The invention belongs to the technical field of building deformation measurement, and specially relates to a method for detecting the verticality of a high tower based on three-dimensional laser scanning. The method comprises the steps: 1), enabling the horizontal distance between a fixed instrument and a tower not to be less than 3/2 of the height of the tower, and obtaining the body point cloud data of a 1/3 circular segment of the vertical projection of the tower; 2), building a 1/3 circular body TIN model, carrying out the fitting of the upper and lower centers of the circular tower, and extracting the section of the tower; 3), calculating the central coordinates of the section of the circular tower, wherein any three non-collinear points on the section can determine a unique circular plane; 4), calculating the longitudinal and lateral inclined components and slope of the tower through the obtained central coordinates of the bottom and top of the circular tower. The method irons out the defects that a conventional verticality detection method for the high tower is difficult in outdoor operation, is difficult in precision control, consumes a large amount of time and manpower, is poor in target data accuracy and is big in data limitation. The method can achieve the detection of the verticality of the high tower quickly at high precision, and has important significance to the detection and monitoring of the similar projects.

Method for detecting verticality of high tower based on three-dimensional laser scanning

The invention discloses a method and a device for controlling laser peening parameters to monitor surface roughness of a blade. The method comprises the following steps: carrying out laser peening treatment on the surface of a variable-section thin-wall complex blade; monitoring the surface roughness of the blade by controlling flat-topped distribution variation degree of a light beam; and finally, achieving design requirements of the surface roughness of the blade. The invention further discloses the device for controlling laser peening parameters to monitor surface roughness of the blade, and the device comprises a computer control system, a laser unit power supply, laser peening equipment, a transmitting mirror, a blade part robot, a blade part robot control system, a water coating robot control system, a water coating robot, a surface roughness measurer and an information acquisition system. The method and the device disclosed by the invention can treat surface roughness of various thin-wall complex curved surfaces, so that surface precision is improved.

Method and device for controlling laser peening parameters to monitor surface roughness of blade

The invention discloses a laser triangulation method-based three-dimensional measuring instrument. The laser triangulation method-based three-dimensional measuring instrument includes a laser device, an acquisition device, a movement device, a total control system and three-dimensional analysis processing software embedded in the total control system; the laser device and the acquisition device are fixedly arranged on the movement device; and the laser device, the acquisition device and a fixture for a product to be detected are arranged in a three-point manner. The invention also discloses a laser triangulation method three-dimensional measuring instrument-based flatness detection method. According to the laser triangulation method-based 3D measuring instrument and the flatness detection method of the invention, the laser device, the acquisition device and the movement device are highly integrated in the measuring instrument, and therefore, a scanning range can be set flexibly, and the measuring instrument can be compatible with the detection of products in various sizes; scanning and image acquisition are performed on the product to be detected through the laser device and the acquisition device; the three-dimensional analysis processing software analyzes and combines acquired data and generates the three-dimensional model information of the product to be detected and marks and distinguishes the relative height information of the surface of the product element by using different colors; and the three-dimensional analysis processing software analyzes and measures the above image information.

Laser triangulation method-based three-dimensional measuring instrument and flatness detection method

A laser processing device and a laser processing method. The laser processing device includes a cutting table (10), configured to load a workpiece (15) to be processed; a distance-measuring unit (12), configured to perform distance measurement on the workpiece (15) along a predetermined processing path (11) to obtain three-dimensional processing data (16) of the workpiece (15); and a laser processing unit (13), configured to process the workpiece (15) by using laser light (130) according to the three-dimensional processing data (16). In a process of laser processing, the laser processing device can adjust a focus position of the laser light (130) on the workpiece (15) in real time according to the three-dimensional processing data (16), and ensure that the laser light (130) is precisely focused on the surface of the workpiece (15), so that processing quality of the laser processing is improved, adaptability to a deformation degree of the workpiece (15) is enhanced, a rejection rate is reduced, and product yield is improved.

Laser processing device and laser processing method

The invention discloses a detection device for spacial transmission pointing precision of a machining light beam. The detection device comprises a laser generation part, a light path part, a galvanometer system and a detection part; a laser device, a beam expander and a reflector I are sequentially fixed on a light path in the horizontal direction; an azimuth rotary light passing shaft and a reflecting mirror II are fixed on the light path in the vertical direction; a pitching rotary light passing shaft and the azimuth rotary light passing shaft are arranged in the light path in a connected mode; the galvanometer system is located behind the pitching rotary light passing shaft and is connected to a driving motor in a galvanometer; and position sensitive chip arrays are fixed on a horizontal display rack and a vertical display rack respectively and control the pointing of the laser beam emitted into the galvanometer through an industrial personal computer. The invention provides the detection device for the spacial transmission pointing precision of the machining light beam. The detection device has the advantages that a light beam pointing closed-loop control experiment can be realized, manual intervention is not needed, and high-speed and high-precision control over the laser beam can be realized.

Detection device for spacial transmission pointing precision of machining light beam

The utility model discloses a laser on line measurement processes detection device, the device is including being located processing laser instrument, optic system and the laser beam machining head in the same light path in proper order, and the laser rangefinder system, computer control system removes subassembly and workstation, measured data before the laser rangefinder system is used for obtaining work piece processing after, is including the space coordinate value and the normal line angle of every some work piece to offer computer control system. The device collects laser survey, processing and measuring in an organic whole, can realize before the laser beam machining that on line measurement waits to process the plane or the curved surface geometry appearance of work piece, obtains true plane or spatial structure size and characteristic, eliminate wait to process the work piece because of the deformation of production in processing treatment flowsheet in earlier stage or secular distortion cause and theoretical digifax between the error, improved laser beam machining precision and quality. The device can two -dimensional platform and the measurement of three -dimensional curved surface and detection size precision and quality to can improve laser beam machining precision and quality.

Laser on line measurement processes detection device

The invention discloses an online laser measuring, machining and detecting method and a device. By integrating laser measuring, machining and detecting, the geometric dimension and shape of the planar or curved surface of a work piece to be machined can be measured online before laser machining to obtain the actual planar or spatial structure dimension and feature, the error between the work piece to be machined and a theoretical mathematical model caused by deformation or time-dependent deformation produced in early-stage machining is eliminated, and the precision and quality of laser machining are improved. The device comprises a machining laser, an optical path system, and a laser machining head which are sequentially disposed on the same optical path. The device further comprises a laser ranging system, a computer control system, a mobile component, and a workbench. The laser ranging system is used to acquire measurement data of the work piece before and after machining, including the space coordinates and the normal angle of each point of the work piece, and offer the measurement data to the computer control system. By using the device, the precision and quality of 2D platform and 3D curved surface dimension measurement and detection can be improved, and the precision and quality of laser machining can be improved.

Online laser measuring, machining and detecting method and device

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Laser on line measurement processes detection device

Online laser measuring, machining and detecting method and device