Abstract
Bandsawing tests were conducted on plates of 15, 20, 25 and 30 mm in thickness of aluminum alloys, 7N01-T6. 13 mm wide blades of hook-tooth type with 3 or 6 teeth per inch were used for these tests. Blade speed and feed rate were varied over broad ranges, and the 2-component dynamometer was used to measure the cutting and feeding forces simultaneously. The main results obtained were as follows.(1) The cutting resistance increased with the increase of the feeding rate, while in the same feeding rate the cutting resistance decreased in the increase of the blade speed.(2) The variation in the cutting resistance with the slight change of the feeding rate increased as the blade speed decreased. Thus, high blade speed cutting is recommended for aluminum alloys.(3) The cutting force per tooth was approximatly equal to the feeding force per tooth.(4) It is desirable that the cutting force per tooth and the power required for cutting remain unchanged when workpiece thickness varies. From this point of view, the optimum cutting conditions with variations of workpiece thickness were determined as shown in Fig. 11.
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