CN106363173B - A kind of device and its implementation of the increasing material manufacturing of ultrasonic wave auxiliary laser - Google Patents

A kind of device and its implementation of the increasing material manufacturing of ultrasonic wave auxiliary laser Download PDF

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Publication number
CN106363173B
CN106363173B CN201611136629.4A CN201611136629A CN106363173B CN 106363173 B CN106363173 B CN 106363173B CN 201611136629 A CN201611136629 A CN 201611136629A CN 106363173 B CN106363173 B CN 106363173B
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China
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ultrasonic
mold
material manufacturing
machine table
substrate
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CN201611136629.4A
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Chinese (zh)
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CN106363173A (en
Inventor
徐庆东
乐国敏
夏胜全
刘学
李晋锋
魏怡芸
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中国工程物理研究院材料研究所
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Process efficiency
    • Y02P10/25Process efficiency by increasing the energy efficiency of the process
    • Y02P10/29Additive manufacturing
    • Y02P10/295Additive manufacturing of metals

Abstract

The invention discloses a kind of devices of ultrasonic wave auxiliary laser increasing material manufacturing, including the accurate double-spindle numerical control turntable being mainly made of dual-gripper turntable and machine table, the support fastening base being arranged in machine table, the reeded mold of band being placed on support fastening base, the ultrasonic unit for setting and being connected with mold bottom through the machine table and support fastening base, the substrate and the powder-feeding nozzle positioned at surface being placed in the groove on the mold.The present invention also provides its implementation.The present invention is transferred to substrate using ultrasonic activation, it is allowed to generate resonance, so as to which the bath formed under the laser action of laser gain material manufacturing process carries out ultrasonic vibration stirring, generate cavitation effect and mechanical effect, improve bonding state between layers, it reduces the formation probability of drip molding internal porosity and microsegregation, while crystal grain thinning and reduces residual stress, obtain the drip molding of good mechanical performance.

Description

A kind of device and its implementation of the increasing material manufacturing of ultrasonic wave auxiliary laser

Technical field

The invention belongs to laser gain material manufacturing fields, are to be related to a kind of ultrasonic wave auxiliary laser increasing material manufacturing specifically Device, bath quality is manufactured improving laser gain material by additional ultrasonic wave and reduces its internal stress.

Background technology

Laser gain material manufacturing technology(One kind in 3D printing technique)As the current materials processing skill such as casting forging and stamping welding The important supplement of art plays an important role in terms of the Quick-forming of labyrinth high-performance metal part and reparation.Nearly 20 years To become one of international material process engineering and advanced manufacturing technology field forward position research hotspot direction.Research is learned both at home and abroad at present Person is for equipment, technique, the tissue of the laser gain material manufacture of the metal materials such as titanium alloy, high temperature alloy, steel alloy, refractory alloy Carry out substantial amounts of research work with performance, realize the actual installation application of titanium alloy etc materials.

However, during laser gain material manufacture shaping, fusing, solidification and the cooling of material are all under the conditions of faster It carries out, bath has complicated physical chemistry and metallurgical reaction, this causes Forming Workpiece is susceptible to stomata and is mingled with to melt Close the mass defects such as bad and macroscopic deformation cracking and micro-crack.Further, since local heating caused by manufacturing process and should Power, which is unevenly distributed, causes final tissue there are heavier microsegregation and special interfacial structure, to the mechanical property of drip molding It can also generate certain influence.

It can be seen that in order to really effectively apply laser gain material manufacturing technology and metal processing sectors, urgently need New effective assist formation method is found in forming process, laser forming metalwork metallurgical imperfection, crystalline substance are reduced with this The problems such as grain is coarse, and then improve its mechanical property.

The content of the invention

To overcome the above problem of the prior art, the present invention provides a kind of dress of ultrasonic wave auxiliary laser increasing material manufacturing The defects of putting, reducing the stomata inside laser gain material manufacture drip molding, microsegregation, crack, while can be obtained with crystal grain thinning The drip molding of good mechanical performance.

