Repeated Machining Passes Patents (Class 700/191)
  • Patent number: 10365627
    Abstract: A numerical controller of a processing machine determines corresponding setpoint axis values based on setpoint position values for position-regulated axes operating on machine elements. Before controlling the position-regulated axes, volumes to be occupied by protection bodies associated with the machine elements, a workpiece and a tool are defined and it is checked whether the protection bodies remain disjoint while controlling the position-regulated axes. Depending on the result of the checks, the controller either controls the position-regulated axes in accordance with the setpoint position values or merely executes an error response without control. The controller contains a position error field which specifies for any given setpoint axis value an actual position the tool relative to the workpiece.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: July 30, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Jochen Bretschneider
  • Patent number: 10097876
    Abstract: An embodiment of the invention provides an apparatus for providing a media service while outputting a content. The apparatus includes: a processor; a memory for storing one or more program instructions executed by the processor; and a control signal receiver unit for receiving from a remote control a control signal resulting from a key input made by a user, where the program instructions determine whether the key input is a normal input or a force input by comparing a sensing level, which is associated with a pressure or an area by which the user presses the key, with a preset value; identify the content outputted on the screen when the control signal is received, when the key input is a force input; and execute an operation different from an operation of a normal input for the key, according to a combination of the identified content and the force input.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: October 9, 2018
    Assignee: HUMAX CO., LTD.
    Inventor: Sung Heum Park
  • Patent number: 8977382
    Abstract: Methods and devices for milling a channel-shaped cavity by a five-axis computer numerical control (CNC) machine by selecting a workpiece to be machined, determining cutting tool flow along the channel-shaped cavity, determining cutting tool in-depth penetration, determining a trochoid path, and determining auxiliary movements.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 10, 2015
    Assignee: D.P. Technology Corp.
    Inventor: Giuliano Sona
  • Publication number: 20150039123
    Abstract: An apparatus for removing for removing an out-of-tolerance area in a composite structure may include a machine tool having a machine head movable along at least one axis over the composite structure. The machine tool may include at least one of a video camera and a non-destructive inspection (NDI) scanner mounted to the machine head for scanning the composite structure and locating the out-of-tolerance area. The machine tool may also include a cutting tool movable along a tool path for removing a volume containing the out-of-tolerance area. The machine tool may additionally include a controller that may be programmable with a quantity of layers of the volume for which the cutting tool is paused following removal of each one of the layers.
    Type: Application
    Filed: March 15, 2014
    Publication date: February 5, 2015
    Applicant: The Boeing Company
    Inventors: Lawrence S. Lindgren, Scott W. Lea, Gary E. Georgeson
  • Patent number: 8942843
    Abstract: The present invention provides a tool path forming method in a milling processing system, the method including: (A) a shape offset step; (B) a virtual wall forming step; (C) an interference region forming and shape revising step; (D) a closed shape forming step; (E) a cutting surface forming step; (F) tool path forming steps; (G) an unprocessed region detecting step; and (H) an uncut region tool path forming step.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: January 27, 2015
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Sung Gun Lee, Yong Tak Hyun
  • Patent number: 8860795
    Abstract: A masquerading detection system includes: an imaging unit (2) that obtains a first image by imaging an inspection object (12) from a first angle, and a second image by imaging the inspection object from a second angle which is different from the first angle; a unit (101) that detects first feature points from the first image, obtains first feature point coordinates of the detected feature points, detects second feature points from the second image, and obtains second feature point coordinates of the detected feature points; a unit (104) that obtains transformed coordinates by performing a plane projective transformation for the second feature point coordinates from the second image to the first image; and a unit (105) that determines that masquerading has been attempted when the difference between the transformed coordinates and the corresponding first feature point coordinates is equal to or smaller than a predetermined value.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: October 14, 2014
    Assignee: NEC Corporation
    Inventor: Tetsuaki Suzuki
  • Patent number: 8860248
    Abstract: A demand response unit (DRU) interposed between a utility's electrical power line (PL) and at least one load (L1-Ln) to which power is supplied by the utility over the line. A detector (Fdet or Vdet) measures a characteristic (frequency F, voltage V) of an electrical waveform (W) by which power is transmitted by the utility to the load. The detector determines both when the measured frequency or voltage exceeds a predetermined threshold for a first predetermined period of time; and, if the threshold is exceeded, when the frequency or voltage exceeds the second predetermined threshold for a second predetermined period of time. For this purpose, the detector processes a predetermined number of intervals of the waveform and produces an average value of the characteristic which is compared to the threshold. This is done to reduce the effect of extraneous events which may temporarily change the value of the frequency or voltage.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: October 14, 2014
    Assignee: Aclara Technologies LLC
    Inventor: Christopher K. Fleck
  • Patent number: 8838265
    Abstract: A work having a non-circular cross-section is machined by relative movement between the work and a tool, as the relative position and angle between the work and tool are changed at least within a plane including the cross-section of the work. In machining along a preset tool path, the difference between the relative angle at a point on the preset tool path which machining is started and that point on the preset tool path at which machining is finished is calculated. Time needed in machining along the preset tool path is equally divided by a preset number at equal time divisions, and positions on the tool path corresponding to equal time divisions are set as tool path points. When the tool moves through each point, the relative angle is continuously changed an angle corresponding to division of the difference of the relative angles by the preset number of equal time divisions.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 16, 2014
    Assignee: Mori Seiki & Co., Ltd.
