Patent ID: 8777529

Claim:
A rotary coolant adapter system including a rotary coolant adapter designed to attach to a rotary tool holder, the rotary coolant adapter being for supplying coolant to a rotary tool having a flow path in the tool for coolant and having at least one outlet for the coolant in the cutting end of the tool, the at least one outlet being coupled to the flow path, the adapter system comprising: a stationary outer housing comprising a portion of the rotary coolant adapter; a supply tube for the coolant, coupled to the stationary outer housing; the rotary tool holder, configured for receiving the rotary tool, the rotary tool being rotatable about a rotational axis; an annular coolant manifold including at least one bellows element surrounding a portion of the rotary tool holder, the supply tube being coupled to the annular coolant manifold; the rotary tool holder including an internal radial feed tube supplying the coolant along a radial direction with respect to the rotational axis to the coolant flow path in the tool; whereby coolant may be supplied from a stationary external supply through the coolant supply tube to the annular coolant manifold and from the annular coolant manifold to the internal radial feed tube and from the internal radial feed tube to the flow path in the tool, and from the flow path to the at least one outlet in the cutting end of the tool.