CN110705122A - Method and device for automatically forming curved surface of sheet material and storage medium - Google Patents
Method and device for automatically forming curved surface of sheet material and storage medium Download PDFInfo
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- CN110705122A CN110705122A CN201910980247.7A CN201910980247A CN110705122A CN 110705122 A CN110705122 A CN 110705122A CN 201910980247 A CN201910980247 A CN 201910980247A CN 110705122 A CN110705122 A CN 110705122A
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Abstract
The invention discloses a method, a device and a storage medium for automatically forming a curved surface of a sheet material, wherein the method for automatically forming the curved surface of the sheet material is applied to multi-point forming equipment, the multi-point forming equipment comprises a basic body array for pressing the sheet material, and the method comprises the following steps: obtaining a curved surface model; calculating the distribution information of the basic body array according to the curved surface model; determining the height of each basic body in the basic body array according to the distribution information; judging whether the positioning of the plate to be processed is accurate or not; if yes, controlling the basic body array to move towards the direction of the plate material, and pressing the plate material; after pressing for a preset time, forming the plate, measuring the curved surface of the plate, and generating curved surface information of the plate; judging whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model; if yes, judging that the plate pressing is successful. Compared with the prior art, the scheme reduces the die sinking cost of the production die, thereby greatly reducing the production cost of the whole die.
Description
Technical Field
The invention relates to the field of mold processing, in particular to a method and a device for automatically forming a curved surface of a sheet material and a storage medium.
Background
The production and the living of people can not be separated from the die. Such as daily necessities like a water cup and a washbasin, or metal parts on a high-speed rail and an airplane are all formed by pressing plate materials (such as stainless steel plates) through a die. In the traditional production technology, the price of opening one set of mould is not good, and different integral moulds are needed for manufacturing different products, so the production mode has high cost. Therefore, it is very important to reduce the production cost of the integral mold in the conventional technology.
Disclosure of Invention
The invention mainly aims to provide a method for automatically forming a curved surface of a sheet material, and aims to solve the technical problem of reducing the production cost of an integral die in the prior art.
The invention provides a method for automatically forming a curved surface of a sheet material, which is applied to multi-point forming equipment, wherein the multi-point forming equipment comprises a basic body array for pressing the sheet material, and the method comprises the following steps:
obtaining a curved surface model;
calculating the distribution information of the basic body array according to the curved surface model;
determining the height of each basic body in the basic body array according to the distribution information;
judging whether the positioning of the plate to be processed is accurate or not;
if yes, controlling the basic body array to move towards the direction of the plate material, and pressing the plate material;
after pressing for a preset time, forming the plate, measuring the curved surface of the plate, and generating curved surface information of the plate;
judging whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model;
if yes, judging that the plate pressing is successful.
Preferably, after the step of determining whether the curved surface information of the pressed area of the sheet material is consistent with the curved surface information of the curved surface model, the method includes:
if not, calculating the error between the curved surface information of the plate material pressed area and the curved surface information of the curved surface model, and generating new basic body array distribution information;
and returning to the step of determining the height of each basic body in the basic body array according to the distribution information until the plate pressing is judged to be successful.
Preferably, the basic body array includes an upper basic body array and a lower basic body array, and the step of calculating the distribution information of the basic body array according to the curved surface model includes:
judging whether the pressing mode of the plate is multipoint stretch according to the longitudinal section of the curved surface model;
if so, calculating the distribution information of the basic body array according to the curved surface model to generate the distribution information of the basic body array, or calculating the basic information of the lower basic body array to generate the distribution information of the basic body array.
Preferably, after the step of judging whether the pressing mode of the sheet is the multi-point stretch forming according to the longitudinal section of the curved surface model, the method includes:
if not, judging that the pressing mode of the plate is multi-point opposite pressing forming;
and calculating the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model, and generating the distribution information of the basic body array.
