CN112276350A - Laser cutting machine guiding system for accurate feeding - Google Patents
Laser cutting machine guiding system for accurate feeding Download PDFInfo
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- CN112276350A CN112276350A CN202011593756.3A CN202011593756A CN112276350A CN 112276350 A CN112276350 A CN 112276350A CN 202011593756 A CN202011593756 A CN 202011593756A CN 112276350 A CN112276350 A CN 112276350A
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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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0853—Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane
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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
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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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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Abstract
The invention provides a laser cutting machine guiding system for accurate feeding, which comprises N guiding mechanisms distributed on two sides of a cutting platform, a front positioning device and a processing device, wherein the front positioning device and the processing device are installed at the blanking end part of the cutting platform. According to the invention, the guide mechanism and the front positioning device are used for guiding and positioning the workpiece to be cut, so that the workpiece to be cut on the cutting platform is accurately positioned, the laser cutting machine can adjust the cutting path according to the shape of the workpiece to be cut, and the generation amount of waste materials is reduced as much as possible; in addition, in order to reduce errors caused by movement or loosening of a mechanical structure, UWB auxiliary positioning is adopted, and the positioning precision and form acquisition accuracy of the work material to be cut are improved to the maximum extent by combining a mode of providing images by a shooting device.
Description
Technical Field
The invention relates to the field of laser cutting machines, in particular to a laser cutting machine guiding system for accurate feeding.
Background
The existing laser cutting machine usually adopts a guide roller feeding mode to move sheet-shaped work materials onto a cutting platform, and workers manually control the area of a workpiece on the cutting platform. In order to smoothly perform the cutting process, a certain amount of margin is usually left to avoid the shortage of the workpiece during cutting. The excess work material is regarded as a cutting waste to be directly discarded after the cutting is completed. When the cutting amount is large, a large amount of work material is wasted. Moreover, since the area of the work material is small, it is difficult to reuse the work material for other purposes.
Therefore, there is a need for a way to reduce the amount of waste material in laser cutting.
Disclosure of Invention
The invention aims to provide a laser cutting machine guiding system for accurate feeding, which is characterized in that a workpiece to be cut is guided and positioned through a guiding mechanism and a front positioning device, and the workpiece to be cut on a cutting platform is accurately positioned, so that a laser cutting machine can adjust a cutting path according to the shape of the workpiece to be cut, and the generation amount of waste materials is reduced as much as possible; in addition, in order to reduce errors caused by movement or loosening of a mechanical structure, UWB auxiliary positioning is adopted, and the positioning precision and form acquisition accuracy of the work material to be cut are improved to the maximum extent by combining a mode of providing images by a shooting device.
In order to achieve the above object, the present invention provides a laser cutting machine guiding system for precise feeding, wherein a cutting platform of the laser cutting machine comprises a certain amount of parallel guide rollers, and a workpiece to be cut moves from a feeding end of the cutting platform to a discharging end opposite to the feeding end by means of the guide rollers;
the guide system comprises N guide mechanisms distributed on two sides of the cutting platform, a front positioning device and a processing device, wherein the front positioning device and the processing device are installed at the blanking end part of the cutting platform;
the front positioning device comprises M positioning cylinders, the M positioning cylinders are uniformly distributed on the blanking end part, and the connecting line of the M positioning cylinders is a straight line and is perpendicular to the moving direction of the work material to be cut;
the processing device establishes a cutting coordinate system by taking any vertex of the blanking end part of the cutting platform as an original point, wherein the cutting coordinate system is a plane coordinate system, the moving direction of the workpiece to be cut is the X direction, and the extending direction of the blanking end part of the cutting platform is the Y direction;
the processing device responds to the contact of any one positioning cylinder and the work material to be cut, stops the work material from moving, drives the guide mechanism to move along the Y direction, carries out guide processing on the work material to be cut, and drives the rest positioning cylinders to move along the X direction after the work material is guided, so that all the positioning cylinders are abutted against the top end of the work material to be cut;
the processing device sends the position coordinates of the positioning cylinder and the guide mechanism to a control platform of the laser cutting machine so as to construct form information of the work material to be cut;
and M and N are positive integers greater than 1.
