WO2012174761A1 - 基于液压系统调控的非均匀分布预紧力可控高速主轴及其控制方法 - Google Patents
基于液压系统调控的非均匀分布预紧力可控高速主轴及其控制方法 Download PDFInfo
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- WO2012174761A1 WO2012174761A1 PCT/CN2011/077155 CN2011077155W WO2012174761A1 WO 2012174761 A1 WO2012174761 A1 WO 2012174761A1 CN 2011077155 W CN2011077155 W CN 2011077155W WO 2012174761 A1 WO2012174761 A1 WO 2012174761A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/262—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members with means to adjust the distance between the relatively slidable members
- B23Q1/265—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members with means to adjust the distance between the relatively slidable members between rotating members
Definitions
- the invention belongs to the field of rolling bearing performance regulation and application of a high-speed spindle, and relates to a non-uniform hook preloading controllable high-speed spindle and a control method thereof based on hydraulic system control.
- the rolling bearing directly affects the dynamic performance of the high-speed spindle, especially under the complicated service conditions of the spindle system.
- the spindle requires high-speed light load and low-speed reloading.
- the service performance can be controlled to meet the dynamic performance requirements of the spindle, thus ensuring high precision and high reliability of high speed machining. Therefore, how to adjust the service performance of rolling bearing stiffness, temperature and rotation precision in real time to adapt to the complex working conditions of the spindle system is crucial.
- bearing preload control technology is one of the most effective methods for bearing service performance adjustment.
- bearing pre-tightening technology adopts positioning or constant pressure constant value pre-tightening method.
- the value of pre-tightening force is mostly determined based on experience or experimental data.
- This constant pre-tightening technology can no longer meet the requirements of high-speed spindle for bearing service performance under complex conditions. Requirements. To this end, many research and academic institutions at home and abroad have carried out a lot of research on bearing preloading controllable technology and achieved certain results.
- the preloading self-adjustment based on the feedback feedback closed-loop active control method and the pre-tightening adjustment method based on the shafting speed effect or the material thermal effect are mainly proposed; in the pre-tightening control mechanism, there is piezoelectric-based Active pre-tightening mechanism for materials, hydraulics, electromagnetic devices and electrostrictive materials.
- the pre-tensioning control device described above is a pre-tightening force that applies an axially even distribution to the rolling shaft 7.
- Rolling bearings as key precision components for high-speed spindles, have a significant impact on their serviceability under complex conditions due to subtle changes in structural dimensions, assembly, and operating loads. Simply apply uniformity to the bearing
- the distributed axial preload force can not effectively eliminate the non-uniform distribution of the axial and radial clearances, nor can it meet the requirements of the non-uniform hook distribution of the high-speed spindle under certain working conditions. From a more elaborate point of view, the application method and size of the rolling bearing preload force can be explored, so that the service performance of the rolling bearing can achieve "excellence". Therefore, it is particularly urgent to study the non-uniform distribution preload and its application device according to the requirements of special working conditions or clearance.
- the present invention provides a non-uniform distributed pre-tightening controllable high-speed spindle based on hydraulic system control and a control method thereof, and reduces the temperature rise of the high-speed rolling bearing by online regulation of the non-uniform distribution preload force , to improve its stiffness, rotation accuracy, and obtain a spindle with excellent dynamics over the entire operating speed range.
- the present invention provides a non-uniform distributed preloading controllable high speed spindle based on hydraulic system control, comprising a main shaft, a rolling bearing is mounted on the outer circumference of the main shaft, and the hydraulic bearing preloading is mounted on the rolling bearing at the front end of the main shaft.
- the hydraulic system, the hydraulic regulating pre-tightening system is regulated by a regulating device, wherein the hydraulic regulating pre-tightening system comprises a hydraulic operating sleeve acting on the outer circumference of the rolling bearing, installed on the outer periphery of the hydraulic operating sleeve and formed with the hydraulic operating sleeve.
- the hydraulic oil chamber is evenly distributed in the circumferential direction
- the regulating device includes a conditioning circuit connected to the temperature sensor, and the output end of the conditioning circuit is connected to the input end of the single chip by A/D conversion, and the output end of the single chip is D/A
- the conversion connection has a multi-way switch, and the multi-way switch is connected to the electro-hydraulic servo valve by power amplification, and the electro-hydraulic servo valve is in communication with the inside of the hydraulic oil chamber;
- the end cover is provided with an oil inlet penetrating the hydraulic oil chamber.
