| Publication number | CN104694922 A |
| Publication type | Application |
| Application number | CN 201510142568 |
| Publication date | Jun 10, 2015 |
| Filing date | Mar 30, 2015 |
| Priority date | Mar 30, 2015 |
| Publication number | 201510142568.1, CN 104694922 A, CN 104694922A, CN 201510142568, CN-A-104694922, CN104694922 A, CN104694922A, CN201510142568, CN201510142568.1 |
| Inventors | 宋立军, 张屹, 胡仲勋, 肖先锋 |
| Applicant | 湖南大学 |
| Export Citation | BiBTeX, EndNote, RefMan |
| Patent Citations (3), Classifications (1), Legal Events (3) | |
| External Links: SIPO, Espacenet | |
技术领域 TECHNICAL FIELD
[0001] 本发明涉及激光加工技术领域，尤其涉及一种环孔式激光同轴送粉喷嘴。 [0001] The present invention relates to the field of laser processing technology, particularly to a loop-hole laser coaxial powder feeding nozzle.
背景技术 Background technique
[0002] 激光熔覆成形(也称激光近形制造)是以激光作为加工热源，以金属粉末为原材料，利用“离散+堆积”的增材成形思想，在金属基板上逐层熔覆堆积，从而形成金属零件的制造技术。 [0002] Laser Cladding Forming (also called laser near-shaped, Ltd.) as a process heat source is a laser, metal powder as raw material, the use of "discrete + accumulation" of material formed by thought, cladding layer by layer on the metal substrate accumulation, thereby forming metal parts manufacturing technology. 应用该技术可直接制造出具有复杂形状和良好机械性能的全致密金属零件，也可对具有复杂形状、一定深度制造缺陷、误加工或服役损伤零件的修复和再制造。 This technology can be used directly to produce fully dense metal parts with complex shapes and good mechanical properties, but also on a complex shape, a certain depth of a manufacturing defect, error processing or service Damage repair and remanufacturing of parts.
[0003] 激光熔覆成形系统主要包括大功率激光器、导光及聚焦光路系统、数控装置、金属粉末输送装置、检测与控制装置等。 [0003] The laser cladding forming system includes a high power laser, a light guide and focusing optical system, CNC equipment, metal powder delivery device, measurement and control devices. 其中金属粉末输送是一项关键技术，它直接影响着金属沉积的质量和效率。 Wherein the metal powder delivery is a key technology, which directly affects the quality and efficiency of metal deposition. 常用的激光熔覆成形同步送粉方式主要有侧向送粉和同轴送粉。 Commonly used powder feeding laser cladding forming synchronization methods are mainly lateral powder feed and coaxial powder. 但侧向送粉无法克服因激光束和粉末流场的不对称而带来对扫描方向限制的缺点，从而限制了其在激光熔覆成形上的应用。 But was unable to overcome the lateral powder feed laser beam and asymmetric flow field of powder brought restrictions on the scanning direction shortcomings, thus limiting its application in laser cladding forming.