    Inventors: Akira Kimura, Katsuhiko Ono
  • Publication number: 20140154470
    Abstract: A method of machining an article. The method includes: scanning the article to determine an initial surface profile; determining a cross sectional area removed from the article by a material removal tool in a material removal pass under controlled conditions; using the cross sectional area to determine one or more material removal tool contact angles for at least one material removal pass by the material removal tool under the controlled conditions required to conform the initial surface profile to a nominal surface profile; and machining the article to conform the initial surface profile to the nominal surface profile.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: ROLLS-ROYCE PLC
    Inventors: Wee Kin TEO, Tao Pey YUEN, Lai Chow YIN, Lim Tao MING, Sathyan SUBBIAH
  • Patent number: 8676372
    Abstract: A method and apparatus for managing machining. A desired level of engagement of a tool may be identified with a workpiece. A tool path for the tool may be generated relative to the workpiece. The tool path may have a number of levels of engagement of the tool with the workpiece along the tool path. The number of levels of engagement of the tool with the workpiece along the tool path may be based on the desired level of engagement.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: March 18, 2014
    Assignee: The Boeing Company
    Inventors: Jared Lee Bolin, Ryan Lee Hanks
  • Patent number: 8560113
    Abstract: A method is disclosed for generating a tool path for milling a region of a workpiece having first, second and third sides. The method includes: generating a first arc having a corresponding in-process material boundary intersecting the first side and which is tangent to the second side and to the third side; generating a succession of one or more second arcs, having a corresponding in-process material boundary which intersects the first side, is parallel to the first arc, and progresses by a corresponding first predetermined value from the first arc toward the first side until the in-process material boundary corresponding to one of the second arcs has a maximum distance from the first side less than the first predetermined value; and thereafter generating a succession of transition passes connecting each one of the second arcs end to end with the first arc to form the tool path.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: October 15, 2013
    Assignee: Truemill, Inc.
    Inventors: Alan Diehl, Robert B. Patterson
  • Patent number: 8350742
    Abstract: A method for forming a global spectrum (Sg) of an analogue signal (A) to be digitized, in which: the analogue signal (A) is sampled with a first analogue-digital converter (21, 22) of determined Shannon frequency (Fs) so as to obtain an aliasing spectrum (Sr), the analogue signal (A) not having been previously filtered by an anti-aliasing filter; a base spectrum (Sb) is subtracted from the aliasing spectrum (Sr) so as to obtain an aliased spectrum (Sre), the base spectrum (Sb) corresponding to an aliasing-free spectrum of the said analogue signal; a dealiased spectrum (Sd) is computed on the basis of the aliased spectrum (Sre) as a function of the Shannon frequency (Fs) of the converter (21, 22); the base spectrum (Sb) is concatenated with the dealiased spectrum (Sde) so as to form the global spectrum (Sg) of the analogue signal (A).
