公开(公告)号：US5042309A

公开(公告)日：1991-08-27

申请号：US432745

申请日：1989-11-30

Applicant: Koichiro Kitamura

Inventor： Koichiro Kitamura

IPC: B23Q17/09 ,  G01L5/12

CPC classification number: G01L5/12 ,  B23Q17/0957 ,  Y10T408/172

Abstract: This invention relates to an apparatus and method for sensing a thrust load applied to a spindle of a machine tool. The object of the invention is to generate a signal representing the thrust load alone, exclusive of other forces such as frictional resistance within the spindlehead feeder, etc. so as to accurately measure the thrust load. According, to one disclosed embodiment, a first pressure sensor is arranged between a thrust bearing supporting the spindle and a surface on the spindle support and a second pressure sensor is arranged between a second surface on the spindle support and the machine tool frame. Each of the pressure sensors may be, for example, a piezo-electric film pressure sensor.

公开(公告)号：US4919575A

公开(公告)日：1990-04-24

申请号：US352470

申请日：1989-05-16

Applicant: Takani Yoshimi ,  Akihiro Matsuura ,  Toshiharu Takashima ,  Hiroyuki Nakano

Inventor： Takani Yoshimi ,  Akihiro Matsuura ,  Toshiharu Takashima ,  Hiroyuki Nakano

IPC: G05B19/404

CPC classification number: G05B19/404 ,  G05B2219/37096 ,  G05B2219/41164 ,  G05B2219/41165 ,  G05B2219/49207 ,  Y10T408/172 ,  Y10T408/175 ,  Y10T409/309352

Abstract: A thermal displacement compensating apparatus capable of compensating for the thermal displacement of the main spindle of a machine tool is disclosed. A feed back scale and a measuring head are provided in order to detect the actual position of the front end portion of the spindle head. Furthermore, a distance sensor is provided for detecting the thermal extension of the main spindle with respect to the spindle head. The output signal from the distance sensor is used for modifying the present position detected by the measuring head or modifying a commanded target position. With this arrangement, a tool attached to the front end portion of the main spindle is moved to the commanded position regardless of the thermal displacement of the spindle head and the main spindle. Another type of compensation apparatus is also disclosed, wherein the measuring head is mounted on a mounting rod, and the mounting rod is automatically moved so as to maintain the distance between the measuring head and the front end surface of the main spindle at a constant distance. With this arrangement, actual position of the front end surface of the main spindle can directly be detected regardless of the thermal displacement of the spindle head and the main spindle.

公开(公告)号：US4789943A

公开(公告)日：1988-12-06

申请号：US921340

申请日：1986-10-20

Applicant: Mamoru Yamanaka ,  Masahiko Sugimura

Inventor： Mamoru Yamanaka ,  Masahiko Sugimura

IPC: B23G1/02 ,  G05B19/18 ,  G06F15/46

CPC classification number: G05B19/186 ,  Y10T408/172 ,  Y10T82/20 ,  Y10T82/2502

Abstract: There is provided a thread cutting control method in an NC apparatus having a CPU in an arithmetic unit whereby real time clocks which are generated for every constant time are received as an interruption signal and a sampling operation is performed in response to the interruption signal, thereby controlling the feed system of a machine tool having a thread cutting function. In this system, the rotational speed of a spindle which is rotating asynchronously with the real time clocks is measured; the rotational amount of the spindle from a predetermined position on the rotational position of the spindle until the real time clock is just generated is measured; and after a feed system adapted to perform a thread cutting work on the basis of the rotational amount and the rotational speed has moved by a predetermined distance, a feed command to control the feed system is generated such that the movement distance is constant for the position of the spindle and at the same time, a predetermined ratio is held between the feed speed of the feed system and the rotational speed of the spindle. With this system, the feed shaft to cut the thread lead can be controlled with a high degree of accuracy.

Abstract translation: 在具有在运算单元中的CPU的NC装置中提供了一种切线控制方法，从而接收每个恒定时间产生的实时时钟作为中断信号，并且响应于该中断信号执行采样操作，从而 控制具有切线功能的机床的进给系统。 在该系统中，测量与实时时钟异步旋转的主轴的转速; 测量从主轴的旋转位置的预定位置直到实时时钟恰好产生的主轴的旋转量; 并且在适于基于旋转量进行螺纹切削加工的进给系统已经移动预定距离之后，产生用于控制进给系统的进给命令，使得运动距离对于该位置是恒定的 并且同时在进给系统的进给速度和主轴的转速之间保持预定的比例。 利用该系统，可以高精度地控制用于切割螺纹引线的进给轴。

