CN112404743A - Corner cutting method and system of laser pipe cutting machine - Google Patents
Corner cutting method and system of laser pipe cutting machine Download PDFInfo
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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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
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- B23K26/0626—Energy control of the laser beam
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- 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
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- 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
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Abstract
The embodiment of the application belongs to the field of laser cutting numerical control, and relates to a method and a system for cutting a corner of a laser pipe cutting machine. The technical scheme provided by the application comprises the following steps: acquiring a corner laser power adjustment coefficient and a corner follow-up height offset value; judging whether the cutting is corner cutting in real time in the cutting process; and if the corner is cut, adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value. Whether the corner cutting is carried out is judged in real time in the cutting process, if the corner cutting is carried out, the corner laser power regulating coefficient and the corner follow-up height offset value can be written into the corresponding function regulating interface, and the laser power value and the follow-up height value are corrected in real time, so that various bad problems caused by the corner cutting are simply and efficiently automatically treated, and the cutting quality, efficiency and stability of the corner cutting are greatly improved.
Description
Technical Field
The application relates to laser cutting numerical control, in particular to a method and a system for cutting corners of a laser pipe cutting machine.
Background
With the improvement of the machine tool structure of the laser pipe cutting machine and the improvement of the cutting process, pipes and sections which can be processed are more and more, circular pipes can be processed, pipes such as triangular pipes and rectangular pipes can also be processed, even sections such as L-shaped steel, channel steel and I-shaped steel are processed, but the cutting quality of corners is often poor when the pipes or the sections with the corners are cut, and the condition that a nozzle of a cutting head collides with the pipes often occurs. On one hand, because the thickness consistency of the plane part and the corner part cannot be ensured in the pipe manufacturing process, as shown in fig. 2, the thickness of the plane part of the rectangular pipe is T1, but the thickness of the corner part is T2 which is obviously larger than T1; on the other hand, when the pipe corner is cut, the surface of the nozzle of the cutting head and the dead area of the pipe corner are changed, as shown in fig. 3, because the laser cutting depends on the nozzle part of the cutting head as one pole of the capacitance sensor, the cut workpiece is used as the other pole, the dead area between the two poles influences the capacitance value, the distance between the nozzle of the cutting head and the pipe is influenced, the distance between the nozzle of the cutting head and the pipe is often reduced at the corner, and thus, the collision between the nozzle of the cutting head and the cut pipe can be caused, and the change of the cutting focus can also be.
The traditional method is to reduce the cutting speed at the corner, thereby preventing the problems of incomplete cutting, poor quality of a cutting section and collision between a nozzle of a cutting head and the corner in the cutting process, but the speed parameter for cutting a specific pipe must be subjected to a great amount of tests, the cutting efficiency of the whole pipe is reduced because the cutting quality of the corner needs to be considered, in addition, the feeding speed of the corner needs to be specially processed by CAM software when a program is generated, and the operability is also low.
Disclosure of Invention
The invention aims to provide a method and a system for cutting a corner of a laser pipe cutting machine, which are used for correcting a laser power value and a follow-up height value in real time, so that various problems caused by corner cutting are simply and efficiently automatically treated, and the cutting quality, efficiency and stability of the corner cutting machine are greatly improved.
In order to solve the above-mentioned problems, embodiments of the present invention provide the following technical solutions:
a corner cutting method of a laser pipe cutting machine comprises the following steps:
acquiring a corner laser power adjustment coefficient and a corner follow-up height offset value;
and judging whether the corner cutting is carried out in real time in the cutting process, and if the corner cutting is carried out, adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value.
Further, the step of judging whether the corner is cut in real time in the cutting process comprises the following steps:
judging the speed of the rotating shaft in real time in the cutting process;
if the speed of the rotating shaft is greater than zero, a corner cut is made.
Further, if the corner cutting is performed, the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value includes:
multiplying the instruction laser power value by the corner laser power regulation coefficient to obtain the actual laser power value actually output to the laser, wherein the instruction laser power value is PCThe corner laser power adjustment coefficient is CPThe actual laser power value is PA＝PC×CP。
Further, if the corner cutting is performed, the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value further includes:
will follow up command height HCPlus the corner follow-up height offset value HOObtainingThe actual follow-up height H finally output to the follow-up controllerAWherein the follow-up command height is HCThe corner follow-up height offset value is HOActual follow-up height of HA＝HC+HO。
Further, after the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value if the corner is cut, the method further includes:
and after the corner cutting is finished, restoring the parameters of the plane machining before the adjustment.
