Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
  • B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by expanding or crimping
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
  • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
  • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses

Definitions

• the invention relates to a hydraulic or pneumatic assembly device with electronic microprocessor control for the preparatory production or pre-assembly of pipe or hose connections, with a hydraulic or pneumatic drive unit, a function display and a hydraulic or pneumatic piston with a tool holder device for insertion different tools, the tools being selectable according to the dimensions and the material of the workpieces to be machined, and the device parameters of the tools, to which particular workpieces to be machined are assigned, can be scanned or read electromagnetically or optically and fed to the microprocessor controller of the assembly device.
• Such a cutting ring serves as a metallic, sealing element in pipe screw connections, and an elastomer can also act as a sealing component.
• the cutting rings are preferably pre-assembled with the aid of a pre-assembly body, the inner contour of which should correspond to the inner contour of the finished assembly body used later, so that less assembly work is required for the final assembly at the place of use after insertion into the finished assembly body be performed uss.
• the axial force exerted during final assembly should, in particular, lead to the outer cone surface of the cutting ring being firmly seated on all sides against the inner cone surface of the screw connection and cutting completely and positively in the cutting area.
• a hydraulic device for preassembling a cutting ring or wedge ring of a pipe fitting is known.
• the cutting ring or the wedge ring is pressed by an axial force acting on it into an inner cone of a pre-assembly body, whereby at least one edge of the cutting ring or wedge ring cuts into the outside of the tube and the tube is supported on a stop in the pre-assembly body.
• the distance that the cutting ring is forced to travel due to the axial force exerted on it is measured and compared with tolerance values which have previously been entered into the device in order to control and monitor the working process.
• a corresponding comparison is also made with regard to the pressure values exerted on the workpiece with the aid of an integrated pressure sensor.
• errors occur, for example due to the inadvertent insertion of incorrect workpieces or tools that are oversized or undersized compared to the tolerance tables entered, the errors are recognized, but only after the work process has already started, so that the workpieces are closed are discarded. This prevents a faulty workpiece from reaching final assembly, but such a process is still time and material consuming.
• the invention has for its object to design a device of the type described above so that a qualitatively flawless pre-assembly is made possible.
• Another object of the present invention is to propose a device which is able to process the work data or device To receive parameters that are relevant to the entered workpieces so that they already exist before the start of the work process, and only initiate them when all conditions relating to the inserted workpieces have been properly met so that proper pre-assembly is achieved. Furthermore, there is still the task of avoiding manual adjustment of the assembly device and the errors associated therewith.
• this object is achieved in that the data of the device parameters of each tool can be transmitted by means of laser radiation or electromagnetic radiation, each using a transponder device.
• the microprocessor of the assembly device thus receives all the necessary data for the tools and the workpieces to be machined before the work process is initiated, so that incorrect settings and incorrect pre-assemblies are excluded.
• the work process is only released and initiated after the microprocessor has checked and compared all the data determining the assembly process. This eliminates all manual adjustment work and the associated errors.
• the assembly kit is combined with an electronic distance measuring device for acquiring the characteristic values of the tools, the measured values of which can be fed automatically to the microprocessor control of the assembly device.
• the distance measuring device advantageously has a microcontroller and a laser for emitting a laser beam, the distance measuring device receiving the laser beam reflected by the tool from a sensor, which measures the angle between the output beam and the reflected input beam converts the measured value into an electrical variable proportional to the distance, namely a current or a voltage and supplies this value to the microprocessor control of the assembly device, as a result of which a defined pressure is determined and the assembly force is determined.
• the light beam receiver is advantageously designed as a photodiode cell with a plurality of lines, the lines of which can be read out by the microcontroller of the distance measuring device.
• the assembly device To control the work process of the assembly device, it is advantageous to equip the assembly device with at least one pressure sensor to determine all pressure limit values during the work process. This makes it possible to monitor and control the entire work process in terms of pressure.
• the electronic control advantageously has a programmable electronic component (EPROM), which has predetermined setpoints as electronically readable comparison values, so that the work process runs automatically in a fully controlled manner.
• EPROM programmable electronic component
• the tool and the control device of the assembly device are equipped with a transmission and response system (transponder with transmission and reception system), the response system or the transponder providing complete data for actuating the control device by means of electromagnetic radiation upon excitation of the transmission system or emits the transmitter, which is received by the transmission system and fed to the control device via a write and read device.
• a transmission and response system transponder with transmission and reception system
• the response system or the transponder providing complete data for actuating the control device by means of electromagnetic radiation upon excitation of the transmission system or emits the transmitter, which is received by the transmission system and fed to the control device via a write and read device.
