EP3243045A1 - Systeme de detection d'une obtruction partielle ou totale d'au moins une canalisation interne d'un outil - Google Patents

Systeme de detection d'une obtruction partielle ou totale d'au moins une canalisation interne d'un outil

Info

Publication number
EP3243045A1
EP3243045A1 EP16700032.2A EP16700032A EP3243045A1 EP 3243045 A1 EP3243045 A1 EP 3243045A1 EP 16700032 A EP16700032 A EP 16700032A EP 3243045 A1 EP3243045 A1 EP 3243045A1
Authority
EP
European Patent Office
Prior art keywords
pressure
solenoid valve
pneumatic circuit
tool
internal pipe
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.)
Withdrawn
Application number
EP16700032.2A
Other languages
German (de)
English (en)
French (fr)
Inventor
Pierre FAVERJON
Cyrille URVILLE
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.)
Construction D'equipement De Mecanisati Ste
Original Assignee
Institut Vedecom
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 Institut Vedecom filed Critical Institut Vedecom
Publication of EP3243045A1 publication Critical patent/EP3243045A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
    • B23Q11/1053—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using the cutting liquid at specially selected temperatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
    • B23Q11/1023—Tool holders, or tools in general specially adapted for receiving the cutting liquid from the spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1084—Arrangements for cooling or lubricating tools or work specially adapted for being fitted to different kinds of machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0904—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool before or after machining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0904—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool before or after machining
    • B23Q17/0909—Detection of broken tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B23Q17/0985—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/74—Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/30—Compensating imbalance
    • G01M1/36—Compensating imbalance by adjusting position of masses built-in the body to be tested
    • G01M1/365—Compensating imbalance by adjusting position of masses built-in the body to be tested using balancing liquid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N35/1016—Control of the volume dispensed or introduced
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold

