Leica laser tracker helps the precise assembly of roller, which is exclusive and high-precision with super large size

Roller refers to a cylindrical object that can rotate in the mechanical structure. In machinery, the power source (such as motor) is commonly used to drive the roller to drive other materials forward, or use the pressure generated by the roller to process the materials. Rollers are used in many industries, such as papermaking, printing, tire, steel rolling, packaging, etc.

Difficulties and requirements: avoid manual work and improve efficiency and accuracy The positional relationship between the rollers on the production line needs to be corrected, that is, the rollers should be parallel. In the past, conventional measuring tools were used, such as the way that the distance between rollers was controlled by a micrometer bar. Because this method depended on human eye reading, human influence factors were inevitable, the measurement accuracy was unstable, three-dimensional detection could not be realized, and error accumulation made it difficult to ensure the assembly accuracy of the overall device. Customers put forward new requirements for new measurement schemes and testing equipment, which need to eliminate human errors as much as possible, meet the needs of auxiliary assembly of the overall device, have simple operation, high detection and analysis efficiency as much as possible, and reduce downtime. Leica laser tracker: oversize measurement and assembly Leica laser tracker large-scale measurement system is a benchmark equipment of large-scale three-dimensional measurement equipment all over the world. It effectively solves the problem of precision detection of large-scale dimensions of rollers. At the same time, it also provides a new assembly idea for auxiliary assembly of large-scale equipment, which greatly improves the measurement efficiency. In the roller measurement and assembly solution, using the laser tracker at40x combined with b-probe, the measuring radius of the reflecting ball can reach 160m. The scheme can perfectly adapt to the on-site working conditions and has a wide range of uses. It can not only be used to detect the dimensional accuracy of parts, but also use the software function to realize auxiliary assembly. The matched SA software is an analysis software specially for mobile industrial measurement equipment. It has flexible dimension analysis function and is widely used in shipbuilding, energy, aviation and other fields. Two measurement schemes: flexible selection of application scenarios Roller correction can be realized by two methods. One is that the measured roller is perpendicular to the reference line, as shown in the figure below; The other is that all slave rollers are parallel to the master roller. The two measurement schemes provide customers with flexible choice space. Two schemes for roller correction These two schemes can be completed by two ways of measuring the roller. One is to use the roller correction combination tool. Find the highest point and side bus of the roller bus through the blister on the roller measuring tool to realize the alignment of the roller in two directions; Measurement diagram of roller calibration tool The other is to measure two section circles on the cylindrical surface of the roller, as shown in the figure below, and align the roller by observing the center coordinates of the section circle. Schematic diagram of roller section circle measurement Leica laser tracker large-scale measurement system has well solved the problems of precision detection and auxiliary assembly of large-scale parts on site, promoted the transformation of manufacturing industry from analog quantity transfer method to digital quantity transfer method, and realized the digital transformation of measurement site.