CN101846991A - Non-trailing quick rollback processing method for numerical control cutting machine - Google Patents
Non-trailing quick rollback processing method for numerical control cutting machine Download PDFInfo
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- CN101846991A CN101846991A CN 201010157299 CN201010157299A CN101846991A CN 101846991 A CN101846991 A CN 101846991A CN 201010157299 CN201010157299 CN 201010157299 CN 201010157299 A CN201010157299 A CN 201010157299A CN 101846991 A CN101846991 A CN 101846991A
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Abstract
The invention provides a non-trailing quick rollback processing method for a numerical control cutting machine, which comprises the following steps of: (a) when a cutting gun predetermines a processing trail MN processed to an A point according to a processing program, finding that a DE section positioned at the front end of the A point and on the processing trail MN is not penetrated, and selecting rollback processing to directly roll back the cutting gun to any B point at the front end of the DE section which is not penetrated along the running direction of the cutting gun, wherein the B point is close to the processing trail MN; (b) determining a C point positioned on the processing trail MN and closest to the B point by adopting a trail scanning method, restarting the processing, automatically moving the cutting gun to the C point through a system, and lighting the fire to perform continuous processing; and (C) after the un-penetrated DE section is processed by the cutting gun, moving the cutting gun to any F point positioned in back of the DE section so as to finish the rollback processing process. The method is convenient to operate, saves time and labor, and has high efficiency.
Description
Technical field
The present invention relates to numerical control cutting machine rollback processing technology, specifically be meant a kind of non-quick rollback job operation that tracks that is applied to numerical control cutting machine.
Background technology
Numerical control cutting machine is the major equipment of sheet metal processing, the user can realize processing automatically by the establishment nc program, it is actual to be a kind of numerically-controlled machine, compare with common numerical control Metal Cutting Machine Tool, its processing mode has flame, plasma, laser, water cutter etc., rather than cutting tool.
In process through regular meeting because the unevenness of processed sheet material, cutting cause the situation that processing request occurs not meeting at uncertain section with factors such as gaseous tension and machined parameters.When this situation occurring, require operating personnel to interrupt processing, adopt the rollback method for processing that burning torch is return back to the place ahead that does not meet the processing request section along the machining path original route, and then startup processing, process do not meet the processing request section after, can only run to the point of interruption along former machining locus.Owing to might there be problems such as instruction such as program redirect, circulation, subroutine call and cutting torch radius compensation in the job sequence, to realize that rollback processing is very difficult according to program, existing numerical control cutting machine digital control system generally adopts the method for track storage to realize rollback processing, that is: opening up certain storage space in internal system notes and carries out the machining locus data, adds to use man-hour and realize that former road returns carrying out rollback, but there is following problem in this method by the track of record:
First, because the restriction of control system storage space, the track length that system can write down is very limited, and existing main flow cutting machine digital control system generally can only be remembered the executed machining locus of 30-50 section, can not realize rollback processing if operating personnel just pinpoint the problems after exceeding this scope.
Second, this mode can only realize returning by former machining path, and can not directly turn back on the point that need process again, and not advancing to the point of interruption along finished track after meeting the processing request section and processing, therefore will take the more time, efficient is very low.
Summary of the invention
Technical matters to be solved by this invention provides a kind of non-quick rollback job operation that tracks that is applied to numerical control cutting machine, it can directly return back to undesirable processing sections and process again, not only easy to operate, and time saving and energy saving, high efficiency.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: be applied to the non-quick rollback job operation that tracks of numerical control cutting machine, may further comprise the steps:
(a) when burning torch is machined to the A point by the predetermined machining locus MN of job sequence, find that the DE section that is positioned at A point front end on the machining locus MN is not penetrated, select this moment rollback processing that burning torch is directly return back to along the burning torch traffic direction and see that not by the arbitrfary point B point of the section of penetrating DE section front end described B point is near machining locus MN; (b) adopt the track scanning method determine to be positioned at machining locus MN goes up and with the shortest C point of B point distance, after the starting processing, system moves to burning torch the C point automatically once more, igniting continues to process; (c) do not move to the F point after burning torch will be machined by the section of penetrating DE section, promptly finish the rollback process, described F point is the arbitrfary point after the section of the not penetrating DE section.
