CN106202767A - A kind of real-time collision-proof method of Digit Control Machine Tool - Google Patents
A kind of real-time collision-proof method of Digit Control Machine Tool Download PDFInfo
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- CN106202767A CN106202767A CN201610566428.1A CN201610566428A CN106202767A CN 106202767 A CN106202767 A CN 106202767A CN 201610566428 A CN201610566428 A CN 201610566428A CN 106202767 A CN106202767 A CN 106202767A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
Abstract
The present invention discloses and achieves a kind of relevant Digit Control Machine Tool real-time collision-proof method weak to digital control system; by Digit Control Machine Tool three-dimensional processing on real-time emulate and collision avoidance system gather digital control system signal of interest and in software system predictive algorithm process signal of interest rear drive Virtual Numerical Control Machine Tools emulate; the illegal collision occurred in operator's operating numerical control lathe or the course of processing or interference are carried out estimating emulation and carrying out alarm, returns digital control system stopping signal and carry out lathe protection.
Description
Technical field
The present invention relates to the Digit Control Machine Tool field in equipment manufacture, more specifically, the present invention relates to Digit Control Machine Tool in work
Machining simulation during work, carries out two-way communication realization to numerical control by Virtual Machine simulation work process and with digital control system
The guarantee of lathe and protection.
Background technology
Along with the development of Computerized Numerical Control processing technology and the process requirements of complex-curved structure that day by day increases, many number of axle
Control processing scheme such as Multi-axis simultaneous machining, turnning and milling be combined etc. be increasingly widely applied.But, complicated processing object pair
Technological level in planning, optimization and the operator of process tool route is proposed higher requirement.Although the most very
Many commercial CAM softwares all have the process tool route NC code building function of some versatilities, but these cutter paths lack
The weary consideration for concrete machine tool motion chain structure.Accordingly, it is possible to cause in processing cutter and machine tool component (fixture, workpiece) it
Between collision, and cause the drastically change of machine tool feed axle acceleration, thus bring impact.The machining accuracy of Multi-axis Machining lathe
Height, cost intensive, once there is severe impact or collision, the most then destroy machine tool accuracy, heavy then direct defective work piece and lathe.
Especially in commercial production, the Digit Control Machine Tool course of processing once collides, often causes the production schedule to postpone, to enterprise and
Individual causes economic loss, the most also the personal safety of machine operation personnel can be brought threat.Therefore, digital control processing is collided
Detection and necessary armour significant.At present, main virtual manufacture emulation (such as Vericut etc.) using off-line is entered
The checking in row processing tool tool path.When virtual manufacture arranges inconsistent with true environment, the result credibility is substantially reduced.
Especially manual operations pattern under, to numerical tool operation personnel directly operate and be manually entered amendment numerical control program cannot enter
Row simulation, off-line simulation checking is helpless.Some methods based on physical sensors region be directly facing the work of true lathe, shooting
Processing space can be monitored by head and laser sensor, but is limited by their efficient working range；Based on main shaft electricity
There is hysteresis quality in stream power detecting method, it is impossible to ensures the avoidance of collision.
Collision in the course of processing identifies that with protection be the intelligentized development trend of lathe automatically, the most in the world one
A little lathe manufacturers have released this kind of function.Such as the Collision integrated with OSP digital control system of OKUMA exploitation
Avoidance System is capable of manually and the emulation of the course of processing and collision detection under automatic mode, and is applied to turning
Center and turn-milling complex machining center etc.；The Intelligent safety of PC Yu the CNC hardware integration of Mazak exploitation
Shield system achieves the machining process simulating under manually and automatically pattern and crash protection, it is possible to be applied in Compound Machining
The heart, turning center and Five-axis NC Machining Center etc.；The MfgSuite Numerical Control Simulation software that moral Margie gloomy essence machine is released has been applied to
The series lathe such as NMV, DuraTurn/DuraVertical, it is possible to realize machining process simulating and the collision of the automatic course of processing
Detection.These softwares are all the most integrated with machine tool numerical control system, thus realize online real time collision detection and protection.Domestic absolutely
The digital control system that most of lathe manufacturers use is all import external system, due to the closure of external high-end digital control system,
Wanting to grasp completely the logical relation of digital control system, operating mechanism, difficulty is very big, so being difficulty with digital control system and three-dimensional void
Intending the communication of lathe, technical difficulty is bigger.
