Matches 351 - 400 out of 545 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
4852434 Machine tool with a sliding screw drive  
A machine tool having a work spindle with an electrically actuated clamping unit including a three-phase motor with a stationary stator. The motor is supplied with electricity from a control unit...
4841211 Metering method of injection molding machine  
A metering method for an injection molding machine, which drives a screw with a servo motor in the axial direction to perform injection including the step of applying a back pressure during...
4833630 Method and apparatus for the tridimensional measuring of an object  
A method and apparatus provides a three dimensional measurement of a point on an object. A surface with a system for detecting the position of sensors is placed adjacent to the surface and an...
4825055 Error-free integration pointing and tracking  
An error-free pointing and tracking system is disclosed which separates the functions of pointing and tracking. Beginning with an initialized trajectory for an object, a sensor is positioned and...
4818925 Device for setting the working point of a tool in an NC machine tool  
Device for setting the working point of a tool with respect to a reference point in an NC machine tool with a tool slide system and a path measuring system for the tool slide motion which is...
4816731 Honing machine  
A honing machine in which a micro-processor controls reciprocation with respect to a work-piece of a spindle which carries honing stones, the micro-processor being associated with a memory unit...
4814681 Rotary body position control apparatus  
A rotary shaft position control apparatus in which the rotary shaft is stopped in one revolution. After detection that a flux emitter on the shaft has passed a position detector, the shaft speed is...
4807145 Method and apparatus for measuring the shape, size, etc., of a rotary tool  
An apparatus for measuring the shape and size of a rotary tool is provided which includes a tool rotation unit for rotating the tool around the tool axis, a tool moving mechanism for moving the...
4805049 Positioning device for an automatic changing apparatus employing and absolute encoder  
An automatic changing apparatus includes a holder portion for storing a number of optical disks and a carriage for transferring a desired disk in the holder portion to a disk drive device. The...
4794311 Numerical control system  
In a numerical control system for a machine tool using a general-purpose motor (11) in place of at least one of servo motors, a current position of a spindle (10) driven by the general-purpose...
4791342 Numerical control device  
In a numerical control device for machine tools, a tool path is determined for a workpiece according to the machining data, and is divided into machining units, and the amount of machining for each...
4791575 Method for generating axis control data for use in controlling a grinding machine and the like and system therefor  
The cam lift data is analyzed (110) through the use of a fast fourier transform (FFT) (116) to thereby obtain FFT coefficients (118) which define the amplitude and frequency content of the cam lift...
4783617 Method of restoring a rotary axis to a reference point  
The present invention relates to a method of restoring a rotary axis to a reference point. A workpiece coordinate system serving as a programming reference with respect to a machine coordinate...
4769583 Motion control system with minimum time path generation  
A minimum time path generation routine for a motion control system, where the routine is uniquely adapted for use in a digital mechanization.
4761595 Motion control system having adaptive feedforward path tracking  
A feedforward path following routine for a motion control system, where the feedforward parameters are adaptively adjusted in real time during system operation for substantially error-free tracking...
4706002 Numerical control unit  
A numerical control unit includes a program creating device (TPC) having an input device (104) for entering data for the creation of a machining program. A processor (101) creates a machining...
4697125 Method and apparatus for determining shaft position and for providing commutation signals  
The invention provides a method and apparatus for determining the angular displacement of a rotating shaft, and for commutation of a brushless motor. At least two analog sensors, mounted near the...
4694233 Numerical control apparatus for machine  
A numerical control apparatus for controlling a machine which includes a movable element and a servomotor for moving the element. The numerical control apparatus includes memory means for storing...
4692872 Numerical control system with plural groups of miscellaneous functions  
A numerical control system of a machine tool or the like has a numerical control section and a programmable controller section for executing sequential control of a machine based on control signals...
4692856 Position control of multiple tools based on elapsed time of tool operation  
A numerical control method for numerically controlling a machine tool such as a multi-spindle lathe having two or more tools (TL 1 , TL 2 , TL 3 ). The numerical control method has steps of...
4684861 Interface unit between a numerical controller and an electric power control circuit  
An interface unit is connected beween a numerical controller (NC) and an electric power control circuit (PC). The interface unit includes an actual speed memory (50) into which the numerical...
4675490 Method and apparatus for controlling electrode position in an electric discharge machine by counting feedback pulses and repeatedly adding the count  
A method and apparatus for controlling an electric discharge machine wherein a motor for establishing relative movement between an energized electrode and a workpiece is driven in accordance to...
4643622 Automatic C-axis feedrate control for machine tools  
A machine tool is provided with a controller for computing, as a function of an established radius and a preset feedrate, a rotational speed for rotating the machine spindle to provide a uniform...
4638228 Digitally controlled analog operating control system, and method  
To increase the resolution of digital words, for example eight-bit words, being supplied via a digital/analog (D/A) converter (2) to a closed control loop, the lowest-order bit (2a) is chopped with...
4638230 Bang-bang controlled velocity command generator  
In a disc information storage system which employs a servo data disc, a servo data head and a moveable carriage assembly for transporting a plurality of magnetic heads radially across the surface...
