EP0101360B1 - Installation d'usinage en cinématique continue avec surveillance statistique - Google Patents

Installation d'usinage en cinématique continue avec surveillance statistique Download PDF

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Publication number
EP0101360B1
EP0101360B1 EP83401562A EP83401562A EP0101360B1 EP 0101360 B1 EP0101360 B1 EP 0101360B1 EP 83401562 A EP83401562 A EP 83401562A EP 83401562 A EP83401562 A EP 83401562A EP 0101360 B1 EP0101360 B1 EP 0101360B1
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EP
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Prior art keywords
level
fact
module
unit
control
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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.)
Expired
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EP83401562A
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German (de)
English (en)
French (fr)
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EP0101360A1 (fr
Inventor
Pierre Edelbruck
Bernard Caullet
Georges Melzac
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Manufacture de Machines du Haut Rhin SA MANURHIN
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Manufacture de Machines du Haut Rhin SA MANURHIN
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Priority to AT83401562T priority Critical patent/ATE19558T1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B35/00—Testing or checking of ammunition
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
    • G07C3/14—Quality control systems

Definitions

  • the invention relates to machining installations in continuous kinematics; it applies in particular, but not exclusively, to small arms ammunition production lines.
  • Continuous kinematics means that the parts to be treated move one by one, in continuous sequence, on dimpled wheels and work stations suitably arranged to pass said parts to each other.
  • a cellular wheel takes a part in one of its cells, at a determined point of its rotation. At another point, it transfers the part to another honeycomb wheel, or to a workstation, similarly, a part will leave a workstation by a honeycomb wheel, to go to another workstation or to a receptacle.
  • the essential advantage of continuous kinematics is to increase production rates, while reducing production costs. On the other hand, due to the permanent movement of the parts, there are delicate problems of monitoring the installation, as well as metrology.
  • the logic control means comprise a basic logic device suitable for the functions of acquisition of the measurements, calibration and correction of the measurements as a function of the calibration, in interaction with the control module, as well as a logical operating device, in interaction with the power, work, and control modules, to monitor the entire installation.
  • the operating logic device firstly comprises a first level logic device, which comprises a logic unit for each of the modules, the logic unit associated with the control module being connected to the basic logic device, while being arranged for order the discarded ejection of parts whose measurement is not between said maximum and minimum measurements.
  • the logic operating device comprises a second level logic unit, interconnected with the first level logic units, as well as with a general control console.
  • This second level unit centralizes all of the data available at the installation level, including “product” data sent each time the kinematics continues to progress by one position, this “product” data comprising an identification part. with at least a modulo p number and a modulo q number, the indication of a possible rejection, and of the measurements carried out, which makes it possible to establish in real time and in a simple manner a production statistic.
  • the third level unit is arranged to establish item by item, for each measurement, information of filtered average, filtered standard deviation, count of rejections and percentage of rejections by reasons, as well as to establish, without distinction of item for each measurement, an arithmetic mean, and an arithmetic standard deviation.
  • the third-level unit prefferably keeps a selected number of the last measured values for quick access for each station of choice.
  • the present invention relates to machining installations in continuous kinematics, and more particularly the production lines for small arms ammunition.
  • Figures 1 and 2 show a control module, which is also able to define kinematics continuous parts between an input honeycomb wheel MC11 and an output honeycomb wheel MC14.
  • the wheel MC11 cooperates with the downstream honeycomb wheel MT16 of the working module.
  • at least one control barrel MC12 is provided between the dimpled input wheels MC11 and exit MC14, to allow at least one measurement operation in relation to the aforementioned machining operation which was carried out in the work barrel .
  • the control barrel MC12 which has eight stations cooperates with a measuring member MC13 in a manner which will be detailed below with reference to FIG. 4.
  • the control module has other wheels MC15, MC16 and MC17, which are placed between the output honeycomb wheel MC14 and the honeycomb input wheel MC11.
  • variable qualifiers have been added for “honeycomb wheels”, for example debit honeycomb wheel for the feeder module, upstream and downstream honeycomb wheels for the working module and inlet and outlet honeycomb wheels for the module control.
  • honeycomb wheels for example debit honeycomb wheel for the feeder module, upstream and downstream honeycomb wheels for the working module and inlet and outlet honeycomb wheels for the module control.
