Beijing Aerospace Institute for Metrology and Measurement Technology

Fengju Sun

Lei Yan

Tian Bai

Xiaosan Wang

Yinxiao Miao

Qigang Huang

Ruidong Huo

Bingtao Gao

Junhong Tian

Yimeng Guo

Yilin Dai

A conical workpiece length measurement method is provided. Two laser displacement sensors are symmetrically arranged at opposite sides of a to-be-measured conical workpiece or a tooling loaded with the to-be-measured conical workpiece. Distance Xfrom each displacement sensor to a bottom plane of the to-be-measured conical workpiece is calibrated. An elongated base plate is arranged at a tip of the to-be-measured conical workpiece, and the two displacement sensors measure their respective distances to the base plate. The total length of the to-be-measured conical workpiece is calculated as follows: X=X+(X+X)/2, where Xrepresents distance from one of the two displacement sensors to the base plate, and Xrepresents distance from the other of the two displacement sensors to the base plate. Factors influencing the length measurement include calibration of the fixed length, measurement accuracy of the displacement sensor and a tilt error of the base plate.

Length measurement method for conical workpiece based on dual displacement sensors

A device for measuring length and center of mass of conical workpiece, including an inner frame, an outer frame, a base plate, two laser displacement sensors and a plurality of weighing mechanisms. The inner frame is rotatably connected with the outer frame through a pin shaft. A bottom surface of the conical workpiece can be fixedly connected with an inner bottom surface of the inner frame. The base plate is removably arranged on the inner frame, and abuts against a top of the conical workpiece. The base plate is perpendicular to an axis of the conical workpiece. The laser displacement sensors are fixedly arranged at a position of the inner frame below the top of the conical workpiece. The weighing mechanisms are provided at a bottom of the outer frame, and can bear the inner frame, the outer frame and the conical workpiece.

Device for measuring length and center of mass of conical workpiece

A method and an apparatus for measuring mass based on torque equilibrium, including a main blade for supporting and balancing a lever and parts arranged on the lever; a displacement measuring device for measuring a position of the lever; an electromagnetic torquer for balancing the apparatus after a balance weight is coarsely loaded during measuring; a product tooling on which a product to be measured is arranged and fixedly connected. The product tooling is fixed on a slider which freely slides along a guide rail; a locking block is provided to lock the product after the product slides in place; the guide rail is fixed on the level; a laser displacement sensor is provided to measure a displacement of the product along the guide rail; a lifting mechanism is provided to lift the lever and parts arranged on the lever to separate from the main blade.

Method and apparatus for measuring mass based on torque equilibrium

Growing community of inventors

Beijing, China

Fengju Sun