公开(公告)号：US4786220A

公开(公告)日：1988-11-22

申请号：US53643

申请日：1987-05-26

Applicant: John M. Fildes ,  Robert H. Krueger

Inventor： John M. Fildes ,  Robert H. Krueger

IPC: B23B47/24 ,  B23Q17/09 ,  G05B19/4065 ,  B23C7/00 ,  B23B49/00

CPC classification number: G01N3/58 ,  B23B47/32 ,  B23Q17/0957 ,  G01N3/56 ,  G05B19/4065 ,  G05B2219/37252 ,  G05B2219/37382 ,  G05B2219/37536 ,  Y10T408/172 ,  Y10T409/30392 ,  Y10T409/30728

Abstract: A method and apparatus by which the degree of wear and useful life limitations of a drill, end mill or other types of metal removal tools can be detected. The method is based on the short circuit current, open circuit voltage and/or power that is generated during metal removal by the utilization of an insulated rotary tool bit to which electrical contact is made by a non-rotating conductor and an insulated or non-insulated workpiece, with an external circuit connecting the tool and workpiece through a measuring device. The generated current, voltage or power shows a sharp increase or change in slope upon considerable tool wear and/or at the point of failure.

Abstract translation: 可以检测钻头，立铣刀或其他类型的金属去除工具的磨损程度和使用寿命限制的方法和装置。 该方法基于通过利用由非旋转导体和非绝缘或非绝缘材料制成的电接触的绝缘旋转工具钻头在金属去除期间产生的短路电流，开路电压和/或功率， 绝缘工件，外部电路通过测量装置连接工具和工件。 所产生的电流，电压或功率在相当大的刀具磨损和/或故障点处显示出急剧增加或斜率变化。

公开(公告)号：US4571687A

公开(公告)日：1986-02-18

申请号：US395081

申请日：1982-06-14

Applicant: Hiroomi Fukuyama ,  Shinichi Isobe

Inventor： Hiroomi Fukuyama ,  Shinichi Isobe

IPC: B23G1/16 ,  G05B19/18 ,  G06F15/46

CPC classification number: B23G1/16 ,  G05B19/186 ,  G05B2219/45216 ,  Y10T408/172 ,  Y10T82/25

Abstract: The present invention increases screw cutting accuracy and simplifies the control of a screw cutting control system which performs screw cutting through the use of a numerically-controlled machine tool. A tapper (TPP) connected to a spindle, holds a tap (TAP) in a manner to be movable in the axial direction of the spindle, transmits the rotation of the spindle to the tap (TAP) for a predetermined range of forward axial movement of the tap (TAP) and transmits the rotation of the spindle to the tap (TAP) when the spindle is reversed. During screw cutting, feed by a feed motor (SZ) stops after the tap (TAP) enters a workpiece and the screw cutting is effected by the thrust of the tap itself resulting from the rotation of the spindle. The sequence of screw cutting is commanded by one block of command data.

Abstract translation: PCT No.PCT / JP81 / 00288 Sec。 371日期1982年6月14日 102（e）日期1982年6月14日PCT提交1981年10月16日PCT公布。 出版物WO82 / 01336 日本1982年4月29日。本发明提高了螺丝切割精度，简化了通过使用数控机床执行螺旋切割的螺旋切割控制系统的控制。 连接到主轴的分接器（TPP）以能够在主轴的轴向方向上移动的方式保持分接头（TAP），将主轴的旋转传递到分接头（TAP）一定范围的向前轴向移动 （TAP），并且当主轴反转时，将主轴的旋转传递到龙头（TAP）。 在螺旋切割期间，进给马达（SZ）进给后，分接头（TAP）进入工件后停止，螺丝切割由主轴旋转引起的丝锥本身的推力进行。 螺旋切割的顺序由一个命令数据块命令。

公开(公告)号：US4420253A

公开(公告)日：1983-12-13

申请号：US323397

申请日：1981-11-20

Applicant: Timothy R. Pryor

Inventor： Timothy R. Pryor

IPC: B23Q17/09 ,  B23Q17/24 ,  E21B12/02 ,  G01M11/08 ,  G01N21/00 ,  B23B39/00 ,  G02B5/14

CPC classification number: G01M11/086 ,  B23Q17/0928 ,  B23Q17/0957 ,  B23Q17/24 ,  E21B12/02 ,  Y10T408/172 ,  Y10T408/21 ,  Y10T409/30392

Abstract: To determine whether an object, such as a tool, is worn or broken, there is embedded in the object an elongate fiber optic. One end of the fiber optic is at a surface of the object and such that a second, light emitting end of said fiber optic is located within the body of said object and spaced a distance from a further surface of the object, such that a portion of the object overlies the other end. When the object is broken or worn to such an extent that the other end of the fiber optic is exposed, light directed at the first mentioned end of the fiber optic will be detectable at the other end. Thus, by directing light onto the one end, and by detecting any light emitted at the second end, a worn or broken object is readily detected. The invention has particular use in the automatic inspection of tools in automated manufacturing.