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: January 8, 2013
    Assignee: Snecma
    Inventors: Valerio Gerez, Julien Christian Pascal Griffaton
  • Patent number: 8180481
    Abstract: A system and method for operating an autoloop system on an electrical distribution system is provided. The system includes a first branch circuit having a first recloser and a midpoint recloser and a second branch circuit having a second feeder recloser and a midpoint recloser. A tie recloser is electrically coupled between the first branch circuit and the second branch circuit wherein the tie recloser closes only after a fault is detected. A master controller associated with the first and second branch circuits communicates with the reclosers of the first and second branch circuits. The master controller includes a processor for blocking a fast tripping function of a feeder recloser in response to the detection of a fault on the other branch circuit. The portion of a circuit where a fault is detected may be isolated to minimize the portion of the first and second branch circuits without power.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: May 15, 2012
    Assignee: Consolidated Edison Company of New York, Inc.
    Inventors: Paul V. Stergiou, William J. Harris
  • Patent number: 8150545
    Abstract: A method and a device for position-dependent compliance compensation in a machine tool is disclosed. The compliance of the machine tool is derived at a position of a tool of the machine tool from machine data stored in memory, a machining force acting on the tool during a machining process at this position is determined, and at least one machining parameter that has an influence on the machining process is derived at this position in dependence on the derived compliance and the machining force so as to counteract a displacement of the tool with respect to a desired position caused by the compliance of the machine tool and the machining force. This optimizes the machining time and/or contour fidelity when machining a workpiece with a machine tool.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: April 3, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Dirk Jahn, Rouven Meidlinger, Mirco Vitr
  • Patent number: 8112173
    Abstract: A position ensuring system includes an A-axis calibration system which measures a displacement angle, which is an error between a target value and a measured value of the pivot angle of the spindle head about the A-axis, and corrects the pivot angle about the A-axis in such a manner that the displacement angle as measured with the corrected pivot angle as a target value fall within a tolerable range. A corrected data storage device stores the corrected pivot angle about the A-axis. An A-axis control system reads out the corrected pivot angle about the A-axis, the corrected pivot angle about the A-axis to pivot the spindle head when executing oblique machining of the inclined hole.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 7, 2012
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Kouichi Katoh, Takamasa Itoh
  • Patent number: 8103375
    Abstract: A method for finishing a part having excess material includes generating one or more surfaces on a model of the part to be machined, creating a machining tool path drive geometry, using the machine tool path drive geometry and one or more surfaces on the model to be machined to generate machining tool paths on the surfaces; and running tool paths on the part in a fixture.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: January 24, 2012
    Assignee: General Electric Company
    Inventors: Randall Maurice Ouellette, Jeffrey Robert Close, James Henry Madge
  • Patent number: 8078295
    Abstract: A method for controlling acceleration and deceleration before interpolating is provided. The method includes steps of previewing and analyzing a processing program to estimate a limitation of a processing velocity and distributing a processing velocity according to the limitation. The step of previewing and analyzing a processing program includes sub-steps of providing the processing program including a pathway formed by plural blocks, unitizing the motion vector of each block into the unit vector ( N ^ i = N _ i ? N _ i ? ) , calculating a length (DVi=?{right arrow over (DV)}i?) of a vector difference in the unit vectors between each block and its next block ({right arrow over (DV)}i={circumflex over (N)}i?{circumflex over (N)}i+1), calculating a sum of the length of the vector difference in a distance from a starting block (S=?DVn), and calculating the limitation of the processing velocity for an end of each block (Vlim) according to an inverse ratio of the sum (1/S).
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: December 13, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Chin-Chu Sun, Shih-Chang Liang, Wan-Kun Chang, Yung-Ming Kao, Cheng-Yu Chen
  • Publication number: 20110251715
    Abstract: A method is disclosed for generating a tool path for milling a region of a workpiece having first, second and third sides. The method includes: generating a first arc having a corresponding in-process material boundary intersecting the first side and which is tangent to the second side and to the third side; generating a succession of one or more second arcs, having a corresponding in-process material boundary which intersects the first side, is parallel to the first arc, and progresses by a corresponding first predetermined value from the first arc toward the first side until the in-process material boundary corresponding to one of the second arcs has a maximum distance from the first side less than the first predetermined value; and thereafter generating a succession of transition passes connecting each one of the second arcs end to end with the first arc to form the tool path.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 13, 2011
    Applicant: SURFWARE, INC.
