CN114523174A - Method for improving flame cutting blanking precision of steel tube arch rib cylindrical shell section base metal steel plate - Google Patents
Method for improving flame cutting blanking precision of steel tube arch rib cylindrical shell section base metal steel plate Download PDFInfo
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- CN114523174A CN114523174A CN202210251298.8A CN202210251298A CN114523174A CN 114523174 A CN114523174 A CN 114523174A CN 202210251298 A CN202210251298 A CN 202210251298A CN 114523174 A CN114523174 A CN 114523174A
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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
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
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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
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a method for improving the flame cutting blanking precision of a steel tube arch rib shell ring base metal steel plate, which comprises the following steps: the method comprises the following steps: selecting raw materials, determining the steps of a steel pipe arch rib shell section base material cutting and blanking method and corresponding raw material production equipment, and performing trial operation on the production equipment; step two: lofting a steel plate, performing numerical control programming on the full-automatic numerical control flame cutting machine, programming a running track of a cutting nozzle in a computer, and debugging relevant parameters; step three: before formal cutting, the cutting nozzle idles for one round according to numerical control programming, and the cutting running track is simulated; step four: the full-automatic numerical control flame cutting machine starts formal cutting, and four points of a cylindrical shell section base metal steel plate are still uncut after the cutting is finished; the invention improves the blanking and cutting precision of the steel plate of the base metal of the steel tube arch rib shell section, ensures that the blanking precision and quality of the steel plate are in a controllable range, and lays a foundation for the subsequent processing and manufacturing of a series of high-precision requirements of the steel tube arch rib.
Description
Technical Field
The invention belongs to the technical field of cutting and blanking, and particularly relates to a method for improving flame cutting and blanking precision of a steel tube arch rib shell section base metal steel plate.
Background
The steel tube arch rib of the steel tube concrete arch bridge has high manufacturing precision requirement, large processing difficulty, multiple processes and complex technology, so that the quality and precision of each process in the steel structure processing play an important role in the line shape of the finished bridge, the steel plate blanking cutting is used as the first processing process for manufacturing the steel tube arch rib, the steel plate blanking cutting has direct influence on the geometric dimension precision and quality of the single shell ring forming, and the subsequent processing precision of the main chord tube manufacturing, the main arch rib assembling element manufacturing and the assembly matching manufacturing is continuously influenced, so the control on the steel plate blanking cutting precision is one of the key contents for controlling the processing and manufacturing precision of the steel tube arch rib.
In the blanking and cutting process of the full-automatic numerical control flame cutting machine, the cutting nozzle continuously cuts the whole plate according to programming after the current local cutting is finished, because the whole plate area of the steel plate for the shell ring base metal is larger, the cutting path is longer, so that the phenomena of local heating, local non-heating and local cooling after heating exist on the whole steel plate at the same time, further, the phenomenon that the whole plate which should be fixed moves in the cutting process due to the uneven expansion and contraction is caused, the cutting nozzle of the full-automatic numerical control flame cutting machine always moves according to the programmed running track, finally causes the deviation of the geometric dimension of the base metal steel plate of the main chord tube formed by cutting, therefore, in the analysis, how to ensure that the base material steel plate for the shell ring does not generate movement which causes the difference of the diagonals of the finished product to exceed the standard under the full-automatic numerical control flame cutting becomes the key of the precision control of the base material steel plate for the steel tube arch rib shell ring.
The existing method for improving the flame cutting blanking precision of the steel pipe arch rib shell section base metal steel plate is complex in operation and high in manufacturing cost, cannot improve the geometric dimension precision of the steel pipe arch rib shell section base metal steel plate, and is not suitable for wide popularization and application.
Disclosure of Invention
The invention aims to provide a method for improving the flame cutting blanking precision of a steel pipe arch rib shell ring base metal steel plate, and aims to solve the problems that the existing method for improving the flame cutting blanking precision of the steel pipe arch rib shell ring base metal steel plate in the background art is complex in operation, high in manufacturing cost, incapable of improving the geometric dimension precision of the steel pipe arch rib shell ring base metal steel plate, and not suitable for wide popularization and use.
