CN104190963B - A kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method - Google Patents
A kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method Download PDFInfo
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- CN104190963B CN104190963B CN201410321082.XA CN201410321082A CN104190963B CN 104190963 B CN104190963 B CN 104190963B CN 201410321082 A CN201410321082 A CN 201410321082A CN 104190963 B CN104190963 B CN 104190963B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
- B23B25/06—Measuring, gauging, or adjusting equipment on turning-machines for setting-on, feeding, controlling, or monitoring the cutting tools or work
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Abstract
The present invention discloses a kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method, comprise tool setting rod, camera and treater, tool setting rod is installed on the chuck of lathe, above the hatch door that camera is fixedly installed in lathe and be positioned at above tool setting rod, the camera lens of camera aims at tool setting rod front end, the visual field horizontal direction of the installation angle of camera overlaps with tool setting rod axis, and the signal output terminal of camera is connected with the CNC system for lathe of digital controlled lathe by treater. The present invention is by the digital picture of the lathe tool of installation on collected by camera digital controlled lathe, digital picture is sent to treater, and treater identification is each Lathe tool tip point, and the cutter calculated is worth write CNC system for lathe partially, cut without the need to examination or contact measurement, completing tool setting fast. Abrasion and the breakage of cutter can also be monitored, it is achieved the compensation of tool abrasion and cutter breakage alarm, prevent mishap and avoid unnecessary loss. Easy to use, working efficiency height, has the value applied.
Description
Technical field
The present invention relates to a kind of lathe in machining technology, particularly relate to a kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method.
Background technology
Tool setting is one of technological preparation work comparatively complicated in lathe in machining, and the accuracy of tool setting is by the working accuracy of the establishment and part that directly have influence on work program, and meanwhile, tool setting efficiency also directly affects lathe in machining efficiency. Due to randomness when tool type is different and installs, it is often different the position of the cutter location of cutter in lathe coordinate system, if the cutter used during to operate zero is as land-value model, then there is a relative position deviation between other cutters and basic-cutter cutter location, namely so-called cutter is worth partially, and a groundwork of aim at tool operation is exactly determine that non-referenced cutter is worth partially relative to the cutter of land-value model.
At present, the presetting cutter method that digital controlled lathe is conventional comprises: Test-cut met tool setting, special tool setting gauge tool setting etc. Comparatively speaking Test-cut met tool setting does not need utility appliance, and method is simple, but consuming time longer, and state of the art and work mood to operator rely on relatively big, and tool setting precision is not high; Special tool setting gauge tool setting and automatic tool preset can obtain higher tool setting efficiency and precision; but cost is too high, still needs certain shutdown or account for machine regulation time, the performance of digital controlled lathe rapidly and efficiently function is restricted; consequently, it is desirable to a kind of new presetting cutter method is born.
Summary of the invention
The object of the present invention is just to provide a kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Numerical control lathe adjusting tool device based on machine vision of the present invention comprises tool setting rod, camera and treater, described tool setting rod is installed on the chuck of described lathe, above the hatch door that described camera is fixedly installed in described lathe and be positioned at above described tool setting rod, the camera lens of described camera aims at tool setting rod front end, the visual field horizontal direction of the installation angle of camera overlaps with tool setting rod axis, and the signal output terminal of described camera is connected by the CNC system for lathe of described treater with described digital controlled lathe.
