CN101059696A - Automatic collection method for mechanical processing task progress state based on machine tool power information - Google Patents
Automatic collection method for mechanical processing task progress state based on machine tool power information Download PDFInfo
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Abstract
A method for automatically collecting the process state of mechanical machining mission based on machine power information can resolve the data collecting problem of on-site control layer of information system of prior producer. The method automatically collects the process state of mechanical machining mission according to the change and repeat of power information, information character, and period character of main motor of the machine. For batch machining mission, the method comprises that (1), recording the power curvature in teach process, analyzing and extracting information character, (2), comparing the power curvature and the information character of same batch after teaching with the teach, to obtain the process state information of mission. For single element, the method comprises that (1), building an idle database, (2), calculating the cutting power, (3), forming a similar power curvature, (4), comparing real power with similar power, to automatically obtain the process state of the work piece.
Description
Technical field
The present invention relates to machinery manufacturing industry, communication technique field, belong to information acquisition and signal processing method in the manufacturing system; Be specifically related to a kind of method based on machine power automatic information collecting machining Task Progress state.
Background technology
So-called machining production task is certain each concrete final products are produced number in each concrete time period plan.The production schedule is specialized the product systems in operating plan or the production outline according to client's contract and market forecast, makes this become the effect of forming a connecting link of MRP to the practical plans transition that launch.
At present, most of manufacturing enterprise has implemented enterprise IT project, to accelerate the paces that enterprise development is advanced.Yet in the process that enterprise information system is implemented, have some difficulties, be the automatic acquisition problems of bottom production scene data that is machining Task Progress, it comprises in the batch machining processing parts quantity and just is being difficult to be gathered at important informations such as processing parts processing progress state and single-piece production Task Progress situations.At present, enterprise mostly finishes the collection of machining Task Progress state by artificial regular statistics.This artificial method of statistics regularly causes following 3 problems: 1. the data feedback is untimely; 2. complicate statistics is made mistakes easily; 3. labor intensive resource.This must influence the benefit that the IT application in enterprises system should produce.
Summary of the invention
Gather above shortcomings at present production scene machining Task Progress status data, the purpose of this invention is to provide the method that a kind of data feedback is timely, add up accurately, reduce the collection enterprise machining Task Progress of human cost.
Technical scheme of the present invention is: based on the method for machine power automatic information collecting machining Task Progress state, be to introduce power sensor between machine motor and frequency converter, power sensor is connected with terminal by mould/number conversion module.Be used for the power of the terminal of information acquisition and processing by harvester bed operating process (comprise with power and have the electric current of funtcional relationship or power factor etc.) curve, extract the process power information feature and the periodic characteristic of workpiece, by signature analysis and comparison, obtain the status information of machine tooling task automatically.
For batch machining, the step that terminal is obtained progress status automatically is:
1. utilize in terminals such as computing machine or the embedded system record batch machining power conditional curve of lathe master motor in the teaching part processing process, and analyze, extract the information characteristics of this process powertrace;
2. write down after the teaching with a collection of part processing process work rate curve and extract its information characteristics, compare with the power conditional curve and the information characteristics that is 1. write down in the step, thereby obtain machining Task Progress status information automatically, comprise the workpiece quantity that machined and just in the dynamic progress situation of processing work;
3. add up and write down processing parts quantity, promptly obtain the workpiece quantity that has machined;
4. by comparing the power information and the feature thereof of lathe master motor in part processing process and the teaching process, obtain just in the manufactured parts processing progress.
For single-piece work, the step that terminal is obtained progress status automatically is:
1. utilize the no-load power database under the terminal storage lathe rotating speeds at different levels;
2. the cutting parameter according to workpiece to be processed calculates the cutting power curve;
3. with cutting power curve and corresponding no-load power addition, form the approximate powertrace of workpiece process lathe master motor;
4. write down real power curve and above-mentioned approximate powertrace relatively, just can obtain progress status information at processing work.