Adopt in the described step (b) the track scanning method determine to be positioned at machining locus MN goes up and with B point apart from the shortest C point, burning torch is moved to the point and point fire of C to be continued process and comprises the steps: that (b.1) with job sequence scanning and read in internal memory, creates a chained list; (b.2) two pointer P1 and P2 that point to this chained list of definition, P1 is used for processing and track scanning automatically, and P2 is used to preserve scanning result; (b.3) add man-hour carrying out rollback, P1 is pointed to linked list head again, point to each node of chained list one by one, read the processing instruction that wherein relates to movement locus control, obtain this section track coordinate data, set up the machining locus mathematical model, calculate the distance of B point and every section machining locus, up to EOP (end of program); Be exactly the C point with the nearest point of B point wherein, determine that the pointer that will point to C point place node behind the C point is stored in P2, cutting machine does not produce motion in this process; (b.4) after numerical control cutting machine moves to the C point from the B point, the C point coordinate as current coordinate, is composed P2 to P1 simultaneously, made P1 point to the pairing processing instruction of section of processing soon, can reset automatic processing.
After finishing the rollback process in the described step (c), can select following arbitrary scheme as the case may be: (c.1) also has other section of not penetrating when machining locus MN goes up, and then repeating step (a, b, c) continues to select rollback processing; (c.2) not having other section of not penetrating on machining locus MN, if burning torch and A point close together are then selected to continue processing, if burning torch and A point distance are far away, is that target is selected rollback processing once more with the A point then, treats that burning torch arrives A point back and continues processing.
To sum up, the invention has the beneficial effects as follows:
(1) can return back to the arbitrfary point of processing part, the distance of rollback and track hop count are without limits and do not rely on the storage space of control system;
(2) back off procedure can directly return back to the point that need process again, and does not need former road to return, and can increase work efficiency;
(3) do not need operating personnel accurately to aim at original track during rollback, start once more and add the man-hour system and can directly move on the former machining locus by nearest principle;
(4) in the rollback process, can end processing at any time, also can under this mode, directly advance to the arbitrfary point and continue processing.
Description of drawings
Fig. 1 is a free routing rollback processing synoptic diagram of the present invention.
Fig. 2 determines the track scanning process flow diagram that C is ordered for the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
The method of operating of free routing rollback: as shown in Figure 1, curve M N is the determined machining locus of job sequence, and M is a starting point, N is a terminal point, automatically add man-hour in execution, burning torch runs to the DE section shown in A point back operating personnel's discovery figure and is not penetrated, and then need cut this section again.This moment, operating personnel need suspend processing, selected rollback processing, then burning torch were directly moved on to the B point from the A point, and the B point must be in the front of not cutting threading section DE from traffic direction, and near machining locus.The place resets automatic processing at the B point, then system moves to burning torch the C point on the machining locus automatically, and this function is lighted a fire at C point place then by the software program control that is integrated in the numerical control cutting machine, begin automatic cutting processing, just finished rollback processing after reaching the F point.
Can select rollback processing once more after the processing again of finishing the section of not penetrating, also can continue automatic processing, directly get back to A point if desired or return back to other not penetrating Duan Ze and select rollback to process once more, process is identical with said method; If the F point is nearer apart from the A point, can select to continue processing, cutting machine will run to the A point and continue to carry out job sequence along former machining locus, and this moment is without any need for operation bidirectional.A among the figure, B, F point are determined that by operating personnel according to principle is definite automatically recently, the B point must be determined the front in the section of not penetrating to the C point by system.
