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WO1991007253A1 - Procede d'usinage de surface pour collecteurs plats - Google Patents

Procede d'usinage de surface pour collecteurs plats Download PDF

Info

Publication number
WO1991007253A1
WO1991007253A1 PCT/DE1990/000823 DE9000823W WO9107253A1 WO 1991007253 A1 WO1991007253 A1 WO 1991007253A1 DE 9000823 W DE9000823 W DE 9000823W WO 9107253 A1 WO9107253 A1 WO 9107253A1
Authority
WO
WIPO (PCT)
Prior art keywords
commutator
grinding
face
axis
longitudinal axis
Prior art date
Application number
PCT/DE1990/000823
Other languages
German (de)
English (en)
Inventor
Mehmet Varlik
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1991007253A1 publication Critical patent/WO1991007253A1/fr

Links

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
    • H01R43/06—Manufacture of commutators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/08—Portable grinding machines designed for fastening on workpieces or other parts of particular section, e.g. for grinding commutators

Definitions

  • the invention relates to a method for machining the surface of face commutators according to the preamble of claim 1.
  • the method according to the invention with the features mentioned in claim 1 has the advantage that small chips are generated when machining the surface of the plank commutator, which chips cannot get stuck in the commutator slots.
  • the dust generated during grinding can also be easily extracted during processing. There is no need to remove the chips manually. Since the ground surface already meets the topography requirements, subsequent sanding becomes superfluous.
  • a cup wheel is used to machine the surface of the face commutator.
  • the relatively large grinding surface results in a particularly long tool life, so that tool change times can be reduced to a minimum.
  • An embodiment of the method is particularly preferred in which a grinding pin is used which is galvanically coated with a special grain material.
  • the manufacture of this tool is relatively simple and therefore inexpensive.
  • an embodiment of the method is preferred in which the abrasive body designed as a grinding pin is coated with an abrasive on its front side only in the area of the outer circumference. In this way, the processing processing a plan collector with a minimal use of abrasives.
  • All commutator materials can be processed with this method.
  • it is particularly suitable for commutators with segments made of electrolytic copper or carbon.
  • FIG. 1 shows an arrangement for processing the surface of a flat commutator with the aid of a grinding wheel designed as a cup wheel and
  • FIG. 1 shows the face commutator 1 of an electrical machine, which can be rotated about a rotational or longitudinal axis 3 that runs horizontally in this figure.
  • a grinding wheel is provided here, which is designed as a cup wheel 5. This rotates about an axis of rotation 7, the axis of rotation being arranged at an angle with respect to the longitudinal axis 3 of the face commutator. In this way, only a small peripheral section of the cup wheel comes into engagement with the face commutator 1.
  • the cup wheel is provided with an abrasive coating which has a galvanically or ceramically bonded grain material. Cubic crystalline boron nitrite (CBN) is particularly preferred as the abrasive material, because it enables particularly good and functional surface qualities in the face commutator 1 and long service life of the cup wheel 5 to be achieved.
  • CBN Cubic crystalline boron nitrite
  • the cup wheel is rotated about its axis of rotation 7.
  • the rotation of the cup wheel is imparted a translational movement perpendicular to the longitudinal axis 3 of the face commutator, so that its edge area with the abrasive coating 9 is moved along the surface of the face commutator 1.
  • a force is exerted on the pot disc 5 in the direction of the longitudinal axis 3.
  • the infeed movement which takes into account the wear of the grinding wheel and the removal of the collector surface, takes place parallel to Longitudinal or rotational axis of the face collector, the grinding body or the collector to be machined or both parts can perform the feed movement.
  • the axis of rotation of the grinding wheel ie the axis of the cup wheel 5 encloses an angle with the longitudinal axis 3 of the face commutator.
  • the included angle can be in the range of approximately 3 ° to approximately 25 ".
  • An angle range of 5" to 10 A is preferred
  • FIG. 2 shows a further possibility of surface machining a face commutator.
  • the same parts are provided with the same reference symbols here.
  • the flat commutator 1 is in turn rotatably supported about its longitudinal axis 3 and is rotated about this axis when its surface is machined.
  • the grinding body used here is designed as a grinding pin 15 which is rotatably mounted about its longitudinal axis 17 and rotates about this axis during the machining of the surface of the face commutator 1.
  • the front end face of the grinding pin 15 facing the face commutators is here only coated on the outer circumference with a grinding covering 19, which consists of galvanically bound grain material, preferably cubic crystalline boronite (CBN). It is also possible to diamond the grinding elag.
  • CBN cubic crystalline boronite
  • the rotational movement of the grinding body is superimposed on a translational movement perpendicular to its axis of rotation, so that its grinding coating 19 over the surface of the face commu ⁇ tators 1 moves.
  • the diameter of the grinding pin is preferably chosen to be so large that it covers the entire width of the commutator, as a result of which the additional translational movement can be omitted.
  • the grinding pin 15 is moved parallel to its axis of rotation 17 in the direction of the face commutator 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Procédé d'usinage de surface pour des collecteurs plats, caractérisé par le fait que le collecteur plat (1) se déplace en rotation autour de son axe longitudinal (3), que sa surface est usinée à l'aide d'une meule formée en coupelle (5) tournant autour d'un axe (7) formant un angle de préférence de 5° à 10° avec l'axe longitudinal (3) du collecteur plat (1), que la meule et/ou le collecteur plat exécutent un mouvement de translation verticalement à l'axe de rotation (3) du collecteur plat (1) et que la meule et/ou le collecteur sont mobiles parallèlement à l'axe 3 pour effectuer le mouvement d'avance.
PCT/DE1990/000823 1989-11-08 1990-10-27 Procede d'usinage de surface pour collecteurs plats WO1991007253A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3937182.4 1989-11-08
DE19893937182 DE3937182A1 (de) 1989-11-08 1989-11-08 Verfahren zur bearbeitung der oberflaeche von plankommutatoren