  • the feeder module can be produced in the manner described in one of the patent publications FR-A-2,346,072, FR-A-2,356,464, FR-A-2,379,335 or FR- A-2 376 049 already cited.
  • this can for example be one of the machines described in the publications FR-A-2 333 412, FR-A-2 330 476, or also FR-A-2 475 946
  • this machine is a machine for cutting tubular parts such as cartridge cases, this operation, simple, facilitating the description, and this machine could for example be that of publication FR-A-2 333 412.
  • Figure 3 schematically illustrates the structure on a larger scale.
  • the wheel MC11 will therefore take parts from a previous module which is normally a working module. These parts will pass through the control barrel where they are checked in particular at the level of the sensor device MC13. Finally, said parts are taken up by the output honeycomb wheel which will either transfer them to a next module (working or control module), or store them in a storage device.
  • the wheel MC14 also comprises a normal rejection position MC141, a position which is preceded by a special rejection station MC142, and followed by a normal presence test MC140, which makes it possible to ensure that an operation of desired rejection has been carried out, and by the same token of the fact that the documents transferred downstream are accepted.
  • the rejection devices can be produced in the manner described in the publication FR-A-2 379 335 already cited.
  • the locations of the output honeycomb wheel MC14 will come in cooperation with a transfer wheel MC15, followed by another honeycomb transfer wheel MC16, and a third honeycomb transfer wheel MC17 , which is then able to bring the parts back onto the dimpled input wheel MC11.
  • a recycling device with dimpled wheels MC15 to MC17, capable of returning on command the parts of the dimpled output wheel MC14 to the dimpled input wheel MC11.
  • a recycling device with dimpled wheels MC15 to MC17, capable of returning on command the parts of the dimpled output wheel MC14 to the dimpled input wheel MC11.
  • the dimpled input wheel MC11 has a standard insertion location denoted MC110.
  • the insertion of standards can be done for example using a chimney, placed tangentially above the trajectory of the cells, and allowing to release a standard piece so that it comes to fit into the alveolus.
  • FIG. 4 describes in a more particular manner the manner in which the measurement is carried out at the level of the control barrel MC12, of which only one station is shown here.
  • the post in question is placed opposite the sensor device generally denoted MC13 in FIG. 4.
  • the station in question of the MC12 barrel comprises a cast iron support frame, in two pieces 1205 and 1210, resting on the barrel body, which appears in the lower part.
  • the part 1205 is provided with a vertical through bore, through which slides a cylindrical sleeve with recess 1204.
  • the sleeve is provided with an end head 1202, suitable for inserting a cartridge socket 1200 against a support part 1201 Transversally, on either side of the bushing 1200 can be placed projecting gripping members such as 1203.
  • the sliding part 1204 is found in the upper part denoted 1206, and it is then provided with a coupling roller 1207 with a rod 1208 articulated in rotation in 1209 on the frame 1210.
  • the rod 1208 is again articulated in rotation on the roller 1211 of an assembly 1212 and 1213, which form a member capable of urging the left part of the part 1208 to rotate upwards.
  • a cam not shown, will stress the device so that the shaft 1204-1206 goes downwards, and therefore comes to grip the bushing 1200 of which it is necessary to measure under a predetermined force. height, after the cutting operation already mentioned (this when arriving at the right of the MC13 measuring station).
  • the part 1206 is completed in the upper part of a bracket 1220, on which a target 1225, of predetermined shape and careful machining, is fixed in a predetermined manner, preferably a steel disc with rectified parallel faces.
  • the measurement member MC13 comprises a frame 1303, the upper part 1302 of which supports a measurement device 1301 comprising a cylindrical cage of comparable size at the periphery of the target 1225, which cage internally houses a sensor 1300, which will measure its distance from the target 1225.
  • the sensor 1300 is connected by an electrical connection 1305 to the rest of the structure.
  • the position of the target 1225 is mechanically linked to the vertical position of the part 1204, and therefore at the top level of the socket 1200, the bottom level being fixed relative to the frame of the barrel MC12, which is assumed in turn remain in a stable vertical position relative to the body MC13, despite its rotation.
  • the senor 1300 is an eddy current probe, such as the probe sold by the company VIBRO-METER under the designation VIBRAXTQ102.
  • This 1300 probe is connected by cable 1305 to a conditioner box, which can be the one sold by the same company under the designation IQS603.