    Inventors: Alan DIEHL, Robert B. PATTERSON
  • Patent number: 7941240
    Abstract: A position ensuring system includes an A-axis calibration system which measures a displacement angle, which is an error between a target value and a measured value of the pivot angle of the spindle head about the A-axis, and corrects the pivot angle about the A-axis in such a manner that the displacement angle as measured with the corrected pivot angle as a target value fall within a tolerable range. A corrected data storage device stores the corrected pivot angle about the A-axis. An A-axis control system reads out the corrected pivot angle about the A-axis, the corrected pivot angle about the A-axis to pivot the spindle head when executing oblique machining of the inclined hole.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: May 10, 2011
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Kouichi Katoh, Takamasa Itoh
  • Publication number: 20110093115
    Abstract: A position ensuring system includes an A-axis calibration system which measures a displacement angle, which is an error between a target value and a measured value of the pivot angle of the spindle head about the A-axis, and corrects the pivot angle about the A-axis in such a manner that the displacement angle as measured with the corrected pivot angle as a target value fall within a tolerable range. A corrected data storage device stores the corrected pivot angle about the A-axis. An A-axis control system reads out the corrected pivot angle about the A-axis, the corrected pivot angle about the A-axis to pivot the spindle head when executing oblique machining of the inclined hole.
    Type: Application
    Filed: December 29, 2010
    Publication date: April 21, 2011
    Applicant: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: Kouichi Katoh, Takamasa Itoh
  • Publication number: 20110093114
    Abstract: A tool-path calculation apparatus for a numerical controlled system and a method for operating the same are applied to a CNC tool machine. The tool-path calculation apparatus includes an upper controller and a servo driver. Firstly, an interpreter is provided to interpret the tool paths to produce a plurality of executable instructions. Afterward, the executable instructions are sent from the upper controller to the servo driver through a serial communication interface and stored in a queue buffer. Finally, the executable instructions are received and calculated by a tool path calculator to produce a plurality of points along the tool paths.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 21, 2011
    Inventor: Ching-Shiong TSAI
  • Patent number: 7848843
    Abstract: In a two-step processing mode in which a cup for attaching a lens to a chuck axis is changed from a large diameter cup to a small diameter cup on the way of processing, a roughing path data computing unit for computing first roughing path data larger than the target lens shape data by a predetermined finishing margin, and second roughing path data having a radius vector larger by at least ?a than at least radius vector data of the large diameter cup; and a processing controller for roughing the peripheral edge of the lens based on the second roughing path data in response to a processing start signal, thereafter stopping the processing and further resuming the processing. The processing controller performs, when a processing resuming signal is inputted, processing control of either roughing and finishing, or finishing without roughing.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: December 7, 2010
    Assignee: Nidek Co., Ltd.
    Inventor: Ryoji Shibata
  • Patent number: 7706913
    Abstract: A method for machining a workpiece 1 by means of a rotating cutting tool 2, in which the tool 2 is moved along paths 3 relative to the workpiece 1, characterized in that limits of machining portions to be machined by means of at least one tool 2 are determined, that within the range of the limits of machining portions to be machined by means of the tool 2 an infeed and/or lifting movement of the tool 2 is defined and that the infeed or lifting movement during machining of the workpiece 1 is carried out within the range of the limits of machining portions to be machined by means of the tool 2.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: April 27, 2010
    Assignee: P & L GmbH & Co. KG
    Inventor: Jürgen Röders
  • Publication number: 20090312859
    Abstract: An apparatus for controlling a trajectory along which a tooling positioner system moves tooling for machining multiple features of the same type in a component includes a first tooling trajectory having an entry velocity at a time when the tooling begins machining a first feature and an exit velocity at a time when the tooling completes machining of the first feature. A second tooling trajectory has an entry velocity at a time when the tooling begins machining a second feature and an exit velocity at a time when the tooling completes machining of the second feature. The entry and exit velocities of the second tooling trajectory are different from the respective entry and velocities of the first tooling trajectory. Methods for controlling a trajectory are also taught.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 17, 2009
    Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.
