AT515224A1 - Method for producing a spectacle frame - Google Patents

Abstract

The method for producing a spectacle frame, which consists of a spectacle middle part and eyeglass temples, is characterized by the following steps: a) providing a ski or a snowboard made of a plurality of layers glued together; b) machining the underside of the ski or the snowboard with a milling tool in a processing area from which the spectacle center part is made, for producing the inner contour of the spectacle means part; c) cutting two recesses from the processing area in the form of the spectacle lenses to be inserted into the spectacle middle part; d) milling circumferential grooves in the edge of the recesses; e) cutting out the circumference of the spectacle middle part from the processing area; f) fastening second eyeglass temple on the spectacle middle part.

Description

The invention relates to a method of manufacturing a spectacle frame, which consists of a spectacle middle part and eyeglass temples. Moreover, the invention relates to a spectacle frame produced by this method.

Numerous types of spectacle frames are known which are manufactured by various methods. Some of these eyeglass frames have only a low strength and flexibility, so that they can easily be damaged. Others have only a low resistance to cold, or their manufacture is associated with great costs.

It is an object of the present invention to provide a glass rack which has high impact and tear resistance, which is flexible and yet resistant to bending, and whose production is relatively inexpensive. In addition to an excellent material quality, the glasses frame also have an interesting design.

This object is achieved by the features of patent claim 1. Advantageous embodiments of the method are characterized in the dependent claims.

The spectacle frame according to the invention is characterized by the features of claim 10.

The invention provides that at least the spectacle middle part is made of a ski or of a snowboard, or a part of the same. The ski and the snowboard consist of several layers of different materials glued together. It is preferred that under a top, provided with a design thin plastic layer is a layer of aluminum alloy, under which a considerably thicker layer of foamed plastic or

Wood is lying. Such a construction of the composite material is preferred, but the ski or snowboard used to make the spectacle frame may also have a different construction.

In addition to providing such a ski or snowboard, from which a part exceeding the size of the groove part to be produced can be cut off, the production method according to the invention first provides that the underside in a machining area from which the groove center piece is to be made is machined with a milling tool in order to make the Form inner contour of the groove center part. Since the ski or snowboard thickener is the center of the spectacle to be made, the excess material on the underside of the ski (snowboard) is worn away. In order for the center part of the spectacle to obtain its predetermined thickness, a corresponding amount of material must be removed, depending on which region of the ski (snowboard) the center part of the spectacle is to be made of.

For this purpose, the ski or the snowboard or a part thereof is fixed on a workpiece table, which is particularly necessary when the milling operations are performed by a CNC milling machine.

In this processing step, not only is the thickness of the region from which the spectacle middle part is made reduced, but it is also provided with great advantage that in the case of milling, so-called nose pads or lugs stand in the way of the finished one

Eyeglass middle part rests against the nose of the user. In addition, it is proposed with great advantage that during the milling process, the lateral mounts for receiving

Hinges are formed or remain standing, with which the eyeglass temple are attached to the central part.

Subsequently, the spectacle middle part is cut out of the processing area. This is preferably done in such a way that initially two recesses are cut out of the processing area in the form of the spectacle lenses to be inserted into the spectacle middle part. This is again preferably done by a milling tool.

Then circumferential grooves are milled into the edge of the recesses into which the spectacle lenses are inserted after completion of the spectacle frame.

Subsequently, the circumference of the spectacle central part is cut out of the processing area, again preferably by the milling tool.

The inventive method is not limited to the time order of the above three steps, although this order is particularly advantageous because the

Eyeglass center remains fixed until cutting its circumference. In principle, however, it is also possible first to cut out the middle part of the groove at its circumference from the ski (snowboard) and then to form the recesses for the spectacle lenses and the circumferential grooves.

In another " Step also the eyeglass temple from the processing area, the thickness of which was previously reduced to the desired level, are cut out. These eyeglass temples or otherwise made temples, which may for example be made of metal, are then fastened with hinges to the lateral ends of the eyeglass center part.

The ski or snowboard, from which a larger number of spectacle frames according to the invention can be made, should belong to a non-marketable commons product, which is normally destroyed due to production defects. This means that the material from which the spectacle frame of the invention is made is particularly priced, if not free. By using it as eyeglass frames, this waste material is "recycled", thus saving the manufacturers of the skis from the cost of disposing of the waste material.

