High-speed mainshaft bearing constant-pressure pre-loading device
A technology of constant pressure preload and high-speed spindle, which is applied in the direction of positioning device, drive device, support, etc. It can solve the problems of poor preloading method of high-speed spindle bearings, achieve the effects of improving rigidity, stable operation, and preventing deviation
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[0027] The present invention will be described in detail below with reference to the accompanying drawings.
[0028] refer to figure 1 and figure 2 , a high-speed spindle bearing constant pressure preloading device of the present invention comprises a spindle box 1, a first bearing 4 and a second bearing 10 arranged at the front and rear ends of the spindle box 1, and a first bearing 4 and a second bearing 10 arranged at the front and rear ends of the spindle box 1. The main shaft 2 in the second bearing 10, the first bearing 4 is fixed in the main shaft box 1 by a bearing front end cover 3 and a bearing rear end cover 5, and an inner sleeve is installed between the first bearing 4 and the second bearing 10 6. The second bearing 10 is installed in a sliding sleeve 12 with interference. The sliding sleeve 12 is in clearance fit with the spindle box 1. A spring 13 is provided on one side of the sliding sleeve 12, and a rear end cover 14 is provided on the rear side of the spri...
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