摘要：【中文】本发明公开了一种大量程压电薄膜三维力传感器及其测量方法，属于传感器及其测控技术领域。结构包括螺钉，压电薄膜组，上盖，壳体。当传感器上盖受到空间力（F_x、F_y、F_z）作用时，压电薄膜组中的上层压电薄膜直接测量F_z，中层（下层）的压电薄膜通过将作用于压电薄膜组的弯矩载荷M_y（M_x）转化为作用于传感器上盖的F_y（F_x），第二电极片（第四电极片）和第三电极片（第五电极片）输出大小相等方向相反的电荷，经过电荷放大，D/A转换及数据采集分析，将电荷转换为电压，进而间接测量F_y（F_x）；本发明可实现对瞬变、强冲击、高动态响应和大量程三维力的测量。 【EN】The invention discloses a wide-range piezoelectric film three-dimensional force sensor and a measuring method thereof, belonging to the technical field of sensors and measurement and control thereof. The structure includes screw, piezoelectric film group, upper cover, casing. When the sensor upper cover is subjected to space force (F_x、F_y、F_z) When acting, the upper laminated piezoelectric film in the piezoelectric film group is directly measuredF_zThe piezoelectric film of the middle layer (lower layer) is loaded by bending moment acting on the piezoelectric film groupM_y（M_x) Converted to act on the upper cover of the sensorF_y（F_x) The second electrode plate (the fourth electrode plate) and the third electrode plate (the fifth electrode plate) output charges with equal size and opposite directions, and the charges are converted into voltage through charge amplification, D/A conversion and data acquisition and analysis so as to indirectly measureF_y（F_x) (ii) a The invention can realize transient and strongShock, high dynamic response, and a wide range of three-dimensional force measurements.

摘要：【中文】本发明公开了一种多跨距小直径孔同轴度加工方法及加工装置，利用已经加工完成的前端孔作为加工末端孔的同轴定位基准，能够确保前端孔和末端孔的同轴度；加工装置的专用刀柄上均安装有与预先加工的前端孔配合的支撑环，支撑环和专用刀柄之间设置有能够在支撑环和前端孔之间形成动压油膜的供油装置，供油装置包括设置在专用刀柄内的油道，支撑环上周向分布有多个与油道连通的通油孔，支撑环的周向表面上设置有多个与通油孔一一对应的供油孔；使用时，支撑环与前端孔内径配合，在加工刀具的高速旋转过程中，油道内的液压油经过通油孔和供油孔，在支撑环的外壁与前端孔的内壁之间形成动压油膜，防止专用刀柄转动对已经加工好的前端孔形成损害。 【EN】The invention discloses a method and a device for processing the coaxiality of a multi-span small-diameter hole, which can ensure the coaxiality of a front end hole and a tail end hole by using a processed front end hole as a coaxial positioning reference for processing the tail end hole; the special tool handles of the processing device are respectively provided with a support ring matched with a pre-processed front end hole, an oil supply device capable of forming a dynamic pressure oil film between the support ring and the front end hole is arranged between the support ring and the special tool handles, the oil supply device comprises an oil duct arranged in the special tool handles, a plurality of oil through holes communicated with the oil duct are circumferentially distributed on the support ring, and a plurality of oil supply holes corresponding to the oil through holes one to one are arranged on the circumferential surface of the support ring; when the special tool holder is used, the support ring is matched with the inner diameter of the front end hole, hydraulic oil in the oil duct passes through the oil through hole and the oil supply hole in the high-speed rotating process of the machining tool, a dynamic pressure oil film is formed between the outer wall of the support ring and the inner wall of the front end hole, and damage to the machined front end hole due to rotation of the special tool holder is prevented.

摘要：【中文】本发明公开了一种带有整体式机械先导单向阀及机械液压定位的多路阀，包括主阀体，主阀体内安装有阀杆，主阀体上设置有第一进油口、第二进油口、第一油道、工作油口A、第二油道、工作油口B、第三油道、第四油道和第二油腔；工作油口A与第二油腔之间安装有第一单向阀，第一单向阀和阀杆之间安装有用于控制第一单向阀逆向液压开启的阀芯先导机械控制装置；主阀体上安装有与阀杆同轴连接的阀杆定位装置，阀杆内设置有与主阀孔连通的径向油孔，阀杆内还设置有第一油腔；阀杆左移一定距离，在阀芯先导机械控制装置的作用下打开第一单向阀，可使阀杆处于浮动位，工作油口A与工作油口B处的油压处于浮动状态，可使负载保持一个动态平衡。 【EN】The invention discloses a multi-way valve with an integral mechanical pilot check valve and mechanical hydraulic positioning, which comprises a main valve body, wherein a valve rod is arranged in the main valve body, and a first oil inlet, a second oil inlet, a first oil duct, a working oil port A, a second oil duct, a working oil port B, a third oil duct, a fourth oil duct and a second oil chamber are arranged on the main valve body; a first check valve is arranged between the working oil port A and the second oil cavity, and a valve core pilot mechanical control device for controlling the reverse hydraulic opening of the first check valve is arranged between the first check valve and the valve rod; the main valve body is provided with a valve rod positioning device coaxially connected with the valve rod, a radial oil hole communicated with the main valve hole is formed in the valve rod, and a first oil cavity is formed in the valve rod; the valve rod moves leftwards for a certain distance, the first one-way valve is opened under the action of the pilot mechanical control device of the valve core, the valve rod can be positioned at a floating position, the oil pressure at the working oil port A and the working oil port B is positioned in a floating state, and the load can be kept in a dynamic balance state.

