CN104181861A - Biaxial numerical control machine tool correction positioning implementation method and system based on counterpoint platform - Google Patents
Biaxial numerical control machine tool correction positioning implementation method and system based on counterpoint platform Download PDFInfo
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Abstract
The invention relates to a biaxial numerical control machine tool correction positioning implementation method and system based on a counterpoint platform. The counterpoint platform is arranged on a working platform of a biaxial numerical control machine tool. A first workpiece is arranged on the working platform, and a second workpiece is arranged on the counterpoint platform. The method includes the steps that the first actual position of the first workpiece and the second actual position of the second workpece are collected; the rotating deviation of the second workpiece relative to the first workpiece is worked out through a processor of the biaxial numerical control machine tool; the counterpoint platform conducts moving and rotating according to the rotating deviation. The invention further relates to a biaxial numerical control machine tool correction positioning system based on the counterpoint platform. The system comprises an image collection module, a processing module and the counterpoint platform. By the adoption of the biaxial numerical control machine tool correction positioning achieving method and system based on the counterpoint platform, the difficulty in correcting the two workpieces simultaneously is lowered, processing efficiency and accuracy are improved, and the system is stable in work performance and high in reliability and has the wider application range.
Description
Technical field
The present invention relates to Control System of NC Machine field, relate in particular to double-spindle numerical control machine tooling technical field, specifically refer to a kind of method and system based on bit platform being realized to double-spindle numerical control lathe correction location.
Background technology
Along with scientific and technological development, Control System of NC Machine is used widely in Numeric Control Technology.Numerically-controlled machine has successively experienced five developing stage since the U.S. successfully develops from nineteen fifty-two.Increasingly mature along with microelectronics and computer technology, has promoted the development of China's Numeric Control Technology, and domestic numerical control system is succeeded in developing in succession, makes China NC Machine obtain guarantee in quality, in performance.Because numerically-controlled machine has strong adaptability, the machining precision of pair workpiece remodeling high, the feature such as boost productivity, so the wide popularization and application of Numeric Control Technology in modern mechanical system of processing.Rise along with numerically-controlled machine application, machine operation person also improves gradually to the requirement of the working (machining) efficiency of lathe and machining precision, for example on numerically-controlled machine, adopt CCD (Charge-coupled Device, charge coupled cell, can be used as imageing sensor) proofread and correct, for some accurate workpiece, such as the glass of printed circuit, now artificially manually setting accuracy on work is inadequate, introduces CCD vision system and processes more accurately.
In addition, the two Z axis lathes in numerically-controlled machine, for the consideration of cost and efficiency, share XY axle, and 2 main shafts installing on 2 Z axis are for process 2 living workpiece simultaneously.Current domestic two Z axis Control System of NC Machines, two Z axis move in turn processing and the processing of two Z-axis linkages have been realized, the conventional interlock processing mode of two Z axis systems is, processes one group of two workpiece simultaneously, and the spacing of this group workpiece be the spacing of pair Z axis, after this group workpiece process finishing, reprocess second group ..., by that analogy, so until workpiece process finishing stops lathe.The efficiency that two Z axis systems are processed a plurality of workpiece is higher than the efficiency of single Z axis system processing same number workpiece, but machining precision is undesirable, and owing to processing a plurality of workpiece simultaneously, higher for the setting accuracy requirement of the location of workpiece, location calibration difficulty is larger.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of and gathered workpiece physical location by ccd image pick-up transducers, the location of utilization to first one of them workpiece of automatic calibration of bit platform, by the motion of double-spindle numerical control lathe, proofread and correct again the location of two workpiece simultaneously, realize a plurality of workpiece accurate corrections location, that improves correcting rate and working (machining) efficiency proofreaies and correct the method and system of locating based on bit platform being realized to double-spindle numerical control lathe.
To achieve these goals, the method and system based on bit platform being realized to double-spindle numerical control lathe correction location of the present invention have following formation:
Should proofread and correct the method for locating based on bit platform being realized to double-spindle numerical control lathe, its principal feature is, bit platform is positioned on the workbench of double-spindle numerical control lathe, places the first workpiece on described workbench, described to placing second workpiece on bit platform, described method comprises the following steps:
(1) imageing sensor gathers the first physical location of the first workpiece on described workbench and described the second physical location to the second workpiece on bit platform;
(2) relatively more described the first physical location and the second physical location of the processor of described double-spindle numerical control lathe, and obtain described second workpiece with respect to the rotation offset amount of the first described workpiece;
(3) bit platform is moved and being rotated according to described rotation offset amount described in.
