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Ultrasonic cutting tool coated with diamond CVD
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A technology of cutting tools and diamond films, applied in dental tools, manufacturing tools, metal processing, etc., can solve problems that do not involve ultrasonic tools
Inactive Publication Date: 2007-10-17
FUNDACAO DE AMPARO A PESQUISA DO ESTADO DE SAO PAULO (FAPESP)
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[0005] While chemical vapor deposition (CVD) diamond coatings have been used in the manufacture of tools, they have not been described for use in ultrasonic tools (US5232568; US5142785; US5376444; US5139372; US4707384; US5022801; WO0962303; BR9500117)
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[0023] The invention will be described below in relation to a cutting tool, in particular for use with ultrasound, and of the type used for cutting, grinding and other related hard material processing, said tool comprising a basic body 1, having a working end 2 coated with a (thin or thick) diamond film obtained by means of CVD growth techniques and which after growth on the working end 2 defines a monolithic diamond layer.
[0024] In order to manufacture an ultrasonic tool coated with a CVD diamond layer, the following factors should be considered: the tool material should be a good ultrasonic transmitter and have a high ultimate strength against ultrasonic; it should be suitable for CVD diamond deposition, able to withstand extremely harsh Deposition environmental conditions, and allow the growth of diamond films of good quality and good adhesion; after deposition of CVD diamond films, the material should retain its properties for ultrasonic use, between the CVD diamond coa...
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Abstract
A cutting tool and process for the formation thereof. The cutting tool comprises a basic body (1) presenting an active end portion (2) coated with a diamond film obtained by the CVD growth technique, having superficial accidents (10) that are arranged and dimensioned to produce a substantial increase of the seating area for the diamond film and an increased degree mechanical interference with the latter. This invention refers to the cutting tool above and to the process of obtaining said tool, generally used for cutting, drilling, abrading and trimming, and particularly to be coupled to ultrasonic systems.
Description
technical field [0001] The present invention relates to a cutting tool and a method of forming said tool using a chemical vapor deposition (CVD) diamond (hereinafter referred to as CVD diamond) growth technique, and more particularly, to a tool and its forming method, which A tool is used for this type of ultrasonic equipment, which is generally used for cutting, drilling, grinding and finishing of any kind of surface made of various materials, such as ceramics, glass, bone, dentin, nitride, Carbide, marble, granite, etc., and especially for cutting hard materials. Background technique [0002] The use of ultrasound for applications such as cutting, drilling, grinding, dressing and cleaning has long been known. Its advantages are also well known, primarily the ability to machine material in hard-to-reach areas where rotational machining methods, or methods requiring high displacement amplitudes, are not possible. [0003] An important feature of ultrasonic methods, such as...
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