Embodiment 2
Software implementation method: as shown in Figure 2, realize that above-described free routing rollback method for processing key is correctly to find the C point on the machining locus and re-executes job sequence from this point, adopts the machining locus method for scanning can find this point exactly.
NC flame cutting machine obtains the data and the control information of cutting machine movement locus by explaining nc program, and Control Servo System and other topworkies realize automatic cutting processing.Machining locus scanning is according to process job sequence to be made an explanation fully, obtain wherein motion trace data but do not carry out concrete process operation, then each the motion line segment (straight line, circular arc etc.) in the machining locus is analyzed, according to determining the position that C is ordered with the nearest principle of B point, key point wherein is that track scanning must be fully identical with process, comprises flame radius compensation, program redirect etc.
Job sequence is stored on the hard disk with the form of file, earlier processed file is read in internal memory, and it is created a chained list, defines two pointer P1 and P2 that point to this chained list, and P1 is used for automatic processing, and P2 is used for track scanning.Under the normal process pattern, P1 points to each node of chained list one by one, obtains process data, controls cutting machine then and carries out corresponding operation, up to EOP (end of program).Add man-hour carrying out rollback, P1 is pointed to linked list head again, point to each node of chained list one by one, read wherein G00, G01, G02 etc. and relate to the processing instruction of movement locus control, obtain this section track coordinate data, set up its mathematical model, calculate the distance of B point and every section machining locus, up to EOP (end of program).Be exactly the C point with the nearest point of B point wherein, the C point can not be positioned G00 and instruct on the pairing line segment, determines that the pointer that will point to C point place node behind the C point is stored in P2.In scanning process, directly skip instructions such as M, F, time-delay, then revise the P1 pointer, make it point to correct destination node by its function for instructions such as G98 (subroutine call), G99 (subroutine is returned), G80 (circulation), G97 (redirect).After numerical control cutting machine moves to the C point from the B point, the C point coordinate as current coordinate, is composed P2 to P1 simultaneously, make P1 point to the pairing processing instruction of section of processing soon, can reset automatic processing.Because track scanning is the complete scan to job sequence from the head beginning of chained list, therefore can guarantee the accuracy of data and the seamless link that begins to process back and following process program from C point.
The track scanning program circuit as shown in Figure 2, because track scanning just obtains the machining locus data and carries out correlation computations, and do not carry out process operation, therefore holding time is very of short duration, can not impact process operation, and the purpose of track scanning is to find the C point simultaneously, need only analyze the relation that machining locus and B are ordered piecemeal, and do not need to obtain simultaneously all machining locus data, so digital control system do not need additionally to preserve the machining locus data, can save a large amount of storage spaces.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, to any simple modification, equivalent variations that above embodiment did, all falls within protection scope of the present invention on every foundation technical spirit of the present invention.
Claims (3)
1. be applied to the non-quick rollback job operation that tracks of numerical control cutting machine, it is characterized in that: may further comprise the steps:
(a) when burning torch is machined to the A point by the predetermined machining locus MN of job sequence, find that the DE section that is positioned at A point front end on the machining locus MN is not penetrated, select rollback processing that burning torch is directly return back to along the burning torch traffic direction and see that not by the arbitrfary point B point of the section of penetrating DE section front end described B point is near machining locus MN;
(b) adopt the track scanning method determine to be positioned at machining locus MN goes up and with the shortest C point of B point distance, after the starting processing, system moves to burning torch the C point automatically once more, igniting continues to process;
(c) burning torch moves to the arbitrfary point F point that is positioned at after the DE section after will do not machined by the section of penetrating DE section, finishes the rollback process.
