3results about How to "Low cost processing" patented technology

To address the issues of insufficient performance and high cost associated with integral casting and additive manufacturing methods for parts with small-entry elliptical gradient deep cavities, and the difficulties, low efficiency, and high cost of metal removal methods, this invention proposes a machining method for elliptical gradient deep cavities with small entry points. The method involves first rough drilling and rough turning to obtain a deep hole. Then, a step-by-step machining approach is adopted, dividing the part into regions and machining them axially and radially. First, the part is tilted to machine the regions on both sides of the major axis of the ellipse. Then, the part is turned upright to machine the regions on both sides of the minor axis of the ellipse. During the upright machining, a radial layering and thin-cutting fast-running method is used. Several layers are machined using the first toolpath until the machining residue in the undercut and triangular regions is removed. Then, a second toolpath is used for contour machining to obtain a gradient deep cavity with an elliptical cross-section. Finally, the gradient deep cavity is precision milled until its internal dimensions and surface roughness meet the design requirements.

The utility model provides a large-specification stainless steel pipe fitting outer circle machining tool which comprises a lead screw, a fixed end cover and a locking nut. Central holes are formed in two ends of the screw rod body; the length of the lead screw body is larger than the axial length of the workpiece, and the two ends of the lead screw body extend out of the two ends of the workpiece. The two ends of the workpiece are concentrically positioned and adaptively provided with the fixed end covers, end cover center holes formed in the fixed end covers and the lead screw are concentrically positioned and adaptively installed, the end cover center holes transfer the center of the workpiece to the centers of the fixed end covers, and the outer threads at the two ends of the lead screw are screwed and adaptively provided with the locking nuts which clamp the fixed end covers of the workpiece. Therefore, the workpiece and the lead screw are concentrically locked, fastened and connected into a whole. According to the utility model, the technical problem that a large-specification stainless steel pipe fitting workpiece cannot be clamped and machined on an ME1332A cylindrical grinding machine at high precision is solved, the machining precision grade can reach IT5 and IT7, the surface roughness is less than 0.2 mu m, and high-precision, high-efficiency and low-cost machining of the outer circle of the large-specification stainless steel pipe fitting workpiece is realized.

The utility model discloses a modular planting flower box based on metal plate buckle assembly, belongs to the technical field of metal gardening facilities, and realizes welding-free and screw-free quick assembly through a U-shaped clamping groove and an elastic locking mechanism which are formed by precise bending. The innovatively-designed four-layer composite stand column structure provides the bearing capacity larger than or equal to 150 kg / m, and the volume compression rate after folding reaches 85%. The method is suitable for various scenes such as household gardening and municipal greening.