Research And Development On Numerical-control-based Auto-programming Technology For Rolling-gear Machine

The manual programming method, which uses manpower to carry on processing procedure, computing, compiling programs, inputting programs, checking programs and so on, is the most common programming method of the numerical control machine for gear producing. The main deficiencies of manual programming method are: needing high qualification of programmers' professional specification; being prone to make mistakes when programming, especially when calculating and inputting the NC programs, which may affects the quality of gear; having lower efficiency and longer production period. Developed based on cartography software, most of the existing automatic programming methods only can realize on a computer, which means that the generated NC programs have to be transported to the numerical control machine through network among computers and the numerical control machines.The feasibility of the auto-programming method is analyzed and the mathematical model of NC programming for gear numerical control producing is developed in this paper. The NC program automatically generating technology is studied on the above foundation. Certain parameters like work piece parameter, cutting tool parameter, procedure parameter, are inputted, then are verified and computed, finally the gear's NC program is generated according to the code format of the numerical control system. The auto-programming technology is embedded into SINUMERIK 840D numerical control system by use of the openness of the system, a set of gear auto-programming system based on SINUMERIK 840D numerical control system is studied and developed. As to the non-open numerical control systems, the auto-programming technology applied to embedded system is presented being a assistant equipment for NC programming, and the realization of scheme is analyzed and stated in this paper.After applying the auto-programming technology, not only the gear's production period can be shortened, the efficiency of the gear producing numerical control machine be improved, the operator's labor intensity and the professional technical threshold be reduced, the gear's quality stability and the craft maturity be enhanced, but also the market competitive power of this kind of gear producing numerical control machine can be promoted.