EP2188683A1 - Procédé et machine-outil virtuelle servant à représenter des actions d'une machine-outil réelle - Google Patents

Procédé et machine-outil virtuelle servant à représenter des actions d'une machine-outil réelle

Info

Publication number
EP2188683A1
EP2188683A1 EP08803148A EP08803148A EP2188683A1 EP 2188683 A1 EP2188683 A1 EP 2188683A1 EP 08803148 A EP08803148 A EP 08803148A EP 08803148 A EP08803148 A EP 08803148A EP 2188683 A1 EP2188683 A1 EP 2188683A1
Authority
EP
European Patent Office
Prior art keywords
machine tool
virtual
control
tool
program
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Withdrawn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
EP08803148A
Other languages
German (de)
English (en)
Inventor
Eberhard Beck
Matthias Eisele
Stefan Grossmann
Jörg Junginger
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.)
Index Werke GmbH and Co KG Hahn and Tessky
Original Assignee
Index Werke GmbH and Co KG Hahn and Tessky
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 Index Werke GmbH and Co KG Hahn and Tessky filed Critical Index Werke GmbH and Co KG Hahn and Tessky
Publication of EP2188683A1 publication Critical patent/EP2188683A1/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Withdrawn legal-status Critical Current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
    • G05B19/406—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 monitoring or safety
    • G05B19/4069—Simulating machining process on screen
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34303—PNC is plc, pic and nc cooperation
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/35—Nc in input of data, input till input file format
    • G05B2219/35308—Update simulator with actual machine, control parameters before start simulation
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/35—Nc in input of data, input till input file format
    • G05B2219/35311—Remote simulation of machining program
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/36—Nc in input of data, input key till input tape
    • G05B2219/36252—Generate machining program based on a simulation to optimize a machine parameter

Definitions

  • the invention relates to a method for displaying actions of machining units of a real machine tool, in particular of actions in the machining of a workpiece corresponding to a CNC machining program complex, by means of at least a first visualization unit in the form of actions virtual processing units of a virtual machine tool, in which an action control with a CNC machining program complex CNC machining control program commands for virtual machining unit actions in which an operator control with an operating program operates the action control and in which a visualization control with a visualization program based on geometric configuration data of a stored machine model and the control commands actions determined by the action control actions represents the virtual processing unit on the first visualization unit.
  • the invention is therefore based on the object to improve the accuracy in the representation of the actions of the virtual processing units on the virtual machine tool.
  • This object is achieved in a method of the type mentioned in the present invention, that the method is performed both with at least one valid for the real machine tool type type-specific configuration parameters as well as with at least one provided for the particular intended for processing the respective workpiece individual real machine tool valid individual configuration parameters ,
  • the advantage of the solution according to the invention can be seen in the fact that by adopting at least one type-specific configuration parameter and at least one individual configuration parameter, the possibility is created of operating the virtual machine tool in exactly the same way as the real machine tool, with regard to actions influenced by these configuration parameters That is a simulation under conditions of the real machine tool is possible and thus there is the possibility to comprehensively test a CNC machining program complex for a workpiece of the virtual machine tool and thus definitely reduce test times on the real machine tool and damage to the real machine tool largely avoid.
  • configuration parameters can be done in a variety of ways. For example, it is conceivable to switch or provide a data transmission line for taking over the configuration parameters, via which an acquisition of the at least one individual configuration parameter then takes place immediately before the simulation of the machining of a workpiece.
  • Such an external data carrier may be, for example, an external DVD, an external disk, or an external read-only memory or an external computer or data network.
  • the solution according to the invention has hitherto been based on at least one individual configuration parameter.
  • the method according to the invention operates with a plurality of type-specific configuration parameters.
  • control program works with type-specific configuration parameters.
  • These type-specific configuration parameters include, for example, general configuration parameters.
  • control program works with individual configuration parameters.
  • Such individual configuration parameters include, for example, axis-specific configuration parameters.
  • Such individual configuration parameters also include in particular dynamics-relevant configuration parameters.
  • the individual configuration parameters include CNC function parameters which determine the operation of the core control program, for example the look-ahead function. If, in addition to the actions of the processing units, even further functions are to be controlled, it is preferably provided that the control program operates with an additional function control program for additional functions, such additional functions being able to operate, for example, a workpiece transport or a coolant supply.
  • the type-specific configuration parameters are those that include address configuration parameters.
  • type-specific configuration parameters are those that include interrupt parameters.
  • Such individual configuration parameters include, for example, numerical function parameters. Also with regard to the operating program so far no details have been made.
  • Such type-specific configuration parameters of the operating program include, for example, channel display parameters.
  • Other type-specific configuration parameters of the operating program include, for example, coordinate system parameters.
  • the operating program is expediently provided that this works with individual configuration parameters.