In order to achieve the purpose, the invention provides the following technical scheme: a method for improving flame cutting blanking precision of a steel tube arch rib shell ring base metal steel plate comprises the following steps:
the method comprises the following steps: selecting raw materials, determining the steps of a steel pipe arch rib shell section base material cutting and blanking method and corresponding raw material production equipment, and performing trial operation on the production equipment;
step two: setting out a steel plate, performing numerical control programming on the full-automatic numerical control flame cutting machine, programming a running track of a cutting nozzle in a computer, and debugging relevant parameters;
step three: before formal cutting, the cutting nozzle idles for one round according to numerical control programming to simulate a cutting running track;
step four: the full-automatic numerical control flame cutting machine starts formal cutting, and four points of a cylindrical shell section base metal steel plate are still uncut after the cutting is finished;
step five: manually cutting the reserved point by adopting a cutting torch, and completely cutting the reserved point during the groove cutting construction of the semi-automatic flame cutting machine.
Further, the method comprises the following steps of; in the first step, the inspection personnel performs production license inspection on the raw materials and auxiliary materials, enterprises purchase the raw materials which need legal inspection at import, effective inspection qualification certificates are required to be requested from suppliers, the relevant certificates of the suppliers are inspected from qualified suppliers, and the relevant indexes of the raw materials can be put in storage after the relevant indexes are qualified by self-inspection.
Further, the method comprises the following steps of; and step two, steel plate lofting, namely directly marking cutting lines of parts on the steel plate and reserving non-cutting points in key, wherein the lofting lines are disconnected at the reserved non-cutting points, in the step two, numerical control programming is performed, the running track of the cutting nozzle is compiled in a computer according to the design size of the cylinder section base metal steel plate, the non-cutting points are reserved during the numerical control programming, and flame cutting is stopped at the reserved points.
Further, the method comprises the following steps of; and in the third step of simulating cutting, observing whether the idle running path of the cutting torch meets the requirement, and simultaneously paying attention to whether the cutting torch is stopped at a reserved point on the running path.
Further, the method comprises the following steps of; in the fourth formal cutting step, the cutting nozzle performs flame cutting according to a programmed running track, two non-cutting points are reserved at the butt joint end of the longitudinal joint of two sides of each shell section base metal respectively, four points are reserved on a single whole plate, and the four points play a role in fixing the single whole plate and prevent the local temperature of the single whole plate from generating displacement due to cutting.
Further, the method comprises the following steps of; in the fifth step, cutting reserved points by a cutting torch, cutting four points reserved for preventing movement in the cutting stage of the full-automatic numerical control flame cutting machine on the single whole plate by the cutting torch at the stage, obtaining the single whole plate after cutting, and leaving the roots of 4 reserved points at the longitudinal seam butt joint end of each whole plate.
Further, the method comprises the following steps of; in the beveling construction in the step five, four reserved points on the whole plate are deliberately placed at the beveling construction part in the original arrangement, so that the residual roots and waste materials of the four reserved points can be cut off together by using a semi-automatic flame cutting machine in the beveling construction, and further the final shell ring base metal steel plate can be directly obtained.
Further, the method comprises the following steps of; the size and the number of the reserved points can be set after comprehensive consideration is given to the plate thickness, the area of the whole cylindrical shell section base material plate and the resistance condition of a cutting platform, and the principle is that the whole cylindrical shell section base material plate can be temporarily connected and fixed by utilizing a cut-off part in the full-automatic numerical control flame cutting stage so that the whole cylindrical shell section base material plate is not moved due to local heating.
Further, the method comprises the following steps of; the invention can be used only by utilizing the original equipment and base material in blanking and cutting of the steel plate without adding any additional material and auxiliary equipment.
Further, the method comprises the following steps of; the invention can be completely embedded into the process of steel plate blanking cutting, can match the original blanking cutting process with high wedge fit, and can improve the blanking precision of steel plate flame cutting of the base metal of the steel tube arch rib shell section due to the embedding of the invention.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method has simple procedure, does not need to add any material and auxiliary equipment, and realizes the use of the method only by utilizing the original equipment for blanking and cutting the steel plate and the parent metal.
