EP3523091B1 - Verfahren und vorrichtung zur ermittlung eines betriebszustands einer strahlanlage - Google Patents

Verfahren und vorrichtung zur ermittlung eines betriebszustands einer strahlanlage Download PDF

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Publication number
EP3523091B1
EP3523091B1 EP17772684.1A EP17772684A EP3523091B1 EP 3523091 B1 EP3523091 B1 EP 3523091B1 EP 17772684 A EP17772684 A EP 17772684A EP 3523091 B1 EP3523091 B1 EP 3523091B1
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EP
European Patent Office
Prior art keywords
blasting
bunker
measuring
weight
main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17772684.1A
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German (de)
English (en)
French (fr)
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EP3523091A1 (de
Inventor
Timo Winkler
Joachim Vianden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eisenwerk Wuerth GmbH
Original Assignee
Eisenwerk Wuerth GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eisenwerk Wuerth GmbH filed Critical Eisenwerk Wuerth GmbH
Priority to EP20200330.7A priority Critical patent/EP3792002A1/de
Priority to PL17772684T priority patent/PL3523091T3/pl
Publication of EP3523091A1 publication Critical patent/EP3523091A1/de
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Publication of EP3523091B1 publication Critical patent/EP3523091B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0092—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed by mechanical means, e.g. by screw conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material