The invention also provides a device for automatically forming the curved surface of the sheet material, which comprises:
the acquisition module is used for acquiring a curved surface model;
the first execution module is used for calculating the distribution information of the basic body array according to the curved surface model;
the second execution module is used for determining the height of each basic body in the basic body array according to the distribution information;
the first judgment module is used for judging whether the positioning of the plate to be processed is accurate or not;
the third execution module is used for controlling the basic body array to move towards the direction of the plate material if the basic body array moves towards the direction of the plate material, and pressing the plate material;
the fourth execution module is used for pressing the sheet material to be formed after preset time, measuring the curved surface of the sheet material and generating curved surface information of the sheet material;
the second judging module is used for judging whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model;
and the fifth execution module is used for judging that the plate pressing is successful if the plate pressing is successful.
Preferably, the device for automatically forming the curved surface of the sheet material further comprises:
the sixth execution module is used for calculating the error between the curved surface information of the plate material pressed area and the curved surface information of the curved surface model if the plate material pressed area is not the curved surface model, and generating new basic body array distribution information;
and the seventh execution module is used for returning to execute the step of determining the height of each basic body in the basic body array according to the distribution information until the plate pressing is judged to be successful.
Preferably, the first executing module includes:
the judging submodule is used for judging whether the pressing mode of the plate is multipoint stretch according to the longitudinal section of the curved surface model;
and the first execution submodule is used for calculating the distribution information of the basic body array according to the curved surface model if the curved surface model is true, generating the distribution information of the basic body array, or calculating the basic information of the lower basic body array and generating the distribution information of the basic body array.
Preferably, the first execution module further includes:
the second execution submodule is used for judging that the pressing mode of the plate is multi-point opposite pressing forming if the pressing mode of the plate is not the multi-point opposite pressing forming mode;
and the third execution submodule is used for calculating the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model and generating the distribution information of the basic body array.
The invention also provides a storage medium which is readable by a computer and on which a computer program is stored, wherein the computer program is executed to implement the method for automatically forming the curved surface of the sheet material.
The invention has the beneficial effects that: through this technical scheme, when producing different products, only need acquire the curved surface model of different products, generate corresponding basic body array (producing the mould promptly) according to the curved surface model, the purpose is that one set of basic body array just can generate different production moulds, has reduced the die sinking cost of production mould to greatly reduced the manufacturing cost of whole mould. In addition, the multipoint forming equipment judges whether the curved surface information of the pressed area of the plate is consistent with the curved surface information of the curved surface model or not, and the processing precision of the product is greatly improved.
Drawings
FIG. 1 is a schematic flow chart of a method for automatically forming a curved surface of a sheet material according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for automatically forming a curved surface of a sheet material according to a second embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a method for automatically forming a curved surface of a sheet material according to a third embodiment of the present invention;
FIG. 4 is a schematic view of a multi-point stretch forming process of the automatic forming method for a curved surface of a sheet material according to the present invention;
FIG. 5 is a schematic view of a multi-point press forming process of the automatic sheet curved surface forming method of the present invention;
FIG. 6 is a schematic structural diagram of an apparatus for automatically forming a curved surface of a sheet material according to a first embodiment of the present invention;
fig. 7 is a block diagram of an embodiment of a storage medium provided in the present application.
Description of reference numerals:
1. an acquisition module; 2. a first execution module; 3. a second execution module; 4. a first judgment module; 5. a third execution module; 6. a fourth execution module; 7. a second judgment module; 8. a fifth execution module;
100. a storage medium; 200. a computer program.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a method for automatically forming a curved surface of a sheet material, the method being applied to a multi-point forming apparatus, the multi-point forming apparatus including a basic body array for pressing the sheet material, including:
s1: obtaining a curved surface model;
s2: calculating the distribution information of the basic body array according to the curved surface model;
s3: determining the height of each basic body in the basic body array according to the distribution information;
s4: judging whether the positioning of the plate to be processed is accurate or not;
s5: if yes, controlling the basic body array to move towards the direction of the plate material, and pressing the plate material;
s6: after pressing for a preset time, forming the plate, measuring the curved surface of the plate, and generating curved surface information of the plate;
s7: judging whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model;
s8: if yes, judging that the plate pressing is successful.