Further, the pilot system comprises a fixed base station and (M + N) positioning tags;
the fixed base station is arranged on an original point, and the (M + N) positioning labels are respectively arranged on the N pilot mechanisms and the M positioning cylinders;
the positioning tag carries out TOF ranging with a fixed base station through UWB, calculates to obtain the real-time distance between the pilot mechanism or the positioning cylinder to which the positioning tag belongs and the original point, sends the calculated real-time distance to the processing device, and calculates to obtain the real-time position coordinates of the pilot mechanism and the positioning cylinder by the processing device.
Further, the process of calculating the real-time position coordinates of the guide mechanism and the positioning cylinder by the processing device comprises the following steps:
when the positioning label is installed on the positioning cylinder, the real-time position coordinates of the positioning cylinder are calculated by adopting the following formula:
in the formula (I), the compound is shown in the specification,
is the abscissa of the real-time position of the ith positioning cylinder,
is the ordinate of the real-time position of the ith positioning cylinder,
is the ordinate of the initial position of the i-th positioning cylinder,
is the real-time distance value between the ith positioning cylinder and the fixed base station,
is the distance value between the initial position of the ith positioning cylinder and the fixed base station, i =1,2, …, M;
when the positioning tag is arranged on the guiding mechanism, the real-time position coordinate of the guiding mechanism is calculated by adopting the following formula:
in the formula (I), the compound is shown in the specification,
is the abscissa of the real-time position of the jth polarization mechanism,
is the ordinate of the real-time position of the jth pilot mechanism,
Furthermore, the guide mechanism also comprises a shooting device arranged above the cutting platform, when the work material guide is completed, the processing device drives the shooting device to shoot a work material picture, and the work material picture, the guide mechanism and the real-time position coordinates of the positioning cylinder are sent to the control platform of the laser cutting machine;
and the control platform of the cutting machine adopts the real-time position coordinates of the guide mechanism and the positioning cylinder to perform form correction on the received work material picture, and form information of the work material to be cut is constructed and obtained.
Further, the guide mechanism comprises a first stepping motor, a forward rotation screw rod, a reverse rotation screw rod, a first linear guide rail, a second linear guide rail, a first material returning baffle, a second material returning baffle and a coupler;
one end of the forward rotation screw rod is connected with one end of the coupler through an angular contact bearing seat, and one end of the reverse rotation screw rod is connected with the other end of the coupler through an angular contact bearing seat;
the first linear guide rail is parallel to the forward rotation screw rod, and the second linear guide rail is positioned on an extension line of the first linear guide rail and is parallel to the reverse rotation screw rod; the first material returning baffle is mounted on the forward rotation screw rod and moves along the first linear guide rail; the second material returning baffle is arranged on the reverse screw rod and moves along a second linear guide rail;
the first stepping motor is arranged at one end, far away from the angular contact bearing seat, of the forward rotation screw rod and is electrically connected with the processing device, and the rotating speed is controlled and adjusted according to a control instruction of the processing device so that the first material returning baffle and the second material returning baffle can move in the opposite direction or in the reverse direction simultaneously.
Furthermore, the positioning cylinder comprises a third material return baffle, a third linear guide rail, a second stepping motor, a third stepping motor and a lifting mechanism;
the extending direction of the third linear guide rail is consistent with the moving direction of the work material; the third material returning baffle is arranged on the third linear guide rail, is connected with the second stepping motor through a transmission mechanism, and moves along the third linear guide rail under the action of the second stepping motor so as to be abutted against the end part of the work material or move away from the end part of the work material;
the third linear guide rail is arranged on the lifting mechanism; the lifting mechanism is connected with a third stepping motor, and carries a third linear guide rail and a third material returning baffle to lift under the action of the third stepping motor, so that the third material returning baffle is positioned above the cutting platform or is contained below the cutting platform.
