Machine tool

A machine tool, comprising a table;

• a standard;
• a head part;
• a main spindle mounted in said head part and having an axis;
• an electric motor in said head part for driving said main spindle in rotation;
• a tool changing device mounted in said head part for holding a tool holder carrying a tool, said tool holder being coupled to said main spindle;
• means for displacing said head part on said standard relative to said table, said displacing means including a rotary element rotated by said electric motor and adapted to displace said head part relative to said table;
• and a plurality of transmitting means for transmitting the rotation of said electric motor, said tool changing device including a rotary tool transporting wheel having at least one hole through which said tool holder extends to its working position, said plurality of transmitting means including first transmitting means arranged for transmitting the rotation of said electric motor to said rotary element so as to rotate the latter, a second transmitting means arranged for transmitting the rotation of said electric motor to said main spindle, and third transmitting means arranged for transmitting the rotation of said electric motor to said tool transporting wheel, each of said first, second and third transmitting means including a coupling arranged so that the rotation of said electric motor can be transmitted to said rotary element of said displacing means, said main spindle, and said tool transporting wheel, respectively.