Numerical control lathe adjusting tool method based on machine vision of the present invention comprises the following steps:
(1) spindle of numerical control lathe revolution axis identification and viewing field of camera directional adjustment: camera is taken pictures and read digital picture, treater extracts tool setting rod front end axle section edge line feature in visual field, calculate and record the angle between spindle of numerical control lathe rotating shaft line position and visual field horizontal direction and the position of end face before tool setting rod, treater turns round axis direction according to the angle correcting camera visual field horizontal direction calculated and spindle of numerical control lathe and overlaps, and then viewing field of camera after calibration is determined the direction of lathe coordinate system, the position (Z0) of end face before main shaft gyration axial location (X0) and tool setting rod,
(2) camera measuring accuracy measures: changing land-value model is current cutter, moving cutting tool is near tool setting plane rod end, after cutter enters viewing field of camera, processor instruction camera is taken pictures, and read digital picture, from digital control system, read current mechanical coordinate simultaneously, it is recorded as (X1, Z1), the point of a knife point of treater identification cutter, the coordinate of record cutter location in viewing field of camera system of coordinates, be recorded as (X1 ', Z1 '), in visual field, moving cutting tool is to new location, cutter is all changed in the position in viewing field of camera system of coordinates two directions, camera is taken pictures and is read digital picture, from digital control system, read current mechanical coordinate simultaneously, it is recorded as (X2, Z2), the point of a knife point of treater identification cutter, the coordinate of record point of a knife point in viewing field of camera system of coordinates, be recorded as (X2 ', Z2 '), now can measure the measuring accuracy of camera in lathe coordinate system X-axis and Z axle to be respectively:
X-axis measuring accuracy
Z axle measuring accuracy
The cutter in land-value model two directions that processor for recording calculates is worth partially, install or change after workpiece, for concrete workpiece, only need to the distance input treater of the workpiece coordinate system initial point distance chuck end face measured, treater just can directly calculate land-value model on the basis of X base and partially be worth relative to the cutter of workpiece coordinate system, write digital control system, calls for program;
(3) all the other cutters being arranged on knife rest are changed to current cutter spacing, moving cutting tool is near tool setting plane rod end, after cutter enters viewing field of camera, camera is taken pictures and is read digital picture, from digital control system, read current cutter n and current mechanical coordinate simultaneously, it is recorded as (Xn, Zn), the point of a knife point of treater identification cutter, the coordinate of record point of a knife point in viewing field of camera system of coordinates, be recorded as (Xn ', Zn '), utilize the mechanical coordinate (X1 of the land-value model of camera measuring accuracy mark time recording, the coordinate of Z1) and with it corresponding cutter location in viewing field of camera (X1 ', Z1 '), camera X-axis measuring accuracy �� X, camera Z axle measuring accuracy �� Z, current lathe tool can be calculated partially be worth relative to the cutter in land-value model two directions and be:
NX=2 ��X(Xn��-X1��)-(Xn-X1)
NZ=��Z(Zn��-Z1��)-(Zn-Z1)
The current cutter that treater calculates is worth partially relative to the cutter in land-value model two directions, and write digital control system, calls for program; With reason, the mensuration that the cutter of all the other cutters that complete to be arranged on knife rest is worth partially.
The useful effect of the present invention is:
The present invention is a kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method, compared with prior art, the present invention is by the digital picture of the lathe tool of installation on collected by camera digital controlled lathe, digital picture is sent to treater, treater identification is each Lathe tool tip point, and the cutter calculated is worth write CNC system for lathe partially, it is not necessary to examination is cut or contacts measurement, completes tool setting fast.Abrasion and the breakage of cutter can also be monitored, it is achieved the compensation of tool abrasion and cutter breakage alarm, prevent mishap and avoid unnecessary loss. Easy to use, working efficiency height, has the value applied.
Accompanying drawing explanation
Fig. 1 is that position view installed by camera of the present invention;
Fig. 2 is the system architecture diagram of the present invention;
Fig. 3 is the viewing field of camera schematic diagram of the present invention;
Fig. 4 is that the present invention determines main shaft gyration axial location, viewing field of camera directional adjustment schematic diagram;
Fig. 5 is the structural representation that the present invention demarcates camera measuring accuracy;
Fig. 6 is that the present invention measures all the other cutters and is partially worth schematic diagram relative to the cutter of land-value model;
Position view installed by the camera that Fig. 7 is lathe tool of the present invention abrasion and breakage monitoring.
In figure: 1-camera, 2-tool setting rod, 3-chuck, 4-workpiece, 5-lathe tool detection camera, A-viewing field of camera system of coordinates, B-lathe coordinate system, C-viewing field of camera.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1 to Figure 3: the numerical control lathe adjusting tool device based on machine vision of the present invention comprises tool setting rod 2, camera 1 and treater, tool setting rod 2 is installed on the chuck 3 of lathe, above the hatch door that camera 1 is fixedly installed in lathe and be positioned at above tool setting rod 2, the camera lens of camera 1 aims at tool setting rod 2 front ends, the visual field horizontal direction of the installation angle of camera 1 overlaps with tool setting rod 2 axis, and the signal output terminal of camera 1 is connected with the CNC system for lathe of digital controlled lathe by treater.