  • the probe 1300 will measure its distance from the target 1225.
  • the present invention provides a combination of means, some of which have already been described.
  • At least one, preferably two “fixed” on-board targets are provided on the control barrel for each measurement. These targets are mounted like the target 1225, but on a support 1220 which would be integral with the barrel.
  • logic control means generally denoted 500 and 600 in FIG. 5, with their complements 800, 900 and 950.
  • the rest of the operations mainly concern the control module.
  • the following operation consists in inserting at least one minimum standard and one maximum standard in two, preferably consecutive, gaps thus created in the continuous kinematics (manual or automatic operation).
  • the maximum and minimum measurements relating to these standards are acquired in order to define rejection values.
  • the acquisition of the measurements in question involves their transport to the acquisition device 800 which will be described below with reference to FIG. 5.
  • a recycling device as described with reference to FIG. 3, providing that the number of stations of the control barrel MC12 and the number of steps of the recycling device constituted by the wheels MC15 to MC17 be first between them.
  • the MC12 control barrel has 8 stations, while the number of steps of the recycling device is equal to 13. This number of steps is to be calculated taking into account the part of the alveolate output and input wheels which intervenes in the recycling device, as well as the distance at the level of the control barrel between the place of introduction of the parts and the location of their removal. All this comes into play in the definition of the “recycling loop”.
  • a plurality of pairs of standards are preferably provided which are respectively maximum and minimum in each pair, so that a pair of standards corresponds for example to a quantity to be measured.
  • This system firstly comprises a logical operating system generally designated by 500, and which will be described in more detail below with reference to FIG. 11. (In this FIG. 11, we find the general structure of the device 500 to inside the dashed line).
  • This device firstly comprises a digital encoder block or “encoder” connected to one or more incremental encoders generally denoted by CO, and having the function of determining the machine position making it possible to detect the presence of parts at various points in the installation , so that the electronics can at any time determine the position of the parts in the continuous kinematics.
  • each encoder block has three outputs. The first delivers an index to each round of the associated barrel. The second delivers pulses at the rate of 180 per barrel position, in forward gear. The third does the same, but in reverse.
  • each module of the installation is associated with a first level logic block (LEVEL 1).
  • LEVEL 1 first level logic block
  • the power supply module MA is associated with a Level logic block denoted 511
  • the MT work module is associated with a Level 1 logic block denoted 512
  • the control module MC is associated with a Level 1 logic block denoted 513.
  • Block 600 reports the operations it performs, directly to the Level 1513 logic block which is precisely associated with the control module.
  • the various blocks 510 to 513 are in interaction by 8-bit parallel links with a second level logic device (LEVEL II) denoted 520.
  • LEVEL II second level logic device
  • This is preferably associated by an asynchronous link with a general control desk 521 of the installation, which will not be described in more detail here.
  • Level II is optionally associated with a logic block of third Level 530, which can be responsible for example for controlling not only the section of the machining installation which is described here, but all the entire installation, which performs joint operations on the same product.
  • third Level 530 can be responsible for example for controlling not only the section of the machining installation which is described here, but all the entire installation, which performs joint operations on the same product.
  • it is connected to other second level logic blocks by asynchronous serial links illustrated in FIG. 11.
  • This Level III logic block marked 530 performs general surveillance operations which will not be described in more detail in the context of this patent application.
  • This block 600 constitutes a logic measurement unit, or Level 0 unit.
  • the unit 600 dialogues by asynchronous lines with a measurement acquisition unit 800 described in more detail with reference to FIG. 8. Signals are also transmitted by the Level 0 unit 600 to the acquisition unit 800, which also receives analog inputs of measurement signals (for example, 5 analog inputs for 5 sensors therefore at least 5 quantities to be measured , it being observed that the same sensor can successively carry out measurements of a different nature).
  • Level 0 unit 600 also dialogues, still by asynchronous lines, with a calibration unit 900 which is in charge of the calibration operations, and of annex operations.
  • the 900 unit is associated by the bus line 901 with the calibration control console 950.
  • the unit 900 and the console 950 are illustrated in more detail in FIG. 9.
  • FIG. 6 shows the particular structure of the level 0 unit 600.
  • This comprises an internal bus 601, to which a measurement processor 602 is connected, as well as memories 603 and 604.
