This crankshaft lathe with simple structure, easy operation and wide applicability. It is suitable for grinding the crankshaft neck and spindle neck of the engine in automobile, tractor and diesel engine repair shop, and can also be used as an external grinding machine for general external turning. Structural features: A. Machine tool by mechanical, electrical, hydraulic control, manual control. b, the left and right chuck of the base machine tool adopts adjustable cross chuck to improve the installation and adjustment efficiency of the workpiece. c, the workpiece is gripped by the center or chuck, driven by the motor of the head frame, manual feed grinding. d, the table is moving longitudinally-there are manual and maneuverable, and the table can only move quickly when maneuvering for jump gear or adjustment. e, the maximum adjustable vertical direction of the left and right cross chuck 110mm, transverse 2mm, the chuck also has a micro rotation adjustment, its range is 0-30�°. f, workpiece, grinding wheel, workbench, cooling pump, oil pump are driven by a separate motor. g. Hydraulic and electrical interlocking mechanism is adopted for workbench and grinding wheel frame, which can ensure safety no matter in adjustment or grinding due to operational errors. The grinding wheel frame is equipped with reliable protective cover.