Further, the step of restoring the parameters of the planar processing before adjustment after the corner cutting is completed comprises:
the actual laser power value PASetting as not adjusting or adjusting the corner laser power by a factor CPSet to 1, the actual laser power value PACommand power PCAnd stopping changing the follow-up command height HCOr offset the corner follow-up height by HOSet to 0, make the actual follow-up height HAFollow-up command height HC。
Further, the start and finish of the corner cut is determined by judging the magnitude of the rotation axis speed in a CNC kernel interpolator.
Further, the laser power value and the follow-up height value during the corner cutting process are corrected in a CNC (computer numerical control) kernel interpolator.
In order to solve the technical problem provided above, an embodiment of the present invention further provides a corner cutting system for a laser pipe cutting machine, which adopts the following technical solutions:
a laser pipe cutter corner cutting system comprising:
the acquisition module is used for acquiring a corner laser power adjustment coefficient and a corner follow-up height offset value;
the judging module is used for judging whether the cutting is corner cutting in real time in the cutting process;
and the adjusting module is used for adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjusting coefficient and the corner follow-up height offset value if the corner is cut.
Compared with the prior art, the embodiment of the invention mainly has the following beneficial effects:
a method and a system for cutting the corner of a laser pipe cutting machine judge whether the speed of a rotating shaft is greater than zero in real time in the cutting process, if so, the corner is cut, the corner laser power regulating coefficient and the corner follow-up height offset value can be written into the corresponding function regulating interface, the instruction laser power value is multiplied by the corner laser power regulating coefficient to obtain the actual laser power value which is actually output to the laser, real-time correcting the laser power value, adding the following command height to the offset value of the corner following height to obtain the actual following height finally output to the following controller, correcting the follow-up height value in real time, recovering the parameters of the plane machining before adjustment after the corner cutting is finished, therefore, a plurality of bad problems occurring in corner cutting are simply and efficiently automatically processed, and the cutting quality, efficiency and stability are greatly improved.
Drawings
In order to illustrate the solution of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the invention, and that other drawings may be derived from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a block flow diagram of a method for cutting a corner of a laser pipe cutter in an embodiment of the present invention;
FIG. 2 is a schematic illustration of the non-uniformity of the plane and corner thickness of a rectangular tube in an embodiment of the present invention;
FIG. 3 is a schematic view of a corner cut of a rectangular tube according to an embodiment of the present invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprising" and "having," and any variations thereof, in the description and claims of the present invention and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the relevant drawings.
Examples
The embodiment of the invention provides a corner cutting method of a laser pipe cutting machine, which can be applied to cutting and processing of pipes/sectional materials with corners, such as rectangular pipes, triangular pipes, L-shaped steel, channel steel, I-shaped steel and the like.
As shown in fig. 1 to 3, the corner cutting method of the laser pipe cutting machine includes the following steps:
acquiring a corner laser power adjustment coefficient and a corner follow-up height offset value;
judging whether the cutting is corner cutting in real time in the cutting process;
and if the corner is cut, adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value.
According to the corner cutting method of the laser pipe cutting machine, whether the corner cutting is carried out is judged in real time in the cutting process, if the corner cutting is carried out, the corner laser power adjusting coefficient and the corner follow-up height offset value can be written into the corresponding function adjusting interface, and the laser power value and the follow-up height value are corrected in real time, so that various bad problems caused by the corner cutting are simply and efficiently automatically processed, and the cutting quality, efficiency and stability of the corner cutting machine are greatly improved.
In the step of obtaining the corner laser power adjustment coefficient and the corner follow-up height offset value, two process parameter setting interfaces are added in laser cutting control software, and are the corner laser cutting power adjustment coefficient and the corner follow-up height offset value respectively.
It should be noted that, in laser cutting processing, the contour of the corner of the pipe is usually broken into small line segments by using CAM software, and the lengths of the small line segments are different according to the cutting accuracy requirement, because the fitting and speed planning technology of CNC to the small line segments, the speed when cutting the corner is lower than the speed of the cutting plane, if the laser power is not well adjusted, the corner is easily over-burned, which affects the processing quality. Therefore, according to the requirements of the cutting process, the corner cutting power is smaller than the planar cutting power, so the value of the corner laser power adjustment coefficient is generally larger than zero and smaller than or equal to one, that is, the laser power in the corner cutting process is reduced. For the situation that the thickness of the corner of the pipe is larger than the plane, the laser power needs to be increased, and the adjustment coefficient of the corner laser power can be larger than or equal to one at the moment, namely the laser power of the corner cutting process is correspondingly increased.