摘要：【中文】本发明公开了一种带有整体式机械先导单向阀及电液比例控制的多路阀，包括主阀体，主阀体内安装有阀杆，主阀体上设置有第二进油口、第一进油口、第一油道、工作油口A、第二油道、工作油口B、第三油道、第五油道和第三油腔；工作油口A与第三油腔之间安装有第一单向阀，第一单向阀和阀杆之间安装有阀芯先导机械控制装置，第一进油口和第二油道之间安装有第二单向阀；主阀体上安装有用于控制阀杆动作的电液控制装置；采用手动与电动复合控制，在负载大或负载小时都能使用，当负载大时使用电动控制阀杆动作，操作简单，减轻了劳动强度，保留手动操作方式，既可以在负载小时，缩短操作时间，又可以在电液控制装置故障时使用，提高了可靠性。 【EN】The invention discloses a multi-way valve with an integral mechanical pilot check valve and electro-hydraulic proportional control, which comprises a main valve body, wherein a valve rod is installed in the main valve body, and a second oil inlet, a first oil duct, a working oil port A, a second oil duct, a working oil port B, a third oil duct, a fifth oil duct and a third oil chamber are arranged on the main valve body; a first check valve is arranged between the working oil port A and the third oil cavity, a valve core pilot mechanical control device is arranged between the first check valve and the valve rod, and a second check valve is arranged between the first oil inlet and the second oil duct; an electro-hydraulic control device for controlling the action of the valve rod is arranged on the main valve body; the manual and electric combined control is adopted, the hydraulic control device can be used when the load is large or small, the electric control valve rod is used for controlling the action when the load is large, the operation is simple, the labor intensity is reduced, the manual operation mode is reserved, the operation time can be shortened when the load is small, the hydraulic control device can be used when the electric hydraulic control device breaks down, and the reliability is improved.

摘要：【中文】本发明公开了一种基于整体式螺纹插装先导液压锁的多路换向阀，包括主阀体，主阀体内安装有主阀杆，主阀体上设置有进油口P，进油口P的两侧分别设置有第一油道、第二油道、第六油道和第三油道、第四油道、第五油道，第六油道和第三油道均与进油口P连通，主阀体内还安装有梭阀杆，梭阀杆一侧的梭阀孔内安装有位于工作油口A和第二油道之间的先导单向阀A，梭阀杆另一侧的梭阀孔内安装有位于工作油口B和第四油道之间的先导单向阀B；在工作油口A和工作油口B处设置先导式单向阀液压锁，可有效防止油液回流；先导单向阀能够在过载情况下及时打开并释放负载压力，从而更容易打开先导单向阀，可以降低冲击，减小穴蚀的发生。 【EN】The invention discloses a multi-way reversing valve based on an integral type thread plug-in pilot hydraulic lock, which comprises a main valve body, wherein a main valve rod is arranged in the main valve body, an oil inlet P is formed in the main valve body, a first oil duct, a second oil duct, a sixth oil duct, a third oil duct, a fourth oil duct and a fifth oil duct are respectively arranged on two sides of the oil inlet P, the sixth oil duct and the third oil duct are communicated with the oil inlet P, a shuttle valve rod is also arranged in the main valve body, a pilot one-way valve A positioned between a working oil port A and the second oil duct is arranged in a shuttle valve hole on one side of the shuttle valve rod, and a pilot one-way valve B positioned between the working oil port B and the fourth oil duct is arranged in a shuttle valve; the pilot check valve hydraulic locks are arranged at the working oil port A and the working oil port B, so that oil can be effectively prevented from flowing back; the pilot check valve can be opened in time and release load pressure under the overload condition, so that the pilot check valve is opened more easily, impact can be reduced, and cavitation erosion is reduced.