基于PC+DSP的滚齿数控系统的开发

Development of Hobbing CNC System Based on PC + DSP

随着社会和工业领域对齿轮加工质量和加工效率要求的不断提高,对滚齿数控系统提出了更高要求。鉴于目前滚齿机虽应用广泛,但仍以传统的机械式滚齿机为主,滚齿数控系统发展相对滞后,不能满足齿轮加工的要求,提出了对滚齿机进行数控系统的开发,在对传统滚齿机数控系统深入分析的基础上,将展成运动和分度运动纳入数控的思想。借助PC机和DSP芯片进行了滚齿数控系统模型结构设计,完成了数控系统硬件设计并进行了相应的软件设计,实现了软硬件之间的串口通信,并进行了相应的程序设计。系统的创新点是实现了一般位移和展成、分度运动的全数控化,充分发挥了DSP强大的运算能力和高速性。试验表明,该系统实现了对展成和分度运动的精确控制,达到了预期效果。

With the development of society and industry , the requirements of gear machining quality and efficiency continue to improve, which requires a higher request to the gear CNC system. Now, the hobbing machine is widely used, but still with the traditional mechanical gear hobbing machine. The development of hobbing CNC system is relative lag, and it cannot satisfy the requirement of gear processing. Therefore this paper puts forward the development of CNC system for gear bobbing machine. Based on the depth analysis of traditional hobbing machine CNC system, it proposes a thought that put generating motion and indexing movement into CNC and designs the rolling model structure of CNC gear system with PC and DSP chip, finishes the designation of the hardware of the number control system and the corresponding software, realizes the serial communication between hardware and software, and designs the corresponding program. The innovation point of system is the realization of the numerical control of the general displacement and expansion movement, it gives the full play of the powerful DSP computing power and speed. After testing, the system has achieved the precise control of generating and indexing motion, which achieves the desired effect.