3results about How to "Avoid mechanical errors" patented technology

The invention relates to an eddy current-laser-liquid crystal intelligent material synergistic thermal barrier coating nondestructive testing probe and method. The testing probe comprises an eddy current probe, a laser ranging probe and a probe combination detection piece fixing device, the method is used for carrying out comprehensive nondestructive evaluation on the thickness and dielectric constant of the ceramic layer of the thermal barrier coating and the performance of the metal matrix below the thermal barrier coating. When the thermal barrier coating system is evaluated, the distance between the eddy current probe and the upper surface of the metal matrix and the performance parameters of the coating system are obtained through inversion, and the distance between the laser ranging probe and the upper surface of the thermal barrier coating ceramic layer and the height difference between the laser ranging probe and the eddy current probe are measured through the liquid crystal intelligent material and the laser ranging probe. And further obtaining the thickness of the thermal barrier coating ceramic layer. The method has the advantages of being non-contact, high in precision and rapid in detection, mechanical measurement errors caused by uncontrollable factors such as the mechanical contact state and the surface roughness between the probe and the coating surface can be effectively avoided, and accurate evaluation of the thermal barrier coating and the metal matrix is guaranteed.

The utility model relates to astronomical observation equipment technical field provides a single -way multi -star simulation structure, including support and lens barrel, the lens barrel includes first sub -cylinder and second sub -cylinder, first sub -cylinder and second sub -cylinder, first sub -cylinder is provided with camera lens subassembly away from one side of second sub -cylinder, and the detachable connection between camera lens subassembly and first sub -cylinder, second sub -cylinder is provided with the insert piece seat away from one side of first sub -cylinder, and the detachable connection between insert piece seat and second sub -cylinder, the insert piece seat is provided with the mounting seat away from one side of second sub -cylinder, be provided with the light source on the mounting seat, be inserted and arranged the insert piece on the insert piece seat, the utility model can effectively improve the convenience of structural adjustment, improve the operation efficiency while, reduce the mechanical error produced in the repeated dismounting process, guarantee accurate simulation.

The utility model provides a hollow tank body trimming mechanism which comprises a positioning seat and at least one tool bit assembly, each tool bit assembly comprises a group of blades which are mutually matched in a shearing mode, and a meshing point acting on an opening portion of a hollow tank body is arranged between the two blades. The hollow tank body moves along the moving track and passes through the meshing points; the positioning seat is provided with a plurality of static parts, each tool bit assembly is provided with a moving part, and the static parts are matched with the moving parts in a one-to-one alignment mode. The static parts or the moving parts have an extension length, and the moving parts move relative to the corresponding static parts in the direction of the extension length. In the model changing process, the moving track of the hollow tank body is not changed, only the tool bit assembly is made to move close to or away from the moving track in the model changing process, then position change of other parts caused by the change of the moving track of the hollow tank body does not need to be replaced, the model changing process is simple, adjusting steps are simple, and the cost is low. And time and labor are saved.