CN110142518B - Method for detecting precision of rotation center for laser cutting and adjusting device thereof - Google Patents
Method for detecting precision of rotation center for laser cutting and adjusting device thereof Download PDFInfo
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- CN110142518B CN110142518B CN201910424915.8A CN201910424915A CN110142518B CN 110142518 B CN110142518 B CN 110142518B CN 201910424915 A CN201910424915 A CN 201910424915A CN 110142518 B CN110142518 B CN 110142518B
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- cutting head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The invention relates to a method for detecting the accuracy of a rotation center for laser cutting, comprisingThe following steps: step A: installing a teaching nozzle at the tail of the cutting head, and B: c, measuring the length dimension b of the cutting head and the radius r of the teaching nozzle: directly reading the rotation angle alpha of the cutting head and the height difference delta H of the Z axis after the rotation by using CNC control software; step D: using formulas
And obtaining the dimension a of the vertical distance between the axial lead of the assembled cutting head and the Z axis. The invention has the advantages of accurately calculating the accuracy of the rotation center of the cutting head and ensuring that the nozzle of the cutting head keeps high accuracy in the cutting process under the condition of five-axis linkage.
Description
Technical Field
The invention relates to the technical field of laser cutting adjustment methods, in particular to a method for detecting the precision of a rotation center for laser cutting.
Background
The cutting method is characterized in that grooves are cut on plane laser equipment, or a cutting head used in three-dimensional laser equipment is driven by two rotating shafts, five shafts are generated in the use process, namely the conventional X, Y, Z shaft is additionally provided with the two rotating shafts, the precision of the conventional X/Y/Z shaft can be checked through a laser interferometer, but the problem that how to ensure the rotating precision of the other two rotating shafts is difficult to realize, namely the precision of the position of a rotating center is difficult to realize, and the problem that the cutting precision of a nozzle of the cutting head is ensured in the cutting process under the condition of five-shaft linkage is difficult to solve at present is to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for detecting the precision of a rotation center for laser cutting, which can accurately calculate the precision of the rotation center of a cutting head and can ensure that a nozzle of the cutting head keeps high precision in a cutting process under the condition of five-axis linkage.
In order to achieve the purpose, the invention provides the following technical scheme: a method for detecting the accuracy of a rotation center for laser cutting comprises the following steps:
step A: a teaching nozzle is arranged at the tail part of the cutting head,
and B: measuring the length dimension b of the cutting head and the radius r of the teaching nozzle
And C: directly reading the rotation angle alpha of the cutting head and the height difference delta h of the Z axis after the rotation by using CNC control software;
step D: using formulas
And obtaining the dimension a of the vertical distance between the axial lead of the assembled cutting head and the Z axis.
Preferably, the lower part of the teaching nozzle is a smooth hemisphere, one side of the hemisphere is integrally connected with a cylinder, the cylinder is integrally connected with a connecting ring, and a hexagonal groove is arranged in the middle of the connecting ring in a penetrating mode.
The invention also aims to provide an adjusting device applied to a method for detecting the rotating center lightness of laser cutting, which comprises a triangular plate connected with a cutting head in a sliding manner, wherein the triangular plate is connected with a rotating motor, the rotating motor is installed in an installation block, the triangular plate is fixedly connected with an adjusting motor, the adjusting motor is connected with a screw rod, the screw rod is in threaded connection with an adjusting block fixedly connected with the cutting head, and the triangular plate is provided with a track for limiting the rotation of the adjusting block.
Preferably, set-square fixedly connected with miniature cylinder, miniature cylinder's piston rod is provided with the clutch block, one side that the clutch block was towards the regulating block is provided with the friction line, the track is provided with the breach that is used for the clutch block to pass, miniature cylinder can drive the clutch block extrusion regulating block.
Preferably, a controller connected with the adjusting motor through an electric signal is arranged in the mounting block, the controller is communicated with the micro cylinder through an electric signal, and the controller is connected with CNC control software.
Preferably, the semicircle board is installed at the top of set-square, extrusion cylinder is installed at the top of semicircle board, extrusion cylinder is connected with and is in the cutting head top and be used for the extrusion piece of extrusion cutting head.
