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WANG Yongzhang
LIU Tao
FU Hongya
HAN Zhenyu
School of Mechanical and Electrical
Engineering,
Harbin Institute of Technology,
Harbin 150001, China
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OPEN ARCHITECTURE CNC SYSTEM HITCNC
AND KEY TECHNOLOGY
Abstract:
Aiming at the characteristics of
modularity and reconfigurable in open architecture computer
numerical control (CNC) system, the open architecture CNC
system, Harbin Institute of Technology computer numerical
control (HITCNC), is researched and manufactured based on the
interface standards. The system’s external interfaces are
coincident with the corresponding international stan-dards, and
the internal interfaces follow the open modular architecture
controller (OMAC) agreement. In the research and manufacturing
process, object-oriented technology is used to ensure the
openness of the HITCNC, and static programming is applied in the
CNC system according to the idea of modu-larization disassembly.
The HITCNC also actualizes real-time and unreal-time modules
adopting real-time dynamical linked library (RTDLL) and
component object model (COM). Finite state ma-chine (FSM) is
adopted to do dynamically modeling of HITCNC. The complete
separation between the software and the hardware is achieved in
the HITCNC by applying the SoftSERCANS technique. The
application of the above key techniques decreases the
programming workload greatly, and uses software programs
replacing hardware functions, which offers plenty technique
ensures for the open-ness of HITCNC. Finally, based on the
HITCNC, a three-dimensional milling system is established. On
the system, series experiments are done to validate the
expandability and interchangeability of HITCNC. The results of
the experiments show that the established open architecture CNC
system HITCNC is correct and feasible, and has good openness.
Key words:
Harbin Institute of Technology computer numerical control(HITCNC)
Open architecture CNC system Interface standard Statically modeling
Finite state machine (FSM) SoftSERCANS
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