Examples of tool solutions 4 CAVITY HOLES Objective To reduce the number of tools needed by combining more operations in one. Machine without vibration to obtain narrow diameter tolerance and perfect surface roughness. Result Reinforced core diameter and extra guide pads on the solid carbide drills with helix perform extremely well. Reduced machining time No vibration Safe process Surface quality: Ra 0.8 Hole tolerance: H7-H8 A straight hole Core drill Machining process Solution A C7 PLUS Article no. 212120/999999 PATENT Predrill, standard or customised n = 1075 min -1 vf = 430 mm/min Article no. 212890/999999 n = 1530 min -1 vf = 765 mm/min C7 PLUS Solution B C7 PLUS Solution C C7 PLUS PATENTLÖSUNGEN Article no. 212891/999998 n = 1911 min -1 vf = 573 mm/min PATENT PATENT 6 SHOCK VALVE HOLES Article no. 212120/999998 n = 1911 min -1 vf = 573 mm/min Objective A fast and reliable process ensuring that the tolerances are achieved in the most efficient way. A typical challenge is to meet the demands for a good surface quality. Result One shot drill with extra guide pads and C7 PLUS™ coating creating a straight hole with excellent surface quality while maintaining high feed and a long tool life. The C3 coated thread milling cutter ensures a reliable threading process. SC step drill Thread milling cutter Article no. 12861/999989 n = 1794 min -1 vf = 628 mm/min C7 PLUS Article no. 256910.12x150 8
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