In the field of precision industrial production and cutting-edge scientific research exploration, granite platform with its excellent seismic performance has become a key equipment to ensure the smooth development of various high-precision operations. Its strict shock-proof rating standard provides a reliable guarantee for many work scenarios that are extremely sensitive to vibration.
First, the determination basis of the earthquake proof grade of granite platform
Material characteristics: Granite platform is made of natural granite, after millions of years of geological processes, the internal crystal structure is closely arranged and highly uniform. This unique structure gives granite a very low rate of elastic modulus change, when subjected to shock, compared with other common materials such as metal, can control its elastic deformation in a very small range. According to the determination of authoritative testing institutions, the elastic deformation of granite in the standard vibration test environment is only 1/10-1/20 of that of ordinary metal materials, which lays a solid material foundation for the high-level seismic performance of the platform.
Structural design: From the perspective of macro structure, the granite platform is designed with optimized geometric shape and support layout. The overall length-width-height ratio of the platform is carefully calculated to ensure a stable center of gravity and reduce the risk of shaking caused by vibration. At the same time, the distribution of the support points is scientifically planned according to the principles of mechanics, which can evenly distribute the weight of the objects placed on the platform and the impact force generated by external vibrations. For example, in the large granite platform, the multi-point support structure is used, and the distance error between the adjacent support points is controlled within ±0.05mm, which effectively avoids local stress concentration and further improves the seismic capability of the platform.
2. Detailed indicators and application scenarios of each shock-proof level
Level I shock-proof standard (ultra-high precision requirement scenarios)
Vibration displacement index: Within the range of simulated seismic wave vibration frequency (0.1Hz-100Hz), the peak value of vibration displacement at any position on the platform surface does not exceed 0.001mm. When the low-frequency vibration generated by the operation of the surrounding large machinery (such as the vibration of the heavy machine tool at a frequency of about 1Hz-10Hz) is interfered with, the high-precision optical measuring instruments placed on the platform, such as atomic force microscopy, the relative displacement change between the measuring probe and the measured sample is negligible, ensuring that the measurement accuracy at the nanoscale is not affected.
Application scenario: It is mainly used in the lithography process of semiconductor chip manufacturing. Chip manufacturing requires extremely high lithographic accuracy, and the line width has reached the nanometer level. In the lithography process, the granite platform needs to provide stable support for the lithography machine, isolate the vibration generated by the operation of other equipment in the workshop, and ensure the accurate transfer of the lithography pattern, thus greatly improving the yield of chip manufacturing. According to industry statistics, the use of a chip manufacturing line that meets the first-level shock-proof standard granite platform has increased the yield by 15%-20% compared with the use of ordinary platforms.
Level 2 anti-shock standard (high-precision scenario)
Vibration displacement index: under the vibration frequency of 0.1Hz-100Hz, the peak vibration displacement of the platform surface is controlled within 0.005mm. For microscopic particle detection experiments conducted in scientific research laboratories in universities, such as scanning tunneling microscope (STM) experiments, this level of shockproof performance can ensure that the relative position between the tip of the STM and the sample is stable even if there are certain conventional vibration sources such as personnel moving around the laboratory and equipment moving around the laboratory. Thus, the quantum state information of microscopic particles is accurately captured, which provides a guarantee for researchers to obtain accurate experimental data.
Application scenario: Widely used in high-end precision instrument manufacturing, such as high-precision electronic balance production debugging process. Electronic balances are extremely sensitive to vibration, and even small vibrations can cause deviations in measurement results. The granite platform, which meets the second-level shock-proof standard, can provide a stable environment for the calibration and commissioning of the electronic balance, ensure that the measurement accuracy of the balance reaches the microgram level, and meet the industry demand for high weight measurement accuracy such as pharmaceutical and jewelry identification.
Three-level shock-proof standard (high precision scenario)
Vibration displacement index: in the vibration frequency range of 0.1Hz-100Hz, the peak vibration displacement of the platform surface does not exceed 0.01mm. When facing the vibration generated by the operation of medium-sized equipment common in the factory workshop (the vibration frequency is generally 10Hz-50Hz), the ordinary measuring equipment placed on the granite platform, such as the coordinate measuring instrument, can maintain the measurement accuracy is stable, and the deviation of the measurement data is controlled within a very small range.
Application scenario: Suitable for precision measurement in auto parts manufacturing. The machining accuracy of automobile engine cylinder block, transmission gear and other parts directly affects the performance and reliability of automobile. In the measurement of these parts, the granite platform of the three shockproof performance can effectively isolate the workshop equipment running vibration, to ensure that the coordinate measuring instrument accurately measure the size of the parts, form and position tolerances and other parameters, to provide strong support for the quality control of auto parts, improve the production of auto parts pass rate.
Three, strict quality testing to ensure that the earthquake level meets the standard
In order to ensure that each granite platform can meet the corresponding earthquake-proof grade standards, we have established a set of strict and perfect quality inspection system. In the production process, a comprehensive physical property test is carried out on each piece of granite raw material to ensure that its internal structure is uniform and without obvious defects. After the platform processing is completed, the advanced vibration simulation test equipment is used to simulate various complex vibration environments to test the platform. Through the high-precision laser displacement sensor, real-time monitoring of the displacement changes of each point on the surface of the platform during the vibration process, and the data is transmitted to a professional data processing system for analysis. Only when the vibration indicators of the platform are fully in line with the corresponding shock-proof grade standards, they are allowed to be put into the market.
To sum up, granite platform with its scientific shockproof grade standards, excellent shockproof performance and strict quality control, for industrial production and scientific research work in high-precision operations to provide indispensable stable support, is the pursuit of the ultimate accuracy and reliability of the choice.
Post time: Mar-28-2025