Multiple-cutting-edge long-hole boring head

A multiple-cutting-edge long-hole boring head comprises a boring head body, two cutter rests, boring cutters and lead chip discharge grooves. The two cutter rests are respectively fixed at two symmetrical ends of the boring head body, the boring cutters are fixedly arranged on the cutter rests, the lead chip discharge grooves are arranged at the positions of the cutter rests on the boring head body, and each boring cutter forms an angle with each cutter rest. Under the same processing conditions, cutting speed and amount of feed can be increased, processing efficiency and surface smoothness can be improved, processing quality is improved simultaneously, heavy boring efficiency is realized, and purpose for fine boring quality is achieved.