Blade, large PDC cutter, parabolic profile and deep blade design.

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A new technique,"Curvature Method", recognizing edges of gear cutters is introduced, the tracking principle for scanning edge profile of gear cutter is developed and a robust method is proposed to automatically distinguish boundary points of assessing region.

系統(tǒng)地研究了螺旋曲面特征線的測量原理，建立了特征線的誤差模型A级黄黄色网站，給出了相應的誤差評定方法国产精品综合美一区二三；并首次將特征線誤差劃分為三種基本形態(tài)，同時給出了各形態(tài)的數(shù)學模型国产一级永久免费在线。

Blade, large PDC cutter, parabolic profile and deep blade design.

使用抗回旋技術(shù)久久精品最新地址，拓寬鉆頭使用范圍到較硬地層。

In order to raise drilling speed of the non saline dome wells in Kenkiyak Oilfield, the relationship between rake angles of the cutter, profile of the bit, which have effect on cutting depth and impact-resistant of PDC bit cutters, and cutting efficiency is studied respectively using finite element analysis according to rock properties of the research area. The structure of the PDC bit is then optimized by using the research result.

為提高肯吉亞克油田非鹽丘井鉆井速度女人张开腿让男桶喷水高潮，根據(jù)地層巖石力學參數(shù)評價結(jié)果国产福利久久无码91，利用有限元方法對影響PDC鉆頭攻擊性和抗沖擊性的齒前角、冠部形狀等結(jié)構(gòu)參數(shù)與破巖效果之間的關(guān)系進行了研究91超碰在线资源，并對PDC鉆頭的結(jié)構(gòu)進行了優(yōu)化設計把女人弄到爽特黄a大片。

On the contrary, the teeth profile of elliptical gear should be generated when spur gear is replaced by pinion cutter and the elliptical gear is replaced by elliptical blank.

按反求設計的觀點一级黄色站，將橢圓齒輪換成橢圓齒坯，將直齒圓柱齒輪換成插齒刀久久久久久精品免费福利，則可以對橢圓齒輪進行插齒加工色哟哟精品网站在线观看。