Summary of the invention
It is an object of the invention to the intelligent collision protection for realizing lathe, it is proposed that a kind of real-time anti-collision of Digit Control Machine Tool
Hit method, develop the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system.By gathering necessity with digital control system communication
Signal, drives Virtual Machine to carry out synchronization simulation, is predicted for the collision between parts and the interference between cutter and workpiece,
And collision alarm is returned digital control system execution stoppage protection.
The technical scheme is that and be achieved in that:
A kind of real-time collision-proof method of Digit Control Machine Tool, uses the Digit Control Machine Tool three-dimensional processing on real-time emulation that plug-in main frame is installed
And the carrying out the mode of two-way communication with digital control system and carry out collision protection of collision avoidance system, Digit Control Machine Tool prepares, and connects numerical control
System PCU factory Ethernet interface and plug-in HPI；Run the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system,
Start communicating and emulating of the emulation of digital control system and Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system；Digit Control Machine Tool is normally transported
OK, normally cutting, the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system gather digital control system signal rear drive virtual machine
Bed carries out motion simulation and cutting simulation；Carrying out collision detection in simulation process, as detected collision, system is highlighted generation
The parts interfered, and at plug-in main frame screen prompt collision information, return collision alarm by digital control system communication module simultaneously
To digital control system, digital control system stoppage protection；Readjust lathe and operate machine safety operation to safe condition.
The emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system include six functional modules, respectively man-machine interaction mould
Block, lathe model data module, three-dimensional rendering environment module, real time collision detection module, Machinetool workpiece real-time simulation cutting mould
Block, digital control system communication module.Digital control system communication module gathers digital control system signal driving bed model and carries out motion simulation,
At terminal demonstration after three-dimensional rendering environment renders, touch through real time collision detection module when lathe is driven
Hit detection, carry out workpiece cutting simulation by workpiece real-time simulation cutting module.
Described human-computer interaction module, is created interface by the Ribbon pattern of MFC based on message mechanism；The blank at interface
Import and final workpiece imports menu and is used for loading blank model and final workpiece, and complete by backstage real time collision detection module
Become the loading of workpiece collision model, completed the pretreatment to blank by lathe real-time cutting module and passed through three-dimensional environment simultaneously
Workpiece is rendered by rendering module, communication connection dialog box complete digital control system and the connection of digital control system communication module.
Described lathe model data module, Virtual Machine uses and the triangle surface model of 1:1 in kind, then passes through
3ds Max carries out 1:1 assembling, derives .x formatted file and supplies the api interface reading of DirectX 9.0 to call；Pass through three-dimensional rendering
Environment module completes Virtual Machine is rendered display, calls the motion level knot of lathe model data module while rendering
Structure algorithm, completes the foundation of machine tool component Motion sub tree, for gathered by digital control system communication module during follow-up real-time simulation
Signal is driven being used.
Described three-dimensional rendering environment module, builds based on DirectX 9.0 3-D graphic kit；Virtual Machine
The change of viewpoint angles, when colliding, parts is highlighted, and in workpiece working angles, the real-time change of workpiece, is all based on three-dimensional
The rendering intent of rendering contexts module completes.
Described real time collision detection module, collision detection algorithm is based on the OBB spatial level OBBs algorithm improved；
The position signalling of digital control system communication module collection estimates interpolation algorithm by based on Virtual Machine position, is estimating motion appearance
Under state, the interference detection between machine tool element and fixture or workpiece uses efficient collision detection algorithm to complete, and by collision letter
Number return digital control system by communication module.Native system sets two types for the collision of workpiece: blank and final piece
Collision.The collision that blank relates to has blank and the collision of cutter, handle of a knife, main shaft and machine tool component.Final piece relates generally to
The illegal collision cutting generation crossed by final workpiece by cutter.
