| With the replacement of consumer electronic products faster and faster, PCB market demand,and make the performance requirements of PCB drilling machine and other related PCBmanufacturing equipment continue to increase. CNC is the core part of PCB drilling machine, anddirectly affects the machining accuracy, processing efficiency and reliability of the drilling machine.Therefore, the paper has researched on a number of key technologies in development of CNC for PCBdrilling machine and developed a prototype of PC-based CNC for PCB drilling machine.In order to improve the opening of CNC, use the "PC+motion control card" architecture for theCNC. By analyzing the requirements of CNC for PCB drilling machine, planned the overall structureand the hardware of the system, and designed the main modules of the host computer software andmotion control DSP software in detail.PCB drilling tool path optimization can reduce the PCB drilling tool path orientation time andincrease drilling efficiency. To this end, established a best tool path model of PCB drilling, andproposed an ant colony optimization algorithm, which is based on clustering. The algorithm is aneffective solution to the PCB drilling tool path optimization, and can improve the optimize efficiencysignificantly.To improve the machine tool motion stabilization and ensure the accuracy of high-speed PCBdrilling, the S-curve acceleration and deceleration method is applied to the CNC for PCB drillingmachine, given the specific implementation. In addition, the paper proposed a fractional powerpolynomial acceleration and deceleration algorithm, which can ensure the continuity of jerk in theprocess of acceleration and deceleration and further improve the smooth motion of the system.The CNC developed for PCB drilling machine was tested in a drilling machine, and proved theprocessing path optimization algorithm, the acceleration and deceleration control algorithm and thesystem prototype to be effective and correct. |
PDF Full Text Request