In immediate future the queen completees spare parts process is not  processed that to the feature adjusting entirely form the shape in that way either form shape feature component . 

But each form shape feature either form shape feature series NC's code may generate voluntarily . 

The system opened up at the moment merely is applicable to 2.5D's spare parts process 

The LeeandChang opened up one kind of raised liberal camber feature cutting tool locus of means autogeneration in the way of fictitious border system . 

This systematic work rule is : Being living to inlay inner place the raised liberal camber into one the minimal long and square , so raised liberal camber feature is  transformd into the hollow feature . 

Minimal the long and square incorporation against the end product pattern   constituteed to be called one kind of indirect produce pattern on the fictitious pattern . 

That the cutting tool locus formation means separates into completees three paces : ( 1 ) and the cutting action polyhedron feature ; 

( 2 ) and cuts the liberal camber feature ; 

( 3 ) and the cutting action intersects the feature 

JongYunJung researcies baseds on the non- cutting action cutting tool locus formation problem of feature . 

The article process baseding on the feature locus separates into rough sketch process and processes two types with the inside area , and the definition this two types of process cutting action orientations , attains the aim that the entirety optimizes the cutting tool locus by means of decreasing the cutting action cutting tool locus . 

Type who talked about these fundamental features gos away sword way and cutting tool selection and process order and so on to main being aimed at of article some kinds of fundamental features ( hollow inner place Kong  and step , trough ) , and averting repeatedly going away the sword by means of IP ( InterProgramming ) technique , with the non- cutting action cutting tool locus of optimization . 

Besides JongYunJong still is living , and his doctor in 1991 researcied tabrication feature extraction and baseds on feature cutting tool and the cutting tool way in the dissertation 

The feature process base is an entity process , and surely of course also may think the entity process being more high-quality . 

Yet feature process distinct entity process , and entity process possess it oneself the limitations . 

Feature process  chiefly possess below difference against entity process : 

Through  approximately attends school says that the feature is the meritorous service capacity key element to make up the spare parts , and the operation that accords with engineers and technicians is used to , by engineers and technicians are know intimately ; 

The entity is the geometry target on low straturm , and is a geometric object that obtains after a series of Booleans calculation , and does not  have whatever meritorous service capacity semantic information ; 

It frequently is adjusting the once only process of entire spare parts ( entity ) that the entity is processed . 

Yet in reality the spare parts is not  very much probably merely once processed through in the way of the sword , frequently will go through a series of workmans of rough machining and semi precision work and precision work and so on stage , the place of spare parts difference oridinarily will be employd the difference cutting tool and process ; 

Now and then not only the spare parts will be employd up turning , but also employ up mill . 

Hence entity process is chiefly used spare parts rough machining and semi precision work . 

But but the feature on processing through  essentially resolved the above-mentioned issue ;