Study On Measurement And NC Grinding Simulation Of Blade Surface Based On UG

Nowadays, electricity industry is developing rapidly。 The demand of dynamoequipments, such as steam turbine, water turbine, gas turbine and so on, isincreasing day an day, so it is important to improve the quality of dynamo equipments.As the key part of those equipments, turbine blade must be polished precisely.Commonly, it is necessary to grind the blade surface by hand after NC milling. Incomparison with hand-grinding, NC belt-grinding can improve not only the workingenvironment but also the machining precision and work efficiency. To ensure NCbelt-grinding work well, positive pressure needs to be exerted on the blade surface。Programming of NC belt-grinding machine is difficult and grinding machine is complex.Presently, because few factories use multi-axis grinding machine, there is not thefunction of grinding simulation in general CAD/CAM software. This paper studiesthe measurement of blade surface and NC belt-grinding technology based on UGsoftware and finishes the error calculation and analysis of blade surface,similarity calculation of blade section by Gray System Theory as well as calculationof cutter location data of grinding in UG environment. Further more, surface erroris converted to positive pressure which grinding needs by some formula, and grindingsimulation can be realized. Further development on UG is necessary in order toachieve those aims. At last, new blade measuring-machining system is put forward.This paper introduces development of NC belt-grinding simulation software basedon UG as well as presents application examples in detail. It mainly includes thefollowing aspects: the first is the modeling of blade, benchmark emendation andcalculation of surface error;the second is the realization of simulation usingcutter location and positive pressure;the last is interface design based on VC++6.0,UG/OPEN API and UIStyler.