3results about How to "Small shape and position tolerance" patented technology

The machining method of the flexible bolt comprises the following steps: numerical turning: grooving; dual annealing: ensuring that the strength sigma b is equal to 980-1180 MPa; bench work: straightening the product; stress relief annealing: eliminating the residual stress of the product; turning: firstly, drilling a central hole; lathing a clamping process section; clamping the process section by adopting a special spherical jacket, and turning the outer circle by clamping and jacking; centerless grinding: grinding an outer circle; stress relief annealing: eliminating the residual stress of the product; the original center hole is removed, and then center holes are drilled in the two ends of the product again; turning: ejecting center holes at two ends by adopting an ejector pin, and turning an outer circle; centerless grinding: grinding the outer circle to the required size of the product; general turning is conducted, specifically, sharp corners of the grooves are polished through polishing cotton; the diameter of a rolled thread blank and the diameter of a square blank are turned; numerical milling: milling, pulling and twisting four corners; burrs are removed, wherein the burrs in the four directions are removed; thread rolling: rolling threads at two ends; performing fluorescence flaw detection; anodizing is conducted; the anodized layers on the two end faces are removed; preparing a mark: preparing a mark by adopting an electrolysis method; performing total inspection; and warehousing.

This invention relates to the field of robotic arm technology, specifically to a multi-station robotic arm collaborative vacuum cavity welding and assembly method, comprising the following steps: S1, station layout configuration; S2, multi-robotic arm collaborative configuration; S3, collaborative motion error compensation; S4, welding path planning and deformation compensation; S5, station cycle time dynamic optimization. This invention proposes a collaborative motion error compensation algorithm based on the weighted least squares method. By real-time acquisition of robotic arm end-effector pose feedback data, it dynamically calculates and issues pose correction amounts, achieving closed-loop control of collaborative positioning accuracy, effectively eliminating accuracy losses caused by robotic arm joint clearance, load changes, and temperature drift. Furthermore, it establishes a welding thermal deformation prediction model based on the inherent strain method, achieving pre-compensation and dynamic correction of welding deformation, resulting in smaller dimensional and positional tolerances after vacuum cavity welding, meeting the stringent requirements of high-end semiconductor and aerospace equipment.

The utility model belongs to the technical field of mechanical testing, and particularly relates to a compression strength testing tool. The clamp comprises an upper clamp and a lower clamp, the upper clamp comprises a cylinder portion, the end face of the cylinder portion is in contact with an object to be detected, the lower clamp comprises a chuck used for clamping the object to be detected, the diameter of the section of the cylinder portion is smaller than 5 mm, the chuck is a disc, and a plurality of clamping corners distributed in a circumferential array mode are arranged on the periphery of the disc. According to the utility model, a stable clamp plane and a reduced measurement area are provided, the structure is simple, and the assembly is easy.