The Research of the Optimal Cutting Parameters in an Auxiliary High Speed Spindle

• Main Authors: Wei-Chien HSU, 徐維謙
• Other Authors: Hai Wang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/78341988880754706750

碩士 === 明志科技大學 === 機電工程研究所 === 95 === Although High-Speed Cutting (HSC) technology with many benefits in manufacturing of high quality and efficiency, the HSM machine tools are so expensive that only few working shops own those machines. This paper purposes the idea of auxiliary High Speed spindle in the general type machining center. In the beginning schedule, we set the testing material to be aluminum alloy A6061, from the cutting parameter variables (cutting speed, the depth of cut, feeding rate of each cutting tool blade and the diameter of cutting tool), we employ the finishing surface roughness and cutting force acting on the workpiece to be the evaluating index. In addition, we introduce the Taguchi method analysis to reduce the experiment tasks and find optimizing cutting parameters for aluminum alloy High-Speed Machining. Finally, we construct a protective system for High-Speed spindle operation that applies a circuit to detect the temperatures rise in spindle bearing housing. When the temperature rises abnormally, protective system will terminate spindle’s work immediately. As a consequence, our project can make High-Speed spindles be used extensively, and promote the HSM technology growing up rapidly. In our end milling experiments, use of cutting speed 380m/min, feed rate 0.08mm per tooth and depth of cut 0.1mm are recommended to obtain the optimal surface finishing quality for the specific test range, the surface roughness obtained is about 4.07μm. Use of cutting speed 380m/min, feed rate 0.08 mm per tooth and depth of cut 0.1mm leads to the minimal value of resultant cutting force on the workpiece. The experimental result of cutting parameters provide useful information to the High Speed Machining operation in a metal cutting factory.