- the rolling bearing has a rated dynamic load of 41.5 KN;
- the invention also provides a control method for the non-uniform distributed pre-tightening controllable high-speed spindle based on the hydraulic system control.
- the temperature sensor measures the temperature analog signal of the outer ring of the bearing through the conditioning circuit, and then After A/D conversion, input to the MCU for processing, the MCU will check the data of the pre-tightening force value of each pre-tightening control point under different bearing external temperature, generate control command, and then pass D/A conversion and pass
- the switch is sent out, and finally the displacement of the spool of the electro-hydraulic servo valve is controlled by power amplification, thereby controlling the pressure into the hydraulic oil chamber, and finally the pre-tightening force of the rolling bearing is adjusted by the hydraulic actuator.
- the non-uniform distribution pre-tightening controllable high-speed spindle and the control method thereof based on the regulation of the hydraulic system have at least the following advantages:
- the invention breaks through the traditional uniform distribution pre-tightening force, and pre-tightens different control points of the bearing outer casing at different temperatures. Precision control of the force, achieving high-speed, high stiffness, low temperature rise, long life and other technological breakthroughs.
- Through the closed-loop online control of the pre-tightening force of the non-uniform hook distribution of the main shaft support bearing Through the closed-loop online control of the pre-tightening force of the non-uniform hook distribution of the main shaft support bearing, a high-performance high-speed spindle under different working conditions can be obtained.
- FIG. 1 is a schematic view showing the overall structure of a non-uniformly distributed preloading controllable high speed spindle based on a hydraulic system control according to the present invention
- Figure 2 is a schematic view showing the distribution of the hydraulic oil chamber of the present invention (taking eight as an example);
- Figure 3 is a structural view of the hydraulic oil chamber.
- the present invention is based on a non-uniform distribution preload force controllable high speed main body regulated by a hydraulic system.
- the shaft comprises a main shaft 1 , and a rolling bearing 3 is mounted on the outer circumference of the main shaft 1 .
- the rolling bearing 3 at the front end of the main shaft 1 is mounted with a hydraulic regulating pre-tightening system, which is regulated by a regulating device.
- the hydraulic regulating pre-tightening system comprises a hydraulic operating sleeve 8 acting on the outer circumference of the rolling bearing 3, an end cover 4 mounted on the outer periphery of the hydraulic operating sleeve 8 and forming a closed cavity with the hydraulic operating sleeve 8, said hydraulic
- the closed cavity formed between the movable sleeve 8 and the end cover 4 is a hydraulic oil chamber 5, and the end cover 4 is provided with an oil inlet passage penetrating the hydraulic oil chamber 5, and the oil inlet passage is provided with an oil inlet port. 6.
- a temperature sensor 9 is mounted on the hydraulic operating sleeve 8.
- the hydraulic oil chamber 5 is formed by combining a hydraulic operating sleeve 8 and an end cover 4, the number of which is an integer, uniformly distributed in the circumferential direction of the main shaft 1, and its position and temperature.
- the position of the sensor 9 is close, so that the adjustment of the magnitude and distribution of the preload force of the rolling bearing 3 can be achieved by adjusting the pressure of the oil in each of the hydraulic oil chambers 5.
- the regulating device comprises a conditioning circuit 10 connected to the temperature sensor 9, the output end of the conditioning circuit 10 is connected to the input end of the single chip microcomputer 12 through the A/D conversion 11, and the output end of the single chip microcomputer 12 is connected by D/A conversion 13
- a multi-way switch 14 which is connected to the electro-hydraulic servo valve 16 after power amplification 15 , and an input system of the electro-hydraulic servo width 16 is also connected with an oil supply system, and at the same time, the electro-hydraulic servo valve 16 passes
- the oil inlet passage is connected to the inside of the hydraulic oil chamber 5.
