DE192490C

DE192490C -

Info

Publication number: DE192490C
Application number: DENDAT192490D
Authority: DE

Description

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KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- M 192490 KLASSE 38 c. GRUPPE- M 192490 CLASS 38 c. GROUP

ERNST HEINRICH SCHMIDT in LONDON.ERNST HEINRICH SCHMIDT in LONDON.

Patentiert im Deutschen Reiche vom 29. April 1905 ab.Patented in the German Empire on April 29, 1905.

Die Erfindung bezieht sich auf ein Verfahren zum Biegen und Formen von Schleifmaterialien, z. B. Glas- und Sandpapier, welche auf Schleif- und Polierscheiben befestigt werden. Gemäß der Erfindung wird das Schleifmaterial beim Biegen nach dem Umfange der Scheibe dem zu bearbeitenden Gegenstand entsprechend profiliert und in senkrecht zur Profilierungsrichtung stehende,The invention relates to a method for bending and shaping abrasive materials, z. B. Glass and sandpaper, which are attached to grinding and polishing discs. According to the invention the grinding material when bending according to the circumference of the disc to be processed The object is appropriately profiled and positioned perpendicular to the direction of the profiling,

ίο in bestimmten Abständen wiederkehrende Falten gelegt. Nach Bedarf kann das Schleifmaterial auch eingekerbt, geritzt oder durchlöchert werden, um es leichter in das gewünschte Profil bringen zu können.ίο put recurring folds at certain intervals. If necessary, the abrasive material can can also be notched, scratched or holed to make it easier in the way you want it To be able to bring profile.

In den Zeichnungen sind verschiedene Ausführungsformen der Erfindung dargestellt, und es zeigen Fig. 1 und 2 eine Seiten- bzw. Vorderansicht der Vorrichtung zum Biegen des. Schleifmaterials gemäß der Erfindung.In the drawings, various embodiments of the invention are shown, and Figures 1 and 2 show, respectively, side and front views of the bending device des. Abrasive material according to the invention.

Bei dieser Anordnung, welche dazu bestimmt ist, Glaspapier, das zum Bearbeiten von sechskantigen Gegenständen verwendet werden soll, zu formen, sind zwei Scheiben a, b vorgesehen, von denen die eine nachgiebig angeordnet ist. Die beiden Scheiben sind auf den umlaufenden Wellen c, d befestigt. Die Scheibe α besitzt eine halbsechseckige Nut e und auf beiden Seiten derselben einen Rand, während die Scheibe b ein umgekehrtes Profil aufweist, mit einer in die Nut e passenden Rippe, wie dies aus der Fig. 3 der Zeichnung zu ersehen ist, welche ein im vergrößerten Maßstabe gezeichneter Schnitt nach der Linie 3-3 der Fig. 1 ist. Der zu formende Streifen Glaspapier f o. dgl. geht hierbei zuerst unter Kerbwerkzeugen oder Messern g hinweg, so daß das Biegen des Papierstreifens nach den Winkeln des halben regelmäßigen Sechseckes erleichtert wird. Damit das Schleifmaterial gezwungen wird, die Krümmung nach dem Umfange der Scheibe α anzunehmen, ist in geringem Abstande von der Scheibe α eine Scheibe h vorgesehen. In this arrangement, which is intended to form glass paper which is to be used for processing hexagonal objects, two disks a, b are provided, one of which is flexibly arranged. The two disks are attached to the rotating shafts c, d. The disk α has a semi-hexagonal groove e and on both sides of the same an edge, while the disk b has an inverted profile, with a rib that fits into the groove e , as can be seen from FIG. 3 of the drawing, which is an in Section along line 3-3 of FIG. 1 is drawn on an enlarged scale. The strip of glass paper f or the like to be formed first goes under notching tools or knives g so that the bending of the paper strip according to the angles of the half regular hexagon is facilitated. Thus, the abrasive material is forced to the curvature of the circumference of the disc to adopt α, is low in distances from the disk α h a disc provided.

Anstatt der kerbenden Werkzeuge g kann eine Kerbrolle angewendet werden, oder eine der beiden Scheiben a, b kann mit geeigneten einkerbenden Vorsprüngen ausgerüstet sein.Instead of the notching tools g , a notching roller can be used, or one of the two disks a, b can be equipped with suitable notching projections.

Das Glaspapier o. dgl. kann auch unmittelbar auf der Polierscheibe geformt werden. Diese Anordnung ist in den Fig. 4 und 5 der Zeichnung dargestellt, welche eine Seitenansicht bzw. ein Grundriß der zusammenarbeitenden Scheiben sind.The glass paper or the like can also be molded directly on the polishing pad. This arrangement is illustrated in Figures 4 and 5 of the drawings, which are a side view or a plan view of the cooperating disks.

