Numerical control servo system
    91.
    发明授权
    Numerical control servo system 失效
    数控伺服系统

    公开(公告)号:US4130788A

    公开(公告)日:1978-12-19

    申请号:US412023

    申请日:1973-11-01

    IPC分类号: G05B19/25 G05B19/24 G05B19/40

    CPC分类号: G05B19/25

    摘要: An apparatus and method are disclosed for substantially improving the accuracy and surface finish quality of numerical control machine tool performance by generating velocity command signals for multiple axis drive systems based on the distance between the cutting tool and a point along the desired path, either the desired end point or a dynamic target which moves continuously along the desired cutting path ahead of the cutting tool.

    摘要翻译: 公开了一种用于通过基于切割工具与沿所需路径的点之间的距离产生多轴驱动系统的速度命令信号来实质提高数控机床性能的精度和表面光洁度质量的装置和方法, 终点或动态目标,其沿切割工具前方的所需切割路径连续移动。

    Teach-in method and apparatus for use in an industrial robot
    92.
    发明授权
    Teach-in method and apparatus for use in an industrial robot 失效
    用于工业机器人的教学方法和装置

    公开(公告)号:US4105937A

    公开(公告)日:1978-08-08

    申请号:US689125

    申请日:1976-05-24

    IPC分类号: G05B19/423 G05B19/24

    摘要: In a teach-in operation, the working procedure is memorized in an industrial robot in advance of the actual working operation, and the teaching is accomplished by manually guiding the tracing tip of the robot arm along a desired path. The teach-in method comprises the step of attaching, to the end of the arm, the tracing tip having at least a displacement pulse oscillator, which consists of a projector and a phototransistor, and a roller provided with gaps such as holes or slits, the projector and phototransistor being arranged in concentric positions with respect to the respective gaps of the roller so as to form an optical axis between the two optical elements. The tracing tip is then moved along a desired path, so that the location signal of the tracing tip may be obtained by the displacement pulse oscillator, whenever the roller is rotated a certain distance, as a result of the movement of the tracing tip, and such a location signal is memorized in a memory. The tracing tip is then exchanged for a working tip at the end of the arm and the location signal is played back such that the working tip is automatically traced along the predetermined desired path by the memorized location signal, whereby the velocity of the working tip is freely determined independently of the teaching velocity of the tracing tip.Also disclosed is an apparatus for practicing the foregoing teach-in method.

    摘要翻译: 在教导操作中,在实际工作操作之前将工作程序存储在工业机器人中,并且通过沿期望的路径手动引导机器人手臂的跟踪尖端来实现教学。 示教方法包括将具有至少一个由投影仪和光电晶体管组成的至少一个位移脉冲振荡器的跟踪尖端连接到臂的末端的步骤,以及设置有诸如孔或狭缝的间隙的辊, 投影仪和光电晶体管相对于辊的相应间隙布置在同心位置,以便在两个光学元件之间形成光轴。 跟踪尖端然后沿着期望的路径移动,使得随着跟踪尖端的移动,只要辊子旋转一定距离,跟踪尖端的位置信号可以由位移脉冲振荡器获得,以及 这样的位置信号被存储在存储器中。 然后在臂的末端更换跟踪尖端用于工作尖端,并且重放位置信号,使得工作尖端沿着预定的所需路径由存储的位置信号自动跟踪,由此工作尖端的速度为 独立于跟踪尖端的教学速度自由确定。

    Control apparatus for a machine tool
    94.
    发明授权
    Control apparatus for a machine tool 失效
    机床控制装置

    公开(公告)号:US4023084A

    公开(公告)日:1977-05-10

    申请号:US621077

    申请日:1975-10-09

    申请人: Kaoru Owa

    发明人: Kaoru Owa

    摘要: A control apparatus for a machine tool having a tool support supporting a tool for machining a workpiece and movable relative to the workpiece through a feed screw is disclosed. When the tool support is moved to a position in the vicinity of an original position, a signal indicator generates an output signal. In response to the output signal, one of reference pulses generated in response to the relation of the feed screw is specified to define the original position. A digital switch sets a distance between the original position and a start position. The tool support is moved toward the workpiece by the distance set by the digital switch from the original position defined by the specified reference pulse.