• the response system or the transponder preferably has an electronic information memory or a chip which is connected to the tool and which is equipped with a resonance coil which, when excited, matches the resonance frequency with the
• the data to be transmitted from a transponder contain all the data which are required to control the system, so that the control device has not stored any data which can be assigned to a specific workpiece.
• the control device can thus be used universally, since all of the required data for a work process are supplied directly by the workpiece itself. A data comparison with predetermined data by the control device is not possible and also not necessary.
• FIG. 1 shows a schematic illustration of a hydraulic assembly device with the assembly kit pulled out, in plan view
• FIG. 2 shows an assembly kit in front view with a distance measuring device in a schematic and enlarged illustration
• FIG 3 shows a further embodiment of a hydraulic assembly device with a transponder system, in which a microchip that can be addressed by an alternating electromagnetic field is attached to the tool and a transmission and reception system of the transponder is arranged inside the assembly device, optionally with an external antenna, and
• Figure 4 shows a cross section through the structure of a glass transponder.
• the housing 1 of the assembly device contains a hydraulic drive 2 for a piston 3, which is designed to be retractable and extendable into a recess 4 of the housing 1.
• the recess 4 is designed in such a way that an assembly kit 5 can be used for the insertion of different tools and the machining of different workpieces.
• different assembly kits can be used, so that the assembly device can also be used, for example, as a flanging device.
• the side of the assembly kit 5 facing the housing 1 is designed to be completely open so that the piston 3 can move into the interior 8 of the assembly kit 5.
• the front of the assembly kit 5 also has an opening 9 through which the pipe end 14 to be machined and, for example, to be installed with a cutting ring (see FIG. 3) can be inserted.
• the assembly kit 5 is also open at the top and partially covered by a distance measuring device 10, the beam output 13 of which is directed towards the tool 11 located in the interior 8 of the assembly kit 5.
• the distance measuring device 10 is equipped with a sensor 12 (see FIG. 2), which is integrated with a micro ontroller, so that no external evaluation devices are required.
• the measuring beam 13 of the distance measuring device 10 strikes the tool to be measured as a light spot, the reflected beam of which is captured by the sensor 12.
• the outgoing and reflected beam form an angle, which is determined by the sensor 12.
• This measured value is converted into an electrical variable proportional to the distance, namely a current or a voltage, and fed to the microprocessor control of the assembly device, as a result of which a defined pressure is determined and the assembly force is determined.
• the assembly device is thus prepared for machining a specific workpiece.
• FIG. 3 shows another embodiment for solving the same problem.
• a passive transponder is used for this, which consists of a transmission system 15 and a response system 16, the actual transponder.
• the transmission system 15 has a transmitter and a receiver.
• the transmitter of the transmission system 15 excites the response system (mini-chip 16), which in principle consists of a resonance coil that transmits modulated signals with its data, which are received by the receiver of the transmission system 15. This demodulates the received data and transmits it to the control device for further processing and determination of the assembly force.
• the response system preferably consists of a semiconductor memory or chip 16 which is connected to the tool 11 and has the resonance coil 18 (FIG. 4) which, when excited, modulates the resonance or carrier frequency with its data to be transmitted. Since the distance between the transmission and response system (antenna and transponder) is very small, the response system does not require its own energy source and can therefore be designed as a passive system.
• FIG. 4 shows the structure of a transponder 16 in cross section.
• a ferrite rod 17 which is surrounded by a coil 18 and is arranged on a soft adhesive 19.
• a circuit board 20 consisting of an insulator carries a chip capacitor and a semiconductor memory or chip 22, which is embedded in casting resin 24.
• the coil 18 If the coil 18 is electromagnetically excited with its resonance frequency, it sends out the resonance frequency as a carrier frequency, modulated by the data stored in the semiconductor memory.
• Each workpiece which has a transponder with a data memory according to the present invention, sends the control system all the data required for machining the workpiece, so that the control device does not need its own data which is compatible with the Data of the workpiece must be compared.
• the control device can thus be used universally.
• the early detection and avoidance of errors by the direct transmission of all required data through the respective workpiece is therefore time and material saving.
• the tool and the assembly device are protected and unnecessary wear is avoided. No further setting or input of specific values is required for the workpieces which are used and which differ depending on the requirements, so that the errors and sources of errors which have so far occurred here are advantageously eliminated.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Machine Tool Sensing Apparatuses (AREA)
• Automatic Assembly (AREA)
• Arrangements For Transmission Of Measured Signals (AREA)
• Drilling And Boring (AREA)
• Measuring Fluid Pressure (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7653005

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (12)

• 2000
  • 2000-08-16 DE DE10040606A patent/DE10040606C2/de not_active Expired - Lifetime
• 2001
  • 2001-08-15 EP EP01967006A patent/EP1309427A1/de not_active Withdrawn
  • 2001-08-15 JP JP2002519147A patent/JP2004505792A/ja active Pending
  • 2001-08-15 CZ CZ2003508A patent/CZ2003508A3/cs unknown
  • 2001-08-15 WO PCT/DE2001/003095 patent/WO2002014024A1/de not_active Application Discontinuation
• 2003
  • 2003-02-14 US US10/368,807 patent/US20030173773A1/en not_active Abandoned
  • 2003-02-14 NO NO20030721A patent/NO20030721L/no unknown

Non-Patent Citations (1)

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