In the embodiment of the invention, the multi-point forming equipment comprises a multi-point forming host, a control computer and a control system which is arranged in the control computer. The control system includes CAD/CAE/CAM software for surface modeling. The multi-point forming main machine comprises an integral mould, and in the equipment, the integral mould is dispersed into regularly arranged basic bodies, namely basic body arrays. The production personnel control the basic bodies through the control computer, and the discrete basic body arrays form the adjustable multi-point die, so that different products can be produced by pressing the plate materials. Specifically, take the example of generating a figure of Buddha face. The manufacturer builds or obtains a model, i.e., a surface model (face model in the embodiment of the present invention), of the product to be produced by controlling the computer. The control system acquires the curved surface information of the curved surface model, and calculates the distribution information of the basic body array, namely the bending positions and the bending angles of the forehead, the cheek, the chin, the eyebrow, the eye, the nose, the ear and the mouth of the human face, so as to generate the distribution information of the basic body array, wherein the distribution information of the basic body array is a numerical control code. And the control system determines the height of each basic body in the basic body array according to the array distribution information of the basic bodies. The multi-point forming host machine judges whether the positioning of the plate material (such as a stainless steel plate) to be processed is accurate through the optical sensor, namely whether the plate material to be processed is positioned in a processing area. And if the plate to be processed is in the processing area, the control system controls the basic body array on the multi-point forming host machine to move towards the plate direction, and the flat plate is pressed. After a preset time (such as 5 minutes), the sheet is formed, the multipoint forming host machine is provided with a photoelectric measuring system, and the processed sheet surface information, namely the curved surface information, is obtained in a non-contact measuring mode. And the control system judges whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model. If the two types of the figure Buddha figure faces are consistent, the control system judges that the plates are pressed successfully, and the figure Buddha figure faces are produced successfully. Through the operation, when producing different products, only need acquire the curved surface model of different products, generate corresponding basic body array (producing the mould promptly) according to the curved surface model, the purpose is that one set of basic body array just can generate different production moulds, has reduced the die sinking cost of production mould to greatly reduced the manufacturing cost of whole mould. In addition, the multipoint forming equipment judges whether the curved surface information of the pressed area of the plate is consistent with the curved surface information of the curved surface model or not, and the processing precision of the product is greatly improved. In addition, the method realizes multiple purposes of one machine, does not need to store a plurality of integral dies when producing different products, and saves the die storage space; the design and the molding digitization are realized, and the manufacturing problem that the three-dimensional part is difficult to digitize is solved; when different products are produced, the die is quickly formed, so that the die opening time is saved, and the production efficiency is improved.
Referring to fig. 2, after step S7 of determining whether the curved surface information of the pressed area of the sheet material is consistent with the curved surface information of the curved surface model, the method includes:
s9: if not, calculating the error between the curved surface information of the plate material pressed area and the curved surface information of the curved surface model, and generating new basic body array distribution information;
s10: and returning to the step of determining the height of each basic body in the basic body array according to the distribution information until the plate pressing is judged to be successful.
In the embodiment of the invention, taking the figure of Buddha as an example, the multipoint forming device judges that the curved surface information of the pressed area of the plate material is inconsistent with the curved surface information of the curved surface model, namely the facial surface information of the five sense organs and the face on the plate material is inconsistent with the curved surface information of the curved surface model, and the control system calculates the error between the curved surface information of the pressed area of the plate material and the curved surface information of the curved surface model to generate new basic body array distribution information, thereby adjusting the height of each basic body in the basic body array. And repeating the steps until the control system judges that the plate pressing is successful. Through the arrangement, the die is flexibly adjusted according to the error, and the plate is repressed, so that the plate shape is consistent with the curved surface shape, and the precision of the produced product is greatly improved.