Further, the first physical location and the second physical location that the processor of described double-spindle numerical control lathe is relatively more described also obtains described second workpiece with respect to the rotation offset amount of the first described workpiece, comprises the following steps:
(2.1) the first virtual coordinate system that the first workpiece described in described processor foundation is corresponding and described the second virtual coordinate system corresponding to second workpiece;
(2.2) described processor calculates first virtual coordinates of the first described physical location in the first described virtual coordinate system, and second virtual coordinates of the second described physical location in the second described virtual coordinate system;
(2.3) described processor calculates described second workpiece with respect to the rotation offset amount of the first described workpiece according to the first described virtual coordinates and the second virtual coordinates.
Further, described step (3) is afterwards, further comprising the steps of:
(4) described imageing sensor gathers the second physical location of described second workpiece again;
(5) whether the distance between the first physical location described in the processor judgement described in and the second physical location again collecting exceeds error allowed band;
(6) if judgment result is that the first described physical location and the second physical location of again collecting between distance exceed error allowed band, return to above-mentioned steps (2), otherwise continue step (7);
(7) described numerically-controlled machine starts processing described the first workpiece and second workpiece.
Further, between described step (6) and (7), further comprising the steps of:
(6.1) theoretical position of the first physical location that the processor described in is relatively more described and the first described workpiece, the secondary rotating side-play amount of the workbench described in obtaining;
(6.2) described workbench moves and rotates according to described secondary rotating side-play amount, and described workbench move with rotary course in, described is relative static with described workbench to bit platform.
In addition, the present invention also provides a kind of double-spindle numerical control lathe based on to bit platform to proofread and correct positioning system, and it is for realizing above-mentioned method, and its principal feature is that described system comprises:
Image capture module, in order to gather the first physical location of the first described workpiece and the second physical location of described second workpiece;
Processing module, in order to relatively more described the first physical location and the second physical location, and obtains described second workpiece with respect to the rotation offset amount of the first described workpiece;
To bit platform, in order to move and to rotate according to described rotation offset amount, and described bit platform is positioned on the workbench of described double-spindle numerical control lathe.
Further, described processing module comprises judgement comparison module, described judge module is in order to judge whether the distance between the second physical location again collecting after the first described physical location and correction exceeds error allowed band, the theoretical position of the first physical location relatively and the first described workpiece, and judged result and comparing data are fed back to described processing module.
Further, described processing module comprises side-play amount computing unit, described side-play amount computing unit is in order to the first virtual coordinate system corresponding to the first workpiece described in setting up and described the second virtual coordinate system corresponding to second workpiece, and calculate described second workpiece with respect to the rotation offset amount of the first described workpiece according to the first described virtual coordinate system and the second virtual coordinate system, and according to described comparing data, calculate the secondary rotating side-play amount of described workbench.
The method and system based on bit platform being realized to double-spindle numerical control lathe correction location of the present invention have been adopted, the location of utilization to first one of them workpiece of automatic calibration of bit platform, make the workpiece on the workbench of the workpiece on bit platform and double-spindle numerical control lathe in relative consistent position, by the motion of double-spindle numerical control lathe, proofread and correct again the location of two workpiece simultaneously, both there is the linkage function of two Z axis systems, the image identification function also with vision system, simultaneously, bit platform is proofreaied and correct to location in advance to one of them workpiece, two difficulty that workpiece is proofreaied and correct have together been simplified, improved to a certain extent working (machining) efficiency, and improved significantly machining precision, stable work in work, reliability is high.
In addition, of the present invention is the machinery of lightweight to bit platform, bear a heavy burden low, the weight that only needs heavy burden deadweight and a glass, the leading screw of joining and driver are all low speed, low stroke, low-power consumption, compare and join 2 needs and make the cost of calibration equipment of conventional machine tool motion lower, physical construction is more stable.
