DE2043587A1 - Manufacture of metal frames for glasses - Google Patents

Description

H e r s t e l l e n v o n B r i l l e n r a h m e n a u s M e t a l l The invention relates to the production of eyeglass frames from Lietall, such as gold, Silver, brass, aluminum, etc.

The fashionable shape of the glasses requires a diverse design the glasses frame. It is known to cast or from metal frames for glasses To punch and press sheet metal or to manufacture it from pipe sections. It is also known, glasses frame made of drawn profile wire with a retracted glass frame groove to produce in that the wire over a cross-section of the spectacle lens frame corresponding mandrel evzickt in one or more, then separate turns the separation point soldered or screwed and the panels produced separately be soldered onto the frame. This type of manufacture is required by the Punching, pressing and soldering work cumbersome and expensive and the soldering also reduces the flexural strength of the eyeglass frames used in the one used for this procedure Wire profile are very weak in themselves. The thin wire profile offers outside only Small mounting surfaces for locking and connecting parts.

According to the invention, the creation of glasses frames takes place under Output of pipe edge profiles from an im Relation to depth strength much greater height or

Width and, after bending them to form raw frames and closing them Parting line, the design of its the desired taste shape of its scope and its front side including all closing and connection approaches for the bridge, zeitensiteg, Ear hook cheek part etc. from one piece by copy milling, as well as an additional one Decorating the diaphragm with facets, notches, structures using hard metal or Diamanttråsen.

The main advantage of this new method is, among other things, 13 the glasses frames in their taste and technical design 1n one work step and can be manufactured in one piece. this means that the previously necessary ones fall Tools and operations for the separate manufacture of the different shaped decorative panels and away the soldered connections necessary for their connection to the wire frame. By the omission of the large soldered connections with decorative panels is retained by the frames also their flexural strength. The attachment points for soldered or screwed connections can due to their formation by milling can easily be sized large enough to be safe To achieve connections. Other advantages of the procedure are in the following Description listed.

Various exemplary embodiments of the subject matter of the invention are shown in the drawing shown in eleven figures, which show: Fig. 1 a number of examples Cross-sectional shapes of profile wires, Abb0 2, 4 to 6 and 8 to 11 different Forms of glasses frames in front view, Fig. 3 one to Fig. 2 and Fig. 7, one horizontal section belonging to Fig. 6.

Fig. 1 shows, for example, various cross-sections of at the new process for using profile wires. Like the cross son custom reveal, they all have one in proportion to their depth much larger width or height. This enlargement of the Cross-sections of the profile wires provide material, as is the case with the various Versions (Fig.

- Up to 11) of glasses frames for one-piece molding of decorative panels as well as connection approaches is needed.

The profile wires are wound in a mandrel, the cross-section of which corresponds to the inner shape of the desired glasses frame. The winding of the glasses frame can be done piece by piece or continuously similar to wire screws. In the latter case the individual courses are cut off. The Linzel Geese are then soldered by their separation points closed so that they can be used on an internal collet of a copy milling machine can be stretched. The inner collet has gripping plates, the outer circumference of which together corresponds to the shape of the inner thread of the respective glasses frame. Opposite to A template is clamped to the scanner of the copy milling machine, its outer circumference that of the glasses frame to be produced and its position corresponds exactly. One A copy milling machine suitable for this is in the German Patent Publication.

described.

The eyeglass frame 12 shown in Fig. 2 and 3 can consist of a of profiles a, b, c, d (Fig. 1).

It has a wide decorative panel 13 in its upper half, while the lower half 14 is reduced to a width sufficient for the glass mount. On the outer side of the frame 12 / soldering or screwing the Parting line 12 'a closing block 15 with a wide front surface for attaching a Cheek part 16 and on the opposite side an approach 17 for soldering a nose bridge 18 and below it an attachment point 19 for the holder of the nose support plate on. The decorative panel 13 is at its upper edge by arcuate, means Carbide or diamond milling tool in high-gloss embossings 19 decorated.

Fig. 4 shows an eyeglass frame 20, in which the side parts are widened to decorative panels 21, 22, while the other and lower part 23, 24 too sufficient for the glass socket Strength are reduced. I, ie parting line 20 ′ can be arranged at the upper end of the outer decorative panel 22.

In the embodiment according to FIG. 5, only the upper part is 26 of the frame 25 compared to the other socket parts 27, but less in this case widened. This embodiment is particularly suitable for connection with both Spectacle frame bridging bars. The separation point 25 'is just behind the overlying transition from the narrow 27 to the wide frame part 26.

The embodiment of the frame 28 according to Fig. 6 is from one Profile wire e (Fig. 1) designed, because of the obliquely rearward protruding locking block RY, which consists of the correspondingly obliquely directed, upper part e 'of the cross section of the profile drift e is built.

Figs. 8 to 11 show glasses frames with an upper, Fig. 10 also with lower decorative panel and on the same various additional decorations, in Fig. 8 as bink notches 29 in the surface, in Fig. 9 as upper edge bevel 30, in Fig. 10 as curved edge millings 31 and in Fig. 11 as etructural decorative millings 42 in the area of the bezel. This is not necessary because of these decorations in the material the procurement and application of special decorative items.

The process allows the variation of models with small quantities. The processing of profile wire results in less weight and material and thus a discount.

There are also fewer dirty spots. Also good forms of industry are achieved with fashionable elegance. There are fewer polishing operations Milling with industrial diamonds achieved.

Claims (2)

Claims 1o process zunt manufacture of spectacle frames from profile wire Winding the same onto a mandrel, the outer circumference of which corresponds to the inner circumference of the eyeglass frame corresponds and where the same on the one hand flavored moldings z. B. Ornamental panels and on the other hand technical moldings z. B. Approaches such as locking blocks or such For ear hook hinged jaws, nose bridges, holder for nose support plates, connecting bars etc. have, characterized by the exit of tubular profiles, from one opposite the glass frame much coarser width or height, bending the profiles to the raw Framing, closing it and then creating the above mentioned facial works and one-piece engineering molds using the molds corresponding to them Templates by copy milling on a suitable machine. 2. The method according to claim 1, characterized in that the decorative panels daw (21, 22) the glasses frame (12) additionally by means of hard metal or diamond milling tools manufacturable pasettes, milled-out or edge millings, structures and the like are decorated. L e r s e i t e