| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 700188000 | Including velocity or acceleration control | 14 |
| 20090157218 | NUMERICAL CONTROLLER FOR CONTROLLING FIVE-AXIS MACHINING APPARATUS - A numerical controller for controlling a five-axis machining apparatus, in which a tool orientation command is corrected to thereby attain a smooth machined surface and a shortened machining time. The numerical controller includes command reading means that successively reads a tool orientation command, tool orientation command correcting means that corrects the tool orientation command so that a ratio between each rotary axis motion amount and a linear axis motion amount is constant in each block, interpolation means that determines respective axis positions at every interpolation period based on the tool orientation command corrected by the tool orientation command correcting means, a motion path command, and a relative motion velocity command such that a tool end point moves along a commanded motion path at a commanded relative motion velocity, and means that drives respective axis motors such that respective axis positions determined by the interpolation means are reached. | 06-18-2009 |
| 20120016514 | NUMERICAL CONTROL APPARATUS AND PRODUCTION SYSTEM - A numerical control apparatus includes a machining-program reading unit that reads a command issued from a machining program, a command-path storing unit that stores a pre-compression command path in a pre-compression command path buffer, a compression processing unit that creates new one post-compression command path connecting start points and end points of a continuous plurality of pre-compression command paths, a movement-data creating unit that creates tool movement data necessary for correcting the post-compression command path to a tool movement path and interpolating the tool movement path, and an interpolation processing unit that interpolates the tool movement path and calculates a tool position using both the pre-compression command path stored by the command-path creating unit and the tool movement data of the tool movement path after compression created by the movement-data creating unit. | 01-19-2012 |
| 20140025195 | Computer Numerical Control Devices Employing Accelerometers And Associated Feedback Method - A computer numerical control (CNC) device includes an integral accelerometer. A method of improving the accuracy CNC devices comprises integrating an accelerometer within the reader head of a linear feedback system. The feedback-system preferably incorporates acceleration feedback along with position feedback. The present CNC device can be incorporated in, and the method can be implemented for, machines including mills, lathes, routers, grinders, robotic devices, optical feedback systems, linear optical encodes, rotary optical encoders, servo drives and servo motors. | 01-23-2014 |
| 20140148942 | METHODS AND SYSTEMS FOR CALCULATION OF FEEDRATE - Methods and systems for calculating a feedrate for programming a multi-axis machining tool. For at least one control block in a defined machining path: a displacement of a defined machine control point from a previous control block to a current control block is determined; a displacement of a defined feedrate control point from the previous control block to the current control block is determined; a compensation ratio is calculated as a ratio between the displacement of the defined machine control point and the displacement of the defined feedrate control point; and a feedrate for the machine control point is calculated by applying the compensation ratio to a desired feedrate. The calculated federate is used in a control block of a multi-axis machining tool. | 05-29-2014 |
| 20140195037 | NUMERICAL CONTROL DEVICE - A numerical control device includes: a path local filter which locally interpolates an interpolation interval among a tool path so that a variation in a differential value at an interpolation object point becomes a continuous variation and a pulse interpolation unit which derives a reference time which proceeds per reference unit time which is shortened or extended corresponding to a deceleration instruction or an acceleration instruction according to a special command. The device obtains, from an intervening variable time function, an intervening variable at each time point at every reference unit time of the derived reference time, obtains a position coordinate on each transfer axis, with the position coordinate corresponding to the intervening variable at each obtained time point, obtains a transfer amount of a support in each transfer axis direction from the obtained position coordinate, and sets the transfer amount per reference unit time as a command pulse. | 07-10-2014 |
| 20140214193 | MACHINING PROGRAM CREATING DEVICE NUMERICAL CONTROL DEVICE, MACHINING SYSTEM, MACHINING PROGRAM CREATING METHOD, NUMERICAL CONTROL METHOD, AND MACHINING PROGRAM - A numerical control device reads a machining program and causes a machine tool to operate based on the machining program. The numerical control device includes: an acceleration-deceleration determining unit; and a position-command generating unit. The numerical control device is configured to set the acceleration and the deceleration as acceleration-deceleration data when the acceleration and the deceleration satisfy tolerances decided based on actual mechanical dynamic characteristics, and set the tolerances as acceleration-deceleration data when the acceleration and deceleration do not satisfy the tolerances. The position-command generating unit is configured to generate a position command based on the moving command, the acceleration-deceleration data, and the speed at the end of the command route and the superimposition amount subjected to processing by the acceleration-deceleration determining unit. | 07-31-2014 |
