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113results about How to "Corrective tilt" patented technology

Method for automatically adjusting inclination between image photographing module group sensor and lens

The invention provides a method for automatically adjusting inclination between an image photographing module group sensor and a lens. The method comprises the following steps that test light is provided via a light source and a scalar board; a positioning platform drives the lens to move relative to the sensor according to a preset step; an image acquisition system acquires and transmits MTF data of test light of an image photographing module group; curve fitting is performed on the MTF data so that highest point distance difference of the MTF data of a designated area is obtained and thus degree of inclination between the image photographing module group sensor and the lens is calculated; and the image photographing module group is corrected via the positioning platform according to the degree of inclination. Curve fitting is performed on a high-step defocus curve to predict the calculation result of a low-step defocus curve so that efficiency of the whole test is enhanced. Besides, a six-degree-of-freedom parallel positioning platform can be used as the positioning platform so that the center of the positioning platform is ensured to be overlapped with the center of the sensor, and thus inclination between the sensor and the lens is ensured to be corrected accurately and timely.
Owner:NINGBO SUNNY OPOTECH CO LTD

Five-axis controlled motion control mechanism of water cutting head with functions of rotation and swing

The invention relates to a five-axis controlled motion control mechanism of a water cutting head with the functions of rotation and swing, which comprises a connecting flange (1) and a connecting frame (2) of a rotating shaft. The mechanism is characterized in that a rotating motor support (11) is mounted on the connecting frame (2) of the rotating shaft, a small synchronizing wheel (13) is mounted on an output shaft of a rotating motor (47), the small synchronizing wheel (13) is connected with a big synchronizing wheel (8), the big synchronizing wheel (8) is mounted at the upper end of a hollow main shaft (6), and the lower end of the hollow main shaft (6) is connected with a swing connecting frame (17); and a swing motor (48) is mounted on the swing connecting frame (17), the swing motor(48) is connected with the small synchronizing wheel (19), the small synchronizing wheel (19) is connected with the big synchronizing wheel (20) through a synchronizing belt, the big synchronizing wheel (20) is mounted on a swing shaft (21), and the water cutting head (49) is mounted on the swing shaft (21). As the mechanism increases the control with two degrees of freedom of rotation and swing,the mechanism is conductive to improving the precision and the efficiency of processing of water cutting, simultaneously expands the application range of the water cutting and realizes the five-axiscontrol in the true sense.
Owner:DARDI INT CORP

Detection method for perpendicularity of pier stand column

The invention provides a detection method for perpendicularity of a pier stand column.The method comprises the following steps that any position where a pier can be seen is selected as an observation station point; the average angle gamma 1 of the included angles alpha 1 and beta 1 formed between the horizontal line and observation lines from the observation point to the two side edges of the pier, the point of intersection of the edge of the angle and the outer wall of the pier is the point A, and coordinate values of the point A are measured; a point B is determined on the outer wall of the pier in the same way, and coordinate values of the point B are measured; according to the radius of the cross section of the pier, the circle center O1 and the circle center O2 of the cross sections where the point A and the point B are located are determined; a vertical line is formed from the point O1 to the central axis of a bridge deck, the vertical point of the point O2 on the vertical line is M1, and the perpendicularity of the first pier is obtained through calculation according to the distance between the O1/O2 and M1 and the perpendicular height difference between the point A and the point B.According to the method, a high-precision total station is adopted for detecting the perpendicularity of the stand column, the space projection of the central axis of a columnar building is obtained through multiple cross sections in a non-contact mode, reliable data is provided for building inclined state evaluation, and basic data is provided for avoiding and correcting stand column inclination.
Owner:HUNAN LIANZHI BRIDGE & TUNNEL TECH
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