PFERD Tools Main Catalogue NR.: 1488 - Strona 561
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Proszę wypełnić wszystkie pola obowiązkowe (podkreślone na czerwono)
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Proszę wypełnić wszystkie pola obowiązkowe (podkreślone na czerwono)
Wersja tekstowa PFERD Tools Main Catalogue Strona 561
Industrial power brushes Cutting speeds and recommendations for use Determining the recommended rotational speed ➊ Select brush type. ➋ Read the recommended cutting speed. ➌ Determine the rotational speed using the Recommendations for use: ➊ Brush type brush diameter and cutting speed. The recommended cutting speed ranges [m/s] depend on the respective application and lie below the maximum permitted cutting speed. ➋ Cutting speed End brushes 5–15 m/s Cup brushes 15–45 m/s Shank-mounted wheel brushes 15–40 m/s Wheel/bevel brushes with arbor hole/ threaded Incorrect (1) Correct (2) Only use the wire tips (Fig. 2). See diagram below ➋ Recommended cutting speed [m/s] for wheel/bevel brushes with arbor hole/threaded [m/s] Application 10 15 20 25 30 40 45 50 55 35–45 m/s knotted Deburring/ edge breaking 35 30–40 m/s 25–40 m/s crimped 15–30 m/s 35–55 m/s knotted 30–40 m/s 30–35 m/s 20–40 m/s crimped 15–35 m/s 15–30 m/s 35–55 m/s knotted 30–40 m/s Weld dressing 30–45 m/s crimped Visible trim lengths Short visible trim lengths give a stiffer trim surface, resulting in more aggressive brushing action. Longer trim lengths are more flexible, giving a softer brush performance that produces a more uniform finish, even on irregular surfaces. Filament diameters Thick filament ■ An aggressive brushing effect with a coarse surface finish, as fewer wire tips are in contact with the surface of the workpiece at the same time. Thin filament ■ A soft brushing effect with a fine surface finish, as many wire tips are in contact with the surface of the workpiece at the same time. ■ A longer tool life for the brush due to the higher level of flexibility of the filaments. 35–40 m/s knotted Cleaning/ roughening of surfaces Exception In the case of brushes with plastic filament material, it is not only the wire tips that can be used, but 2–3 mm of the filaments. In the case of stationary brushes, machining should be carried out under the middle of the brush (see Fig. 2). Self-sharpening effect The self-sharpening effect can be improved during use by changing the brush operating direction. 15–30 m/s Removal of scale/ mill scale Contact pressure and working position 25–40 m/s The colour bars correspond to the colour codes of the filament materials (see page 4). Solutions to problems ➌ Recommended rotational speeds [RPM] n [RPM] Problems Brush dia. D [mm] 10 15 20 25 30 40 50 60 75 80 100 115 125 150 175 200 250 300 1,000 1 1 1 1 1,250 1 1 1 2 1,500 1 1 2 2 1,750 1 1 2 2 2,000 1 2 2 3 2,500 1 2 3 3 3,000 2 2 3 4 3,500 2 3 4 5 4,000 2 3 4 5 4,500 2 4 5 6 5,000 3 4 5 7 5,500 3 4 6 7 6,000 3 5 6 8 6,500 3 5 7 9 7,000 4 5 7 9 7,500 4 6 8 10 8,000 4 6 8 10 10,000 5 8 10 13 12,000 6 9 13 16 14,000 7 11 15 18 16,000 8 13 17 21 20,000 10 16 21 26 22,000 12 17 23 29 25,000 13 20 26 33 2 2 2 3 3 4 5 5 6 7 8 9 9 10 11 12 13 16 19 22 25 31 35 39 2 3 3 4 4 5 6 7 8 9 10 12 13 14 15 16 17 21 25 29 34 42 46 52 3 3 4 5 5 7 8 9 10 12 13 14 16 17 18 20 21 26 31 37 42 52 58 65 3 4 5 5 6 8 9 11 13 14 16 17 19 20 22 24 25 31 38 44 50 63 69 79 4 5 6 7 8 10 12 14 16 18 20 22 24 26 27 29 31 39 47 55 63 79 4 5 6 7 8 10 13 15 17 19 21 23 25 27 29 31 34 42 50 59 67 5 7 8 9 10 13 16 18 21 24 26 29 31 34 37 39 42 52 63 73 6 8 9 11 12 15 18 21 24 27 30 33 36 39 42 45 48 60 72 Cutting speed (v) = 7 8 10 11 13 16 20 23 26 29 33 36 39 43 46 49 52 65 79 8 10 12 14 16 20 24 27 31 35 39 43 47 51 55 59 63 79 9 11 14 16 18 23 27 32 37 41 46 50 55 60 64 69 73 10 13 16 18 21 26 31 37 42 47 52 58 63 68 73 79 13 16 20 23 26 33 39 46 52 59 65 72 79 16 20 24 27 31 39 47 55 63 71 79 Example: RBG 11512 ST Cleaning surfaces Brush dia. D: 115 mm Cutting speed: 39 m/s Rotational speed: 6,500 RPM dia. (D) x π x rot. speed (n) 1,000 x 60 Possible solutions Inadequate ■ Increase rotational speed or use larger brush diameter at brushing the same rotational speed. effect ■ Choose a brush with shorter trim length. ■ Use a brush with thicker filaments. ■ Reduce rotational speed or use Brushing smaller brush diameter at the effect too same rotational speed. great ■ Reduce the contact pressure. ■ Choose a brush with longer trim length. ■ Use a brush with thinner filaments. Surface is ■ Use a wider brush. too rough ■ Use a brush with thinner filaments. and ir■ Increase the rotational speed. regular Surface is ■ Use a brush with thicker filaments. too finely ■ Choose a brush with shorter polished trim length. and shiny ■ Reduce the rotational speed. ■ Change the working position Secondof the brush in relation to the ary burr workpiece. formation ■ Choose a brush with shorter trim length. ■ Use a brush with thicker filaments. Catalogue Page 8 9 8
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