Numerical control lathe adjusting tool method based on machine vision of the present invention is as follows:
As shown in Figure 4: spindle of numerical control lathe revolution axis identification and viewing field of camera directional adjustment: camera 1 is taken pictures and read digital picture, treater extracts tool setting rod 2 front end axle section edge line features in visual field, calculate and record the angle between spindle of numerical control lathe rotating shaft line position and visual field horizontal direction and the position of end face before tool setting rod 2, treater turns round axis direction according to the angle correcting camera visual field C horizontal direction calculated and spindle of numerical control lathe and overlaps, and then viewing field of camera C after calibration determines the direction of lathe coordinate system B, the position (Z0) of end face before main shaft gyration axial location (X0) and tool setting rod 2,
As shown in Figure 5: camera 1 measuring accuracy measures: changing land-value model is current cutter, moving cutting tool is near tool setting rod 2 end faces, after cutter enters viewing field of camera C, processor instruction camera 1 is taken pictures, and read digital picture, from digital control system, read current mechanical coordinate (coordinate of viewing field of camera system of coordinates A) simultaneously, it is recorded as (X1, Z1), the point of a knife point of treater identification cutter, the coordinate of record cutter location in viewing field of camera system of coordinates A, be recorded as (X1 ', Z1 '), in viewing field of camera C, moving cutting tool is to new location, cutter is all changed in the position in viewing field of camera system of coordinates A two directions, camera 1 is taken pictures and is read digital picture, from digital control system, read current mechanical coordinate simultaneously, it is recorded as (X2, Z2), the point of a knife point of treater identification cutter, the coordinate of record point of a knife point in viewing field of camera system of coordinates A, be recorded as (X2 ', Z2 '), now can measure camera 1 to be respectively in the measuring accuracy in the X-axis and Z axle of lathe coordinate system B:
X-axis measuring accuracy
Z axle measuring accuracy
The cutter in land-value model two directions that processor for recording calculates is worth partially, install or change after workpiece 4, for concrete workpiece 4, only need to the distance input treater of workpiece 4 coordinate origin distance chuck 3 end face measured, treater just can directly calculate land-value model on the basis of X base and partially be worth relative to the cutter of workpiece 4 system of coordinates, write digital control system, calls for program;
As shown in Figure 6: change all the other cutters being arranged on knife rest to current cutter spacing, moving cutting tool is near tool setting rod 2 end faces, after cutter enters viewing field of camera C, camera 1 is taken pictures and is read digital picture, from digital control system, read current cutter n and current mechanical coordinate simultaneously, it is recorded as (Xn, Zn), the point of a knife point of treater identification cutter, the coordinate of record point of a knife point in viewing field of camera system of coordinates A, be recorded as (Xn ', Zn '), utilize the mechanical coordinate (X1 of the land-value model of camera measuring accuracy mark time recording, the coordinate of Z1) and with it corresponding cutter location in viewing field of camera C (X1 ', Z1 '), the X-axis measuring accuracy �� X of camera 1, the Z axle measuring accuracy �� Z of camera 1, current lathe tool can be calculated partially be worth relative to the cutter in land-value model two directions and be:
NX=2 ��X(Xn��-X1��)-(Xn-X1)
NZ=��Z(Zn��-Z1��)-(Zn-Z1)
The current cutter that treater calculates is worth partially relative to the cutter in land-value model two directions, and write digital control system, calls for program; With reason, the mensuration that the cutter of all the other cutters that complete to be arranged on knife rest is worth partially.
Embodiment one:
As shown in Figure 7: in the course of processing, the open area do not interfered with workholder on digital controlled lathe installs a lathe tool detection camera 5 again, can be used for lathe tool abrasion and damaged detection, and the inclined pH-value determination pH of cutter of the cutter changed in the course of processing. Lathe tool detection camera 5 is installed on the back upper place in cabin. According to aforementioned method, lathe tool detection camera 5 is installed and lathe tool detection camera 5 is carried out dimensional precision demarcation.
