CN110814125B - Bending method of numerical control bending machine - Google Patents
Bending method of numerical control bending machine Download PDFInfo
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- CN110814125B CN110814125B CN201911023988.2A CN201911023988A CN110814125B CN 110814125 B CN110814125 B CN 110814125B CN 201911023988 A CN201911023988 A CN 201911023988A CN 110814125 B CN110814125 B CN 110814125B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/22—Auxiliary equipment, e.g. positioning devices
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a bending method of a numerical control bending machine, which comprises the following steps: drawing a development drawing of the workpiece on a computer by a craftsman; marking data on a drawing, wherein the data comprises two parts, namely data for reference of a bending operator and data with a specific format for reading by a numerical control system; transmitting the picture file to a numerical control system of a bending machine, reading data and converting the data into an execution step of the numerical control system; and starting the bending machine to bend. According to the bending method of the numerical control bending machine, a craftsman directly marks process data on a drawing, one part of the data is referred to when the operator bends, the other part of the process data of the bending step has a specific format and can be recognized and read by the numerical control system of the bending machine and converted into the execution step of the numerical control system, the operator does not need to manually input the process data and use off-line programming software, the process flow is simplified, the operation is simple, and the production efficiency is improved.
Description
Technical Field
The invention relates to the field of bending processing, in particular to a bending method of a numerical control bending machine.
Background
The following two bending process routes exist in the field of numerical control bending machines in the current market:
(1) the off-line programming software and the bending machine numerical control system matched with the off-line programming software are adopted, and the off-line programming software has complete functions and is beneficial to the management of drawings and machining processes of bent workpieces in factories. However, most of the numerical control bending machines on the market are not provided with the off-line programming software and the bending machine numerical control system matched with the off-line programming software, because the off-line programming software and the bending machine numerical control system matched with the off-line programming software are high in purchase cost, the off-line programming software needs to be used by skilled high-level process technicians, and the operation is relatively complex.
(2) Because most numerical control bending machines are not matched with off-line programming software, an operator needs to manually input process step process data on the field of the bending machines one by one, and a manual input mode is adopted, so that for complex workpieces, data are easily mistakenly input manually, and the input efficiency is low; secondly, different numerical control bending machines need to input process data repeatedly and manually; and thirdly, the process personnel are required to additionally provide two-dimensional drawings and process description files for the operation personnel, so that the management difficulty is increased.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a bending method of a numerical control bending machine, which can simplify the process flow, is simple to operate and improves the production efficiency.
According to an embodiment of the invention, a bending method of a numerical control bending machine is provided, which comprises the following steps:
a. drawing a development drawing of the workpiece on a computer by a craftsman;
b. marking data on a drawing, wherein the data comprises two parts, namely data for reference of an operator for bending and data with a specific format for reading of a numerical control system, wherein the data for reference of the operator comprises a process step and a corresponding stopping edge, and the data for reading of the numerical control system comprises a plurality of bending process step process data;
c. transmitting the drawing file to a numerical control system of a bending machine, reading bending process step process data with a specific format by the numerical control system, and converting the process data into self execution steps;
d. and starting the bending machine to bend, controlling the bending machine to execute according to the working steps by the numerical control system, placing the workpiece by an operator according to a drawing after the motion control of each shaft is in place, and controlling the bending machine to bend the workpiece according to the working steps.
Has the advantages that: according to the bending method of the numerical control bending machine, a craftsman directly marks process data on a drawing, wherein one part of the data is used for reference when the craftsman bends, the craftsman puts corresponding stop edges on a workpiece according to the process steps, and the other part of the process data of the bending process steps has a specific format and can be recognized and read by the numerical control system of the bending machine and converted into the execution steps of the numerical control system.
According to the bending method of the numerical control bending machine, the drawing file adopts a dxf format. The dxf file is in a file format used for CAD data exchange between AutoCAD and other software, stores graphic information in an ASCII text format, and the numerical control system can read the text information in the dxf file.
According to the bending method of the numerical control bending machine provided by the embodiment of the invention, the bending process step process data of each process step are marked in the same text, and the format of the bending process step process data is as follows: the method comprises the following steps of working procedure, bending angle, upper die number, lower die number, X-axis coordinate of a rear material stop, R-axis coordinate of the rear material stop, Z1-axis coordinate of the rear material stop and Z2-axis coordinate of the rear material stop. The bending process comprises a plurality of working steps, and the numerical control system controls the bending machine to execute corresponding technological parameters according to the working steps, wherein the corresponding technological parameters comprise bending angles, used upper dies and lower dies, coordinates of rear material blocking for positioning and the like. And marking the process parameters of each step in the same text on the drawing so that the numerical control system can identify the text information in the specific format.
