3results about How to "Reduce processing scrap rate" patented technology

The application discloses a kind of quick establishment systems of large aperture spliced telescope mirror numerical control processing model, including mirror design module, accurate coordinate calculation module, parameterized drive modeling module and check and confirmation module.Mirror design module is used to define the multi-level coordinate system of main mirror coordinate system, mirror assembly body coordinate system, edge sensor coordinate system and edge sensor slot coordinate system, and define optical surface curve equation, back spherical surface structure, outer contour and mirror gap geometric rule;Accurate coordinate calculation module is calculated according to the coordinate system and geometric rule, and the accurate coordinate point data of mirror is batch calculated;Parameterized drive modeling module generates three-dimensional solid model;Check and confirmation module is used to verify the accuracy of coordinate calculation result and the compliance of three-dimensional model to optical common surface, edge sensor interface slot coplanar and other design principles.The application can realize the batch automation modeling and quick iteration of telescope spliced mirror surface mirror, and improves modeling efficiency and precision.

The application relates to the technical field of greenhouse sheds, and discloses a greenhouse shed framework structure which comprises two telescopic rod assemblies, an arc-shaped rod assembly, two connecting pieces and two guide rails. The telescopic rod assembly comprises a fixed cylinder and a screw rod, the screw rod is slidably connected in the inside of the fixed cylinder, the arc-shaped rod assembly comprises a first arc-shaped rod and a second arc-shaped rod, the bottom ends of the first arc-shaped rod and the second arc-shaped rod are threadedly connected with the top ends of the two screw rods, and the opposite ends of the first arc-shaped rod and the second arc-shaped rod are connected through quick-connection mechanisms. In the utility model, the framework is split into multiple independent assemblies, so that the bending and forming machining procedures of the assemblies can be completed without relying on large machining equipment, the deformation problem that is prone to occurring during machining of an overlong component is effectively avoided, the machining waste rate is reduced, the machining procedure is simplified, and the machining cost is saved.

This invention relates to the field of machining technology, and particularly to an intelligent matching method and system for slow wire EDM machining parameters. The method involves loading electrode wire parameters and workpiece parameters to configure machining parameters and obtain first machining parameters. When the monitored environmental parameters are inconsistent with the standard environmental parameters, the method uses the electrode wire parameters, workpiece parameters, first machining parameters, and monitored environmental parameters as constraints to search the slow wire EDM machining sample set, performs lumped value evaluation, and obtains the fitted dimensions of the workpiece after cutting. When the dimensional deviation between the fitted dimensions and the standard dimensions of the workpiece after cutting is less than or equal to the dimensional tolerance, metal cutting control is performed based on the first machining parameters; otherwise, the first machining parameters are updated. This invention improves the accuracy and stability of metal cutting using slow wire EDM, reduces trial cutting costs and scrap rates, increases machining efficiency, and reduces production burden.