50results about How to "High movement sensitivity" patented technology

The present invention provides a handheld robot for orthopedic surgery and a control method thereof. The handheld robot of the present invention includes a main body, a grip, a kinematic mechanism, a tool connector, a tool, a force sensor and a positioning unit. The handheld robot of the present invention combines the position / orientation information of the tool acquired by the positioning unit with the force / torque information acquired by the force sensor, and utilizes the combined information to adjust the position of the tool so as to keep the tool within the range / path of a predetermined operation plan. In this way, the precision of the orthopedic surgery can be enhanced, and the error occurred during the surgery can be minimized.

Provided are a tilted vibration sensor incorporating a plurality of electrodes and a conductive spherical body which is turned on and off by the moving displacement of the spherical body, and which may be remarkably reduced in size and may have high performance and high operating sensitivity, high durability, and high reliability; and a method of manufacturing the sensor. The case (1) of the sensor comprises a case body (5) formed of a non-conductive material having such excellent gas-barrier property and heat resistance that can stop the transmission of gases which affects on the on / off operation of the sensor due to the moving displacement of the conductive spherical body (4) and a cover body (7) sealing airtight the opening part (6) of the case body. In the method of manufacturing the vibration sensor, moisture and particulate impurities affecting the on / off operation are removed from the hollow part (2) of the case (1), and the hollow part is evacuated.

The invention discloses a rolling and sliding compound guide track and a manufacturing method thereof. The rolling and sliding compound guide track comprises a rolling and sliding positioning compound guide track and a rolling guide track, wherein the rolling and sliding positioning compound guide track comprises a first positioning block, a second positioning block, a first rolling body and a first positioning baffle plate, the first rolling body is sequentially fixedly connected with the second positioning block and the first positioning block, and the outward surface of the first positioning block is of a circular arc surface; and the rolling guide track comprises a third positioning block, an adjusting wedge block, a second rolling body and a second positioning baffle plate, wherein the second rolling body is sequentially fixedly connected with the adjusting wedge block and the third positioning block, and the outward surface of the third positioning block is of the circular arc surface. The rolling and sliding compound guide track provided by the invention can ensure the guide precision of motion of a ram and the bearing capacity of the guide track, simultaneously reduce the friction force between the ram and a transmission mechanism, and upgrade the sensitivity, the rigidity and the vibration resistance of the motion of the ram by combining the advantages of a rolling guide track and a sliding guide track; and furthermore, not only geometric tolerance requirement of a guide track mounting groove is ensured, but also processing efficiency can be greatly improved.

The invention discloses a three pairs of sliding pair-spherical hinge-spherical hinge (3-PSS) mechanism-based coordinate measuring machine. The 3-PSS mechanism-based coordinate measuring machine is characterized in that: a three pairs of sliding pair-spherical hinge-spherical hinge parallel mechanism is provided; three motion sliding blocks are independently arranged on a pair of ball guide railswhich are arranged in parallel and can slide freely along the ball guide rails respectively; the three motion sliding blocks are connected with one end of each of three pairs of link rods through oneend of a universal joint respectively; the other end of each of three pairs of link rods are connected with a measuring moveable platform through the other end of the universal joint respectively; a measuring head is arranged on the lower plane of the measuring moveable platform; three indication gratings are fixedly connected to the three motion sliding blocks respectively; a scale grating and the pair of ball guide rails are arranged in parallel and are arranged on the guide rail mounting surfaces of guide rail cross beams; and the guide rail cross beams are suspended and fixedly connected to a pair of brackets. The 3-PSS mechanism-based coordinate measuring machine has high rigidity, a simple structure, high processing assembly property and low cost and can measure the three-dimensional space sizes, the shapes and the mutual positions of parts quickly and precisely.

The invention provides a continuous two-stroke two-stage constant force output micro-clamp and a control method, the clamp belongs to a flexible integrated mechanism. Among them, the constant force mechanism is composed of four sets of bistable negative stiffness beams and lever parts. The principle of the two-stage constant force mechanism is to obtain two-stage negative stiffness curves through the parameter design of four sets of bistable negative-stiffness beams, and then connect the lever part in parallel to realize positive stiffness compensation, thereby obtaining continuous two-stage zero-stiffness curves. The micro gripper can output two stages of constant clamping force in two stages of effective travel respectively. The invention has the advantages of multi-size adaptability, small volume, no friction, no assembly, high motion sensitivity and the like.

The invention discloses a power cabinet with a nonlinear damping platform, comprising a power cabinet body composed of hot-dip galvanized lace angle iron and a sheet metal skin, the bottom of the power cabinet body is embedded with an upper opening cavity structure The base of the power cabinet is equipped with an organ-shaped damping unit at the center of the bottom of the base. The damping unit can efficiently consume vibration energy in multiple directions. Multiple nonlinear damping units are set around the bottom of the base of the power cabinet. , the nonlinear damping unit uses flexible hinges to improve sensitivity and stability. The four parts of the damping ring in the nonlinear damping unit are connected by longitudinal flexible hinges and transverse flexible hinges to play the role of the link frame. The link frame structure is folded The non-linear stiffness vibration isolation effect is generated between the shrinkage and elastic elements. The power cabinet base, the damping shock-absorbing unit and multiple nonlinear shock-absorbing units are combined into a nonlinear shock-absorbing platform, which is designed through a nonlinear structure. It has good bearing capacity and stability.