具体实施方式 DETAILED DESCRIPTION

[0038] 下面结合具体实施例对本发明作进一步具体详细描述。 [0038] In the following with reference to specific embodiments of the present invention is further described in detail for specific.

[0039] 实施例 [0039] Example

[0040] 如图1、2所示。 [0040] shown in Figs. 本发明一种纳米级零部件激光烧结成型装置，包括混合进样系统1、空气动力学透镜2、共焦激光器组3和工作台4 ;工作台4采用高精密工作台，其具有与纳米级零部件成型精度同数量级的移动精度。 The present invention is a nanoscale laser sintering apparatus components, including mixed injection system, aerodynamic lens 2, confocal laser group 3 and table 4; Table 4 High Precision workstations, which has nanoscale Parts molded with much precision movement of magnitude.

[0041] 所述混合进样系统I连接空气动力学透镜2，空气动力学透镜2位于工作台4上方； [0041] The mixed injection system I connected aerodynamic lens 2, an aerodynamic lens 2 is located above the work table 4;

[0042] 所述混合进样系统I包括一个缓冲腔1-6，该缓冲腔1-6腔体的内侧壁由上至下逐渐收缩，或者缓冲腔1-6的内侧壁与内底壁之间弧形过渡； [0042] I said mixing injector system includes a buffer chamber 1-6, 1-6 inner wall of the buffer chamber cavity tapers from top to bottom, or the side wall of the buffer chamber within 1-6 with an inner bottom wall of the transition between the arc;

[0043] 所述共焦激光器组3位于空气动力学透镜2与工作台4之间。 [0043] The confocal laser aerodynamic lens group 3 is located between 2 and table 4.

[0044] 所述混合进样系统I还包括依次连接的进样机构、用于形成气溶胶流的混合腔1-5 ； [0044] The mixed injection system I also include the injection mechanism connected in turn, is used to form an aerosol stream mixing chamber 1-5;

[0045] 所述进样机构分为两个出口并联的支路，该两个支路中均包括依次连接的气源1-1和流量控制阀1-2 ;气源1-1宜采用氦气，排量范围涵盖2-20L/min。 [0045] The injection mechanism is divided into two branches in parallel exports, that the two branches are in turn connected to the gas source including 1-1 and the flow control valve 1-2; 1-1 should adopt the helium gas source gas, displacement ranging 2-20L / min.

[0046] 该两个支路，其中一个支路的流量控制阀1-2与混合腔1-5之间设置粉末储存腔 [0046] the two branches, one branch of the flow control valve 1-2 set between the powder storage chamber and the mixing chamber 1-5

1-4，该支路的流量为2-5L/min ;在另外一个支路的流量控制阀1_2与混合腔1_5之间设置流量计1-3，该支路的排量范围涵盖2-20L/min ； 1-4, the branch flow 2-5L / min; in another branch of the flow control valve between the mixing chamber 1_2 1_5 1-3 and set up the meter, the displacement range of the branch covers 2-20L / min;

[0047] 所述进样机构两个支路的出口并联后连接混合腔1-5，混合腔1-5再通过管路连接缓冲腔1-6。 [0047] The injection mechanism after two branches connected in parallel to the mixing chamber outlet 1-5, 1-5 and then connect the mixing chamber through the pipe buffer chamber 1-6.

[0048] 所述缓冲腔1-6设置在空气动力学透镜2的上端部。 [0048] The buffer chamber provided at an upper end portion 1-6 aerodynamic lens 2.