In the laser cutting process, in order to ensure that the distance between a laser focus and the surface of a processed plate is constant, the capacitance sensor principle is adopted, the capacitance value between the surface of the nozzle at the tail end of the cutting head and the plate is always ensured to be constant, namely, the distance between the nozzle and the plate and the capacitance value have a one-to-one correspondence relationship, and the distance between the nozzle and the plate can be ensured to be constant as long as the capacitance value between the nozzle and the plate is ensured to be constant in the laser cutting process. The laser cutting follow-up control function is that the principle is used, and the up-and-down action of the cutting head is determined and adjusted by measuring the capacitance value of the capacitor formed by the nozzle and the plate, so that the relative position of the laser focus and the surface of the plate is fixed. However, in the corner cutting process of the pipe, because the surface of the workpiece to be machined is not a plane but an arc surface, the facing area of the nozzle surface and the pipe is reduced relative to the plane, but the CNC follow-up control controls the cutting head to move, the capacitance value is kept unchanged, and the formula capacitance calculation formula C ═ epsilon S/4 pi kd (where C is the capacitance value, S is the facing area between the polar plates, and d is the distance between the polar plates) shows that, under the condition that the capacitance value C is unchanged, the distance d between the two polar plates is reduced when S is reduced. Therefore, the distance between the nozzle and the pipe is reduced, and the cutting head collides with the pipe. The purpose of setting the corner follower height offset value is to increase the follower command height.
The step of judging whether the corner is cut in real time in the cutting process comprises the following steps:
and judging the speed of the rotating shaft in real time in the cutting process, and if the speed of the rotating shaft is greater than zero, cutting the corner.
In the embodiment of the invention, the start and the finish of corner cutting are determined by judging the speed of a rotating shaft in a CNC (computerized numerical control) kernel interpolator; in other embodiments, corners are distinguished through CAM software, and power adjustment parameters and follow-up height control parameters are set for corner cutting independently; alternatively, the corner cutting power and its follow-up height are adjusted in the CNC core by setting corner start, corner end flags in the CAM software.
In order to accurately adjust the laser power value and the follow-up height value of the corner processing of the pipe/section, whether the corner enters or not needs to be accurately judged, the embodiment of the invention adopts a method for judging the speed of a rotating shaft in a CNC (computer numerical control) kernel interpolator, as shown in figure 2, the speed of an A shaft is VrSince the axis of rotation is stationary when cutting flat sections as is normally the case for rectangular tubes, the axis of rotation will only rotate when cutting corners, when the magnitude of the axis of rotation velocity | VrAnd | is greater than 0. In the CNC kernel interpolator, the resultant speed and the single-axis speed of interpolation control can be calculated in real time, the single-axis speed of a Z axis controls the upper part and the lower part of a cutting head, and the resultant speed of an X axis and a Y axis is used for controlling the laser cutting power (in laser cutting, the output of the laser power can be according to the large value of the interpolation speedThe adjustment is performed for solving the problems of non-tight cutting in the high-speed cutting process and overburning in the low-speed cutting process), therefore, when the kernel interpolator calculates the speed of each shaft, the laser power value and the follow-up height value are corrected in time when the rotation shaft speed is judged to be not zero, and the real-time performance of the adjustment can be effectively ensured.
If the speed of the rotating shaft is greater than zero, the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value comprises the following steps:
multiplying the instruction laser power value by the corner laser power regulation coefficient to obtain the actual laser power value actually output to the laser, wherein the instruction laser power value is PCThe corner laser power adjustment coefficient is CPThe actual laser power value is PA＝PC×CP。
During corner cutting, the original power is not changed along with the speed dynamic adjustment function, and only the command power value P calculated by the functionCOn the basis, the power regulation coefficient C of the corner laser cutting set by the laser cutting control software is multipliedPAs the actual power P finally output to the laserAI.e. PA＝PC×CPThe actual laser power value actually output to the laser during corner cutting can be adjusted according to the corner laser power adjustment coefficient set on the control software.
