No abstract

No abstract

In the present study, the tool wear has been monitored using the cutting sound acoustic spectrum and the linear predictive cepstrum coefficient (LPCC) of the milling sound signal would be extracted to be used as the acoustic spectrum characteristic parameters. The relationship between each order component of LPCC and the flank wear of the tools was analysed. The experimental results show that there are clear characteristic components in the milling sound signal related to the tool wear. It has been found that the characteristic components associated with tool wear are mainly concentrated in the sixth-, seventhand eighth-order components of LPCC.

No abstract

No abstract

No abstract

No abstract

At present, the ability to generate the tools processing path is commonplace in CAD/CAM systems, but the technology used for NC programming is still based on G, M code. According to all questions of the CNC system, it is proposed a new idea that we use one of the UG modules UG GRIP to generate the tools processing coordinates to replace the G, M code program. And we make use of kernel platform as a middleware providing bridges between the software modules on upper-computer and the CNC machine by using the process and resource models. In addition, we detailed introduce the DSP control system design and software design based on this design concept, and give the control flow. it initial realizes X-Y table of the CNC milling machine two-axis moving at the same time base on DSP, which not only prove the correctness of previous principle but are beneficial to further research and application.