  • Such individual configuration parameters include, for example, axis naming parameters.
  • control program is identical to the control program of the real machine tool.
  • control program interacts with a virtual time step.
  • the virtual time stage operates with a virtual interpolation clock that can be selected independently of the interpolation cycle of the real machine tool.
  • time intervals of the virtual interpolation cycle are expediently changed by one factor compared with the time intervals of the real interpolation cycle, wherein the factor can be both greater than 1 and less than 1.
  • Such a factor allows, for example, the time scale on which the virtual machine tool operates to stretch significantly, thus slowing down all actions in the same proportion as the actions of the real machine tool.
  • a virtual time stage it is advantageous if it has a time detection stage, with which the real time can be determined for the actions performed with the virtual interpolation clock.
  • Such a time recording stage makes it possible, for example, to determine piece times for individual machining operations or the entire machining of a workpiece on the virtual machine tool so that not only an optimization of the machining processes themselves but also an optimization with regard to the tool life on the virtual machine tool can be carried out.
  • the virtual machine tool can be particularly advantageously adapted to the real machine tool when the machine model has geometry data of the individual real machine tool.
  • Such geometry data can be formed in various ways. For example, it would be conceivable to use two-dimensional geometry data.
  • the machine model has three-dimensional geometric data.
  • the three-dimensional geometry data are derived from design data of the individual real machine tool.
  • the geometry data for the machine model is downloaded from a data carrier of a data storage unit into the machine model.
  • the geometry data is downloaded from the data carrier carrying the configuration parameters.
  • a particularly advantageous solution provides that the operating program of the virtual machine tool corresponds to the operating program of the real machine tool.
  • control program is a control program that is foreign to the machine tool so that this control program can be created according to the requirements of the simulation system.
  • the fitting program adjusts the operating program to the non-machine control program.
  • a preferred solution provides that the virtual action control program comprises the core control program of the real machine tool for generating the control commands.
  • this solution has the great advantage that it eliminates the effort of creating the core control program as an independent program. Rather, the core control program can be taken over directly by the real machine tool.
  • Such a simulation system has the advantage that it provides the possibility of carrying out the simulation with the same functions and the same functional behavior as given by the core control program of the real machine tool, and thus carrying out the simulation of the CNC machining program complex close to the machine tool, and thus as far as possible to create the real machine tool running CNC machining program complex.
  • the data processing unit of the virtual action control has a program environment to which the core control program of the real machine tool operates and generates control commands which correspond to control commands of the real machine tool, so that the virtual processing units also largely behave and correspond to the real processing units In particular, dynamic processes during the movement of the processing units relative to each other during the simulation can be tested.
  • the fitting program of the virtual machine tool in particular if the operating program corresponds to that of the real machine tool, corresponds to the communication program of the real operating control of the machine tool, so that this fitting program can also be taken over identically from the real machine tool.
  • the data processing units no further details have been given so far.
  • the simulation system according to the invention can be set up and used by a foreign machine tool, that is to say that the data processing unit of the action control, and / or the data processing unit of the operating control and / or the data processing unit of the visualization unit are non-machine-operating data processing units.
  • the data processing unit of the visualization unit uses the processor assigned to the operating control of the real machine tool. This means that in this case the simulation system uses the processor of the operating control of the real machine tool and thus the data processing unit can be operated via the operating control of the real machine tool.
  • the other data processing units can use non-machine tools.
  • the data processing unit of the operating control of the virtual machine tool uses the processor assigned to the operating control of the real machine tool.
  • the simulation system according to the invention runs completely on the operator control of the real machine tool, so that simultaneously with the operator control of the real machine tool a simulation of the CNC machining program complex can be performed.
  • one embodiment of the inventive solution provides that the visualization unit for displaying the virtual processing units and the visualization unit for displaying the virtual machine control panel are separate units.
  • This solution has the advantage that a separate visualization unit is thus available for the virtual machine control panel, in particular in order to be able to display the individual elements of the virtual machine control panel on a suitable scale.
  • a virtual machine tool for displaying actions of machining units of a real machine tool, in particular actions during the machining of a workpiece corresponding to a CNC machining program complex, by means of at least a first visualization unit in the form of actions of virtual machining units and a virtual machine control comprising action control with a CNC sets of CNC machining program complex processing control program determines commands for actions of the virtual processing units, in which an operator control with an operating program operates the action control and a visualization control with a visualization program based on geometric configuration data of a stored machine model and the action of the control Determined control commands actions of the virtual processing unit on the first Visualization represents, in which inventively the machine control determines both with at least one valid for the real machine tool type type-specific configuration parameters and at least one valid for the particular intended for processing the respective workpiece individual real machine tool individual configuration parameters, the control commands.