  • Memory 603 is a memory programmable read-only or pROM, with a capacity of 8 kilobytes, for example, while the memory 604 is a direct access memory or RAM memory, with a capacity of 4 kilobytes.
  • the bus 601 is also connected to the parallel interface 608, having a port A and a port B, responsible respectively for information arriving from the operating system 500, and information which will go towards it.
  • Another parallel interface 609 is provided, as an option, for 16 inputs-outputs available for user-definable purposes.
  • a serial interface 607 is also provided, as well as two time counters 605 and 606.
  • the serial interface 607 is in intercommunication with the bus 601, and has two sets of outputs denoted respectively line A, which goes to the calibration unit of figure 9, and line B which goes to the acquisition unit of figure 8.
  • the clock for line A is defined by the time counter 605, which receives synchronization signals from the encoder device 510.
  • the clock for line B is defined by the time counter 606, which is only connected to the serial interface 607.
  • the level 0 unit of FIG. 6 is capable of receiving all the raw measurement information coming from the acquisition unit 800, as well as to dialogue with the calibration unit 900 and the associated 950 calibration control console.
  • This unit 600 of FIG. 6 will therefore be responsible for establishing the calibration, then then taking it into account on the actual measurements carried out on the products during manufacture.
  • the unit 600 of FIG. 6 will finally be able to report its interventions to the assembly 500 of FIG. 5 and of FIG. 11, at the same time as requesting the latter to carry out the ejection suitable for the parts being manufactured which will not comply with the calibration data, through the first level logic unit 513, to which the device 600 is directly connected.
  • FIGS. 7 and 8 represent the acquisition of the information available at the level of the sensors.
  • FIG. 7 we see at the top left a line which comes from the sensor 1300 of FIG. 4, or more precisely from the signal conditioner which is connected to it.
  • This line is brought through a resistor 8310 to the inverting input of the differential amplifier 831.
  • This inverting inputs is also connected to the output through an adjustable resistor 8311.
  • the non-inverting input of the same amplifier 831 is connected on the one hand to ground through an adjustable resistor 8312, and on the other hand to a resistor 8313 which goes to an inverter 8314.
  • the inverter 8314 When a measurement concerns a single sensor, the inverter 8314 is in the position shown, to connect the non-inverting input of the amplifier 831 to ground. When, on the contrary, a measurement involves two sensors, in differential mode, the second sensor is then connected to the input located at the bottom left of FIG. 7, the inverter 8314 therefore being in the other position.
  • the measurement acquisition processor denoted 802.
  • Memory 803 is a programmable read-only memory or pROM with a capacity of 4 kilobytes
  • memory 804 is a direct access memory or RAM with a capacity of 2 kilobytes.
  • a time counter 806 is also connected to the internal measurement acquisition bus 801, which receives the synchronization signals from the encoder device 510. This time counter 806 defines clock signals for the serial interface 807 which can transmit the quantities. measured to unit 600 in Figure 6.
  • Figure 9 illustrates the two calibration bodies consisting of a central unit and a desk.
  • the internal calibration bus is denoted 901, and is connected (on the right in the unit 900) to a calibration processor 902, associated with three memories 903, 904 and 905.
  • Memory 903 is a programmable read only memory or pROM with a capacity of 10 kilobytes.
  • the memory 904 is a direct access memory or RAM with a capacity of 4 kilobytes.
  • the memory 905 is a direct access memory also RAM, with a capacity of 2 kilobytes, but saved, that is to say capable of retaining the information it contains when the device and the entire installation do not are not in operation. This RAM memory 905 is useful for storing the calibration data even when the machining installation is not working, taking into account the means used according to the present invention.
  • the internal bus 901 is connected (in the right part) to a time counter 906, which defines clock information for the serial interface 907 which is connected on the one hand to the internal calibration bus 901 and on the other hand to the logical measurement unit 600 of FIG. 6.
  • the links with the calibration console include 4 parallel interfaces 951 to 954, responsible respectively for ensuring the connections with the elements of the calibration console; Before examining these connections, the calibration console will be described with reference to Figure 10.
  • buttons which are noted 971 to 981, and allow you to define a certain number of status information for the machining installation (see below). Each button is associated with an indicator light which indicates whether the state in question is validated or not. All these buttons are managed via the parallel interface 951.
