激光切割机在加工工件时，首先就是找到合适的位置进行穿孔。如何选择合适的穿刺点呢，下面我们就来就激光切割机的穿刺点来探讨下。
     激光切割加工零件时应该注意一些事项：如果设计零件表面没有粗糙度的限制时，在编程时无需手动处理，可以让控制软件自动生成激光切割穿刺点。如果设计零件表面会有较高的粗糙度限制，那么需要我们在编制激光切割程序时应该对激光束启始位置做手动调整。需要把激光程序原来产生的穿刺点移到需要的合理位置，以达到加工零件表面精度的要求。
       激光切割加工时激光束的工作原理是：在加工过程中，材料经连续激光的照射后在中心形成一个凹坑, 然后由与激光束同轴的工作气流很快将熔融材料去除形成一个孔。此孔类似于线切割的穿线孔，激光束以此孔为加工启始点进行轮廓切割，通常情况下飞行光路激光束的走线方向和被加工零件切割轮廓的切线方向垂直。
      因此，激光束在开始穿透钢板时到进入零件轮廓切割的这一段时间，其切割速度在矢量方向上将有一个很大的改变，即矢量方向的90°旋转，由垂直于切割轮廓的切线方向转为与切割轮廓的切线重合，即与轮廓切线的夹角为0°。这样就会在被加工材料的切割断面上流下比较粗糙的切割面，这主要是在短时间内，激光束在移动中的矢量方向变化很快所至。因此在采用激光切割加工零件时就要注意这方面的情况。
     在不断的研制和实验中，激光切割钣金件成为了一项高科技的加工技术，不仅可以大大减少模具制造成本，也可以降低研发周期，而且还提高了质量及生产效率，有利于改善制造行业技术的更新换代。实际应用中，需要我们不断地积累经验，不断地研发和实践，让这项新技术为我们的生产力提高越来越多的利益。
       一般，在设计零件对表面切割断口没有粗糙度要求时，可以在激光切割编程时不做手动处理，让控制软件自动产生穿刺点；但是，当设计对所要加工的零件切割断面有较高粗糙度要求时，就要注意到这个问题，通常需要在编激光切割程序时对激光束的启始位置做手动调整，即人工对于穿刺点的控制。需要把激光程序原来产生的穿刺点移到需要的合理位置，以达对加工零件表面精度的要求。文章来源：（http://www.akstzs.cn ）
   Laser cutting machine in the processing of the workpiece, the first is to find a suitable location for the perforation. How to choose the appropriate puncture point, below we will come to the laser cutting machine puncture point to explore the next.
Laser cutting parts should pay attention to some matters: if the design of parts surface without the roughness of the restrictions in the programming without manual processing, you can automatically generate the control software laser cutting puncture point. If the design of the parts surface will have a high degree of roughness, so we need to prepare the laser beam when the laser beam should start position to do manual adjustment. It is necessary to move the puncture point of the laser program to the proper position, so as to reach the requirement of the surface precision of the machining parts.
Laser cutting the working principle of the laser beam is: in the process, material after the irradiation of CW laser in the center of the formation a pit, and then by the work flow and laser beam coaxial soon will be molten material removal of the formation of a hole. This hole is similar to line cutting of the thread hole, laser beam on this hole for the processing of opening and starting point of contour cutting, usually under flight light path laser beam walk line direction and the parts to be machined vertically cutting contour tangent direction.
Therefore, laser beam in began to penetrate the plate into the cutting contour parts of this period of time, the cutting speed in vector direction will have a great change, namely the direction vector of 90 degrees rotation by vertical to the cutting contour tangent direction turn and cutting contour tangent coincidence, and contour tangent angle is 0 degrees. In this way, the cutting surface of the processed material is relatively rough cut surface, which is mainly in the short time, the laser beam in the direction of the movement of the vector is very fast. Therefore, in the use of laser cutting parts, we should pay attention to this aspect of the situation.
In the continuous development and experiment of laser cutting sheet metal parts become a high-tech processing technology can not only greatly reduce the mold manufacturing costs, can also reduce the development cycle, but also improve the quality and production efficiency, to improve the manufacturing industry technology upgrading. In practical applications, we need to continue to accumulate experience, continuous research and development and practice, so that the new technology to improve our productivity more and more interests.
, in the design of components of surface cutting fracture no roughness can not to do manual processing in laser cutting programming, to control the software automatically generates the puncture point; however, when design of machining cutting section has higher roughness requirements, note to this problem, usually in series laser cutting program of laser beam starting position be manually adjusted, namely artificial for the puncture point of control. It is necessary to move the puncture point of the laser program to a reasonable position, so as to reach the requirement of the surface precision of the machining parts.