梯形螺文首、尾丝扣毛刺处理工艺研讨

在机械加工中,螺纹连接、螺纹传动被广泛应用,文章通过多年实践经验总结出在车削螺纹工序,利用车床处理螺纹引扣、尾扣及牙顶毛刺的加工要领；优化生产工艺,为螺纹车削加工提供更大的利润空间、更好的质量保证的同时大大降低工人劳动强度.     

Eliminate the glitch in design of CPLD/FPGA

Complex Programmable Logic Device(CPLD) and Field Programmable Gate Array(FPGA) play more and more important roles in design of modern digital system. But sometimes, the glitch in design of the system become handicap of succeedable design. This paper analyses the cause, judge and locate of glitch in design of modern digital system apply the component of CPLD/FPGA. Three methods about eliminate the glitch make use of EDA tools are discussed and some examples are given.