DE198097C - - Google Patents
Info
- Publication number
- DE198097C DE198097C DENDAT198097D DE198097DA DE198097C DE 198097 C DE198097 C DE 198097C DE NDAT198097 D DENDAT198097 D DE NDAT198097D DE 198097D A DE198097D A DE 198097DA DE 198097 C DE198097 C DE 198097C
- Authority
- DE
- Germany
- Prior art keywords
- grinding
- shaft
- rotating
- axis
- lens
- 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.)
- Active
Links
- 239000004575 stone Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000750 progressive Effects 0.000 description 1
- 230000036633 rest Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/04—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses involving grinding wheels controlled by gearing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- M 198097 —-■ KLASSE 67«. GRUPPE- M 198097 - ■ CLASS 67 «. GROUP
Die Erfindung betrifft eine Vorrichtung zum Schleifen von Konkav- oder Konvexlinsen, bei denen es auf große Genauigkeit in der Ausführung nicht ankommt. Sie. besteht in der Hauptsache aus einem umlaufenden Schleifoder Polierstein bzw. Schleifstahl und einem Linsenhalter, mittels dessen die gleichfalls in Umdrehung versetzte Linse vor dem Schleifstein in einem Kreisbogen hin und her geführt werden kann.The invention relates to a device for grinding concave or convex lenses, where high accuracy in execution is not important. She. consists in the main thing consists of a rotating grinding or polishing stone or grinding steel and one Lens holder, by means of which the lens is also set in rotation in front of the grindstone can be guided back and forth in an arc.
In der Zeichnung ist die Erfindung in einer beispielsweisen schematischen Darstellung gegeben. In the drawing, the invention is given in an exemplary schematic representation.
Fig. ι ist eine Draufsicht undFig. Ι is a plan view and
Fig. 2 eine Seitenansicht von A aus gesehen. Fig. 2 is a side view seen from A.
Der Schleifstein α und die Antriebsscheibe c sind je an einem Ende der Welle b befestigt, die in zwei dazwischen angeordneten Lagern d auf einem Tische e läuft. Diese Anordnung entspricht der üblichen Konstruktion. The grinding stone α and the drive pulley c are each attached to one end of the shaft b , which runs in two bearings d arranged between them on a table e . This arrangement corresponds to the usual construction.
Die zu schleifende Linse f ist in dem muldenförmigen Teller g fest eingespannt. The lens f to be ground is firmly clamped in the trough-shaped plate g.
Der Teller g sitzt auf einer Welle h, die durch ein Kreuzgelenk i mit der Antriebswelle k verbunden ist. Die Welle h ist in einem Gleitlager m auf einer kreisförmigen Führung ο gelagert, deren Krümmungsmittelpunkt in der durch den Achsenschnittpunkt des Kreuzgelenkes i gehenden Senkrechten liegt. Zur Bewegung des Gleitlagers m dient der zweiarmige Hebel /, dessen Drehzapfen auf dem Oberteil des Lagers άλ für die Welle k befestigt ist. Da somit die Drehachse des Handhebels / und die Schwenkachse der die Linse haltenden Welle Λ auseinanderliegen, ist der Zapfen η am Oberteil des Lagers m ■in einem Langloch ρ am Ende des Hebels / geführt.The plate g sits on a shaft h which is connected to the drive shaft k by a universal joint i . The shaft h is mounted in a plain bearing m on a circular guide ο , the center of curvature of which lies in the perpendicular through the axis intersection of the universal joint i. For the movement of the sliding bearing m is used for the two-armed levers /, whose pivot on the upper part of the bearing for the shaft ά λ k is fixed. Since the axis of rotation of the hand lever / and the pivot axis of the shaft Λ holding the lens are apart, the pin η on the upper part of the bearing m ■ is guided in an elongated hole ρ at the end of the lever /.
Der Hebel / kann von Hand oder mechanisch hin und her bewegt werden. Durch Schwenken des Werkstückhalters vor der umlaufenden Schleifscheibe wird an der umlaufenden Linse eine konvexe Kugelfläche angeschliffen, deren Mittelpunkt der Achsenschnittpunkt des Kreuzgelenkes ist.The lever / can be moved back and forth manually or mechanically. By The workpiece holder is swiveled in front of the rotating grinding wheel on the rotating Lens ground a convex spherical surface, the center of which is the axis intersection of the universal joint is.
Sollen konkave Linsen geschliffen werden, so wird die Schwenkbewegung des Linsenhalters ausgeschaltet, so daß nur eine Umlaufende Bewegung der Linse stattfindet und die Achse h derselben genau senkrecht zur Schleifscheibenachse eingestellt. Das Schleifwerkzeug muß dabei eine ganz schmale Schleiffläche (Schneide) erhalten. Durch die Drehung des Schleifrades wird dann an der umlaufenden Linse eine konkave Kugelfläche angeschliffen, die nach dem Radius der kreisförmigen Schleifkante gekrümmt ist.If concave lenses are to be ground, the pivoting movement of the lens holder is switched off, so that only a circular movement of the lens takes place and the axis h of the same is set exactly perpendicular to the grinding wheel axis. The grinding tool must have a very narrow grinding surface (cutting edge). By turning the grinding wheel, a concave spherical surface is ground on the rotating lens, which is curved according to the radius of the circular grinding edge.
Um die Linse so einstellen und nachstellen zu können, daß sie an der Schleiffläche des Werkzeuges richtig anliegt, ist die WTelle h des Linsenhalters mit dem Glied q des Kreuzgelenkes i durch Verschraubung verbunden, so daß der Abstand der Linse vom Schleifzeug entsprechend dem Verschleiß des Schleifwerkzeuges und der fortschreitenden Schleif arbeit durch Herausschrauben derIn order to be able to set and readjust the lens so that it rests correctly on the grinding surface of the tool, the W T elle h of the lens holder is connected to the link q of the universal joint i by screwing, so that the distance between the lens and the grinding tool corresponds to the wear the grinding tool and the progressive grinding work by unscrewing the
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE198097C true DE198097C (en) |
Family
ID=460926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT198097D Active DE198097C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE198097C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2659278A (en) * | 1950-05-02 | 1953-11-17 | Pontiac Engraving & Electype C | Trimming machine |
DE1144614B (en) * | 1956-11-17 | 1963-02-28 | Theodor Gehlen | Device for the production of spherically curved surfaces on the end faces of rod-shaped workpieces |
DE1195198B (en) * | 1959-06-02 | 1965-06-16 | Lunetiers Cottet Soc D | Device for rough grinding of aspherical surfaces |
-
0
- DE DENDAT198097D patent/DE198097C/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2659278A (en) * | 1950-05-02 | 1953-11-17 | Pontiac Engraving & Electype C | Trimming machine |
DE1144614B (en) * | 1956-11-17 | 1963-02-28 | Theodor Gehlen | Device for the production of spherically curved surfaces on the end faces of rod-shaped workpieces |
DE1195198B (en) * | 1959-06-02 | 1965-06-16 | Lunetiers Cottet Soc D | Device for rough grinding of aspherical surfaces |
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