    摘要翻译: 公开了一种用于机床的控制装置,其具有支撑用于加工工件并且可通过进给螺杆相对于工件移动的工具的工具支撑件。 当工具支撑件移动到原始位置附近的位置时,信号指示器产生输出信号。 响应于输出信号,指定响应于进给螺杆的关系产生的参考脉冲之一以限定原始位置。 数字开关设置原始位置和起始位置之间的距离。 刀具支架通过数字开关从由指定参考脉冲定义的原始位置设定的距离向工件移动。

    Speed control system for a continuously operating sheet feeder
    95.
    发明授权
    Speed control system for a continuously operating sheet feeder 失效
    用于连续操作的送纸器的速度控制系统

    公开(公告)号:US4021710A

    公开(公告)日:1977-05-03

    申请号:US562427

    申请日:1975-03-27

    CPC分类号: B65H1/18

    摘要: The stack of sheets is moved towards the distributor at a control velocity corresponding to the distributor operation. If the stack in the operative vicinity of the distributor becomes too low, indicating too slow a stack advance, a mechanical sensor sensing the position of the top of the stack rotates to a position interrupting the signal furnished by the first and second inductive input signal generator. The interruption of the signal results in the furnishing of a second sensor output signal which, at a time determined by a synchronizing signal sets a monostable multivibrator whose output then energizes a relay which in turn applies voltage to a winding of a servomotor moving the arm of a potentiometer in a direction for increasing the speed of advance of the stack. Similarly, when the stack is too high, neither of the signals from the inductive generators is interrupted and a third sensor output signal generated in response to the presence of the two signals similarly causes the servomotor to drive the potentiometer in the opposite direction thereby retarding the speed of transport of the support means carrying the stack. Since the feeder system has first and second support means so that sheets are continuously available to the distributor means, the system also comprises a number of control switches and an additional sensor for connecting the different support means to corresponding motors and for switching the first support means from an induction motor effecting a rapid transport to a DC motor effecting the controlled transport when the stack is within a predetermined distance of the distributor means.

    摘要翻译: 以与分配器操作相对应的控制速度向分配器移动纸堆。 如果分配器操作附近的堆栈变得太低,则指示堆叠进给速度太慢,则感测堆叠顶部位置的机械传感器旋转到中断由第一和第二感应输入信号发生器提供的信号的位置 。 信号的中断导致提供第二传感器输出信号,该第二传感器输出信号在由同步信号确定的时间设置单稳态多谐振荡器,该单谐振多谐振荡器的输出然后对继电器通电,继电器继电器将电压施加到伺服电机的绕组, 一个电位计在一个方向上提高堆栈的速度。 类似地,当堆栈太高时,来自感应发电机的信号都不会中断,并且响应于两个信号的存在而产生的第三传感器输出信号类似地使得伺服电动机沿相反方向驱动电位计,从而延迟 承载栈的支撑装置的运送速度。 由于馈送系统具有第一和第二支撑装置,使得片材能够连续地可用于分配器装置,所以系统还包括多个控制开关和用于将不同的支撑装置连接到对应的电动机的附加传感器,并且用于切换第一支撑装置 来自感应电动机,当堆叠在分配器装置的预定距离内时,实现快速运送到直流电动机,从而实现受控运输。

    Machine tools
    96.
    发明授权
    Machine tools 失效
    机械工具

    公开(公告)号:US3984746A

    公开(公告)日:1976-10-05

    申请号:US478164

    申请日:1974-06-10

    IPC分类号: B23F23/00 G05B19/18 G05B19/24

    摘要: A machine for forming gears and the like comprises a workpiece support continuously rotatable about a first axis, a tool support angularly displaceable about a second axis and constructed to support a tool for rotation about a third axis angled to the first axis and an electrical master-slave servo system having a master providing a first electrical signal defining a required angular displacement for the tool support and a second electrical signal for influencing the continuous rotation of the workpiece support in dependence upon the angular displacement defined by the first signal.

    摘要翻译: 用于形成齿轮等的机器包括可围绕第一轴线连续旋转的工件支撑件,可绕第二轴线成角度地移位并被构造为支撑用于围绕与第一轴线成角度的第三轴线旋转的工具的工具支架, 从属伺服系统,其具有提供限定用于工具支撑件的所需角位移的第一电信号的第一电信号和用于根据由第一信号限定的角位移来影响工件支撑件的连续旋转的第二电信号。

    Control store system with flexible control word selection
    97.
    发明授权
    Control store system with flexible control word selection 失效
    具有灵活控制字选择的控制存储系统

    公开(公告)号:US3958227A

    公开(公告)日:1976-05-18

    申请号:US508797

    申请日:1974-09-24

    申请人: Charles W. Evans

    发明人: Charles W. Evans

    CPC分类号: G06F9/267

    摘要: A branch-address translation register (BAXR) is loaded by a current or a prior control word field. A word selection decoder circuit receives the BAXR outputs and combines them with machine-status signals to generate a word selection signal for selecting a control word from a currently accessed branch group in the control store. A BAXR switching circuit is also provided so that any control word can switch off the BAXR output and cause a control word selection without translation. The invention can obtain any required degree of addressing flexibility in microcode branch selection, i.e. from partial to total flexibility.