Die Schmirgelscheibe i besitzt beispielsweise an ihrem Umfang eine halbkreisförmige Nut, und die Scheibe j ist mit einer Rippe k ausgerüstet, welche entsprechend der Nut der Scheibe ausgebildet ist und. in diese hineingreift. Die Scheibe i besitzt weiterhin in gewissen Abständen eine Reihe von querverlaufenden Nuten Z, und die Scheibe j ist mit einer Anzahl dementsprechend geformter Vorsprünge m ausgestattet, welche in die Quernuten / passen. Die Scheibe j sitzt auf einem Bolzen η des Hebels 0, welcher sich um die Welle ρ der Scheibe i drehen kann. Die Scheibe i besitzt weiterhin ein Zahnrad q, welches rnit einem entsprechend ausgebildeten Zahnrade r der Scheibe j in Eingriff steht, so daß der Eingriff der Nuten der Scheibe i mit den Vorsprüngen der Scheibe j gesichertThe emery disk i has, for example, a semicircular groove on its circumference, and the disk j is equipped with a rib k , which is formed in accordance with the groove of the disk and. reaches into this. The disk i furthermore has a series of transverse grooves Z at certain intervals, and the disk j is provided with a number of correspondingly shaped projections m which fit into the transverse grooves /. The disk j sits on a bolt η of the lever 0, which can rotate around the shaft ρ of the disk i. The disk i furthermore has a toothed wheel q which meshes with a correspondingly designed toothed wheel r of the disk j , so that the engagement of the grooves of the disk i with the projections of the disk j is ensured

Claims

will. In this way, the grinding material is placed in folds perpendicular to the profile, corresponding to the curvature. If, with this arrangement, the strip of glass paper or the like is to be connected to the pane i, it is first placed around this pane i and then forced through the pane j, which is moved around the pane i by means of the lever o to take on the circumferential shape of the disk i. Instead of a simple strip of the abrasive material, a strip of ordinary paper, cotton, felt, wire gauze ο. Like. Be treated in the manner described, on which the glass paper is attached. 6 and 7 of the drawings, a strip s 'is shown in side view and in plan, on which abutting strips of abrasive material h' are glued or otherwise attached. The abutting edges of the strips are made somewhat hollow (Fig. 7) so that the belt can be easily inserted into the grooved profiles of the emery disk. In the embodiment of FIGS. 8 and 9, the band s 'is equipped on its underside with a number of transverse strips s "of suitable material, on the upper side in a corresponding shape with the strips h' of glass paper. The spaces between the adjacent edges of the Strips on the upper and lower side of the tape s' allow convenient folding when the tape is placed over a profiled emery disk. Instead of these individual strips, a full strip of glass paper can be used, which is equipped with notched transverse grooves t "and longitudinal grooves t, as can be seen from FIGS. 10, 11 and 12, FIG. 11 being a section along the line 25-25 of FIG. As a result of this design, the strip can also be easily inserted into the profile of the emery disk. In the latter embodiment, the strip h1 is provided with thickened edges h2 in order to enable better fastening. 13, 14 and 15 show a strip of similar shape to that of the embodiment of FIGS. 10 to 12, FIG. 14 being a section along the line 28-28 of FIG. Instead of the above-mentioned notches, perforations arranged in spaces are provided in the last embodiment. The strip hl can also be produced from sections which have perforations provided in the longitudinal direction, as can be seen from FIG. 16 of the drawing. ■ Patent claims:

1. Method of bending and shaping abrasive materials, e.g. B. Glass and Sandpaper, which are attached to grinding and polishing discs, thereby characterized in that the abrasive material when bending according to ■ the scope of Disc profiled according to the object to be processed and in a vertical position to the profiling direction standing, at certain intervals recurring folds is placed, whereby it is also after If necessary, it is notched, scored, or perforated to make it easier to get into what you want To be able to bring profile.

2. Apparatus for carrying out the method according to claim 1, characterized by two disks (a, b), between which the grinding material passes, which are designed on the circumference as a male and female mold of the profile to be produced, and a disk (K), which is slightly Distances from the one disc (a) and the abrasive material forces the curvature according to the circumference of the disc (a). to accept.

3. Apparatus according to claim 2, characterized in that the disc, the profile and curvature of which the abrasive material is to receive, with grooves (I) provided at certain intervals, whereas the disc cooperating with it is equipped with corresponding projections (m) , wherein the engagement of the grooves in the projections is ensured by toothed wheels (q, r) connected to the disks, for the purpose of laying the grinding material in folds perpendicular to the profile according to the curvature.

4. Apparatus according to claim 2, characterized in that notching or punching tools (g) are arranged in front of the profiling disks, for the purpose of notching or punching the grinding material according to the desired profile in order to be able to bend and shape it more easily.

1 sheet of drawings.