Definitions

  • the invention relates to a method and a device for determining an operating state of a blasting system for treating a surface of a workpiece with a blasting agent.
  • a method according to the preamble of claim 1 and such an apparatus according to the preamble of claim 10 are from document DE 3131002 A1 famous.
  • the DE 20 2016 100 542 U1 discloses a system for the timely provision of treatment agent, in particular granular blasting agent.
  • a bunker for receiving blasting agent is provided with a weight measuring device.
  • the treatment agent is manually replenished in the bunker. In this way, an undesired forced interruption of jet operation due to an insufficient quantity of treatment agent can be avoided.
  • the DE 31 31 002 A1 describes an automatic pressure blasting system with precise and reproducible dosing of the blasting agent.
  • the pressure blasting system includes two main bunkers, each with a minimum and a maximum fill level switch, which, when a minimum fill level is detected, causes automatic refilling from a refill bunker until the maximum fill level is reached.
  • the DE 10 2015 000 632 A1 discloses a method for operating a particle beam system and a particle beam system.
  • the throughput of the blasting agent is measured during operation using an inductive measuring device. From the WO 2014/040125 A1 an inductive level measurement in blasting systems is known.
  • the EP 0 456 502 A1 discloses a device for detecting a radiance or intensity in a blasting process. The measurement is based on the detection of sound waves.
  • the DE 103 32 713 B3 relates to a beam intensity measuring device for surface treatment facilities.
  • the beam intensity measuring device comprises an impulse sensor for measuring the impulse generated by the beam of blasting agent.
  • blasting media with a specific predetermined grain size distribution are used in state-of-the-art blasting systems.
  • the blasting agent is thrown against a surface of the workpiece to be treated by means of a blasting agent acceleration device, for example a turbine wheel or the like.
  • the blasting abrasive is then returned to the main bunker and is thus ready for further surface treatment.
  • the proportion of fines in the grain size distribution of the blasting agent increases over time.
  • the fines are removed from the blasting medium by means of air classification.
  • new blasting media is added to the blasting media.
  • the new blasting agent is usually fed from a pre-bunker to the main bunker when the fill level in a main bunker falls below a minimum level.
  • the pre-bunker is then usually refilled manually.
  • blasting agent In the case of blasting systems according to the prior art, the consumption of blasting agent is usually determined or estimated empirically, depending on the surface to be treated. The efficiency of a blasting system is not determined according to the state of the art.
  • the object of the invention is to eliminate the disadvantages of the prior art.
  • a method and a device are to be specified which make it simple and easy to determine an operating state of a blasting system enable quickly.
  • a possibility should also be provided with which the efficiency of the blasting system can be determined.
  • blasting agent is understood to mean a material consisting of grains which has a predetermined grain size distribution in the delivery or initial state.
  • the grains can be formed from different materials, for example metal, ceramic, glass or the like.
  • a “blasting agent acceleration device” is understood to mean a device with which the blasting agent is accelerated, in particular in the direction of the surface to be treated. This can be, for example, a turbine wheel, an accelerated gas flow or the like.
  • the term “actual blasting duration” is understood to mean a period of time during which the blasting agent hits the surface to be treated with a predetermined minimum impulse.
  • the minimum impulse can be recorded indirectly through the power consumption of the blasting agent acceleration device. i.e. the blasting duration corresponds to the duration during which the blasting agent acceleration device works properly and is properly exposed to blasting agent.
  • idling operation must be distinguished, for example, during which the blasting agent acceleration device is driven but not supplied with blasting agent.
  • the power consumption of the blasting agent acceleration device can also be recorded indirectly by measuring a total power consumption of the blasting system. On the basis of a measurement of the total power consumption, the overall efficiency of the blasting system can also be determined.
  • beam duration time interval means a time interval from the measured actual beam duration.
  • the beam duration time interval can freely to be determined.
  • a duration of 24 hours is usually selected as the beam duration time interval.
  • a "specific point in time” is understood to mean a predetermined selected point in time. It can be, for example, the full hour in each case.
  • a mean value is formed retrospectively from the total weight of blasting agent metered during the predetermined blasting duration time interval up to the specific point in time.
  • the predetermined blast duration time interval is preferably in the range between 6 and 48 hours, in particular 12 to 36 hours, particularly preferably 24 hours. i.e. For example, a total weight of subsequent blasting agent is determined for a specific point in time "8 o'clock" during a blasting time interval of 24 hours that has elapsed up to that point.
  • the step "determining the mean consumption of blasting agent” is then repeated for the subsequent further specific points in time. i.e. the mean consumption of blasting agent is determined, for example, for the specific points in time "8 o'clock", “9 o'clock”, etc.
  • the mean consumption of abrasive is an objective measure of the efficiency of the blasting system.
  • a blasting system can be optimized using the average consumption of blasting media. The optimization can be done, for example, by selecting a blasting agent with a different grain size distribution, a different geometry of a blasting agent acceleration device and/or a different specified performance for the operation of the blasting agent acceleration device can be achieved. Apart from that, the consumption of blasting agent can now be recorded exactly. This enables timely and sufficient storage of blasting media at all times.
  • a duration of n*12 hours is advantageously chosen as the beam duration time interval, where n is a natural number. i.e. durations of, for example, 12, 24, 36, . . . hours are selected as the beam duration time interval.
  • the quotient is advantageously formed from the total weight of blasting agent metered in the predetermined blasting duration time interval and the duration of the predetermined blasting duration time interval.
  • Average abrasive consumption: 24 kg / 24 h 1 kg/h
  • the fill level in the main bunker is continuously measured by means of an inductive fill level measuring device.
  • inductive measuring devices are generally known in the prior art.
  • an outlet opening is automatically opened for a predetermined period of time for replenishment at the pre-bunker.
  • a slide can be provided at the outlet opening, which can be opened and closed, for example, electrically or pneumatically.
  • the proposed replenishment at intervals is robust and unaffected.
  • a difference is formed between a first weight of the preliminary bunker together with the blasting medium contained therein before the subsequent dosing and a second weight of the preliminary bunker together with the remaining blasting medium after the subsequent dosing, in order to measure the weights of blasting agent that have been replenished in each case.
  • the second weight is expediently measured immediately after the outlet opening has been closed.
  • the second weight is compared to the previously measured first weight, which was determined before the outlet opening was opened.
  • the difference between the first and the second weight results in a third weight of the blasting medium that is replenished at intervals.
  • the proposed difference measurement between the first and the second weight is robust and insensitive. It can be done, for example, by pressure cells, on which the preliminary bunker is at least partially supported.
  • the third weights can be summed over the beam duration time interval. From the sum of the third weights, the replenished total weight of blasting agent during the blasting time interval can be determined.
  • the third weights of replenished blasting agent are summed up over time, the respective sum is compared with a further quantity or weight in storage and when a predetermined minimum quantity or a minimum weight of blasting agent in storage is reached Remote data transmission causes a subsequent delivery of blasting media. This ensures that a sufficient supply of blasting agent is available at all times. An undesired standstill of the blasting system due to insufficient storage of blasting media is avoided.