  • Fig. 1 is a schematic representation of a configuration of an embodiment of a real machine tool according to the invention
  • FIG. 2 shows a schematic illustration of a program configuration of the exemplary embodiment of the real machine tool according to the invention
  • Fig. 3 is a schematic representation of an assignment of
  • Configuration parameters for program configuration of the embodiment of the inventive real machine tool according to FIG. 2; 4 is a schematic representation of a configuration of an embodiment of a virtual machine tool according to the invention.
  • FIG. 5 shows a schematic illustration of a program configuration of the exemplary embodiment of the virtual machine tool according to the invention
  • Fig. 6 is a schematic representation of an assignment of
  • FIG. 7 shows a schematic representation of a first exemplary embodiment of a tool modeling system according to the invention within the program configuration of the virtual machine tool according to the invention
  • Fig. 8 is a schematic representation of a structure of a virtual vehicle
  • Fig. 9 is a schematic representation of a creation of the virtual
  • Fig. 11 is a schematic representation similar to Fig. 7 of a second
  • FIG. 12 shows a schematic illustration similar to FIG. 9 of a generation of a virtual tool according to the second exemplary embodiment of the tool modeling system according to the invention.
  • a real machine tool shown in FIGS. 1 to 3, denoted as a whole by 10, comprises a machine bed 12 on which a plurality of processing units 14i, 14 2 , 14 3 and 14 4 are arranged, which serve to machine a workpiece WS ,
  • the processing unit 14i is a workpiece spindle
  • the processing unit 14 2 is a tool carrier
  • the processing unit 14 3 is a further tool carrier
  • the processing unit 14 4 is a tailstock for supporting the workpiece WS.
  • the workpiece spindle 14i receives the workpiece WS and is able to drive the workpiece WS in rotation about a spindle axis S.
  • the tool carrier 14 2 is designed, for example, as a multi-tool carrier and carries a plurality of tools WZ, one of which can be used on the workpiece WS.
  • the tool carrier 14 2 is, for example, relative to the machine bed 12 and also relative to the workpiece spindle 14i by three mutually orthogonal NC axes, such as an X-axis X 2 , a Y-axis Y 2 and a Z-axis Z 2 with corresponding drives that is, an X-axis drive, a Y-axis drive and a Z-axis drive movable to work with the tool WZ in the working position, the workpiece WS.
  • NC axes such as an X-axis X 2 , a Y-axis Y 2 and a Z-axis Z 2 with corresponding drives that is, an X-axis drive, a Y-axis drive and a Z-axis drive movable to work with the tool WZ in the working position, the
  • the tool carrier 14 3 carries a tool WZ and, for example, along an X-axis and along a Z-axis with corresponding axle drives, that is, an X-axis drive and a Z-axis drive, relative to the workpiece spindle 14i movable.
  • the tailstock 14 4 is movable relative to the machine bed 12 along a Z-axis with a Z-axis drive to move the tailstock 14 4 for supporting the workpiece WS in the direction of the same.
  • the machine tool 10 is provided, for example, with a coolant supply 16 and a workpiece handling 18.
  • the machine tool 10 For the machining of the workpiece by moving the NC axes X 2, Y 2, Z 2, X 3, Z 3, Z 4, the machine tool 10 is provided with a designated as a whole with 20 machines controller which an action controller 30 having a first data processing unit 32 which in turn is formed by a processor 34 and a memory 36, wherein the memory 36 is formed as a memory with fast access, that is, for example, as a RAM memory.
  • an action controller 30 having a first data processing unit 32 which in turn is formed by a processor 34 and a memory 36, wherein the memory 36 is formed as a memory with fast access, that is, for example, as a RAM memory.
  • the data processing unit 32 runs, as shown in Fig.
  • the core control program 38 which is able to process CNC sets of one or more parts programs 40, for example, from the part programs 4Oi to 4O 4 , the Part programs 4Oi to 4O 4 individual channels 42i to 42 4 of the core control program 38 are assigned, which allow the parallel execution of the individual part programs 4Oi to 4O 4 , which is either independent of each other or can be synchronized by Synchronisierbetatione.
  • control commands 44i to 44 4 are determined, which serve to cause actions of the processing units 14 and to control.
  • one of the channels 42 is assigned an operation of one or more processing units 14, for example the axes of motion X 2 , Y 2 , Z 2 of the processing unit 14 2 , and a rotational speed or a rotational position of the processing unit 14i about the spindle axis S.
  • drive amplifier 45i to 45 4 and control circuits are provided for each of the channels 46i, 46 2, 46 3 and 46 4, the 48i the respective final drives 48, for example, the axis drives, 48 2, 48 3 and 48 4 , operate regulated, wherein the drive amplifier 45, the control circuits 46 and the axle 48 form a drive system 50 of the machine tool 10.
  • the control circuits 46 may be, for example, position control circuits and / or speed control loops.