(2) The invention can be completely embedded into the process of blanking and cutting of the steel plate, can match the original blanking and cutting process with high wedging degree, and can really realize the improvement of the blanking precision of the flame cutting of the parent metal steel plate of the steel pipe arch rib shell section due to the embedding of the invention, thereby providing great convenience for engineering construction, obtaining better economic benefit and social benefit, having simple operation, low manufacturing cost, convenient use and strong safety, having the effect of safety protection on human body, and being suitable for wide popularization and use.
Drawings
FIG. 1 is an overall flow chart of the method for improving the flame cutting blanking precision of the steel tube arch rib shell section base metal steel plate.
FIG. 2 is a schematic diagram of cutting paths of an entry steel plate and a lofting of the method for improving the flame cutting blanking precision of a steel pipe arch rib shell section base metal steel plate.
FIG. 3 is a detail diagram of a reserved point after the blanking of a full-automatic numerical control flame cutting machine of the method for improving the blanking precision of the steel tube arch rib shell section base metal steel plate in the invention is finished.
FIG. 4 is a schematic diagram of a single steel plate separated from an approach steel plate after cutting a reserved point manually by a cutting torch in the method for improving the flame cutting blanking precision of the steel pipe arch rib shell section base metal steel plate of the invention.
FIG. 5 is a cutting path diagram of a single plate and lofting according to the method for improving the accuracy of flame cutting and blanking of the base metal steel plate of the steel pipe arch rib shell section.
FIG. 6 is a front elevation view of a single plate for improving the accuracy of flame cutting blanking of a base metal steel plate of a steel pipe arch rib shell section according to the method of the invention.
FIG. 7 is a plan view of a final shell ring base metal steel plate after beveling and cutting are completed by the method for improving the flame cutting blanking precision of the steel pipe arch rib shell ring base metal steel plate.
FIG. 8 is a cross-sectional view of a final shell ring base metal steel plate after beveling and cutting in the method for improving the accuracy of flame cutting blanking of a steel pipe arch rib shell ring base metal steel plate of the invention.
In the figure: 1. entering a steel plate to be cut; 2. lofting lines on the steel plate; 3. the running track interval part is a non-cutting point reserved for a steel plate in the blanking of the full-automatic numerical control flame cutting machine; 4. flame cutting traces left on the running track after the blanking of the full-automatic numerical control flame cutting machine is finished; 5. manually cutting the reserved points by using a cutting torch and then separating a single whole plate from the entry steel plate; 6. the root of the reserved point remained after the cutting torch is manually cut; 7. cutting track of cutting nozzle of semi-automatic flame cutting machine; 8. and finally forming the shell ring base metal steel plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1-8, a method for improving the flame cutting blanking precision of a steel tube arch rib shell section base metal steel plate comprises the following specific steps:
the method comprises the following steps: selecting raw materials, determining the steps of a steel pipe arch rib shell section base material cutting and blanking method and corresponding raw material production equipment, and performing trial operation on the production equipment;
step two: setting out a steel plate, performing numerical control programming on the full-automatic numerical control flame cutting machine, programming a running track of a cutting nozzle in a computer, and debugging relevant parameters;
step three: before formal cutting, the cutting nozzle idles for one round according to numerical control programming to simulate a cutting running track;
step four: the full-automatic numerical control flame cutting machine starts formal cutting, and four points of a cylindrical shell section base metal steel plate are still uncut after the cutting is finished;
step five: manually cutting the reserved point by adopting a cutting torch, and completely cutting the reserved point during the groove cutting construction of the semi-automatic flame cutting machine.
Wherein; in the first step, the inspection personnel performs production license inspection on the raw materials and auxiliary materials, enterprises purchase the raw materials which need legal inspection at import, effective inspection qualification certificates are required to be requested from suppliers, the relevant certificates of the suppliers are inspected from qualified suppliers, and the relevant indexes of the raw materials can be put in storage after the relevant indexes are qualified by self-inspection.
Wherein; and step two, steel plate lofting, namely directly marking cutting lines of parts on the steel plate and reserving non-cutting points in key, wherein the lofting lines are disconnected at the reserved non-cutting points, in the step two, numerical control programming is performed, the running track of the cutting nozzle is compiled in a computer according to the design size of the cylinder section base metal steel plate, the non-cutting points are reserved during the numerical control programming, and flame cutting is stopped at the reserved points.