The present invention utilizes the power information of lathe master motor to realize the automatic collection of machining Task Progress state, has the following advantages compared to existing technology:
1. the power information reaction is very fast, can in time react actual processing;
2. power information comprises most machining informations of process, helps monitoring in real time the situation of change of process;
3. the power information acquisition method is simple, and does not influence ordinary production;
4. the acquisition method of power information is stable, can not change because of the change of system of processing;
5. statistics is accurate, saves human resources.
Through practice test, this method is effective and feasible.Utilize the present invention will solve the automatic acquisition problems of machining Task Progress state, thereby increase the benefit of enterprise.
Description of drawings
Fig. 1 is a kind of specific embodiment hardware of the present invention connection layout;
Fig. 2 A is the power conditional curve of the teaching part remembered in the batch machining terminal;
Fig. 2 B is the powertrace of part processing process after the teaching in the batch machining;
Fig. 2 C be in the batch machining certain part just in the process powertrace of processing parts;
Fig. 3 is a batch machining machining Task Progress state automatic acquiring method process flow diagram;
Fig. 4 is a single-piece work machining Task Progress state automatic acquiring method process flow diagram.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments
The present invention is based on the method for machine power information acquisition machinery processing progress state, is to introduce power sensor between machine motor and frequency converter, and power sensor is connected with terminal by mould/number conversion module.Referring to Fig. 1 as can be known, from hardware aspect, main hardware comprises:
(1) power sensor (module) is responsible for gathering lathe master's power input to machine information and this information is carried out filtering and processing and amplifying.
(2) to be responsible for analog signal conversion be that digital signal is used for next step to mould/number conversion module.
(3) this terminal of terminal is a system core part, is responsible for memory, analyzes, compares and judges lathe master's power input to machine procedural information and information characteristics thereof, obtains machining Task Progress state.
Embodiment 1:
Batch machining machining Task Progress state is gathered specific embodiment automatically:
Processing work: certain motorcycle parts
Lathe: CKA6140
Sensor: WBQ212P71
Terminal: iTouch121A (T) Embedded Intelligent Terminal
A/D converter: the on-the-spot observing and controlling server of HTK-NDC1 Ethernet
Three road work steps: 1. turning face
2. cut end face
3. cut end face
Drive in the drive system of asynchronous motor at frequency converter, batch machining machining Task Progress state acquisition flow process as shown in Figure 3,1. the present invention utilizes the power information of power sensor collection by frequency converter output; 2. sensor output 0 ~ 5V analog voltage signal, and output to A/D converter and carry out analog to digital conversion and obtain digital signal; 3. A/D converter is sent digital signal into terminal and is handled; 4. terminal processes obtains the power information and the information characteristics curve thereof of part processing process in the batch machining, as shown in the figure, Fig. 2 A is the power conditional curve of the teaching part (being generally first) remembered in the terminal, Fig. 2 B is the powertrace of part processing process after the teaching in the batch machining, Fig. 2 C be in the batch machining certain part just in the process powertrace of processing parts; 5. obtain machining Task Progress state in the batch machining, terminal analysis comparison diagram 2B and Fig. 2 A, Fig. 2 B has finished the part processing process work rate curve that terminal is remembered, and by the terminal front record finished work quantity that adds up, can obtain processing parts quantity; Analyze and comparison diagram 2C in powertrace progress shared ratio in Fig. 2 A just can obtain processing progress state at processing parts.Last terminal is uploaded this production schedule progress collection result, uses for the upper strata.So far, gather end automatically based on machine power information batch machining machining Task Progress state.
