What is the difference between mechanical spindle and electric spindle?
Time:2023-11-27
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Electric spindle is a new technology that integrates machine tool spindle and spindle motor in the field of CNC machine tool in recent years. It is to place the high-speed motor inside the spindle part, and obtain the speed and torque required by the spindle through the control system, so it is also known as the built-in electric spindle.
This move eliminates the transmission link of belt, gear or coupling, and realizes the "zero transmission" of the machine tool spindle system, which is a major change in the transmission system of CNC machine tools.
Mechanical spindle refers to the spindle that rotates the workpiece and the tool on the machine tool. It is normally classified into the belt drive spindle and direct drive spindle. It is usually composed of a spindle, bearing, transmission, etc. The machine is mainly used to support gear, pulley and other transmission parts, transfer movement and torque, such as the machine spindle.
Electric spindle and mechanical spindle each have their own advantages and disadvantages:
The electric spindle is relatively small in size, and can be stepless speed regulation, which is convenient to realize semi-automation. Because of fewer transmission links, so the processing accuracy is high. The disadvantage is that a series of automatic control equipment is required, the cost is high, the repair and maintenance is complex, and the need for professionals.
The mechanical spindle changes speed through a gearbox, which is large but easy to maintain. Due to the many transmission links, the machining accuracy is not as high as the electric spindle. It is a common equipment for general mechanical processing.
Usually, the electric spindle is used for CNC machinery, and the mechanical spindle is used for ordinary machine tools.