43results about How to "Efficient Transmission" patented technology

The invention discloses a combined method of arc ion plating and twin target bipolar high-power pulsed magnetron sputtering, and belongs to the technical field of material surface treatment. The method aims to solve the problem of large particles due to use of low-melting-point pure metal (like aluminum) or multicomponent alloy materials and non-metallic materials (like graphite) in arc ion plating and the limitation of semiconductor material silicon, and discharge arcing in the unipolar high-power pulsed magnetron sputtering technique and the limit in using of high-melting-point and difficult-to-ionize target materials (like zirconium) are eliminated. The method includes the steps that first, workpieces are placed on a sample table inside a vacuum chamber and connected with related equipment; second, thin film deposition is performed, working gas is introduced when vacuumizing is executed to 10<-4> Pa, and a film coating power supply is switched on; and the large-particle defect in arc ion plating is overcome through high-power pulsed magnetron sputtering, the high-melting-point and difficult-to-ionize materials are ionized through arc ion plating, twin targets generate multi-component plasma and further adjust the content of the plasma in a thin film, plasma energy is regulated through a grid bias power supply, and accordingly the thin film can be prepared.

The invention discloses a harmonic drive cam. According to the characteristic curve of the cam, low-angular-frequency and high-angular-frequency cosine waves are added on the basis of a cosine function, a low-angular-frequency cosine term is used for reducing the trend that a radius vector of the long axis of the cam becomes smaller, a high-angular-frequency cosine term is used for changing the deformation amount of the short axis of the cam, and the deformation amount of the long axis of the cam is smaller than that of the short axis of the cam. According to the harmonic drive cam, the comprehensive performance of harmonic drive is improved, the harmonic drive wrap angle can be increased through the characteristic curve of the harmonic drive cam, and the harmonic drive bearing capacity is improved.