EP0389587A1 - Station d'usinage et son procede d'exploitation - Google Patents

Station d'usinage et son procede d'exploitation

Info

Publication number
EP0389587A1
EP0389587A1 EP19890909532 EP89909532A EP0389587A1 EP 0389587 A1 EP0389587 A1 EP 0389587A1 EP 19890909532 EP19890909532 EP 19890909532 EP 89909532 A EP89909532 A EP 89909532A EP 0389587 A1 EP0389587 A1 EP 0389587A1
Authority
EP
European Patent Office
Prior art keywords
station
processing
cam
machine
cnc control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19890909532
Other languages
German (de)
English (en)
Inventor
Paul Fricker
Herbert Russbuelt
Roland Sauter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIMAG Patentverwaltungs- und -verwertungs-Gesellschaft
Original Assignee
LIMAG Patentverwaltungs- und -verwertungs-Gesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LIMAG Patentverwaltungs- und -verwertungs-Gesellschaft filed Critical LIMAG Patentverwaltungs- und -verwertungs-Gesellschaft
Publication of EP0389587A1 publication Critical patent/EP0389587A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM

Definitions

  • the invention relates to a processing station with a processing machine such as e.g. a machine tool, and a method for its operation.
  • a processing machine such as e.g. a machine tool
  • NC numerical control
  • CNC computer-controlled numerical control
  • the purpose of these controls is to generate a movement of the machine axes on the basis of commands and data which are entered via a keyboard, a data carrier (for example punch tape reader, diskette) or a data channel (for example chaining with serial transmission) and the To ensure implementation and control of the machining process.
  • a data carrier for example punch tape reader, diskette
  • a data channel for example chaining with serial transmission
  • NC or CNC control can be very complex, depending on the geometric and technological requirements of the machining process. For this reason, computer-aided manufacturing (CAM - "computer-aided manufacturing") is used for the calculation of the input parameters.
  • CAM stations use problem- and process-oriented application program languages to generate the required data, which is generally sent to the NC or CNC via data carriers ("off-line”) or via a data connection ("on-line") - Control are transmitted, usually in the form of coded language elements (ISO or EIA code).
  • NC or CNC controls are designed to control or regulate time-critical process variables and machine movements.
  • EP-A-0109742 and EP-A-0086843 for data transmission between the programming station and the NC or CNC control show connections which only temporarily block the data flow between the process computer of the programming station and the process computer of the NC or CNC Ensure control, but do not allow data flow at certain times, ie the connection between the process computer of the programming station and the process computer of the NC or CNC control is then interrupted.
  • EP-A-0109742 also shows connections that only lead to the programming station and to the NC or CNC control either selectively but not at the same time. It would therefore contradict the prior art to direct the data flow between the CAM station and the NC or CNC control differently than essentially only in the direction from the CAM station to the NC or CNC control . In other words, the state of the art only teaches to use a CAM station before starting the machining process, while the process-interactive use of a CAM station in cooperation with an NC or CNC control contradicts the state of the art ⁇ would speak.
  • CAM station and all tasks of the NC or CNC control can be done by the own process computer of the NC or CNC control.
  • the object of the invention is to combine the advantageous properties of a conventional NC or CNC control and a conventional CAM station in an integrated solution in such a way that conditions currently prevailing in the processing machine regarding the machining geometry and / or the Machining technology of the current machining process from the NC or CNC control to the CAM station reported back, processed in the CAM station, and the NC or CNC control still in time the data and necessary for the continuation of the machining process / or commands can be delivered.
  • a processing station is characterized by the combination of features specified in claim 1.
  • Advantageous designs of the processing station result from claims 2 to 6.
  • a method for operating the processing Processing station results from claim 7.
  • Advantageous further developments of the method result from claims 8 to 10.
  • a processing machine an NC or CNC control which comprises a process computer assigned to it; a CAM station which comprises a process computer assigned to it; a single console with a screen, keyboard and, if applicable, a printer for human-machine interaction both with the NC or CNC control and with the CAM station, and a connection for bidirectional data transmission (bidirectional connection, "bus") between the two process computers.
  • a processing machine an NC or CNC control which comprises a process computer assigned to it
  • a CAM station which comprises a process computer assigned to it
  • a single console with a screen, keyboard and, if applicable, a printer for human-machine interaction both with the NC or CNC control and with the CAM station, and a connection for bidirectional data transmission (bidirectional connection, "bus") between the two process computers.
  • the design of the processing station enables all functions that do not relate to time-critical process variables and movements of the processing machine to be transferred to the CAM station. This is more efficient and reduces the effort, because the NC or CNC control only deals with a part of the functions of a conventional NC or CNC control and can accordingly be designed more easily.
  • the multiple input of the same or similar data for example the recoding of the data from the CAM format to the NC or CNC format, for example in accordance with DIN 66025, and the associated ambiguities and sources of errors are avoided.
  • the user interface and the operating language are standardized, which improves the user friendliness.
  • the inventive Training of the processing station now includes a bidirectional coupling with real-time behavior between the CAM station and the NC or CNC control.
  • the actual NC or CNC control is reduced to a fuselage control, because parts of the classic task of an NC or CNC control are taken over by the CAM ⁇ Station, whereby a considerable rationalization effect is achieved.
  • the two process computers are constantly connected to one another and the console is permanently connected to both process computers.
  • the advantage here is that the data to be displayed of the CAM station and the NC or CNC control can both be displayed on the single screen at the same time using the known window technology.
  • the operator takes the other hand, at the same time on two screens look, of which respectively one each 'of the CAM station .. the N - or CNC control is assigned, or the operator takes up from