Described Machinetool workpiece real-time simulation cutting module, uses dexel structure to carry out pretreatment, and working angles passes through work
Real-time boolean between part model and cutter solid cuts computing and completes；Make alert process for crossing the state of cutting, and pass through
Digital control system communication module completed to cut signal and returns and perform protection.
Described digital control system communication module, uses digital control system communication means based on OPC UA specification, sets up lathe
Digital control system server end and client, realize the reading to parameters of interest and write, Jin Ertong by the operation of client
Cross the write protection to digital control system after anticipation interpolation algorithm in position realizes the driving to virtual emulation lathe and collides.
The present invention is applied to Digit Control Machine Tool field, and machine tool numerical control system emulates by connecting Digit Control Machine Tool three-dimensional processing on real-time
And collision avoidance system realizes the anti-collision in machine tooling operating process.Being invented by this, machine operation personnel can be more
It is processed absorbedly, has saved digital control processing time.Barrier avoiding function intelligentized for Digit Control Machine Tool is a kind of effective
Explore and attempt.
Accompanying drawing explanation
Fig. 1 is the emulation of Digit Control Machine Tool three-dimensional processing on real-time and the functional module composition diagram of collision avoidance system；
Fig. 2 is the work operational flow diagram of the real-time collision-proof method of a kind of Digit Control Machine Tool；
Fig. 3 is the model sketch of lathe model data module loading.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described, the present invention be Virtual Numerical Control Machine Tools based on
OPC UA framework specification and digital control system carry out two-way communication through processing the predictive algorithm of input signal and then driving virtual
Lathe three-dimensional artificial illegal collision and interference realization to occurring in the course of processing are reported to the police and are finally realized true Digit Control Machine Tool
Ensure and protect.
Embodiment
1. Fig. 1 is the emulation of Digit Control Machine Tool three-dimensional processing on real-time and the functional module composition diagram of collision avoidance system.
In the present embodiment, as it is shown in figure 1, the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system include man-machine friendship
Mutually module, three-dimensional rendering environment module, lathe model data module, real time collision detection module, workpiece real-time cutting module and
Digital control system communication module.This system, by gathering digital control system necessary signals, drives virtual by position anticipation interpolation algorithm
Lathe emulates, and is predicted for the collision between parts and the interference between cutter and workpiece, and is returned by collision alarm
Digital control system performs stoppage protection.
Human-computer interaction module, the simulated environment of the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system can realize using
Family to load lathe model movement, amplify, reduce, the interactive controlling such as rotation；Can realize under off-line state Virtual Machine
Moving component flash demo, tool magazine action flash demo, demonstrate real-time cutting function, anti-collision；Blank work can be supported
Part and the importing of final workpiece；Can dynamically change tool magazine tool category, gauge size；Support and digital control system communicates people
Machine is arranged alternately.It is few that simulated environment requires that render process consumes resource, and user's interactive controlling is convenient succinct, it is ensured that emulation real-time
Property.
Lathe model data module, the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system are for ensureing and true lathe
The concordance of the course of processing, and in view of rendering and the calculating speed of the most ripe efficient collision detection algorithm, lathe (cutter
Storehouse, fixture, workpiece) all use and the triangle surface model of 1:1 in kind；The type of sports one of each moving component of Digit Control Machine Tool
As only two classes, linear motion and rotary motion, the therefore Kinematic Model of Virtual Numerical Control Machine Tools lathe to be set up each motion portion
The relative motion relation of part, sets up kinematic pair (moving sets or revolute pair)；Set up the hierarchical relationship of each relative motion of lathe, it is ensured that
Motion unidirectional delivery from father node to child node；Build and characterize movement relation and the matrix of hierarchical relationship, in virtual environment
Realize the emulation of machine tool component motion with the operation to matrix, structure tree model is easy to be completed the data of whole machine model by recurrence
Driving, the motion affiliation between machine tool element is expressed by tree construction.
Three-dimensional rendering environment module, Digit Control Machine Tool three-dimensional processing on real-time emulation and collision avoidance system rendering contexts based on
DirectX 9.0 3-D graphic kit builds, and can arrange the information such as the illumination of machine tool environment, material, video camera, enter
And realize the Virtual Machine optimization from visual angle, the high-brightness of parts when colliding, it is achieved workpiece in workpiece working angles
Real-time change, the conversion of camera angle can be realized by heavy duty response events, thus Virtual Machine is realized from vision
On comprehensive observation.