- the hydraulic regulating preloading force system is located on the front end rolling shaft 7?3, and the hydraulic operating sleeve 8 is used as a preloading force executing mechanism;
- a plurality of temperature sensors 9 are placed on the hydraulic operating sleeve 8, and a plurality of temperature sensors 9 measure the temperature analog signals of the outer ring of the bearing (near the pre-tightening control point), after the conditioning circuit 10, and then after A/D conversion 11
- the input is input to the single chip microcomputer 12 for processing, and the single chip microcomputer 12 checks the data of the preloading force value of each preloading control point under the temperature of the outer ring of different bearings, generates a control command, and passes the D/A conversion 13 through the multiplex switch 14
- the sending is performed, and finally the displacement of the spool of the electro-hydraulic servo valve 16 is controlled by the power amplifier 15, and then the control is performed.
- the pressure at the port 6 is such that the oil inlet 6 communicates with the hydraulic oil chamber 5, so that the pressure oil can act on the hydraulic actuator sleeve 8, and the hydraulic actuator sleeve 8 adjusts the tightening force of the rolling bearing 3.
- the electro-hydraulic servo valve 16 and the hydraulic oil chamber 5 are connected to the oil supply system 17 to form a circuit.
- the invention adjusts the pressure and the presence or absence of the oil entering the respective hydraulic oil chambers 5 by adjusting the respective electro-hydraulic servo valves 16, thereby realizing the adjustment of the magnitude and distribution of the pre-tightening force.
- the non-uniform distributed preloading controllable high speed spindle based on hydraulic system control of the invention adopts the following main components:
- Rolling bearing Select SKF 3306A-Z, bearing inner diameter ⁇ 30, rated dynamic load 41.5 ⁇ .
- the round nut and the end cap are used to realize the bidirectional fixing of one end of the bearing.
- Probe type armored platinum thermal resistance temperature sensor FY-ZWC-2012, Xi'an Fangyuan Electronics Co., Ltd.