  • those time sections are summed up in which the power consumption is greater than a predetermined limit value.
  • the predetermined limit is advantageously chosen so that he to a predetermined optimal operating state Corresponds to blasting material acceleration device. Falling below the specified limit value indicates that, for example, the blasting agent acceleration device is worn out, not enough blasting agent has been replenished, or a grain size composition of the blasting agent has changed in an undesirable manner.
  • you can react quickly and restore the desired operating status. A specified quality of the surface of the workpieces to be treated can thus be ensured. Waste is avoided.
  • the device can also include a device for measuring a current consumption of the blasting agent acceleration device and/or the blasting system, which is or can be connected to the data processing device for signal transmission.
  • the measurement of the power consumption of the blasting agent acceleration device and/or the blasting system enables an energetic evaluation of the efficiency of the blasting system. For example, it can be specified what total amount of current is required to treat a given surface, number of pieces or a given weight of workpieces.
  • the abrasive consumption can be specified in relation to the weight or the surface of the treated workpieces.
  • the device can include a device for measuring the weight of the preliminary bunker, which is connected or can be connected to the data processing device for signal transmission.
  • the device can also include a pre-bunker, which is provided with the device for measuring the weight.
  • the device can include a fill level measuring device for measuring the fill level of the main bunker.
  • the filling level measuring device can be connected or can be connected to the data processing device for signal transmission.
  • the data processing device can be connected or can be connected via the Internet to at least one other data processing device for remote data transmission.
  • the additional data processing device can be a mobile phone, a terminal at a blasting agent supplier or the like.
  • blasting system is generally denoted by the reference numeral 1, a blasting device, in which a blasting agent acceleration device 2, z. B. a turbine, for accelerating blasting agent 3 onto a surface of a workpiece 4 indicated schematically here.
  • a blasting agent acceleration device 2 z. B. a turbine, for accelerating blasting agent 3 onto a surface of a workpiece 4 indicated schematically here.
  • a pre-bunker generally designated by the reference numeral 9, which is provided with a second slide 10.
  • the second slide 10 can be selectively opened and closed, so that blasting agent 3 can be fed from the preliminary bunker 9 to the main bunker 5 at intervals, in particular via the return device 8 .
  • the blasting agent 3 can be replenished at intervals automatically depending on the fill level in the main bunker 5 .
  • the preliminary bunker 9 is supported against a substrate U via pressure cells 11 .
  • a data processing device is indicated schematically by reference number 12 .
  • the data processing device 12 is connected via a first signal line 13 to the blasting agent acceleration device 2 , via a second signal line 14 to the filling level measuring device 6 and via a third signal line 15 to the pressure cells 11 .
  • the reference number 16 designates a switch with which an open or closed state of the cover 17 of the pre-bunker 9 is detected.
  • the switch 16 is connected to the data processing device 12 via a fourth signal line 18 .
  • Reference number 19 designates a fifth signal line, via which signals or data can be transmitted from the controller 12 to the second slider 10 for closing and opening the same.
  • Signals or data are supplied via the first signal line 13 which correspond to the power consumption of the blasting agent acceleration device 2 .
  • Signals or data are transmitted via the second signal line 14 which correspond to the fill level of the blasting medium 3 in the main bunker 5 .
  • Signals or data which correspond to the weight of the preliminary bunker 9 are transmitted via the third signal line 15 .
  • Signals or data are transmitted via the fourth signal line 18 which indicate whether the cover 17 is open or closed.
  • the total power consumption also includes, in particular, the power required to transport the blasting agent 3 by means of the return device.
  • the return device 8 includes, for example, a bucket elevator.
  • the function of the device and the process that can be carried out with it is as follows: With the blasting agent acceleration device 2, blasting agent 3 is thrown against the surface of a workpiece 4, as a result of which the surface is removed. As a result, a fine grain fraction forms in the blasting agent 3, which is unsuitable for blasting the surface of the workpiece 4. The fine grain fraction is removed from the blasting medium 3 by means of a conventional air classification.
  • the appropriately prepared blasting medium 3 is returned from the blasting device 1 to the main bunker 5 by the return device 8 .
  • the fill level of blasting agent 3 is continuously measured by means of the fill level measuring device 6 .
  • the corresponding measured values are supplied to the data processing device 12 via the second signal line 14 .
  • the second slide 10 on the pre-bunker 9 is opened for a predetermined period of time.
  • new blasting medium 3 is fed to the main bunker 5 at intervals via the return device 8 .
  • a first weight of the preliminary bunker 9 together with the blasting agent 3 contained therein is measured by means of the pressure cells 11.
  • the first weight is stored in the data processing device 12 .
  • a second weight of the preliminary bunker 9 together with the blasting agent 3 still remaining therein is measured.
  • a third weight results from the difference between the first weight and the second weight, which corresponds to the amount of blasting agent 3 that has been replenished.
  • the weight of replenished blasting agent 3 or the amount resulting therefrom is recorded over time by the data processing device 12 (see FIG 2 ). Furthermore, the power consumption of the blasting material acceleration device 2 over time is recorded with the data processing device 12 via the first signal line 13 (see FIG 3 ).
  • a limit value is expediently specified with regard to the power consumption. If the power consumption is above the limit value, the blasting agent acceleration device 2 is properly loaded with blasting agent 3 . The blasting agent acceleration device 2 is in “blasting mode” above the limit value. If the current consumption falls below the limit value, this indicates improper operation of the blasting agent acceleration device 2 or that it is idling. Improper operation can be caused, for example, by worn turbine blades, bearing damage or the like. An idle state can be caused, for example, by an interruption in conveying in the return device 8 .
  • an alarm signal is advantageously triggered by means of the data processing device 12 .
  • the power consumption of the blasting agent acceleration device 2 is recorded over time by the data processing device 12 .
  • the data processing device 12 Advantageously, only those are used to determine the actual beam duration Sums up the time intervals at which the current consumption is above the limit value.
  • the average abrasive consumption for the specific time 08:30 a.m. is 20 kg/h.
  • the grain size distribution of the blasting agent 3 a pulse transmitted from the blasting agent acceleration device 2 to the blasting agent 3, etc. can be varied. Furthermore, depending on the workpiece 4 to be machined, optimal beam powers determined beforehand can be set from the outset.
  • the switch 16 is used to monitor whether the cover 17 is open or closed.
  • the second slide 10 is automatically blocked, i.e. as long as the cover 17 is open, there is no replenishment of blasting agent 3 from the preliminary bunker 9 into the return device 8. This prevents the weight being measured when the preliminary bunker 9 is refilled replenished blasting agent 3 is falsified.
  • the switch 16 or the cover 17 is closed, on the other hand, automatic replenishment of blasting agent 3 is possible, as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
EP17772684.1A 2016-10-04 2017-09-21 Verfahren und vorrichtung zur ermittlung eines betriebszustands einer strahlanlage Active EP3523091B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20200330.7A EP3792002A1 (de) 2016-10-04 2017-09-21 Vorrichtung zur ermittlung eines betriebszustands einer strahlanlage
PL17772684T PL3523091T3 (pl) 2016-10-04 2017-09-21 Sposób i przyrząd do wyznaczania stanu eksploatacyjnego układu strumieniowego