4631465 Tool display system of automatic tool changing apparatus  
A tool display system of an automatic tool changing apparatus (31) in a machine tool (30) sequentially controlled by a programmable controller (20) on the basis of a control signal from a numerical...
4617504 Positioning device  
The invention relates to an adaptive control tool holder for fixing to the end of the carrier of a robot, controlling the displacement of said end in accordance with a stored path. The tool holder...
4611156 Method and apparatus for determining the position or dimensions of a test object  
An improved apparatus and process for sensing a test object by means of a switching sensor which is movable relative to the test object, in which the relative position between the test object and...
4607327 Modular numerical control system with automatic programming function  
A numerical control system having an automatic programming unit for executing automatic programming, and a numerical control unit for executing numerical control. A single operator's panel having...
4600869 Method and device for inputting co-ordinates for robot  
A method and a device for inputting the coordinates of a robot acts so that the coordinates are input accurately by scanning the working area of the robot and inputting, as coordinates of the...
4591771 Numerical control system  
In order to permit manual operation under a condition where the axial direction of a tool and the direction of a hole to be machined in a workpiece are held in agreement, the tool of a radius γ is...
4587622 Method and apparatus for determining and correcting guidance errors  
Two methods are disclosed for eliminating the influence of guidance errors on the precision of determining the position of guided machine parts as in a coordinate-measuring machine, whereby the...
4564911 Method of monitoring a cutting tool by recognizing a sensed deviation in a mathematically smoothed function of force  
A method of monitoring the performance of a cutting tool which moves relative to a workpiece through a cycle includes the steps of dividing the cycle into a plurality of increments, sensing a...
4558419 Method of judging and controlling simultaneous machining in a quadriaxial numerical control lathe  
A method of judging and controlling simultaneous machining in a quadriaxial numerical control lathe having two tool rests. A machining pattern pair memory stores a pair table showing possibility of...
4556834 Numerically controlled pattern cutting machine for glass panes  
A system for control of movement of a cross sled which follows movement in an X-Y coordinate system according to a stored program, and for extending or shortening the path of movement either in the...
4553077 Industrial robot  
An industrial robot has a control system with a program memory. During programming, the robot is manually controlled to a sequence of desired positions. At each position, an operating member may be...
4550375 Machining system with operating mode selectors provided in machine controller of each NC machine tool  
A machining system for controlling the operation of a plurality of NC machine tools with a master controller, which is provided with an operation mode selector in a machine controller of each NC...
4547844 Shelf height selector  
A shelf height selector system for a lift truck provides signals to an operator as he raises or lowers a load carriage relative to a storage shelf level selected by a keyboard in order to perform a...
4545174 Timing adjusting device for packaging machines  
A packaging machine wraps an article with a web of patterned wrapping paper as it is continuously formed into a sleeve, and seals or cuts or both seals and cuts the front and rear ends of a sleeve...
4543636 Numerically controlled machine tool system capable of setting up tools into tool magazine  
A numerically controlled machine tool system having a tool transfer device which, with a change in the kind of workpieces to be machined in a numerically controlled machine tool, operates to...
4539634 Modification of machining program in a numerical control machine tool  
A numerical control machine tool is adapted to operate in accordance with a machining program stored in a memory. The numerical control machine tool is provided with a program amendment command...
4521721 Numerical control method  
Disclosed is a numerical control method for positionally controlling a movable element of a machine tool in such a manner that numerically controlled machining is performed along a projected path...
4504772 Method of sensing current position in position control system  
A method of sensing the current position of a movable element in a position control system which includes first and second control devices each having command pulse generating means and error...
4502125 Numerical controller for an angular slide grinding machine  
A numerical controller for an angular slide grinding machine capable of controlling movement of a work table with a dressing tool in a machine coordinate system in a dressing operation and a...
4499546 Numerical control machine tool with sliding error compensation function  
In a numerical control machine tool, the sliding errors are compensated by control means comprising: a position detector for detecting a current position on a first axis at all times in association...
4485338 Method and apparatus for sensing current position in position control system  
A method and apparatus for sensing the current position of a movable element in a position control system which includes first and second control devices each having a command pulse generating...
4477754 Interactive machining system  
A microprocessor numerical control for a milling machine including means for programming part features by the machine operator at the machine location. The control apparatus includes a CRT display...
4435771 System for numerically controlling a machine tool  
A system for numerically controlling a machine tool comprising a plurality of machine tools, a plurality of numerical control circuits and a computer as an entirely automatic operation commander...
4384334 Apparatus for driving pulse motors for automatically adjusting external circuits  
A plurality of pulse motors (225X, 225Y, 225Z) can rotate driver devices (222X, 222Y, 222Z). The driver devices are fitted in the parts of, for example, a horizontal oscillation circuit, a vertical...
RE31208 Signal modification device for memory controlled manipulator apparatus  
The invention discloses a digital position instruction signal modification device for use with a memory controlled manipulator apparatus of the type in which, during a teaching operation, a desired...
Matches 351 - 400 out of 545 < 1 2 3 4 5 6 7 8 9 10 11 >