钻头牙轮加工中形位公差的有效控制及检测

Effective control and inspection of form-position tolerance in machining bit cone.

针对三牙轮钻头设计、加工制造过程中长期忽视的形位公差控制免检的可靠性问题 ,对牙轮轴承的形位公差控制对轴承寿命的影响、形位公差设计及形位公差检测可行性等方面做了论述 ,提出牙轮内孔加工形位公差的检测手段和初步设想的检测标准件模型 ,以期实现牙轮轴承加工中形位公差有效规范的控制 ,达到提高牙轮钻头轴承使用寿命之目的。

In the light of the problem with the control of form-position tolerance in machining bit cones, the influence of form-position tolerance control of cone bearing on the service life of the bearing is analyzed, and the design of the form-position tolerance and the feasibility of the form-position inspection are expounded. The methods and means for inspecting the shape-position tolerance is proposed so as to improve the service life of the cone bearing through effective and normative control of the form-position tolerance during the machining of the cone bearing.