Compared with the prior art, the technical scheme of the invention has the following remarkable beneficial effects:
(1) the laser cutting machine can adjust the cutting path according to the shape of the work material to be cut and reduce the waste generation amount as much as possible.
(2) In addition, in order to reduce errors caused by movement or loosening of a mechanical structure, UWB auxiliary positioning is adopted, and the positioning precision and form acquisition accuracy of the work material to be cut are improved to the maximum extent by combining a mode of providing images by a shooting device.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a laser cutting machine guide system for precise feeding of the present invention.
Fig. 2 is a schematic structural diagram of a pilot mechanism and a positioning cylinder of the present invention.
Fig. 3 is a schematic structural view of the pilot mechanism of the present invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily defined to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
Referring to fig. 1 and 2, the present invention provides a guiding system for a laser cutting machine with precise feeding, wherein a cutting platform 50 of the laser cutting machine comprises a certain amount of parallel guide rollers 40, and a work material 30 to be cut is moved from a feeding end of the cutting platform 50 to a discharging end opposite to the feeding end by means of the guide rollers 40.
The guide system comprises N guide mechanisms 10 distributed on two sides of the cutting platform 50, a front positioning device arranged at the blanking end part of the cutting platform 50 and a processing device.
The front positioning device comprises M positioning cylinders 20, the M positioning cylinders 20 are uniformly distributed on the blanking end part, and the connecting line of the M positioning cylinders 20 is a straight line and is perpendicular to the moving direction of the work material 30 to be cut.
The processing device establishes a cutting coordinate system by taking any vertex of the blanking end part of the cutting platform 50 as an origin, and the cutting coordinate system is a plane coordinate system, wherein the moving direction of the workpiece 30 to be cut is the X direction, and the extending direction of the blanking end part of the cutting platform 50 is the Y direction.
The processing device responds to the contact of any one positioning cylinder 20 and the workpiece 30 to be cut, stops the movement of the workpiece 30, drives the guide mechanism 10 to move along the Y direction, carries out guide processing on the workpiece 30 to be cut, and drives the rest positioning cylinders 20 to move along the X direction after the workpiece 30 is guided, so that all the positioning cylinders 20 are abutted against the top end of the workpiece 30 to be cut. Because the movements of the guiding mechanism 10 and the positioning cylinder 20 are realized by power equipment such as a stepping motor, the moving distances from the guiding mechanism 10 to the positioning cylinder 20 can be converted by measuring the rotating speed state of the stepping motor. Preferably, measuring devices such as corresponding position sensors may be mounted on the pilot mechanism 10 and the positioning cylinder 20 to calculate the moving distance of the pilot mechanism 10 and the positioning cylinder 20.
The processing device sends the position coordinates of the positioning cylinder 20 and the guiding mechanism 10 to a control platform of the laser cutting machine so as to construct the form information of the work material 30 to be cut.
And M and N are positive integers greater than 1.
In some examples, in conjunction with fig. 3, two opposing polarization mechanisms may be coupled together to perform relative or opposite motions. Specifically, the guide mechanism 10 includes a first stepping motor 21, a forward rotation screw rod 22, a reverse rotation screw rod 25, a first linear guide rail, a second linear guide rail 26, a first material returning baffle 27, a second material returning baffle and a coupling 24.
One end of the forward rotation screw rod 22 is connected with one end of the coupler 24 through an angular contact bearing seat 23, and one end of the reverse rotation screw rod 25 is connected with the other end of the coupler 24 through the angular contact bearing seat 23.
The first linear guide rail is parallel to the forward rotation screw rod 22, and the second linear guide rail 26 is positioned on the extension line of the first linear guide rail and is parallel to the reverse rotation screw rod 25; the first material returning baffle plate 27 is arranged on the forward rotation screw rod 22 and moves along a first linear guide rail; the second material returning baffle is arranged on the reverse screw rod 25 and moves along a second linear guide rail.
