开发了三牙轮钻头CAD系统，三牙轮钻头图纸的参数是非常必要的。 由于三牙轮钻头也是一种work.Theoveralldesignofthesystemthree-conedrillparametric绘图systemfunctionmodularprogrammingmethod，该wholesystem划分intofourfunctional模块：用户interfacemanagement模块，drillthetooth surfacestructuredesign模块，databasemanagement模块，parametricdrawingmodule。 用户界面设计，嵌入式inAutoCADVBAsecondary开发工具。 Theuserthrough用户interfacemodule，enterthethree-conedrill bitdesignparametersto achievehuman-computerexchange的信息。

钻齿面的结构设计模块的主要功能是根据理论丁极牙轮钻头设计复杂的设计数据来计算三牙轮钻头。 数据库管理模块是通过表格中的数据建立在Access 2003 database.Thisdrillisveryuseful，以及我们也要跟着讲究tothenext，theuseofthis工具。

牙轮钻头的钻岩工具已被广泛应用于钻性能的提升直接降低钻井成本，尤其是在过去十年中进步最快。

Developed a three-cone drill CAD system, the parameters of the three-cone drill drawing is very necessary. Because the three-cone drill is also a kind of work.Theoveralldesignofthesystemthree-conedrillparametric drawing systemfunctionmodularprogrammingmethod, the wholesystem is divided intofourfunctional modules: user interfacemanagement module, drillthetooth surfacestructuredesign module, the databasemanagement module, parametricdrawingmodule. User interface design, embedded inAutoCADVBAsecondary development tools. Theuserthrough the user interfacemodule, enterthethree-conedrill bitdesignparametersto achievehuman-computerexchange of information.

Drill the tooth surface structure design module main function is to calculate the three-cone drill bit according to the theory ofthree-cone drill bit design complex design data. The database management module is established by the data in tabular form in Access 2003 database.Thisdrillisveryuseful, as well as wemust pay attention tothenext, theuseofthis tool.

Cone bit as a rock-drilling tools have been widely used in drill performance improvements directly reduce the cost of drilling, especially in the past decade most improved.