Conventional lathes of C630-1B,C630-1BG,CW6163B,CW6180B,CW61100 B can undertake various turning works such as turning internal and external cylindrical surface, conical surface and the other surface of revolution and end face etc.; tuning all kinds of common threads: metric thread, British thread, modulus thread, and diameter pitch thread etc. The dimensional accuracy of parts and axles processed by the machine tools can be up to IT6.