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发明公开
CN107476766A 具有释放特征的切削元件凹窝 无效 - 驳回

具有释放特征的切削元件凹窝
摘要：
本发明公开了具有释放特征的切削元件凹窝。本发明提供一种钻头，所述钻头具有钻头主体。凹窝形成在所述钻头主体的表面中。所述凹窝在所述表面处具有开口并且由后壁与侧壁限定，所述侧壁在所述后壁与所述表面之间延伸。所述凹窝包括在所述侧壁的前端处的应力释放特征，所述应力释放特征用来减少所述凹窝处或其附近的所述钻头主体中的应力集中；在所述侧壁的后端处的应力释放特征，所述应力释放特征用来减少所述凹窝处或其附近的所述钻头主体中的应力集中；或在所述侧壁的前端和后端两者处的应力释放特征。
摘要（英）：

A bit has a bit body. A pocket is formed in a surface of the bit body. The pocket has an opening at the surface and is defined by a rear wall with a sidewall extending between the rear wall and the surface. The pocket includes a stress relief feature at a front end of the sidewall to reduce stress concentrations in the bit body at or near the pocket, a stress relief feature at a rear end of the sidewall to reduce stress concentrations in the bit body at or near the pocket, or stress relief features at both front and rear ends of the sidewall.

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