Before processing starts, available programs control comprises each of land-value model and cutter is moved into lathe tool detection camera 5 visual field, gathers each the initial number image of cutter, and records the information such as mechanical coordinate; In the course of processing, can controlling moving cutting tool at the appropriate time and enter lathe tool detection camera 5 visual field, capturing digital image also records the information such as mechanical coordinate; Comparing with corresponding initial pictures by the cutter digital picture gathered in the course of processing, the variable quantity of cutter position of cusp is tool abrasion, the abrasion loss write digital control system calculated, it is achieved the compensation of tool abrasion; After abrasion loss change threshold is set, can judge that tool wear lost efficacy or cutter breakage.
The mensuration that the cutter of the cutter relative datum cutter changed in the course of processing is worth partially also can complete in the visual field of lathe tool detection camera 5. After having changed cutter, moving cutting tool enters the visual field of lathe tool detection camera 5, gathers image and records mechanical coordinate, and after comparing calculating by the land-value model information of aforementioned method and record, the cutter of the cutter relative datum cutter that can directly obtain replacing is worth partially.
The present invention is originally many digital picture of lathe tool by what install on digital camera collection digital controlled lathe, while capturing digital image, treater reads digital controlled lathe mechanical coordinate corresponding to record from CNC system for lathe, digital picture is sent to treater, treater identification is each Lathe tool tip point, each Lathe tool tip point coordinate figure and corresponding mechanical coordinate value in viewing field of camera can be calculated is utilized each cutter to be worth partially relative to the cutter of land-value model, and the cutter calculated is worth write CNC system for lathe partially, cut without the need to examination or contact measurement, complete tool setting fast. the present invention can also by gathering the same digital picture cutter different steps in the course of processing, after comparing calculating, the abrasion of monitoring cutter and breakage, it is achieved the compensation of tool abrasion and cutter breakage alarm, prevent mishap and avoid unnecessary loss.With the use of fixed length and have locating structure tool setting rod, also can process the particular location calculating chuck end face, trade union college or change after, only need to measure the distance of Workpiece zero point to chuck end face, standard cutter can be obtained after calculating partially to be worth relative to the cutter of workpiece coordinate system initial point, simplify the aim at tool operation process after trade union college or replacing.
More than show and describe the ultimate principle of the present invention and the advantage of main feature and the present invention. The technician of the industry should understand; the present invention is not restricted to the described embodiments; the principle that the present invention is just described described in above-described embodiment and specification sheets; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention. The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. the numerical control lathe adjusting tool method based on machine vision, it is characterised in that, comprise the following steps:
(1) spindle of numerical control lathe revolution axis identification and viewing field of camera directional adjustment: camera is taken pictures and read digital picture, treater extracts tool setting rod front end axle section edge line feature in visual field, calculate and record the angle between spindle of numerical control lathe rotating shaft line position and visual field horizontal direction and the position of end face before tool setting rod, treater overlaps according to the angle correcting camera visual field horizontal direction calculated and spindle of numerical control lathe revolution axis direction, and then determines direction, the main shaft gyration axial location (X of lathe coordinate system in viewing field of camera after calibration0) and tool setting rod before the position (Z of end face0);
(2) camera measuring accuracy measure: change land-value model be current cutter, moving cutting tool near tool setting plane rod end, after cutter enters viewing field of camera, processor instruction camera is taken pictures, and read digital picture, from digital control system, read current mechanical coordinate simultaneously, it is recorded as (X1, Z1); The point of a knife point of treater identification cutter, the coordinate of record cutter location in viewing field of camera system of coordinates, is recorded as (X1', Z1'), in visual field, moving cutting tool is to new location, and cutter is all changed in the position in viewing field of camera system of coordinates two directions, and camera is taken pictures and read digital picture, reads current mechanical coordinate simultaneously, be recorded as (X from digital control system2, Z2), the point of a knife point of treater identification cutter, the coordinate of record point of a knife point in viewing field of camera system of coordinates, is recorded as (X2', Z2'), now can measure the measuring accuracy of camera in lathe coordinate system X-axis and Z axle and be respectively:
