2results about How to "Small shape error" patented technology

The utility model relates to the field of longitudinal welded pipe welding, and discloses a self-adaptive compression anti-deformation device for longitudinal welded pipe welding, which comprises a workbench, the top of the workbench is fixedly connected with a limiting cylinder, the left end of the limiting cylinder is fixedly connected with a motor I, the output end of the motor I is fixedly connected with a cross rotating rod, and the cross rotating rod is fixedly connected with a rotating shaft. A sleeve is slidably connected to the outer wall of the cross rotating rod, a circular block is fixedly connected to the right end of the sleeve, a limiting cylinder is rotatably connected to the outer wall of the right end of the sleeve, a limiting groove is formed in the inner wall of the limiting cylinder, a sliding block is slidably connected to the outer wall of the limiting groove, and a supporting plate is fixedly connected to the top of the sliding block. According to the utility model, the self-adaptive support of the support plate on the welded pipes with different inner diameters can be realized, the welding seam deviation caused by stress deformation or position deviation of the welded pipes in the welding process is avoided, the positioning accuracy before welding is improved, meanwhile, support parts with different specifications do not need to be replaced, and the universality of the equipment on the welded pipes with various pipe diameters is enhanced.

This utility model relates to the field of machining technology, specifically disclosing a positioning fixture for quickly clamping gears. The positioning fixture includes a positioning shaft and an inner pull rod. One end of the positioning shaft is configured to fit a central hole and is connected to the inner pull rod; the other end of the positioning shaft is used to connect to a gear. The inner pull rod is disposed in a guide hole of the positioning shaft and is detachably connected to the inner pull rod. When the inner pull rod moves away from the tailstock, the end of the positioning shaft tightens and securely connects to the gear. When the inner pull rod returns to its original position, the end of the positioning shaft retracts, allowing the gear to disengage from the positioning shaft. This solves the problem in the prior art where existing fixtures cannot efficiently and stably clamp gears, resulting in low production efficiency and poor quality stability of precision gears.