  • EP-A-0109742 derivable assign the screen either the data of the CAM station or the data of the NC or CNC control and dispense with the display of the unassigned data.
  • a machining station can preferably be used in connection with a machine tool and in particular for machining workpieces by electrical discharge machining (spark erosion).
  • connection for bidirectional data transmission is preferably designed as a data network to which additional processors and / or an external computer can be connected.
  • the advantage here is that the external computer can carry out administrative tasks and, for example, can obtain its data from the manufacturing plant without an operator being interposed.
  • the external computer It can also be connected very easily to the processing station according to the invention, because the data network can be designed (and correspondingly designed in accordance with the basic rules of modern network topology)
  • the processing machine is preferably a machine tool, in particular a machine tool for processing workpieces by electroerosion (spark erosion). 10.
  • the connection for bidirectional data transmission is preferably in the direction of at least during the operation of the processing machine for transmitting information about the processing machine, a tool used therein and / or a workpiece used therein
  • the method according to the invention for operating such a machining station according to the invention is characterized in that the process computer of the NC or CNC control operates in real time and at least
  • the CAM station 25 functions in the CAM station which do not relate to time-critical process variables and movements of the processing machine, the multiple input of the same or similar data, for example the recoding of the data from the CAM format to the NC or CNC format, for example
  • the process computer of the CAM station preferably also processes part of the time-critical process variables.
  • the type of integration and coupling means that the CAM station can also be used to process the process computer of the NC or CNC control when calculating Support real-time problems.
  • the process computer of the CAM station receives the latest information about the current machining geometrical and technological conditions of the current machining process.
  • the process computer of the CAM station processes a large amount of data from the machining process, which allows it to intervene in the ongoing machining process.
  • the process computer of the CAM station in particular if the processing machine is intended for machining a workpiece by electroerosion (spark erosion), can adapt the machining process when the parameters of the generator are changed, or it can change it by changing the geometry data when cutting radii or else by changing the so-called escape strategy with precarious stability of the machining process and especially with precarious rinsing conditions.
  • the connection for bidirectional data transmission in a preferred development of the method can at least temporarily provide information about the processing machine, a tool used therein and / or transfer a workpiece used in the direction from the NC or CNC control to the CAM station.
  • This information essentially represents the current machining-geometric and technological conditions of the current machining process, and their feedback to the CAM station takes place in addition to the conventional transmission of data and / or commands between the NC or CNC control to the CAM Station that before the start of the Machining process takes place.
  • connection is used as usual before the start of the machining process to transfer data about the workpiece geometry and machining geometry as well as technological data from the CAM station to the NC or CNC control.
  • connection is also used during the machining process to reload data of the above-mentioned type during the machining process, if this is necessary, for example, due to the limited storage capacity in the NC or CNC controller for cost reasons, and by Exchanging machining geometrical and technological data between the NC or CNC control and the CAM station, which opens up the possibility of optimizing the use of the capabilities of the process computer and thus the data exchanged itself.
  • the advantage of this solution according to the invention is that the same screen, the same keyboard, both for the part of the processing station which corresponds to the CAM station and for the part of the processing station which corresponds to the NC or CNC control, the same application program language and generally the same style of human-machine interaction can be used.
  • the processing station according to the invention the following can be mentioned, among others:
  • the figure shows a processing station according to the invention in a block-schematic representation. Since it is not the machining process itself that is important, but rather its interrelationships with the NC or CNC control and the CAM station, the invention can be described below with reference to training the machine tool for cutting a workpiece by means of electrical discharge machining can be described with a wire electrode as a tool.
  • the machining station according to the invention includes, among other things: a wire tool spark erosion machine 1,
  • a generator 2 for spark erosion - a CNC control 3 for the tool and the workpiece,
  • a first processor 6 of the CNC control 3 which works in real time and processes time-critical process variables
  • a second processor 7 of the CAM station 4 which processes all computation-intensive but predominantly not time-critical process variables
  • a console 5 with a screen, keyboard and printer, the screen of which is connected to the first processor 6 and the keyboard and printer of which is connected to the second processor 7, a high-performance bidirectional connection 8 which acts as a data network and the first processor 6 connects to each other with the second processor 7. If necessary, the first processor 6 can be supported by additional processors 6 1 , 6 ′′.
  • the machining station according to the invention can be connected to an external computer 9, which in the present example is a central operating computer of the machining workshop.
  • This connection can take place either in a conventional manner via a local high-performance network (LAN) or, as shown in dashed lines and designated by 10, directly via the data network 8 of the processing station.
  • LAN local high-performance network
  • the central operating computer 9 is able to detect and operate the processing station For example, to keep statistics of downtimes and operational incidents.
  • time-critical process variables that are processed by the first processor:
  • the console includes a single screen and keyboard, and a printer. It forms the only interface between the operating personnel and the programmers on the one hand and the processing machine on the other. Your tasks include:

