公开(公告)号：US07117574B2

公开(公告)日：2006-10-10

申请号：US10389241

申请日：2003-03-14

申请人： Chunghorng R. Liu ,  Salah Ramadan Agha

发明人： Chunghorng R. Liu ,  Salah Ramadan Agha

IPC分类号： B23Q17/00

CPC分类号： F16C33/64 ,  G05B19/4155 ,  G05B2219/36295 ,  Y10T29/49764 ,  Y10T82/10

摘要： A method of determining expected fatigue life of machined bearing races or other components wherein a hardened surface of each bearing race is machined to provide a machined surface including the steps of determining hardness distribution and residual stress distribution along a depth into the machined surface as a function of cutting parameters, determining a relationship of expected fatigue life of the machined bearing races as a function of the hardness distribution and the residual stress distribution using a fracture mechanics model, and determining expected fatigue life from the relationship using actual cutting parameters employed in machining the hardened surface of the bearing races. Cutting conditions to optimize fatigue life can be selected based on the expected fatigue life.

摘要翻译： 确定加工轴承座圈或其他部件的预期疲劳寿命的方法，其中加工每个轴承座圈的硬化表面以提供加工表面，其包括以下步骤：确定沿加工表面的深度的硬度分布和残余应力分布作为一个功能 切削参数，使用断裂力学模型确定机加工轴承座圈的预期疲劳寿命的关系作为硬度分布和残余应力分布的函数，并且根据使用在加工中使用的实际切削参数的关系确定预期的疲劳寿命 轴承座的硬化表面。 可根据预期的疲劳寿命选择切割条件以优化疲劳寿命。

公开(公告)号：US4292865A

公开(公告)日：1981-10-06

申请号：US101980

申请日：1979-12-10

申请人： Chunghorng R. Liu ,  Jnaneshwar H. Nayak ,  Herbjorn Stenberg ,  Felipe J. Huerta ,  Woodrow A. Hall

发明人： Chunghorng R. Liu ,  Jnaneshwar H. Nayak ,  Herbjorn Stenberg ,  Felipe J. Huerta ,  Woodrow A. Hall

IPC分类号： B23B27/16 ,  B23B29/12

CPC分类号： B23B27/1685 ,  B23B27/1674 ,  Y10T407/2234 ,  Y10T407/2246 ,  Y10T82/2572 ,  Y10T82/2585

摘要： A tool holder constituting an adaptive machining control system to automatically manipulate tool rake angle using in-process force feedback. The tool holder includes a rotatable member for holding a cutting member which cuts a workpiece, a motor to rotate the holding member, and a sensor and control logic to sense cutting forces and activate the motor to rotate the holding member and change the tool rake angle. The cutting member is held so that it rotates about an axis through its cutting tip to change the rake angle without varying the depth of cut on the workpiece. In an alternative embodiment, a manually operated tool holder is manipulated to similarly rotate a cutting member to vary the rake angle.

摘要翻译： 一种构成自适应加工控制系统的刀架，用于使用过程中力反馈来自动操纵刀具前角。 工具架包括用于保持切割工件的切割构件的旋转构件，用于旋转保持构件的马达以及用于感测切割力的传感器和控制逻辑，并且启动马达以旋转保持构件并改变工具前角 。 切割构件被保持成使得其绕轴线旋转通过其切割尖端以改变前角而不改变工件上的切割深度。 在替代实施例中，操作手动操作的工具保持器以类似地旋转切割构件以改变前角。

公开(公告)号：US5878496A

公开(公告)日：1999-03-09

申请号：US631686

申请日：1996-04-09

申请人： Chunghorng R. Liu ,  Shridhar Mittal

发明人： Chunghorng R. Liu ,  Shridhar Mittal

IPC分类号： B23Q15/00 ,  B21K1/04 ,  C21D7/04 ,  C21D9/40 ,  F16C33/64 ,  B23P15/00

CPC分类号： F16C33/64 ,  B21K1/04 ,  C21D7/04 ,  C21D9/40 ,  C21D2261/00 ,  Y10S148/906 ,  Y10T29/49689 ,  Y10T29/49758 ,  Y10T29/49764 ,  Y10T29/49776

摘要： A process for manufacturing a component on which in-service stresses are imposed by in-service loading conditions. The process generally entails fabricating the component such that residual stresses are induced in the component that substantially offset one or more primary stresses which would otherwise limit the maximum service life of the component. The residual stresses are induced by creating compressive stresses in the component that extend sufficiently beneath the working surface of the component during fabrication. In order to appropriately attain the necessary residual stresses, the process of this invention includes developing a model of the component, and then applying the in-service loading conditions to the model to determine the in-service stresses on the component. Thereafter, at least one of the in-service stresses is identified as being critical, i.e., a stress that establishes the maximum service life of the component. Finally, the component is fabricated such that necessary residual stresses are induced in the component in order to offset the identified critical stress.

摘要翻译： 用于制造通过在役加载条件施加在职应力的部件的过程。 该方法通常需要制造部件，使得在部件中引起基本上抵消一个或多个主应力的残余应力，否则将限制部件的最大使用寿命。 残余应力通过在组件中产生压缩应力而引起，该压缩应力在制造期间充分地延伸到部件的工作表面下方。 为了适当地获得必要的残余应力，本发明的方法包括开发组件的模型，然后将在用加载条件应用于模型以确定部件上的使用中应力。 此后，至少一个在役应力被识别为关键的，即，确定组件的最大使用寿命的应力。 最后，制造该部件，使得在部件中产生必要的残余应力以抵消所识别的临界应力。

公开(公告)号：US4417489A

公开(公告)日：1983-11-29

申请号：US106150

申请日：1979-12-21

申请人： Chunghorng R. Liu

发明人： Chunghorng R. Liu

IPC分类号： B23Q15/16 ,  B23B1/00 ,  B23Q11/00 ,  B23Q15/013 ,  B23Q15/14 ,  B23B3/00 ,  B23B29/00

CPC分类号： B23Q17/0985 ,  B23B1/00 ,  B23Q11/0039 ,  B23Q15/013 ,  B23Q15/14 ,  B23Q17/0976 ,  G05B2219/34443 ,  G05B2219/37027 ,  G05B2219/50351 ,  Y10T82/10 ,  Y10T82/2585

摘要： A method and apparatus for machining a workpiece to perform several functions including sensing tool wear, enhancing tool life, tool wear compensation, cutting a workpiece having two different materials joined at a boundry, and suppressing chatter, including placing a cutting tool having a rake face and a clearance face with a first clearance angle with respect to a workpiece and a second clearance face with a second clearance angle with respect thereto and with the first clearance angle being less than the second clearance angle and supporting the cutting tool in a rotatable tool holder having an axis of rotation with the cutting tool tip being aligned with the axis of rotation such that rotation of the holder varies the cutting tool geometry to perform the several functions.

摘要翻译： 一种用于加工工件以执行若干功能的方法和装置，包括感测刀具磨损，提高刀具寿命，刀具磨损补偿，切割具有在边界处接合的两种不同材料的工件，以及抑制颤动，包括放置具有前刀面的切削工具 以及相对于工件具有第一间隙角的间隙面和相对于工件的第二间隙角的第二间隙面，并且第一间隙角小于第二间隙角，并且将切削工具支撑在可旋转工具架中 具有旋转轴线，其中切削工具尖端与旋转轴线对准，使得保持器的旋转改变切削刀具几何形状以执行若干功能。