EP0816535A1 - Post-traitement d'une pièce métallique magnétique obtenu par électroformage - Google Patents

Post-traitement d'une pièce métallique magnétique obtenu par électroformage Download PDF

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Publication number
EP0816535A1
EP0816535A1 EP97103499A EP97103499A EP0816535A1 EP 0816535 A1 EP0816535 A1 EP 0816535A1 EP 97103499 A EP97103499 A EP 97103499A EP 97103499 A EP97103499 A EP 97103499A EP 0816535 A1 EP0816535 A1 EP 0816535A1
Authority
EP
European Patent Office
Prior art keywords
sheet
grinding
magnet
metal sheet
magnetic
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
EP97103499A
Other languages
German (de)
English (en)
Other versions
EP0816535B1 (fr
Inventor
Wolfgang Pott
Mathias Jarek
Hans Kragl
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.)
Harting Elecktro Optische Bauteile GmbH and Co KG
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 EP0816535A1 publication Critical patent/EP0816535A1/fr
Application granted granted Critical
Publication of EP0816535B1 publication Critical patent/EP0816535B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49995—Shaping one-piece blank by removing material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53039—Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
    • Y10T29/53061—Responsive to work or work-related machine element
    • Y10T29/53083—Responsive to work or work-related machine element including means to apply magnetic force directly to position or hold work

Definitions

  • the invention is based on a method for Reworking an electroplated magnetic Sheet metal, which structures, in particular lowered microstructures.
  • Master structure It can be done in league technique, in photoresist technique, Silicon microstructure technology or otherwise be made. By electroplating one such a microstructured master structure is produced the mold insert for the impression tool. To stress-free To get mold inserts, the galvanic impression must be very stress-free with a large thickness, approx. 3 - 5 mm, be performed.
  • the sheets obtained by electroplating are ground and fitted into the impression tool. Disadvantageous is that the deposition rate in electroplating must be set up very slowly to the necessary Achieve tension-free. The total duration of one Electroplating can take up to four weeks. In expensive systems are blocked during this time. Another The disadvantage is that a master structure in the Usually only a single mold insert can be produced. However, this has cost reasons (duration of the electroplating impression) also quality reasons, since the deviations from the planarity in further generations of impressions e.g. B. in the third generation sheet are higher than in the first generation sheet. Can from one Master structure made only a single mold insert the costs per mold insert increase here too (Master structure production is usually expensive).
  • multiple mold inserts can be inexpensively produced by multiple copying technology.
  • thicker "electroplating, ie sheet thicknesses of more than 3 mm no replanarization takes place during regrinding, since the sheet is almost completely rigid due to its thickness.
  • the planarity of the mold insert is determined by the absence of tension in the electroplating.
  • Claims 1 to 5 relate to further developments of the inventive method.
  • Claim 6 shows one advantageous use of a according to the invention Processed post-processed sheet metal.
  • the after Methods of the invention post-processed sheet metal by suitable clamping in the impression tool absolutely be directed in parallel.
  • FIG. 1 shows the conventional production of an electroplated nickel sheet (nickel shim) provided with microstructures from a master structure in thicker "electroplating.
  • nickel sheet nickel shim
  • Such a nickel sheet is 3 - 6 mm thick, not flexible and manufactured by an extremely stress-free galvanic process, with a total duration of the electroplating impression of several weeks.
  • the shim planarity in the structure zone (middle area between the V-grooves for the optical fiber couplings) is ⁇ 20 ⁇ m. Because of the duration of the electroplating impression and also for quality reasons, this technique is not suitable for Production of multiple copies.
  • FIG. 3 shows, this is galvanically from the master structure molded and with lowered microstructures 4 provided nickel sheet 1 domed, d. H. not stress-free, and also not of uniform thickness. That in Figure 3 still arched nickel sheet is under magnetic force (magnetic forces) against an absolute plan magnetic clamping block (plane mounting table 2) excited, the magnet 2 the nickel sheet in all Must be able to drag areas to its surface. The Clamping takes place so that the structure side of the Nickel sheet points to the magnet surface of the magnet. The prerequisite for this is that the sheet is not too thick (less than 1.5 mm). Before clamping, the Nickel sheets 1 with the lowered microstructure areas pretreated for the grinding process by a drop of a later removable paint 3, z. B. polymethyl acrylate solved in z. B. ethyl acetate, so in the Lowering 4 is dripped that the bottom of the lowering as well as the microstructures are completely covered (Fig. 6).
  • Figure 4 is the machining direction of grinding (Grinding). After removing the magnetic Clamping block turns the post-processed planarized Nickel sheet due to its tension again and picks up the curved shape according to Figure 5.
  • the protective lacquer 3 can e.g. B. at 60 ° C with chloroform.
  • a mold insert in a casting tool that is post-processed Nickel sheet for plastic impressions and in particular for injection molding, hot stamping or reaction molding processes suitable. It is particularly advantageous for production of integrated optical waveguide components for example according to P 44 01 219.5 or P 196 19 353.2 use, as well as for all other plan microstructures.
  • a magnetic clamping block with a Permanent magnets can also be an electromagnetic one Clamping block can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP97103499A 1996-06-29 1997-03-04 Post-traitement d'une pièce métallique magnétique obtenu par électroformage Expired - Lifetime EP0816535B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19626215 1996-06-29
DE19626215A DE19626215A1 (de) 1996-06-29 1996-06-29 Verfahren zur Nachbearbeitung eines galvanisch abgeformten magnetischen Metallbleches

Publications (2)

Publication Number Publication Date
EP0816535A1 true EP0816535A1 (fr) 1998-01-07
EP0816535B1 EP0816535B1 (fr) 2001-08-29

Family

ID=7798451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103499A Expired - Lifetime EP0816535B1 (fr) 1996-06-29 1997-03-04 Post-traitement d'une pièce métallique magnétique obtenu par électroformage

Country Status (3)

Country Link
US (1) US5926938A (fr)
EP (1) EP0816535B1 (fr)
DE (2) DE19626215A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054781A1 (fr) 2009-11-03 2011-05-12 Basf Se Compositions thermoplastiques avec fluidité améliorée

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7967328B2 (en) * 2007-05-24 2011-06-28 Irvin Automotive Products, Inc. Continuous side airbag seam
EP3418662B1 (fr) * 2017-06-22 2020-11-11 HS Marston Aerospace Limited Procédé de fabrication d'un composant d'un échangeur de chaleur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660315A1 (fr) * 1993-12-24 1995-06-28 Canon Kabushiki Kaisha Procédé et dispositif pour la fabrication de matrices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801293A (en) * 1972-06-05 1974-04-02 Timesavers Inc Method of machining ferromagnetic workpieces to true flatness

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660315A1 (fr) * 1993-12-24 1995-06-28 Canon Kabushiki Kaisha Procédé et dispositif pour la fabrication de matrices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054781A1 (fr) 2009-11-03 2011-05-12 Basf Se Compositions thermoplastiques avec fluidité améliorée

Also Published As

Publication number Publication date
EP0816535B1 (fr) 2001-08-29
DE19626215A1 (de) 1998-01-02
DE59704423D1 (de) 2001-10-04
US5926938A (en) 1999-07-27

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