  • a programmable logic controller 52 is additionally provided in the action control 30 in addition to the first data processing unit 32, which in turn can have a processor 54 and a memory 56, as memory with fast access.
  • programmable logic controller 52 are additional functions, such as the coolant supply 16 or the workpiece handling 18 controllable.
  • an additional function control program 58 which has individual sub-functions 6Oi and 6O 2 , which also serve to generate additional function control commands 64i and 64 2 , the corresponding Aktortheseen 66 1 and 66 2 are transmitted to corresponding Actuators 681 and 68 2 to control.
  • the action controller 30 is controllable by an operator control 70, designated as a whole, having a data processing unit 72, which in turn includes, for example, a processor 74 and a memory 76 for one or more CNC machining program complexes 78.
  • FIG. 2 Further runs on the data processing unit 72 as a whole with 80 designated and shown schematically in Fig. 2 operating program, which has a user interface 82, which with a whole as 90 designated machine control unit, also referred to as machine control panel cooperates, for example, includes a conventional keypad 92 and rows 94 and 96 of function keys 98i to 98 n .
  • the machine control unit 90 is preferably associated with a display field 100, which allows the display of information determined by the operating program 80.
  • the display panel 100 can be controlled by the user interface 82.
  • the operating program 80 communicates with the core control program 38 via a fitting program 84.
  • the operating program 80 further comprises, for example, a program management function designated as a whole by 102 in FIG. 2, which is able to work-piece-manage the CNC machining program complex 78 stored in the memory 76, that is to say that the program management function 102 displays the individual parts programs 40 of the CNC machining program complex 78 is managed to process part programs 40 corresponding to the respective workpiece WS according to their functional affiliation.
  • a program management function designated as a whole by 102 in FIG. 2 which is able to work-piece-manage the CNC machining program complex 78 stored in the memory 76, that is to say that the program management function 102 displays the individual parts programs 40 of the CNC machining program complex 78 is managed to process part programs 40 corresponding to the respective workpiece WS according to their functional affiliation.
  • a transfer mode 104 of the program management function 102 provides that the part programs 40 belonging to the same workpiece WS for processing this workpiece WS in their functional Associated be transferred from the control panel 70 to the action control 30 and thereby transferred workpiece related to the core control program 38, so for example, the function of the individual channels 42 of the core control program 38 assigned and activated accordingly.
  • a program processing function 112 and / or an analysis function 114 as well as a configuration function 116 and a tool function 118.
  • a parameter field 130 is provided in a program environment 132 of the core control program 38, which, as illustrated in FIG. 3, comprises core control parameters 134, which are illustrated by way of example in FIG.
  • Such core control parameters 134 may be subdivided into general parameters 136, such as timing parameters, which are, for example, the timing of the interpolator and / or the duty cycle of the position controller.
  • the general parameters 136 may, however, also include time parameters 140 which, for example, define a time of the auxiliary function output.
  • the core control parameters 134 also include axis-specific parameters 142, which include, for example, gain parameters 144, which are parameters that define the loop gain of the individual control loops 46.
  • the axis-specific parameters 142 include acceleration parameters 146, which define, for example, the maximum acceleration of the NC axes by the drive amplifiers 45.
  • the axis-specific parameters 142 include speed parameters 148, which define, for example, maximum travel speeds or maximum rotational speeds of the respective axis.
  • the axis-specific parameters 142 also include jerk parameters 150, which specify, for example, the maximum jerk of a respective NC axis.
  • axis-specific parameters 142 also include axle position parameters 152, which define the respective maximum axle positions.
  • the parameter field 130 also includes, in addition to the core control parameters 134, CNC function parameters 154, which have, for example, look-ahead parameters 156 for the individual NC axes.
  • a look-ahead view of the tool path is referred to as a look-ahead function, which reduces the feed to corners and edges in a timely and automatic manner to a permissible extent for the maximum permissible path deviation, this function being characterized by at least one preferably several look-ahead parameters 156, such as the feed rate and / or maximum path deviation, can be fixed.
  • the additional function control program 58 is also assigned a parameter field 160, in which as a whole 162 additional function parameters are provided, with which the additional function control program 58 operates.
  • the additional function parameters 162 comprise, for example, SPS parameters 164, which in turn have, for example, address parameters 166 for an input / output of information and / or numerical function parameters 168 or interrupt parameters 170.
  • the additional function control program 58 can thus be adapted to the respective machine tool.
  • the operating program 80 also comprises a parameter field 180 which has operating parameters 182 which serve to adapt the operating program 80 to the respective specific machine tool.
  • Such operating parameters 182 include, for example, display parameters 184, which in turn have, for example, channel display parameters 186, axis name parameters 188 and coordinate system parameters 190.