[0004]同轴送粉粉末流能够和激光同轴耦合输出，有效地克服了侧向送粉的缺点。 [0004] Coaxial another on Moliu and laser coaxial output coupling can effectively overcome the shortcomings of the lateral feed powder. 目前，激光熔覆成形所采用的同轴送粉喷嘴主要有两种形式:四管式同轴送粉喷嘴和锥环式同轴送粉喷嘴。 Currently, coaxial powder feeding nozzle used in laser cladding forming There are two main forms: four tubular coaxial powder nozzle and cone ring coaxial powder feeding nozzle. 美国Sandia国家实验室用于激光近净成形技术的同轴喷嘴采用的是四管式同轴送粉喷嘴(美国专利USPat.6046426)，由于粉末出口离基板距离较远，不易出现堵塞粉末通道和喷嘴过热现象，且四路粉路管相对独立，能够实现三维激光直接制造和再制造；但是，该同轴送粉喷嘴存在粉末汇聚性不高(利用率低)，从而影响沉积效率和质量。 Sandia National Laboratories in the United States coaxial nozzle for laser near net shape technology uses a four-tube coaxial powder feeding nozzle (U.S. Patent USPat.6046426), due to the distance from the substrate powder exports far less prone to clogging and powder channel nozzle overheating and pink four-way pipe is relatively independent, able to achieve three-dimensional laser direct manufacturing and remanufacturing; however, the presence of the coaxial powder nozzle powder aggregation is not high (utilization rate), thus affecting the deposition efficiency and quality. 德国Fraunhofer研宄所采用环隙式同轴送粉喷嘴(美国专利USPat.6316744)通过优化粉末通道结构，大大的提高了粉末的利用率；但其结构过于复杂，且当激光头倾斜，尤其是大角度倾斜时，粉末在重力作用下会出现偏聚，导致喷嘴出口粉末流均匀性相对较差，使用范围具有很大的局限性。 German Fraunhofer Institute traitor employed annulus coaxial powder feeding nozzle (U.S. Patent USPat.6316744) by optimizing the powder channel structure, greatly improve the utilization of powder; but its structure is too complex, and when the laser head tilt, especially large angle to the powder under gravity segregation occurs, leading to the nozzle outlet powder flow relatively poor uniformity, using a range of significant limitations. 华南理工大学研制的孔式同轴送粉喷嘴(CN 27077773Y),清华大学采用垂直装卸的分体式激光熔覆同轴送粉喷嘴(CN 1255411A),此类送粉喷嘴都存在上述类似的问题。 South China University of coaxial hole developed powder nozzle (CN 27077773Y), Tsinghua University, using split coaxial laser cladding powder feeding nozzle vertical handling (CN 1255411A), such powder feeding nozzle are similar problems as described above. 现有的同轴送粉喷嘴无法同时满足粉末高汇聚性和激光三维应用。 Existing coaxial powder feeding nozzle failed to meet the high aggregation powder and three-dimensional laser applications.
发明内容 SUMMARY OF THE INVENTION
[0005] 本发明要解决的技术问题是克服现有技术的不足，提供一种结构简单、粉末流汇聚性高、在喷嘴一定倾斜时仍能获得均匀的粉末流、激光熔覆效率高的环孔式激光同轴送粉喷嘴。 [0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a simple, convergent powder flow is high, can still obtain a uniform powder flow in the nozzle at a slant, high efficiency laser cladding ring Hole laser coaxial powder feeding nozzle.
[0006] 为解决上述技术问题，本发明采用以下技术方案: [0006] In order to solve the above technical problem, the present invention employs the following technical scheme:
一种环孔式激光同轴送粉喷嘴，包括中空的锥状喷嘴主体，所述锥状喷嘴主体的大径端设有可与激光头连接的连接套筒，所述锥状喷嘴主体上设有四个周向均匀布置的进粉通道，所述进粉通道的入口设于锥状喷嘴主体的大径端，所述进粉通道的出口设于锥状喷嘴主体的小径端，所述锥状喷嘴主体的小径端设有一中空的环孔锥头，所述环孔锥头大径端的端面上设有环形粉末稳流槽，所述环形粉末稳流槽与所述进粉通道连通，所述环孔锥头小径端的端面上设有多个周向均匀分布的出粉小孔，所述出粉小孔与环形粉末稳流槽连通，各所述出粉小孔的粉末流汇集于一点。 An annular ring laser coaxial powder feeding nozzle includes hollow cone nozzle body, said nozzle body large-diameter tapered end with the coupling sleeve can be connected to the laser head, the upper cone nozzle body located directed into the powder passage arranged uniformly, the powder feed passage provided in the inlet cone nozzle body large-diameter end of the four weeks, the powder feed outlet passage provided in the small diameter end of the tapered nozzle body, the cone Trail ends shaped nozzle body is provided with a hollow ring hole cone, the end face of the ring hole large-diameter end of the cone with an annular groove powder steady flow, the annular groove and the steady flow of powder into the powder passage, the end face of said ring bore diameter end of the cone head provided with a plurality of circumferentially flour evenly distributed pores, the pores of the powder powder steady flow communication with the annular grooves, each of said apertures flour powder flow together in the point .