According to the bending method of the numerical control bending machine, a numerical control system reads the bending step process data, and the text is the bending step process data of one step by identifying the text containing 8 data and separating the two data through commas.
According to the bending method of the numerical control bending machine, in the step b, data for operators to bend are marked, an arrow is used for indicating a stopping edge, and the following data format is adopted: step one, T. And placing the workpiece according to the data by an operator.
According to the bending method of the numerical control bending machine, in the step b, data are marked on a drawing, and the data for operators to refer to also comprise bending tolerance data. The bending angle and length need to meet the bending tolerance so as to ensure the bending precision.
According to the bending method of the numerical control bending machine, in the step d, a sample is firstly processed, after the actual angle and length data of the bent sample are detected, the angle and length errors are input into the compensation data columns of each working step of the bending machine, then a workpiece is processed, and if the actual angle and length data of the workpiece meet the bending tolerance requirements, the workpiece can be bent in batches. The bending machining precision is ensured by pre-machining the sample piece and inputting the compensation data.
According to the bending method of the numerical control bending machine, in the step c, the drawing file is transmitted to the numerical control system by the computer, and the transmission mode comprises USB flash disk copying, wireless transmission and wired transmission.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic illustration of a drawing callout according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a workpiece to be bent according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The bending method of the numerical control bending machine provided by the embodiment of the invention comprises the following steps:
a. drawing a development drawing of the workpiece on a computer by a craftsman;
b. marking data on a drawing, wherein the data comprises two parts, namely data for reference of an operator for bending and data with a specific format for reading of a numerical control system, wherein the data for reference of the operator comprises a process step and a corresponding stopping edge, and the data for reading of the numerical control system comprises a plurality of bending process step process data;
c. transmitting the drawing file to a numerical control system of a bending machine, reading bending process step process data with a specific format by the numerical control system, and converting the process data into self execution steps;
d. and starting the bending machine to bend, controlling the bending machine to execute according to the working steps by the numerical control system, placing the workpiece by an operator according to a drawing after the motion control of each shaft is in place, and controlling the bending machine to bend the workpiece according to the working steps.
According to the bending method of the numerical control bending machine, a craftsman directly marks process data on a drawing, wherein one part of the data is used for reference when the craftsman bends, the craftsman puts corresponding stop edges on a workpiece according to the process steps, and the other part of the process data of the bending process steps has a specific format and can be recognized and read by the numerical control system of the bending machine and converted into the execution steps of the numerical control system. And the drawing file can be directly sent to the numerical control system of the on-site bending machine by the computer of the process department, so that the control of the bending drawing process data between the process personnel and the operating personnel is facilitated, and the paperless electronic document management of the process data of the factory bending workpieces is realized.
In the present embodiment, the drawing file adopts a dxf format. The dxf file is in a file format used for CAD data exchange between AutoCAD and other software, stores graphic information in an ASCII text format, and the numerical control system can read the text information in the dxf file. It will be appreciated that the drawing files may also take on other file formats that may be used for data exchange.
When marking data, it should be noted that, the bending process step process data of each process step is marked in the same text (in the same text box of the CAD drawing), the corresponding bending edge can be indicated by an arrow, and the format of the bending process step process data is as follows: the method comprises the following steps of working procedure, bending angle, upper die number, lower die number, X-axis coordinate of a rear material stop, R-axis coordinate of the rear material stop, Z1-axis coordinate of the rear material stop and Z2-axis coordinate of the rear material stop. The bending process comprises a plurality of working steps, and the numerical control system controls the bending machine to execute corresponding technological parameters according to the working steps, wherein the corresponding technological parameters comprise bending angle, upper die and lower die used for bending, and coordinates of a rear material stop used for positioning and the like. And marking the process parameters of each step in the same text on the drawing so that the numerical control system can identify the text information in the specific format. The data format can be modified according to actual needs, and corresponding process parameters can be increased or decreased.
The drawing file is transmitted to the numerical control system by the computer, when the numerical control system reads the bending process step process data, a text containing 8 data can be identified, the two data are separated by a comma, and the text is the bending process step process data of one process step.
The data for the operator to refer to include the work step and the corresponding side of berthing, can mark simply, adopt the following format: step one, T. The labels are placed near the corresponding resting edge and the resting edge is indicated with an arrow, as indicated by "1, T": in the first step, an operator places a workpiece to enable the corresponding stopping edge to be in contact with the rear material stop.
In this embodiment, the data for reference by the operator further includes bending tolerance data, including angular tolerances and length tolerances. In the step d, firstly, a sample piece is processed, after the actual angle and length data of the sample piece after bending are detected, the angle and length errors are input into a compensation data column of each working step of the bending machine, then, a workpiece is processed, and if the actual angle and length data of the workpiece meet the bending tolerance requirements, the workpieces can be bent in batches. The bending angle and the bending length need to meet the bending tolerance, and the bending machining precision is guaranteed by pre-machining the sample piece and inputting the compensation data.
