Abstract:

Due to the poor working conditions and high cost of replacement of disccutters, the manufacturers are getting stricter about the performance of the disccutter rings. The numerical model of rolling process of TBMused 17 inch disccutter is established by plastic forming software; the stress field and strain field of the disc cutter during rolling is analyzed by finite element simulation; and the influence of different parameters on disc cutter forming process is studied. The study results show that: 1) During the disccutter rolling process, the stress and strain are small, the strain distribution is uniform; with the main roller speed and the feed speed of the core roller increase, the equivalent effective stress decreases; while the strain does not vary. 2) The test on disc cutter ring rolling by matching the simulation parameters is carried out; the quality checking shows that the cutter ring circle, with continuous distribution and holds the same direction with main stress, coincides with the cutter contour.

Key words: disccutter ring, roll forming, numerical simulation, equivalent effective stress, equivalent effective strain