    Numerical control with envelope offset and automatic path segment transitions
    98.
    发明授权
    Numerical control with envelope offset and automatic path segment transitions 失效
    数字偏移和自动路径分段过渡的数值控制

    公开(公告)号:US3866179A

    公开(公告)日:1975-02-11

    申请号:US29131972

    申请日:1972-09-22

    申请人: GIDDINGS & LEWIS

    摘要: Numerical control for machine tools and the like of the genus described in McGee U.S. Pat. No. 3,656,124. Improvements are here described for digital computations and control which cause a tool or cutter to follow successive path segments programmed in workpiece edge coordinates, even though the servos operate to control the motion and positioning of the center of a cutter having a finite and unforeseeable radius. Additionally, automatic smooth transitions from segment to segment of the path are effected with a tangent fillet machined on the workpiece which has a radius equal either to that of the cutter or a value which is designated as a single numerical value in the program command data.

    摘要翻译: McGee描述的属于机器的机床等的数值控制。 3,656,124。 这里描述了对于数字计算和控制的改进,这导致工具或切割器跟随在工件边缘坐标中编程的连续路径段,即使伺服机构操作来控制具有有限和不可预见的半径的切割器的中心的运动和定位。 此外,通过在工件上加工的切线圆角实现从段到段的自动平滑过渡,该正切圆角的半径等于刀具的半径或在程序命令数据中被指定为单个数值的值。

    Control system for producing multi-axis contour movement for a stepping motor drive

    公开(公告)号:US3767990A

    公开(公告)日:1973-10-23

    申请号:US3767990D

    申请日:1972-02-09

    发明人: KREITHEN M LAWLER J

    摘要: A multi-axis machine tool or the like employing controls for an open loop stepping motor system of two or more axes in which variable frequency feedrate clock pulses are generated to ultimately control the speed of the various stepping motors. The frequency of the feedrate clock pulses is modified in accordance with programmed information; additional information defines the tool path which can either be straight line or circular arc segments and characteristically the feedrate clock pulse generation means increases pulse frequency at the beginning of a segment in such manner as to increase motor speed in accordance with system inertial limitations from a speed below to a speed above the slewing rate of the stepping motors. Thereafter upon sensing a predetermined distance from the end of the segment, pulse frequency is reduced to reduce the stepping motor speed below the slewing rate. The feedrate clock pulse chain is used by the interpolation logic to trigger two consecutive calculations, the time lapse between the clock pulse and the second calculation being so short compared to the time lapse between consecutive clock pulses, that the action initiated by the results of the calculations can be considered for all intents and purposes to be coincident with the clock pulse. The first calculation always generates a major axis interpolation pulse, during the second calculation an error accumulation register is tested to determine whether a minor axis interpolation pulse should be generated to minimize the error from the programmed path. Thus the major axis interpolation pulse chain corresponds directly to the frequency of the feedrate clock chain, the minor axis interpolation pulse chain may be irregular with respect to the chain of feedrate clock pulses. A predetermined member of interpolation pulses are then used to generate each of the major and minor axis step pulses so that any irregularity in minor axis pulse frequency is eliminated and resolution is improved.

    Cutter diameter compensation for numerical control machine tools
    100.
    发明授权
    Cutter diameter compensation for numerical control machine tools 失效
    数控机床切割直径补偿

    公开(公告)号:US3764786A

    公开(公告)日:1973-10-09

    申请号:US3764786D

    申请日:1972-05-05

    发明人: VAWTER V WILSON W

    IPC分类号: G05B19/25 G05B19/24

    CPC分类号: G05B19/251 G05B2219/50334

    摘要: Each time the rotary bit of a milling machine is sharpned, the diameter of the bit is reduced and the spindle carrying the bit must be shifted with respect to the workpiece. Where the path of the spindle is defined by a record or ''''program'''' of binary numbers on a punched tape or on a magnetic drum or disc, a different program must be composed for each bit size. This invention obviates all of the many programs and most of the computer memory storage. A program for the maximum and minimum cutter bit diamters, only, are composed and stored and the readout of these two values are combined in a fixed ratio n and applied to the controls of the machine tool.

    摘要翻译: 铣削机床的旋转钻头每次磨削时,钻头的直径就会减小,并且承载钻头的主轴必须相对于工件移动。 在主轴的路径由穿孔带或磁鼓或磁盘上的二进制数的记录或“程序”定义的情况下,必须为每个位的大小组合不同的程序。 本发明消除了所有许多程序和大多数计算机存储器存储。 仅组合并存储最大和最小切削刀头直径的程序,并将这两个值的读数以固定比率n组合并应用于机床的控制。