Referring to fig. 3 and 4, the basic body array includes an upper basic body array and a lower basic body array, and the step S2 of calculating distribution information of the basic body array based on the curved surface model includes:
s21: judging whether the pressing mode of the plate is multipoint stretch according to the longitudinal section of the curved surface model;
s22: if so, calculating the distribution information of the basic body array according to the curved surface model to generate the distribution information of the basic body array, or calculating the basic information of the lower basic body array to generate the distribution information of the basic body array.
In the embodiment of the invention, the pressing mode of the multi-point forming equipment to the plate comprises multi-point drawing and multi-point opposite pressing, wherein the multi-point drawing is to place the flat plate on the upper basic array or the lower basic array, the multi-point forming equipment applies pulling force to two sides of the plate, and the flat plate forms a curved surface under the combined action of the pulling force and the basic array to the plate pressure. The control system analyzes whether the number of the bending parts of the longitudinal section of the curved surface model is more than a preset value (such as 3) according to the longitudinal section of the curved surface model. If the number of the bending parts of the longitudinal section of the curved surface model is less than 3, the curved surface model is a simple graph, and the plate can be processed only by the upper basic body array or the lower basic body array according to the curved surface model. Taking the steel plate crankle in fig. 4 as an example, it is used in construction engineering. The number of the longitudinal section bending parts of the steel plate crankle piece is only 1, which indicates that the curved surface model is a simple figure and only needs to simply bend a flat plate. The multipoint forming equipment applies pulling force to two sides of the plate material, and the plate material is flattened to form a curved surface under the combined action of the pulling force and the pressure of the basic body array on the plate material. Through the arrangement, the multipoint forming equipment automatically generates the pressing mode of the plate according to the curved surface modeling.
Referring to fig. 3 and 5, after the step S21 of determining whether the pressing mode of the sheet is the multi-point drawing according to the longitudinal section of the curved surface model, the method includes:
S2A: if not, judging that the pressing mode of the plate is multi-point opposite pressing forming;
S2B: and calculating the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model, and generating the distribution information of the basic body array.
In the embodiment of the invention, if the control system judges that the pressing mode of the plate is not multi-point stretching, the pressing mode of the plate is multi-point opposite pressing. Specifically, the control system judges whether the number of the bending parts of the longitudinal section of the curved surface model is greater than a preset value (such as 3) or not according to the longitudinal section of the curved surface model, and if the number of the bending parts of the longitudinal section of the curved surface model is greater than the preset value (such as the figure of Buddha face longitudinal section), the curved surface model is judged to be a complex figure, namely the figure of Buddha face is the complex figure, and the upper basic body array and the lower basic body array are required to be matched and pressed together. Therefore, the control system calculates the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model, and generates the distribution information of the basic body array so as to realize the processing of the complex curved surface modeling.
The invention also provides a device for automatically forming the curved surface of the sheet material, which comprises:
the acquisition module 1 is used for acquiring a curved surface model;
the first execution module 2 is used for calculating the distribution information of the basic body array according to the curved surface model;
the second execution module 3 is used for determining the height of each basic body in the basic body array according to the distribution information;
the first judging module 4 is used for judging whether the positioning of the plate to be processed is accurate or not;
the third execution module 5 is used for controlling the basic body array to move towards the direction of the plate material if the basic body array moves towards the direction of the plate material, and pressing the plate material;
the fourth execution module 6 is used for pressing the sheet material to be formed after preset time, measuring the curved surface of the sheet material and generating curved surface information of the sheet material;
the second judging module 7 is used for judging whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model;
and the fifth execution module 8 is used for judging that the plate pressing is successful if the plate pressing is successful.