[0007] 作为上述技术方案的进一步改进: [0007] As the above-mentioned aspect of further improvements:
所述锥状喷嘴主体的内孔内设有中央水冷套，所述中央水冷套外表面设有多个相互连通的环形凹槽，所述锥状喷嘴主体上分别设有冷却水进口和冷却水出口，所述冷却水进口和冷却水出口均与所述环形凹槽连通。 The tapered inner bore of the nozzle body with a central water jacket, the outer surface of the central water cooling jacket is provided a plurality of interconnected annular groove on the nozzle body are provided with tapered cooling water inlet and cooling water outlet, the cooling water inlet and the cooling water outlet are in communication with the annular groove.
[0008] 所述中央水冷套外表面与所述锥状喷嘴主体的内孔的侧壁之间设有密封圈。 [0008] The sealing ring is provided between the outer surface of the side wall of the tapered bore of the nozzle body central water jacket.
[0009] 所述锥状喷嘴主体上还设有四个周向均匀布置的保护气体通道，所述保护气体通道与所述进粉通道交错布置，所述保护气体通道与所述锥状喷嘴主体的内孔连通。 [0009] the upper cone nozzle body also has four circumferentially uniform arrangement of shielding gas passage, said shielding gas passage with the intake passage are staggered powder, said shielding gas passage with the tapered nozzle body The bore communicates.
[0010] 所述出粉小孔的中心线与所述锥状喷嘴主体轴线的夹角为α，10° < α <30°。 [0010] The flour aperture angle of the cone and the center line of the nozzle body axis is α, 10 ° <α <30 °. 所述出粉小孔的直径为D，数量为N个，0.8mm彡D彡1.5mm，10彡N彡30。 The flour aperture diameter D, the amount of the N, 0.8mm San D San 1.5mm, 10 N San San 30.
[0011] 所述环孔锥头通过连接螺栓与锥状喷嘴主体的小径端可拆卸的连接。 [0011] The loop hole cone bolts through the nozzle body and the tapered end of the detachable connection of trails.
[0012] 所述环形粉末稳流槽的宽度与所述进粉通道的直径相等，所述环形粉末稳流槽的深度大于出粉小孔孔深的二分之一。 [0012] the annular powder steady flow groove width of the intake passage powder equal to the diameter, the depth of the annular groove is greater than the steady flow of powder out of one-half deep powder keyhole.
[0013] 所述连接套筒通过调节螺栓与所述锥状喷嘴主体连接。 [0013] The connecting sleeve is connected to the nozzle body via a tapered adjustment screw.
[0014] 所述锥状喷嘴主体大径端的端面上设有一环形安装槽，所述连接套筒外表面套设有一调节套筒，所述调节套筒与所述环形安装槽螺纹连接，所述调节套筒伸出所述环形安装槽的外表面上设有四个均匀分布的对中螺钉。 [0014] The end surface of the large diameter end of a tapered nozzle main body is provided with an annular mounting groove, the outer surface of the sleeve connecting sleeve provided with an adjusting sleeve, the adjusting sleeve and the annular mounting groove threaded connection, the said adjustment sleeve projecting annular mounting groove provided on the outer surface of the screw four evenly distributed.
