High-precision static-pressure main shaft
A hydrostatic spindle, high-precision technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problems of difficult maintenance in the later stage, difficult production and manufacturing, and the rigidity of the bearing oil film cannot be established. The effect of load resistance and deflection ability, and guarantee of wear resistance
Inactive Publication Date: 2015-12-02
HUNAN HANNUO TECH CO LTD
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Problems solved by technology
[0005] 3. The bearings at both ends cannot be 100% coaxial, so the stiffness of the bearing oil film cannot be established
[0006] 4. Manufacturing is difficult, so production cannot be stabilized, and later maintenance is difficult
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Embodiment Construction
[0017] The present invention and its specific implementations will be described in further detail below in conjunction with the accompanying drawings.
[0018] see Figure 1-2 , the present invention includes a front bearing sleeve, a connecting sleeve, an adjustment pad, a rear bearing sleeve, a main shaft, an oil seal ring, a throttle, and a pressure gauge, and is characterized in that: the two ends of the main shaft 1 are tapered, and the outer surface of the main shaft There are front bearing sleeves 2 and rear bearing sleeves 3 respectively on both sides of the front and rear bearing sleeves, return holes 4 and throttles 8 are provided in the front and rear bearing sleeves, and adjustment pads 6 are provided between the connecting sleeve 5 and the rear bearing sleeve 3 , The contact between the front and rear bearing sleeves and the two ends of the main shaft is provided with an oil seal ring 7, and one end of the throttle 8 is also provided with a pressure gauge 9.
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The invention discloses a high-pressure static-pressure main shaft and aims at providing the high-pressure static-pressure main shaft. The high-pressure static-pressure main shaft comprises a front bearing sleeve, a connecting sleeve, an adjusting pad, a rear bearing sleeve, a main shaft, oil sealing rings, throttlers and pressure measurers. The high-pressure static-pressure main shaft is characterized in that the two ends of the main shaft are conical, the two outer sides of the main shaft are provided with the front bearing sleeve and the rear bearing sleeve respectively, and flow returning holes and the throttlers are arranged in the front bearing sleeve and the rear bearing sleeve; the adjusting pad is arranged between the connecting sleeve and the rear bearing sleeve, the oil sealing rings are arranged at the contact parts of the front bearing sleeve and the rear bearing sleeve and the two ends of the main shaft, the pressure measurers are further arranged at one ends of the throttlers, the throttlers are thread-adjustable throttlers, one ends of the throttlers are provided with threads, the other ends of the throttlers are provided with sealing ring grooves, and oil inlet holes are formed between the threads and the sealing ring grooves. The high-pressure static-pressure main shaft is mainly used for high-precision numerical control machine tools.
Description
technical field [0001] The invention relates to a high-precision numerical control machine tool spindle, in particular to a high-precision static pressure spindle. Background technique [0002] The traditional spindle is assembled from a sleeve, a bearing body, a tapered spindle, a front taper sleeve, and a rear taper sleeve. The accuracy and performance of the product are guaranteed entirely by machining accuracy. Due to the complex structure, there are the following disadvantages: [0003] 1. The front end of the spindle is thick and the rear end is thin, so the rigidity and deflection are poor during high-speed operation, which is not suitable for high-efficiency heavy-duty cutting machine tools. [0004] 2. The main shaft is composed of multiple parts, and the shape and position tolerances such as roundness, cylindricity, and coaxiality are greatly reduced. [0005] 3. The bearings at both ends cannot be 100% coaxial, so the stiffness of the bearing oil film cannot be e...
Claims
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IPC IPC(8): B23B19/02
CPCB23Q1/70
Inventor 张智光薛超卢文龙周剑罗志敏
Owner HUNAN HANNUO TECH CO LTD