In the embodiment of the invention, the multi-point forming equipment comprises a multi-point forming host, a control computer and a control system which is arranged in the control computer. The control system includes CAD/CAE/CAM software for surface modeling. The multi-point forming main machine comprises an integral mould, and in the equipment, the integral mould is dispersed into regularly arranged basic bodies, namely basic body arrays. The production personnel control the basic bodies through the control computer, and the discrete basic body arrays form the adjustable multi-point die, so that different products can be produced by pressing the plate materials. Specifically, take the example of generating a figure of Buddha face. The manufacturer builds or obtains a model, i.e., a surface model (face model in the embodiment of the present invention), of the product to be produced by controlling the computer. The control system acquires the curved surface information of the curved surface model, and calculates the distribution information of the basic body array, namely the bending positions and the bending angles of the forehead, the cheek, the chin, the eyebrow, the eye, the nose, the ear and the mouth of the human face, so as to generate the distribution information of the basic body array, wherein the distribution information of the basic body array is a numerical control code. And the control system determines the height of each basic body in the basic body array according to the array distribution information of the basic bodies. The multi-point forming host machine judges whether the positioning of the plate material (such as a stainless steel plate) to be processed is accurate through the optical sensor, namely whether the plate material to be processed is positioned in a processing area. And if the plate to be processed is in the processing area, the control system controls the basic body array on the multi-point forming host machine to move towards the plate direction, and the flat plate is pressed. After a preset time (such as 5 minutes), the sheet is formed, the multipoint forming host machine is provided with a photoelectric measuring system, and the processed sheet surface information, namely the curved surface information, is obtained in a non-contact measuring mode. And the control system judges whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model. If the two types of the figure Buddha figure faces are consistent, the control system judges that the plates are pressed successfully, and the figure Buddha figure faces are produced successfully. Through the operation, when producing different products, only need acquire the curved surface model of different products, generate corresponding basic body array (producing the mould promptly) according to the curved surface model, the purpose is that one set of basic body array just can generate different production moulds, has reduced the die sinking cost of production mould to greatly reduced the manufacturing cost of whole mould. In addition, the multipoint forming equipment judges whether the curved surface information of the pressed area of the plate is consistent with the curved surface information of the curved surface model or not, and the processing precision of the product is greatly improved. In addition, the method realizes multiple purposes of one machine, does not need to store a plurality of integral dies when producing different products, and saves the die storage space; the design and the molding digitization are realized, and the manufacturing problem that the three-dimensional part is difficult to digitize is solved; when different products are produced, the die is quickly formed, so that the die opening time is saved, and the production efficiency is improved.
Further, the automatic forming device of sheet material curved surface still includes:
the sixth execution module is used for calculating the error between the curved surface information of the plate material pressed area and the curved surface information of the curved surface model if the plate material pressed area is not the curved surface model, and generating new basic body array distribution information;
and the seventh execution module is used for returning to execute the step of determining the height of each basic body in the basic body array according to the distribution information until the plate pressing is judged to be successful.
In the embodiment of the invention, taking the figure of Buddha as an example, the multipoint forming device judges that the curved surface information of the pressed area of the plate material is inconsistent with the curved surface information of the curved surface model, namely the facial surface information of the five sense organs and the face on the plate material is inconsistent with the curved surface information of the curved surface model, and the control system calculates the error between the curved surface information of the pressed area of the plate material and the curved surface information of the curved surface model to generate new basic body array distribution information, thereby adjusting the height of each basic body in the basic body array. And repeating the steps until the control system judges that the plate pressing is successful. Through the arrangement, the die is flexibly adjusted according to the error, and the plate is repressed, so that the plate shape is consistent with the curved surface shape, and the precision of the produced product is greatly improved.
Further, the first execution module 2 includes:
the judging submodule is used for judging whether the pressing mode of the plate is multipoint stretch according to the longitudinal section of the curved surface model;
and the first execution submodule is used for calculating the distribution information of the basic body array according to the curved surface model if the curved surface model is true, generating the distribution information of the basic body array, or calculating the basic information of the lower basic body array and generating the distribution information of the basic body array.
