Made-in-Italy is synonymous with quality in all industries, and eyewear is no exception.
Anyone can tell whether the glasses they hold in their hands are of value or a low-grade product. More so than the brand or logo that’s on the frame, it’s the materials and overall robustness that make us appreciate the quality and the attention to details that was put into their production.
If we take a closer look, we’ll notice that the frame and the stems are held together by a joint with a tiny screw. In addition, two other screws are often used to hold the lenses in the frame.
The importance of these screws becomes immediately clear: the strength and robustness of sunglasses is directly dependent on them. The tightening must be precise, to allow the stems to move easily, and also secure to prevent the screws from loosening and the lenses from falling out of the frame.
Consider how many models there can be within a single brand, with countless frame shapes, dimensions, and thicknesses, along with vastly different materials, ranging from the featherlight titanium to currently-trendy wood. And with companies often tasked with producing eyewear for multiple brands, the number of possible combinations grows exponentially.
This is precisely the situation faced by a Kolver customer who, in pursuit of optimal production processes, required a line of screwdrivers capable of working with low torque settings, handling different torque values for each type of screw and material, and supporting advanced torque strategies. All of this, while ensuring the highest precision and repeatability.
The answer to this confluence of demands materialized in the form of the KDS-NT70 screwdriver, of the K-DUCER line. This tool supports a very-low torque range of 0.08 to 6.20 lbf-in (all with the same model!) and can handle up to 200 different applications simultaneously.
This flexibility makes it the ideal solution for the eyewear industry, characterized, as we have seen, by tiny screws and various types of materials. The different torque values, parameters, and sequences are easily set through the touchscreen interface of the control unit, and all screwdriving operations are stored and traceable, ensuring seamless integration with Industry 4.0.
While on one hand, flexibility and precision had found their answers with the KDS-NT, there was an additional need for something that could expedite the actual screwdriving process, in particular when it came to picking up and inserting the fasteners. The intricate and diverse production line, coupled with the small size of the screws, necessitated the development of a special vacuum attachment to couple with one of our standard screw feeders.
Thus emerged a version of the vacuum suction head with a unique narrow-tube shape, combined with a custom-designed insert to ensure the proper functioning of the suction process with such small screws.
Being result-oriented is the key to finding the right solution for every project. And developing customized products is an important part of this process with and for the customer.
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Featured products: KDS-NT70
Control units: KDU-NT