The first stepping motor 21 is installed at one end of the forward rotation screw rod 22 far away from the angular contact bearing seat 23, is electrically connected with the processing device, and controls and adjusts the rotating speed according to a control instruction of the processing device so as to enable the first material returning baffle 27 and the second material returning baffle to simultaneously move in the opposite direction or in the reverse direction.
It should be understood that for some work materials with irregular sides, in order to perform accurate positioning, a method that each guiding mechanism is independently arranged can still be adopted, and the material returning baffle plate is moved along the Y axis through a stepping motor and a transmission mechanism corresponding to each guiding mechanism so as to abut against the side face of the work material or move away from the side face of the work material.
Further, the positioning cylinder 20 includes a third material-returning baffle, a third linear guide rail, a second step motor, a third step motor and a lifting mechanism.
The extending direction of the third linear guide rail is consistent with the moving direction of the work material 30; the third material returning baffle is installed on the third linear guide rail, is connected with the second stepping motor through a transmission mechanism, and moves along the third linear guide rail under the action of the second stepping motor so as to abut against the end part of the work material 30 or move away from the end part of the work material 30.
The third linear guide rail is arranged on the lifting mechanism; the lifting mechanism is connected with a third stepping motor, and carries a third linear guide rail and a third material returning baffle to lift under the action of the third stepping motor, so that the third material returning baffle is positioned above the cutting platform 50 or is contained below the cutting platform 50.
The purpose of the lifting mechanism is to allow the parts not to be cut to be moved outside the cutting platform 50 by lowering the lifting mechanism for certain large workpieces that are specific to the cutting process. For example, if a large workpiece needs to be subjected to laser cutting in batches and in different regions, the completed part can be temporarily moved to the outside of the cutting platform 50, thereby avoiding mechanical interference.
In some examples, the present invention provides a way to directly detect the guiding mechanism 10 and the positioning cylinder 20, considering that a certain error may occur in indirectly calculating the moving distance according to the operation parameters of the stepping motor, and the error may further increase due to the loosening and the like that easily occur after the mechanical structure is used for a long time.
The pilot system comprises a fixed base station and (M + N) positioning tags.
The fixed base station is installed on the origin, and the (M + N) positioning tags are respectively installed on the N pilot mechanisms 10 and the M positioning air cylinders 20.
The positioning tag carries out TOF ranging with a fixed base station through UWB, calculates to obtain the real-time distance between the pilot mechanism 10 or the positioning cylinder 20 to which the positioning tag belongs and the original point, sends the calculated real-time distance to a processing device, and calculates to obtain the real-time position coordinates of the pilot mechanism 10 and the positioning cylinder 20 by the processing device.
The UWB measurement method is different from the position sensor described above, and the position sensor can directly detect the guiding mechanism 10 and the positioning cylinder 20, but is limited to the application scenario, and if an infrared device is used, an obstacle causing signal interference should not be present between the transmitter and the receiver. If the structure of the work material 30 is complex and the thickness of part of the area is large, the work material is easy to be shielded, and it is difficult to select a proper position to install the position sensor; similarly, for a laser cutting machine with a compact structure, the installation position of the position sensor needs to be carefully considered. The UWB measurement method does not need to consider the above factors, and based on the distance measurement principle, the distance measurement accuracy and the distance measurement speed are not affected as long as an obstacle exists in the middle of the UWB measurement method within the signal coverage range.
Preferably, the process of calculating the real-time position coordinates of the guiding mechanism 10 and the positioning cylinder 20 by the processing device includes the following steps:
(1) when the positioning tag is installed on the positioning cylinder 20, the real-time position coordinates of the positioning cylinder 20 are calculated by adopting the following formula:
in the formula (I), the compound is shown in the specification,
is the ordinate of the initial position of the i-th positioning cylinder 20,
is the real-time distance value of the i-th positioning cylinder 20 from the fixed base station,
is the distance value between the initial position of the i-th positioning cylinder 20 and the fixed base station, i =1,2, …, M.
