control of the pre-tightening force is detected and fed back by the annular pressure sensor 305, and meanwhile, the dynamic force and the change rule generated by ultrasonic vibration can be monitored in real time; the part composed of the adjusting nut 306, the annular pressure sensor 305, the pre-tightening spring 307, the three-jaw chuck 304 and the like rotates at a preset control speed under the driving of the rotating shaft 303, and a power source required by the rotation is transmitted to the rotating shaft 303 through the coupling by the motor 301.
As shown in fig. 2, the three-axis movement module 4 includes an X-axis movement mechanism 401, a Y-axis movement mechanism 402, a Z-axis movement mechanism 403, a bottom plate 404, a vertical plate 405, and a cladding head seat 406; the Y-axis movement mechanism 402 is arranged on the base 5, the bottom plate 404 is arranged on the Y-axis movement mechanism 402, the vertical plate 405 is arranged on the bottom plate 404, the X-axis movement mechanism 401 is arranged on the vertical plate 405, the Z-axis movement mechanism 403 is connected with the X-axis movement mechanism 401, the cladding headstock 406 is arranged on the Z-axis movement mechanism 403, and the laser coaxial powder feeding cladding head 1 is arranged on the cladding headstock 406, so that the position of the laser coaxial powder feeding cladding head 1 can be better adjusted.
The main workflow of this embodiment is as follows:
1. clamping the gear test piece 6 on the rotating shaft 303, fixing the gear test piece 6 at an initial position, wherein the pre-tightening spring 307 is not compressed;
2. the ultrasonic high-frequency vibration generation module is arranged on the sliding block 203, and moves forwards under the driving of the reciprocating motion assembly 201, the amplitude transformer 211 and the tool head 205 push the gear test piece 6, the gear test piece 6 pushes the compression pre-tightening spring 307, so that pre-tightening force is generated, at the moment, the gear test piece 6 is tightly pressed on the three-jaw chuck 304, and the size of the pre-tightening force can be adjusted through the adjusting nut 306;
3. the laser coaxial powder feeding cladding head 1 is driven by the three-axis motion module 4 to move above the gear test piece 6 and keep dynamic vertical to the tooth surface to be processed;
4. due to the need to press the gear test piece 6, the transducer is subjected to axial force, simultaneously needs to rotate along with the gear test piece 6, is supported by a limit bearing 215, is limited by a limit ring 214, is connected with a fixed ring 216 and is installed on the shell 204;
5. the energy converter, the gear test piece 6, the pre-tightening spring 307 and the adjusting nut 306 rotate together under the driving of the rotating shaft 303, and the rotating power of the rotating shaft 303 is input through connection of a coupler by the motor 301;
6. an external ultrasonic generator generates a high-frequency sinusoidal electric signal, the electric signal is wirelessly transmitted to a secondary coil 207 through a primary coil 206, piezoelectric ceramics 210 in the transducer generates high-frequency vibration under the excitation of the electric signal received by the secondary coil 207, the high-frequency vibration is amplified through an amplitude transformer 211 and transmitted to a gear test piece 6 through a tool head 205, and therefore the gear test piece 6 generates high-frequency vibration;
7. the heat generated by the transducer is quickly taken away after the cold air after heat exchange treatment is pressed into the cavity of the shell 204 by the external air compressor for circulation;
8. finally, the gear test piece 6 and the laser coaxial powder feeding cladding head 1 form a combined motion under the action of high-frequency vibration and rotation, so that the ultrasonic laser composite surface cladding strengthening treatment process is completed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (5)