Real time collision detection module, the collision detection module of the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system makes
With OBB spatial level OBBs algorithm based on rigid body, it is possible to achieve Virtual Machine collision detection.Due to from digital control system collection
The delay produced in signal and transmitting procedure, present invention use is based on Virtual Machine position estimates interpolation algorithm, is estimating fortune
Under dynamic attitude, the interference detection between machine tool element and fixture or workpiece can use efficient collision detection algorithm to complete；And
Collision alarm is returned digital control system by communication module.Native system sets two types for the collision of workpiece: blank
Collision with final piece.The collision that blank relates to has blank and the collision of cutter, handle of a knife, main shaft and machine tool component.Final piece
Relate generally to cutter and final workpiece is crossed the illegal collision cutting generation.Other illegally collision kinds be cutter and fixture or lathe portion
The collision of part, main shaft and the collision of workpiece, fixture or machine tool component, handle of a knife and the collision of workpiece, fixture or machine tool component.
Machinetool workpiece real-time simulation cutting module, the workpiece of the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system is real
Time cutting simulation use dexel structure carry out pretreatment；Complete the real-time boolean cutting between part model and cutter solid
Computing；Cutting simulation module realizes the detection interfered between cutter non-cutting section and workpiece first, and makes alert process.For
The protection of final workpiece, the present invention prevents from workpiece from crossing cutting by importing final mask, it is achieved the protection to final workpiece.
Digital control system communication module, the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system and machine tool numerical control system
Communication uses digital control system communication means based on OPC UA specification, sets up machine tool numerical control system server end and client, logical
The operation crossing client realizes the reading to parameters of interest and write (client-side program is write flow process and seen Fig. 2), and then passes through
Anticipation interpolation algorithm in position realizes the driving of virtual emulation lathe and the write protection after colliding.
2. below anticipation interpolation algorithm is described briefly: communication module is with cycle ToAt ti-1Moment is to machine tool motion position
Putting information, this information calculates through collision detection and workpiece real-time cutting, and the collision alarm of acquisition once leads to upper
Just can be delivered to digital control system during letter event, and need lathe to experience TpRealize stoppage protection.Therefore, it is input to perform from signal
The cycle of stoppage protection is Te=To+Tp.Here it is collision occurs to need to shut down response during collision protection system is the most truly processed
Lag time.Therefore, collision protection system is at tiSampling, needs to use TeMachine tool motion position after moment carries out collision inspection
Survey, can ensure that collision information meets with a response at lathe end.TeThe machine tool motion position P of prediction after momentpre,iCan pass through
ti-2,ti-1And tiThe collection position P in momenti-2,Pi-1And PiDifference approximation obtains.
Ppre,i=Pi+ViTe+0.5aiTe 2
Wherein
VMAXAnd aMAXIt is respectively maximal rate and the peak acceleration of each feed shaft.
3. Fig. 2 is the workflow diagram of the present embodiment, and Fig. 3 is the simplification figure of the Digit Control Machine Tool that the present embodiment carries out emulating.
In conjunction with Fig. 2 and Fig. 3, the workflow of the present embodiment is described in detail.
The simulation object of the present embodiment is horizontal four-axis numerical control machining center, as it is shown on figure 3,1 represents bracket, 2 expressions
Frame, 3 represent workbench, and 4 represent handle of a knife, and 5 is tool change arm, and 6 is tool magazine, and 7 is main shaft, and 8 is main spindle box, and 9 is column, and 10 is bed
Body.As shown by arrows, magazine, 40, cutter, employing digital control system is for X, Y, Z axis and the rotation B axle direction of motion
SINUMERIK 840D sl.Model lathe model by 3 d modeling software (proe or SolidWorks etc.) 1:1, pass through 3ds
Max assembling model, derives .X file, then by API Calls this document of directX 9.0.The most same machine of cutter modeling process
Bed model modeling configuration process.Lathe information is configured, including machine tool travel parameter, tool magazine tool-changing speed, master by configuration file
Axle loads acquiescence cutter parameters etc..By tooling setup file configuration tool magazine correspondence cutter tool-information, support tool type, cutter
Tool parameter etc..The present embodiment collision detection proposes two kinds of collision status for the collision of workpiece and cutter, workpiece blank for
Collision when main shaft is not opened, the illegal collision cut crossed by final workpiece for cutter；Other illegally collide kind is cutter and folder
Tool or the collision of machine tool component, main shaft and the collision of workpiece, fixture or machine tool component, handle of a knife and workpiece, fixture or machine tool component
Collision.