Wherein; and in the third step of simulating cutting, observing whether the idle running path of the cutting torch meets the requirement, and simultaneously paying attention to whether the cutting torch is stopped at a reserved point on the running path.
Wherein; in the fourth formal cutting step, the cutting nozzle performs flame cutting according to a programmed running track, two non-cutting points are reserved at the butt joint end of the longitudinal joint of two sides of each shell section base metal respectively, four points are reserved on a single whole plate, and the four points play a role in fixing the single whole plate and prevent the local temperature of the single whole plate from generating displacement due to cutting.
Wherein; in the fifth step, cutting reserved points by a cutting torch, cutting four points reserved for preventing movement in the cutting stage of the full-automatic numerical control flame cutting machine on the single whole plate by the cutting torch at the stage, obtaining the single whole plate after cutting, and leaving the roots of 4 reserved points at the longitudinal seam butt joint end of each whole plate.
Wherein; in the beveling construction in the step five, four reserved points on the whole plate are deliberately placed at the beveling construction part in the original arrangement, so that the residual roots and waste materials of the four reserved points can be cut off together by using a semi-automatic flame cutting machine in the beveling construction, and further the final shell ring base metal steel plate can be directly obtained.
Wherein; the size and the number of the reserved points can be set after comprehensive consideration is given to the plate thickness, the area of the whole cylindrical shell section base material plate and the resistance condition of a cutting platform, and the principle is that the whole cylindrical shell section base material plate can be temporarily connected and fixed by utilizing a cut-off part in the full-automatic numerical control flame cutting stage so that the whole cylindrical shell section base material plate is not moved due to local heating.
Wherein; the invention can be used only by utilizing the original equipment and base material in blanking and cutting of the steel plate without adding any additional material and auxiliary equipment.
Wherein; the invention can be completely embedded into the process of steel plate blanking cutting, can match the original blanking cutting process with high wedge fit, and can improve the blanking precision of steel plate flame cutting of the base metal of the steel tube arch rib shell section due to the embedding of the invention.
Example two
As shown in fig. 1-8, a method for improving the flame cutting blanking precision of a steel tube arch rib shell section base metal steel plate comprises the following specific steps:
the method comprises the following steps: selecting raw materials, determining the steps of a steel pipe arch rib shell section base material cutting and blanking method and corresponding raw material production equipment, and performing trial operation on the production equipment;
step two: lofting a steel plate, performing numerical control programming on the full-automatic numerical control flame cutting machine, programming a running track of a cutting nozzle in a PLC (programmable logic controller), and debugging relevant parameters;
step three: before formal cutting, the cutting nozzle idles for one round according to numerical control programming to simulate a cutting running track;
step four: the full-automatic numerical control flame cutting machine starts formal cutting, and four points of a cylindrical shell section base metal steel plate are still uncut after the cutting is finished;
step five: manually cutting the reserved point by adopting a cutting torch, and completely cutting the reserved point during the groove cutting construction of the semi-automatic flame cutting machine.
Wherein; in the step one, the inspection personnel performs production license inspection on the raw materials and auxiliary materials, enterprises purchase the raw materials which need legal inspection for import, effective inspection qualification certification needs to be requested from suppliers, the relevant certification authenticity of the suppliers is inspected from qualified suppliers, and the relevant indexes of the raw materials can be put in storage after the relevant indexes are qualified by self-inspection.
Wherein; and step two, steel plate lofting, namely directly marking cutting lines of parts on the steel plate and reserving non-cutting points in key, wherein the lofting lines are disconnected at the reserved non-cutting points, in the step two, numerical control programming is performed, the running track of the cutting nozzle is compiled in a computer according to the design size of the cylinder section base metal steel plate, the non-cutting points are reserved during the numerical control programming, and flame cutting is stopped at the reserved points.
Wherein; and in the third step of simulating cutting, observing whether the idle running path of the cutting torch meets the requirement, and simultaneously paying attention to whether the cutting torch is stopped at a reserved point on the running path.
Wherein; in the fourth formal cutting step, the cutting nozzle performs flame cutting according to a programmed running track, two non-cutting points are reserved at the butt joint end of the longitudinal joint of two sides of each shell section base metal respectively, four points are reserved on a single whole plate, and the four points play a role in fixing the single whole plate and prevent the local temperature of the single whole plate from generating displacement due to cutting.
