Reliance Diamond Tools Madhavaram, Chennai, Tamil Nadu

We offer single point diamond dressers in a wide variety of shapes and weights. Our re-settable tools have 2 or more usable points and can be sent back to us for expert resetting at a fraction of the original cost. Our standard or non-re settable tools are discarded after they have been completely consumed. All single point diamonds can be set into numerous shank configurations .For special shanks and threads simply supply us with a drawing.

RDT manufactures Indenters and Vickers for use in a machine shop environment.

We are the manufacturers of Premium quality Single point and Multi point diamond dressers, Natural diamond chisels, Burnishing tool, Natural and polycrystalline diamond turning etc.

PCD & CBN INSERTS FOR TURNING, BORING AND MILLING Superabrasive Materials There are many different types of tip available in the market designed to cope with an array of workpiece materials but for simplicity these may be grouped as follows Polycrystalline Diamond (PCD). Cubic Boron Nitride (CBN). PCD   PCD may be used for both roughing and finishing work, although it is usually most beneficial when tight tolerances or high surface finishes are required combined with the need for exceptionally long tool life. It is available in three grades of increasing crystal size and toughness but with an attendant decrease of edge quality. The finest grade is, therefore, only employed where superior surface finish is the main objective, the middle grade is the general purpose material giving long life with good component finishes; the coarse grade is used where maximum abrasive resistance is required and where finish is not critical. We will be pleased to offer advice on the selection of the best grade of PCD and cutting geometry for your particular application CBN If polycrystalline diamond has a major disadvantage, it is that being carbon based, it has an affinity to the free carbon found in most ferrous materials and is therefore generally unsuitable for machining steels and iron based materials. For this reason a range of products has been developed based on polycrystalline cubic boron nitride which have been demonstrated to be extremely cost effective especially with the harder ferrous materials (45-65 HR). Examples of materials that may be considered for machining with these inserts are listed below. Hardened Steels Chill Cast Iron Hardened Bearing and Tool Steels Stainless Steels Hard Facing Alloys which are Cobalt, Nickel and Iron based Grey Cast Iron CBN for Rough Machining: Different types of PCBN exist for the rough machining of the materials listed above which are usually selected on the basis of the required amount of stock removal. For roughing cuts in excess of 1mm depth the PCBN is usually supplied in the form of solid ISO tips for use in a clamp type tool holder, designed for use with negative top rake geometry. It is also usual to provide a strengthened cutting edge by means of a lapped or honed 'T' land. Where roughing cuts up to 1mm only are to be taken or when the applications require positive tool geometry, a brazable type of PCBN may be employed. In these cases the inserts are fabricated in a similar manner to diamond tips but usually with a polished 'T' land. CBN for Finishing: A specific form of CBN with reduced CBN content is supplied for use on fine finishing of hard ferrous materials. This material is capable, given the correct machining parameters, of producing turned finishes equal to those of ground components. The attendant cost savings found from switching from grinding to turning are often very dramatic. Again, the inserts are fabricated in a similar manner to those in PCD. Insert Shape: We follow the normal ISO convention for describing insert shape and geometry, for example an 12mm triangle may be designated as follows T P G B 12 02 02 T = Shape (triangular) P = Insert clearance angle (11°) G = Tolerance class (G) B= Type of insert, i.e., Hole and Chipbreakers 12 = Edge length (12mm) 02 = Insert thickness (2.38mm) 02 = Radius (0.2mm) CBN INSERTS PCD INSERTS PCD CBN MILLING INSERTS When ordering please specify PCD or CBNWe will be pleased to offer advice on the selection of the best grade of PCD and cutting geometry for your particular application.

 Several, usually seven, smaller diamond stones are mounted in spaced relationship across the working surface of the shank. Multi-Point dressers are an economical substitute for large carat weight single point diamond dressers. Heavier diamonds are used mostly for roughing larger wheels. These tools are available in 2, 3, 5, and 7 stone configurations and on standard, special and tapered shanks.

Several, usually seven, smaller diamond stones are mounted in spaced relationship across the working surface of the shank. Multi-Point dressers are an economical substitute for large carat weight single point diamond dressers. Heavier diamonds are used mostly for roughing larger wheels. These tools are available in 2, 3, 5, and 7 stone configurations and on standard, special and tapered shanks.

   Impregnated dressers are generally used to straight dress larger wider grinding wheels. These tools have a large concentration of diamond grit held together buy a strong metal matrix that will allow new fresh diamond grains to present themselves as the tool wears. Some important advantages are: Lower cost compared to larger carat diamonds. Higher dressing speed because of the large tool surface. Convenience because there is no need to rotate this dresser. Long tool life.

Feature : Long tool life,Higher dressing speed because of the large tool surface etc.

 Form dressers come in a variety of shapes including Dia-form, Chisel, Cone Tools, Blade Style and custom form tools.

   On most Dia-form machines two dressers are setup for use in tandem and both can be replaced or interchanged easily and quickly. Mounted adjacent to each other either the roughing and semi-finishing and finishing tools can be setup together. Both dressers are inclined at an angle of 5 degrees to the wheel centerline at the point of contact, providing the optimum cutting conditions. Various angles and radii are available on these forming tools. Our latest technology and optics allow us to manufacture very specific radii and angles on these form diamonds. If a customer has other specific dimensions not listed simply send a sketch. Although Dia-form dressers were designed for the Dia-form machine many operators use the mono variety of machines.

   Cone Tools are elongated diamonds cut to a conical shape with an included angle and radius on the point. Usually the angle is between 60 and 120 degrees. Steeper angles are more fragile, wear faster and break easier than larger angles (120 degree). These tools are mainly used for step , form and radius dressing. Cone Point diamonds can be manufactured in a variety ofshank sizes and lengths.

    Chisel dressers are used to form accurate profiles on grinding wheels. These tools all consist of a specific angle and a specific radius. A larger radius is generally used for roughing Larger radii and a smaller radius for finishing or producing smaller radii. However unlike the diaform these chisels need to be indicated for accurate performance. Various shanks, radii, flats and angles are available on these chisels. See below   30 degree included angle 0.05mm Radius 40 degree included angle 0.10mm Radius 50 degree included angle 0.20mm Radius 55 degree included angle 0.40mm Radius 60 degree included angle 0.50mm Radius 70 degree included angle 1mm Radius  

On most Dia-form machines two dressers are setup for use in tandem and both can be replaced or interchanged easily and quickly. Mounted adjacent to each other either the roughing and semi-finishing and finishing tools can be setup together. Both dressers are inclined at an angle of 5 degrees to the wheel centerline at the point of contact, providing the optimum cutting conditions. Various angles and radii are available on these forming tools. Our latest technology and optics allow us to manufacture very specific radii and angles on these form diamonds. If a customer has other specific dimensions not listed simply send a sketch. Although Dia-form dressers were designed for the Dia-form machine many operators use the mono variety of machines.