  • the calibration console also includes a keyboard 962, as well as switches 961, 963, 964 and 965.
  • the keyboard and these switches are managed through the parallel interface 952 in FIG. 9.
  • the calibration console includes a display block 995 for the displayed measurement data, as well as a display block 996 for indicating the extension number concerned by the display. These two digital displays are managed through the parallel interface 954 in FIG. 9.
  • the 961 key is a calibration key. In the OFF position, it prohibits calibration and any modification of the data relating to it. In the EN position, it authorizes the passage to calibration. If during a calibration the key is returned to the OFF position, the calibration is instantly stopped.
  • the rotary measurement selector 965 allows you to choose the dimension to be measured, from among those provided, and there are a maximum of 5. This selector is associated with the keys 979 (ON-BOARD STANDARD), 976 (MAX / MIN LIMIT), 978 (POST SIDE), 977 (DERIVATIVE), 975 (POST CORRECTION) and 974 (STANDARD DIMENSIONS).
  • data visualization is associated with the switch 963, which indicates whether one chooses to display the minimum or maximum data, as well as the key 981, which requests a MODIFICATION OF VALUE.
  • Table 1 below gives the combined actions allowed (YES) or prohibited (NO) on different keys and depending on the "calibration” or “production” status.
  • Key 973 constitutes a switch for passing from measurements in millimeters to measurements in internal units, that is to say to the raw digital values obtained by converting the output voltages of the conditioners of the sensors. In production, this switch has no action, since it is coupled to the development commands (not shown, and intended for maintenance).
  • the value modification key 981 allows you to start entering a new value using the keyboard 962.
  • the clear key (EFF) on the keyboard allows you to erase the last number entered.
  • the validation key (VAL) on the keyboard must be pressed to take into account the number entered by the electronic circuits, in which case the erase key no longer acts.
  • the station selection keys (vertical arrows) of the keyboard 962 make it possible to increment or decrement the station numbers, in association with the display keys illustrated in table 1 above.
  • Switch 963 is associated with keys 974 (CALIBRATION SIDE), 976 (MAX / MIN LIMIT), and 979 (ON-BOARD CALIBRATION) and 977 (DRIFT).
  • switch 964 turns on all the LEDs on the display panel. Otherwise, the operator immediately identifies the faulty diodes. And the SIGN (-) key on the keyboard is to be used to modify the corrections.
  • FIG. 12 illustrates by way of example the diagram of one of the LEVEL 1 units, which are denoted 511 to 513 in FIG. 11.
  • Each unit comprises, around an internal bus 505, a central processing unit 501, a program memory 502 (PROM, 8 kilobytes) and a working memory 503 (RAM, 8 kilobytes).
  • PROM program memory
  • RAM working memory
  • parallel interfaces 504A and 504B in addition, optional 507, which go, through an optically isolated coupling, to the module concerned.
  • a time counter 506 and a parallel interface such as 508 are provided, in communication via a homologous interface such as 524, with the LEVEL II system control bus, noted 525. (For hardware reasons, the interface 524 is installed on the same card as its associated interface 508 of LEVEL 1).
  • FIG. 13 illustrates the LEVEL II diagram.
  • the heart of the LEVEL It is the central processing unit 520, associated with a program memory 522 (PROM, 10 kilobytes) and a working memory 523 (RAM 6 kilobytes).
  • PROM program memory
  • RAM working memory
  • Two time counters 527A and 527B are also provided, as well as, preferably, two additional parallel interfaces 526A and 526B.
  • bus 525 is connected through a serial interface 528, by asynchronous lines, on the one hand to the control console 521, and on the other hand to the logic unit of LEVEL III 530.
  • the members 900 and 950 of FIG. 5 are denoted in abbreviation "calibration”.
  • Organ 800 is denoted “acquisition”.
  • the logical measurement unit 600 is denoted “LEVEL 0”.
  • the elements 511 to 513 of FIG. 11 are generally noted “LEVEL I”.
  • the Level 0 electronics receives, each time the machine advances by one step, the result of the measurements carried out by the acquisition card, i.e. a block of 5 data, in internal units, which represents the values ratings of the product present.
  • the result of the measurements carried out by the acquisition card i.e. a block of 5 data
  • internal units which represents the values ratings of the product present.
