Gas-film stepless variable damping device of gas static-pressure main shaft
A gas static pressure, variable damping technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve problems such as spindle heating, improve dynamic characteristics, improve accuracy and work adaptability, and improve system stability sexual effect
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[0020] The present invention will be described in detail below in conjunction with the drawings.
[0021] Refer to the attached drawings:
[0022] According to the stepless variable damping device for a gas static pressure main shaft of the present invention, a shaft sleeve 2 is coaxially installed with the main shaft 1, and the gap between the shaft sleeve 2 and the main shaft 1 forms an air film 4, which provides the main shaft 1 support. The air jacket 3 is fitted on the outer wall of the shaft sleeve 2, and the inner wall of the air jacket 3 is provided with a number of protruding contact portions uniformly along the circumferential direction, and the contact portions extend along the axial direction. A number of evenly distributed air chambers are enclosed on the outer wall of the shaft sleeve 2 32. The contact portion is connected to the outer wall of the sleeve 2 in a sealed manner. The air chamber 32 is in communication with the air film 4 through the throttle hole 21, th...
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