[0015] 与现有技术相比，本发明的优点在于: [0015] Compared with the prior art, the advantages of the present invention is:
(I)本发明的环孔式激光同轴送粉喷嘴，连接套筒、锥状喷嘴主体和环孔锥头的内孔形成激光束通道，各出粉小孔的粉末流可与激光束汇集于一点，粉末经由进粉通道，到达环形粉末稳流槽，粉末在环形粉末稳流槽内聚集后，再通过多个出粉小孔喷出，激光束穿过激光束通道与出粉小孔喷出的粉末流汇聚成一点，对加工件进行加工、熔覆、修复和再制造等，本发明的送粉喷嘴，采用具有聚集作用的环形粉末稳流槽，送粉喷嘴在大角度倾斜情况下，能够获得均匀、小聚焦粉斑、高挺度的粉末流，保证金属沉积过程中金属粉末与聚焦激光的充分作用，提高沉积效率和精度，有效地克服了送粉喷嘴在大倾角加工时由于重力作用而出现的粉末偏聚现象，确保粉末聚焦的均匀性，提高了加工效率。 (I) loop-hole laser coaxial powder feeding nozzle of the present invention, the connection bore sleeve, tapered nozzle body and ring hole cone forming laser beam path, each flour powder flow orifice with a laser beam collection at one point, the powder into the powder passage through to reach the annular groove steady flow of powder, the powder in the powder steady flow annular groove gather, and then discharged through the plurality of apertures flour, the laser beam passes through the laser beam path and a powder spray orifices out of the powder flow converging point of the workpiece processing, cladding, repair and remanufacturing, powder feeding nozzle of the present invention, the use of an annular groove having a steady flow of powder aggregation of the powder feeding nozzle tilt angle in the case of large can be obtained even small pink spots focused, high stiffness of powder flow, ensure adequate action metal deposition of metal powder and a focused laser to improve deposition efficiency and accuracy, effectively overcome the powder feeding nozzle during processing due to the large angle Powder gravity segregation phenomenon occurs, to ensure uniformity of the powder focus, improve the processing efficiency.
[0016] (2)本发明的环孔式激光同轴送粉喷嘴，采用模块化设计，具有不同α角规格的环孔锥头通过螺栓与喷嘴主体连接，使得不同规格环孔锥头端面与基板间的距离能够在一定范围内变化，从而获得不同大小的粉末汇聚焦斑。 [0016] (2) ring laser hole coaxial powder feeding nozzle of the present invention, a modular design, the ring hole cone angle α having different sizes bolted the nozzle body, so that different specifications cone face and the ring bore the distance between the substrates can be within a certain range, so as to obtain a different focal spot size of the powder aggregation.
[0017] (3)本发明的环孔式激光同轴送粉喷嘴，连接套筒通过调节螺栓与锥状喷嘴主体连接，通过调节调节螺栓的长短可以调节粉末流焦点与激光束焦点间的离焦距离，同时可调节至两者重合。 [0017] (3) ring laser hole coaxial powder feeding nozzle of the present invention, by adjusting the bolts connecting sleeve is connected with the tapered nozzle body, by adjusting the length adjustment bolt can be adjusted from the powder flow focus the laser beam focus among focal distance, at the same time can be adjusted to coincide with the two.
[0018] (4)本发明的环孔式激光同轴送粉喷嘴，调节对中螺钉可调节连接套筒和激光头的位移，克服加工和安装过程中的同轴度的误差，实现激光束与粉末流同轴度的调整。 [0018] (4) loop hole coaxial laser powder feeding nozzle of the present invention, the adjustment of the adjustable screw connection sleeve and the laser head displacement, to overcome processing and installation concentricity error, to achieve a laser beam and the powder flow adjustment concentricity.
附图说明 Brief Description
[0019] 图1是本发明的结构示意图。 [0019] FIG. 1 is a schematic view of the present invention.
[0020] 图2是本发明中锥状喷嘴主体的结构示意图。 [0020] FIG. 2 is a schematic view of a tapered nozzle body structure of the present invention.
[0021] 图3是图2的俯视图。 [0021] FIG. 3 is a plan view of FIG. 2.
[0022] 图中各标号表不: [0022] FIG label each table is not:
1、锥状喷嘴主体；11、冷却水进口；12、冷却水出口；13、环形安装槽；21、连接套筒；22、激光头；23、激光束；3、进粉通道；31、入口；4、环孔锥头；41、环形粉末稳流槽；42、出粉小孔；5、中央水冷套；51、环形凹槽；52、密封圈；6、保护气体通道；61、气体进口；7、连接螺栓；8、调节螺栓；9、调节套筒；91、对中螺钉。 1, the tapered nozzle body; 11, cooling water inlet; 12, cooling water outlet; 13, an annular mounting groove; 21, connecting sleeve; 22, laser head; 23, the laser beam; 3, into the powder passage; 31, inlet ; 61, the gas inlet; 4, ring aperture cone; 41, an annular powder steady flow tank; 42 holes flour; 5, the central water jacket; 51, an annular groove; 52, seals; 6, shielding gas passage ; 7, the connecting bolts; 8, adjusting bolt; 9, adjusting sleeve; 91, on the screws.