[0049] 所述空气动力学透镜2包括柱形腔体2-1和设置在柱形腔体2-1下端部的喷嘴 [0049] The aerodynamic lens 2 comprises a cylindrical cavity in the nozzle lower end of the 2-1 2-1 and set up a cylindrical cavity

2-3 ； twenty three ;

[0050] 在柱形腔体2-1内设置透镜组2-2，该透镜组2-2由多个相互间隔、沿柱形腔体 [0050] a lens group within 2-1 2-2 cylindrical cavity in the lens group 2-2 each other by a plurality of spaced along the cylindrical cavity

2-1轴向排列并固定在柱形腔体2-1内的透镜构成。 2-1 axially aligned and fixed lens within 2-1 cylindrical cavity composition. 透镜具有3-5级，柱形腔体2-1的内径约25mm。 3-5 grade lens has an inner diameter of the cylindrical cavity about 2-1 25mm.

[0051] 所述透镜组2-2的每个透镜上均开有汇聚孔，各汇聚孔的轴线与喷嘴2-3的轴线同轴。 [0051] The lens group on each lens 2-2 are opened aggregation hole, coaxial with the axis of each hole and the axis of the nozzle converge 2-3.

[0052] 柱形腔体2-1与水平面垂直；所述工作台4为活动平台，能在X、Y或Z轴方向运动。 [0052] cylindrical cavities 2-1 and the horizontal plane perpendicular; table 4 is the moving platform, capable of moving in the X, Y or Z axis direction.

[0053] 根据实际工作需要，该每个透镜上的汇聚孔的孔径各不相同或者相同。 [0053] According to the actual work needs, the aperture hole of each lens converge on the same or different.

[0054] 纳米级零部件的激光烧结成型方法可通过如下实现: [0054] The method of laser sintering nanoscale components can be achieved by:

[0055] 首先将纳米颗粒粉末置于粉末储存腔1-4，该粉末经气体携带到混合腔1-5，并与另一支路气体充分混合；所得气溶胶流进入缓冲腔1-6，气体与纳米颗粒粉末进一步混合，压力和流速降低，得到雷诺数为200-700的流体；流体进一步以层流形式进入由多个相互间隔、沿柱形腔体2-1轴向排列并固定在柱形腔体2-1内的透镜，经过每个透镜上的汇聚孔并聚焦后，以单颗粒流形式喷出；颗粒被工作台4上涂有真空脂的烧结基体接收，并被共焦激光器组3的激光器融化；通过工作台4在X、Y方向的移动，即可获得具有纳米级成型精度的二维图样；通过在Z轴方向移动，即可逐层堆叠获得具有纳米级成型精度的零部件。 [0055] First, the nanoparticle powder placed in a powder storage chamber 1-4, the powder carried by gas into the mixing chamber 1-5, and thoroughly mixed with the other leg gases; the resulting aerosol flow into the buffer chamber 1-6 Further nanoparticle powder with a mixed gas, reducing the pressure and flow rate to give a Reynolds number of a fluid 200-700; and further a laminar flow of fluid entering each other by a plurality of spaced, axially aligned in 2-1 and fixed in the cylindrical cavity 2-1 inner cylindrical lens cavity, after gathering hole on each lens and focused to form a single particle flow ejected; particles are coated with vacuum grease table on 4 sintered base received by confocal melting laser array laser 3; table 4 is moved by the X, Y directions, a two-dimensional pattern can be obtained having nanoscale precision molding; in the Z-axis direction by moving, layer by layer stacking can be obtained with nanoscale precision molding parts.

[0056] 以下作进一步具体说明: [0056] The following further details:

[0057] (I)启动两个支路的气源1-1，将气源1-1流量范围调节至2_20L/min，对应进入空气动力学透镜2的气溶胶流雷诺数范围为200-1000 ； [0057] (I) started 1-1 two branches of the gas source, the gas supply flow range was adjusted to 1-1 2_20L / min, aerodynamic lens aerosol flow Reynolds number 2 corresponds enter 200-1000 ;

[0058] (2)进入两个支路的气体携带粉末储存腔1-4中的纳米颗粒粉末，通过管路进入混合腔1-5内充分混合，并形成纳米颗粒气溶胶后再进入缓冲腔1-6 ； [0058] (2) into the two branches of the gas storage chamber carrying powder 1-4 nanoparticle powder, mixed by pipeline into the mixing chamber within 1-5, and the formation of aerosol nanoparticles before entering the buffer chamber 1-6;

[0059] (3)气溶胶在缓冲腔1-6中缓冲，并进一步混合均匀，此时流速和压力下降；缓冲腔1-6的内径约75mm。 [0059] (3) an aerosol in the buffer in the buffer chamber 1-6, and further mixed uniformly, then the flow rate and pressure drop; buffer chamber inner diameter is about 1-6 75mm.