- A/D Converter ADC0808, National Semiconductor, USA.
- Power Amplifier Devices such as IRF540 and MUR820 are used by ST.
- Multi-way switch 74HC4051, PHILIPS company.
- Electrohydraulic service valve HY120P pressure servo valve, Lifan Hangyu.
- Fuel supply system exroth hydraulic pumping station, Rexroth.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
公开了一种基于液压系统调控的非均匀分布预紧力可控高速主轴及其控制方法，包括主轴（1），主轴（1）外周安装有滚动轴承（3），位于主轴前端的滚动轴承（3）上安装有液压调控预紧力系统，该液压调控预紧力系统通过调控装置调控，液压调控预紧力系统包括作用在滚动轴承外周的液压作动套（8），安装在液压作动套（8）外周并与液压作动套形成封闭的液压油腔（5）的端盖（4）；其中，液压作动套上安装有温度传感器（9），调控装置通过温度传感器（9）检测到的信号对滚动轴承的预紧力进行调节。通过对不同温度下轴承外圈不同调控点进行预紧力精确调控，并且对主轴支承轴承的非均匀分布预紧力的闭环在线调控，以获得在不同工况下高性能的高速主轴。
Description
基于液压系统调控的非均匀分布预紧力可控高速主轴及其控制方法 技术领域
本发明属于高速主轴的滚动轴承性能调控应用领域， 涉及一种基于液压系 统调控的非均勾分布预紧力可控高速主轴及其控制方法。
背景技术
滚动轴承作为高速主轴内部旋转支撑元件， 其服役性能直接影响高速主轴 动力学性能， 尤其是在主轴系统复杂的服役条件下， 例如主轴在高速轻载、 低 速重栽更替的工况下， 要求主轴轴承在不同情况下服役性能可控以适应主轴动 力学性能要求， 从而保证高速加工的高精度与高可靠性。 因此， 如何实时调控 滚动轴承刚度、 温度、 旋转精度等服役性能以适应主轴系统的复杂工况至关重 要。 相关研究表明， 轴承预紧力调控技术已是轴承服役性能调整最有效的方法 之一。
传统轴承预紧技术多采用定位或定压恒值预紧方式， 预紧力取值大都依据 经验或实验数据确定， 这种恒定预紧技术已无法满足复杂工况下高速主轴对于 轴承服役性能调整的要求。 为此， 国内外诸多研究与学术机构就轴承预紧可控 技术开展了大量的研究， 并取得一定的成果。 在预紧力作用机理方面， 主要提 出基于测量反馈闭环主动控制方式的预紧力自调节和基于轴系转速效应或材料 热效应的预紧力调节方式； 在预紧控制机构方面， 有基于压电材料、 液压装置、 电磁装置及电致伸缩材料等主动式预紧力调整机构。
上述所述的预紧力调控装置都是对滚动轴 7 施加轴向均匀分布的预紧力。 而滚动轴承作为高速主轴的关键精密部件， 结构尺寸、 装配、 工作载荷的细微 变化都将对其在复杂工况下的服役性能产生重大影响。 单纯地对轴承施加均匀
分布的轴向预紧力， 不能有效地消除轴向和径向游隙的非均匀分布性， 也不能 满足高速主轴在某些特定工况下工作栽荷非均勾分布的要求， 这势必要求从更 为精细的角度出发探索滚动轴承预紧力的施加方式和大小， 使滚动轴承的服役 性能能够实现 "精益求精"。 因此， 根据特殊工况或游隙的要求， 研究非均匀分 布预紧力及其施加装置显得尤为迫切。
发明内容
为了解决以上技术问题， 本发明提供一种基于液压系统调控的非均匀分布 预紧力可控高速主轴及其控制方法， 通过对非均 分布预紧力的在线调控， 实 现降低高速滚动轴承的温升， 提高其刚度、 旋转精度， 获得在整个工作转速范 围内的动力学品质优良的主轴。
为实现上述目的， 本发明提供了一种基于液压系统调控的非均匀分布预紧 力可控高速主轴， 包括主轴， 主轴外周安装有滚动轴承， 所述位于主轴前端的 滚动轴承上安装有液压调控预紧力系统， 该液压调控预紧力系统通过调控装置 调控， 所述液压调控预紧力系统包括作用在滚动轴承外周的液压作动套， 安装 在液压作动套外周并与液压作动套形成封闭的液压油腔的端盖， 其中， 所述液 压作动套上安装有温度传感器， 所述调控装置通过温度传感器检测到的信号对 滚动轴承的预紧力进行调节。
作为本发明的优选实施例， 所述液压油腔沿周向均匀分布；
作为本发明的优选实施例 , 所述调控装置包括与温度传感器相连的调理电 路， 该调理电路的榆出端通过 A/D转换连接在单片机的输入端， 所述单片机的 输出端经 D/A转换连接有多路开关， 该多路开关经功率放大后连接在电液伺服 阀上， 该电液伺服阀与所述液压油腔内部相通；
作为本发明的优选实施例， 所述端盖上开设有与所述液压油腔贯通的进油
通道, 该进油通道设有进油口；
作为本发明的优选实施例， 所述滚动轴承的额定动栽荷 41.5KN;