Embodiment 2:
Single-piece work machining Task Progress state is gathered specific embodiment automatically:
The same batch machining of hardware connection layout is shown as Fig. 1.Drive in the drive system of asynchronous motor at frequency converter, single-piece work machining Task Progress state acquisition flow process as shown in Figure 4.Its collecting method is identical with batch machining.The terminal automatic acquiring method is:
1. inquire unloaded database in first being processed and do not exist, the starting lathe uses different rotating speeds, obtains the no-load power under the rotating speeds at different levels, forms the no-load power database; 2. require to obtain cutting data according to manufacturing procedure, by theoretical formula theory of computation cutting power; 3. with the no-load power addition under the corresponding with it rotating speed of desired cut power, obtain the theoretical power curve; 4. when workpiece processing, obtain lathe main motor current curve, relatively real power curve proportion in theoretical Processing Curve can obtain the processing progress state of processing work.Last terminal is uploaded this production schedule progress collection result, uses for the upper strata.So far, gather end automatically based on machine power information single-piece work machining Task Progress state.
Instantiation of the present invention is that key-course is realized the application that machining Task Progress state is gathered automatically in the batch machining at the scene.Machining Task Progress state refers to processing parts quantity and just at processing parts progress status etc. in the batch machining.Utilize the present invention can fast and effeciently obtain the progress status of machining task, for the analysis on upper strata provides instant data reliably.In addition, also can realize monitoring to equipment by this original power information, performance evaluation, utilization rationally, safe operation, fault diagnosis and the equipment that can be equipment control automatically lays the first stone.It is by lathe and utilize computing machine or information terminal collection such as embedded system and processing power information realize gathering effectively automatically of machining Task Progress state, thereby makes the bigger effect of enterprise information system performance.
Claims (3)
1, based on the method for machine power automatic information collecting machining Task Progress state, it is characterized in that power correlation curve by harvester bed operating process, extract the process power information feature and the periodic characteristic of workpiece, by signature analysis and comparison, obtain the status information of machine tooling task automatically.
2, the method based on machine power automatic information collecting machining Task Progress state according to claim 1 for batch machining, is characterized in that the step of obtaining progress status automatically is:
1. utilize in computing machine or the embedded system terminal record batch machining power conditional curve of lathe master motor in the teaching part processing process, and analyze, extract the information characteristics of this process powertrace;
2. write down after the teaching with a collection of part processing process work rate curve and extract its information characteristics, compare with the power conditional curve and the information characteristics that is 1. write down in the step, thereby obtain machining Task Progress status information automatically, comprise the workpiece quantity that machined and just in the dynamic progress situation of processing work;
3. add up and write down processing parts quantity, promptly obtain the workpiece quantity that has machined;
4. by comparing the power information and the feature thereof of lathe master motor in part processing process and the teaching process, obtain just in the manufactured parts processing progress.
3, the method based on machine power automatic information collecting machining Task Progress state according to claim 1 for single-piece work, is characterized in that the step of obtaining progress status automatically is:
1. utilize the no-load power database under the terminal storage lathe rotating speeds at different levels;
2. the cutting parameter according to workpiece to be processed calculates the cutting power curve;
3. with cutting power curve and corresponding no-load power addition, form the approximate powertrace of workpiece process lathe master motor;
4. write down real power curve and above-mentioned approximate powertrace relatively, just can obtain progress status information at processing work.