Therefore, the method and system can extensively be promoted in the application of modern mechanical system of processing, for example, in glass edging industry, be an indispensable part, have range of application widely.
Accompanying drawing explanation
Fig. 1 is the process flow diagram based on bit platform being realized to the method for double-spindle numerical control lathe correction location of the present invention.
Fig. 2 is the location of workpiece schematic diagram of a kind of embodiment of the present invention.
Fig. 3 is the location of workpiece schematic diagram after a kind of embodiment of the present invention bit platform is proofreaied and correct.
Embodiment
In order more clearly to describe technology contents of the present invention, below in conjunction with specific embodiment, conduct further description.
Refer to Fig. 1, in one embodiment, bit platform is positioned on the workbench of double-spindle numerical control lathe, on described workbench, place the first workpiece, described to placing second workpiece on bit platform, the method based on bit platform being realized to double-spindle numerical control lathe and proofreaied and correct location of the present invention comprises the following steps:
(1) imageing sensor gathers the first physical location of the first workpiece on described workbench and described the second physical location to the second workpiece on bit platform;
(2) relatively more described the first physical location and the second physical location of the processor of described double-spindle numerical control lathe, and obtain described second workpiece with respect to the rotation offset amount of the first described workpiece;
(3) bit platform is moved and being rotated according to described rotation offset amount described in.
Wherein, the first physical location is defined as the first workpiece with respect to the position of lathe, and the second physical location is defined as second workpiece with respect to the position of lathe, moves in the center to bit platform based on to bit platform.
A kind of preferred embodiment in, relatively described the first physical location and the second physical location of the processor of described double-spindle numerical control lathe also obtains described second workpiece with respect to the rotation offset amount of the first described workpiece, comprises the following steps:
(2.1) the first virtual coordinate system that the first workpiece described in described processor foundation is corresponding and described the second virtual coordinate system corresponding to second workpiece;
(2.2) described processor calculates first virtual coordinates of the first described physical location in the first described virtual coordinate system, and second virtual coordinates of the second described physical location in the second described virtual coordinate system;
(2.3) described processor calculates described second workpiece with respect to the rotation offset amount of the first described workpiece according to the first described virtual coordinates and the second virtual coordinates.
Wherein, known the first physical location and the second physical location based on lathe coordinate system, constant offset amount between known the first workpiece and second workpiece, get rid of the constant offset between the one or two workpiece, and based on main shaft corresponding to each workpiece, if the position of the first workpiece is A, the position of second workpiece is B.
Secondly, known is O to bit platform center with respect to the position of main shaft 2 (main shaft that second workpiece is corresponding), due to bit platform in workbench relative motion, so we calculate the center of bit platform is set up to coordinate system, (B-O), with respect to the rotation translational movement of (A-O), is specially:
Take coordinate system (i.e. the second virtual coordinates) is set up to as initial point in bit platform center, obtain second workpiece with respect to the position to bit platform center.And be the centre coordinate system (i.e. the first virtual coordinates) that the first workpiece is set up a virtual platform, virtual platform with respect to the position of centre coordinate axle with identical with respect to the position O of main shaft 2 to bit platform, obtain the first workpiece with respect to the position to bit platform center, relatively these two position calculation obtain rotating translational movement.
A kind of preferred embodiment in, described step (3) is afterwards, further comprising the steps of:
(4) described imageing sensor gathers the second physical location of described second workpiece again;
(5) whether the distance between the first physical location described in the processor judgement described in and the second physical location again collecting exceeds error allowed band;
(6) if judgment result is that the first described physical location and the second physical location of again collecting between distance exceed error allowed band, return to above-mentioned steps (2), otherwise continue step (7);
(7) described numerically-controlled machine starts processing described the first workpiece and second workpiece.
In a kind of preferred embodiment, between described step (6) and (7), further comprising the steps of:
(6.1) theoretical position of the first physical location that the processor described in is relatively more described and the first described workpiece, the secondary rotating side-play amount of the workbench described in obtaining;
(6.2) described workbench moves and rotates according to described secondary rotating side-play amount, and described workbench move with rotary course in, described is relative static with described workbench to bit platform.
