Superabrasives Brand DIACOM
68Pages

CONTENTS Page New products 1-2 Contents 3 Types of grinding tools 4-6 Definition of grinding and general information 8 - 10 Instructions for the use of grinding tools 11 Designation, selection and ordering 12 - 16 Recommendations and tips 17 - 19 Instructions for the use of grinding tools 20 - 22 Grinding report 23 Review of grinding tools by type 25 - 63

INCORRECT HANDLING TROUBLESHOOTING Poor cutting capacity SPECIFIC REMOVAL PERIPHERAL SPEED CONCENTRATION BOND HARDNESS GRIT SIZE GRIT TYPE PROBLEM The table below lists the most common problems which may occur during grinding; these are mostly related to the selection of the grinding tool. In some cases, these problems can be eliminated only by using a different superabrasive tool (metal bonded, vitrified bonded), grinding procedure or machine.. CORRECT HANDLING DON’T ever handle the grinding tools roughly. DO always handle the grinding tools with extreme caution, especially those which...

DIACOM Pro HIGHLY DURABLE GRINDING TOOLS e grinding wheels, Compared to standard bakelit r temperature stability, s DIACOM Pro have a greate highly durable grinding wheel ngth. higher tensile and bending stre material better thermal conductivit y and lications, in case of extensive ing grinding app They are suitable for demand the grinding tool. ds on e thermal and mechanical loa removal and consequently larg grinding, arily in the field of CNC tool s have become established prim singly more grinding wheel worked materials and increa Highly durable DIACOM Pro are required due to ever harder...

EXTRA-THICK GRINDING WHEELS 1A1 a uniform ls are distinguished by These grinding whee ral wavy, is composed of seve abrasive layer which ge of wavy ents. The main advanta ed interconnected segm segments is an improv ct surfaces between the conta workpiece. surface quality of the e 1A1 eels is suitable for typ is type of grinding wh Th 0 mm. between 300 and 50 wheels with diameters NEW U = from 30 to100 mm faces ntact sur Wavy co dividual etween in b ! segments eels are nding wh -THICK gri EXTRA of the for: intended nding with the side ri - surface g ing el whe rical grind rnal cylind ing -...

Contents Page Types of grinding tools 6 Grinding and general information 8 • Basic grinding parameters • Basic factors of grinding • Superabrasive grit • Application of resin bonded CBN and diamond grinding tools Designation, selection and ordering 12 • Example of grinding tool designation • Shapes of grinding tools • Blade material • Grinding tool dimensions • Selecting the type and quality of superabrasive grit • Selecting the superabrasive grit size • Bond selection • Superabrasive grit concentration 12 13 13 13 13 14 15 16 Recommendations and tips 17 • Recommended peripheral speeds •...

GRINDING AND GENERAL INFORMATION Grinding with superabrasives is a procedure in which the cutting part of the abrasives consists of a large number of nonuniformly distributed cutting edges. These cutting edges are formed using superabrasive grit. Superabrasive particles are bonded into the abrasive ring of the grinding tool together with certain fillers using phenol-formaldehyde or polyimide resin. The abrasive ring on the grinding tool core, which provides appropriate strength and rigidity, reduces vibrations and the heat. Basic grinding parameters vs T s vs Ps vw a bk vs D n Ps a vw –...

Basic grinding factors - workpiece; material, shape, hardness type of grinding grinding parameters; vs, d, Qw’ grinding tool; appropriate shape and core, appropriately selected components of the abrasive ring dressing of the grinding tool cooling and lubrication type and condition of the grinding machine The efficiency and cost-efficiency of grinding with superabrasive grit are affected by all of the above factors. This catalogue focuses primarily on the correct selection of grinding tools, as well as on the interactions and our recommendations regarding other factors.. Superabrasive grit...

The proportion of use of abrasives with superabrasive grits increases on a constant basis. Comet uses superabrasive grit from the world’s most reputable manufacturers. hardness Friability Thermal conductivity Poor Medium Chemical resistance Thermal stability Good Strength SiC grit Aluminium Oxide grit CBN grit Diamond grit Comparison of the cost-efficiency of grinding of different types of steel. 100 90 80 70 60 50 40 savings 30 overhead 20 work 10 0 grinding tool Al2O3 10 CBN

APPLICATION OF RESIN BONDED CBN AND DIAMOND GRINDING TOOLS • tool grinding in the toolmaking industry • the production and sharpening of cutting tools for woodworking and metalworking such as: cutters, drills, reamers • • • • grinding of inserts for turning and cutting of tungsten carbides, high-speed steel and ceramics the automotive industry; grinding of cylinders, valves and shafts the glassmaking industry; polishing of automatic and decorative glass the aerospace industry; grinding of parts for jet engines 11

DESIGNATION, SELECTION AND ORDERING OF GRINDING TOOLS CORE MATERIAL ABRASIVE RING ABRASIVE GRIT BOND TYPE To be selected with respect grinding procedure GRIT SIZE Very fine Shapes of grinding tools These are designated according to EN 13236 and FEPA standards. Selection of the most rigid types is recommended, as massive cores are less sensitive to impact and prevent vibrations. Also, cup shapes are better for face grinding than wheel shapes.

SINTER-ALUMINIUM - Medium weight material used for rigid grinding wheel bases. It adequately dampens vibrations, removes heat and provides good mechanical strength. DURALUMINIUM - A heavier material which should be used when more stable bases are needed. It provides good mechanical strength and also better heat removal than sinter-aluminium. STEEL - Steel bases are significantly heavier than the other four types of materials. They are used whenever good mechanical properties need to be ensured even with thin abrasives, for example cutting-off wheels (1 Al R). BAKELITE - A lighter material...