Cutting Temperature investigation when Heavy Milling Welded Aluminum-Thin-Walled Hollow Structure

摘要

Carbide tools were used to investigate the cutting temperature when heavy milling 6N01-T5 aluminum thin-walled hollow W-shape structures. The results showed that the value of cutting temperature at the area of weld seam or the intersectant ribbed slab was 40-60% times higher than that of cutting the single ribbed slab while cutting temperature for the weld seam was 20% times higher than that of the intersectant ribbed slab where severe adhesive wear often took place on the tool. The significance order of the cutting parameters was radial depth of cut, axial depth of cut, feed rate, spindle speed and increasing the spindle speed reduced the cutting temperature. The value of cutting temperature for the none wave edge tool was 40-80°C higher than that for the wave edge tool while the value of cutting temperature for the rake wave edge tool was 40°C bigger than that for the flank wave edge tool. However, the wave edge tool was more inclined to taking place severe adhesive wear which attributes to the coarser tool face. The cutting temperature of CPMJI was 80°C lower than that of dry cutting and the situation of severe adhesive wear seldom took place when CPMJI was used compared to dry cutting and cryogenic wind cooling.