Connected factory's Ethernet interface of digital control system PCU, configuration of IP by netting twine, run Digit Control Machine Tool three-dimensional the most imitative
True and collision avoidance system.
3.1 off-line demonstrations: click the operation setting button at Ribbon interface, eject nonmodal demonstration dialog box, this dialogue
Frame supports that the flash demo to lathe, demonstration include the forward and reverse motor performance of X, Y, Z, B axle, and the forward and reverse rotation of main shaft, main shaft stops
Only, manual tool changing, automatic tool changer process, workbench exchange process etc..In machine tool component motor process, real time collision detection mould
Block can detect collision status in real time, can point out collision information and be highlighted the work package collided when colliding.When drilling
When showing cutting, Tool in Cutting workpiece, workpiece can show the change procedure of workpiece in real time according to the cutting state of cutter Yu workpiece,
During this and real time collision detection.
3.2 on-line operations: click the communications setting button at Ribbon interface, eject nonmodal communication session frame, select number
Ore-controlling Role version, the IP address of input PCU, click connection.By OPC UA specification, communication module gathers digital control system signal,
The present invention gathers X, Y, Z, B shaft position information and the speed of mainshaft and current cutter information, supports lathe tool changing and by this
System carries out flash demo.Native system drives corresponding machine tool component by the signal message gathered through position anticipation interpolation algorithm
Motion animation present, and collision detection carries out collision detection to the position after anticipation simultaneously, and if there is collision, native system is highlighted
Display collision work package also points out collision information, changes collision relevant state variables state simultaneously, is write by OPC UA specification
Digital control system, digital control system carries out stoppage protection.If in the automatic course of processing of numerical control program occurs collision, then lathe behaviour
Numerical control program is adjusted to safe condition as personnel；If manual operations processing the most now operator change the side of operation originally
Case, prevents illegal collision.Information and anticipation algorithm is gathered according to digital control system without there is colliding then Virtual Machine
Machine tool position cycle detection is ensured that lathe normally works.If cutter and workpiece cut, then by workpiece real-time cutting
Module display workpiece cutting after shape and carry out animation simulation, be circulated collision detection simultaneously, touching such as occurs in collision detection
Hit the responsive state after then occurring with above-mentioned collision consistent, carry out lathe running status adjustment, be circulated detection the most always.
For the tool changing state in lathe running, native system reads cutter number by OPC UA specification, and changes according to machine cutter holder
Cutter action carries out real-time animation emulation, it is ensured that the accuracy of process tool.
Claims (8)
1. the real-time collision-proof method of Digit Control Machine Tool, it is characterised in that the Digit Control Machine Tool three-dimensional using plug-in main frame to install is real
Time machining simulation and the carrying out the mode of two-way communication with digital control system and carry out collision protection of collision avoidance system, Digit Control Machine Tool is accurate
Standby, connect digital control system PCU factory Ethernet interface and plug-in HPI；Run Digit Control Machine Tool three-dimensional processing on real-time emulation and
Collision avoidance system, starts digital control system and Digit Control Machine Tool three-dimensional processing on real-time emulation and the communicating and emulating of collision avoidance system；Number
Control lathe is properly functioning, normally cuts, and the emulation of Digit Control Machine Tool three-dimensional processing on real-time and collision avoidance system gather digital control system signal
Rear drive Virtual Machine carries out motion simulation and cutting simulation；Simulation process carries out collision detection, as detected collision, system
It is highlighted the parts interfered, and at plug-in main frame screen prompt collision information, simultaneously by digital control system communication module
Return collision alarm to digital control system, digital control system stoppage protection；Readjust lathe and operate machine safety to safe condition
Run.