    Inventor: Mehmet E. Alpay
  • Patent number: 7580770
    Abstract: A path table operation is performed while updating the reference positions. When a read-out command in the path cycle table is read out, the reference positions are withdrawn and reset, and the respective axial positions at the time of the initiation of the path cycle command are stored. From the next period, the target positions are determined by adding the positions at the time of initiation to the respective axial positions corresponding to the reference positions stored in the path cycle table, and a path table operation is performed. A single path cycle table is sufficient for storing commands for portions to be repeatedly worked.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: August 25, 2009
    Assignee: Fanuc Ltd
    Inventors: Takahiko Endo, Yasushi Takeuchi
  • Patent number: 7577490
    Abstract: A method for generating, by a direct process, a tool path for milling a region of a workpiece by a milling cutter is disclosed. The tool path consists of one or more passes. The method includes the steps of storing a maximum engagement of the milling cutter and defining each one of the one or more passes such that a value of the engagement, when traversing each one of the one or more passes, does not exceed the maximum value of engagement.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: August 18, 2009
    Assignee: Surfware, Inc.
    Inventors: Alan Diehl, Robert B. Patterson
  • Publication number: 20080185368
    Abstract: Systems, methods and software products generate multi-pass contours for controlling a numerical control (NC) machine to cut out a part with weld preparation. Weld preparation information is combined with an electronic description of the part to form an enhanced electronic file. Multi-pass contours, usable to control an NC machine to cut out the part with at least one bevel, are generated based upon the enhanced electronic file.
    Type: Application
    Filed: December 31, 2007
    Publication date: August 7, 2008
    Inventor: Matthew Fagan
  • Patent number: 6952627
    Abstract: A method of machining a surface of a workpiece is accomplished by bringing a cutting tool into contact with the surface of the workpiece and for at least one cutting pass, i, causing relative movement between the cutting tool and the surface of the workpiece along a path in the surface of the workpiece. The path is in the nature of a mathematical function defined over a segment, C, of a coordinate system and characterized by a set of nonrandom, random or pseudorandom parameters selected from the group consisting of amplitude, phase and period or frequency.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: October 4, 2005
    Assignee: General Electric Company
    Inventors: Eugene Olczak, Erwin W. Liang
  • Patent number: 6941188
    Abstract: A method of making a shaped article from a block of foam is disclosed. The method comprises programming a milling machine with coordinates for a desired surface contour of a prototype foam body. A block of foam is cut using a milling machine to remove one or more portions of a first side of the foam block to the contour of the desired surface contour. One or more spaced pockets are formed while leaving at least one supporting portion on the first side of the foam block. The block of foam is then milled to remove a second side of the foam block to the desired depth of the surface contour wherein the second side is on the opposite side of the foam block from the first side. The first side of the foam block is then cut to remove the supporting portion at the level of the desired surface contour.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: September 6, 2005
    Assignee: Creative Seating Innovations, Inc.
    Inventor: Roger Arnold, II
  • Patent number: 6885908
    Abstract: A determining method of movement sequence and a positioning apparatus of the invention are arranged in such a manner that, in order to measure positions of plural marks as being measurement targets provided on a wafer within a shorter time, a group including executable movement sequences is generated out of a group of movement sequence candidates, each indicating a measurement order of these marks, and a movement sequence that accomplishes a movement operation between the marks within the shortest time is obtained from the group thus generated. For efficiently searching an optical system as a globally optimal solution within a shorter computation time, independently of an initial solution given, a designing method of optical system of the invention obtains the optimal solution of the optical system to be designed, using an evolutionary computation method (genetic algorithm) having a genetic operator for handling continues values explicitly.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: April 26, 2005
    Assignee: Nikon Corporation
    Inventors: Koji Yoshida, Junya Kiyohara, Isao Ono, Yoshihiro Tatsuzawa, Shigenobu Kobayashi
  • Patent number: 6865442
    Abstract: In accordance with the present invention, there is provided a method of milling an orthotic device by using a computer controlled milling tool. The orthotic device is defined by a orthotic device upper contour. The method begins with providing a workpiece which defines a mill plane and a perpendicular axis thereto. The method further provides for milling the milling tool into the workpiece along the perpendicular axis to a depth corresponding to the orthotic device upper contour. The method further provides for translating the milling tool relative to the workpiece in the mill plane along a milling path while adjusting the depth of the milling tool to correspond to the orthotic device upper contour to selectively remove material from the workpiece for producing the orthotic device therefrom. The milling path is characterized by a plurality of mill rotations about the perpendicular axis. Successive ones of the mill rotations are radially further from the perpendicular axis.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: March 8, 2005