If the speed of the rotating shaft is greater than zero, the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value further comprises the following steps:
will follow up command height HCPlus the corner follow-up height offset value HOObtaining the actual follow-up height H finally output to the follow-up controllerAWherein the follow-up command height is HCThe corner follow-up height offset value is HOActual follow-up height of HA＝HC+HO。
Adjusting the laser power value and simultaneously adjusting the command follow-up height HCIs adjusted to HCIs adjusted by simply adding HCAdding a corner follow-up height offset value H set on laser cutting control softwareOSo as to obtain the actual follow-up height H finally output to the follow-up controllerAI.e. HA＝C+OThe cutting head can be lifted to a certain height when the corner of the pipe/section bar is cut, so that the height of the nozzle and the surface of the pipe are approximately consistent with the height of the plane when the pipe/section bar is cut, and poor cutting caused by the shift of a cutting focus and frequent collision of the nozzle and the corner are reduced.
In the embodiment of the invention, the laser power value and the follow-up height value in the corner cutting process are corrected in the CNC kernel interpolator, and the power and the follow-up height are specially adjusted aiming at the corner in the pipe/section cutting process so as to improve the corner cutting quality and the cutting stability; in other embodiments, the compensation adjustment can be performed on the follow-up height by automatically and accurately calculating the dead area of the nozzle and the corner according to the shape of the corner of the pipe/section; or, adjusting the cutting power and the follow-up height of the corner of the pipe/section in real time in a rapid PLC.
If the corner cutting is performed, after the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value, the method further comprises the following steps:
and after the corner cutting is finished, restoring the parameters of the plane machining before the adjustment.
After the corner cutting is finished, the step of recovering the parameters of the plane machining before the adjustment comprises the following steps:
the actual laser power value PASetting as not adjusting or adjusting the corner laser power by a factor CPSet to 1, the actual laser power value PACommand power PCAnd stopping changing the follow-up command height HCOr offset the corner follow-up height by HOSet to 0, make the actual follow-up height HAFollow-up command height HC。
When the corner cutting process is finished, the speed of the rotating shaft in the interpolator becomes zero, andcutting the line plane, wherein the laser power is required to be set to be not adjusted or the corner power is adjusted by a factor CPIs set to 1, i.e. PA＝PCNot to command power PCAnd (6) carrying out adjustment. At the same time, it is also necessary to stop changing the follower command height or set the corner follower height offset to 0, i.e., HA＝HCAnd restoring the parameters before correction.
The method for cutting the corner of the laser pipe cutting machine judges whether the speed of the rotating shaft is greater than zero in real time in the cutting process, if so, the corner is cut, the corner laser power regulating coefficient and the corner follow-up height offset value can be written into the corresponding function regulating interface, the instruction laser power value is multiplied by the corner laser power regulating coefficient to obtain the actual laser power value which is actually output to the laser, real-time correcting the laser power value, adding the following command height to the offset value of the corner following height to obtain the actual following height finally output to the following controller, correcting the follow-up height value in real time, recovering the parameters of the plane machining before adjustment after the corner cutting is finished, therefore, a plurality of bad problems occurring in corner cutting are simply and efficiently automatically processed, and the cutting quality, efficiency and stability are greatly improved.
In order to solve the technical problem provided above, an embodiment of the present invention further provides a corner cutting system for a laser pipe cutting machine, which adopts the following technical solutions:
a laser pipe cutter corner cutting system comprising:
the acquisition module is used for acquiring a corner laser power adjustment coefficient and a corner follow-up height offset value;
the judging module is used for judging whether the cutting is corner cutting in real time in the cutting process;
and the adjusting module is used for adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjusting coefficient and the corner follow-up height offset value if the corner is cut.
According to the corner cutting system of the laser pipe cutting machine, whether corner cutting is performed or not is judged in real time in the cutting process, if the corner cutting is performed, the corner laser power adjustment coefficient and the corner follow-up height offset value can be written into the corresponding function adjustment interface, and the laser power value and the follow-up height value are corrected in real time, so that various bad problems caused by corner cutting are simply and efficiently automatically processed, and the cutting quality, efficiency and stability of the corner cutting system are greatly improved.
And judging the speed of the rotating shaft in real time in the cutting process, and if the speed of the rotating shaft is greater than zero, cutting the corner.
