CN114442565A - Simulation method for replacing clamp in machining production line - Google Patents
Simulation method for replacing clamp in machining production line Download PDFInfo
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- CN114442565A CN114442565A CN202011232367.8A CN202011232367A CN114442565A CN 114442565 A CN114442565 A CN 114442565A CN 202011232367 A CN202011232367 A CN 202011232367A CN 114442565 A CN114442565 A CN 114442565A
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- machine tool
- clamp
- product
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- operator
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- 238000004088 simulation Methods 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003754 machining Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 239000000284 extract Substances 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41885—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by modeling, simulation of the manufacturing system
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32339—Object oriented modeling, design, analysis, implementation, simulation language
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- General Factory Administration (AREA)
Abstract
The invention relates to a simulation method for replacing a clamp in a machining production line, which is characterized in that a simulation model is constructed according to a preset layout scheme of the machining production line, the resource environment attribute of the manufacturing process is set, and the consistency of the simulation model and a real system is realized. The clamp for clamping the product is stored in the clamp library, when the type of the product to be processed is changed, an operator conveys the clamp used at present back to the clamp library, extracts the required clamp from the clamp library and installs the required clamp on a machine tool. In the production line simulation model, the control logic of the control simulation system is designed, so that an operator can obtain the consistency of the logic of the clamp and the actual situation, the consistency of the simulation quality and the simulation animation and the actual situation is emphasized in detail, the running process of the actual manufacturing system can be restored to the maximum extent, and the precision and the confidence coefficient of the simulation model are improved.
Description
Technical Field
The invention belongs to the field of machining production, and particularly relates to a method for simulating fixture replacement in a machining production line.
Background
Under the common condition, a workshop uses a discrete event system simulation technology to establish a production line simulation model of the workshop before the workshop is put into production, so as to simulate the actual production flow, evaluate the conditions of the yield, the utilization rate, the personnel configuration and the like of each device and avoid the fund waste or the system capacity insufficiency caused by blind decision when the workshop is put into production;
in actual production of a workshop production line, a clamp replacing process is replaced by setting preset time, the process of replacing the clamp by an operator is not clear, and a simulation model cannot simulate an actual production process, so that a simulation result is inaccurate, and the yield, the utilization rate and the personnel configuration of each device cannot be accurately evaluated.
Disclosure of Invention
The invention provides a simulation method for replacing a clamp in a machining production line, which aims to solve the technical problems that: most of the prior manufacturing system simulations do not consider the problem of the clamping changing process of the machine tool.
In order to solve the technical problem, the invention provides a method for simulating the replacement of a clamp in a machining production line, which is characterized by comprising the following steps:
step one, building a simulation model according to a preset layout scheme of a processing production line: the manufacturing resources of the simulation model comprise a temporary storage area, a clamp library, two trays, three machine tools and an operator;
step two, setting the resource environment attribute of the manufacturing process: setting attribute parameters of each manufacturing resource according to the collected data of each manufacturing resource;
step three, realizing the consistency of the simulation model and the real system by the following method:
in the initial state of the simulation model, products are forbidden to enter a first machine tool and a second machine tool, an empty data A table and an empty data B table are created, the values of the A table and the B table are set to be 0, an operator receives a command of product processing, then goes to a clamp library to pick up a clamp and installs the clamp on a first tray, meanwhile, after the first machine tool receives the command of clamp installation, the operator installs the products on the first machine tool from a temporary storage area for processing, the first machine tool only processes one product, and the type value X of the product is recorded in the A table; when the product is processed and leaves the first machine tool, the remaining unprocessed products in the temporary storage area sequentially enter a third machine tool, the type value Y of the entering products is recorded in the B table, and the type values of the A table and the B table are obtained and compared:
if the value X of the table A is equal to the value Y of the table B, namely the last processed product is the same as the type of the product to be processed, the unprocessed product enters a second machine tool for processing; when the product leaves the third machine tool, the value of the B table is refreshed into the value of the A table, so that the value of the A table and the value of the B table are compared when the next product enters the third machine tool;
when the value X of the table A is not equal to the value Y of the table B, the operator conveys the clamp from the first tray to the clamp library, and then takes the corresponding clamp and places the clamp on a second tray of a second machine tool; after the third machine tool detects the command that the second tray is installed, releasing the product to the second machine tool for machining, and refreshing the value of the B table into the value of the A table while releasing;
when the values of the two tables are the same, the product enters a second machine tool for processing, and when the values of the two tables are different, the product enters the second machine tool for processing after being replaced by the clamp of the second tray; and by parity of reasoning, the processing of all products is completed.