    Inventor: Stephen J. Jared
  • Patent number: 6701211
    Abstract: A control command is provided to a control computer, by which a workpiece can be machined by a machine tool over a predetermined total height and a predetermined contiguous region by cutting, in particular by turning with a lathe. The control computer automatically determines, based on the control command, a number of travel paths, based on which the workpiece is machined in the predetermined region over a partial height until reaching the total height. The control computer determines the travel paths so that the partial height is varied.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: March 2, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jürgen Orczykowski, Uwe Scheuermann
  • Patent number: 6676344
    Abstract: In a method for machining a workpiece, and for identifying a sequence of steps for machining a workpiece, a final shape required for the whole or part of the workpiece (is identified at 34), a three dimensional envelope shape is generated around the required shape (36), differences between the current shape and the envelope shape are generated at (38) to allow a sequence of cuts to be generated at (40) and a tool path at (42) from which the current stock part can be cut down to the envelope shape. The definition of the current stock is then updated at (44) and the sequence repeated until the workpiece has been machined to the required shape.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: January 13, 2004
    Assignee: Rolls Royce plc
    Inventor: Martin P Amatt
  • Patent number: 6609044
    Abstract: An improved laser cutting apparatus is provided that optimizes the amount of time required to perform all of the required cuts in a piece of sheet material. The optimization minimizes the amount of rapid-travel movement of the laser head, and virtually eliminates all head-up/head-down movements of the laser head. In one embodiment, the present invention performs a method that accepts NC code that has already been created by a conventional software product produced by a CAD/CAM vendor, and analyzes that NC code to create an optimized part program. The NC code is broken down and analyzed as a series of individual shapes to be cut by the laser head. Once the required shapes are known, a “sweep” is made to determine how many cut-outs are in each “band” being analyzed across the surface of the sheet material to be cut.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: August 19, 2003
    Assignee: Cincinnati Incorporated
    Inventors: Thomas A. Basista, Scott Bockbrader
  • Patent number: 6539277
    Abstract: A lapping surface patterning system includes a patterning apparatus which can be removably mounted over the lapping surface of a continuous polishing tool. The patterning apparatus includes a radial arm having a movable cutting tool carriage mounted thereon. The cutting tool carriage positions a cutting tool at a desired radius from the center of the lapping surface. The patterning apparatus further includes an outer support having a carriage which positions an outer end of the radial arm, thereby positioning the cutting tool at a desired angular position. A motion control system transmits control signals to the two carriages, thereby driving the cutting tool over a desired pattern. This system can be used to repeatedly and consistently form a pattern of grooves in the lapping surface of the polishing tool.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: March 25, 2003
    Assignee: Agilent Technologies, Inc.
    Inventor: Derek J. Alvis
  • Patent number: 6535788
    Abstract: A control device of a machine tool (100) has an input unit (1) for inputting the processing profile data (1a) and the workpiece data (1b) of the material and a profile of the workpiece to be processed. The control device input unit (1) also can receive a tool path changing operation command (1c), a manual operation command (1d) and a processing condition changing command. A data base (3) for storing at least one of the mechanical data of the machine tool to process the workpiece and the tool data of the tool mounted on the machine tool provides a signal to an estimating calculation unit (7) for estimating at least a processing load or the occurrence of interference of the tool with the workpiece based on the data inputted by the input unit (1) and the data stored in the data base (3).
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: March 18, 2003
    Assignee: Makino Milling Machine Co., LDT
    Inventors: Jun Yoshida, Akira Kawana, Shinichi Inoue, Tatsuya Hisaki
  • Publication number: 20030040834
    Abstract: An automated computer-implemented method for generating commands for controlling a computer numerical control machine to fabricate an object from a workpiece. The method includes the steps of: (1) determining a first set of Z coordinates for machining a first set of Z level planar slices with a first tool; and (2) determining a second set of Z coordinates for machining a second set of Z level planar slices with the first tool. The second set of Z coordinates is partitioned into one or more subsets. Each subset corresponds to a pair of adjacent Z coordinates belonging to the first set of Z coordinates. A distance between the Z coordinates of each subset is a unit fraction of a distance between the Z coordinates of the pair of adjacent Z coordinates which corresponds to each subset.
    Type: Application
    Filed: August 5, 2002
    Publication date: February 27, 2003
    Applicant: Surfware, Inc.