In addition to this not insignificant aspect, the material used is highly suitable for spectacle frames because it has the necessary flexibility high impact resistance and flexural strength, so that the glasses is difficult to damage. The material is highly resistant to heat and cold and UV-stable, making the eyeglass frame just perfect for ski goggles.

In addition, the topsheet of the ski or snowboard will generally have an interesting, contemporary-style design, which is also a key feature of a goggle.

An embodiment of the invention will be described below with reference to the accompanying drawings. Showing:

Figure 1 is a plan view of a ski, can be made from the seven eyeglass racks;

Figure 2 is a plan view of a piece of ski for making a spectacle frame;

FIG. 3 shows the cut-out parts of the spectacle frame according to FIG. 2 and FIG

Figure 4, the composite spectacle frame.

Figure 1 shows a plan view of a ski 1, on which are shown the contours of seven spectacle middle parts 2 with the associated temples 3, which are producible from the ski according to the inventive manufacturing method.

Figure 2 shows a portion 4 of the ski which can be detached to make a spectacle frame 2, 3. Ski section 4 includes bores 5 (only two of which are shown) which serve to fix the ski section on a tool table for machining. This attachment can also be made in other suitable ways.

The ski section 4 includes a processing section 6, from which material of the lower layer is removed from the underside of the ski, so that the remaining layer has the thickness intended for the spectacle frame. This milling operation is preferably performed with a CNC milling machine. In the process, lugs 7 for nose pads 8 (FIG. 4), which are later inserted into the lugs 7, and mounts 9 on the upper lateral edges of the center lens part 2 to be produced remain in a predetermined shape. The remaining areas preferably have a flat surface.

Correspondingly shaped tabs 10 are formed on the ends of the temples 3 to be inserted in the holders 9 during the milling process.

In this way, when the inner contour of the frame to be produced is milled into the underside of the ski section 4, the recesses 11 are first cut along the edges 12, after which circumferential grooves are milled into the edges 12, in which grooves (not shown) are inserted. Subsequently, the groove center part 2 is cut out of the processing area 6 along its outer contour 13.

Finally, the eyeglass frames 3 are cut out of the processing area 6 along their outer contour and inserted with their lugs 10 into the holders 9 of the eyelid middle part 2, thus completing the eyeglass frame illustrated in FIG.

Claims (10)

Claims 1. A method of manufacturing a spectacle frame consisting of a center portion of a spectacle and temple, characterized by the steps of: a) providing a ski (1) or a snowboard of a plurality of layers bonded together; b) machining the underside of the ski (1) or the snowboard with a milling tool in a processing area (6), from which the spectacle center part (2) is made, for producing the inner contour of the spectacle center part (2); c) cutting out two recesses (11) from the processing area (6) in the form of the spectacle lenses to be inserted in the groove center part (2); d) milling circumferential grooves in the edge of the recesses dl); e) cutting out the circumference (13) of the spectacle middle part (2) from the processing area (6); f) fastening second eyeglass temple (3) to the eyelid middle part (2). 2. The method of claim 1, wherein step a) comprises: separating a part (4) of the ski (1) or the snowboard, from which at least one spectacle middle part (2) is made. 3. The method of claim 1 or 2, wherein step a) comprises: fixing the ski (1) or the snowboard or a part (4) thereof on a workpiece table. 4. The method of claims 1 to 3, wherein step b) comprises: reducing the thickness of the processing area (6). 5. The method of claim 4, wherein step b) comprises: forming projections (7) for nose pads (8), .. The method of claim 4 or 5, wherein step b) comprises: forming hinges (9) for hinges for mounting the eyeglasses (3). A method according to claims 1 to 6, wherein steps c) and e) are performed by a milling tool. 8. The method according to claims 1 to 7, characterized in that after the steps a) and b) eyeglass temple (3) are cut by a milling tool. 9. Process according to claims 1 to 8, characterized in that the milling operations are performed by a CNC milling machine. 10. spectacle frame, characterized in that at least the spectacle center part (2) from a ski (1) or a snowboard or a part (4) thereof is made.