  • To these dimensions can be added one or two additional, which are the dimensions in internal units of the fixed targets on board. For certain positions of the machine, these values can naturally be absent, since it is not always necessary to provide two fixed targets on board for each control station.
  • Level 0 communications with the calibration unit consist in communicating to it the raw data coming from the acquisition unit.
  • Level 0 of the electronics can also transmit Raw data to the Level, but in internal units, since the corrections and conversion coefficients already mentioned are not yet known.
  • Level 0 In production phase, Level 0 essentially has the function of using the synchronization signals, in particular those which come from the encoder card 510 of FIG. 11, to assign to each of the 5 data coming from the acquisition unit the extension number on which the measurement took place, and the identity of the product concerned. Regarding the values of fixed on-board targets, Level 0 achieves a sliding average per target over the last 16 values (for example). These are the 5 raw measurements and the uncorrected moving averages and in internal unit which are therefore transmitted to the calibration unit.
  • the calibration unit communicates the new conversion coefficients so as to take account of the slightest variations and drifts in the machine.
  • the Level 0 unit now knows the values converted to microns of the measurements, and can sort them using the rejection ratings in micron issued at the end of calibration or at the start of production. The validity of the ratings is checked by simple comparison with the two limit values. All this converted data is transferred in microns to Level 1, assigned an indicator giving the result of the odds check, namely GOOD, above the maximum, or below the minimum.
  • Level 1 for each of the elements of the machine, namely for the control module, as well as for the work module and the power module.
  • the information which has just been indicated is in fact used by the level unit 1513 to trigger the ejection of the product if a rejection is necessary. This ejection could for example be done at the level of the normal rejection station noted MC141 in FIG. 3.
  • the devices of the present invention allow physical control of parts in production. To this end, it is possible to verify in particular the operation of the control module, by introducing one or more standard pieces on the fly at the level of the station MC110 in FIG. 3, and by controlling the display of the dimensions of these standards in the appropriate manner using the console 650. The standards will then not need to go through the recycling loop, and may come out through the special rejection MC142.
  • the feed and machining modules can create parts rejects by themselves (incorrect part position, for example). But most of the releases take place on a control module, as previously described.
  • LEVEL (S) II All the corresponding information passes through LEVEL (S) II, where it is formatted to be centralized by LEVEL III.
  • Exchanges between LEVEL (X) II and LEVEL III are done by asynchronous lines in full duplex (full duplex), at a speed of 9600 bits / second, and in an 11 bit format: 1 bit start, 8 bits data , 2 stop bits.
  • any exchange consists of a set of 3 blocks:
  • a block of this type is issued by Level II each time the machine advances from one position.
  • the data describes the state of the outgoing position, which can be empty or filled with a product.
  • the block consists of two separate parts: a fixed part, whose structure does not depend on the machine and a variable part describing the product.
  • rejection code examples are given below:
  • variable part of the data depends on the type of machine, but not on the state of the position. (It even exists when there is no product).
  • LEVEL III thus has complete information on installation operations.
  • Level III receives a Level II data block each time the machine advances from one position.
  • the data describes the state of the outgoing position which can be empty or full. The full details of this data block have been given above.
  • Level III calculates production yields, rejection rates, tool wear curves, in particular. By means of display screens and printers, it can view and edit the results at any time at the operator's request.
  • Level III performs the following accounts:
  • Level III ensures the acquisition and backup after processing of all data from machines via Level II.
  • data metrological data and events.
  • Level III receives a data block in which all the characteristics of the position exiting the machine are recorded: workstation and control number, values of measured dimensions that the product is good or not and in the latter case, the reason for rejection.
  • the arithmetic means and standard deviations are calculated for each dimension, all positions combined, to further characterize a batch of parts.
  • the filtered means and standard deviations are evaluated item by item for each rating.
  • the application of filtering has the advantage of involving time in the calculations in such a way that each sample is assigned a weighting coefficient, this is maximum for the most recent value and decreases up to the oldest value.
  • This means is very useful for carrying out precise monitoring of each of the positions, because any anomaly can be detected very quickly, which makes it possible to trigger the safety devices as soon as possible.
  • Level III In the case where the position exiting the machine is empty, the data block received by Level III contains the reason for the absence of the socket: either there was no power supply at the input of the machine, or the product was rejected during an inspection; in all cases Level III can determine the module that rejected the product and the exact reason for the rejection.