[0060] (4)接着，气溶胶流在缓冲腔1-6内缓冲后进入空气动力学透镜2，气溶胶流进入空气动力学透镜2前形成雷诺数为200-1000的层流流体； [0060] (4) Next, the aerosol stream in the buffer after the buffer chamber 1-6 into the aerodynamic lens 2, the aerosol flow into the aerodynamic front lens 2 is formed as a laminar flow Reynolds number of the fluid 200-1000;

[0061] (5)气溶胶流体依次经过柱形腔体2-1的透镜上的汇聚孔；不同粒径范围的纳米颗粒由其中一级汇聚孔汇聚，经汇聚后的颗粒流保持沿柱形腔体2-1的轴线方向流动，并经喷嘴2-3喷出，仍保持轴线方向； [0061] (5) aerosol fluid sequentially through a cylindrical cavity converge on the lens aperture 2-1; different size range of nanoparticles by the hole in which the aggregation level aggregation, particle flow through the gathering after holding along the cylindrical the cavity in the axial direction of the flow of 2-1 and 2-3 is ejected through the nozzles, remained in the axial direction;

[0062] (6)熔化后的纳米颗粒流熔覆于烧结基板4-1上，凝固后与基板粘结； [0062] (6) nanoparticles melt flow after cladding sintered substrate 4-1, after solidification bonding with the substrate;

[0063] (7) 二维图样的形成:调节工作台4在X、Y平面上移动，接收后续的纳米颗粒，纳米颗粒熔覆、凝固后形成二维图样； [0063] (7) forming a two-dimensional pattern of: adjusting table 4 is moved in the X, Y plane, to receive the follow-up of nanoparticles, the nanoparticles cladding to form a two-dimensional pattern after solidification;

[0064] (8)三维零件模型的形成:工作台4在Z轴上移动，后续纳米颗粒熔覆于步骤7中二维图样上，逐层堆叠，得到三维零件模型；从而完成纳米级零部件的激光烧结成型。 [0064] forming (8) 3D component model: Table 4 in the Z-axis movement, follow the nanoparticles Clad in step 7, the two-dimensional drawings, layer by layer stacking to give a three-dimensional part model; thus completing the nanoscale components The laser sintering.

[0065] 如上所述。 [0065] As described above. 当汇聚后的颗粒流保持沿柱形腔体2-1的轴线方向流动，并经喷嘴2-3喷出，仍保持轴线方向，此时通过激光器组3激光器的多个共焦点，聚焦于纳米颗粒流轨迹并相邻于烧结基板表面4-1的上方，此时，激光器组3将纳米颗粒加热至熔点以上。 When the particle aggregation after the stream remains along the axial direction of the cylindrical cavity flow 2-1 and 2-3 is ejected through the nozzles, remained in the axial direction, this time by more than a confocal laser group 3 laser, focus on nano particle flow trajectories and above the surface of the substrate adjacent to the sintering 4-1, this time, the laser group 3 nanoparticles heated to above the melting point.

[0066] 如上所述，便可较好地实现本发明。 [0066] As described above, the present invention can be better achieved.

[0067] 本发明的实施方式并不受上述实施例的限制，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。 [0067] embodiment of the present invention is not limited to the above embodiments, the present invention is to change under any other not depart from the spirit and principles made, modification, replacement, combination, simplification, shall be replaced with an equivalent manner, They are included in the scope of the present invention.