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What is the difference between electric spindle and mechanical spindle

What is the difference between electric spindle and mechanical spindle

Electric spindles are generally used on CNC machines, while mechanical spindles are used on general machine tools.

Reason: low-cost lathes cannot use electric spindles because Steering Drag Link of the high cost. However, high-end lathes require high spindle accuracy, and the electric spindle with large heat generation can easily form thermal deformation and then change the height of the headstock, so it is not suitable for use on high-precision lathes.

Electric spindle is a new technology that integrates machine tool spindle and spindle motor in the field of CNC machine tools in recent years. The main drive system of the high-speed CNC machine tool cancels the pulley drive and gear drive. The main shaft of the machine tool is directly driven by the built-in motor, thus shortening the length of the main transmission chain of the machine tool to zero, realizing the "zero transmission" of the machine tool.

Mechanical spindle refers to the axis that drives the workpiece or tool to rotate on the machine tool. The main shaft components are usually composed of main shaft, bearings and transmission parts (gears or pulleys). In the machine, it is mainly used to support transmission parts such as gears and pulleys, to transmit motion and torque, such as machine tool spindles; some are used to clamp workpieces, such as spindles.