公开(公告)号：US3633011A

公开(公告)日：1972-01-04

申请号：US3633011D

申请日：1968-08-29

Applicant: IBM

Inventor： BEDERMAN SEYMOUR ,  LANKFORD LARRY G

IPC: B23Q15/22 ,  G05B19/18 ,  G05B19/408 ,  G05D5/00 ,  B23Q5/22 ,  G06F15/18

CPC classification number: G05B19/4083 ,  G05B19/408 ,  G05B2219/36503 ,  G05B2219/37193 ,  G05B2219/37196

Abstract: Method and apparatus for manufacturing precisely dimensioned metal parts on a program-controlled machine tool having a workpiece-supporting fixture, without the necessity of precisely locating the workpiece on the fixture. The workpiece is first placed on the fixture in an approximate position within predetermined limits of a standard position. The actual position (i.e., location and orientation) of the workpiece on the fixture is then measured by means of a programmed measuring apparatus while the fixture is accurately located with respect to that apparatus. The machine tool is controlled by a standard program, based on a standard position of the workpiece on its fixture and an accurate location of the fixture on the machine tool. The data defining the actual position of the workpiece on the fixture are utilized to modify the program of the machine tool, so as to compensate for the difference between the standard position of the workpiece and its actual position. The measurement of the workpiece position is performed at a measuring station, and the fixture with the workpiece mounted thereon is then conveyed to a fabrication station, which is shown as including a numerically controlled five-axis machine tool. The position-defining data determined at the measuring station is associated with identifying data of the particular fixture and is stored in a memory. When that fixture arrives at the fabrication station, it is accurately located with respect to the machine tool, and is identified. The identifying data is used to retrieve from the memory the proper set of position-defining data, which is used to modify the machine tool program to produce the desired precisely dimensioned product.

Abstract translation: 在具有工件支撑夹具的程序控制的机床上制造精确尺寸的金属部件的方法和装置，而不需要将工件精确地定位在固定装置上。

公开(公告)号：US3591761A

公开(公告)日：1971-07-06

申请号：US3591761D

申请日：1968-07-05

Applicant: IBM

Inventor： BEDERMAN SEYMOUR ,  LANKFORD LARRY G

IPC: B23H7/26 ,  B23H7/20 ,  G05B19/18 ,  G05B19/27 ,  G05B19/4093 ,  B23P1/12 ,  B23P1/14

CPC classification number: B23H7/20 ,  G05B19/188 ,  G05B19/27 ,  G05B2219/37405 ,  G05B2219/45221

Abstract: A multiple axis machine tool control system is provided for removing layers of material from a workpiece. The system position controller repetitively moves the work element, in rectilinear parallel paths, in a scanning manner, back and forth across the workpiece between stored X- and Y-coordinate limits to remove incremental layers of material. Control of material removal in the Z-direction is dependent upon a current sensing arrangement whereby the magnitude of the current flow between the EDM work element and the workpiece is sensed and used to control the Zdirection position of the work element. The sensed current also acts to control the frequency of automatic calibration of the work element. With the EDM wire electrode stored on a reel a new section of electrode is automatically allowed to advance, during each calibration cycle, in dependence upon the amount of electrode wear.

公开(公告)号：US3538590A

公开(公告)日：1970-11-10

申请号：US3538590D

申请日：1968-09-30

Applicant: IBM

Inventor： BEDERMAN SEYMOUR ,  LANKFORD LARRY G

IPC: B23P19/00 ,  G06F17/00 ,  G06F19/00 ,  B23P19/04 ,  B23Q17/00

CPC classification number: G05B19/41805 ,  Y02P90/04 ,  Y02P90/10 ,  Y02P90/18 ,  Y02P90/265 ,  Y10T29/49771 ,  Y10T29/53013 ,  Y10T29/53017 ,  Y10T29/53022 ,  Y10T29/53061

公开(公告)号：DE1943558A1

公开(公告)日：1970-03-05

申请号：DE1943558

申请日：1969-08-27

Applicant: IBM

Inventor： BEDERMAN SEYMOUR ,  GENE LANKFORD LARRY

IPC: B23Q15/22 ,  G05B19/18 ,  G05B19/408 ,  G06F15/18

Abstract: Method and apparatus for manufacturing precisely dimensioned metal parts on a program-controlled machine tool having a workpiece-supporting fixture, without the necessity of precisely locating the workpiece on the fixture.