本发明还提供了一种上述基于液压系统调控的非均匀分布预紧力可控高速 主轴的控制方法， 当主轴转动时， 温度传感器将测得的轴承外圈的温度模拟信 号经调理电路， 再经 A/D转换后输入到单片机中进行处理， 单片机对不同轴承 外圏温度下各预紧力调控点预紧力值的数据进行查表， 产生控制指令， 然后经 D/A转换后通过多路开关进行送出， 最后通过功率放大控制电液伺服阀的阀芯 位移， 进而控制进液压油腔处的压力， 最终通过液压作动套调节滚动轴承的预 紧力。
本发明基于液压系统调控的非均 分布预紧力可控高速主轴及其控制方法 至少具有以下优点： 本发明突破传统均匀分布预紧力作用， 对不同温度下轴承 外圏不同调控点进行预紧力精确调控， 实现高速化、 高刚度、 低温升、 长寿命 等技术突破。 通过对主轴支承轴承的非均勾分布预紧力的闭环在线调控， 以获 得在不同工况下高性能的高速主轴。
附图说明
图 1是本发明基于液压系统调控的非均匀分布预紧力可控高速主轴的整体结 构示意图；
图 2是本发明液压油腔分布示意图 （以 8个为例）；
图 3是液压油腔结构图。
具体实施方式
下面结合附图对本发明基于液压系统调控的非均勾分布预紧力可控高速主 轴及其控制方法作具体介绍：
请参阅图 1所示， 本发明基于液压系统调控的非均匀分布预緊力可控高速主
轴包括主轴 1 , 主轴 1外周安装有滚动轴承 3 , 所述位于主轴 1前端的滚动轴承 3上安装有液压调控预紧力系统， 该液压调控预紧力系统通过调控装置调控。
所述液压调控预紧力系统包括作用在滚动轴承 3外周的液压作动套 8， 安装 在液压作动套 8外周并与液压作动套 8形成封闭的空腔的端盖 4,所述液压作动 套 8与端盖 4之间形成的封闭的空腔为液压油腔 5，所述端盖 4上开设有与前述 液压油腔 5贯通的进油通道， 该进油通道设置有进油口 6。 所述液压作动套 8上 安装有温度传感器 9。
奇特别参阅图 2及图 3所示， 所述液压油腔 5是由液压作动套 8与端盖 4组 合而成， 其个数为整数， 在主轴 1周向均匀分布， 其位置与温度传感器 9的位 置接近， 这样， 通过调节各个液压油腔 5 中油液的压力， 即可实现滚动轴承 3 预紧力大小和分布的调节。
所述调控装置包括与温度传感器 9相连的调理电路 10, 该调理电路 10的输 出端通过 A/D转换 11连接在单片机 12的输入端， 所述单片机 12的输出端经 D/A转换 13连接有多路开关 14,该多路开关 14经功率放大 15后连接在电液伺 服阀上 16， 该电液伺服阔 16的输入端还连接有供油系统， 同时， 该电液伺服阀 16通过进油通道与液压油腔 5内部相连。
所述主轴 1转动时， 前、 后端由滚动轴承 3支承， 所述液压调控预紧力系统 位于主轴前端滚动轴 7? 3上， 所述液压作动套 8作为预紧力执行机构； 所述多 个温度传感器 9安放在液压作动套 8上， 多个温度传感器 9测得轴承外圈 （预 紧力调控点附近） 的温度模拟信号， 经调理电路 10, 再经 A/D转换 11后， 输 入到单片机 12中进行处理， 单片机 12对不同轴承外圈温度下各预紧力调控点 预紧力值的数据进行查表， 产生控制指令， 经 D/A转换 13 , 通过多路开关 14 进行送出， 最后通过功率放大 15控制电液伺服阀 16的阀芯位移， 进而控制进
油口 6处的压力， 由于该进油口 6与液压油腔 5相通， 因此， 压力油可作用在 液压作动套 8上， 由液压作动套 8对滚动轴承 3进行 紧力的调节。 此外， 电 液伺服阀 16、 液压油腔 5与供油系統 17相接， 形成回路。
本发明通过调节各个电液伺服阀 16， 进而控制进入各个液压油腔 5 内油液 的压力和有无， 从而实现预紧力大小和分布的调节。
本发明的基于液压系统调控的非均匀分布预紧力可控高速主轴采用以下主 要部件：
滚动轴承： 选择 SKF 3306A-Z, 轴承内径 φ30, 额定动载荷 41.5ΚΝ。 采用 圆螺母及端盖实现轴承一端双向固定形式。
探针式铠装铂热电阻温度传感器： FY-ZWC-2012, 西安方元电子有限公司。 A/D转换器： ADC0808, 美国 National Semiconductor公司。
D/A转换器： DAC0830系列， 美国 National Semiconductor公司。
功率放大器： 采用 IRF540和 MUR820等器件， ST公司。
单片机： C8051F, Silicon Lab公司。
多路开关： 74HC4051 , PHILIPS公司。
电液祠服阀： HY120P压力伺服阀， 裏樊航宇。
供油系统： exroth 液压泵站， Rexroth公司。
以上所述仅为本发明的一种实施方式， 不是全部或唯一的实施方式， 本领域 普通技术人员通过阅读本发明说明书而对本发明技术方案釆取的任何等效的变 换， 均为本发明的权利要求所涵盖。
Claims
