2 results about "Stress limit" patented technology

An embedded straddle-type upper pressure roller structure for a single-end precision milling machine for wooden windows belongs to the field of machining technology. The pressure roller of the embedded straddle-type upper pressure roller and the roller table are arranged vertically opposite each other on the single-end precision milling machine, clamping and feeding the wooden window. This invention uses a spring to connect the embedded straddle-type upper pressure roller and the scissor-lifting platform. This structure changes the range of preload force on the wooden window by changing the type of spring. The spring is easy to replace and has low maintenance costs. By adjusting the type of spring and the height of the scissor-lifting platform, adaptive clamping of wooden windows of different thicknesses or materials can be achieved. The spring spacing adjustment mechanism can independently adjust the compressible stroke and initial pressure of the spring, adjusting the levelness of the embedded straddle-type upper pressure roller to ensure the shape accuracy during wooden window processing. Furthermore, by adjusting the type of spring and the height of the scissor-lifting platform, the stress limit on the wooden window can be further controlled.

The application provides a force-bearing casing support plate and mounting edge axial distance design method, and relates to the technical field of an aero-engine. The method comprises the following steps: S1, determining the maximum load of the force-bearing casing mounting edge according to a set engine design method; S2, equivalent the force and moment of the maximum load acting on the casing mounting edge to a maximum resultant force F 合 ; S3, taking the material yield limit as the maximum stress limit value of the force-bearing support plate root rounding position, calculating the minimum axial distance l min of the force-bearing casing support plate and the mounting edge according to the maximum resultant force F 合 of the force-bearing casing mounting edge; S4, taking the minimum rigidity of the casing mounting edge as the minimum rigidity of the casing mounting edge according to the maximum resultant force F 合 , calculating the maximum axial distance l max of the force-bearing casing support plate and the mounting edge according to the minimum rigidity. The application can guarantee that the maximum stress level and the minimum deformation of the casing meet the design requirements, and realize the optimal solution of the strength life and the rigidity.