D rilling is a key process in the production of printed circuit board (PC B ). Pressure foot plays an im portant role in the drilling process,and the w orkpiece m achining quality is close related w ith the com bining form of pressure foot and sucking dust cover. T he m ainstream com binatorial structures in the m arket are analysed w ith the help of test com bined w ith num erical sim ulation m ethod. T he paper presents a system atic solution of pressure foot design in engineering,appropriate param eter is obtained on the basis of a series of tests to achieve high perform ance of dust collection and high quality drilling.

T he different bodies of PC B N C m ulti-axis connecting drilling m achine w ith different structure and different m aterials usually adopt different structural support, this paper aim s at tw o kinds of external support structure tested chatter, find a large difference of PC B N C drilling m achine dynam ic perform ance. T hrough sim ulation and test and B y m aking use of the experim ent m eans to reveal the deform ation of supporting structure and the supporting structure leads to the reasons of the differences of PC B N C drilling m achine dynam ic perform ance, provide availability data basis for im proving the dynam ic perform ance of PC B N C drilling m achine.

基于Adams多体动力学分析软件对飞针测试机同步带传动系统进行仿真计算,研究同步带的运动特性.通过仿真获得测试头的加速度、速度及位移和同步带的受力等曲线,为飞针测试机同步带传动系统的设计和改进提供参考.

The invention provides a dynamic error measuring system of a high-speed machine tool. The dynamic error measuring system of the high-speed machine tool comprises a reference substance, a scale device and a high-speed image recording device. The scale device is fixed to a machine tool large component moving at high speed and moves at high speed along with the machine tool large component. The high-speed image recording device is used for recording the scale, located on the scale device, of the reference substance so that the deviation between moving trails of the large component of the machine tool can be obtained in the operating process. The dynamic error measuring system of the high-speed machine tool comprises a machine tool small component, a scale device and a high-speed image recording device, wherein the scale device is fixed to one side of the machine tool small component moving at high speed, and the high-speed image recording device is arranged on the other side of the machine tool small component moving at high speed and used for recording the scale, on the scale device, of the machine tool small component moving at high speed. The high-speed image recording devices can directly read the scales, on the scale devices, of the machine tool large component or the machine tool small component moving at high speed, so that the dynamic error of the machine tool large component or the machine tool small component moving at high speed is directly, effectively and conveniently measured.

With the development of high density, multi-functions, miniaturization and multi-layer on printed circuit board (PCB) design, great challenges have been presented to the miniaturization of drilling on PCB. In order to meet the hole precision, quality and improve the performance, efficiency of mechanical drilling, further research should be done on the cutting state. Kistler high-precision micro-force platform was used in this paper to test and analyze the cutting force, investigate the general laws of micro drilling, and optimize the parameters for HANS PCB drilling machine. Thereby, to improve the efficiency and precision of the drilling, range of processing, and increasing market competitiveness.