CN112464460B - FDS process plate strength judging method, system, electronic equipment and storage medium - Google Patents
FDS process plate strength judging method, system, electronic equipment and storage medium Download PDFInfo
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- CN112464460B CN112464460B CN202011314537.7A CN202011314537A CN112464460B CN 112464460 B CN112464460 B CN 112464460B CN 202011314537 A CN202011314537 A CN 202011314537A CN 112464460 B CN112464460 B CN 112464460B
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000008569 process Effects 0.000 title claims abstract description 31
- 238000003860 storage Methods 0.000 title claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000003313 weakening effect Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method, a system, electronic equipment and a storage medium for judging the strength of an FDS process plate, wherein the judging method comprises the following steps: setting: setting the lower limit value of the piercing force of the riveting points with different point numbers on the workpiece; the acquisition step: calling riveting data information of a current riveting point stored in riveting equipment; the processing steps are as follows: obtaining the maximum downward pressure of the current riveting point in the puncturing stage according to the riveting data information; judging: comparing the maximum lower pressure of the current riveting point in the puncturing stage with the lower limit value of the puncturing force of the riveting point with the same kind of point number as the current riveting point, if the lower pressure of the current riveting point is smaller than the lower limit set value of the puncturing force, judging that the plate strength is weakened, otherwise, judging that the plate strength is normal. The invention can monitor whether the strength of the plate in the FDS process is weakened or not in real time, can accurately know the change of the strength of the plate through an algorithm, can timely find the quality problem in the production process, and reduces the conditions of scrapping of the white car body and the like caused by the weakening of the strength of the plate.
Description
Technical Field
The invention relates to an FDS riveting process, in particular to a judging method for weakening plate strength of the FDS riveting process, electronic equipment and a storage medium.
Background
The FDS (self tapping and hot melting) technology is to enable a cutter head to rotate at a high speed, rub with a plate to be connected under the action of downward pressure, enable the plate to be connected to locally soften and plastically flow, form a connection area, and finally realize connection with threads on the outer side of a screw through tapping and meshing.
The FDS process comprises the steps of pre-perforating, cap searching, puncturing, tapping, screwing, seating and the like. FDS are widely used in automotive joints because of their simplicity of operation and ability to obtain better quality connectors.
The white body is formed by connecting a large number of plates, and the strength reduction of the plates can influence the quality of the FDS process connection.
Because of the particularity of the white car body, the strength of each sheet material cannot be measured manually in real time in the production process.
At present, an operator only uses a torque wrench to test whether defects such as sliding teeth, unseating and the like are generated on each point of the FDS, in actual production, a detector cannot detect the strength of a plate, the strength of the plate cannot be detected in time in the production process, then the quality defect is found, and the quality defect cannot be found in time, so that the white car body is possibly scrapped.
Disclosure of Invention
The invention aims to provide a method and a system for judging the plate strength of an FDS riveting process, which can timely find the quality problem caused by the plate strength of the FDS riveting process in the production process.
Therefore, the invention provides a method for judging the strength of a plate in an FDS riveting process, which comprises the following steps: setting: setting the lower limit value of the piercing force of the riveting points with different point numbers on the workpiece; the acquisition step: calling riveting data information of a current riveting point stored in riveting equipment; the processing steps are as follows: obtaining the maximum downward pressure of the current riveting point in the puncturing stage according to the riveting data information; judging: comparing the maximum lower pressure of the current riveting point in the puncturing stage with the lower limit value of the puncturing force of the riveting point with the same kind of point number as the current riveting point, if the lower pressure of the current riveting point is smaller than the lower limit set value of the puncturing force, judging that the plate strength is weakened, otherwise, judging that the plate strength is normal.
The invention also provides a system for judging the strength of the FDS riveting process plate, which comprises the following steps: the setting unit is used for setting the lower limit value of the piercing force of the riveting points with different point numbers on the workpiece; the acquisition unit is used for calling riveting data information of the current riveting point stored in the riveting equipment; the processing unit is used for obtaining the maximum pressing force of the current riveting point in the puncturing stage according to the riveting data information; and the judging unit is used for comparing the maximum lower pressure of the current riveting point in the puncturing stage with the lower limit value of the puncturing force of the riveting point with the same point number as the current riveting point, judging that the plate strength is weakened if the lower pressure of the current riveting point is smaller than the lower limit set value of the puncturing force, and otherwise judging that the plate strength is normal.
The invention also provides an electronic device comprising a processor and a memory, wherein the memory stores an application program, and the processor is used for running the application program in the memory to realize the steps of the method for judging the strength of the plate according to the FDS riveting process.