Has the advantages that: the clamp for clamping the product is stored in the clamp library, when the type of the product to be processed is changed, an operator conveys the clamp used at present back to the clamp library, extracts the required clamp from the clamp library and installs the required clamp on a machine tool. In the production line simulation model, the control logic of the control simulation system is designed, so that an operator can obtain the consistency of the logic of the clamp and the actual situation, the consistency of the simulation quality and the simulation animation and the actual situation is emphasized in detail, the running process of the actual manufacturing system can be restored to the maximum extent, and the precision and the confidence coefficient of the simulation model are improved. The invention can be applied to other similar occasions, and is not limited in the simulation process of replacing the clamp by an operator when the product type is changed.
Detailed Description
In order to make the objects, contents and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention is provided.
The invention provides a simulation method for replacing a clamp in a machining production line, which comprises the following steps:
the method comprises the following steps: adopting Flexsim simulation software, and constructing a simulation model according to a preset layout scheme of a processing production line:
the simulation model comprises manufacturing resources such as a clamp library, trays, machine tools, operators and the like, wherein each of the two machine tools is provided with one tray correspondingly, and the operator is used for placing the clamps in the clamp library on the trays of the machine tools; the temporary storage area is used for storing unprocessed products, and the third machine tool is used for detecting whether the processed products and the unprocessed products are of the same type;
step two: setting the environmental attribute of the manufacturing process resource:
setting attribute parameters of each manufacturing resource, such as the walking speed of an operator, the time for installing and removing the clamp and the position for placing the clamp, according to the collected data of each manufacturing resource;
step three: the consistency of the simulation model and a real system is ensured, and the method is realized by the following steps:
in the simulation model, in the initial state of the model, products are prohibited to enter a first machine tool and a second machine tool, an empty data A table and an empty data B table are created, the values of the A table and the B table are set to be 0, an operator receives a command of product processing, goes to a clamp library to pick up a clamp and installs the clamp on a first tray, and meanwhile, after the first machine tool receives the command of clamp installation, the operator installs the products on the first machine tool from a temporary storage area for processing, only one product is processed by the first machine tool, and the type value X of the product is recorded in the A table; when the product is machined and leaves the first machine tool, the residual unprocessed products in the temporary storage area sequentially enter a third machine tool, the type value Y of the entering products is recorded in a table B, the type values of the table A and the table B are obtained and then compared, if the value X of the table A is equal to the value Y of the table B, the last machined product is the same as the type of the product to be machined, and the unprocessed products enter a second machine tool for machining; when the product leaves the third machine tool, the value of the B table is refreshed into the value of the A table, so that the value of the A table and the value of the B table are compared when the next product enters the third machine tool; when the value X of Table A is not equal to the value Y of Table B, the operator transports the fixture from the first pallet back to the fixture library, then picks up the corresponding fixture and places it on the second pallet of the second machine tool. And after the third machine tool detects the command that the second tray is installed, releasing the product to the second machine tool for machining, refreshing the value of the B table into the value of the A table while releasing, and comparing the value of the A table with the value of the B table when the next product enters the third machine tool. And when the values of the two tables are the same, the product enters a second machine tool for processing, and when the values of the two tables are different, the product enters the second machine tool for processing after the fixture of the second tray is replaced. And the like, and the processing of all products is completed. After all codes are set, the animation effect that an operator takes the clamp more when the type of a product is changed can be realized.