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| CNB2007100784061A CN100432878C (en) | 2007-04-20 | 2007-04-20 | Automatic collection method for mechanical processing task progress state based on machine tool power information |
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| CNB2007100784061A CN100432878C (en) | 2007-04-20 | 2007-04-20 | Automatic collection method for mechanical processing task progress state based on machine tool power information |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235555A (en) * | 2013-04-18 | 2013-08-07 | 重庆大学 | On-line machine tool equipment utilization state monitoring method and device based on power information |
| CN103473640A (en) * | 2013-09-04 | 2013-12-25 | 重庆大学 | Processing progress information collecting method based on stress state of machine tool cutter |
| CN103842921A (en) * | 2011-10-06 | 2014-06-04 | 株式会社日立制作所 | Production planning device and production planning method |
| CN104503362A (en) * | 2014-12-30 | 2015-04-08 | 重庆大学 | Multi-information fusion based automatic collection method for batched numerical control workpiece machining progress |
| CN104669057A (en) * | 2015-01-31 | 2015-06-03 | 重庆大学 | Additional load loss coefficient acquiring method of machining system of machine tool |
| CN111368950A (en) * | 2020-03-03 | 2020-07-03 | 南京云岗智能科技有限公司 | Production line product identity information identification method, equipment, storage medium and device |
| CN111993157A (en) * | 2020-08-24 | 2020-11-27 | 南京工程学院 | Machining equipment production state monitoring system and method based on electric signals |
| CN112171376A (en) * | 2020-08-21 | 2021-01-05 | 杭州玖欣物联科技有限公司 | Machine tool workpiece real-time statistical method based on current signal segmentation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0895602A (en) * | 1994-09-22 | 1996-04-12 | Nissei Build Kogyo Co Ltd | Drive control method/device for drive subject in automatic machine |
-
2007
- 2007-04-20 CN CNB2007100784061A patent/CN100432878C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103842921A (en) * | 2011-10-06 | 2014-06-04 | 株式会社日立制作所 | Production planning device and production planning method |
| CN103842921B (en) * | 2011-10-06 | 2016-05-18 | 株式会社日立制作所 | Production schedule device and production schedule method |
| CN103235555B (en) * | 2013-04-18 | 2015-03-18 | 重庆大学 | On-line machine tool equipment utilization state monitoring method and device based on power information |
| CN103235555A (en) * | 2013-04-18 | 2013-08-07 | 重庆大学 | On-line machine tool equipment utilization state monitoring method and device based on power information |
| CN103473640A (en) * | 2013-09-04 | 2013-12-25 | 重庆大学 | Processing progress information collecting method based on stress state of machine tool cutter |
| CN104503362A (en) * | 2014-12-30 | 2015-04-08 | 重庆大学 | Multi-information fusion based automatic collection method for batched numerical control workpiece machining progress |
| CN104503362B (en) * | 2014-12-30 | 2017-07-07 | 重庆大学 | Batch workpiece digital control processing progress automatic acquiring method based on Multi-information acquisition |
| CN104669057A (en) * | 2015-01-31 | 2015-06-03 | 重庆大学 | Additional load loss coefficient acquiring method of machining system of machine tool |
| CN104669057B (en) * | 2015-01-31 | 2017-02-22 | 重庆大学 | Additional load loss coefficient acquiring method of machining system of machine tool |
| CN111368950A (en) * | 2020-03-03 | 2020-07-03 | 南京云岗智能科技有限公司 | Production line product identity information identification method, equipment, storage medium and device |
| CN112171376A (en) * | 2020-08-21 | 2021-01-05 | 杭州玖欣物联科技有限公司 | Machine tool workpiece real-time statistical method based on current signal segmentation |
| CN112171376B (en) * | 2020-08-21 | 2022-05-10 | 杭州玖欣物联科技有限公司 | Machine tool workpiece real-time statistical method based on current signal segmentation |
| CN111993157A (en) * | 2020-08-24 | 2020-11-27 | 南京工程学院 | Machining equipment production state monitoring system and method based on electric signals |
| CN111993157B (en) * | 2020-08-24 | 2021-07-06 | 南京工程学院 | Machining equipment production state monitoring system and method based on electric signals |
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| CN100432878C (en) | 2008-11-12 |
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Assignee: Kunming DOS Machine Co. Ltd Assignor: Chongqing University|Chongqing haiteke system integration Co., Ltd.|Chongqing haiteke Manufacturing Productivity Promotion Center Co. Ltd. Contract record no.: 2010530000023 Denomination of invention: Automatic collection method for mechanical processing task progress state based on machine tool power information Granted publication date: 20081112 License type: Exclusive License Open date: 20071024 Record date: 20100517 |
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