In the step c, the drawing file is transmitted to the numerical control system by the computer, and the transmission mode comprises USB flash disk copy, wireless transmission, wired transmission and the like.
Referring to fig. 1, which is an embodiment of drawing labeling, an arrow of "1, T" in the drawing points to an edge AB, that is, in a first step, an operator places a workpiece so that the edge AB contacts with a rear stop to position the workpiece; the technological data of the bending step of the first step is 1, -90,202,502,30,0, -50 and 50, the arrow points to the side CD, namely the bending side of the first step is the side CD, the bending angle is-90 degrees, an upper die with the upper die number of 202 and a lower die with the lower die number of 502 are adopted, the rear material stop is moved to the X-axis coordinate 30, the R-axis coordinate 0, the Z1-axis coordinate-50 and the Z2-axis coordinate 50, and after the movement is in place, an operator controls the bending machine to bend the workpiece. And the other steps are similar, after the bending of the first step is finished, the bending of the next step is carried out, and finally the workpiece shown in the figure 2 is obtained.
The text information of the process data of the bending step of the first step contained in the dxf file is as follows:
AcDbMText
10
1.001435186646026
20
4.413772153128325
30
0.0
40
9.524999999999998
……
1
1,-90,202,502,30,0,-50,50
7
SLDTEXTSTYLE0
the minimum unit of formation of information in the dxf file is a group, each group occupies two rows, the first row is a group code, the second row is a value corresponding to the group code, and the group code and the value appear in pairs to represent a piece of valid information together. The text information "1, -90,202,502,30,0, -50, 50" is the bending step process data.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (8)
1. A bending method of a numerical control bending machine is characterized by comprising the following steps:
a. drawing a development drawing of the workpiece on a computer by a craftsman;
b. marking data on a drawing, wherein the data comprises two parts, namely data for reference of an operator for bending and data with a specific format for reading of a numerical control system, wherein the data for reference of the operator comprises a process step and a corresponding stopping edge, and the data for reading of the numerical control system comprises a plurality of bending process step process data;
c. transmitting the picture file to a numerical control system of a bending machine, reading bending process step process data with a specific format by the numerical control system, and converting the process data into execution steps of the numerical control system, wherein the specific format is a format which can be identified and read by the numerical control system;
d. and starting the bending machine to bend, controlling the bending machine to execute according to the working steps by the numerical control system, placing the workpiece by an operator according to a drawing after the motion control of each shaft is in place, and controlling the bending machine to bend the workpiece according to the working steps.
2. The bending method of the numerical control bending machine according to claim 1, characterized in that: the drawing file adopts a dxf format.
3. The bending method of the numerical control bending machine according to claim 1, wherein the bending process step process data of each process step are marked in the same text, and the format of the bending process step process data is as follows: the method comprises the following steps of working procedure, bending angle, upper die number, lower die number, X-axis coordinate of a rear material blocking plate, R-axis coordinate of the rear material blocking plate, Z1-axis coordinate of the rear material blocking plate and Z2-axis coordinate of the rear material blocking plate.
4. The bending method of the numerical control bending machine according to claim 3, characterized in that: and the numerical control system reads the bending process step process data, and the two data are separated by commas by identifying texts containing 8 data.
5. A bending method of a numerical control bending machine according to any one of claims 1 to 4, wherein in the step b, data for reference of an operator for bending is marked, a stopping edge is indicated by an arrow, and the following data format is adopted: and a step T, wherein the T refers to an operator to place a workpiece, so that the corresponding stopping edge is in contact with the rear material stop.
6. The bending method of the numerical control bending machine according to claim 1, characterized in that: in the step b, data are marked on the drawing, and the data for operators to refer to also comprise bending tolerance data.
7. The bending method of the numerical control bending machine according to claim 6, characterized in that: in the step d, firstly, a sample piece is processed, after the actual angle and length data of the sample piece after being bent are detected, the angle and length errors are input into the compensation data columns of the bending machine in each step, then, a workpiece is processed, and if the actual angle and length data of the workpiece meet the bending tolerance requirements, the workpieces can be bent in batches.
8. The bending method of the numerical control bending machine according to claim 1, characterized in that: in the step c, the drawing file is transmitted to the numerical control system by the computer, and the transmission mode comprises USB flash disk copy, wireless transmission and wired transmission.
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Address after: 510000 room 304, No. 21, Duntou xihouwei, Liwan District, Guangzhou City, Guangdong Province (office only) Patentee after: Guangzhou nulanke Intelligent Technology Co.,Ltd. Address before: 510370 room 304, 21 Duntou xihouwei, Liwan District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU NLKER PRECISION MACHINE TOOL Co.,Ltd. |