Definitions

  • the present invention relates to a system for detecting a partial or total obstruction of an internal pipe of a tool.
  • the invention finds a particularly advantageous, but not exclusive, application for the control of machining tools having one or more internal pipes serving to supply the functional elements of the tool with lubricating or refrigerating fluid, whether liquid or gaseous, such as oil, an emulsion of oil, a mist of air and oil, or other.
  • EP2320199 teaches the implementation of a method for detecting particle agglomerates in a conduit using a flow meter.
  • the system determines sudden rate changes and provides an alarm signal when the flow rate exceeds expected limits.
  • FR2851819 discloses the use of an electrostatic flow meter measuring the amount of aggregate particles of a two-phase flow.
  • the detection elements are arranged in a tubular detection element.
  • control unit configured to open said solenoid valve so as to pressurize said pneumatic circuit
  • the invention makes it possible to guarantee the conformity of the internal pipes of small section. 'a tool. This is particularly important for the tools of micro-lubrication or micropulverisation oil or MQL (for "Minimum Quantity Lubrication" in English) for which the absence of obstruction of the pipes carrying the lubricating fluid conditions effective operation of the corresponding device.
  • the temporal analysis of pressure evolution consists in measuring a duration that said pneumatic circuit to regain the ambient pressure following the closing of said solenoid valve. According to one embodiment, the temporal analysis of pressure evolution consists in measuring a pressure difference between the pressure at the time of closure of said solenoid valve and the pressure at the end of a period beginning to run at from the closing of said solenoid valve.
  • the time evolution analysis of the pressure consists in measuring a time required for said pneumatic circuit to reach a frozen target pressure following the closing of said solenoid valve. [001 1]
  • said frozen target pressure is greater than the ambient pressure and less than the pressure of said pressure source.
  • the temporal analysis of the evolution of the pressure consists in determining a derivative slope of a pressure evolution curve in said pneumatic circuit as a function of time following the closing of said solenoid valve.
  • said system further comprises an electronic chip reader for automatically identifying said tool whose internal pipe is to be controlled.
  • FIG. 1 is a schematic representation of a system for detecting the partial or total obstruction of an internal pipe of a tool according to the present invention
  • FIGS. 2a to 2d illustrate different types of time analysis of the pressure evolution in the pneumatic circuit that can be implemented by the system for detecting partial or total obstruction of the internal pipe of a tool. according to the present invention.
  • Figure 1 shows a system 10 for detecting total or partial obstruction of at least one internal pipe 1 1 of fluid of a tool 12, such as a machining tool.
  • the internal pipe (s) 11 to be inspected may, for example, serve to supply the functional elements of the tool with lubricating fluid, such as oil, an oil emulsion, or a mist consisting of air and water. oil.
  • the system 10 can also be used to control cryogenic machining tools 12 comprising at least one internal pipe 1 1 in which circulates a refrigeration fluid, for example nitrogen-based.
  • the system 10 is preferably used outside of the machining operations performed by the tool 12, that is to say that the tool 12 is disassembled in a first step of the device to which it belongs to be mounted on the system 10 for the purpose of controlling the internal pipe (s) 1 1.
  • the system 10 belongs to a station attached to the production.
  • the system 10 could be integrated in the machining apparatus comprising the tool 12.
  • the system 10 comprises a pneumatic circuit 13 connected upstream of the internal pipe 1 1 of the The tool 12.
  • a pressure source 16 is connected with the pneumatic circuit 13 via a solenoid valve 17.
  • a pressure switch 20 makes it possible to supply the value of the pressure of the fluid inside the pneumatic circuit 13.
  • the system 10 includes an electrical control portion 21 having a control unit 22 in communication with a control interface 25 adapted to control the solenoid valve 17, and with a module 26 for receiving data from of the pressure switch 20.
  • the electrical part 21 may also include an electronic chip reader 29, for example of RFID type (for "Radio Frequency Identification” in English) to automatically identify the tool 12 whose pipe 1 1 is to be controlled.
  • the control unit 22 comprises means, such as a microcontroller 30, for processing and analyzing the collected pressure data, as well as a man-machine interface 31 constituted for example by a screen and a keyboard or a touch screen to allow the operator to interact with the system 10. [0022]
  • the operation of the system 10 for detecting total or partial obstruction of the the pipe 1 1 of the tool 12.
  • control unit 22 controls, via the interface 25, the opening of the solenoid valve 17 so as to pressurize the pneumatic circuit 13.
  • the pressure in the circuit 13 is stabilized at a pressure substantially equal to the pressure Ps of the source 16.
  • control unit 22 controls, via the interface 25, the closing of the solenoid valve 17 so as to allow the circuit 13 to empty freely via the pipe 1 1 to control.
