CN107405744B - 对工具的至少一个内部管道的部分或完全阻塞的检测系统 - Google Patents
对工具的至少一个内部管道的部分或完全阻塞的检测系统 Download PDFInfo
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Abstract
本发明主要涉及一种用于对工具(12)的至少一个内部流体管道(11)的完全或部分阻塞进行检测的检测系统(10),其特征在于,所述系统(10)包括:气动回路(13),所述气动回路用于与所述工具(12)的所述内部管道(11)的上游连接;压力源(16),所述压力源借助于电磁阀(17)与所述气动回路(13)相联;以及控制单元(22),所述控制单元配置用于打开所述电磁阀(17),以便给所述气动回路(13)加压,然后配置用于关闭所述电磁阀(17),以便使所述气动回路(13)借助于所述内部管道(11)自由地排空,以及配置用于根据对于所述气动回路(13)中压力演变的时间性分析来检测所述内部管道(11)的阻塞状态。
Description
本发明要求于2015年1月5日提交的法国申请1550022的优先权,该申请的内容(文本、附图和权利要求)在此以引用的方式并入本文。
技术领域
本发明涉及一种用于对工具的内部管道的部分或完全阻塞进行检测的检测系统。本发明发现了一种特别有利的而不唯一的应用,所述应用用于控制具有一个或多个内部管道的加工工具,所述一个或多个内部管道用于给所述工具的功能元件提供液态或气态的润滑或冷却流体,例如油、油状乳剂、由空气和油构成的雾、或其它。
背景技术
文件EP2320199教导了通过使用流量计来实施一种对于管道中颗粒团进行检测的检测方法。所述系统确定流量的突然变化并且在所述流量超过设计界限时提供报警信号。类似地,文件FR2851819示出了使用静电流量计来测量二相流的集料颗粒的量。所述检测元件配置在管状检测元件中。
然而,在所述工具具有小截面内部管道的情况下,这种系统能够检测管道的完全阻塞,但不能够检测部分阻塞,这是因为泄漏太小而不能被检测出。这是由于标准流量计的测量精度的极限。因此存在检测不到小截面内部管道的部分阻塞,这可能损害所述工具的运行和因此损害生产线的生产率。
此外,文件DE102006052602、DE102007016326、FR2972952描述了能够通过将经测量压力相对于参考压力曲线进行比较来对工具的内部阻塞进行检测的检测方法。然而,这些方法都基于在一些特殊配置中执行的压力测量,这些压力测量不能够获得用于对小截面管道的部分阻塞进行检测的足够的测量精度。
发明内容
本发明旨在通过提供一种用于对工具的内部流体管道的完全或部分阻塞进行检测的检测系统来有效地修正这些缺点,其特征在于,所述系统包括:
气动回路,所述气动回路用于与所述工具的所述内部管道的上游连接,
压力源,所述压力源借助于电磁阀与所述气动回路相联,以及
控制单元,所述控制单元配置用于打开所述电磁阀,以便给所述气动回路加压,
然后配置用于关闭所述电磁阀,以便使所述气动回路借助于所述内部管道自由地排空,以及
配置用于在所述电磁阀关闭之后根据对于所述气动回路中压力演变的时间性分析(analyse temporelle)来检测所述内部管道的阻塞状态。
因此,通过对于气动回路中压力的时间性演变(与要检测的(闭塞)压降(perte decharge)成比例)的分析,本发明能够保证工具的小截面内部管道的合格性。这对于油的微润滑或微喷雾又或MQL(英语“Minimum Quantity Lubrication(最小量润滑)”的缩写)工具尤其重要,对于这些工具,输送润滑流体的管道不存在阻塞这一现象决定了对应装置的有效运动。
根据实施例,对于所述压力演变的时间性分析包括测量所述气动回路在所述电磁阀关闭之后恢复到环境压力所花费的时长。
根据实施例,对于所述压力演变的时间性分析包括测量在所述电磁阀关闭时刻的压力与时长结束时的压力之间的压力差,所述时长从所述电磁阀关闭时起算。
根据实施例,对于所述压力演变的时间性分析包括测量所述气动回路在所述电磁阀关闭之后达到经固定的(figée)目标压力所需的时长。
根据实施例,所述经固定的目标压力大于所述环境压力并且小于所述压力源的压力。
根据实施例,对于所述压力演变的时间性分析包括确定所述气动回路中压力在所述电磁阀关闭之后随时间演变的演变曲线的导数斜率。
根据实施例,所述系统还包括电子芯片读取器以自动地识别具有要控制的管道的所述工具。
附图说明
通过阅读下文中的详细说明和附图,将更好地理解本发明。这些附图仅以非限制性的方式给出,在所述附图中:
图1为根据本发明的用于对工具的内部管道的部分或完全阻塞进行检测的检测系统的示意图;
图2a至图2d示出了不同类型的对于可由根据本发明的用于对工具的内部管道的部分或完全阻塞进行检测的检测系统实施的气动回路中压力演变的时间性分析。
具体实施方式
相同、相似或类似的元件在不同的附图中保持相同的附图标记。