To achieve these goals, the technical solution adopted by the present invention is as follows:

A kind of device of ultrasonic wave auxiliary laser increasing material manufacturing, including the essence being mainly made of dual-gripper turntable and machine table Close double-spindle numerical control turntable, the support fastening base being arranged in machine table, the band being placed on support fastening base are reeded Mold, the ultrasonic unit for setting and being connected with mold bottom through the machine table and support fastening base, is placed in described The substrate in groove on mold and the powder-feeding nozzle positioned at surface;

Wherein, the ultrasonic unit includes sequentially connected ultrasonic transmitter, ultrasonic transducer, ultrasonic variable amplitude Bar and ultrasonic activation bar, the ultrasonic variable amplitude bar are fixed in the machine table, and the ultrasonic activation bar is described in Support fastening base is simultaneously connected with the die bottom plate, and the ultrasonic transducer becomes through the machine table and the ultrasonic wave Width bar connects, and the ultrasonic transmitter is connected by cable with ultrasonic transducer.

Specifically, the substrate and the groove match on the mold.

Further, it is additionally provided with to limit the briquetting of substrate on the mold.

Preferably, the mold is common die, water-cooled copper mold or aluminum heat mold.

More specifically, the water-cooled copper mold is included with reeded copper mold, the processing series of holes being arranged inside copper mold, It is connected with the water pipe that connect of processing series of holes and with water pipe and with water pipe and processing the water that series of holes collectively forms Water-cooling circulating Cold.

More specifically, the aluminum heating mold is included with reeded aluminum dipping form, the pipe being embedded in deviously inside aluminum dipping form Shape heating element and the temperature controller being connected with tubular electrothermal element.

Wherein, it is 150~500 DEG C that the temperature controller, which controls the temperature range of tubular electrothermal element,.

Based on above-mentioned construction, the present invention also provides the implementation method of the device of the ultrasonic wave auxiliary laser increasing material manufacturing, Include the following steps:

(1)Assembling:Accurate double-spindle numerical control turntable is set to make machine table held stationary, by ultrasonic unit and support fastening dress It puts and is fixed in machine table, mold and it is tight with the ultrasonic activation bar in ultrasonic unit is disposed on support clamp device It is solidly connected, matching substrate is disposed in the groove of mold, and is fixed it using briquetting;

(2)Start ultrasonic unit, the ultrasonic wave of generation is made to be directly inputted in substrate, adjust ultrasonic unit and be allowed to produce Raw ultrasonic frequency and the intrinsic frequency of the substrate approach, and substrate is made to generate resonance under ul-trasonic irradiation;

(3)Powder-feeding nozzle is moved to the certain position of surface, laser gain material manufacturing equipment is opened, in numerical control state The lower manufacture for completing product;

(4)After the completion of product manufacturing, ultrasonic unit is closed.

Further, different set of the mold is also configured with corresponding cooked mode:

When the mold is water-cooled copper mold, cooked mode is precooling pattern, in step(1)Middle placement water cooled copper mould Tool, and be allowed to be fastenedly connected with ultrasonic activation bar;In step(2)Before starting ultrasonic unit, water cooling unit is first opened, is set pre- Cold temperature restarts ultrasonic unit after Water-cooling circulating stabilization;

When the mold heats mold for aluminum, cooked mode is preheating mode, in step(1)Middle placement aluminum heating Mold, and be allowed to be fastenedly connected with ultrasonic activation bar;In step(2)Before starting ultrasonic unit, temperature controller setting is first passed through Preheating temperature, and restart ultrasonic unit after mold temperature stabilization.

Compared with prior art, the invention has the advantages that:

(1)The present invention is transferred to substrate using ultrasonic activation, is allowed to generate resonance, so as in laser gain material manufacturing process Laser action under the bath that is formed carry out ultrasonic vibration stirring, generate cavitation effect and mechanical effect, improve layer and layer Between bonding state, reduce the formation probability of drip molding internal porosity and microsegregation, while crystal grain thinning and reduce remnants Stress obtains the drip molding of good mechanical performance, and the present invention is ingenious in design, simple in structure, practical and convenient, has extensive Application prospect is suitble to promote and apply.

(2)The present invention proposes the progress ultrasonic wave auxiliary laser increasing material manufacturing on accurate double-spindle numerical control turntable, utilizes the essence The rotation and inclination of close double-spindle numerical control turntable can carry out ultrasonic wave auxiliary laser to increasingly complex Forming Workpiece and increase material system It makes.

(3)The present invention provides common, preheating and three kinds of molds of precooling, and based on this three kinds of cooked mode of composition, thus Cooling velocity in forming process is controlled, enriches the research means of bath quality control, while is also amorphous The laser gain material manufacture of the materials such as material, directional solidification provides new way.

Description of the drawings

Fig. 1 is the structural diagram of the present invention.

Fig. 2 is the structure diagram of water-cooled copper mold in the present invention.

Fig. 3 is the structure diagram that aluminum heats mold in the present invention.