  • Both the core control parameters 134 and the additional function parameters 162 and the operating parameters 182 include type-specific, that is provided for the respective machine type parameters, as well as individual parameters, that is, on the individual machine tool, for example, identified by their serial number, related individual parameters, the Adjust control functions to the specific machine tool 10 that is specifically equipped.
  • the general parameters 136 are typically type-specific configuration parameters
  • the axis-specific parameters 142 as well as the CNC function parameters 154 are individual configuration parameters.
  • the individuality in the axis-specific parameters 142 is due to the fact that, for a specific machine type, for example, a ball screw deviating from the standard equipment of the machine type has been installed in order to achieve higher feed forces, in which case the acceleration parameters 146 at least for this NC -Axis adjusted, eg chosen lower.
  • the individuality in the axis-specific parameters 142 may also be due to processing units 14 deviating from the standard equipment of a machine type, which require an adaptation of the gain parameters 144 and / or the speed parameters 148.
  • the CNC function parameters 154 may be selected differently from standard values of a machine type, depending on how accurate a user-specific manufacturing process is, so that the look-ahead parameters 156 are adapted according to the arithmetic operations to be performed.
  • the additional function parameters 162 for example in the form of the address parameters 166 and the interrupt parameters 170, also include type-specific configuration parameters, while, for example, the numerical function parameters 168 represent individual configuration parameters.
  • additional functions are often deviating from a standard equipment of a machine type. For example, the workpiece handling is often individually tailored to the workpiece to be machined WS, whereby individual, for example, tuned function parameters 168 are necessary.
  • the operating parameters 182 also include type-specific configuration parameters, namely, for example, the channel representation parameters 186 and the coordinate system parameters 190, while the axis designation parameters 188 represent individual configuration parameters.
  • the axis designations are also individually adapted, so that in these cases the axis designation parameters 188 also deviate from a standard designation of a machine type.
  • the operating controller 70 is assigned an external data storage device 200 with a transportable data carrier 202, in which a configuration parameter transfer mode 122 the configuration function 116 of the operating program 80, a storage of all configuration parameters 134, 154, 162 and 182 is possible.
  • a configuration parameter transfer mode 122 the configuration function 116 of the operating program 80 a storage of all configuration parameters 134, 154, 162 and 182 is possible.
  • a virtual machine tool, generally designated V10, shown in FIGS. 4 through 6 includes a machine control, generally designated V20, having an action control V30 including a first data processing unit V32 having a processor V34 and a memory V36 V36 is designed as a memory with fast access.
  • a core control program designated as a whole by V38 which in the simplest case is identical, as the core control program 38 of the real machine tool 10, but in any case is capable of, the CNC To process sets of one or more part programs 40, for example also from the part programs 4Oi to 4O 4 , in the same manner as the core control program 38, wherein the execution of the part programs 4Oi to 4O 4 in the same way as in the core control program 38 in individual channels V42i to V42 4 of the core control program V38 is carried out, so that a parallel execution of the individual part programs 4Oi to 4O 4 is possible, which takes place either independently of each other or synchronized by Synchronisierbetatione.
  • control commands V44i to V44 4 are determined, which correspond in principle to the control commands of the real machine tool 10, but possibly run on a different time scale.
  • control commands V44i to V44 4 serve to cause virtual processing units V14i to V14 4 to act, wherein the virtual processing units V14i to V14 4 are displayed by a visualization unit 210, for example on a screen 212 of the visualization unit 210.
  • the representation of the virtual processing units V14 relative to a virtual machine bed V12 by the visualization unit 210 takes place by means of a visualization controller 220, which has a further data processing unit 222, which in turn has a processor 234 and a memory 236 in which a visualization program 238 and a machine model 240 and a tool modeling system 250 are present.
  • the visualization program 238 is designed in such a way that the individual processing units V14 of the real machine tool are displayed on the visualization unit 210 by means of the machine model 240, preferably the three-dimensional geometry data of the machine model 240, generated machine configuration data 240 as identical as possible to the real processing units 14 of the real machine tool 10. It is particularly advantageous if the machine model 240 has stored the three-dimensional geometry data of all the machining units 14 and the machine bed 12 present in the real machine tool 10 and from this machine configuration data 242 are generated and transmitted to the visualization program 238.
  • the tool modeling system 250 is preferably designed such that it is capable of providing the visualization program 238 with tool configuration data 252 with which the visualization program 238 assigns the virtual tools VWZ to individual tool stations of the processing units V14.
  • the visualization program 238 is able to display actions of the virtual processing units V14 on the visualization unit 210, in particular the screen 212 thereof, corresponding to the control commands V44, namely movements corresponding to the real NC axes X, Y, Z along the virtual NC Axes VX, VY, VZ.