Multiplying the instruction laser power value by the corner laser power regulation coefficient to obtain the actual laser power value actually output to the laser, wherein the instruction laser power value is PCThe corner laser power adjustment coefficient is CPThe actual laser power value is PA＝PC×CP。
Will follow up command height HCPlus the corner follow-up height offset value HOObtaining the actual follow-up height H finally output to the follow-up controllerAWherein the follow-up command height is HCThe corner follow-up height offset value is HOActual follow-up height of HA＝HC+HO。
And after the corner cutting is finished, restoring the parameters of the plane machining before the adjustment.
The actual laser power value PASetting as not adjusting or adjusting the corner laser power by a factor CPSet to 1, the actual laser power value PACommand power PCAnd stopping changing the follow-up command height HCOr offset the corner follow-up height by HOSet to 0, make the actual follow-up height HAFollow-up command height HC。
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various embodiments. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, embodiment aspects lie in less than all features of a single foregoing disclosed embodiment.
Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. It should be noted that the specific features, structures, materials or characteristics described in the embodiments and examples of the present application may be combined with each other without conflict or contradiction. The present invention is not limited to any single aspect, nor is it limited to any single embodiment, nor is it limited to any combination and/or permutation of these aspects and/or embodiments. Moreover, each aspect and/or embodiment of the invention can be utilized independently or in combination with one or more other aspects and/or embodiments thereof by one of ordinary skill in the art without contradiction.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention without limiting its scope. This invention may be embodied in many different forms and, on the contrary, these embodiments are provided so that this disclosure will be thorough and complete. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents may be substituted for elements thereof. All equivalent structures made by using the contents of the specification and the attached drawings of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.
Claims (9)
1. A corner cutting method of a laser pipe cutting machine is characterized by comprising the following steps:
acquiring a corner laser power adjustment coefficient and a corner follow-up height offset value;
judging whether the cutting is corner cutting in real time in the cutting process;
and if the corner is cut, adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value.
2. The laser pipe cutter corner cutting method of claim 1,
the step of judging whether the corner is cut in real time in the cutting process comprises the following steps:
and judging the speed of the rotating shaft in real time in the cutting process, and if the speed of the rotating shaft is greater than zero, cutting the corner.
3. The laser pipe cutter corner cutting method of claim 1,
if the corner cutting is carried out, the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value comprises the following steps:
multiplying the instruction laser power value by the corner laser power regulation coefficient to obtain the actual laser power value actually output to the laser, wherein the instruction laser power value is PCThe corner laser power adjustment coefficient is CPThe actual laser power value is PA＝PC×CP。
4. The laser pipe cutter corner cutting method of claim 1,
if the corner cutting is performed, the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value further comprises the following steps:
will follow up command height HCPlus the corner follow-up height offset value HOObtaining the actual follow-up height H finally output to the follow-up controllerAWherein the follow-up command height is HCThe corner follow-up height offset value is HOActual follow-up height of HA＝HC+HO。
5. The laser pipe cutter corner cutting method of claim 1,
if the corner cutting is performed, after the step of adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjustment coefficient and the corner follow-up height offset value, the method further comprises the following steps:
and after the corner cutting is finished, restoring the parameters of the plane machining before the adjustment.
6. The laser pipe cutter corner cutting method of claim 5,
after the corner cutting is finished, the step of recovering the parameters of the plane machining before the adjustment comprises the following steps:
the actual laser power value PASetting as not adjusting or adjusting the corner laser power by a factor CPSet to 1, the actual laser power value PACommand power PCAnd stopping changing the follow-up command height HCOr offset the corner follow-up height by HOSet to 0, make the actual follow-up height HAFollow-up command height HC。
7. The laser pipe cutter corner cutting method of any one of claims 1-8,
the start and finish of the corner cutting are determined by judging the speed of the rotating shaft in a CNC kernel interpolator.
8. The laser pipe cutter corner cutting method of any one of claims 1-8,
the laser power value and the follow-up height value in the corner cutting process are corrected in a CNC (computer numerical control) kernel interpolator.
9. A laser pipe cutter corner cutting system, comprising:
the acquisition module is used for acquiring a corner laser power adjustment coefficient and a corner follow-up height offset value;
the judging module is used for judging whether the cutting is corner cutting in real time in the cutting process;
and the adjusting module is used for adjusting the laser power value and the follow-up height value in real time according to the corner laser power adjusting coefficient and the corner follow-up height offset value if the corner is cut.
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