公开(公告)号：DE1933058A1

公开(公告)日：1970-01-29

申请号：DE1933058

申请日：1969-06-30

Applicant: IBM

Inventor： BEDERMAN SEYMOUR ,  GENE LANKFORD LARRY

IPC: B23H7/26 ,  B23H7/20 ,  G05B19/18 ,  G05B19/27 ,  G05B19/4093 ,  B23P1/12

Abstract: 1,223,218. Programmed electric control. INTERNATIONAL BUSINESS MACHINES CORP. June 19, 1969 [July 5, 1968], No.30979/69. Heading G3N. In a system for a machine tool controlled by a programme e.g. punched tape, a material removing element is moved in a succession of linear scans over a workpiece, the material removal being controlled by a means sensing the flow of energy to the element. Each scan removes an incremental layer of material until a determined depth is removed which may be perfomed by an electric discharge, a laser beam, or a stream of abrasive fluid. The system is particularly suited to the forming of cavities in a plane surface. The element may travel in a series of spaced parallel lines e.g. 43 Fig.4A in one, say X major direction for a first scan, after which the scanning sequence is reversed so that the element scans in a Y major direction, see Fig. 4B (not shown), for a second scan when the sequence reverts to the first scanning pattern et seq. Traverse may be commenced from any corner and either an X major or Y major scan pattern. In the embodiment described an E.D.M. machine has a continuous wire electrode which is advanced at intervals during which the element is moved periodically to a calibration position, the period between calibrations being decreased as the element cavity approaches a depth limit, in order to improve accuracy and uniformity of depth. The energy flow as measured by a current transformer 12 Fig. 1 is used to control the depth of cut and frequency of calibration. A current signal I is supplied through an integrator 13 to a level sensor 15, which at a determined value releases a signal to a sequence controller illustrated in Fig. 3 (not shown) which temporarily disables operation of the machine and moves the element to a calibration position, advances the wire and returns the element to its former position and reinitiates operation. The signal I is also supplied to an amplitude sensor Fig. 2A (not shown) where gates are set dependent on whether the value lies between certain limits e. g. > 3, > 5, > 7 amps. If the current level is too high the electrode wire erodes more quickly hence more frequent calibrations are necessary. If I is > 7 a signal is released to a sequence controller, Fig. 3, and a reset signal is supplied to level sensor 15 to initiate recalibration. The determined value in the level sensor is reduced by the programme arrangement in order that recalibration will be performed more frequently as the required depth is approached. The I > 7 signal also prevents the wire from fusing to the cavity bottom when a high point is encountered, and several calibrate sequences may be performed before the wire has been burned sufficiently to clear an obstruction. A current of less than 3 amps causes a signal to stop the X-Y traverse, electro wire being advanced until I is > 3 when the X-Y traverse is continued. When I is >5 the X-Y traverse is reduced to one quarter of normal running speed by arrangements illustrated in Figs. 2A, 21 (not shown). At the calibration position the wire is advanced until electric contact is established between the wire and a fixed electrode which contact develops a signal to reset gates which return the electrode to its previous position. The element may be alternatively fixed and relative movement performed by traverse of the work table. Servo-drives for all motions may be stepping motors rotatable in increments according to digital input data, and positional sensors likewise generate digital data in the form of 14 bit characters. A punched tape reader 42 distributes numerical data stored in registers. Before a rectangular cavity is to be eroded, four sets of X, Y co-ordinates defining limits in a horizontal plane and the depth co-ordinate Z are fed into position controller and sequencer 26 which controls the machine until the required cavity is cut, or there is an unscheduled event. In either of these two instances control is returned to the tape reader and programmer 42. For irregular or non linear cavities e.g. ellipses, a series of lines of variable length are scanned in one direction say X each line being traversed under the control of the sequencer, after which the next set of line data is drawn from the position controller. A series of spaced lines could be cut and a similar direction scan could follow with the second group of lines interlaced with a first group. This could be followed by further scans in the Y direction. For each new line a new set of data is read from the tape, but generation of non-rectangular contour data by digital computer is envisaged. In addition to cavity machining, parts of a workpiece could be eroded to leave one or more features in relief. A logic system is described in the Specification to control the machine.