具体实施方式 DETAILED DESCRIPTION
[0023] 以下结合说明书附图和具体实施例对本发明作进一步详细说明。 [0023] The description below in conjunction with the accompanying drawings and specific embodiments of the present invention will be described in further detail.
[0024] 图1至图3示出了本发明环孔式激光同轴送粉喷嘴的一种实施例，该环孔式激光同轴送粉喷嘴，包括中空的锥状喷嘴主体1，锥状喷嘴主体I的大径端设有可与激光头22连接的连接套筒21，锥状喷嘴主体I上设有四个周向均匀布置的进粉通道3，进粉通道3的入口31设于锥状喷嘴主体I的大径端，进粉通道3的出口设于锥状喷嘴主体I的小径端，锥状喷嘴主体I的小径端设有一中空的环孔锥头4，环孔锥头4大径端的端面上设有环形粉末稳流槽41，环形粉末稳流槽41与进粉通道3连通，环孔锥头4小径端的端面上设有多个周向均匀分布的出粉小孔42，出粉小孔42与环形粉末稳流槽41连通，各出粉小孔42的粉末流汇集于一点。 [0024] FIGS. 1 to 3 shows a loop-hole laser coaxial powder feeding nozzle of the present invention to one embodiment, the ring aperture laser coaxial powder feeding nozzle includes a hollow cone nozzle body 1, tapered I large-diameter end of the nozzle body is provided with a connecting sleeve can be connected to the laser head 22 21, conical nozzle body has to feed powder evenly arranged passage 3, four weeks into the powder inlet channel 3 is located on I 31 diameter end of the large diameter end of the tapered nozzle body I, into the powder channel outlet 3 is provided in the tapered nozzle body I, the trail ends I tapered nozzle body is provided with a hollow cone ring holes 4 holes cone ring 4 end face of the large-diameter end of an annular powder steady flow grooves 41, annular groove 41 and the steady flow of powder into the powder channel 3 communicates end surface of the ring bore diameter end of the cone 4 has a plurality of circumferentially uniform distribution of the powder 42 holes , flour hole 42 and the annular groove 41 powder steady flow communication with each flour powder flow aperture 42 converge at one point. 锥状喷嘴主体I的上端为大径端，连接套筒21、锥状喷嘴主体I和环孔锥头4的内孔形成激光束通道；粉末经由进粉通道3，到达环形粉末稳流槽41，粉末在环形粉末稳流槽41内聚集后，再通过多个出粉小孔42喷出，激光束23穿过激光束通道与出粉小孔42喷出的汇聚粉末流耦合，对加工件(图中未示出)进行加工、熔覆、修复和再制造等。 I tapered upper end of the nozzle body for large-diameter end, connecting sleeve 21, conical nozzle body I and ring tapered bore head 4 hole forming laser beam path; powder through the powder inlet channel 3, reach the annular powder steady flow tank 41 powder in the powder steady flow annular groove 41 gathered, and then through a plurality of apertures 42 powder spray, the laser beam 23 passes through the laser beam path is coupled with the convergence of the powder flow ejected powder 42 holes on a workpiece ( figure not shown) for processing, cladding, repair and re-manufacturing. 本实施例的送粉喷嘴，粉末到达环形粉末稳流槽41后，通过多个环形阵列出粉小孔42，使得送粉喷嘴能够在大角度倾斜情况下，获得均匀、小聚焦粉斑、高挺度的粉末流，保证金属沉积过程中金属粉末与聚焦激光的充分作用，提高沉积效率和精度，有效地克服了送粉喷嘴在大倾角加工时由于重力作用而出现的粉末偏聚现象，确保粉末聚焦的均匀性，提高了加工效率。 Powder feeding nozzle of the present embodiment, the annular powder after the powder reaches the steady flow grooves 41, by a plurality of annular arrays flour apertures 42, so that the powder feeding nozzle can be tilted in the case of large angles, to obtain a uniform, small focus spot powder, high powder flow stiffness, metal deposition process to ensure that the metal powder with the full role of the focused laser, and improve deposition efficiency and accuracy, effectively overcome the powder powder feeding nozzle when processing large dip occurs due to gravity segregation phenomenon, to ensure uniformity of focusing the powder, improve the processing efficiency.