图1示出了用于对工具12(例如加工工具)的至少一个内部流体管道11的完全或部分阻塞进行检测的检测系统10。所述要控制的一个或多个内部管道11可例如用于给所述工具的功能元件提供润滑流体,例如油、油状乳剂或由空气和油构成的雾。所述系统10还可用于控制包括至少一个内部管道11的低温加工工具12,所述至少一个内部管道中流通有冷却流体,例如基于氮气的冷却流体。
优选地在由工具12实施的加工操作之外使用所述系统10,也就是说,工具12在第一时间从该工具所属于的装置移除,从而在所述一个或多个内部管道11的控制结束时装配在系统10上。也就是说,系统10属于所述生产的附属站。然而,作为变型,系统10可集成在包括工具12的加工仪器中。
为此,系统10包括气动回路13,所述气动回路与工具12的内部管道11的上游连接。压力源16借助于电磁阀17与气动回路13相联。压力开关20能够提供占据气动回路13内部的流体的压力值。
此外,系统10包括电气控制部分21,所述电气控制部分具有控制单元22,所述控制单元与能够操控电磁阀17的控制界面25连通,还与接收来自压力开关20的数据的接收模块26连通。电气部分21还可包括例如为RFID(英语“Radio Frequency Identification(无线射频识别)”的缩写)类型的电子芯片读取器29以自动地识别具有要控制的管道11的工具12。控制单元22包括例如为微控制器30的部件,以确保对于所收集的压力数据的处理和分析,以及人机界面31,所述人机界面例如由屏幕和键盘构成或者由触摸屏构成,以使操作人员能够与系统10进行交互。
下文中参照图2a更确切地描述了用于对工具12的管道11的完全或部分阻塞进行检测的检测系统10的运行。
在时刻t0与t1之间,控制单元22经由界面25控制电磁阀17的打开,以便给气动回路13加压。在时刻t1与t2之间,回路13中的压力稳定成某个压力,该压力基本等于所述源16的压力Ps。
从时刻t2起,控制单元22经由界面25控制电磁阀17的闭合,以便使回路13借助于要控制的管道11自由地排空。
控制单元22由此根据所述回路13在所述电磁阀17关闭之后恢复到环境压力Pa所花费的时长来检测管道11的阻塞状态。
因此,在管道11未堵塞的情况下,气动回路13快速地(参见:时长T1)回到环境压力Pa,如曲线C1所示。在管道11部分堵塞的情况下,因为压降减慢了流动,所述回路缓慢地(参见:时长T2)回到环境压力Pa,如曲线C2所示。在管道11完全堵塞的情况下,因为没有流动,所述回路13保持压力,如曲线C3所示。因为没有流动,时长T3无限大。在该情况下,当在参考时限(可根据应用和尤其根据要控制的管道11的尺寸来校准)之后检测出未达到环境压力Pa时,控制单元22检测出内部管道11的完全封阻。
在图2b的实施变型中,在气动回路13中的压力稳定之后,控制单元22测量在电磁阀17关闭时刻的压力与时长Tsec结束时的压力之间的压力差ΔP,所述时长从电磁阀17关闭时起算,例如为几秒。因此,观察到,在管道11未堵塞的情况下,该压力差(参见:压力差ΔP1)较大,如曲线C1所示。在管道11部分堵塞的情况下,因为压降减慢了流动,该压力差(参见:压力差ΔP2)较小,如曲线C2所示。在管道11完全堵塞的情况下,因为没有流动,该压力差(参见:压力差ΔP3)为零,如曲线C3所示。
在图2c的实施变型中,在气动回路13中的压力稳定之后,控制单元22测量气动回路13在电磁阀17关闭之后达到经固定的目标压力Pc所需的时长。该目标压力Pc大于压力Pa并且小于压力源16的压力Ps。该实施例的优点在于,该实施例比图2a的实施例更快地实施。
因此,可观察到,在管道11未堵塞的情况下,用于达到目标压力Pc的时长(参见:时长T1')较小,如曲线C1所示。在管道11部分堵塞的情况下,因为压降减慢了流动,该时长(参见:时长T2')较大,如曲线C2所示。注意到,时长T1'和T2'分别小于由相同的曲线C1和C2获得的时长T1和T2。在管道11完全堵塞的情况下,因为没有流动,所述时长(参见:时长T3')无限大,如曲线C3所示。在该情况下,当在参考时限(可根据应用和尤其根据要控制的管道11的尺寸来校准)之后检测出未达到目标压力Pa时,控制单元22检测出内部管道11的完全堵塞。
在图2d的实施变型中,在气动回路13中的压力稳定之后,控制单元22确定所述气动回路13中压力在所述电磁阀17关闭之后随时间演变的演变曲线Ci的导数斜率ΔP/dt(Ci)。因此,观察到,在管道11未堵塞的情况下,该斜率较大(参见:斜率ΔP/dt(C1)),如曲线C1所示。在管道11部分堵塞的情况下,因为压降减慢了流动,该斜率较小(参见:斜率ΔP/dt(C2)),如曲线C2所示。在管道11完全堵塞的情况下,因为没有流动,该斜率为零(参见:斜率ΔP/dt(C3)),如曲线C3所示。
在所有经考虑的情况下,本发明建立在对于气动回路13中压力的时间性演变(与要检测的(闭塞)压降成比例)的分析的基础上。本发明因此能够保证工具12的内部管道11的合格性。这对于油的微润滑或微喷雾又或MQL(英语“Minimum Quantity Lubrication”的缩写)工具尤其重要,对于这些工具,输送润滑流体的管道11不存在阻塞这一现象决定了工具12的有效运动。
