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The Ultimate in Waviness Control For three decades Contour Fine Tooling has been continually refining its processes used for the production of Controlled Waviness diamond tools. Unlike ’tool normal’ machining processes, whether R-Theta or XZB, the now common two-axis machining methods typically using X & Z axes require a truly circular cutting edge as a foundation for workpiece form accuracy.
Initially cylindrical clearance tools were developed that exhibited sub-micron fundamental circularity or waviness, but the nature of the cylindrical form dictated that an elliptical error component resulted. Even today, tools that have a cylindrical clearance and/or a negative rake, as typically used to machine crystalline materials, will always have an elliptical error component. Since this is predictable it is often ‘programmed out’. For the ultimate in absolute waviness control, a conical clearance is combined with a 0° rake, thus avoiding the elliptical error component. Diamond tools with this geometry can be made with a waviness as low as 50nm PV over an arc of 100°. Contour pays a particular attention not only to the absolute waviness level of the tool but also to the smoothness of its form, integrity of its cutting edge, and the consistency of these parameters, tool after tool. In addition and as demonstrated below, the inherent waviness of the tool remains essentially the same all the way down the diamonds depth, and therefore throughout the tools life, relap after relap. It is small wonder that Contour Fine Tooling is regarded as the world leader in the supply of Controlled Waviness diamond cutting tools, for both the Electro-Optics and Ophthalmics industries.
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ClubCFT - Tool Ordering Made Easy |
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August 2011
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EDGE |
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Show Preview: Commitment to Ophthalmics Contour has long been a global supplier of diamond tools to the Ophthalmics industry, whether it be for the manufacture of IOL’s, Contact Lenses, or Spectacle Lenses. Testimony to it’s continued commitment toward these specialised applications, we’ll be in attendance at the following international events... |
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Contour KK Moves to New Premises |
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Contact Lens Manufacturers Association 6 - 8 October La Jolla CA USA www.clma.net |
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European Society of Cataract and Refractive Surgeons 17 - 21 September Vienna Austria www.escrs.org |
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Congresso Brasileiro de Optalmologia 5 - 8 September Porto Alegre Brazil www.cbo2011.com.br |
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Recent enhancements to the ClubCFT portal include the facility for existing customers to re-order a previously supplied tool. Once logged in, the customers entire tool history can be viewed as before, with the additional option to re-order a tool with the click of the mouse and a few key strokes. An order acknowledgement is then sent to the customer. |
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Contour Fine Tooling KK is pleased to announce its move to more spacious premises in Hachioji City, in the Western outskirts of Metropolitan Tokyo. The expansion has become necessary due to an increasing demand for our products and services. New state of the art machines are being added in order to provide better service and to manufacture more sophisticated tools for existing and developing markets. For more information contact: Mr. Yasu Akitake yasu@contour-diamonds.jp |
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Contour Fine Tooling KK Koshino 24-11 Hachioji City, Tokyo Japan Tel: +81 42 689 6632 Fax: +81 42 689 6633 |
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Employee Spotlight Jeff Tomlin Jeff heads up the operations side of our US facility in Marlborough, NH. Having worked with Contour since its formation in the United States back in 1987, and having previously worked at Pneumo Precision and Kollmogan Corp. as a Leadman and Supervisor |
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of the Diamond Turning Dept., Jeff has a rich experience in the industry. In his spare time Jeff enjoys motorcycling, fishing, hunting and being outdoors.
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