Ручные и измерительные инструменты Hoffmann Group 2026 - страница 453

GBP 57 Form 1A1 Synthetic resin-bonded surface and external cylindrical grinding wheels with CBN or diamond Surface grinding and external cylindrical grinding wheels, highly developed, with super-abrasives (CBN or diamond) in synthetic resin bonding. The high-strength, vibration-optimised VIB STAR grinding wheel base body permits a high damping for a smooth, even grinding process with high surface quality. ns nw ■ Extreme performance improvement (G-factor) compared to conventional grinding media. ■ The vibration-damping design of the carrier body significantly increases the working life. ■ Continuous self-sharpening effect due to even power consumption and avoidance of cyclical Longitudinal grinding sharpening operations. process Application: ■ General use for all materials from a hardness of about 58 HRC (limit of economic use). ■ For surface grinding and external cylindrical grinding (straight longitudinal grind- ing, recess grinding). External cylindrical grinding process ■ Can be used on all commercially available grinding machines for mould and die making and machine tool building e.g. Jung, ABA, Blohm, Elb, Mägerle, Geibel & Hotz, Jones & Shipman. ■ Cooling with emulsion or grinding oil required. ■ Superabrasive CBN/diamond grinding discs are always used with less than half the disc width compared to that for conventional grinding discs. ns Note: Before initial grinding, these grinding wheels can be dressed on a soft steel block at nw an infeed of approx. 0.02 mm. Alternatively with a dressing tool No. 599600. Sharpen grinding wheels (opening up the bonding) using sharpening stone No. 599840. Recess grinding process Surface grinding process Material Working speed Workpiece di- Workpiece ro- Infeed Lateral pass Feed rate (surface 59 vs = vc (m/s) mensions tational ae (mm) (longitudinal grinding) (mm) speed grinding, surface vf recom- maximum (rpm) Recess grinding ae Longitudinal Surface grinding grinding) (mm/min) mended permissi- (mm/min) grinding ae ae % ble (mm/min) (mm/min) High-alloy, 25 – 30 63 ⌀ < 25 150 – 300 Initial pass 1.5 0.015 0.01 – 0.05 30 – 40 % 10.000 – 20.000 hardened 25 < ⌀ < 50 80 – 150 Intermed. pass 0.5 0.005 – 0.01 steels, Finishing pass 0.1 0.002 – 0.005 0.002 – 0.005 hardened HSS Spark erosion 5 turns 1 – 2 passes 1 – 3 passes Carbide 15 – 20 63 ⌀ < 25 150 – 300 Initial pass 1 0.01 – 0.015 0.005 – 0.02 30 – 40 % 10.000 – 20.000 25 < ⌀ < 50 80 – 150 Intermed. pass 0.3 0.003 – 0.005 Finishing pass 0.1 0.002 – 0.005 0.002 – 0.005 Spark erosion 5 turns 1 – 3 passes 1 – 3 passes ​ 59 2010–​59 2035 ○ ○ ● ● ● ○ ○ ● 59 2040–​59 2065 ● ○ ○ ● CBN surface and external cylindrical grinding wheels for workpieces containing iron CBN grit for high performance grinding of long-chipping ferrous materials such as hardened high-alloy chrome steels and HSS tool steels (including powder metallurgy grades) and nickel-based alloys. CBN Specification: B126C50B-VIB-STAR HSS ble in s vaila s Also ang thickne coati 5 mm Coating thickness X mm 3 Shape U mm X mm 59 2010 200×15×51 eShop 1A1 15 3 53Y 53Y 53Y 53Y 53Y 53Y 59 2015 225×15×51 eShop 1A1 15 3 59 2020 VIB STAR precision grinding wheel CBN D×T×H (mm) 300×20×76.2 eShop 1A1 20 3 59 2025 B126 300×20×127 eShop 1A1 20 3 D X 59 2030 350×20×127 eShop 1A1 20 3 T= U 59 2035 400×20×127 eShop 1A1 20 3 H Diamond surface and external cylindrical grinding wheels for workpieces with zero iron content Diamond coating for high performance grinding of short chipping non-ferrous materials such as carbide, ceramic materials (PCS), hard coatings. D Specification: D126C75B-VIB-STAR W-Carbide. ble in l s o a vaila kness A ng th i c coati 5 mm Coating thickness X mm 3 Shape U mm X mm 59 2040 200×10×51 eShop 1A1 10 3 53Y 53Y 53Y 53Y 53Y 53Y 59 2045 VIB STAR precision grinding 225×15×51 eShop 1A1 15 3 59 2050 wheel DIAMANT D×T×H 300×20×76.2 eShop 1A1 20 3 59 2055 (mm) D126 300×20×127 eShop 1A1 20 3 59 2060 350×20×127 eShop 1A1 20 3 59 2065 400×20×127 eShop 1A1 20 3 453