4results about How to "Forming accurately" patented technology

The invention provides a hot rolling preparation method for producing flat-bulb titanium and application, the method comprises the steps that S1, a square blank is preheated to T1 and then subjected to heat preservation for 1-2 h, the phase transformation point of the square blank is T2, T1 = T2-delta T, and delta T ranges from 20 DEG C to 30 DEG C; s2, rough rolling is conducted at the speed of 4.5 m / s to 5.5 m / s, a groove is formed, the blank temperature after rough rolling is larger than or equal to 880 DEG C, finish rolling is conducted in a continuous passing mode to conduct arc shaping on the blank, the symmetrical flat-bulb titanium profile with bulbs at the two ends and a web in the middle is obtained, the blank temperature after finish rolling is larger than or equal to 850 DEG C, and the total rolling deformation ranges from 75% to 85%; s3, the profile is conveyed to a line roller type tension straightening machine through a roller way to be subjected to tension straightening treatment, the speed is 0.4-0.6 m / s, and the temperature of the straightened profile is larger than or equal to 700 DEG C; and S4, air cooling treatment is carried out, then tongue-shaped parts at the head and the tail are cut off, oxide skin on the surface layer is cleaned, and two flat-bulb titanium profiles with the same specification are obtained through water cutting symmetric segmentation in the rolling direction. According to the method, the temperature difference between the head and the tail can be reduced, the structure property uniformity and the batch stability are improved, and the minimum length of the prepared flat-bulb titanium profile can reach 12-15 m.

A scanning microscope unit includes: a light source for outputting irradiation light; a photodetector for detecting observation light generated from an observation object in response to irradiation with the irradiation light; a MEMS mirror for scanning the irradiation light over the observation object, and for guiding the observation light toward the photodetector; a scanning lens for guiding the irradiation light scanned by the MEMS mirror, to a microscope optical system, and for guiding the observation light imaged by the microscope optical system, to the MEMS mirror; and a frame member formed in a frame shape to define an opening, and disposed on a side of the microscope optical system with respect to the scanning lens such that the irradiation light and the observation light pass through the opening. The frame member includes a calibration portion provided in a side portion defining the opening, and for generating calibration light including a sensitivity wavelength of the photodetector in response to an incidence of the irradiation light.

This invention discloses a lane line annotation method. First, it acquires the point and surface results of lane line detection separately. Then, it fuses the point and surface results using a multi-model approach to obtain a fused point set. Next, it tracks the fused point set and selects consecutive frames for tracking and fusion to obtain a merged point set. Finally, it performs fitting based on the merged point set and uses the fitting result as the lane line annotation result. This method automates lane line annotation and significantly improves its accuracy. Furthermore, it can quickly and accurately generate a large amount of sample data, providing a training set for lane line detection models and increasing the efficiency of developing new lane line detection models.

A method of manufacturing a stacked core includes: a first step of forming a first pilot hole in a strip-like metal plate by a first punch; a second step, in a state in which a first pilot pin is inserted into the first pilot hole to position the metal plate, of working a predetermined portion of the metal plate by a second punch, and of press-fitting a worked portion of the metal plate that is worked by the second punch into the metal plate; a third step of forming a second pilot hole in the metal plate by a third punch, after the second step and before another work is performed on the metal plate; and a fourth step of blanking a region including the worked portion by a fourth punch to form a first blanked member, in a state in which a second pilot pin is inserted into the second pilot hole to position the metal plate, after the third step.