  • the control unit 22 detects the state of obstruction of the pipe 1 1 as a function of the duration that the circuit 13 to regain the ambient pressure Pa following the closing of the solenoid valve 17.
  • the return to the ambient pressure Pa of the pneumatic circuit 13 is fast (see T1 time) in the case of an unobstructed pipe 1 1, as illustrated by the curve C1.
  • the return to ambient pressure Pa is longer (see duration T2) in the case of a pipe 1 1 partly obstructed because the pressure drop slows the flow, as illustrated by the curve C2.
  • the circuit 13 remains under pressure in the case of a pipe 1 1 completely blocked because of the absence of flow, as illustrated by the curve C3.
  • the duration T3 is therefore infinite because of the absence of flow.
  • the control unit 22 detects the total closure of the internal pipe 1 1 when it is detected that the ambient pressure Pa has not been reached after a calibration reference time depending on the application and in particular dimensions of the pipe 1 1 to control.
  • the control unit 22 measures a pressure difference ⁇ between the pressure at the time of closure of the solenoid valve 17 and the pressure at the expiration of a duration Tsec, for example of a few seconds, starting to run from the closure of the solenoid valve 17.
  • this pressure difference is large (see difference ⁇ 1) in the case of an uncapped pipe 1 1, as illustrated by the curve C1.
  • This pressure difference is smaller (see difference ⁇ 2) in the case of a pipe 1 1 partially obstructed, because the pressure drop slows the flow, as illustrated by the curve C2.
  • the pressure difference is zero (see difference ⁇ 3) due to the absence of flow, as illustrated by the curve C3.
  • the control unit 22 measures the time required for the pneumatic circuit 13 to reach a fixed target pressure Pc after closing of the solenoid valve 17.
  • This target pressure Pc is greater than the pressure Pa and less than the pressure Ps of the pressure source 16.
  • the advantage of this embodiment is that it is faster to implement than the embodiment of Figure 2a.
  • the time to reach the target pressure Pc is low (see TV duration) in the case of an uncapped line 1 1, as illustrated by the curve C1.
  • This duration is greater (see duration T2 ') in the case of a pipe 1 1 partially obstructed, because the pressure drop slows the flow, as illustrated by the curve C2.
  • the TV and T2 'times are respectively lower than the T1 and T2 times obtained for identical C1 and C2 curves.
  • the duration will be infinite (see duration T3 ') due to the absence of flow, as illustrated by the curve C3.
  • the control unit 22 detects the total closure of the internal pipe 1 1 when it is detected that the target pressure Pc has not been reached after a calibration reference time depending on the application and in particular dimensions of the pipe 1 1 to control.
  • the control unit 22 determines a derivative slope AP / dt (Ci) of the evolution curve Ci of pressure in the pneumatic circuit 13 as a function of time after the closing of the solenoid valve 17.
  • this slope is high (see slope AP / dt (C1)) in the case of a pipe 1 1 unobstructed , as illustrated by curve C1.
  • This slope is lower (see slope AP / dt (C2)) in the case of a duct 1 1 partially obstructed, because the pressure drop slows the flow, as illustrated by the curve C2.
  • the slope is zero (see slope AP / dt (C3)) due to the absence of flow, as illustrated by the curve C3.
  • the invention is based on the analysis of the time evolution of the pressure in the pneumatic circuit 13 which is proportional to the pressure drop (occlusion) to be detected.
  • the invention thus makes it possible to guarantee the conformity of the internal pipes 1 1 of the tool 12. This is all the more important for the tools of micro-lubrication or micropulverisation of oil or MQL (for "Minimum Quantity Lubrication” in English) for which the absence of obstruction of the pipes 1 1 conveying the lubricating fluid conditions efficient operation of the tool 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Measuring Volume Flow (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Burglar Alarm Systems (AREA)
  • Examining Or Testing Airtightness (AREA)
EP16700032.2A 2015-01-05 2016-01-04 Systeme de detection d'une obtruction partielle ou totale d'au moins une canalisation interne d'un outil Withdrawn EP3243045A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (1)

Publication Number Publication Date
EP3243045A1 true EP3243045A1 (fr) 2017-11-15

Family

ID=52824402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16700032.2A Withdrawn EP3243045A1 (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

Country Status (9)

Country Link
US (1) US10442049B2 (zh)
EP (1) EP3243045A1 (zh)
JP (2) JP7045855B2 (zh)
CN (1) CN107405744B (zh)
FR (1) FR3031388B1 (zh)
RU (1) RU2705760C2 (zh)
TW (1) TWI695751B (zh)
WO (1) WO2016110465A1 (zh)
ZA (1) ZA201705171B (zh)

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Publication number Priority date Publication date Assignee Title
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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Also Published As

Publication number Publication date
CN107405744B (zh) 2020-10-09
TW201637771A (zh) 2016-11-01
JP2018503835A (ja) 2018-02-08
JP7045855B2 (ja) 2022-04-01
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
CN107405744A (zh) 2017-11-28
JP2022028773A (ja) 2022-02-16
FR3031388B1 (fr) 2017-08-04
US10442049B2 (en) 2019-10-15
TWI695751B (zh) 2020-06-11
US20180015583A1 (en) 2018-01-18

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