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63 条记录 (耗时 0.019 秒)

    Flexure-based dynamometer for determining cutting force
    6.
    发明授权
    Flexure-based dynamometer for determining cutting force 失效
    用于确定切削力的基于挠曲的测力计

    公开(公告)号：US07536924B2

    公开(公告)日：2009-05-26

    申请号：US11576200

    申请日：2005-09-29

    申请人： Tony Lavaun Schmitz ,  Gregory Scott Duncan ,  John Charles Ziegert ,  David Corbin Burton

    发明人： Tony Lavaun Schmitz ,  Gregory Scott Duncan ,  John Charles Ziegert ,  David Corbin Burton

    IPC分类号： G01L25/00 ,  G01L5/10 ,  G01L1/10

    CPC分类号： G01L1/10 ,  B23Q17/0971 ,  B23Q17/12

    摘要： A high frequency flexure-based dynamometer for measuring vibrations to use in determining cutting forces in a tool is disclosed. The dynamometer device may operate within a pre-selected high frequency range while measuring cutting forces less than about 1 N. The dynamometer may include two coupled flexures that interact to produce vibration modes at the edge of a selected bandwidth of interest. These modes may produce a frequency response function within the desired frequency band that has a magnified response and is substantially constant. The dynamometer may include a workpiece mounted to one of the two flexures and a one or more precision accelerometers mounted to the first or second flexures. Finite element analysis may be used to optimize the flexure design.

    摘要翻译： 公开了一种用于测量用于确定刀具中的切削力的振动的高频挠曲力测力计。 测力计装置可以在测量小于约1N的切割力的同时在预选的高频范围内操作。测力计可以包括两个耦合的弯曲件，其相互作用以在所选择的所选带宽的边缘处产生振动模式。 这些模式可以在具有放大响应并且基本上恒定的期望频带内产生频率响应函数。 测力计可以包括安装到两个挠曲件之一的工件和安装到第一或第二挠曲件上的一个或多个精密加速度计。 有限元分析可用于优化弯曲设计。

    Apparatus for monitoring tool life
    7.
    发明授权
    Apparatus for monitoring tool life 失效
    用于监测刀具寿命的装置

    公开(公告)号：US4563897A

    公开(公告)日：1986-01-14

    申请号：US570180

    申请日：1984-01-12

    申请人： Arthur I. W. Moore

    发明人： Arthur I. W. Moore

    IPC分类号： G01N3/58 ,  G05B19/4065 ,  G01N29/04

    CPC分类号： G05B19/4065 ,  B23Q17/0971 ,  G01N3/58 ,  G05B2219/37004 ,  G05B2219/37242 ,  G05B2219/37432 ,  G05B2219/37433 ,  G05B2219/37434 ,  G05B2219/37493 ,  G05B2219/37498 ,  G05B2219/37544 ,  G05B2219/37545 ,  G05B2219/50008

    摘要： A system for monitoring the vibration of a power driven cutting tool during machining first produces a signal proportional to the vibration spectrum of the tool over a preselected band width. This is passed through a digitally controlled attenuator which is adjusted to provide an output signal at a preselected level. The degree of attenuation is stored, as is a reference value which is generated as a function of the attenuated signal. Then, during subsequent machining operations under the same machining conditions the attenuator is controlled to provide the same degree of attenuation and the reference value, which is in the form of a digital signal, is compared with the rectified and digitized output of the attenuator. When the latter exceeds the reference value a control signal is generated which either provides an audible or visual warning that the cutting tool is worn and therefore due for replacement or initiates an automatic tool changing operation. The system effectively monitors the wear of the tool and, in providing its own reference, i.e. the reference value which is generated, caters automatically for changes in the machining conditions such as use of a different tool or change in workpiece material.

    摘要翻译： 用于在加工期间监测动力驱动的切削工具的振动的系统首先在预选的带宽上产生与工具的振动频谱成比例的信号。 这通过一个数字控制的衰减器，该衰减器被调节以提供预选电平的输出信号。 存储衰减程度，作为衰减信号的函数产生的参考值。 然后，在相同加工条件下的后续加工操作中，衰减器被控制以提供相同程度的衰减，并且以数字信号的形式将参考值与衰减器的整流和数字化输出进行比较。 当后者超过参考值时，产生控制信号，其提供切割工具被磨损的可听或视觉警告，因此由于更换或启动自动换刀操作。 该系统有效地监测工具的磨损，并且在提供其自身参考时，即产生的参考值，自动适应加工条件的变化，例如使用不同的工具或工件材料的变化。

    Force and torque sensor for machine tools
    8.
    发明授权
    Force and torque sensor for machine tools 失效
    用于机床的力矩传感器

    公开(公告)号：US4444061A

    公开(公告)日：1984-04-24

    申请号：US362451

    申请日：1982-03-26

    申请人： Richard A. Mathias

    发明人： Richard A. Mathias

    IPC分类号： G01L5/00 ,  B23Q17/00 ,  B23Q17/09 ,  G01L1/02 ,  G01L5/16 ,  G01L5/22 ,  G01N3/00 ,  G01N3/58

    CPC分类号： G01L5/16 ,  B23Q11/04 ,  B23Q17/0909 ,  B23Q17/0971 ,  G01L1/02 ,  G01L5/226 ,  G01N3/58 ,  G01N2203/0019 ,  G01N2203/0623

    摘要： The sensor includes at least one pressure chamber that is filled with an incompressible fluid, a membrane that forms at least one wall of the pressure chamber, a pressure transducer measuring the pressure within the pressure chamber, and a pressure arm whose first end is secured to a machine tool member at a location at which force and torque are to be measured and whose second end bears on the membrane. By appropriately choosing the number and disposition of pressure chambers, membranes, and pressure arms, output signals from the corresponding pressure transducers are related to selected components of transverse force torque, and axial force of the machine tool member. Various embodiments of the sensor for use with machine tools having a rotating tool and machine tools having a stationary tool are disclosed, and techniques are described in which these embodiments can be used to determine the angle between transverse force exerted on the machine tool member and a stationary axis of the machine tool, to determine the plane of transverse loading of the transverse force, and to compensate the pressure measurements in accordance with the determined plane of transverse loading.

    摘要翻译： 传感器包括至少一个填充有不可压缩流体的压力室，形成压力室的至少一个壁的膜，测量压力室内的压力的压力传感器，以及压力臂，其第一端固定到 在要测量力和扭矩并且其第二端承载在膜上的位置处的机床构件。 通过适当选择压力室，膜和压力臂的数量和配置，来自相应的压力传感器的输出信号与横向力矩的选定部件和机床构件的轴向力相关。 公开了用于具有旋转工具的机床和具有固定工具的机床的传感器的各种实施例，并且描述了这些实施例可以用于确定施加在机床构件上的横向力与 确定横向力的横向载荷平面，并根据确定的横向载荷平面补偿压力测量值。