In addition, the present invention also provides a kind of double-spindle numerical control lathe based on to bit platform to proofread and correct positioning system, and it is for realizing above-mentioned method, and its principal feature is that described system comprises:
Image capture module, in order to gather the first physical location of the first described workpiece and the second physical location of described second workpiece;
Processing module, in order to relatively more described the first physical location and the second physical location, and obtains described second workpiece with respect to the rotation offset amount of the first described workpiece;
To bit platform, in order to move and to rotate according to described rotation offset amount, and described bit platform is positioned on the workbench of described double-spindle numerical control lathe.
A kind of preferred embodiment in, described processing module comprises judgement comparison module, described judge module is in order to judge whether the distance between the second physical location again collecting after the first described physical location and correction exceeds error allowed band, the theoretical position of the first physical location relatively and the first described workpiece, and judged result and comparing data are fed back to described processing module.
In a kind of preferred embodiment, described processing module comprises side-play amount computing unit, described side-play amount computing unit is in order to the first virtual coordinate system corresponding to the first workpiece described in setting up and described the second virtual coordinate system corresponding to second workpiece, and calculate described second workpiece with respect to the rotation offset amount of the first described workpiece according to the first described virtual coordinate system and the second virtual coordinate system, and according to described comparing data, calculate the secondary rotating side-play amount of described workbench.
In a kind of concrete embodiment, use two Z axis lathes, two CCD, introducing is the position as one of them workpiece of adjustment to bit platform, make the state consistency of 2 workpiece, then apply the location processing that CCD is confirmed whether to start two Z axis lathes, implementation is as described below:
1, two Z axis move to workpiece top simultaneously, and CCD takes pictures simultaneously, now can see the physical location of 2 workpiece as shown in Figure 2, and obviously, the relative position of workpiece 1 and workpiece 2 needs to adjust.
2, using the position of workpiece 1 as benchmark, calculate the rotation offset amount with respect to the needs motion of workpiece 1 to bit platform of place work piece 2, this computing method have certain requirement:
1) because the spacing between 2 main shafts of two Z axis is fixed, so the spacing of 2 workpiece after adjusting must be consistent with the spacing between two Z axis.
2) take to set up the method for virtual coordinate system, with main shaft offset distance difference, do not set up 2 virtual coordinate systems, calculate position, workpiece 2 position in virtual coordinate system 2 of workpiece 1 in virtual coordinate system 1, now these 2 positions just have contrast, rotation offset amount with these 2 position calculation workpiece 2 with respect to workpiece 1, the rotation offset amount that namely need to move to bit platform.
3, bit platform is moved according to rotation offset amount, after having moved, can find out, the position of workpiece 2 and workpiece 1 meets the requirements, as shown in Figure 3.
4, according to the ideal position of the physical location of workpiece 1 and standard workpiece, obtain the information how lathe is processed, be equivalent to have the general processing of the numerical control of machine tools lathe of CCD system, therefore process is omitted.
5, two Z axis machine simultaneously.
In the concrete embodiment of another kind, above-mentioned structure is constant, claims to be auxiliary working platform to bit platform, and the workbench of numerically-controlled machine is main worktable, and implementation is as described below:
A) need to revise source processed file, according to the source processed file loading, generate a new file to be processed, in this new file to be processed, contain the cutter track information in the information of taking pictures, source processed file, wherein, the basic format of a new file to be processed is:
Auxiliary working platform returns workpiece initial point;
Be switched to exposal model;
Taking pictures of major-minor worktable unit one;
Taking pictures of second workpiece of major-minor worktable;
The end notification of taking pictures;
Auxiliary working platform is proofreaied and correct the position of unit one;
The correction result of checking auxiliary working platform (a workpiece is taken pictures, whether the difference of etection theory position and physical location is in the error range arranging, if this difference exceeds error range, command number controlled machine stops processing, otherwise continues to process);
Be switched to cooked mode;
Cutter track in the processed file of source;
B) new file to be processed is resolved and carried out, detailed step is as follows:
(a) auxiliary working platform returns workpiece initial point, guarantees that the workpiece theoretical position of record when auxiliary working platform is taken pictures with main worktable is simultaneously accurate;
(b) be switched to exposal model, two motion of main shaft are to accurate burnt height (accurate burnt height, the Z axis position when image seen from camera is the most clear);
(c) workpiece 2 of placing on the workpiece 1 of placing on main worktable and auxiliary working platform is taken pictures:
Two Z axis are gone to first count according to a position simultaneously, the workpiece 1 of placing on main worktable is taken pictures, while taking pictures, record a theoretical position for corresponding workpiece 1 of taking pictures, take pictures after end, utilize image identification function, calculate the physical location of workpiece 1, and record this physical location, then, two main shafts are gone to second count according to a position simultaneously, the workpiece 2 of placing on auxiliary working platform is taken pictures, record equally theoretical position and physical location.
