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。

公开(公告)号：US4078195A

公开(公告)日：1978-03-07

申请号：US648640

申请日：1976-01-13

申请人： Richard A. Mathias ,  Lyle C. Adams ,  Edward N. Miller

发明人： Richard A. Mathias ,  Lyle C. Adams ,  Edward N. Miller

IPC分类号： G05B19/416 ,  G05B13/00

CPC分类号： G05B19/4163

摘要： Prior art adaptive control systems for numerically-controlled milling machines are first discussed in which N/C instructions and adaptive control system data are obtained and stored in a storage medium utilizing a software routine which takes into consideration parameters of the milling process and parameters of a specific milling machine. The instructions and data command, for sequential steps in the milling process, such items as spindle position, feedrate and reference milling forces and are supplied to an N/C unit and to the adaptive control system at the milling machine to automatically control the milling process. The adaptive control system includes a milling force sensor and functions to override the commanded feedrate on comparison of the actual milling forces during the process with the reference milling forces. An improvement is then discussed which modifies the adaptive control system data so that the data can be used on any milling machine having an N/C unit capable of responding to the N/C storage medium in which the N/C instructions and adaptive control system data are stored. A set of universal adaptive control variables are included in the adaptive control data. The adaptive control system at the milling machine is modified to respond to these universal adaptive control variables and further to internally store machine constants for the specific milling machine with which the adaptive control system is utilized. The improved adaptive control system then recomputes the adaptive control data including reference milling forces in accordance with the universal adaptive control variables and the machine constants and utilizes the recomputed adaptive control system data to override where necessary the commanded feedrate. In addition, provision is made in the improved adaptive control system for further modifying the adaptive control system data by operator-entered manual process control inputs. Applications of such improved adaptive control systems to numerically-controlled machine tools other than milling machines are also discussed.

公开(公告)号：US4563906A

公开(公告)日：1986-01-14

申请号：US554600

申请日：1983-11-23

申请人： Richard A. Mathias

发明人： Richard A. Mathias

IPC分类号： G01L1/02 ,  G01L5/16 ,  G01L9/00

CPC分类号： G01L9/0041 ,  G01L1/02 ,  G01L5/16

摘要： The load measurement apparatus includes a pressure arm 60 rigidly coupled to a structural member whose load is to be measured, and a miniature instrumented hydrostatic cell rigidly mounted in proximity to the pressure arm so that a membrane of the cell engages the pressure arm and displaces as the pressure arm displaces. In one embodiment, the cell includes a housing consisting of a first cylindrical portion 20 and a second cylindrical portion 22 integral with and centrally projecting from the first cylindrical portion. A cylindrical cavity 24 is formed within the housing portions and coaxial therewith. At one end, the cavity is closed by a thin membrane 26, and at its other end, the cavity communicates with a threaded bore that receives and is closed by female portion 34 and male portion 36 of a seal. A temperature compensation insert 30 is disposed within the cavity, and the portions of the cavity not occupied by the insert are completely filled with an incompressible fluid that is introduced through the seal. The pressure within the cavity is measured by a pressure transducer 50. The cell is disposed within a cavity of a receptacle member 64 and the membrane thereof is urged into engagement with a sphere 66 embedded in the pressure arm by a pair of Belleville disc springs 72, 74 disposed within the receptacle member cavity and by an adjustment plug 78 threadably received in that cavity.

摘要翻译： 负载测量装置包括刚性耦合到其负载被测量的结构构件的压力臂60以及刚刚安装在压力臂附近的微型仪表静压单元，使得电池的膜与压力臂接合并且作为 压力臂移位。 在一个实施例中，电池包括由第一圆柱形部分20和与第一圆柱形部分一体并且从第一圆柱形部分中心突出的第二圆柱形部分22组成的壳体。 圆柱形空腔24形成在壳体部分内并与其同轴。 在一端，空腔被薄膜26封闭，并且在其另一端处，空腔与螺纹孔连通，该螺纹孔由密封件的阴部分34和凸形部分36接收并闭合。 温度补偿插入件30设置在空腔内，并且未被插入件占据的腔的部分完全填充有通过密封件引入的不可压缩流体。 空腔内的压力由压力传感器50测量。电池设置在容器构件64的空腔内，并且其膜被一对Belleville碟形弹簧72推动与嵌入压力臂中的球体66接合 74设置在容器构件空腔内，以及通过螺纹地容纳在该空腔中的调节塞78。