Specific embodiment

The invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include but not limited to The following example.

Embodiment

As shown in Figure 1 to Figure 3, the device of the ultrasonic wave auxiliary laser increasing material manufacturing, including mainly by 2 He of dual-gripper turntable The accurate double-spindle numerical control turntable that machine table 3 is formed, the support fastening base 7 being arranged in machine table are placed in support fastening base The reeded mold 8 of band on seat, the ultrasound for setting and being connected with mold bottom through the machine table and support fastening base Wave apparatus, the substrate 9 being placed in the groove on the mold and the powder-feeding nozzle 11 positioned at surface;

Wherein, the ultrasonic unit includes sequentially connected ultrasonic transmitter 1, ultrasonic transducer 4, ultrasonic wave change Width bar 5 and ultrasonic activation bar 6, the ultrasonic variable amplitude bar are fixed on by outer shroud ring flange in the machine table, described super Acoustic vibration bar is connected through the support fastening base and with the die bottom plate, and the ultrasonic transducer adds through described Work platform is connected with the ultrasonic variable amplitude bar, and the ultrasonic transmitter is connected by cable with ultrasonic transducer.

Specifically, the substrate and the groove match on the mold.Further, it is additionally provided with and is used on the mold Limit the briquetting of substrate.

Preferably, the mold is common die, water-cooled copper mold or aluminum heat mold.

More specifically, the water-cooled copper mold includes, with reeded copper mold 14, being arranged at the processing series connection inside copper mold Hole is connected with the water pipe 13 of processing series of holes connection and with water pipe and collectively forms Water-cooling circulating with water pipe and processing series of holes Water cooling unit 12.

More specifically, the aluminum heating mold is included with reeded aluminum dipping form 16, it is embedded in deviously inside aluminum dipping form Tubular electrothermal element 17 and the temperature controller 15 being connected with tubular electrothermal element.Wherein, the temperature controller control tubulose electric heating member The temperature range of part is 150~500 DEG C.

Based on above-mentioned construction, the present invention also provides the implementation method of the device of the ultrasonic wave auxiliary laser increasing material manufacturing, Include the following steps:

(1)Assembling:Accurate double-spindle numerical control turntable is set to make machine table held stationary, by ultrasonic unit and support fastening dress It puts and is fixed in machine table, mold and it is tight with the ultrasonic activation bar in ultrasonic unit is disposed on support clamp device It is solidly connected, matching substrate is disposed in the groove of mold, and is fixed it using briquetting;

(2)Start ultrasonic unit, the ultrasonic wave of generation is made to be directly inputted in substrate, adjust ultrasonic unit and be allowed to produce Raw ultrasonic frequency and the intrinsic frequency of the substrate approach, and substrate is made to generate resonance under ul-trasonic irradiation, find it The resonance point of resonance can generate high-frequency vibration in bath and be stirred;

(3)Powder-feeding nozzle is moved to the certain position of surface, laser gain material manufacturing equipment is opened, in numerical control state The lower manufacture for completing product 10;

(4)After the completion of product manufacturing, ultrasonic unit is closed.

Further, different set of the mold is also configured with corresponding cooked mode:

When the mold is water-cooled copper mold, cooked mode is precooling pattern, in step(1)Middle placement water cooled copper mould Tool, and be allowed to be fastenedly connected with ultrasonic activation bar;In step(2)Before starting ultrasonic unit, water cooling unit is first opened, is set pre- Cold temperature restarts ultrasonic unit after Water-cooling circulating stabilization;

When the mold heats mold for aluminum, cooked mode is preheating mode, in step(1)Middle placement aluminum heating Mold, and be allowed to be fastenedly connected with ultrasonic activation bar;In step(2)Before starting ultrasonic unit, temperature controller setting is first passed through Preheating temperature, and restart ultrasonic unit after mold temperature stabilization.

Above-described embodiment is merely a preferred embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, as long as using The design principle of the present invention and the variation for carrying out non-creative work on this basis and making, should all belong to the present invention's Within protection domain.