  • a sudden fault on a station can be detected very quickly. (The required reaction speed cannot be achieved even by filtered average monitoring). Also, the system monitors the rejection sequences on each station. Appropriate action is taken if a predetermined number of consecutive releases is exceeded.
  • the user In order to detect progressive wear of the tools, the user has the possibility of defining a set of limit dimensions, internal to the discharge dimensions used by the control modules. It is thus possible for the system to intervene and provide for operator intervention.
  • Level III can be: alarm only on display console, alarm plus inhibition of station or alarm plus machine stop.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Factory Administration (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Volume Flow (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Numerical Control (AREA)
EP83401562A 1982-08-12 1983-07-28 Installation d'usinage en cinématique continue avec surveillance statistique Expired EP0101360B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401562T ATE19558T1 (de) 1982-08-12 1983-07-28 Bearbeitungsvorrichtung bei kontinuierlichem bewegungsablauf mit statistischer ueberwachung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8214047 1982-08-12
FR8214047A FR2531651B1 (enrdf_load_stackoverflow) 1982-08-12 1982-08-12

Publications (2)

Publication Number Publication Date
EP0101360A1 EP0101360A1 (fr) 1984-02-22
EP0101360B1 true EP0101360B1 (fr) 1986-04-30

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EP83401562A Expired EP0101360B1 (fr) 1982-08-12 1983-07-28 Installation d'usinage en cinématique continue avec surveillance statistique

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US (1) US4589554A (enrdf_load_stackoverflow)
EP (1) EP0101360B1 (enrdf_load_stackoverflow)
AT (1) ATE19558T1 (enrdf_load_stackoverflow)
DE (1) DE3363277D1 (enrdf_load_stackoverflow)
FR (1) FR2531651B1 (enrdf_load_stackoverflow)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158192B1 (de) * 1984-03-31 1991-06-05 B a r m a g AG Verfahren zur zentralen Erfassung von Messwerten einer Vielzahl von Messstellen
US4923066A (en) * 1987-10-08 1990-05-08 Elor Optronics Ltd. Small arms ammunition inspection system
US6812238B1 (en) 1999-11-02 2004-11-02 Basilea Pharmaceutica Ag N-substituted carbamoyloxyalkyl-azolium derivatives
US20040158353A1 (en) * 2000-05-30 2004-08-12 Poterek Michael G. Inspection equipment integrity enhancement system
US6687638B2 (en) * 2001-08-10 2004-02-03 General Hills, Inc. Inspection equipment integrity enhancement system
US20050010546A1 (en) * 2003-07-07 2005-01-13 Siverion, Inc. System and method for determining product specification limits
KR101306947B1 (ko) * 2013-05-10 2013-09-09 안형복 탄피 검사장치

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US3074264A (en) * 1960-04-27 1963-01-22 Sheffield Corp Gaging device
DE1473782B2 (de) * 1965-04-22 1971-12-23 Censor Patent u Versuchsanstalt, Vaduz Laengenmess und sortiergeraet
DE2239979A1 (de) * 1972-08-14 1973-03-15 Werkzeugmasch Okt Veb System zur serienmaessigen fertigung von insbesondere zahnradfoermigen werkstuecken
JPS5628650B2 (enrdf_load_stackoverflow) * 1973-06-18 1981-07-03
US4155116A (en) * 1978-01-04 1979-05-15 The Bendix Corporation Digital control system including built in test equipment
FR2459196A1 (fr) * 1979-06-19 1981-01-09 Haut Rhin Sa Manuf Machines Appareil d'alimentation reguliere en pieces pour une machine de traitement en continu de ces pieces
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FR2463081A1 (fr) * 1979-08-10 1981-02-20 Haut Rhin Sa Manufactur Machin Machine de traitement de pieces avec recyclage repete des pieces sur un barillet operatoire
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US4397021A (en) * 1981-06-15 1983-08-02 Westinghouse Electric Corp. Multi-processor automatic test system

Also Published As

Publication number Publication date
ATE19558T1 (de) 1986-05-15
FR2531651A1 (enrdf_load_stackoverflow) 1984-02-17
US4589554A (en) 1986-05-20
FR2531651B1 (enrdf_load_stackoverflow) 1985-05-24
DE3363277D1 (en) 1986-06-05
EP0101360A1 (fr) 1984-02-22

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