The transmission structure of the spindle motor and the machine tool spindle is “integrated into oneâ€, so that the spindle components are relatively independent from the transmission system and the overall structure of the machine tool, so it can be made into a “spindle unitâ€, commonly known as “electric spindleâ€.
1. The characteristics of the electric spindle are constant torque and constant power. The constant power is more expensive, and the constant torque of the engraving machine spindle is more suitable.
2. The types are air-cooled and water-cooled. The air-cooling is mainly a small power spindle with several hundred watts in the early stage. Now the water-cooled electric spindle is basically used on the engraving machine, and the power is large and the noise is small.
3. Lubrication methods include oil mist and grease. The high-speed electric spindle of 24000 rpm or more adopts oil mist, which is supplied by special oil road. The installation and use are complicated; the engraving machine is mostly grease-lubricated, and the rotation speed can be adjusted at 6000-24000 rpm. speed.
4, support methods are 2 bearings, 3 bearings and 4 bearings, chemical agitator http://, 4 bearings suitable for engraving steel and other heavy loads, more than 1.5kW spindles used, general soft metal with 2 bearing bearings enough.
5, the spindle core frame has aluminum alloy and stainless steel "target=_blank> stainless steel welding form, most of the current spindle core frame is made of aluminum alloy, light weight, but large, and now some new products use stainless steel" target=_blank> Stainless steel welded core frame can reduce the spindle size at the same power. For example, the volume of the 1.5kW main shaft is about Φ80×215mm. The new stainless steel "target=_blank> stainless steel welded core spindle can achieve Φ65×210mm, which is more suitable for engraving. Machine use, precision mold manufacturing http:// stamping parts production, but the price is one or two hundred dollars.
6. Select the inverter power to be larger than the spindle power, so that the output power of the spindle can be fully utilized. The 1.2kW spindle is equipped with a 1.5kW inverter and the 1.5kW spindle is equipped with a 2.2kW inverter.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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