(d) had two groups of theoretical positions and physical location, just can calculate the rotation offset amount of the relative workpiece initial point of workpiece on major-minor worktable, computation process is as follows in detail:
A. calculate the rotation offset amount of auxiliary working platform: two physical locations that the main worktable of take records are reference, go out an anglec of rotation and skew with two actual calculation of location of auxiliary working platform record, the matrix of remembering this anglec of rotation and skew is A, make auxiliary working platform through this angle rotation and skew, can reach the same with the workpiece coordinate of main worktable workpiece physical location.
B. calculate the rotation offset amount of main worktable: two physical locations that the main worktable of take records are reference, calculate an anglec of rotation and skew with two theoretical positions of main worktable record, the matrix of remembering this anglec of rotation and skew is B, after making the relatively main worktable of auxiliary working platform static, along with main worktable is through this angle rotation and skew, can realize the object that major-minor worktable workpiece is all proofreaied and correct.
(e) if also have other workpiece, then other workpiece of major-minor worktable is taken pictures, the same above-mentioned steps of the process of taking pictures, by that analogy, until all workpiece have all been taken after photograph, sends the end notification of taking pictures.
C) processing work 1 and workpiece 2:
Auxiliary working platform moves, use matrix A, the workpiece 2 of proofreading and correct on auxiliary working platform is identical with the workpiece coordinate of workpiece 1 on main worktable, the processor command ccd image sensor of numerically-controlled machine again workpiece 1 is taken pictures and whether the difference of proof theory position and physical location exceeds error range, if exceed, command number controlled machine stops processing, otherwise be switched to cooked mode, the relatively main worktable of auxiliary working platform is static, and auxiliary working platform, along with main worktable is used matrix B, is proofreaied and correct and processing work 1 and 2 together.
D) after workpiece 1 and 2 process finishing, will need below the workpiece of processing according to above-mentioned steps A) to C) carry out, until all workpiece all high-level efficiency, high-precision process finishing.
The method and system based on bit platform being realized to double-spindle numerical control lathe correction location of the present invention have been adopted, the location of utilization to first one of them workpiece of automatic calibration of bit platform, make the workpiece on the workbench of the workpiece on bit platform and double-spindle numerical control lathe in relative consistent position, by the motion of double-spindle numerical control lathe, proofread and correct again the location of two workpiece simultaneously, both there is the linkage function of two Z axis systems, the image identification function also with vision system, simultaneously, bit platform is proofreaied and correct to location in advance to one of them workpiece, two difficulty that workpiece is proofreaied and correct have together been simplified, improved to a certain extent working (machining) efficiency, and improved significantly machining precision, stable work in work, reliability is high.
In addition, of the present invention is the machinery of lightweight to bit platform, bear a heavy burden low, the weight that only needs heavy burden deadweight and a glass, the leading screw of joining and driver are all low speed, low stroke, low-power consumption, compare and join 2 needs and make the cost of calibration equipment of conventional machine tool motion lower, physical construction is more stable.
Therefore, the method and system can extensively be promoted in the application of modern mechanical system of processing, for example, in glass edging industry, be an indispensable part, have range of application widely.
In this instructions, the present invention is described with reference to its specific embodiment.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (7)
1. based on bit platform being realized to double-spindle numerical control lathe, proofread and correct the method for locating for one kind, it is characterized in that, bit platform is positioned on the workbench of double-spindle numerical control lathe, on described workbench, place the first workpiece, described to placing second workpiece on bit platform, described method comprises the following steps:
(1) imageing sensor gathers the first physical location of the first workpiece on described workbench and described the second physical location to the second workpiece on bit platform;
(2) relatively more described the first physical location and the second physical location of the processor of described double-spindle numerical control lathe, and obtain described second workpiece with respect to the rotation offset amount of the first described workpiece;
(3) bit platform is moved and being rotated according to described rotation offset amount described in.