In the embodiment of the invention, the pressing mode of the multi-point forming equipment to the plate comprises multi-point drawing and multi-point opposite pressing, wherein the multi-point drawing is to place the flat plate on the upper basic array or the lower basic array, the multi-point forming equipment applies pulling force to two sides of the plate, and the flat plate forms a curved surface under the combined action of the pulling force and the basic array to the plate pressure. The control system analyzes whether the number of the bending parts of the longitudinal section of the curved surface model is more than a preset value (such as 3) according to the longitudinal section of the curved surface model. If the number of the bending parts of the longitudinal section of the curved surface model is less than 3, the curved surface model is a simple graph, and the plate can be processed only by the upper basic body array or the lower basic body array according to the curved surface model. Taking the steel plate crankle in fig. 4 as an example, it is used in construction engineering. The number of the longitudinal section bending parts of the steel plate crankle piece is only 1, which indicates that the curved surface model is a simple figure and only needs to simply bend a flat plate. The multipoint forming equipment applies pulling force to two sides of the plate material, and the plate material is flattened to form a curved surface under the combined action of the pulling force and the pressure of the basic body array on the plate material. Through the arrangement, the multipoint forming equipment automatically generates the pressing mode of the plate according to the curved surface modeling.
Further, the first execution module 2 further includes:
the second execution submodule is used for judging that the pressing mode of the plate is multi-point opposite pressing forming if the pressing mode of the plate is not the multi-point opposite pressing forming mode;
and the third execution submodule is used for calculating the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model and generating the distribution information of the basic body array.
In the embodiment of the invention, if the control system judges that the pressing mode of the plate is not multi-point stretching, the pressing mode of the plate is multi-point opposite pressing. Specifically, the control system judges whether the number of the bending parts of the longitudinal section of the curved surface model is greater than a preset value (such as 3) or not according to the longitudinal section of the curved surface model, and if the number of the bending parts of the longitudinal section of the curved surface model is greater than the preset value (such as the figure of Buddha face longitudinal section), the curved surface model is judged to be a complex figure, namely the figure of Buddha face is the complex figure, and the upper basic body array and the lower basic body array are required to be matched and pressed together. Therefore, the control system calculates the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model, and generates the distribution information of the basic body array so as to realize the processing of the complex curved surface modeling.
Referring to fig. 7, the present application further provides a storage medium 100, in which a computer program 200 is stored, and when the computer program is run on a computer, the computer is enabled to execute the method for automatically forming a curved surface of a sheet material described in the above embodiment.
Those skilled in the art will appreciate that the method of the present invention and the apparatus referred to above for performing one or more of the methods described herein may be used to automatically form a sheet material curved surface. These devices may be specially designed and manufactured for the required purposes, or they may comprise known devices in general-purpose computers. These devices have stored therein computer programs or applications that are selectively activated or reconfigured. Such a computer program may be stored in a device (e.g., computer) readable medium, including, but not limited to, any type of disk including floppy disks, hard disks, optical disks, CD-ROMs, and magnetic-optical disks, ROMs (Read-Only memories), RAMs (Random Access memories), EPROMs (Erasable Programmable Read-Only memories), EEPROMs (Electrically Erasable Programmable Read-Only memories), flash memories, magnetic cards, or optical cards, or any type of media suitable for storing electronic instructions, and each coupled to a bus. That is, a readable medium includes any medium that stores or transmits information in a form readable by a device (e.g., a computer).
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for automatically forming a curved surface of a sheet material is applied to a multi-point forming device, the multi-point forming device comprises a basic body array for pressing the sheet material, and the method comprises the following steps:
obtaining a curved surface model;
calculating the distribution information of the basic body array according to the curved surface model;
determining the height of each basic body in the basic body array according to the distribution information;
judging whether the positioning of the plate to be processed is accurate or not;
if yes, controlling the basic body array to move towards the direction of the plate material, and pressing the plate material;
after pressing for a preset time, forming the plate, measuring the curved surface of the plate, and generating curved surface information of the plate;
judging whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model;
and if so, judging that the plate is pressed successfully.
