Outer cooling-to-inner cooling cutter handle device and cutting device

The utility model relates to the technical field of cutting processing, in particular to an outer cooling-to-inner cooling cutter handle device and a cutting device. The cutter handle device comprises a cutter handle, wherein one end of the cutter handle is provided with an installing and clamping hole used for installing a cutter, the cutter handle is provided with a liquid inlet passage, the liquid inlet passage is communicated with the installing and clamping hole, the cutter handle device also comprises a conversion device, the cutter is rotationally arranged in the conversion device, and a cooling passage allowing cooling media to circulate is arranged in the conversion device and is communicated with the liquid inlet passage. In the use process, the cooling media enter the liquid inlet passage of the cutter handle through the cooling passage of the conversion device, and then enter the installing and clamping hole for realizing the continuous cooling on the installing and clamping cutter, the temperature on the cutter can be lowered in time, the cutter abrasion is reduced, the cutter fracture is avoided, and the efficiency and the processing precision are improved. The outer cooling-to-inner cooling cutter handle device and the cutting device have the advantages that the structure is simple, the operation is easy, the normal processing of a machine tool cannot be influenced, in addition, an inner cooling cutter can be normally used, and the processing efficiency is improved.