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)

Abstract

Une station d'usinage comprend une machine d'usinage (1), une commande numérique ou une commande numérique par calculateur (3) avec un ordinateur correspondant (6), une station à mémoire associative (4) avec un ordinateur correspondant (7), un seul pupitre (5) d'interaction avec la commande (3) et la station à mémoire associative (4), et une liaison (8) de transmission bidirectionnelle de données ("bus") entre les deux ordinateurs (6, 7). Pendant l'exploitation de la machine d'usinage (1), les deux ordinateurs (6, 7) sont reliés en continu l'un avec l'autre et avec le pupitre (5). La liaison (8) peut être un réseau de données auquel peuvent être reliés des processeurs supplémentaires (6', 6'') et/ou un ordinateur externe (9). La machine d'usinage (1) peut être une machine-outil, de préférence d'usinage de pièces à usiner par électroérosion. La liaison (8) peut être activée afin de transmettre, de la commande (3) à la station à mémoire associative, des informations sur la machine d'usinage, sur un outil utilisé dans celle-ci et/ou sur une pièce à usiner par celle-ci. En service, l'ordinateur (6) de la commande (3) traite en temps réel au moins une partie des paramètres d'usinage à durée critique et l'ordinateur (7) de la station à mémoire associative (4) traite tous les paramètres d'usinage gourmands en calculs mais à durée non-critique, ainsi que, le cas échéant, également une partie des paramètres d'usinage à durée critique.
EP19890909532 1988-09-06 1989-09-04 Station d'usinage et son procede d'exploitation Withdrawn EP0389587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH334688 1988-09-06
CH3346/88 1988-09-06

Publications (1)

Publication Number Publication Date
EP0389587A1 true EP0389587A1 (fr) 1990-10-03

Family

ID=4253987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890909532 Withdrawn EP0389587A1 (fr) 1988-09-06 1989-09-04 Station d'usinage et son procede d'exploitation

Country Status (3)

Country Link
EP (1) EP0389587A1 (fr)
JP (1) JPH03502143A (fr)
WO (1) WO1990002980A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004416A1 (fr) * 1991-08-16 1993-03-04 Hitachi Seiko, Ltd. Systeme de commande numerique par ordinateur pour la commande de plusieurs machines-outils
TWI469849B (zh) * 2010-11-12 2015-01-21 Ind Tech Res Inst 工具機之加工法
WO2012125213A1 (fr) 2011-03-15 2012-09-20 Sloan Valve Company Robinets automatiques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833711A (ja) * 1981-08-24 1983-02-28 Fanuc Ltd 数値制御装置
JPS5960506A (ja) * 1982-09-29 1984-04-06 Fanuc Ltd 数値制御システム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9002980A1 *

Also Published As

Publication number Publication date
JPH03502143A (ja) 1991-05-16
WO1990002980A1 (fr) 1990-03-22

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