(2) When the positioning tag is installed on the guiding mechanism 10, the real-time position coordinates of the guiding mechanism 10 are calculated by adopting the following formula:
in the formula (I), the compound is shown in the specification,
is the abscissa of the initial position of the jth polarization mechanism 10,
is the real-time distance value of the jth pilot mechanism 10 from the fixed base station,
is the distance value between the initial position of the jth pilot mechanism 10 and the fixed base station, j =1,2, …, N.
Since the moving directions of the positioning cylinder 20 and the pilot mechanism 10 are fixed to the X direction and the Y direction, respectively, the moving distance can be easily calculated from the distance values of the positioning tag and the fixed base station.
Preferably, the guiding mechanism 10 further includes a shooting device installed above the cutting platform 50, and when the guiding of the work material 30 is completed, the processing device drives the shooting device to shoot a picture of the work material 30, and the picture of the work material 30 is sent to the control platform of the laser cutting machine together with the real-time position coordinates of the guiding mechanism 10 and the positioning cylinder 20.
The control platform of the cutting machine adopts the real-time position coordinates of the guide mechanism 10 and the positioning cylinder 20 to perform form correction on the received work material 30 picture, and form information of the work material 30 to be cut is constructed and obtained. Specifically, the shooting device is a laser scanner, and can shoot the three-dimensional point cloud of the work material 30 to be cut and the corresponding three-dimensional model, and the proportion of the three-dimensional model can be adjusted through the real-time position coordinates of the guiding mechanism 10 and the positioning cylinder 20. The same holds true when the shooting device is a camera, and the relative parameters of the corresponding point positions on the shot image are adjusted through the real-time position coordinates of the guide mechanism 10 and the positioning cylinder 20, so that the shooting coordinate system is consistent with the cutting coordinate system, and the accurate positioning and form acquisition of the workpiece 30 to be cut are realized.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (6)
1. A laser cutting machine guiding system for accurate feeding is characterized in that a cutting platform of the laser cutting machine comprises a certain amount of guide rollers which are arranged in parallel, and a workpiece to be cut moves from a feeding end of the cutting platform to a discharging end opposite to the feeding end of the cutting platform by means of the guide rollers;
the guide system comprises N guide mechanisms distributed on two sides of the cutting platform, a front positioning device and a processing device, wherein the front positioning device and the processing device are installed at the blanking end part of the cutting platform;
the front positioning device comprises M positioning cylinders, the M positioning cylinders are uniformly distributed on the blanking end part, and the connecting line of the M positioning cylinders is a straight line and is perpendicular to the moving direction of the work material to be cut;
the processing device establishes a cutting coordinate system by taking any vertex of the blanking end part of the cutting platform as an original point, wherein the cutting coordinate system is a plane coordinate system, the moving direction of the workpiece to be cut is the X direction, and the extending direction of the blanking end part of the cutting platform is the Y direction;
the processing device responds to the contact of any one positioning cylinder and the work material to be cut, stops the work material from moving, drives the guide mechanism to move along the Y direction, carries out guide processing on the work material to be cut, and drives the rest positioning cylinders to move along the X direction after the work material is guided, so that all the positioning cylinders are abutted against the top end of the work material to be cut;
the processing device sends the position coordinates of the positioning cylinder and the guide mechanism to a control platform of the laser cutting machine so as to construct form information of the work material to be cut;
and M and N are positive integers greater than 1.
2. The laser cutter pilot system for precision feed of claim 1, characterized in that the pilot system comprises a fixed base station and (M + N) positioning tags;
the fixed base station is arranged on an original point, and the (M + N) positioning labels are respectively arranged on the N pilot mechanisms and the M positioning cylinders;
the positioning tag carries out TOF ranging with a fixed base station through UWB, calculates to obtain the real-time distance between the pilot mechanism or the positioning cylinder to which the positioning tag belongs and the original point, sends the calculated real-time distance to the processing device, and calculates to obtain the real-time position coordinates of the pilot mechanism and the positioning cylinder by the processing device.