The present invention also provides a storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the FDS riveting process panel strength determination method according to the above description.
The invention can monitor whether the strength of the plate in the FDS process is weakened or not in real time, can accurately know the change of the strength of the plate through an algorithm, can timely find the quality problem in the production process, and reduces the conditions of scrapping of the white car body and the like caused by the weakening of the strength of the plate.
The invention can replace manual detection, greatly helps production personnel analyze quality defects, reduces production cost and improves production efficiency.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
Fig. 1 is a flowchart of a method for determining the weakening of a panel in an FDS riveting process according to the present invention;
FIG. 2 is a graph of data sources used in the decision method according to the present invention; and
Fig. 3 is a block diagram of a decision system for FDS riveting process panel strength degradation in accordance with the present invention.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The invention is applied to a hot-melt self-tapping process (FDS riveting process). In practicing the present invention, we find that: the plate strength is reduced and the required penetration pressure value is reduced. Based on the method, a lower pressure value less than a lower limit set value of the puncturing force in the puncturing stage is used as a criterion for weakening the plate strength. The name of the maximum downward pressure in the puncturing phase in the data is also called puncturing-downward pressure.
As shown in fig. 1, the method for determining the strength of the panel in the FDS riveting process according to the present invention includes:
setting step S1: setting the lower limit value of the piercing force of the riveting points with different point numbers on the workpiece, for example, setting the lower limit value of the piercing force of the riveting points with different point numbers on the white lathe body one by one;
Acquisition step S2: calling riveting data information of a current riveting point stored in riveting equipment;
Processing step S3: obtaining the maximum downward pressure of the current riveting point in the puncturing stage according to the riveting data information;
Determination step S4: comparing the maximum lower pressure of the current riveting point in the puncturing stage with the lower limit value of the puncturing force of the riveting point with the same kind of point number as the current riveting point, if the lower pressure of the current riveting point is smaller than the lower limit set value of the puncturing force, judging that the plate strength is weakened, otherwise, judging that the plate strength is normal.
In an embodiment, the invention calls the riveting data information in the group control database through the data acquisition system, and as shown in fig. 2, the riveting data information comprises a stored car body number, a stored curve, a plate overlap combination and a stored point number. The stored car body numbers and the stored curves are provided by the equipment storage section from a group control database of a group control software end. The plate overlap combination and the stored point number are provided by a CSV file at the equipment storage end from a group control database at the group control software end. The riveting data information also comprises a screw model, which is manually input.
In an embodiment, the maximum downward pressure of the puncturing stage is obtained by calling a characteristic data file or a curve file of the riveting equipment through the data acquisition system.
In one embodiment, deparg devices (FDS devices provided by Deparg) are used to perform different matrix overlapping, the puncture pressure is obtained through Deparg software (device software configured for its FDS devices by Deparg), and then whether the plate strength weakening occurs is determined through a program already set by the operator. If so, the strength of the bottom plate of the connecting piece is tested, so that the accuracy of the algorithm is verified.
The invention collects each point curve in actual production and converts the curve into data. And carrying out inductive fitting according to a large amount of data and outputting a corresponding judgment algorithm.
In the present invention, the method of setting the puncture force lower limit value is as follows:
inputting the point number of the riveting point;
Searching a plurality of pieces of riveting data information of the same kind of point number as the riveting point, and calculating the average value u and standard deviation sigma of the maximum downward pressure in the puncturing stage; and
Mu-3 sigma is set as the lower limit value of the puncture force.
For example, 100 pieces of data are taken from the field, the average value u and standard deviation σ thereof are calculated, and μ -3σ is set as the puncture force lower limit value.
The invention also provides a FDS process plate strength judging system, as shown in fig. 3, which comprises a setting unit 10 for setting the lower limit value of the piercing force of the riveting points with different point numbers on the workpiece; the acquisition unit 20 is used for calling riveting data information of the current riveting point stored in the riveting equipment; the processing unit 30 is configured to obtain a maximum pressing force of the current riveting point in a piercing stage according to the riveting data information; a judging unit 40, configured to compare the maximum lower pressure of the current riveting point in the piercing stage with a lower limit value of the piercing force of the riveting point with the same point number as the current riveting point, and judge that the plate strength is weakened if the lower pressure of the piercing stage is less than the lower limit set value of the piercing force, otherwise judge that the plate strength is normal; and an alarm unit 50 for giving an alarm to inform the relevant person when it is determined that the strength of the panel is weakened.
The FDS process board strength determining system may be integrated in an electronic device, which may be a server or a terminal.
The server may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, network acceleration services (Content Delivery Network, CDN), basic cloud computing services such as big data and an artificial intelligent platform.
