Matches 201 - 240 out of 240 < 1 2 3 4 5
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4789943 Thread cutting control method  
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...
4743900 Device for releasing control signals for a machine tool  
An electronic cam switching mechanism is used instead of a mechanical cam switching mechanism of a stamping machine or press. The former comprises a write/read memory which conducts track-wise...
4725959 Numerically controlled machine tool  
The present invention is intended to decrease the number of signal lines between a machine tool (1) and a numerical controller (3) and enable the current position of a movable machine part to be...
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...
4670849 Position error correcting method and apparatus for industrial robot  
A position error correcting method and apparatus suitable for operating an industrial robot with high accuracy, in which, after the industrial robot disposed on a working site is moved according to...
4669041 Blank profile specifying method  
A blank profile specifying method in automatic programming for lathes has a step of specifying a finished profile (1), a step of entering a maximum length (L m ) and a maximum diameter (F m ) of a...
4664570 Method of operating a numerically controlled machine tool having a worktable capable of rotation about two intersecting axes  
A method of working on a sloping surface of work is disclosed by means of a numerically controlled machine tool comprising a cutting tool carried by a spindle movable along three orthogonal axes,...
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...
4638421 Position feedback system  
A position feedback system capable of effectively preventing an NC apparatus from failing in a position signal reading operation due to mechanical vibration of a machine tool or the like, including...
4584509 Method of discriminating present position region of a machine  
A machine present position region discrimination method divides a stroke, over which a movable portion of a machine travels along a single controlled axis, into n equal parts to partition the...
4584638 Numerical control apparatus  
A numerical control apparatus having an improved range of control functions and in which the management and use of the control program can be more easily performed. In accordance with the...
4576546 Method for servicing a steam generator  
A servicing machine for a steam generator is accurately set up in the generator channel head with a pivoted arm mounted for rotation in a plane parallel to the tubesheet. The angular position of...
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...
4527244 Electro-hydraulic position control for a machine tool with actual and commanded position feedback  
An automated control system and method for control of hydraulically positionable machine tools is disclosed. A servo motor is coupled to a servo valve spool such that the angular displacement of...
4495561 Numerical control method  
Disclosed is a numerical control method for a numerical control (NC) system having a device to execute a mirror image function wherein the moving direction of a movable member is reversed with...
4494206 Control device for indexing a stepping rotatable member  
A control device for indexing a stepping rotatable member, such as a turret of an NC lathe, comprising a means for generating code signals which generates different code signals at every stop...
4485453 Device and method for determining the location and orientation of a drillhole  
A drillhole centerline determining interposer having a central cavity enables a robot to probe the interposer to learn the location and orientation of the desired drillhole. The interposer is a...
4433382 Apparatus for automatically adjusting the programmed location of a robot arm  
Apparatus for adjusting the position of a robot arm in response to coordinate data supplied by an external user process control. During the execution of a programmed cycle of operation, a robot...
4424569 Method and apparatus for a numerical control device for controlling a machining device having a plurality of tools  
A method and apparatus for numerically controlling a machine tool having at least two tools which are arranged to move in unison with a constant position relationship with respect to one another,...
4415967 Multi-axis controller  
A mechanical element is moved from a first position to a second position along a vector path. Individual step controllers provide drive along each axis at respective velocities for vector movement....
4401930 Method of sensing position of movable body and apparatus therefor  
The present invention relates to improvements in a method of sensing a position of a movable body by directly or indirectly converting a unit movement of the movable body into digital pulse signals...
4365300 Method and apparatus for vector machine control  
A method and apparatus for vector machine control of a tool and a workpiece so as to perform desired electric discharge machine (EDM) operations on the workpiece in accordance with a polar...
4271471 Method of operating a remotely controlled tool positioning table  
A steam generator tubesheet is serviced by end effectors mounted on a slew table cantilevered from a carriage slidable along an arm rotatable in a plane parallel to the tubesheet. In servicing a...
4257103 Apparatus for controlling position of a plurality of machining shafts each including a machine tool fitted thereto  
Apparatus for controlling the position of a plurality of machining shafts each including a machine tool fitted thereto so as to move each machining shaft up to its given position in response to the...
4138633 Position control apparatus for circular tables  
An angular position control apparatus for a machine tool circular table comprises a circuit for discriminating whether a command from a command register is such that the output from an absolute...
4135239 Numerically controlled machine tool system  
A system in which a machine tool is controlled by a digital computer and an operator to perform a succession of machining operations at a succession of spatial points. The system includes means for...
4131837 Machine tool monitoring system  
During machine tool operation a first set of sensors, referred to as cutter deflection sensors, provides data which is representative of the physical deflection of the cutting tool from a rest...
4042812 Pulse distribution method and apparatus  
The present invention discloses a method and apparatus for distributing command pulses to a numerically controlled machine which is provided with a first and a second control axis having different...
3793511 DIGITAL MOTOR CONTROL CIRCUIT  
A circuit for controlling the velocity and acceleration of a motor. The circuit includes a pulse source for producing pulses each of which represent an increment of velocity and for producing said...
3770947 TOOL CONTROL  
System for control of tool drive with respect to at least X and Y axes to trace a first path segment and to approach a second path segment (e.g., for tool offset, or to trace an inscribed curve...
3751651 DIMENSION COMPARATOR FOR MACHINE TOOLS  
A dimension comparator for machine tools is disclosed wherein a first comparator compares a theoretical numerical dimension with an actual dimension as determined by a position measurer. After it...
3676650 NUMERICAL CONTROL SYSTEM USING POSITION NUMBER GENERATOR  
A variable phase signal generator for driving a phase analog loop in a numerical control system wherein a computer responds to program data to output position number sequences and digital means are...
3612976 POSITION CONTROL SYSTEM  
A control system for positioning a machine member from an initial position to a new command position. The member is moved by appropriate motor and control means in cooperation with a delta counter...
3602700 NUMERICALLY CONTROLLED MACHINE TOOLSLIDE-POSITION-INDICATING SYSTEM  
In a numerically controlled machine tool system of a type wherein the motion of a machine tool is controlled by comparing, for each axis the present location of the machine toolslide with a desired...
3596266 NUMERICAL CONTROL SYSTEM AND METHOD  
A control system having a stored program digital computer for transmitting commands to digital servos for a punch press with digital to analog converter circuitry providing for a digitally selected...
3591781 MACHINE TOOL CONTROL SYSTEM WITH EDGE GENERATOR  
A machine tool control system wherein command-position signals (such as square waves) are generated without the use of linear interpolation logic. A number representing a position in time...
3453549 MACHINE CONTROL SYSTEM  
3248624 Tape controlled digital synchro simulator for shaft control  
3246223 Selective condition limiting recording system for a motor controlled machine tool  
2852189 Computer for machine tool control  
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