2. the non-quick rollback job operation that tracks that is applied to numerical control cutting machine according to claim 1, it is characterized in that: adopt in the described step (b) the track scanning method determine to be positioned at machining locus MN goes up and with the shortest C point of B point distance, burning torch is moved to the point and point fire continuation of C process comprises the steps:
(b.1), create a chained list with job sequence scanning and read in internal memory;
(b.2) two pointer P1 and P2 that point to this chained list of definition, P1 is used for processing and track scanning automatically, and P2 is used to preserve scanning result;
(b.3) add man-hour carrying out rollback, P1 is pointed to linked list head again, point to each node of chained list one by one, read the processing instruction that wherein relates to movement locus control, obtain this section track coordinate data, set up the machining locus mathematical model, calculate the distance of B point and every section machining locus, up to EOP (end of program); Be exactly the C point with the nearest point of B point wherein, determine that the pointer that will point to C point place node behind the C point is stored in P2, cutting machine does not produce motion in this process;
(b.4) after numerical control cutting machine moves to the C point from the B point, the C point coordinate as current coordinate, is composed P2 to P1 simultaneously, made P1 point to the pairing processing instruction of section of processing soon, can reset automatic processing.
3. the non-quick rollback job operation that tracks that is applied to numerical control cutting machine according to claim 1 is characterized in that: after finishing the rollback process in the described step (c):
(c.1) when machining locus MN upward also has other section of not penetrating, repeating step (a, b, c) continues to select rollback processing;
(c.2) when not having other section of not penetrating on the machining locus MN, if burning torch and A point close together are then selected to continue processing,, be that target is selected rollback processing once more then with the A point if burning torch and A point distance are far away, treat that burning torch arrives A point back and continues processing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102346457A (en) * | 2011-08-29 | 2012-02-08 | 重庆大学 | Method for calculating virtual processing time of material to be processed |
| CN105676775A (en) * | 2016-01-13 | 2016-06-15 | 厦门理工学院 | Method based on double track cache regions for controlling rollback and machining continuing of original path of numerical control machining |
| CN110142880A (en) * | 2019-05-23 | 2019-08-20 | 泉州华数机器人有限公司 | A kind of real-time follow-up control method of rollback for cutting apparatus |
| CN111367234A (en) * | 2018-12-26 | 2020-07-03 | 沈阳高精数控智能技术股份有限公司 | Hand wheel trial cut rollback control method based on three-ring queue |
| CN111949506A (en) * | 2019-05-14 | 2020-11-17 | 大族激光科技产业集团股份有限公司 | Teaching track modification method and device based on three-dimensional program backspacing function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111367234A (en) * | 2018-12-26 | 2020-07-03 | 沈阳高精数控智能技术股份有限公司 | Hand wheel trial cut rollback control method based on three-ring queue |
| CN111367234B (en) * | 2018-12-26 | 2022-12-27 | 沈阳高精数控智能技术股份有限公司 | Hand wheel trial cut rollback control method based on three-ring queue |
| CN111949506A (en) * | 2019-05-14 | 2020-11-17 | 大族激光科技产业集团股份有限公司 | Teaching track modification method and device based on three-dimensional program backspacing function |
| CN111949506B (en) * | 2019-05-14 | 2024-02-13 | 大族激光科技产业集团股份有限公司 | Teaching track modification method and device based on three-dimensional program rollback function |
| CN110142880A (en) * | 2019-05-23 | 2019-08-20 | 泉州华数机器人有限公司 | A kind of real-time follow-up control method of rollback for cutting apparatus |
| CN110142880B (en) * | 2019-05-23 | 2022-04-01 | 泉州华数机器人有限公司 | Rollback real-time following control method for cutting equipment |
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Effective date of registration: 20200624 Address after: 610000 5 Wu Xing Road four, Wuhou Science and Technology Park, Chengdu, Sichuan, Wuhou District Patentee after: CHENGDU HUAYUAN ELECTRIC EQUIPMENT Co.,Ltd. Address before: 610000 Chengdu Huayuan Welding & Cutting Equipment Co., Ltd., No. two, No. 1299, Airport Road, Southwest Airlines port, Shuangliu, Sichuan, Chengdu Patentee before: CHENGDU HUAYUAN WELDING & CUTTING EQUIPMENT Co.,Ltd. |