会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Non-symmetrical stress-resistant rotary drill bit cutter element
    • 非对称耐应力旋转钻头刀具元件
    • US6059054A
    • 2000-05-09
    • US879872
    • 1997-06-20
    • Gary Ray PortwoodGary Edward GarciaJames Carl MinikusPer Ivar NeseChris Edward CawthorneScott D. McDonough
    • Gary Ray PortwoodGary Edward GarciaJames Carl MinikusPer Ivar NeseChris Edward CawthorneScott D. McDonough
    • E21B10/16E21B10/52E21B10/56E21B10/567E21B10/08
    • E21B10/5673E21B10/16E21B10/52
    • A cutter element that balances maximum gage-keeping capabilities with minimal tensile stress induced damage to the cutter elements is disclosed. The cutter elements of the present invention have a non-symmetrical shape and may include a more aggressive cutting profile than conventional cutter elements. In one embodiment, a cutter element is configured such that the inside angle at which its leading face intersects the wear face is less than the inside angle at which its trailing face intersects the wear face. This can also be accomplished by providing the cutter element with a relieved wear face. In another embodiment of the invention, the surfaces of the present cutter element are curvilinear and the transitions between the leading and trailing faces and the gage face are rounded, or contoured. In this embodiment, the leading transition is made sharper than the trailing transition by configuring it such that the leading transition has a smaller radius of curvature than the radius of curvature of the trailing transition. In another embodiment, the cutter element has a chamfered trailing edge such that the leading transition of the cutter element is sharper than its trailing transition. In another embodiment, the cutter element has a chamfered or contoured trailing edge in combination with a canted wear face. In still another embodiment, the cutter element includes a positive rake angle on its leading edge.
    • 公开了一种用于平衡最大保持能力和对刀具元件的最小拉伸应力引起的损伤的切割元件。 本发明的切割元件具有非对称的形状,并且可以包括比常规切割元件更具侵蚀性的切割轮廓。 在一个实施例中,切割器元件构造成使得其前表面与磨损面相交的内角小于其后表面与磨损面相交的内角。 这也可以通过提供切割器元件具有缓解的磨损面来实现。 在本发明的另一个实施例中,本刀片元件的表面是曲线形的,并且前表面和后表面之间的过渡是圆形或轮廓。 在该实施例中,通过对其进行配置,引导转变比尾随转换更尖锐,使得前导转换的曲率半径比后跟转换的曲率半径小。 在另一个实施例中,切割器元件具有倒角后缘,使得切割器元件的前导过渡比其拖尾过渡更尖锐。 在另一个实施例中,切割器元件具有与斜面磨损面组合的倒角或轮廓后缘。 在另一个实施例中,切割器元件在其前缘上包括正的前角。