In conclusion, the invention has the following beneficial effects:
1. the installation is assembled by parts, and the machining of each place cannot be guaranteed to have no error, so that a gap exists in the installation process and the rotation has deviation
The dimension a of the vertical distance between the axial lead of the assembled cutting head and the Z axis can be easily obtained, so that the dimension a can be adjusted, the high accuracy is achieved, the aim of difficult measurement is fulfilled, in addition, the CNC control software can be utilized to detect data in real time in the five-axis linkage rotating process, the change of the dimension a can be timely adjusted when the change is found, and the high accuracy before and during the operation is improved;
2. the invention adopts the teaching nozzle, can conveniently utilize the teaching nozzle to cooperate with a formula to calculate the position dimension a, and if the teaching nozzle is not available, the calculation cannot be carried out;
3. the rotating motor can drive the set square to rotate so as to drive the cutting head to rotate, in addition, when the size a needs to be adjusted, the adjusting motor drives the screw rod to rotate, and the adjusting block cannot rotate around the axis of the adjusting block due to the limitation of the track, so that the adjusting block can move along the length direction of the screw rod due to the rotation of the screw rod, and the adjusting block can also stably move under the guide effect of the track in the process;
4. the micro cylinder drives the friction block to move, so that the side face of the adjusting block can be extruded, and further the stability of the adjusting block is further enhanced when the adjusting motor does not operate any more;
5. when the size a is not required through calculation, the controller can drive the adjusting motor to drive the adjusting block to move so as to adjust the position of the cutting head, so that the size a can be adjusted;
6. when the cutting head no longer rotates or removes, take place to rock easily among the cutting process, extrusion cylinder drives the extrusion piece and removes until the extrusion cutting head this moment, strengthens the stability of cutting head, and the semicircle board can play the effect of sheltering from in addition, and thermoelectricity when avoiding the welding harms the staff.
Drawings
FIG. 1 is a schematic structural diagram of a teaching nozzle in an embodiment;
FIG. 2 is a schematic view of the embodiment without a rotary nozzle;
FIG. 3 is a schematic diagram illustrating a structure of the rotary teaching nozzle according to the embodiment;
FIG. 4 is a schematic view of a non-mounted nozzle of the embodiment in a non-rotated configuration;
FIG. 5 is a schematic diagram of a non-rotated structure of the teaching nozzle according to the embodiment;
FIG. 6 is a schematic view of the inward-facing side of the triangular plate in the embodiment;
FIG. 7 is a schematic structural diagram of the connection relationship between the mounting block, the extrusion cylinder, the extrusion block and the triangle in the embodiment.
Reference numerals: 1. a teaching nozzle; 2. a hemisphere; 3. a cylinder; 4. a connecting ring; 5. a hexagonal groove; 6. a set square; 7. a rotating electric machine; 8. adjusting the motor; 9. mounting blocks; 10. a screw; 11. an adjusting block; 12. a track; 13. a micro cylinder; 14. a friction block; 15. rubbing the lines; 16. a controller; 17. a semicircular plate; 18. an extrusion cylinder; 19. extruding the block; 20. a cutting head.
Detailed Description
The invention is further described with reference to the accompanying drawings.
A method for detecting the accuracy of a rotation center for laser cutting, as shown in fig. 1 to 7, comprising the steps of:
step A: a teaching nozzle 1 is arranged at the tail part of the cutting head 20,
and B: measuring the length b of the cutting head 20 and the radius r of the teaching nozzle 1
And C: directly reading the rotation angle alpha of the cutting head 20 and the height difference delta h of the Z axis after the rotation by using CNC control software;
step D: using formulas
The dimension a of the perpendicular distance between the axis of the assembled cutting head 20 and the Z axis is obtained.
In the step a, the mounted teaching nozzle 1 coincides with the axis of the cutting head 20.
The dimension b and the dimension r are the inherent dimension of the cutting head 20 and the machining dimension of the teaching nozzle 1, respectively, and the precise dimension can be ensured.
