Transmission mechanism for spindle head of five-axis machine tool

A transmission mechanism for a spindle head of a five-axis machine tool, comprising:

• a spindle head;
• a dividing head arranged below the spindle head;
• a spindle transmission mechanism having a first motor fixed atop the spindle head and linked to a spindle transmission shaft through a pulley and a change gear;
• the spindle transmission shaft driving through a gear set a center shaft below a spindle to rotate about a first axis to thereby perform a cutting operation;
• a B-axis transmission mechanism having a second motor fixed atop the spindle head and linked to a B-axis transmission shaft enclosing the spindle transmission shaft through a pulley;
• the B-axis transmission shaft being linked through a gear set to a first worm wheel below the dividing head;
• the B-axis transmission shaft driving the B-axis transmission mechanism through the gear set and first worm wheel to displace pivotally about a second axis transversely oriented relative to the first axis;
• and,
• a C-axis transmission mechanism having a third motor fixed atop the spindle head and linked to a rotary shaft through a pulley;
• the rotary shaft being linked with a gear set and locked to a C-axis transmission rod therebelow;
• the C-axis transmission rod housing the B-axis transmission shaft;
• the C-axis transmission rod being locked with the dividing head to drive the dividing head to displace angularly about a third axis transversely oriented relative to the first axis within an angular range of 360 degrees.