1. An ultrasonic laser composite surface strengthening device is characterized by comprising a laser coaxial powder feeding cladding head, an ultrasonic vibration module, a rotary driving module, a three-axis movement module and a base; the ultrasonic vibration module and the rotation driving module are both fixedly arranged on the base, the ultrasonic vibration module and the rotation driving module are oppositely arranged on the base, the three-axis motion module is arranged on the base and movably connected with the base, and the laser coaxial powder feeding cladding head is arranged on the three-axis motion module and is positioned above the ultrasonic vibration module; the rotary driving module is provided with a three-jaw chuck; the gear test piece is positioned between the ultrasonic vibration module and the rotary driving module and is placed on the three-jaw chuck;
the ultrasonic vibration module comprises a reciprocating motion assembly, a guide rail, a sliding block and an ultrasonic high-frequency vibration generation assembly; the guide rail is fixedly arranged on the base, the sliding block is connected to the guide rail in a sliding mode, the ultrasonic high-frequency vibration generating assembly is arranged on the sliding block, and the reciprocating motion assembly is arranged on the base and connected with the ultrasonic high-frequency vibration generating assembly;
the ultrasonic high-frequency vibration generating assembly comprises a shell, a wireless energy transmission module, a transducer and a tool head; the wireless energy transmission module is arranged inside the shell, the tool head is arranged outside the shell and positioned between the shell and the rotary driving module, and the wireless energy transmission module is connected with the tool head through the transducer;
the wireless energy transmission module comprises a primary coil, a secondary coil and a fixed seat; the transducer comprises a pretightening nut, piezoelectric ceramics, a variable amplitude rod and a cover plate; the fixed seat is arranged on the shell and is positioned at one end far away from the rotary driving module, the primary coil is fixedly arranged on the fixed seat, and the secondary coil is fixedly arranged on the amplitude transformer; the amplitude transformer penetrates through the shell and is movably connected with the shell, one end of the amplitude transformer is connected with the tool head, the other end of the amplitude transformer is sequentially connected with the piezoelectric ceramic, the cover plate and the pre-tightening nut, and the amplitude transformer, the piezoelectric ceramic and the cover plate are communicated with each other and are provided with pre-tightening bolts matched with the pre-tightening nuts;
a limiting ring, a limiting bearing and a fixing ring are arranged at the joint of the amplitude transformer and the shell; the fixed ring is arranged outside the shell, the limiting bearing and the limiting ring are sequentially arranged inside the shell, and the amplitude transformer is movably connected with the limiting ring, the limiting bearing and the fixed ring;
an air inlet pipe communicated with the shell is arranged on the shell, and the middles of the pre-tightening nut, the pre-tightening bolt, the cover plate, the piezoelectric ceramic, the amplitude transformer and the tool head are all designed into cavities communicated with the air inlet pipe;
after the cooling compressed air is cooled by an external cooler, the cooling compressed air is output to a cavity of the fixed seat by an air inlet pipe and is divided into two paths for cooling:
the first path forms an air curtain through an annular gap between the cover plate, the piezoelectric ceramics and the cavity of the fixed seat to cool the piezoelectric ceramics, then the air curtain is output by the micropores of the magnetic ring seat of the secondary side coil, then the air curtain reaches the cavity of the shell, and finally the air curtain is extruded out by the gap of the flow guide hole of the limiting ring;
and the second path is directly conveyed to the inner diameter circular ring space of the gear test piece through a pre-tightening nut, a pre-tightening bolt, an amplitude transformer and an air outlet channel of a cavity in the middle of the tool head, cools the gear test piece and the three-jaw chuck, and then flows out from a circumferential guide groove of an adjusting limiting ring of the three-jaw chuck.
2. The ultrasonic laser composite surface strengthening device of claim 1, wherein the rotation driving module comprises a motor, a coupler, a supporting seat, a supporting bearing and a rotating shaft; the supporting seat is fixedly arranged on the base, the supporting bearing is arranged on the supporting seat, the rotating shaft penetrates through the supporting bearing and is movably connected with the supporting bearing, the motor is arranged on the supporting seat, one end of the ultrasonic vibration module is far away from the rotating shaft and is connected with the motor, and the other end of the rotating shaft is connected with the three-jaw chuck.
3. The ultrasonic laser composite surface strengthening device as claimed in claim 2, wherein an annular pressure sensor is disposed on the rotating shaft and located between the supporting base and the chuck, an adjusting nut adapted to the rotating shaft is disposed on the annular pressure sensor, and a pre-tightening spring is disposed between the annular pressure sensor and the three-jaw chuck.
4. The ultrasonic-laser composite surface enhancement device as claimed in claim 2, wherein the motor is connected with the rotating shaft through a coupling.
5. The ultrasonic laser composite surface strengthening device of any one of claims 1 to 4, wherein the three-axis motion module comprises an X-axis motion mechanism, a Y-axis motion mechanism, a Z-axis motion mechanism, a bottom plate, a vertical plate and a cladding headstock; the Y-axis movement mechanism is arranged on the base, the bottom plate is arranged on the Y-axis movement mechanism, the vertical plate is arranged on the bottom plate, the X-axis movement mechanism is arranged on the vertical plate, the Z-axis movement mechanism is connected with the X-axis movement mechanism, the cladding headstock is arranged on the Z-axis movement mechanism, and the laser coaxial powder feeding cladding head is arranged on the cladding headstock.
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CN114214621A (en) * 2021-12-28 2022-03-22 浙江工业大学 Ultrasonic vibration composite wire feeding device and method for laser wire feeding cladding forming

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN106917086A (en) * 2017-05-10 2017-07-04 江苏理工学院 Method and device for ultrasonic vibration assisted laser cladding
CN110218999A (en) * 2019-07-02 2019-09-10 辽宁科技大学 A kind of ultrasonic vibration multidimensional influences laser cladding equipment and method
CN111850541A (en) * 2020-06-17 2020-10-30 江苏大学 Device and method for ultrahigh-speed laser cladding additive manufacturing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106917086A (en) * 2017-05-10 2017-07-04 江苏理工学院 Method and device for ultrasonic vibration assisted laser cladding
CN110218999A (en) * 2019-07-02 2019-09-10 辽宁科技大学 A kind of ultrasonic vibration multidimensional influences laser cladding equipment and method
CN111850541A (en) * 2020-06-17 2020-10-30 江苏大学 Device and method for ultrahigh-speed laser cladding additive manufacturing

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