| 20150378342 | COMMAND DATA GENERATION METHOD, POSITIONING APPARATUS, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHOD - A command data generation method includes the steps of acquiring, by performing iterative learning control on a moving member, a first command data set for moving the moving member along a first trajectory, the first command data set including data corresponding to an acceleration section, a constant speed section and a deceleration section of the moving member, and generating a second command data set for driving the moving member along a second trajectory by using a part of data for the constant speed section in the first command data set. | 12-31-2015 |
| 20160001411 | FORCE RESPONSIVE POWER TOOL - A controller coupled to a motion actuator responsively varies a speed of the motion actuator and an operating speed of a working surface within the range of an initial speed and a max speed and responds to a derived force that represents an amount of force an operator applies between a workpiece and the working surface. The controller, under both acceleration and deceleration, allows the operator with an applied force to manageably change simultaneously both a rate of work on the workpiece and the operating speed of the working surface according to a sensitivity profile expressing a relationship between the derived amount of force and the operating speed of the working surface. A tool for operating on the workpiece includes the motion actuator coupled to the working surface to engage the workpiece. | 01-07-2016 |
| 20160054727 | NUMERICAL CONTROLLER THAT SHORTENS CYCLE TIME OF MACHINING PROGRAM - A numerical controller decodes a block read out from a machining program, calculates execution data to be used for control over a machine tool, and determines whether a travel amount resulting from travel instructions for control axes of the machine tool is existent or not based on the calculated execution data. If the travel amount resulting from the travel instructions for the control axes is not existent as a result of such determination, processes for the present block are omitted and cycle time is thereby shortened. | 02-25-2016 |
| 20160091886 | NUMERICAL CONTROL DEVICE - In a numerical control device | 03-31-2016 |
| 20160103446 | NUMERICAL CONTROLLER INCLUDING OVERLAP FUNCTION BETWEEN ARBITRARY BLOCKS BY COMMON ACCELERATION/DECELERATION CONTROL UNIT - A numerical controller carries out acceleration/deceleration control over an interpolation pulse produced based on command blocks. This numerical controller exercises acceleration/deceleration control processing over the interpolation pulse based on an acceleration/deceleration setting which corresponds to the command blocks, and outputs a first speed pulse. The numerical controller exercises acceleration/deceleration control processing over the first speed pulse such that command blocks overlap each other, based on an overlapping shared acceleration/deceleration setting which does not depended on the command blocks, and outputs a second speed pulse. | 04-14-2016 |
| 20160116907 | NUMERICAL CONTROL DEVICE - A numerical control device configured to perform stopping control of an axis of a machining tool to be controlled corresponding to command for machining interruption during machining by moving a workpiece or a tool using cycle operation, the numerical control device includes an override input unit, a decelerating and stopping override change unit configured to calculate actual override, decelerated in stages at each interpolation period based on the override acquired by the override input unit, and a velocity calculation unit configured to decelerating and stopping control of the axis. | 04-28-2016 |
| 20160116909 | DEVICE AND METHOD OF CONTROLLING MACHINE TOOL, TO CONTROL SYNCHRONIZED OPERATION OF SPINDLE AXIS AND FEED AXIS - A machine tool controller including a numerical control section, a spindle-axis control section and a feed-axis control section. The spindle-axis control section includes a section for making the spindle axis perform an accelerated rotation at maximum capacity from a process start position toward a target thread depth, with a maximum rotation speed set as a target value; a section for detecting a maximum acceleration during the accelerated rotation based on a rotational position; a section for detecting a residual rotation amount from a current position to the target thread depth, based on a total rotation amount and the rotational position; a section for detecting a current speed based on the rotational position; and a section for making the spindle axis perform a decelerated rotation at maximum capacity to reach the target thread depth after the accelerated rotation, based on the maximum acceleration, the residual rotation amount and the current speed. | 04-28-2016 |
| 20160147213 | NUMERICAL CONTROLLER FOR RETRACTION CONTROL - A numerical controller which controls a five-axis machining machine having two rotary axes generates speed data for deceleration stop along movement paths when a stop signal that requires interruption of machining and retraction is sensed, and based on the speed data, generates stop retraction path command data combining a path for the deceleration stop along the movement paths and a retraction path receding from the movement paths. | 05-26-2016 |