公开(公告)号：CA818103A

公开(公告)日：1969-07-15

申请号：CA818103D

Applicant: IBM

Inventor： ABRAMSON PAUL ,  KRAKINOWSKI MORRIS ,  STILWELL GEORGE R JR ,  WINCHELL ANTHONY H ,  BEDERMAN SEYMOUR ,  CHIN PAO H ,  BENNETT RICHARD W

公开(公告)号：DE3785883T2

公开(公告)日：1993-12-23

申请号：DE3785883

申请日：1987-02-03

Applicant: IBM

Inventor： BEDERMAN SEYMOUR ,  WILLETT RICHARD MICHAEL

IPC: H04L12/46 ,  H04L12/56

Abstract: A method for configuring/reconfiguring a limited broadcast route within a bridge-connected network. The method includes an algorithm, which configures a minimum spanning tree route. A source node generates and transmits a search frame with indicia set to a value representative of a configuration time. Each bridge in the network receives the frame and determines if the setting of the indicia matches the setting of a time code in said bridge. If there is a match, the bridge discards the frame. Otherwise, the frame is forwarded and the bridge is characterized as a limited broadcast (LB) bridge. The process is repeated at subsequent bridges until a leaf bridge is determined. Thereafter, broadcast messages are permitted to advance through the LB bridges.

公开(公告)号：CA1264831A

公开(公告)日：1990-01-23

申请号：CA532422

申请日：1987-03-19

Applicant: IBM

Inventor： BEDERMAN SEYMOUR ,  WILLETT RICHARD M

IPC: H04L12/46 ,  H04L12/56 ,  H04L11/16

Abstract: RA985014 METHOD FOR ESTABLISHING A LIMITED BROADCAST PATH WITHIN AN INTERCONNECTED NETWORK A method for configuring/reconfiguring a limited broadcast route within a bridge-connected network. The method includes an algorithm, which configures a minimum spanning tree route. A source node generates and transmits a search frame with indicia set to a value representative of a configuration time. Each bridge in the network receives the frame and determines if the setting of the indicia matches the setting of a time code in said bridge. If there is a match, the bridge discards the frame. Otherwise, the frame is forwarded and the bridge is characterized as a limited broadcast (LB) bridge. The process is repeated at subsequent bridges until a leaf bridge is determined. Thereafter, broadcast messages are permitted to advance through the LB bridges.

公开(公告)号：DE3476729D1

公开(公告)日：1989-03-16

申请号：DE3476729

申请日：1984-11-27

Applicant: IBM

Inventor： BEDERMAN SEYMOUR

IPC: H04L12/433 ,  H04L11/16

Abstract: Stations on a token ring network, such as the IEEE 802.5 Ring Local Area Network (LAN), use a "Secondary Transmit Opportunity" protocol to transmit information onto the ring. A ring station ready to send a buffered message and detecting an idle character immediately following a physical trailer sequence on the ring may insert the message. Simultaneously with transmitting, the station monitors the ring and if a token sequence is detected, checks its priority. If the priority is not higher than the priority of the buffered message, tne station continues the transmission. If the token has a higher priority, the transmission is aborted and the received token is sent. If a start of frame sequence is detected, the station aborts the transmission of the buffered message and forwards the message received from the upstream ring segment.

公开(公告)号：DE3477626D1

公开(公告)日：1989-05-11

申请号：DE3477626

申请日：1984-12-04

Applicant: IBM

Inventor： BEDERMAN SEYMOUR

IPC: H04L12/433 ,  H04L11/16

Abstract: In a ring communication network the message stripping function is distributed between at least two stations on the ring. One of these stations is either the station which originally transmits the message, or else is the destination station, and the other station is the ring's monitor station. The originating station uses the source address as the basis for removing a portion of the message while the destination station uses the destination addess. The monitor station uses the state of a monitor count bit in the message as the basis for removing the remaining portion of the message from the ring. By distributing the stripping function, between two stations on the ring, a significant reduction in ring latency is achieved.