Spindle distance adjustable device of machine tool

The utility model discloses a machine tool spindle spacing adjustable device, and relates to the technical field of machine tool spindle boxes. The machine tool spindle spacing adjustable device comprises a base, two guide rails are fixedly connected to the top face of the base, a fixed spindle box is fixedly connected to the top faces of the two guide rails, sliding blocks are slidably connected to tracks of the two guide rails, and an adjustable spindle box is fixedly connected to the top faces of the two sliding blocks. Main shafts are fixedly installed on the adjustable main shaft box and the fixed main shaft box, adjusting devices are arranged on the top face of the adjustable main shaft box and the top face of the fixed main shaft box, the distance between the two main shafts is adjusted by controlling the position between the adjustable main shaft box and the fixed main shaft box through the adjusting devices, and the machining requirements of different workpieces can be met conveniently. And meanwhile