X-axis measuring accuracy
Z axle measuring accuracy
The cutter in land-value model two directions that processor for recording calculates is worth partially, install or change after workpiece, for concrete workpiece, only need to the distance input treater of the workpiece coordinate system initial point distance chuck end face measured, treater just can directly calculate land-value model on the basis of X base and partially be worth relative to the cutter of workpiece coordinate system, write digital control system, calls for program;
(3) all the other cutters being arranged on knife rest are changed to current cutter spacing, moving cutting tool is near tool setting plane rod end, and after cutter enters viewing field of camera, camera is taken pictures and read digital picture, from digital control system, read current cutter n and current mechanical coordinate simultaneously, it is recorded as (Xn, Zn), the point of a knife point of treater identification cutter, the coordinate of record point of a knife point in viewing field of camera system of coordinates, is recorded as (Xn', Zn'), utilize the mechanical coordinate (X of the land-value model of camera measuring accuracy mark time recording1, Z1) and coordinate (X in viewing field of camera of corresponding with it cutter location1', Z1'), camera X-axis measuring accuracy �� X, camera Z axle measuring accuracy �� Z, current lathe tool can be calculated and be partially worth relative to the cutter in land-value model two directions and be:
NX=2 ��X(Xn��-X1��)-(Xn-X1)
NZ=��Z(Zn��-Z1��)-(Zn-Z1)
The current cutter that treater calculates is worth partially relative to the cutter in land-value model two directions, and write digital control system, calls for program;With reason, the mensuration that the cutter of all the other cutters that complete to be arranged on knife rest is worth partially.
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| CN201410321082.XA CN104190963B (en) | 2014-07-07 | 2014-07-07 | A kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method |
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| CN201410321082.XA CN104190963B (en) | 2014-07-07 | 2014-07-07 | A kind of numerical control lathe adjusting tool device based on machine vision and presetting cutter method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705689A (en) * | 2018-05-25 | 2018-10-26 | 哈尔滨工业大学 | Heavy caliber precision optics plane of crystal microdefect reparation automatic tool preset process |
| CN109787063A (en) * | 2018-12-10 | 2019-05-21 | 上海航天设备制造总厂有限公司 | Conducting slip ring dissimilar material pressure pouring part CNC lathe work |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105436532B (en) * | 2016-01-29 | 2017-07-14 | 菏泽学院 | The presetting cutter method of numerically controlled lathe automatic tool setting device |
| CN108788200B (en) * | 2018-07-06 | 2020-02-21 | 广东工业大学 | Tool setting method, system and device |
| CN111633471B (en) * | 2020-05-15 | 2022-05-13 | 苏州陈那自动化技术有限公司 | Optical tool setting gauge and tool setting method |
| CN112355715A (en) * | 2020-11-11 | 2021-02-12 | 广东鸿特精密技术（台山）有限公司 | Cutter wearing and tearing automatic checkout device |
| CN112589531B (en) * | 2020-11-11 | 2022-04-08 | 河北太行机械工业有限公司 | Numerical control machining tool setting method for middle profiling tool |
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| JPS597504A (en) * | 1982-07-05 | 1984-01-14 | Kanto Tokushu Seikou Kk | Tool origin setting device of numerically controlled machine tool |
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| US4214191A (en) * | 1976-09-29 | 1980-07-22 | Okuma Machinery Works Ltd. | System for automatic management of tool life |
| TW201024005A (en) * | 2008-12-31 | 2010-07-01 | Metal Ind Res & Dev Ct | Turning tool calibration method with a non-contact measurement apparatus mounted on the machine and the processing machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108705689A (en) * | 2018-05-25 | 2018-10-26 | 哈尔滨工业大学 | Heavy caliber precision optics plane of crystal microdefect reparation automatic tool preset process |
| CN108705689B (en) * | 2018-05-25 | 2020-05-26 | 哈尔滨工业大学 | Automatic tool setting process method for repairing surface microdefects of large-caliber precise optical crystal |
| CN109787063A (en) * | 2018-12-10 | 2019-05-21 | 上海航天设备制造总厂有限公司 | Conducting slip ring dissimilar material pressure pouring part CNC lathe work |
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