Publications (1)

Publication Number Publication Date
WO1991007253A1 true WO1991007253A1 (fr) 1991-05-30

Family

ID=6393112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1990/000823 WO1991007253A1 (fr) 1989-11-08 1990-10-27 Procede d'usinage de surface pour collecteurs plats

Country Status (2)

Country Link
DE (1) DE3937182A1 (fr)
WO (1) WO1991007253A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5811445A (en) * 1994-03-04 1998-09-22 Roussel Uclaf Method of preventing abnormal stimulation of AT1 and AT2 receptors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009011493A1 (de) * 2009-03-06 2010-09-09 Rhodius Schleifwerkzeuge Gmbh & Co. Kg Schleifstift

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1286309A (fr) * 1961-04-13 1962-03-02 Fabrications Mecaniques De Pre Perfectionnements aux machines à rectifier les surfaces planes
DE1131546B (de) * 1959-09-04 1962-06-14 Mattison Machine Works Vorrichtung zur Verstellung der Schleifscheibenachsenlage bei Flachschleifmaschinen
US4525957A (en) * 1984-03-16 1985-07-02 Ex-Cell-O Corporation Apparatus and method for finishing radial commutator
US4825596A (en) * 1986-12-18 1989-05-02 James Kinner Flywheel resurfacing method and apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131546B (de) * 1959-09-04 1962-06-14 Mattison Machine Works Vorrichtung zur Verstellung der Schleifscheibenachsenlage bei Flachschleifmaschinen
FR1286309A (fr) * 1961-04-13 1962-03-02 Fabrications Mecaniques De Pre Perfectionnements aux machines à rectifier les surfaces planes
US4525957A (en) * 1984-03-16 1985-07-02 Ex-Cell-O Corporation Apparatus and method for finishing radial commutator
US4825596A (en) * 1986-12-18 1989-05-02 James Kinner Flywheel resurfacing method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5811445A (en) * 1994-03-04 1998-09-22 Roussel Uclaf Method of preventing abnormal stimulation of AT1 and AT2 receptors
US5977155A (en) * 1994-03-04 1999-11-02 Hoechst Marion Roussel Imidazole-5-carboxamides

Also Published As

Publication number Publication date
DE3937182A1 (de) 1991-05-16

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