    Inventors: Glenn I. Coleman, Kenneth D. Merritt
  • Patent number: 6447223
    Abstract: A computer-implemented method and system is disclosed for controlling a cutting tool of a high speed cutting machine. The method and system provides an effective tool path for controlling a cutting machine under a constant rate of material removal in a high speed cutting machine in order to get away with the extreme cutting forces. The tool path also allows to better transfer the heat generated between the cutting tool and the workpiece through the chip. The method and system can be applied to any geometry of final shape of a workpiece.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: September 10, 2002
    Assignee: Parametric Technology Corporation
    Inventors: Charles M. Farah, Tamas T. Badics
  • Patent number: 6246924
    Abstract: The present invention is an apparatus and method for automatically realigning an end effector of an automated equipment after an undesired contact of the end effector to prevent a crash of the end effector. The present invention includes a plurality of contact detectors, and each of the contact detectors is disposed at a respective location with respect to the end effector. In addition, each of the contact detectors generates a respective signal for indicating direction of force on the end effector that results from the undesired contact. Furthermore, the present invention includes an end effector controller that is coupled to the plurality of contact detectors and to the end effector. The end effector controller causes the end effector to move to a reset position after the undesired contact when any of the respective signals from the plurality of contact detectors is greater than a predetermined level.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: June 12, 2001
    Assignee: Honda of America Mfg., Inc.
    Inventor: Mitch J. Holdgreve
  • Patent number: 6128546
    Abstract: An improved laser cutting apparatus is provided that optimizes the amount of time required to perform all of the required cuts in a piece of sheet material. The optimization minimizes the amount of rapid-travel movement of the laser head, and virtually eliminates all head-up/head-down movements of the laser head. In one embodiment, the present invention performs a method that accepts NC code that has already been created by a conventional software product produced by a CAD/CAM vendor, and analyzes that NC code to create an optimized part program. The NC code is broken down and analyzed as a series of individual shapes to be cut by the laser head. Once the required shapes are known, a "sweep" is made to determine how many cut-outs are in each "band" being analyzed across the surface of the sheet material to be cut. The number of bands and the types of sweep are varied to analyze different possibilities of rapid-travel distance while still eliminating all head-up/head-down movements of the laser head.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: October 3, 2000
    Assignee: Cincinnati Incorporated
    Inventors: Thomas A. Basista, Scott Bockbrader
  • Patent number: 6088627
    Abstract: A process for machining mechanical parts, including the milling of parts having a complex shape, includes the steps of determining the volume of the part to be machined, defining a corresponding machining grid, plotting the machining grid defined for the volume of the part to be machined, programming the plotted machining grid, and machining the part, grid line by grid line, according to the established programming. The process is implemented with an apparatus including a machining head coupled with a tool support. The tool support for the machining head (e.g., a cutting tool head) is positioned to face a predetermined point of the grid line to be machined, and immobilized. The machining head is mobilized to machine the desired grid line, with the tool support remaining fixed.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: July 11, 2000
    Assignee: Constructions Mecaniques des Vosges Marioni
    Inventor: Francois Wildenberg
  • Patent number: 6047225
    Abstract: An automatic programming apparatus comprises a machining unit preparing section for preparing plural machining units, a machining unit defining section for selecting a designated machining unit from the prepared machining units and designating the arrangement and size of the machining area of the selected machining unit, and an machined material creating section for creating a shape with the machining area shape removed from the material shape. The automatic programming apparatus and method for an NC machine which can easily create a machining program in complicated machining and also create a correct program quickly in complicated machining by trial and error.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: April 4, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kenji Iriguchi, Kiyotaka Kato, Susumu Matsubara
  • Patent number: 6018689
    Abstract: Described are a vibration actively reducing apparatus and a method for identifying a transfer function in the vibration actively reducing apparatus. An identification signal which is a quantization of at least one sinusoidal wave is supplied from a controller of the vibration actively reducing apparatus to a controlled vibration source in synchronization with a predetermined output sampling clock (SCo) to develop an identification vibration therefrom. The controller reads a residual vibration signal from a residual vibration detector of the actively reducing apparatus in synchronization with a predetermined input sampling clock (SCi). After read of the residual vibration signal as a time series data for each frequency, an FFT calculation is carried out for each time series data to extract a frequency component of the original sinusoidal wave.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: January 25, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takeshi Kumura, Shigeki Satoh