  • the visualization program 238 preferably operates such that virtual control commands V44, which are identical to real control commands 44, generate movements of the virtual processing units V14 corresponding to the virtual NC axes VX, VY, VZ, which correspond to the movements of the real processing units 14, taking into account a representation scale ,
  • the action control V30 is still one Programmable controller V52 assigned, which in turn has a processor V54 and a memory V56, in particular designed as memory with fast access.
  • Additional functions can also be simulated with the programmable logic controller V52 in the same way as in the case of the real machine tool 10, such as, for example, the operation of a virtual coolant supply V16 or a virtual workpiece handling V18, both of which can also be displayed on the screen 212 of the visualization unit 210 in the same way as the processing units V14, namely by geometry data stored in the machine model 240.
  • an additional function control program V58 is provided, which has individual sub-function programs V60, for example, the sub-function programs V60i and V60 2 , which also serve to generate additional function control commands V64i and V64 2 , then the Visualization program 238 are transmitted.
  • the action control V30 is further controllable by an operator control designated as a whole by V70, which has a data processing unit V72, which in turn for example comprises a processor V74 and a memory V76 for one or more CNC machining program complexes 78.
  • the machining program complexes 78 for the virtual machine tool V10 are constructed and designed in an identical manner as the real CNC machining program complexes 78 of the real machine tool 10. in order to have the possibility of being able to test one and the same CNC machining program complex 78 on the one hand on the virtual machine tool V10, on the other hand then being able to use it unchanged on the real machine tool 10 for processing a real workpiece WS.
  • the screen V99 can also be identical to the screen 212 of the visualization unit 210, so that both the machine control unit V90 and the virtual processing unit V14 can be displayed side by side on a single screen, for example.
  • the machine control unit V90 is preferably also associated with a display field V100 shown on the screen V99, which enables the display of information transmitted by the operating program V80.
  • the display field V100 can be controlled by the user interface V82.
  • the operating program V80 comprises, for example, at least the program management function also present in the real machine tool 10 and designated as a whole by V102 in FIG. 5 with a transfer mode V104 which operates identically to the real machine tool 10.
  • the operating program V80 communicates with the core control program V38 via a fitting program V84.
  • the operating program V80 can have all functionalities, as described, for example, in German patent application DE 10 2005 045 028 A1.
  • the core control parameters 134 may be the same as the core control parameters used in the real machine tool 10.
  • the kernel control parameters 134 include the type specific configuration parameters, such as the general parameters 136, as these are specific to the particular type of machine tool 10.
  • all dynamically relevant configuration parameters are preferably also present in the parameter field V130, in particular the axis-specific parameters 142 and the CNC function parameters 154, since these are responsible for the speed of execution of the NC blocks in the simulation of a machining of a workpiece WS by processing a virtual workpiece VWS by means of the machining program complex 78 are essential.
  • parameter field V130 of the virtual machine tool V10 all configuration parameters that are also present in the parameter field 130 of the real machine tool 10 are preferably included.
  • additional function control program V58 is also assigned a parameter field V160, which is suitable for receiving the additional function parameters designated 162.
  • all type-specific additional function parameters 162 such as axis parameter 166 or interrupt parameter 170, are present in the parameter field V160.
  • the additional functions are also to be taken into account and thus simulated in the simulation of the machining program complex 78, it is also necessary for the individual configuration parameters, such as axis designation parameters 188, to be present in the parameter field V160 in order to perform the additional functions in the same manner in the case of the virtual machine tool V10 to be able to work off, as in the real machine tool 10.
  • the operating program V80 is also provided with a parameter field V180, in which the operating parameters 182 can be stored, which are used to adapt the operating program V80 to the respective virtual machine tool V10.
  • a configuration function V116 of the operating program V80 is equipped with a configuration parameter transfer mode V124 which is capable of outputting the individual configuration parameters 142, 154, 168, 188 assigned to the very specific real machine tool 10 from an external data storage device V200, for example before a first start of the simulation the external data carrier V202 of the external data storage device V200 read and write in the parameter fields 130, 160, 180 of the virtual machine tool V10.
  • a virtual machine tool VIO adjusted, for example, to a type-specific virtual machine tool V10 is a virtual machine tool V10 adjusted to at least substantial configuration parameters of a single individual real machine tool 10.
  • the configuration parameters present in the real machine tool 10 can be simply transferred to the virtual machine tool V10.
  • the configuration parameter transfer mode V124 writes all configuration parameters present in the storage device V200 into the parameter fields 130, 160, 180.
  • the core control program V38 is assigned a virtual time step 260 which includes an interpolator clock 262 for generating a virtual interpolator clock VIT and a time acquisition unit 264 for converting virtual clock intervals generated by the virtual interpolator clock into real-time intervals and thus converting the virtual time VT into a real time RT.
  • the real time RT is output, for example, via the operating program V80 in the display field V100 of the operating program V80.