2. the method based on bit platform being realized to double-spindle numerical control lathe and proofreaied and correct location according to claim 1, it is characterized in that, the first physical location and the second physical location that the processor of described double-spindle numerical control lathe is relatively more described also obtains described second workpiece with respect to the rotation offset amount of the first described workpiece, comprises the following steps:
(2.1) the first virtual coordinate system that the first workpiece described in described processor foundation is corresponding and described the second virtual coordinate system corresponding to second workpiece;
(2.2) described processor calculates first virtual coordinates of the first described physical location in the first described virtual coordinate system, and second virtual coordinates of the second described physical location in the second described virtual coordinate system;
(2.3) described processor calculates described second workpiece with respect to the rotation offset amount of the first described workpiece according to the first described virtual coordinates and the second virtual coordinates.
3. the method based on bit platform being realized to double-spindle numerical control lathe correction location according to claim 1, is characterized in that, described step (3) is afterwards, further comprising the steps of:
(4) described imageing sensor gathers the second physical location of described second workpiece again;
(5) whether the distance between the first physical location described in the processor judgement described in and the second physical location again collecting exceeds error allowed band;
(6) if judgment result is that the first described physical location and the second physical location of again collecting between distance exceed error allowed band, return to above-mentioned steps (2), otherwise continue step (7);
(7) described numerically-controlled machine starts processing described the first workpiece and second workpiece.
4. the method based on bit platform being realized to double-spindle numerical control lathe correction location according to claim 3, is characterized in that, between described step (6) and (7), further comprising the steps of:
(6.1) theoretical position of the first physical location that the processor described in is relatively more described and the first described workpiece, the secondary rotating side-play amount of the workbench described in obtaining;
(6.2) described workbench moves and rotates according to described secondary rotating side-play amount, and described workbench move with rotary course in, described is relative static with described workbench to bit platform.
5. the double-spindle numerical control lathe based on to bit platform is proofreaied and correct a positioning system, and it realizes the method described in any one in claim 1 to 4, it is characterized in that, described system comprises:
Image capture module, in order to gather the first physical location of the first described workpiece and the second physical location of described second workpiece;
Processing module, in order to relatively more described the first physical location and the second physical location, and obtains described second workpiece with respect to the rotation offset amount of the first described workpiece;
To bit platform, in order to move and to rotate according to described rotation offset amount, and described bit platform is positioned on the workbench of described double-spindle numerical control lathe.
6. the double-spindle numerical control lathe based on to bit platform according to claim 5 is proofreaied and correct positioning system, it is characterized in that, described processing module comprises judgement comparison module, described judge module is in order to judge whether the distance between the second physical location again collecting after the first described physical location and correction exceeds error allowed band, the theoretical position of the first physical location relatively and the first described workpiece, and judged result and comparing data are fed back to described processing module.
7. the double-spindle numerical control lathe based on to bit platform according to claim 6 is proofreaied and correct positioning system, it is characterized in that, described processing module comprises side-play amount computing unit, described side-play amount computing unit is in order to the first virtual coordinate system corresponding to the first workpiece described in setting up and described the second virtual coordinate system corresponding to second workpiece, and calculate described second workpiece with respect to the rotation offset amount of the first described workpiece according to the first described virtual coordinate system and the second virtual coordinate system, with the secondary rotating side-play amount that calculates described workbench according to described comparing data.
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| CN106736847A (en) * | 2017-01-04 | 2017-05-31 | 昆山工研院新型平板显示技术中心有限公司 | To the error compensating method of bit platform |
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| CN107771305A (en) * | 2016-06-23 | 2018-03-06 | 三菱电机株式会社 | Numerical control device |
| CN109725603A (en) * | 2017-10-30 | 2019-05-07 | 富鼎电子科技(嘉善)有限公司 | Numerical control processing apparatus, method and storage equipment |
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