Above-mentioned CNC control software can adopt Shenzhen chengzhenRui science and technology limited design, also can adopt other CNC control software that market (only need reach the height difference that detects cutting head 20 turned angle alpha and cutting head 20 rotation front and back Z axle can, wherein Z axle height difference delta h indicates cutting head 20 rotation front and back, and teaching nozzle 1 is at the height difference of Z axle direction).
The lower part of the teaching nozzle 1 is provided with a smooth hemisphere 2, one side of the hemisphere 2 is integrally connected with a cylinder 3, one side of the cylinder 3, which is far away from the hemisphere 2, is integrally connected with a connecting ring 4, and the middle part of the connecting ring 4 is penetrated with a hexagonal groove 5. The hexagonal slot 5 may be used for a snap connection with the lower end of the cutting head 20. The lower extreme of cutting head 20 is provided with the hexagonal piece that closes with hexagonal groove 5, and when the hexagonal piece was in hexagonal groove 5, the hexagonal piece will extrude with the cell wall of hexagonal groove 5, realizes that cutting head 20 and teaching nozzle 1's buckle is connected.
The adjusting device applied to the detection method of the precision of the rotation center for laser cutting comprises triangular plates 6 connected with a cutting head 20 in a sliding mode, a rotating motor 7 is connected between the two triangular plates 6, the rotating motor 7 is installed in an installation block 9, one of the triangular plates 6 is fixedly connected with an adjusting motor 8, the adjusting motor 8 is connected with a screw rod 10, and the length direction of the screw rod 10 is perpendicular to the axial lead of the cutting head 20. The screw rod 10 is in threaded connection with an adjusting block 11 fixedly connected with a cutting head 20, the adjusting block 11 is rectangular and tightly attached to one side of the triangular plate 6, and the triangular plate 6 is provided with a track 12 for limiting the adjusting block 11 to rotate. The rails 12 are arranged in a long strip shape and distributed on two sides of the adjusting block 11, the width of the rails 12 is equal to the width of the adjusting block 11, therefore, the adjusting block 11 can only move along the length direction of the rails 12,
the triangle 6 fixedly connected with is in the miniature cylinder 13 of track 12 top, the piston rod of miniature cylinder 13 is provided with clutch blocks 14, one side that clutch blocks 14 faced regulating block 11 is provided with friction line 15, and the length direction of piston rod is perpendicular with the length direction of track 12, miniature cylinder 13 can drive clutch blocks 14 extrusion regulating block 11.
A controller 16 connected with the adjusting motor 8 through an electric signal is arranged in the mounting block 9, the controller 16 is communicated with the micro cylinder 13 through an electric signal, and the controller 16 is connected with CNC control software. When the size a is not required through calculation, the controller 16 can drive the adjusting motor 8 to drive the adjusting block 11 to move so as to adjust the position of the cutting head 20, so that the size a can be adjusted, and when the adjusting motor 8 is not started, the controller 16 can drive the micro cylinder 13 to drive the friction block 14 to extrude the adjusting block 11, so that the stability of the adjusting block 11 is enhanced; the above-described working principle for real-time adjustment can also be manually adjusted when the measured dimension a is not needed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.
Claims (2)
1. A device for adjusting a center of rotation for laser cutting, characterized in that: comprises a teaching nozzle (1) and an installation block (9), the lower part of the teaching nozzle (1) is set as a smooth hemisphere (2), one side of the hemisphere (2) is integrally connected with a cylinder (3), the cylinder (3) is integrally connected with a connecting ring (4), a hexagonal groove (5) is arranged in the middle of the connecting ring (4), the teaching device also comprises a triangular plate (6) which is in sliding connection with a cutting head (20), the triangular plate (6) is connected with a rotating motor (7), the rotating motor (7) is installed in the installation block (9), the triangular plate (6) is fixedly connected with an adjusting motor (8), the adjusting motor (8) is connected with a screw rod (10), the screw rod (10) is in threaded connection with an adjusting block (11) which is fixedly connected with the cutting head (20), the triangular plate (6) is provided with a track (12) which limits the rotation of the adjusting block (11), the triangle (6) is fixedly connected with a micro cylinder (13), a piston rod of the micro cylinder (13) is provided with a friction block (14), one side of the friction block (14) facing the adjusting block (11) is provided with friction grains (15), the track (12) is provided with a gap for the friction block (14) to pass through, the micro cylinder (13) can drive the friction block (14) to extrude the adjusting block (11), a controller (16) which is connected with the adjusting motor (8) through an electric signal is arranged in the mounting block (9), the controller (16) is communicated with the micro cylinder (13) through an electric signal, the controller (16) is connected with CNC control software, a semicircular plate (17) is arranged at the top of the triangular plate (6), an extrusion cylinder (18) is arranged at the top of the semicircular plate (17), the extrusion cylinder (18) is connected with an extrusion block (19) which is positioned above the cutting head (20) and is used for extruding the cutting head (20).
