EP0647012A2 - Méthode pour réduire le temps de rodage raccourci d'une machine à collecteur - Google Patents

Méthode pour réduire le temps de rodage raccourci d'une machine à collecteur Download PDF

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Publication number
EP0647012A2
EP0647012A2 EP94113605A EP94113605A EP0647012A2 EP 0647012 A2 EP0647012 A2 EP 0647012A2 EP 94113605 A EP94113605 A EP 94113605A EP 94113605 A EP94113605 A EP 94113605A EP 0647012 A2 EP0647012 A2 EP 0647012A2
Authority
EP
European Patent Office
Prior art keywords
time
frequency
commutator
running
range
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.)
Granted
Application number
EP94113605A
Other languages
German (de)
English (en)
Other versions
EP0647012A3 (fr
EP0647012B1 (fr
Inventor
Dietmar Dipl.-Ing. Berghänel
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.)
Berghanel Elektrotechnik
Original Assignee
Berghanel Elektrotechnik
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 Berghanel Elektrotechnik filed Critical Berghanel Elektrotechnik
Priority to SI9430042T priority Critical patent/SI0647012T1/xx
Publication of EP0647012A2 publication Critical patent/EP0647012A2/fr
Publication of EP0647012A3 publication Critical patent/EP0647012A3/fr
Application granted granted Critical
Publication of EP0647012B1 publication Critical patent/EP0647012B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/12—Manufacture of brushes

Definitions

  • the invention relates to the adaptation of the running radius of carbon brushes to the commutator.
  • a disadvantage of this known method is the damaging effect of the chemical substances mentioned on the surface of the commutator. This becomes rough and thus causes a premature failure of the carbon brush-commutator system. The exposure time of these chemical substances, which is difficult to control, is also unfavorable.
  • Another disadvantage is the high degree of radio interference of machines treated in this way, in particular also after the running-in phase, which is a result of the increased tread surface roughness of the commutator. Furthermore, they are often abrasives that limit the service life of the roller or slide bearings used in motors.
  • the aim of minimizing the manufacturing time is that each machine must be treated individually.
  • the invention specified in claim 1 is based on the problem of restricting the measure causing the increased wear of the carbon brushes exclusively to them and controlling them precisely in terms of time.
  • the advantages that can be achieved with the invention are that the wear-increasing time of operation in the frequency spectrum mentioned can be precisely controlled, its application has no effect on the life of the commutator carbon brush system operating in normal operation after the running-in period, and no influence on the radio interference values in the intended use can be determined.
  • Another decisive advantage is the ease of series production, since no measure is required on the product, but only once on the production equipment, ie on the circuit arrangement of the inlet section.
  • Further important advantages of the invention are that intelligent run-in solutions and parameter acquisition in production are possible. It is also advantageous that the method according to the invention can also be combined with other known running-in aids. By reducing the running-in time and reducing the running-in performance, time and energy are saved in series production.
  • a time-dependent temperature ⁇ is established on the commutator-carbon brush system.
  • the thermal start-up time t ⁇ is defined as the time range up to 0.95 times ( ⁇ 3 ⁇ ) the steady-state temperature ⁇ E and the thermal steady-time t B as the time until the end of the running-in process based on the briefly maximum permissible system temperature.
  • the run-in time t E extends until 70-100% of the brush running surface contact the commutator. This guide value is set by the manufacturer on a machine-specific basis.
  • t E , t ⁇ , t B depend on the type of commutator machine and can be defined for the currents, voltages and frequencies with which it is operated.
  • the wear v of the carbon brushes depends both on the temperature ⁇ (FIG. 2a) and on the frequency f (FIG. 2b), and the dependencies shown in FIG. 2c exist between the frequency f and the temperature ⁇ .
  • the dependence of the wear on the frequency results from a frequency dependency of the commutation, so that even with harmonic operation and undervoltage, a higher wear than with nominal operation can be achieved.
  • Fig. 3 shows the resulting run-in time t E (broken lines) during operation with a sinusoidal waveform of frequency 50 Hz, in which the steady-state temperature ⁇ E is reached in normal operation on the commutator-carbon brush system.
  • the continuous lines of the temperature ⁇ correspond to the shortened running-in time t according to the invention ' E .
  • the quantitative proportions and the chronological order of the frequencies, as well as the level of the operating voltages, are to be determined specifically for the engine and can be easily implemented with a generator, an amplifier and a time or temperature control.
  • the maximum permissible steady-state temperature ⁇ max should be approached as close as possible, with which the machine can be operated without damage for a defined period of time. However, this steady-state temperature ⁇ max should not be exceeded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
EP94113605A 1993-09-02 1994-08-31 Méthode pour réduire le temps de rodage raccourci d'une machine à collecteur Expired - Lifetime EP0647012B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9430042T SI0647012T1 (en) 1993-09-02 1994-08-31 Method for shortening the break-in time of a commutator machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4329603 1993-09-02
DE4329603A DE4329603A1 (de) 1993-09-02 1993-09-02 Verfahren zur Verkürzung der Einlaufzeit von Kommutatormaschinen

Publications (3)

Publication Number Publication Date
EP0647012A2 true EP0647012A2 (fr) 1995-04-05
EP0647012A3 EP0647012A3 (fr) 1995-07-12
EP0647012B1 EP0647012B1 (fr) 1997-01-15

Family

ID=6496643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113605A Expired - Lifetime EP0647012B1 (fr) 1993-09-02 1994-08-31 Méthode pour réduire le temps de rodage raccourci d'une machine à collecteur

Country Status (3)

Country Link
EP (1) EP0647012B1 (fr)
DE (2) DE4329603A1 (fr)
SI (1) SI0647012T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806819A1 (fr) * 1995-05-15 1997-11-12 Berghänel Elektrotechnik Procédé pour réduire le temps de rodage de petites machines à collecteurs à grande vitesse
EP0984546A2 (fr) * 1998-09-02 2000-03-08 Berghänel Elektrotechnik Procédé de rodage pour des balais de moteurs à aimants permanents

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030357A1 (de) * 1980-08-11 1982-03-11 VEB Ingenieurbüro Elektrogeräte, DDR 9010 Karl-Marx-Stadt Verfahren zur verkuerzung der einlaufzeiten von kommunatorbuersten elektrischer maschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030357A1 (de) * 1980-08-11 1982-03-11 VEB Ingenieurbüro Elektrogeräte, DDR 9010 Karl-Marx-Stadt Verfahren zur verkuerzung der einlaufzeiten von kommunatorbuersten elektrischer maschinen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806819A1 (fr) * 1995-05-15 1997-11-12 Berghänel Elektrotechnik Procédé pour réduire le temps de rodage de petites machines à collecteurs à grande vitesse
EP0984546A2 (fr) * 1998-09-02 2000-03-08 Berghänel Elektrotechnik Procédé de rodage pour des balais de moteurs à aimants permanents
EP0984546A3 (fr) * 1998-09-02 2000-11-08 Berghänel Elektrotechnik Procédé de rodage pour des balais de moteurs à aimants permanents

Also Published As

Publication number Publication date
EP0647012A3 (fr) 1995-07-12
SI0647012T1 (en) 1997-10-31
DE4329603A1 (de) 1995-03-09
EP0647012B1 (fr) 1997-01-15
DE59401593D1 (de) 1997-02-27

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