1. 一种基于液压系统调控的非均勾分布预紧力可控高速主轴， 其特征在于： 包括主轴（ 1 ), 主轴（ 1 )外周安装有滚动轴承（ 3 ), 所述位于主轴（ 1 )前 端的滚动轴承（ 3 )上安装有液压调控预紧力系统， 该液压调控预紧力系统通 过调控装置调控， 所述液压调控预紧力系统包括作用在滚动轴承（ 3 )外周的 液压作动套（8 )， 安装在液压作动套（8 )外周并与液压作动套（8 )形成封 闭的液压油腔（ 5 ) 的端盖 （ 4 ), 其中， 所述液压作动套（ 8 )上安装有温度 传感器（9 ), 所述调控装置通过温度传感器（9 )检测到的信号对滚动轴承的 预紧力进行调节。
2. 如权利要求 1 所述的基于液压系统调控的非均勾分布预紧力可控高速主 轴， 其特征在于： 所述液压油腔（ 5 ) 沿周向均匀分布。
3. 如权利要求 2所述的基于液压系统调控的非均勾分布预紧力可控高速主 轴，其特征在于：所述调控装置包括与温度传感器（ 9 )相连的调理电路（ 10 ), 该调理电路（ 10 )的输出端通过 A/D转换（ 11 )连接在单片机（ 12 )的输入 端， 所述单片机（12 ) 的输出端经 D/A转换（13 )连接有多路开关（14 ), 该多路开关（ 14 )经功率放大（ 15 )后连接在电液伺服阀上（ 16 )， 该电液伺 服阀 （16 )与所述液压油腔（5 ) 内部相通。
4. 如权利要求 3 所述的基于液压系统调控的非均勾分布预紧力可控高速主 轴， 其特征在于： 所述端盖（4 )上开设有与所述液压油腔（5 )贯通的进油 通道， 该进油通道设有进油口 （6 )。
5. 如权利要求 1 所述的基于液压系统调控的非均勾分布预紧力可控高速主 轴， 其特征在于： 所述滚动轴承的额定动载荷 41.5KN。
6. 一种如权利要求 1 所述的基于液压系统调控的非均匀分布预紧力可控高 速主轴的控制方法， 其特征在于： 当主轴（1 )转动时， 温度传感器（9 )将 权 利 要 求 书
测得的轴承外圏的温度模拟信号经调理电路（10), 再经 A/D转换（11)后 输入到单片机（12) 中进行处理， 单片机（12)对不同轴承外圈温度下各预 紧力调控点预紧力值的数据进行查表， 产生控制指令， 然后经 D/A转换（13) 后通过多路开关 （14)进行送出， 最后通过功率放大 （15)控制电液伺服阀 ( 16 )的阀芯位移，进而控制进液压油腔处的压力， 最终通过液压作动套（ 8 ) 调节滚动轴承的预紧力。
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| CN106623994B (zh) * | 2017-02-23 | 2018-05-22 | 沈机集团昆明机床股份有限公司 | 带有预紧力调节装置的机床主轴系统 |
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| CN102886709B (zh) * | 2012-09-12 | 2014-09-24 | 华东交通大学 | 液压垫圈式滚珠丝杠刚度恒定调节装置 |
| CN103084589A (zh) * | 2013-01-31 | 2013-05-08 | 上海大众祥易机电技术有限公司 | 一种用于调节电主轴的预紧力的装置 |
| CN103223499B (zh) * | 2013-04-07 | 2015-02-25 | 北京航空航天大学 | 具有提高可调轴承预紧力的精密机床主轴轴向刚度的装置 |
| CN104801729B (zh) * | 2015-05-04 | 2017-06-16 | 清华大学 | 一种轴承预紧力可控的机床主轴系统 |
| CN106475581B (zh) * | 2016-09-28 | 2018-06-26 | 西安交通大学 | 一种主轴轴承外圈径向液压加载抑制振动的装置和方法 |
| CN106891202B (zh) * | 2016-11-07 | 2023-02-14 | 天津大学 | 一种高速精密主轴预紧力和预紧位移智能监控系统及其控制方法 |
| CN106670510B (zh) * | 2016-12-16 | 2019-07-23 | 西安交通大学 | 一种基于液压控制的机床主轴轴承预紧力自动调节系统和方法 |
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| CN110145505B (zh) * | 2019-05-27 | 2020-03-31 | 西安交通大学 | 一种局部加载的液压机液压伺服控制系统 |
| CN112524152B (zh) * | 2019-09-17 | 2023-05-09 | 福建金风科技有限公司 | 轴承游隙调整装置、方法及风力发电机组 |
| CN112059213B (zh) * | 2020-08-31 | 2022-01-11 | 沈阳建筑大学 | 一种智能调节主轴的轴承预紧力的方法和系统 |
| CN112253735A (zh) * | 2020-10-21 | 2021-01-22 | 山东大学 | 无级变速输出力矩连续调整的传动方法及装置 |
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