Experimental study on cutting characteristics of thin walled structures with weak rigidity

Abstract

In this paper, the milling experiments of the 7075 Aluminum alloy thin wall specimens are carried out. In the dry cutting under the experimental conditions, the hard alloy cutter the use of the 7075 Aluminum alloy milling can get better quality of the thin-walled specimens, machining, cutting and cutting edge burr and the source, the chip adhesion phenomenon, in the selection of cutting speed for variable conditions, with the increase of cutting speed, milling of thin-walled specimen deformation gradually becomes smaller the thin, the specimen surface residual stress gradually increase, in the selection of feed speed conditions within the range of variables, with the increase of feed speed, the 7075 Aluminum alloy milling of thin-walled specimens. The deformation degree increased, thin specimen surface residual stress decreases gradually, in the selection of cutting depth conditions the range of variables, with the increase of cutting depth, the 7075 Aluminum alloy test milling of thin-walled parts is the greater the degree of deformation, thin-walled specimen surface residual stress was gradually decreased, residual stress the hour gradually thin plate specimens deformation amount is small, the milling of thin-walled specimens after deformation is inevitable.