  • the interpolator clock 262 of the virtual timer 260 is capable of generating a virtual interpolator clock VIT at which the clock intervals deviate from the clock intervals of the real interpolator clock IT, for example being significantly larger than the intervals of the real interpolator clock IT.
  • the simulation based on the virtual interpolator clock VIT of the interpolator clock 262 can be carried out, for example, in a time-delayed manner in order to allow the operator to In this investigation, due to the virtual interpolator cycle and the individual adaptation of the machine model 240 as well as the adoption of the individual configuration parameters, the processing units V14 move in each case just as relative to each other as in reality.
  • the time recording stage 264 still provides the possibility of directly determining the real time RT directly from the virtual time VT, so that not only collisions of processing units V14 can be determined in the simulation of the processing of a virtual workpiece VWS by means of a CNC machining program complex also sentence run times for the execution of CNC sets or even times of the respective workpiece VWS, which correspond due to the conversion of the virtual time VT in a real time RT the block run times of processing a real workpiece WS on a real machine tool 10, so that the virtual Even when simulating a CNC machining program complex 78, VlO machine tool also allows statements about the block run times or piece times and thus also an optimization of the piece times.
  • the design of the tool modeling system 250 no further details have been given in connection with the previous explanation of the solution according to the invention.
  • a first advantageous exemplary embodiment of the tool modeling system 250 shown in FIG. 7 provides that the latter has a tool model 270 in which three-dimensional geometry data of individual components are stored, from which virtual tools VWZ can be constructed.
  • the tool modeling system 250 includes tool data V280 containing information about actual dimensions of the virtual tool VWZ, wherein these actual dimensions of the virtual tool VWZ are essential for machining the virtual workpiece WS and are taken into account by the core control program V38 when executing the CNC sets the tool data V280 is stored together with the CNC machining program complex 78 in the memory V76 provided therefor.
  • the tool modeling system 250 also includes a tool configuration data generator 290, which configures the tool configuration data 292 from the tool model 270 and the tool data 292, which are transferred to the visualization program 238, so that this virtual tools VWZ configured in connection with the virtual machine tool V10 corresponding to the tool data V280 into the individual tool positions of the virtual processing units V14.
  • a virtual tool VWZ is shown by way of example in FIG. 8, which is a so-called three-dimensional geometry model.
  • Such a virtual tool VWZ comprises a tool holder identified as a whole by 300 and identifiable by a tool identification number, which is formed from a tool holder body 302 which has, for example, a holding shank 304 with which the tool holder body 302 is fixed in a tool holder of a processing unit V14.
  • the tool holder body 302 has a contact surface 306 with which it can be applied to a support surface of the processing unit V14, for example a tool turret or a different type of tool carrier.
  • the holding element 304 and the tool holder body 302 are firmly connected to each other and form a coherent unit.
  • a tool holding shaft 308 as a whole can be used, wherein the tool holding shank 308 in a receptacle 310 of the tool ha Iter stressess 302 can be mounted in various positions relative to the tool holder body 302.
  • the tool holding shank 308 carries a cutting element 312, for example an insert whose cutting edge 314 is used for machining.
  • a cutting element 312 for example an insert whose cutting edge 314 is used for machining.
  • essentially two dimensions of the cutting edge 314 are decisive, namely a length dimension L1, which indicates the position of the cutting edge 314 over the abutment surface 306, and a length dimension L2, which indicates the position of the cutting edge 314 relative to an axis 316 that is perpendicular to the abutment surface 306 and centered by the retainer 304.
  • the three-dimensional geometric data of the tool holder body 302 with the contact surface 304, and that of the tool holding shaft 308 and that of the cutting plate 312 are stored in the tool model.
  • the length measures L1 and L2 correspond to the tool data V280, and the tool configuration data generator 290 forms the tool configuration data 292 of the virtual tool VWZ from the three-dimensional geometry data of the tool holder body 302, the tool holding shaft 308, the insert 312, and the length measures L1 and L2, which are then transferred to the visualization program 238 become.
  • the operator control 180 is provided with a tool function V328 which enables tool data V280 to be directly input to the tool modeling system 250 in a tool data entry mode V322 and then in a tool generation mode 324 to the tool configuration data generator 290 to generate the tool configuration data 292 in order to be able to display the virtual tool VWZ on the screen 212 of the visualization unit 210 by means of the visualization program 238.
  • the tool data 280 stored in connection with the machining program complex 78 corresponds to the real tool data 280 when the operator has already set up the tools WZ on the real machine tool 10 and measured them at a measuring station, and these tool data 280 are then stored in the memory 76 corresponding to the CNC. Associated machining program complex 78.
  • the construction and the measurement of the real tools WZ takes place in most cases immediately before the machining of a real workpiece WS in the real machine tool 10.