It should be noted that the first machine tool functions as a detection station, and the machining time can be set to 0 in order to compare the values of the data a table and the B table. The second machine tool machines the products to be machined, the second machine tool machines only one product, and the rest of the products are machined on the third machine tool. Two machine tools are required in order to achieve the same number of product types, whether 1 or more, that are just starting to be machined, the method can still be implemented. The method is easier to realize because the number of the trays in the jig library is only one, and the number of the trays is more than one. The operator needs a certain time to install and retrieve the clamp, and the time can be set in the operator's loading and unloading trigger according to the actual time used.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A simulation method for replacing a clamp in a machining production line is characterized by comprising the following steps:
step one, building a simulation model according to a preset layout scheme of a processing production line: the manufacturing resources of the simulation model comprise a temporary storage area, a clamp library, two trays, three machine tools and an operator;
step two, setting the resource environment attribute of the manufacturing process: setting attribute parameters of each manufacturing resource according to the collected data of each manufacturing resource;
step three, realizing the consistency of the simulation model and the real system by the following method:
in the initial state of the simulation model, products are forbidden to enter a first machine tool and a second machine tool, an empty data A table and an empty data B table are created, the values of the A table and the B table are set to be 0, an operator receives a command of product processing, then goes to a clamp library to pick up a clamp and installs the clamp on a first tray, meanwhile, after the first machine tool receives the command of clamp installation, the operator installs the products on the first machine tool from a temporary storage area for processing, the first machine tool only processes one product, and the type value X of the product is recorded in the A table; when the product is processed and leaves the first machine tool, the remaining unprocessed products in the temporary storage area sequentially enter a third machine tool, the type value Y of the entering products is recorded in the B table, and the type values of the A table and the B table are obtained and compared:
if the value X of the table A is equal to the value Y of the table B, namely the last processed product is the same as the type of the product to be processed, the unprocessed product enters a second machine tool for processing; when the product leaves the third machine tool, the value of the B table is refreshed into the value of the A table, so that the value of the A table and the value of the B table are compared when the next product enters the third machine tool;
when the value X of the table A is not equal to the value Y of the table B, the operator conveys the clamp from the first tray to the clamp library, and then takes the corresponding clamp and places the clamp on a second tray of a second machine tool; after the third machine tool detects the command that the second tray is installed, releasing the product to the second machine tool for machining, and refreshing the value of the B table into the value of the A table while releasing;
when the values of the two tables are the same, the product enters a second machine tool for processing, and when the values of the two tables are different, the product enters the second machine tool for processing after being replaced by the clamp of the second tray; and the like, and the processing of all products is completed.
2. The simulation method for replacing jigs in a machining line according to claim 1, wherein the attribute parameters of each manufacturing resource include speed of walking by an operator, time for installing and removing jigs, and position of jig placement.
3. The simulation method for changing jigs in a machining line according to claim 1, wherein the first machine tool is adapted to function as an inspection station.
4. A simulation method of a change of tool in a machining line according to claim 1, characterised in that the second machine tool and the third machine tool machine the product to be machined, the second machine tool only machines one product and the remaining products are machined on the third machine tool.
5. A simulation method of a change of grippers in a machining line according to any of claims 1 to 4, characterized in that the time required for the operator to mount and retrieve the grippers is such that the time can be set in the operator's loading and unloading triggers according to the time actually used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232367.8A CN114442565A (en) | 2020-11-06 | 2020-11-06 | Simulation method for replacing clamp in machining production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232367.8A CN114442565A (en) | 2020-11-06 | 2020-11-06 | Simulation method for replacing clamp in machining production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114442565A true CN114442565A (en) | 2022-05-06 |
Family
ID=81361574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011232367.8A Withdrawn CN114442565A (en) | 2020-11-06 | 2020-11-06 | Simulation method for replacing clamp in machining production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114442565A (en) |
-
2020
- 2020-11-06 CN CN202011232367.8A patent/CN114442565A/en not_active Withdrawn
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| PB01 | Publication | ||
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Application publication date: 20220506 |