Abstract translation: 为了确定诸如工具的物体是否磨损或破损，在物体中嵌入细长的光纤。 光纤的一端位于物体的表面，并且使得所述光纤的第二发光端位于所述物体的主体内并与物体的另一表面隔开一段距离，使得部分 的对象覆盖在另一端。 当物体破裂或磨损到光纤的另一端被暴露的程度时，指向光纤的第一个提到端的光将在另一端检测。 因此，通过将光引导到一端，并且通过检测在第二端发射的任何光，容易检测到磨损或破裂的物体。 本发明特别用于自动化制造中的工具的自动检查。

公开(公告)号：US4371040A

公开(公告)日：1983-02-01

申请号：US296369

申请日：1981-08-26

Applicant: William C. Orthwein

Inventor： William C. Orthwein

IPC: E21D20/00 ,  B23Q15/00

CPC classification number: E21D20/003 ,  Y10T408/14 ,  Y10T408/172

Abstract: The invention comprises generally apparatus for use with an underground mine-shaft roof-bolting machine having a torque motor, a pinning rod held for rotation by the torque motor, a controllable arrangement for exerting upward thrust on the torque motor to force the pinning rod upwardly into the roof of a mine shaft, and a manual control for the upward thrust arrangement. The invention utilizes a light beam to detect buckling of the pinning rod and to disable the upward thrust arrangement.

Abstract translation: 本发明通常包括一种与地下矿井车顶螺栓连接机一起使用的装置，其具有扭矩马达，由扭矩马达保持旋转的钉扎杆，用于向扭矩马达上施加向上推力以将钉扎杆向上施力的可控布置 进入矿井的屋顶，以及用于向上推力装置的手动控制。 本发明利用光束来检测钉扎杆的弯曲并且禁止向上的推力装置。

公开(公告)号：US4351029A

公开(公告)日：1982-09-21

申请号：US100674

申请日：1979-12-05

Applicant: Robert E. L. Maxey ,  James N. Brecker

Inventor： Robert E. L. Maxey ,  James N. Brecker

IPC: G01N3/58 ,  G05B19/4065 ,  G06F15/46 ,  G01N19/02

CPC classification number: G05B19/4065 ,  G01N3/58 ,  G05B2219/37252 ,  Y10T408/172

Abstract: Net power consumed by one or more tools, continuously or intermittently is totalized and compared with a predetermined energy limit characterizing the life expectancy of a tool for optimum and safe use on a machine tool. Digital and computer techniques are used in order to keep track of the usage of the various tools within their respective life expectancies.

Abstract translation: 由一个或多个工具连续或间歇地消耗的净功率被累计，并与表征工具的预期寿命的预定能量极限进行比较，以在机床上实现最佳和安全的使用。 使用数字和计算机技术来跟踪在各自预期寿命期间各种工具的使用。

公开(公告)号：US4304510A

公开(公告)日：1981-12-08

申请号：US86825

申请日：1979-10-22

Applicant: Kenji Machida

Inventor： Kenji Machida

IPC: B23B47/24 ,  B23Q11/04 ,  F16D7/04

CPC classification number: F16D7/04 ,  B23Q11/04 ,  Y10T408/14 ,  Y10T408/172 ,  Y10T408/21 ,  Y10T408/72

Abstract: A critical torque detector is disclosed made up of a rotating input member, an output member supporting a drill and connected in a "flexible driving connection" with the input rotating member, and means for detecting difference in rotational speed between the input and output members due to a greater torsional resistance encountered by the drill during its operation than the critical torque predetermined for a specific drill. The input and output members are drivingly connected, as by a coil spring, magnetic repelling forces and so on, so as to rotate conjointly whenever a torsional resistance or a torque encountered by a running drill is lower than the predetermined value, but they are not always rigidly connected. Upon occurrence of greater torque imposed on the drill, the output member will be permitted to delay in rotation as compared to the input member. Such difference in rotational speed can be taken out mechanically or electromagnetically as a signal to detect occurrence of the critical torque.

公开(公告)号：US4180356A

公开(公告)日：1979-12-25

申请号：US930699

申请日：1978-08-03

Applicant: Norman J. Hoch

Inventor： Norman J. Hoch

IPC: B23B47/24 ,  B23B49/00 ,  B23B39/04 ,  B23B39/00

CPC classification number: B23B49/001 ,  Y10T408/15 ,  Y10T408/16 ,  Y10T408/172

Abstract: A detecting apparatus for machine tools with rotating spindles having adapter for holding tools such that when any of the tools engage an obstacle such as another broken tool or a workpiece, a signal is generated and is transmitted to a timer activated for predetermined periods of time during selected phases of operation. The timer is responsive to the presence or to the absence of a signal during its active period to continue or to discontinue the cycle of machining operations.

Abstract translation: 一种用于具有旋转主轴的机床的检测装置，其具有用于保持工具的适配器，使得当任何工具接合诸如另一个破碎的工具或工件的障碍物时，产生信号并将其发送到在预定时间段内激活预定时间段的定时器 选定的操作阶段。 定时器响应于在其活动期间存在或不存在信号以继续或停止加工操作的循环。