Claims (6)
1.一种用于对工具(12)的至少一个内部流体管道(11)的完全或部分阻塞进行检测的检测系统(10),其特征在于,所述检测系统(10)包括:
气动回路(13),所述气动回路用于与所述工具(12)的所述内部流体管道(11)的上游连接,
压力源(16),所述压力源借助于电磁阀(17)与所述气动回路(13)相联,以及
控制单元(22),所述控制单元配置用于打开所述电磁阀(17)以便给所述气动回路(13)加压,然后关闭所述电磁阀(17)以便使所述气动回路(13)借助于所述内部流体管道(11)自由地排空,以及在关闭所述电磁阀(17)之后根据所述气动回路(13)中的压力演变的时间性分析来检测所述内部流体管道(11)的阻塞状态,所述压力演变的时间性分析包括测量所述气动回路(13)在所述电磁阀(17)关闭之后达到经固定的目标压力(Pc)所需的时长(T1'-T3')。
2.根据权利要求1所述的检测系统,其特征在于,所述压力演变的时间性分析包括测量所述气动回路(13)在所述电磁阀(17)关闭之后恢复到环境压力(Pa)所花费的时长(T1-T3)。
3.根据权利要求1所述的检测系统,其特征在于,所述压力演变的时间性分析包括测量在所述电磁阀(17)关闭时刻的压力与时长(Tsec)结束时的压力之间的压力差(ΔP1-ΔP3),所述时长从所述电磁阀(17)关闭时起算。
4.根据权利要求3所述的检测系统,其特征在于,所述经固定的目标压力(Pc)大于环境压力(Pa)并且小于所述压力源(16)的压力(Ps)。
5.根据权利要求1所述的检测系统,其特征在于,所述压力演变的时间性分析包括确定所述气动回路(13)中压力在所述电磁阀(17)关闭之后随时间演变的演变曲线(C1-C3)的导数斜率(ΔP/dt(C1)-ΔP/dt(C3))。
6.根据权利要求1至5中任一项所述的检测系统,其特征在于,所述系统还包括电子芯片读取器(29)以自动地识别具有要控制的内部流体管道(11)的所述工具(12)。
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FR1550022A FR3031388B1 (fr) | 2015-01-05 | 2015-01-05 | Systeme de detection d'une obtruction partielle ou totale d'au moins une canalisation interne d'un outil |
PCT/EP2016/050026 WO2016110465A1 (fr) | 2015-01-05 | 2016-01-04 | Systeme de detection d'une obtruction partielle ou totale d'au moins une canalisation interne d'un outil |
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US11079402B2 (en) | 2018-03-15 | 2021-08-03 | Hitachi High-Tech Corporation | Automatic analyzing apparatus, and method for detecting flow path clogging of the automatic analyzing apparatus |
US11532474B2 (en) | 2019-08-12 | 2022-12-20 | Applied Materials, Inc. | Deposition of rhenium-containing thin films |
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RU2017127271A (ru) | 2019-02-08 |
RU2705760C2 (ru) | 2019-11-11 |
ZA201705171B (en) | 2018-12-19 |
RU2017127271A3 (zh) | 2019-05-29 |
WO2016110465A1 (fr) | 2016-07-14 |
FR3031388A1 (fr) | 2016-07-08 |
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FR3031388B1 (fr) | 2017-08-04 |
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US20180015583A1 (en) | 2018-01-18 |
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