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016219215 2016-10-04
DE102016223190.1A DE102016223190B3 (de) 2016-10-04 2016-11-23 Verfahren und Vorrichtung zur Ermittlung eines Betriebszustands einer Strahlanlage
PCT/EP2017/073843 WO2018065220A1 (de) 2016-10-04 2017-09-21 Verfahren und vorrichtung zur ermittlung eines betriebszustands einer strahlanlage

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP20200330.7A Division-Into EP3792002A1 (de) 2016-10-04 2017-09-21 Vorrichtung zur ermittlung eines betriebszustands einer strahlanlage
EP20200330.7A Division EP3792002A1 (de) 2016-10-04 2017-09-21 Vorrichtung zur ermittlung eines betriebszustands einer strahlanlage

Publications (2)

Publication Number Publication Date
EP3523091A1 EP3523091A1 (de) 2019-08-14
EP3523091B1 true EP3523091B1 (de) 2022-02-23

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Family Applications (2)

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EP17772684.1A Active EP3523091B1 (de) 2016-10-04 2017-09-21 Verfahren und vorrichtung zur ermittlung eines betriebszustands einer strahlanlage
EP20200330.7A Withdrawn EP3792002A1 (de) 2016-10-04 2017-09-21 Vorrichtung zur ermittlung eines betriebszustands einer strahlanlage

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EP20200330.7A Withdrawn EP3792002A1 (de) 2016-10-04 2017-09-21 Vorrichtung zur ermittlung eines betriebszustands einer strahlanlage

Country Status (6)

Country Link
EP (2) EP3523091B1 (pl)
DE (2) DE102016223190B3 (pl)
DK (1) DK3523091T3 (pl)
ES (1) ES2913060T3 (pl)
PL (1) PL3523091T3 (pl)
WO (1) WO2018065220A1 (pl)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021101036A1 (de) 2021-01-19 2022-07-21 Eisenwerk Würth GmbH Vorrichtung zum Behandeln einer Oberfläche eines Werkstücks mit einem Strahlmittel
DE102021115034A1 (de) 2021-06-10 2022-12-15 Rösler Holding Gmbh Verfahren zum Betrieb einer Strahlanlage
DE102021132554A1 (de) * 2021-12-09 2023-06-15 Rösler Holding Gmbh System und Verfahren zur Ermittlung eines Verschleißzustandes eines Schleuderrads
JP2024095867A (ja) * 2022-12-29 2024-07-11 新東工業株式会社 ショットブラスト装置、制御方法、制御プログラム
CN119328678A (zh) * 2024-11-25 2025-01-21 西安理工大学 包含加工过程监测的喷丸加工装置及方法

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Also Published As

Publication number Publication date
ES2913060T3 (es) 2022-05-31
DK3523091T3 (da) 2022-04-19
PL3523091T3 (pl) 2022-06-20
EP3792002A1 (de) 2021-03-17
WO2018065220A1 (de) 2018-04-12
DE202017105608U1 (de) 2017-11-15
DE102016223190B3 (de) 2017-10-19
EP3523091A1 (de) 2019-08-14

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