3. The system of claim 2, wherein the process of calculating real-time position coordinates of the centering mechanism and the positioning cylinder by the processing device comprises the following steps:
when the positioning label is installed on the positioning cylinder, the real-time position coordinates of the positioning cylinder are calculated by adopting the following formula:
in the formula (I), the compound is shown in the specification,
is the abscissa of the real-time position of the ith positioning cylinder,
is the ordinate of the real-time position of the ith positioning cylinder,
is the ordinate of the initial position of the i-th positioning cylinder,
is the real-time distance value between the ith positioning cylinder and the fixed base station,
is the distance value between the initial position of the ith positioning cylinder and the fixed base station, i =1,2, …, M;
when the positioning tag is arranged on the guiding mechanism, the real-time position coordinate of the guiding mechanism is calculated by adopting the following formula:
in the formula (I), the compound is shown in the specification,
is the abscissa of the real-time position of the jth polarization mechanism,
is the ordinate of the real-time position of the jth pilot mechanism,
is the abscissa of the initial position of the jth pilot mechanism,
is the real-time distance value between the jth pilot mechanism and the fixed base station,
is the distance value between the initial position of the jth pilot mechanism and the fixed base station, j =1,2, …, N.
4. The laser cutting machine guiding system for precise feeding according to claim 1, wherein the guiding mechanism further comprises a shooting device installed above the cutting platform, when the work material guiding is completed, the processing device drives the shooting device to shoot a work material picture, and the work material picture is sent to the control platform of the laser cutting machine together with the real-time position coordinates of the guiding mechanism and the positioning cylinder;
and the control platform of the cutting machine adopts the real-time position coordinates of the guide mechanism and the positioning cylinder to perform form correction on the received work material picture, and form information of the work material to be cut is constructed and obtained.
5. The laser cutting machine correcting system for precise feeding according to claim 1, wherein the correcting mechanism comprises a first stepping motor, a forward rotation screw rod, a reverse rotation screw rod, a first linear guide rail, a second linear guide rail, a first material returning baffle, a second material returning baffle and a coupler;
one end of the forward rotation screw rod is connected with one end of the coupler through an angular contact bearing seat, and one end of the reverse rotation screw rod is connected with the other end of the coupler through an angular contact bearing seat;
the first linear guide rail is parallel to the forward rotation screw rod, and the second linear guide rail is positioned on an extension line of the first linear guide rail and is parallel to the reverse rotation screw rod; the first material returning baffle is mounted on the forward rotation screw rod and moves along the first linear guide rail; the second material returning baffle is arranged on the reverse screw rod and moves along a second linear guide rail;
the first stepping motor is arranged at one end, far away from the angular contact bearing seat, of the forward rotation screw rod and is electrically connected with the processing device, and the rotating speed is controlled and adjusted according to a control instruction of the processing device so that the first material returning baffle and the second material returning baffle can move in the opposite direction or in the reverse direction simultaneously.
6. The laser cutting machine guide system for precise feeding according to claim 1, wherein the positioning cylinder comprises a third material return baffle, a third linear guide rail, a second stepping motor, a third stepping motor and a lifting mechanism;
the extending direction of the third linear guide rail is consistent with the moving direction of the work material; the third material returning baffle is arranged on the third linear guide rail, is connected with the second stepping motor through a transmission mechanism, and moves along the third linear guide rail under the action of the second stepping motor so as to be abutted against the end part of the work material or move away from the end part of the work material;
the third linear guide rail is arranged on the lifting mechanism; the lifting mechanism is connected with a third stepping motor, and carries a third linear guide rail and a third material returning baffle to lift under the action of the third stepping motor, so that the third material returning baffle is positioned above the cutting platform or is contained below the cutting platform.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113240748A (en) * | 2021-04-27 | 2021-08-10 | 深圳市睿达科技有限公司 | Double-camera positioning method applied to laser cutting machine |
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| CN113240748B (en) * | 2021-04-27 | 2023-03-31 | 深圳市睿达科技有限公司 | Double-camera positioning method applied to laser cutting machine |
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