| 摘要 |
A cutting tool for use with a lathe, said cutting tool having a lead end and first and second sidewalls and a cutting piece formed on the lead end and comprising a rear portion and a lead portion extending forwardly from the rear portion, the lead portion being narrower in a transverse direction than a forward end of the rear portion and having two sidewalls located on opposite sides of the lead portion, the lead portion having an upper side angled downwardly and forwardly and a lower side angled upwardly and forwardly such that the upper and lower sides form a front end of the lead portion and the front end forms a leading cutting edge, wherein the rear portion includes further cutting edges each extending outwardly from a respective one of the sidewalls of the lead portion. |
