CN113112593B - Application of 3D graph in numerical control system of bending machine - Google Patents
Application of 3D graph in numerical control system of bending machine Download PDFInfo
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- CN113112593B CN113112593B CN202110422573.3A CN202110422573A CN113112593B CN 113112593 B CN113112593 B CN 113112593B CN 202110422573 A CN202110422573 A CN 202110422573A CN 113112593 B CN113112593 B CN 113112593B
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- 238000005452 bending Methods 0.000 title claims abstract description 159
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000005457 optimization Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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Abstract
The invention belongs to the technical field of numerical control systems of bending machines, in particular to an application of a 3D graph on a numerical control system of a bending machine, which comprises the following steps: s1, acquiring 3D space data of an actual bending piece through 3D scanning equipment, importing bending simulation software, acquiring the 3D space data of the bending piece, and establishing a 3D model; s2, acquiring material performance data of the bending piece, importing the data into bending simulation software, and adjusting bending 3D graphic data; s3, acquiring weld track data of the bending piece in an actual product, importing the acquired weld track data into bending simulation software, and adjusting and processing the 3D graphic data again to obtain a simulation result; and S4, building bending sequence data, generating corresponding control instructions according to simulation results, sending the control instructions to a bending machine tool, and finishing bending and shaping of the bent piece by the bending machine tool. According to the invention, the 3D graph is used for assisting in bending and shaping processing by a bending machine tool, so that the purposes of improving bending precision and bending efficiency are achieved, and the product quality is ensured.
Description
Technical Field
The invention relates to the technical field of numerical control systems of bending machines, in particular to an application of a 3D graph on a numerical control system of a bending machine.
Background
The bending machine is a workpiece which is formed by bending a metal plate in a cold state into various geometric section shapes by using a die (a general or special die), a special numerical control system for the bending machine is generally adopted by the bending machine, the coordinate axis of the bending machine is developed from a single axis to 12 axes, and the numerical control system can automatically realize the control of the running depth of a sliding block, the left-right inclination adjustment of the sliding block, the front-back adjustment of a rear material stopper, the left-right adjustment, the pressure tonnage adjustment, the adjustment of the sliding block approaching working speed and the like. The bending machine can conveniently realize the actions of downward movement, inching, continuous movement, pressure maintaining, return stroke, midway stopping and the like of the sliding block, and the multi-elbow bending with the same angle or different angles can be completed by one-time feeding. The plate forming machine is a plate forming machine designed for cold-rolled sheet metal processing, and is widely applied to plate bending processing in the industries of automobile, airplane manufacturing, light industry, shipbuilding, container, elevator, railway vehicles and the like.
At present, the existing bending numerical control system generally and easily generates the problems of product scrapping and raw material waste in the bending process of the sheet metal product, can not conduct targeted optimization and interference according to the performance and the material connection mode of the material, has lower bending precision and bending efficiency, and can not meet the increasingly higher bending processing requirements.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides application of a 3D graph on a numerical control system of a bending machine, and solves the problems that the existing numerical control system for bending is generally easy to generate product scrapping and raw material waste in the bending process of a sheet metal product, can not be subjected to targeted optimization and interference according to the performance and the material connection mode of materials, has lower bending precision and bending efficiency, and can not meet the increasingly higher bending processing requirements.
And (II) technical scheme.
The invention adopts the following technical scheme for realizing the purposes:
An application of a 3D graph on a numerical control system of a bending machine, which comprises the following steps:
S1, acquiring 3D space data of an actual bending piece through 3D scanning equipment, importing bending simulation software, acquiring the 3D space data of the bending piece, and establishing a 3D model;
S2, acquiring material performance data of the bending piece, importing the data into bending simulation software, and adjusting bending 3D graphic data;
S3, acquiring weld track data of the bending piece in an actual product, importing the acquired weld track data into bending simulation software, and adjusting and processing the 3D graphic data again to obtain a simulation result;
And S4, building bending sequence data, generating corresponding control instructions according to simulation results, sending the control instructions to a bending machine tool, and finishing bending and shaping of the bent piece by the bending machine tool.
Further, in step S2, the material performance data of the bending member includes rebound of the bending member, that is, the material returns to the original shape after being stressed, the material rebound is compensated by adopting an excessive bending mode, bending simulation software is integrated with the CAM system, the CAM system is used for measuring the bending member, the measurement result is compared with target data, and the bending is adjusted by the bending simulation software.
Further, in the step S3, the method of acquiring the weld track data of the bending member in the actual product is to acquire the 3D space data of the actual bending member through the 3D scanning device and establish a 3D model, and calculate and acquire the weld track data of the product through TensorFlow algorithm according to the 3D model.
Further, in step S3, the 3D graphics data adjustment processing includes bending length compensation for the bending piece, and reserving a welding seam end of the bending piece so as to be welded with the workpiece to be butted.
Further, in step S4, the bending sequence data includes a size of the bending member, a bending value, a mold selection, and a position of the stop finger.
(III) beneficial effects
Compared with the prior art, the invention provides the application of the 3D graph on the numerical control system of the bending machine, which has the following beneficial effects:
according to the invention, 3D space data of the bending piece is obtained in a 3D scanning mode, so that a 3D model is established, targeted optimization and interference are respectively carried out according to the material performance of the bending piece and the welding seam track connection mode of an actual product, then the obtained simulation result and the established bending sequence data are sent to a machine tool, and the 3D graph is used for assisting in bending and shaping processing of the bending machine tool, so that the purposes of improving bending precision and bending efficiency are achieved, and the product quality is ensured.