A kind of real-time collision-proof method of Digit Control Machine Tool the most according to claim 1, it is characterised in that described Digit Control Machine Tool
Three-dimensional processing on real-time emulation and collision avoidance system include six functional modules, respectively human-computer interaction modules, lathe model data
Module, three-dimensional rendering environment module, real time collision detection module, Machinetool workpiece real-time simulation cutting module, digital control system communication
Module, digital control system communication module gathers digital control system signal driving bed model and carries out motion simulation, through three-dimensional rendering ring
Border render after at terminal demonstration, carry out collision detection when lathe is driven through real time collision detection module, pass through work
Part real-time simulation cutting module carries out workpiece cutting simulation.
A kind of real-time collision-proof method of Digit Control Machine Tool the most according to claim 2, it is characterised in that described man-machine interaction
Module, is created interface by the Ribbon pattern of MFC based on message mechanism；The blank at interface imports and final workpiece imports menu
For loading blank model and final workpiece, and completed the loading of workpiece collision model by backstage real time collision detection module,
Completed the pretreatment to blank by lathe real-time cutting module simultaneously and by three-dimensional environment rendering module, workpiece carried out wash with watercolours
Dye, is completed digital control system and the connection of digital control system communication module by communication connection dialog box.
A kind of real-time collision-proof method of Digit Control Machine Tool the most according to claim 2, it is characterised in that described lathe model
Data module, Virtual Machine uses and the triangle surface model of 1:1 in kind, then carries out 1:1 assembling by 3ds Max, lead
Going out .x formatted file supplies the api interface reading of DirectX 9.0 to call；Completed Virtual Machine by three-dimensional rendering environment module
Render display, while rendering, call the motion hierarchy algorithm of lathe model data module, complete machine tool component fortune
The foundation of dynamic tree, is driven being used for the signal gathered by digital control system communication module during follow-up real-time simulation.
A kind of real-time collision-proof method of Digit Control Machine Tool the most according to claim 2, it is characterised in that described three-dimensional rendering
Environment module, builds based on DirectX 9.0 3-D graphic kit；The change of Virtual Machine viewpoint angles, touches
When hitting, parts is highlighted, and in workpiece working angles, the real-time change of workpiece, is all based on the side of rendering of three-dimensional rendering environment module
Method completes.
A kind of real-time collision-proof method of Digit Control Machine Tool the most according to claim 2, it is characterised in that described real-time collision
Detection module, collision detection algorithm is based on the OBB spatial level OBBs algorithm improved；Digital control system communication module gathers
Position signalling estimates interpolation algorithm by based on Virtual Machine position, under estimating athletic posture, and machine tool element and fixture
Or the interference detection between workpiece uses efficient collision detection algorithm to complete, and collision alarm is returned numerical control by communication module
System, native system sets two types for the collision of workpiece: blank and the collision of final piece, the collision that blank relates to
Having blank and the collision of cutter, handle of a knife, main shaft and machine tool component, final piece relates generally to cutter and crosses final workpiece and cut generation
Illegal collision.
A kind of real-time collision-proof method of Digit Control Machine Tool the most according to claim 2, it is characterised in that described Machinetool workpiece
Real-time simulation cutting module, uses dexel structure to carry out pretreatment, and working angles is by between part model and cutter solid
Real-time boolean cut computing and complete；Make alert process for crossing the state of cutting, and completed by digital control system communication module
Cut signal return and perform protection.
A kind of real-time collision-proof method of Digit Control Machine Tool the most according to claim 2, it is characterised in that described digital control system
Communication module, uses digital control system communication means based on OPC UA specification, sets up machine tool numerical control system server end and client
End, is realized the reading to parameters of interest and write by the operation of client, and then is realized by position anticipation interpolation algorithm
To the driving of virtual emulation lathe and write protection to digital control system after colliding.
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| CN113391598B (en) * | 2021-06-28 | 2022-09-20 | 哈尔滨工业大学 | Virtual assembly simulation method and system |
| CN114089645A (en) * | 2021-11-19 | 2022-02-25 | 江苏科技大学 | Machine tool simulation and monitoring method |
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