Wherein; in the fifth step, cutting reserved points by a cutting torch, cutting four points reserved for preventing movement in the cutting stage of the full-automatic numerical control flame cutting machine on the single whole plate by the cutting torch at the stage, obtaining the single whole plate after cutting, and leaving the roots of 4 reserved points at the longitudinal seam butt joint end of each whole plate.
Wherein; in the beveling construction in the step five, four reserved points on the whole plate are deliberately placed at the beveling construction part in the original arrangement, so that the residual roots and waste materials of the four reserved points can be cut off together by using a semi-automatic flame cutting machine in the beveling construction, and further the final shell ring base metal steel plate can be directly obtained.
Wherein; the size and the number of the reserved points can be set after comprehensive consideration is given to the plate thickness, the area of the whole cylindrical shell section base material plate and the resistance condition of a cutting platform, and the principle is that the whole cylindrical shell section base material plate can be temporarily connected and fixed by utilizing a cut-off part in the full-automatic numerical control flame cutting stage so that the whole cylindrical shell section base material plate is not moved due to local heating.
Wherein; the invention can be used only by utilizing the original equipment and base material in blanking and cutting of the steel plate without adding any additional material and auxiliary equipment.
Wherein; the invention can be completely embedded into the process of steel plate blanking cutting, can match the original blanking cutting process with high wedge fit, and can improve the blanking precision of steel plate flame cutting of the base metal of the steel tube arch rib shell section due to the embedding of the invention.
When the invention works: firstly, after a steel plate enters a field, the steel plate is hoisted to an upper cutting platform for positioning, the rolling direction of steel for shell ring blanking is ensured to be consistent with the rolling direction of the shell ring, then cutting lines of parts are directly marked on the steel plate according to the design requirement shown in figure 2, non-cutting points are reserved in the key, and the lofting lines are disconnected at the reserved non-cutting points. And compiling the running track of the cutting nozzle in a computer according to the design size of the base material steel plate of the shell ring, reserving a non-cutting point during numerical control programming, and stopping flame cutting at the reserved point. Before formal cutting, the cutting nozzle is enabled to idle for one round according to numerical control programming, the running track of a cutting steel plate is simulated, whether the idle running path of the cutting nozzle meets the requirement is observed, whether the cutting nozzle pauses at a reserved point on the running path is also concerned, the programmed track and the idle running path of the cutting nozzle coincide with a lofting line in a graph 2, a non-cutting point is reserved at the discontinuous point of the lofting line, the cutting nozzle carries out flame cutting according to the programmed running track, two non-cutting points are reserved at the longitudinal seam butt joint end of two sides of each cylinder section base metal, four points are reserved in a single whole plate, the four points start to fix the single whole plate, the local temperature of the whole plate caused by cutting is not displaced, the details of the reserved point after the cutting is finished by a full-automatic numerical control flame cutting machine are shown in a graph 3, the point has no base metal cutting trace at the stage shown in the graph 3, the invention improves the blanking cutting precision of the steel pipe arch rib cylinder section steel plate, the invention has simple procedure, does not need to add any material and auxiliary equipment, and only utilizes the original equipment for blanking and cutting the steel plate and the parent metal to realize the use of the invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for improving flame cutting blanking precision of a steel pipe arch rib shell ring base metal steel plate is characterized by comprising the following steps:
the method comprises the following steps: selecting raw materials, determining the steps of a steel pipe arch rib shell section base material cutting and blanking method and corresponding raw material production equipment, and performing trial operation on the production equipment;
step two: setting out a steel plate, performing numerical control programming on the full-automatic numerical control flame cutting machine, programming a running track of a cutting nozzle in a computer, and debugging relevant parameters;
step three: before formal cutting, the cutting nozzle idles for one round according to numerical control programming to simulate a cutting running track;
step four: the full-automatic numerical control flame cutting machine starts formal cutting, and four points of a cylindrical shell section base metal steel plate are still uncut after the cutting is finished;
step five: manually cutting the reserved point by adopting a cutting torch, and completely cutting the reserved point during the groove cutting construction of the semi-automatic flame cutting machine.