The terminal can be a smart phone, a tablet computer, a notebook computer, a desktop computer, a smart speaker, a smart watch, etc. The terminal and the server may be directly or indirectly connected through wired or wireless communication.
The computer-readable storage medium may include: a Read Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or optical disk, etc., which stores an FDS process panel strength determination program for implementing the steps of the above-described FDS process panel strength determination method.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. 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 (7)
1. The method for judging the strength of the plate in the FDS riveting process is characterized by comprising the following steps of:
setting: setting the lower limit value of the piercing force of the riveting points with different point numbers on the workpiece;
The acquisition step: calling riveting data information of a current riveting point stored in riveting equipment;
the processing steps are as follows: obtaining the maximum downward pressure of the current riveting point in the puncturing stage according to the riveting data information;
Judging: comparing the maximum lower pressure of the current riveting point in the puncturing stage with the lower limit value of the puncturing force of the riveting point with the same point number as the current riveting point, judging that the plate strength is weakened if the lower pressure of the current riveting point is smaller than the lower limit set value of the puncturing force, otherwise judging that the plate strength is normal,
The method for setting the lower limit value of the piercing force of the riveting point with different point numbers on the workpiece comprises the following steps:
Inputting the point number of the riveting point; and
Searching a plurality of pieces of riveting data information of the same kind of point number as the riveting point, and calculating the average value u and standard deviation sigma of the maximum downward pressure in the puncturing stage; and
Mu-3 sigma is set as the lower limit value of the puncture force.
2. The FDS riveting process panel strength determination method of claim 1, wherein the riveting data information is from a profile or curve file configured in a riveting apparatus or from an apparatus group control database.
3. The FDS riveting process panel strength determination method as claimed in claim 1, further comprising: and alarming when the strength of the plate is judged to be weakened.
4. An FDS riveting process panel strength determination system, comprising:
The setting unit is used for setting the lower limit value of the piercing force of the riveting points with different point numbers on the workpiece;
the acquisition unit is used for calling riveting data information of the current riveting point stored in the riveting equipment;
The processing unit is used for obtaining the maximum pressing force of the current riveting point in the puncturing stage according to the riveting data information;
A judging unit for comparing the maximum lower pressure of the current riveting point in the piercing stage with the lower limit value of the piercing force of the riveting point with the same point number as the current riveting point, judging that the plate strength is weakened if the lower pressure of the piercing stage is smaller than the lower limit set value of the piercing force, otherwise judging that the plate strength is normal,
The method for setting the lower limit value of the piercing force of the riveting point with different point numbers on the workpiece comprises the following steps:
Inputting the point number of the riveting point; and
Searching a plurality of pieces of riveting data information of the same kind of point number as the riveting point, and calculating the average value u and standard deviation sigma of the maximum downward pressure in the puncturing stage; and
Mu-3 sigma is set as the lower limit value of the puncture force.
5. The FDS riveting process panel strength determination system as claimed in claim 4, further comprising: and the alarm unit is used for alarming when the strength of the plate is judged to be weakened.
6. An electronic device comprising a processor and a memory, said memory storing an application program, said processor for running the application program in said memory to implement the steps of the FDS riveting process panel strength determination method according to any one of claims 1 to 3.
7. A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the FDS riveting process panel strength determination method according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011314537.7A CN112464460B (en) | 2020-11-20 | 2020-11-20 | FDS process plate strength judging method, system, electronic equipment and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011314537.7A CN112464460B (en) | 2020-11-20 | 2020-11-20 | FDS process plate strength judging method, system, electronic equipment and storage medium |
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| Publication Number | Publication Date |
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| CN112464460A CN112464460A (en) | 2021-03-09 |
| CN112464460B true CN112464460B (en) | 2024-07-05 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008055496A (en) * | 2006-09-04 | 2008-03-13 | Hitachi Information & Communication Engineering Ltd | Staking-punching apparatus and staking-punch method |
| JP2009183975A (en) * | 2008-02-05 | 2009-08-20 | Fukui Byora Co Ltd | Staking quality judging method for driving rivet staking |
| CN108296406A (en) * | 2018-04-04 | 2018-07-20 | 眉山中车紧固件科技有限公司 | Intelligent riveting system |
| CN110744000B (en) * | 2019-09-06 | 2020-12-15 | 安徽巨一科技股份有限公司 | Method for monitoring service life of self-punching riveting die of steel-aluminum hybrid vehicle body based on riveting curve |
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- 2020-11-20 CN CN202011314537.7A patent/CN112464460B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 热熔自攻丝铆接特征参数对钢铝连接铆点质量影响;王有道;《AT&M视界》;P10-14 * |
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