BE876069A - Procede pour la formation de perforations de pierres a trefiler - Google Patents

Procede pour la formation de perforations de pierres a trefiler

Info

Publication number
BE876069A
BE876069A BE0/195013A BE195013A BE876069A BE 876069 A BE876069 A BE 876069A BE 0/195013 A BE0/195013 A BE 0/195013A BE 195013 A BE195013 A BE 195013A BE 876069 A BE876069 A BE 876069A
Authority
BE
Belgium
Prior art keywords
trefiling
stones
procedure
forming perforations
perforations
Prior art date
Application number
BE0/195013A
Other languages
English (en)
Original Assignee
Akzo Nv
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 Akzo Nv filed Critical Akzo Nv
Publication of BE876069A publication Critical patent/BE876069A/fr

Links

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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
BE0/195013A 1978-05-08 1979-05-07 Procede pour la formation de perforations de pierres a trefiler BE876069A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782820018 DE2820018A1 (de) 1978-05-08 1978-05-08 Verfahren zum bearbeiten des einlaufkonus an ziehsteinbohrungen

Publications (1)

Publication Number Publication Date
BE876069A true BE876069A (fr) 1979-09-03

Family

ID=6038862

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/195013A BE876069A (fr) 1978-05-08 1979-05-07 Procede pour la formation de perforations de pierres a trefiler

Country Status (2)

Country Link
BE (1) BE876069A (fr)
DE (1) DE2820018A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116100438B (zh) * 2023-03-31 2024-01-12 东莞市春草研磨科技有限公司 一种多面多工位的拉丝机构

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB718913A (en) * 1952-03-07 1954-11-24 Rudkin & Riley Ltd Improvements in or relating to die ripping and polishing machines
DE2416717A1 (de) * 1974-04-05 1975-10-16 Fritz Schmale Praezisions ziehstein- und duesenbearbeitungsmaschine

Also Published As

Publication number Publication date
DE2820018A1 (de) 1979-11-22

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: AKZO N.V.

Effective date: 19910531