Turret head

A turret head comprising:

• an indexable turret;
• a tool mounting mechanism rotatably mounted to said indexable turret, said tool mounting mechanism having a tool mounting side, said tool mounting mechanism including means for selectively tightly affixing one of a rotary cutting tool unit and a turning tool to said tool mounting side of said tool mounting mechanism;
• a first gear mounted on said tool mounting mechanism;
• a driving gear for driving said first gear;
• an intermediate gear interposed between said driving gear and said first gear, said intermediate gear being mounted so as to always be in mesh with the driving gear, said intermediate gear being disposed so as to be selectively engageable and disengageable with the first gear;
• a unit drive shaft extending integrally with said intermediate gear toward said tool mounting side of said tool mounting mechanism;
• and
• a resilient member mounted so as to urge said intermediate gear toward said tool mounting side;
• whereby, when the rotary cutting tool unit having a rotary cutting tool is mounted to said tool mounting mechanism, the rotary cutting tool unit is engaged with said unit drive shaft so that the rotary cutting tool unit can be driven by the unit drive shaft and said intermediate gear is urged against said resilient member so that said intermediate gear is disengaged from said first gear.