Drawings
Fig. 1 is a schematic diagram of the steps of applying the 3D graph of the present invention to a numerical control system of a bending machine.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 1, an application of a 3D graphic in a numerical control system of a bending machine according to an embodiment of the present invention includes the following steps:
S1, acquiring 3D space data of an actual bending piece through 3D scanning equipment, importing bending simulation software, acquiring the 3D space data of the bending piece, and establishing a 3D model;
S2, acquiring material performance data of the bending piece, importing the data into bending simulation software, and adjusting bending 3D graphic data;
S3, acquiring weld track data of the bending piece in an actual product, importing the acquired weld track data into bending simulation software, and adjusting and processing the 3D graphic data again to obtain a simulation result;
And S4, building bending sequence data, generating corresponding control instructions according to simulation results, sending the control instructions to a bending machine tool, and finishing bending and shaping of the bent piece by the bending machine tool.
In some embodiments, in order to ensure bending accuracy, the required over-bending angle needs to be determined to resist springback, and material compensation factors can be considered in simulation, in step S2, the material performance data of the bending piece includes springback of the bending piece, that is, the material tends to return to the original shape after being stressed, for example, to obtain a 45 ° bending, in practical application, a slightly larger angle, such as 50 °, is required to compensate for material springback by adopting an excessive bending mode; in order to monitor bending dynamic data of a workpiece in real time in the bending process, bending simulation software is integrated with a CAM system, the CAM system is used for measuring a bending piece, a measurement result is compared with target data, bending is adjusted through the bending simulation software, and bending precision is guaranteed.
In some embodiments, in step S3, the method of acquiring the weld track data of the bending member in the actual product is to acquire the 3D space data of the actual bending member through a 3D scanning device and establish a 3D model, and calculate and acquire the weld track data of the product through TensorFlow algorithm according to the 3D model.
In some embodiments, in order to consider the weld between the bending piece and the workpiece to be butted, a weld end needs to be reserved to ensure that the connecting end is a normal weld, in step S3, the 3D graphic data adjustment processing includes bending length compensation on the bending piece, and the 3D graphic data needs to be adjusted again by reserving the weld end of the bending piece so as to be welded with the workpiece to be butted.
In some embodiments, in step S4, the bending sequence data includes the size of the bending piece, the bending value, the mold selection and the position of the blocking finger, and in operation, these data are sent to the machine tool, which can accept the bending sequence data only by having a USB driver, a serial data interface or a network interface, and the bending simulation software allows the immediate use of these data.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. An application of a 3D graph on a numerical control system of a bending machine, which comprises the following steps:
s1, acquiring 3D space data of an actual bending piece through 3D scanning equipment, importing bending simulation software, acquiring the 3D space data of the bending piece, and establishing a 3D model;
S2, acquiring material performance data of the bending piece, importing the data into bending simulation software, and adjusting bending 3D graphic data;
S3, acquiring weld track data of the bending piece in an actual product, importing the acquired weld track data into bending simulation software, and adjusting and processing the 3D graphic data again to obtain a simulation result;
S4, bending sequence data are established, corresponding control instructions are generated according to simulation results and sent to a bending machine tool, and bending and shaping of the bent piece are completed by the bending machine tool;
In the bending process, in order to ensure the bending precision, the required over-bending angle is required to be determined to resist rebound, material compensation factors are considered in simulation, in step S2, material performance data of the bending piece comprise rebound of the bending piece, namely the material is prone to recover to the original shape after being stressed, and the material rebound is compensated in an over-bending mode; in order to monitor bending dynamic data of a workpiece in real time in the bending process, bending simulation software is integrated with a CAM system, the CAM system is used for measuring a bending piece, a measurement result is compared with target data, bending is adjusted through the bending simulation software, and bending precision is ensured;
in step S3, the method for acquiring the weld track data of the bending piece in the actual product is to acquire 3D space data of the actual bending piece through 3D scanning equipment and establish a 3D model, and calculate and acquire the weld track data of the product through TensorFlow algorithm according to the 3D model;
In order to consider the welding seam between the bending piece and the butt-joint workpiece, a welding seam end is reserved to ensure the normal welding seam of the connecting end, in the step S3, the 3D graphic data adjustment processing comprises bending length compensation of the bending piece, welding with the workpiece to be butt-joint is conducted by reserving the welding seam end of the bending piece, and the 3D graphic data is adjusted again;
In step S4, the bending sequence data includes the size, bending value, mold selection and finger blocking position of the bending piece, and when in operation, the data are sent to the machine tool, and the machine tool can accept the bending sequence data only by having a USB driver, a serial data interface or a network interface, and the bending simulation software allows the data to be used immediately;
3D space data of the bending piece are acquired through a 3D scanning mode, a 3D model is built, targeted optimization and interference are respectively carried out according to material performance of the bending piece and a welding seam track connection mode of an actual product, then the acquired simulation result and the built bending sequence data are sent to a machine tool, a 3D graph is utilized to assist in bending and shaping of the bending machine tool, and therefore the purposes of improving bending precision and bending efficiency are achieved, and product quality is guaranteed.
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| JP2018069263A (en) * | 2016-10-26 | 2018-05-10 | 三菱重工船舶海洋株式会社 | Press working condition determination method |
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