The marble testing platform is a high-precision reference measuring tool made of natural granite. It is widely used in the calibration of instruments, precision machinery components, and testing tools. Granite has fine crystals and a hard texture, and its non-metallic properties prevent plastic deformation. Therefore, the marble testing platform exhibits excellent hardness and precision, making it an ideal flat reference tool.
The angular difference method is a commonly used indirect measurement method for flatness verification. It uses a level or autocollimator to connect measurement points via a bridge. The tilt angle between two adjacent points is measured to determine the flatness error of the platform. Measurement points can be arranged in either a meter or grid pattern. The meter pattern is simple to use, while the grid pattern requires more reflectors and is more complex to adjust. This method is particularly suitable for medium- to large-sized marble testing platforms, accurately reflecting overall flatness error.
When using an autocollimator, the reflectors on the bridge move stepwise along a diagonal line or a specified cross-section. The instrument reads the angle data, which is then converted into a linear flatness error value. For larger platforms, the number of reflectors can be increased to reduce instrument movement and improve measurement efficiency.
In addition to indirect measurement, direct measurement is also widely used to inspect the flatness of marble platforms. Direct measurement directly obtains planar deviation values. Common methods include the use of a knife-edge ruler, shim method, standard plate surface method, and laser standard instrument measurement. This method is also known as the linear deviation method. Compared to the angular deviation method, direct measurement is more intuitive and provides quick results.
Manufacturing Process of Marble Measuring Tools
The production process of marble measuring tools is complex and requires high precision, requiring rigorous control at every step. First, material selection is crucial. The quality of the stone has a decisive impact on the accuracy of the final product. Experienced technicians conduct a comprehensive assessment of color, texture, and defects through observation and measurement to ensure the selection of high-quality materials.
After material selection, the raw stone is processed into blanks of the required specifications. Operators must precisely position the blanks according to the drawings to avoid machining errors. After this, manual grinding is performed, requiring patient and meticulous workmanship to ensure that the work surface meets the design accuracy and customer requirements.
After processing, each measuring tool undergoes rigorous quality inspection to confirm that flatness, straightness, and other accuracy indicators meet the standards. Finally, qualified products are packaged and stored, providing customers with reliable, high-precision marble testing tools.
Through rigorous production processes and high-precision testing, ZHHIMG’s marble testing platforms and measuring tools meet the high demands of the precision manufacturing industry for plane reference and measurement accuracy, providing reliable support for industrial testing and instrument calibration.
Post time: Sep-19-2025