2. The method for automatically forming a sheet curved surface according to claim 1, wherein said step of judging whether the curved surface information of said sheet pressed area is consistent with the curved surface information of said curved surface model comprises the steps of:
if not, calculating the error between the curved surface information of the plate material pressed area and the curved surface information of the curved surface model, and generating new basic body array distribution information;
and returning to the step of determining the height of each basic body in the basic body array according to the distribution information until the plate pressing is judged to be successful.
3. The method of automatically forming a curved sheet surface according to claim 1, wherein said array of basic bodies comprises an upper array of basic bodies and a lower array of basic bodies, and said step of calculating distribution information of said array of basic bodies according to said curved surface model comprises:
judging whether the pressing mode of the plate is multipoint stretch according to the longitudinal section of the curved surface model;
if yes, calculating the distribution information of the upper basic body array according to the curved surface model to generate the distribution information of the basic body array, or calculating the basic information of the lower basic body array to generate the distribution information of the basic body array.
4. The method according to claim 3, wherein said step of determining whether said sheet pressing mode is multi-point drawing or not according to said longitudinal section of said curved surface model comprises:
if not, judging that the pressing mode of the plate is multi-point opposite pressing forming;
and calculating the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model to generate the distribution information of the basic body array.
5. The utility model provides a device of sheet material curved surface automatic molding which characterized in that includes:
the acquisition module is used for acquiring a curved surface model;
the first execution module is used for calculating the distribution information of the basic body array according to the curved surface model;
the second execution module is used for determining the height of each basic body in the basic body array according to the distribution information;
the first judgment module is used for judging whether the positioning of the plate to be processed is accurate or not;
the third execution module is used for controlling the basic body array to move towards the direction of the plate material if the basic body array moves towards the direction of the plate material, and pressing the plate material;
the fourth execution module is used for pressing the sheet material to be formed after preset time, measuring the curved surface of the sheet material and generating curved surface information of the sheet material;
the second judgment module is used for judging whether the curved surface information of the pressed area of the plate material is consistent with the curved surface information of the curved surface model or not according to the curved surface information of the curved surface model;
and the fifth execution module is used for judging that the plate pressing is successful if the plate pressing is successful.
6. The apparatus of claim 5, further comprising:
a sixth execution module, configured to calculate an error between curved surface information of the pressed area of the sheet and curved surface information of the curved surface model if the pressed area of the sheet is not the curved surface model, and generate new basic body array distribution information;
and the seventh execution module is used for returning to execute the step of determining the height of each basic body in the basic body array according to the distribution information until the plate pressing is judged to be successful.
7. The apparatus for automatically forming a sheet material curved surface according to claim 5, wherein the first execution module comprises:
the judging submodule is used for judging whether the pressing mode of the plate is multipoint stretch forming or not according to the longitudinal section of the curved surface model;
and the first execution submodule is used for calculating the distribution information of the upper basic body array to generate the distribution information of the basic body array or calculating the basic information of the lower basic body array to generate the distribution information of the basic body array according to the curved surface model if the curved surface model exists.
8. The apparatus of claim 7, wherein the first execution module further comprises:
the second execution submodule is used for judging that the pressing mode of the plate is multi-point opposite pressing forming if the pressing mode of the plate is not the multi-point opposite pressing forming;
and the third execution submodule is used for calculating the distribution information of the upper basic body array and the distribution information of the lower basic body array according to the curved surface model and generating the distribution information of the basic body array.
9. A storage medium, characterized in that it is a computer-readable storage medium, on which a computer program is stored, which when executed, implements the method of automatic slab curve forming according to any one of claims 1 to 4.
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| CN111497273A (en) * | 2020-04-23 | 2020-08-07 | 华中科技大学 | Deformable die platform for forming curved surface part and application thereof |
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