Claims (7)

1. a kind of device of ultrasonic wave auxiliary laser increasing material manufacturing, which is characterized in that including mainly by dual-gripper turntable and processing The accurate double-spindle numerical control turntable that platform is formed, the support fastening base being arranged in machine table are placed on support fastening base With reeded mold, the ultrasonic unit for setting and being connected with mold bottom through the machine table and support fastening base, The substrate and the powder-feeding nozzle positioned at surface being placed in the groove on the mold;The substrate and the mold On groove match, be additionally provided with to limit the briquetting of substrate on the mold;
Wherein, the ultrasonic unit include sequentially connected ultrasonic transmitter, ultrasonic transducer, ultrasonic variable amplitude bar and Ultrasonic activation bar, the ultrasonic variable amplitude bar are fixed in the machine table, and the ultrasonic activation bar passes through the support Fastening base is simultaneously connected with the die bottom plate, and the ultrasonic transducer passes through the machine table and the ultrasonic variable amplitude bar Connection, the ultrasonic transmitter are connected by cable with ultrasonic transducer.
A kind of 2. device of ultrasonic wave auxiliary laser increasing material manufacturing according to claim 1, which is characterized in that the mold Mold is heated for water-cooled copper mold or aluminum.
A kind of 3. device of ultrasonic wave auxiliary laser increasing material manufacturing according to claim 2, which is characterized in that the water cooling Copper mould is included with reeded copper mold, the processing series of holes being arranged inside copper mold, the water pipe connected with processing series of holes, with And it is connected with water pipe and the water cooling unit of Water-cooling circulating is collectively formed with water pipe and processing series of holes.
A kind of 4. device of ultrasonic wave auxiliary laser increasing material manufacturing according to claim 2, which is characterized in that the aluminum Heat mold include with reeded aluminum dipping form, the tubular electrothermal element being embedded in deviously inside aluminum dipping form and with tubulose electric heating The temperature controller of element connection.
A kind of 5. device of ultrasonic wave auxiliary laser increasing material manufacturing according to claim 4, which is characterized in that the temperature control It is 150~500 DEG C that device, which controls the temperature range of tubular electrothermal element,.
6. the implementation method of the device such as Claims 1 to 5 any one of them ultrasonic wave auxiliary laser increasing material manufacturing, feature It is, includes the following steps:
(1) assemble:Accurate double-spindle numerical control turntable is set to make machine table held stationary, ultrasonic unit and support clamp device are consolidated It is scheduled in machine table, mold is disposed on support clamp device and it and the ultrasonic activation bar in ultrasonic unit is fastened into company It connects, matching substrate is disposed in the groove of mold, and is fixed it using briquetting;
(2) start ultrasonic unit, the ultrasonic wave of generation is made to be directly inputted in substrate, adjust ultrasonic unit and be allowed to what is generated Ultrasonic frequency and the intrinsic frequency of the substrate approach, and substrate is made to generate resonance under ul-trasonic irradiation;
(3) powder-feeding nozzle is moved to the certain position of surface, opens laser gain material manufacturing equipment, it is complete under numerical control state Into the manufacture of product;
(4) after the completion of product manufacturing, ultrasonic unit is closed.
7. the implementation method of the device of ultrasonic wave auxiliary laser increasing material manufacturing according to claim 6, which is characterized in that institute Different set for stating mold is also configured with corresponding cooked mode:
When the mold is water-cooled copper mold, cooked mode is precooling pattern, the placement water-cooled copper mold in step (1), and It is allowed to be fastenedly connected with ultrasonic activation bar;Before step (2) starts ultrasonic unit, water cooling unit is first opened, precooling temperature is set Degree restarts ultrasonic unit after Water-cooling circulating stabilization;
When the mold heats mold for aluminum, cooked mode is preheating mode, the placement aluminum heated mould in step (1) Tool, and be allowed to be fastenedly connected with ultrasonic activation bar;Before step (2) starts ultrasonic unit, first pass through temperature controller and set in advance Hot temperature, and restart ultrasonic unit after mold temperature stabilization.
CN201611136629.4A 2016-12-12 2016-12-12 A kind of device and its implementation of the increasing material manufacturing of ultrasonic wave auxiliary laser CN106363173B (en)

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CN106695125A (en) * 2017-02-20 2017-05-24 上海海事大学 System and method for improving laser processing surface integrity of workpiece on line
CN107042628A (en) * 2017-04-26 2017-08-15 广东工业大学 A kind of FDM type 3D printing platforms of ultrasonic wave added vibration
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CN107552798A (en) * 2017-08-31 2018-01-09 孙振淋 A kind of method for improving 3D printing or electric arc increasing material formation of parts intensity
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CN107812942A (en) * 2017-11-01 2018-03-20 西北工业大学 A kind of double ultrasonic wave added laser gain material manufacture devices and method
CN108176857A (en) * 2018-03-05 2018-06-19 广东工业大学 A kind of metal 3D printing composite manufacturing method and its device
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