  • the tool data 280 of the real tools are also determined at the measuring location immediately before the machining of the workpiece WS and stored with the tool data input mode 322 of the tool function 118 of the operating program 80 in the memory 76 associated with the machining program complex 78.
  • the real tool data 280 are also taken over into the memory V76.
  • the tool data transfer mode V326 enables Transfer of the real tool data 280 from the memory V76 into the tool modeling system 250 so that the real tool data 280 is present in the latter and used to generate the tool configuration data 292. This means that the input of the tool data 280 into the tool modeling system 250 takes place by way of the data transfer of the real tool data 280 from the memory V76 and can be used directly to generate the tool configuration data 292.
  • a tool data generation mode V328 of the tool function 118 based on the three-dimensional geometry data of the tool model 270, first to determine the individual components of the tool holder 300, ie, for example, the tool holder body 302, the holding element 304 Tool holding shaft 308 and the cutting plate 312 graphically, for example, on the display panel V100 of the machine control panel V90 and position relative to each other, so that solely by manual relative positioning of the tool holder body 302, the tool holder shaft 308 and the cutting plate 312, the virtual tool VWZ arises.
  • the tool data V280 in the tool modeling system 250 can then also be transferred from the tool modeling system 250 to the memory V76 and assigned to the CNC machining program complex 78 with the tool data transfer mode V326, so that the core control program V38 also performs the simulation Tool data V280 is generated, which were generated by the tool modeling 250 with the tool data generation mode 328 and thus also takes place the control of the individual actions taking into account this virtual tool data V280.
  • the tool model 270' does not comprise exact geometry data of the individual components for constructing a virtual tool VWZ, but geometrical solids from which individual solids are selected and their dimensions entered by the operator can be.
  • the tool configuration data generator 290 does not generate tool configuration data 292 that is substantially identical to the real tool but tool configuration data 292 'that results in a virtual tool VWZ' that is exact in the tool data, in particular the lengths L1 and L2. however, its tool holder body 302 'and its tool holding shank 308' may differ significantly from the actual physical conditions.
  • the tool data V280 can also be input in the same way in this embodiment, as shown in connection with the first embodiment.

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

L'invention concerne un procédé servant à représenter des actions effectuées par des unités d'usinage appartenant à une machine-outil réelle, en particulier, des actions d'usinage d'une pièce d'usinage en fonction d'un ensemble de programmes d'usinage CNC, au moyen d'au moins une première unité de visualisation, sous forme d'actions effectuées par des unités d'usinage virtuelles appartenant à une machine-outil virtuelle, selon lequel une commande d'action comportant un programme de commande traitant des données CNC de l'ensemble de programmes d'usinage CNC, transmet des instructions en vue d'actions à effectuer par lesdites unités d'usinage virtuelles, selon lequel une commande d'opération comportant un programme d'opération supervise la commande d'action et selon lequel une commande de visualisation possédant un programme de visualisation représente des actions de l'unité d'usinage virtuelle sur ladite première unité de visualisation à l'aide de données de configuration géométrique d'un modèle de machine mémorisé, ainsi que des instructions transmises par la commande d'action, dans le but d'améliorer la précision de représentation des actions des unités d'usinage virtuelles sur la machine-outil virtuelle. Ce procédé est exécuté aussi bien avec au moins un paramètre de configuration valable pour le type de la machine-outil réelle qu'avec au moins un paramètre de configuration individuel valable pour la machine-outil réelle individuelle spécialement prévue pour l'usinage de la pièce d'usinage respective.
EP08803148A 2007-09-14 2008-08-21 Procédé et machine-outil virtuelle servant à représenter des actions d'une machine-outil réelle Withdrawn EP2188683A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007045595A DE102007045595A1 (de) 2007-09-14 2007-09-14 Verfahren und virtuelle Werkzeugmaschine zur Darstellung von Aktionen einer realen Werkzeugmaschine
PCT/EP2008/060983 WO2009037065A1 (fr) 2007-09-14 2008-08-21 Procédé et machine-outil virtuelle servant à représenter des actions d'une machine-outil réelle

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EP2188683A1 true EP2188683A1 (fr) 2010-05-26

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EP (1) EP2188683A1 (fr)
CN (1) CN101836169A (fr)
DE (1) DE102007045595A1 (fr)
WO (1) WO2009037065A1 (fr)

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TWI500475B (zh) * 2012-12-13 2015-09-21 Ind Tech Res Inst 幾何定位裝置及其方法
CN103048952B (zh) * 2013-01-22 2016-04-27 北京数码大方科技股份有限公司 机床加工代码的验证方法、装置及系统
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CN106742402B (zh) * 2016-11-22 2019-02-22 杭州师范大学 一种基于机械自由度的机械模型包装方法
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DE102007045595A1 (de) 2009-03-26
WO2009037065A1 (fr) 2009-03-26

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