[0025] 本实施例中，环孔锥头4通过连接螺栓7与锥状喷嘴主体I的小径端可拆卸的连接，即采用螺栓连接，方便更换不同规格的环孔锥头4。 [0025] In this embodiment, the ring hole cone 4 bolts 7 and the tapered end of the nozzle body trails I detachable connection, namely, with bolts, to facilitate the replacement of different specifications of the ring hole cone 4. 环孔锥头4下端(小径端)端部设计为沿激光束23方向直径变大的锥体结构，能够提高激光束23能量的利用率和粉末的利用率。 4 the lower end (small diameter end) of the end loop hole designed cone 23 along the direction of the diameter of the laser beam becomes large cone structure, it is possible to improve the utilization efficiency of the laser beam 23 and the energy of the powder.
[0026] 本实施例中，环形粉末稳流槽41的宽度与进粉通道3的直径相等，环形粉末稳流槽41的深度大于出粉小孔42孔深的二分之一，有利于进粉通道3内的粉末能够畅通的进入环形粉末稳流槽41并聚集，确保出粉小孔42喷出的粉末准直和高挺度。 [0026] In this embodiment, the width of the annular groove and the steady flow of powder into the powder passage 41 of a diameter equal to 3, the depth of the annular groove 41 of the steady flow of the powder is greater than the depth of one-half the powder bore hole 42, into favor 3 powder inside powder can smooth passage into the annular groove 41 and the steady flow of powder aggregates, ensure the powder collimation and high stiffness ejected powder 42 holes.
[0027] 出粉小孔42的直径为D，数量为N个，其中，0.8mm彡D彡1.5_，10 ^ N ^ 30 ；出粉小孔42的中心线与锥状喷嘴主体I轴线的夹角α，10° ( α <30° ;本实施例中出粉小孔42的直径D为0.8mm，出粉小孔42抛光处理，能够获得直径为2_4mm的粉末汇聚点，出粉小孔42的数量为24个，出粉小孔42的中心线与锥状喷嘴主体I轴线的夹角α为20°。 [0027] The pore diameter of the powder 42 is D, the number into N, wherein, 0.8mm San D San 1.5_, 10 ^ N ^ 30; flour centerline hole 42 with tapered nozzle body axis I angle α, 10 ° (α <30 °; the diameter D 42 of the embodiment of the present embodiment is a powder holes 0.8mm, the holes 42 polishing powder, can be obtained as a powder diameter 2_4mm focal point of the powder hole 42 is the number of 24, an angle α with the centerline of the powder orifice tapered I axis of the nozzle body 42 is 20 °.
[0028] 本实施例中，锥状喷嘴主体I的内孔内设有中央水冷套5，中央水冷套5外表面设有多个相互连通的环形凹槽51，锥状喷嘴主体I上分别设有冷却水进口11和冷却水出口12，冷却水进口11和冷却水出口12均与环形凹槽51连通，冷却水在环形凹槽51形成冷却通道，对锥状喷嘴主体I的壳体进行散热，中央水冷套5外表面与锥状喷嘴主体I的内孔的侧壁之间设有密封圈52，保证水冷结构密封可靠。 [0028] In this embodiment, the tapered inner bore of the nozzle body I with a central water jacket 5, the outer surface of the central water jacket 5 with an annular groove 51 of a plurality of interconnected, tapered nozzle body disposed respectively on I a cooling water inlet 11 and a cooling water outlet 12, cooling water inlet 11 and a cooling water outlet 12 are communicated with the annular groove 51, the cooling water cooling channels 51 are formed in the annular groove of the nozzle body I tapered housing for cooling , provided between the outer surface of the side wall of the bore 5 central water jacket and tapered nozzle body I of the ring 52, to ensure reliable sealing cooling structure.
