6results about How to "Small shape and position tolerance" patented technology

The invention relates to an omni-directional ceiling antenna. The omni-directional ceiling antenna comprises a metal bottom plate; the radiating body is positioned on one side of the metal bottom plate along the thickness direction; one end of the non-metal supporting structure is connected with the radiator, the other end of the non-metal supporting structure is connected with the metal bottom plate, and the non-metal supporting structure is used for supporting the radiator on the metal bottom plate; and one end of the metal grounding piece is electrically connected with the radiator, and the other end of the metal grounding piece is electrically connected with the metal bottom plate. According to the omni-directional ceiling antenna, the roundness of a radiation pattern of the antenna and the supporting strength of the radiator can be ensured at the same time.

The invention relates to the technical field of tooth blank tooth punching machining, in particular to machining equipment for tooth blank tooth punching. The gear shaping machine has the beneficial effects that the hydraulic limiting unit and the outer wall jacking unit are matched together, stable limiting of a machined gear blank is achieved, it is guaranteed that the gear blank positioning reference fine trimming effect is completed before gear shape machining, the machining size precision is improved, the form and location tolerance of gear machining is reduced, and then the power gear shaping unit and the power gear shaping unit are matched with each other, so that the machining precision is improved. A gear blank is punched in a gear shaping mode, the production efficiency is high, quenching of a machined tooth surface is achieved in cooperation with the auxiliary effect of the auxiliary liquid cooling unit, the problem that the tooth surface stress is affected due to the fact that the temperature is too high due to high-speed gear shaping operation is solved, deformation of the gear blank is avoided, and the service life of the gear blank is prolonged. The problem that the tooth blank machining precision is reduced due to the fact that existing machining equipment for tooth blank tooth punching cannot effectively conduct auxiliary flexible jacking on the tooth surface is solved, and flexible jacking treatment can be conducted on the surface of the machined tooth blank.

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 superfinishing machine comprises a lathe bed, a first pedestal is arranged in the center of the top end of the lathe bed, a feeding system is arranged in the first pedestal, a lifting seat is arranged in the feeding system, a grinding driving system is arranged on one side of the lifting seat, and a grinding motor is arranged on the other side of the lifting seat. A superfinishing grinding head is arranged on the other side of the lifting base, a main shaft is arranged in one side of the lathe bed, a magnetic disc is arranged at the top end of the main shaft, and a plurality of supporting blocks are arranged at the top end of the magnetic disc. A main shaft system adopts an N bearing with higher precision and a high-speed two-angular-contact thrust ball bearing with higher radial bearing capacity, so that radial run-out and axial play of a main shaft in the rotating process are effectively reduced, the stability of the bearing to be ground in the high-speed rotating process is ensured, the size precision of the machined bearing is higher, and the service life of the bearing to be ground is prolonged. And the form and location tolerances such as roundness and cylindricity are smaller, and the machining requirement for the precision requirement of the bearing can be met.

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.