2. A method for detecting the accuracy of the center of rotation of laser cutting based on the device for adjustment of claim 1, characterized in that: the method comprises the following steps:
step A: a teaching nozzle (1) is arranged at the tail part of the cutting head (20),
and B: measuring the length dimension b of the cutting head (20) and the radius r of the teaching nozzle (1);
and C: directly reading the rotation angle alpha of the cutting head (20) and the height difference delta h of the Z axis after the rotation by using CNC control software;
step D: using formulas
And obtaining the dimension a of the vertical distance between the axis line of the assembled cutting head (20) and the Z axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424915.8A CN110142518B (en) | 2019-05-21 | 2019-05-21 | Method for detecting precision of rotation center for laser cutting and adjusting device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910424915.8A CN110142518B (en) | 2019-05-21 | 2019-05-21 | Method for detecting precision of rotation center for laser cutting and adjusting device thereof |
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| CN110142518A CN110142518A (en) | 2019-08-20 |
| CN110142518B true CN110142518B (en) | 2020-11-13 |
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| CN201910424915.8A Active CN110142518B (en) | 2019-05-21 | 2019-05-21 | Method for detecting precision of rotation center for laser cutting and adjusting device thereof |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5032741B2 (en) * | 2003-11-18 | 2012-09-26 | オリンパス株式会社 | 3D shape measuring method and 3D shape measuring apparatus |
| CN101784864B (en) * | 2008-06-30 | 2012-11-21 | 三菱重工业株式会社 | Method and system for calculating core shift of rotating body |
| JP2010223915A (en) * | 2009-03-25 | 2010-10-07 | Fujifilm Corp | Method and device for measuring positional variation of center line of rotation |
| CN104625880B (en) * | 2014-12-23 | 2015-12-30 | 电子科技大学 | A kind of five-axis machine tool cutter-orientation and the synchronous testing agency of point of a knife point site error |
| CN105698682B (en) * | 2016-03-18 | 2018-03-16 | 西安交通大学 | A kind of comprehensive measuring method of lathe spatial accuracy based on laser tracker |
| CN206981995U (en) * | 2017-07-24 | 2018-02-09 | 四川安和精密电子电器有限公司 | A kind of concentric welding equipment of laser |
| CN108465950B (en) * | 2018-05-24 | 2024-04-05 | 济南邦德激光股份有限公司 | Method, device and system for detecting cutting precision of laser cutting machine |
| CN109696138B (en) * | 2019-03-01 | 2024-04-09 | 中国计量大学 | Cylindricity detection device and eccentric calibration method thereof |
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Effective date of registration: 20210414 Address after: 276000 northeast of the intersection of Hefei Road and Kunming Road, Zhimadun street, economic and Technological Development Zone, Linyi City, Shandong Province Patentee after: Pentium laser technology (Shandong) Co.,Ltd. Address before: 325000 no.4258, 3rd road, Binhai Park, Wenzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: PENTA LASER (WENZHOU) Co.,Ltd. |
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Effective date of registration: 20220427 Address after: 325000 No. 4258, 3rd road, Binhai Park, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Pentium laser (Zhejiang) Co.,Ltd. Address before: 276000 northeast of the intersection of Hefei Road and Kunming Road, Zhimadun street, economic and Technological Development Zone, Linyi City, Shandong Province Patentee before: Pentium laser technology (Shandong) Co.,Ltd. |
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