2. The method for improving the accuracy of flame cutting and blanking of the steel tube arch rib shell section base metal steel plate as claimed in claim 1, wherein: in the first step, the inspection personnel performs production license inspection on the raw materials and auxiliary materials, enterprises purchase the raw materials which need legal inspection at import, effective inspection qualification certificates are required to be requested from suppliers, the relevant certificates of the suppliers are inspected from qualified suppliers, and the relevant indexes of the raw materials can be put in storage after the relevant indexes are qualified by self-inspection.
3. The method for improving the accuracy of the flame cutting blanking of the steel plate as the base material of the steel tube arch rib shell ring as set forth in claim 1, wherein the method comprises the following steps: and step two, steel plate lofting, namely directly marking cutting lines of parts on the steel plate and reserving non-cutting points in key, wherein the lofting lines are disconnected at the reserved non-cutting points, in the step two, numerical control programming is performed, the running track of the cutting nozzle is compiled in a computer according to the design size of the cylinder section base metal steel plate, the non-cutting points are reserved during the numerical control programming, and flame cutting is stopped at the reserved points.
4. The method for improving the accuracy of the flame cutting blanking of the steel plate as the base material of the steel tube arch rib shell ring as set forth in claim 1, wherein the method comprises the following steps: and in the third step of simulating cutting, observing whether the idle running path of the cutting torch meets the requirement, and simultaneously paying attention to whether the cutting torch is stopped at a reserved point on the running path.
5. The method for improving the accuracy of flame cutting and blanking of the steel tube arch rib shell section base metal steel plate as claimed in claim 1, wherein: in the fourth formal cutting step, the cutting nozzle performs flame cutting according to a programmed running track, two non-cutting points are reserved at the butt joint end of the longitudinal joint of two sides of each shell section base metal respectively, four points are reserved on a single whole plate, and the four points play a role in fixing the single whole plate and prevent the local temperature of the single whole plate from generating displacement due to cutting.
6. The method for improving the accuracy of flame cutting and blanking of the steel tube arch rib shell section base metal steel plate as claimed in claim 1, wherein: in the fifth step, cutting reserved points by a cutting torch, cutting four points reserved for preventing movement in the cutting stage of the full-automatic numerical control flame cutting machine on the single whole plate by the cutting torch at the stage, obtaining the single whole plate after cutting, and leaving the roots of 4 reserved points at the longitudinal seam butt joint end of each whole plate.
7. The method for improving the accuracy of flame cutting and blanking of the steel tube arch rib shell section base metal steel plate as claimed in claim 1, wherein: in the beveling construction in the step five, four reserved points on the whole plate are deliberately placed at the beveling construction part in the original arrangement, so that the residual roots and waste materials of the four reserved points can be cut off together by using a semi-automatic flame cutting machine in the beveling construction, and further the final shell ring base metal steel plate can be directly obtained.
8. The method for improving the accuracy of flame cutting and blanking of the steel tube arch rib shell section base metal steel plate as claimed in claim 1, wherein: the size and the number of the reserved points can be set after comprehensive consideration is given to the plate thickness, the area of the whole cylindrical shell section base material plate and the resistance condition of a cutting platform, and the principle is that the whole cylindrical shell section base material plate can be temporarily connected and fixed by utilizing a cut-off part in the full-automatic numerical control flame cutting stage so that the whole cylindrical shell section base material plate is not moved due to local heating.
9. The method for improving the accuracy of flame cutting and blanking of the steel tube arch rib shell section base metal steel plate as claimed in claim 1, wherein: the invention can be used only by utilizing the original equipment and base material in blanking and cutting of the steel plate without adding any additional material and auxiliary equipment.
10. The method for improving the accuracy of flame cutting and blanking of the steel tube arch rib shell section base metal steel plate as claimed in claim 1, wherein: the invention can be completely embedded into the process of steel plate blanking cutting, can match the original blanking cutting process with high wedge fit, and can improve the blanking precision of steel plate flame cutting of the base metal of the steel tube arch rib shell section due to the embedding of the invention.
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| CN117236660A (en) * | 2023-11-14 | 2023-12-15 | 宝信软件(南京)有限公司 | System and method for analyzing steel pipe batch cutting data |
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