10 results about "Flexure hinges" patented technology

The invention provides a high-frequency FBG sensor with symmetrical elliptical flexible hinges and a monitoring method of the high-frequency FBG sensor, and relates to the technical field of optical fiber sensing, the sensor comprises a fiber Bragg grating, a base, a first elliptical flexible hinge, a second elliptical flexible hinge, a first mass block and a second mass block; the left side of the base is connected with a first elliptical flexible hinge; the first elliptical flexible hinge is connected with a first mass block; the right side of the base is connected with a second elliptical flexible hinge; the second elliptical flexible hinge is connected with a second mass block; the fiber bragg grating is arranged between the first mass block and the second mass block. As a flexible hinge design, the symmetrical elliptical flexible hinge solves the problem that the motion range is limited, achieves a larger motion range, increases the sensitivity, and keeps high precision at the same time.

The application discloses a three-freedom-degree large-stroke fast-tool-servo device, which comprises a workbench, a voice coil motor, a Z-direction displacement transmission mechanism, a three-axis connecting mechanism, an X-direction driving platform, a Y-direction driving platform, a tool holder and a tool. The three-axis connecting mechanism comprises a three-axis connecting plate and a three-axis connecting frame, and the three-axis connecting plate is connected with the three-axis connecting frame through X-axis and Y-axis flexible hinges around the three-axis connecting plate. The flexible hinges are provided with Z-axis flexible hinge points. The double-axis flexible hinges are provided with at least one X-axis flexible hinge point and one Y-axis flexible hinge point. The Z-direction displacement transmission mechanism, the three-axis connecting mechanism and the driver connecting rod are designed in an integrated mode. The piezoelectric ceramic driver is adopted. The three-freedom-degree active cutting of the tool can be realized, the large-stroke output capacity is achieved, the machining process of a complex optical surface can be efficiently completed, the displacement errors in multiple directions can be compensated, and the cutting force disturbance problem is solved.

The present invention relates to a multi-axis stage apparatus capable of significantly improving the precision of wafer bonding, a wafer bonding method using the apparatus, and a wafer bonding apparatus. The apparatus includes a base, an alignment stage configured to align a first wafer held by a first wafer chuck, a first driving device positioned between the base and the alignment stage and configured to vertically move the alignment stage with low precision, and a second driving device also positioned between the base and the alignment stage and configured to vertically move the alignment stage with high precision. The second driving device may include a flexure hinge, at least a portion of which is configured to distribute load. By combining coarse and fine vertical movement control and supporting structures based on flexure mechanics, the apparatus enables precise multi-axis alignment and bonding of wafers.

The present invention relates to a direct-drive large-stroke precision rotating platform, comprising: a base; a flexure hinge bearing, including a flexure hinge, a drive end, a stator and a rotor, wherein the stator is fixed on the base, and the drive end is connected to the flexure hinge and extends outside the flexure hinge; a load carrier, fixedly connected to the rotor and used for connecting the flexure hinge bearing and an end effector; a pre-tightening spring, one end of which is fixed to the base and the other end of which is connected to the drive end; and a driver, disposed at the end of the drive end, one end of the driver is fixed on a driver bracket and thus fixed to the base, and the other end is fixed to or in contact with the drive end. The present invention greatly increases the stroke of the precision rotating platform, reduces the material stress in deformation, and extends the service life of the device; the precision rotating platform provided by the present invention requires a lower driving force and has a smaller requirement for the thrust of the driver; in the present invention, the driver is externally disposed, effectively reducing the adverse effects of the heat generation and vibration of the driver on the end effector.

Method for transporting a wind turbine blade (3), comprising: a) providing (S1) a blade (103) having a flexible portion (21) forming a flexure hinge (22) for bending around a bending axis (B1, B2) arranged perpendicular to a length direction (R) of the blade (103); b) transporting (S4) the blade (103) along a curved transport path (8); and c) reinforcing (S5) the flexible portion (21). Thus, the blade is provided with a deflection that facilitates transport on a curved transport path, such as a highway or railway. Thus, even very long blades can be transported on the land in a single piece by a road vehicle or train.

The present invention relates to a recoater system (11) for laying out a powder bed in a process chamber (1) of an additive manufacturing ap- paratus, wherein the recoater system (11) comprises: - a first track (13) and a second track (15) extending parallel to each other in a first direction (x), wherein the first track (13) and the sec- ond track (15) have a track distance (D) to each other in a second direction (y) that extends transverse to the first direction (x), and - a recoater unit (21) bridging the track distance (D), wherein the re- coater unit (21) comprises a first mounting element (23a) for mount- ing the recoater unit (21) to the first track (13) and a second mount- ing element (23b) for mounting the recoater unit (21) to the second track (15), so that the recoater unit (21) is guided by the first track (13) and the second track (15) to be movable in the first direction (x), wherein at least one of the first mounting element (23a) and the second mounting element (23b) comprises a first flexure hinge (35) defining a first flexure hinge axis (37) and a second flexure hinge (39) defining a second flexure hinge axis (41), wherein the first flexure hinge axis (37) and the second flexure hinge axis (41) extend transverse to the second direction (y) in parallel to each other, allowing a thermal expansion of the re- coater unit (21) in the second direction (y).

The invention discloses an underwater bionic robot based on flexible hinges, and relates to the technical field of robots, the underwater bionic robot comprises a main body, a fixing shell is arranged at the tail end of the main body, a linear motor located in the fixing shell is arranged at the tail end of the main body, a fixing block is arranged in the linear motor, and one end of the fixing block is movably connected with a transmission plate; one end of the transmission plate is movably connected with a flexible plate, a double-outlet-rod hydraulic cylinder is arranged in the fixing shell, limiting bearings are arranged at the output ends of the two sides of the double-outlet-rod hydraulic cylinder, and the top ends of the limiting bearings are movably connected with limiting blocks. An external control device is used for controlling the device to move, an internal turbine is used for adjusting lifting displacement, a head end searchlight facilitates observation of water conditions, meanwhile, a double-outlet-rod hydraulic cylinder is started, it is ensured that a main body normally moves in strong water flow, the structure achieves large-amplitude swing of a flexible plate, a shape memory alloy grid solves the problem of interference between rigidity adjustment and a movement angle, and the structure is simple. Accurate and independent control is achieved in dynamic water flow.

The present disclosure provides a unit for a handle of a personal care tool, the unit including a housing and a light indication and sealing element, the housing having a proximal end closest to the head, the head being repeatedly attachable to and detachable from the handle, the light indication and sealing element including an annular structure and an elastic circular part, the annular structure being connected to the housing at the proximal end by two flexible hinges, thereby forming a circular gap between the annular structure and the housing, the circular gap being filled with a transparent and / or translucent soft elastomeric material, the transparent and / or translucent soft elastomeric material forming the elastic circular part, thereby sealing the annular structure and the housing in a substantially watertight manner.

The invention relates to a strut (134, 136, 200) for an optical system (100), having a plurality of flexure hinges (234) and a compensation force generating device (300A, 300B, 300C), wherein the strut (134, 136, 200) can be brought from an undeflected state (Z1) into a deflected state (Z2) with the aid of a deformation of the plurality of flexure hinges (234), and wherein the compensation force generating device (300A, 300B, 300C) is designed to generate a compensation force (F-) when the strut (134, 136, 200) is brought from the undeflected state (Z1) into the deflected state (Z2), which compensation force (F-) compensates for a parasitic force (F+) resulting from the deformation of the plurality of flexure hinges (234).