[0029] 本实施例中，锥状喷嘴主体I上还设有四个周向均匀布置的保护气体通道6，保护气体通道6与进粉通道3交错布置，保护气体通道6与锥状喷嘴主体I的内孔连通，保护气体通道6的气体进口61设置在锥状喷嘴主体I的大径端，气体进口61与进粉通道3的入口31布置如图3所示，保护气体通过四路保护气体通道6，进入锥状喷嘴主体I的内腔，对激光透镜和沉积层起到保护作用。 [0029] In this embodiment, the tapered nozzle body I also provided with four circumferentially uniform arrangement of shielding gas channel 6, shielding gas channel 6 and channel 3 staggered into powder, shielding gas channel 6 with a tapered nozzle body I The bore communicates shielding gas passage 6 of a gas inlet 61 provided at the large diameter end of a tapered nozzle body I, with the gas inlet 61 into the dust passage 31 of the inlet arrangement 3 shown in Figure 3, four protected by protective gas gas channel 6, into the cone of the nozzle body I cavity, the laser lens, and deposit protection.
[0030] 本实施例中，连接套筒21通过调节螺栓8与锥状喷嘴主体I连接，通过调节调节螺栓8的长短可以调节粉末流焦点与激光束23焦点间的离焦距离，同时可调节至两者重入口ο [0030] In this embodiment, the connecting sleeve 21 8 I connected with the tapered nozzle body by adjusting the bolts, adjust the length by adjusting the screw 8 can regulate the powder flow focus the laser beam focal distance, while the focus can be adjusted between 23 Entrance to both weight ο
[0031] 本实施例中，锥状喷嘴主体I大径端的端面上设有一环形安装槽13，连接套筒21外表面套设有一调节套筒9，调节套筒9与环形安装槽13螺纹连接，调节套筒9伸出环形安装槽13的外表面上设有四个均匀分布的对中螺钉91，调节对中螺钉91可调节连接套筒21和激光头22的位移，实现激光束23与粉末流同轴度的调整，克服加工和安装过程中的误差。 [0031] In this embodiment, the tapered end surface of the large diameter end of the nozzle body I is provided with an annular mounting groove 13, the outer surface of the sleeve 21 is connected with an adjusting sleeve 9 sets, adjusting sleeve 9 is connected with the annular mounting grooves 13 Thread adjusting sleeve 9 extending the outer surface of the annular mounting groove 13 is provided with four evenly distributed on the screw 91, the adjusting screw 91 to adjust the displacement of the coupling sleeve 21 and the laser head 22 to achieve a laser beam 23 powder flow adjustment coaxial overcome processing and installation errors.
[0032] 虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明。 [0032] While the invention has been revealed as the preferred embodiment, however, not intended to limit the invention. 任何熟悉本领域的技术人员，在不脱离本发明技术方案范围的情况下，都可利用上述揭示的技术内容对本发明技术方案做出许多可能的变动和修饰，或修改为等同变化的等效实施例。 Any skilled in the art, without departing from the scope of the invention program, can use the technology disclosed the contents of the above-mentioned aspect of the present invention may make many variations and modifications, changes or modifications as equivalent equivalent implementation example. 因此，凡是未脱离本发明技术方案的内容，依据本发明技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均应落在本发明技术方案保护的范围内。 Therefore, all without departing from the content aspect of the present invention, any simple modification technique based on the substance of the above embodiments of the present invention made an example of, equivalent changes and modifications shall fall within the scope of the protection aspect of the present invention.
| Cited Patent | Filing date | Publication date | Applicant | Title |
|---|---|---|---|---|
| CN2510502Y * | Oct 18, 2001 | Sep 11, 2002 | 北京有色金属研究总院 | Laser coating coaxial powder-delivery nozzle |
| CN101024881A * | Feb 17, 2007 | Aug 29, 2007 | 通用电气公司 | Nozzle for laser net shape manufacturing |
| US6396025 * | Aug 4, 1999 | May 28, 2002 | Aeromet Corporation | Powder feed nozzle for laser welding |
| Date | Code | Event | Description |
|---|---|---|---|
| Jun 10, 2015 | C06 | Publication | |
| Jul 8, 2015 | C10 | Entry into substantive examination | |
| Jun 13, 2017 | GR01 |
