As the global ultra-precision manufacturing sector progresses, the demand for foundational stability in machinery—from advanced semiconductor tools to complex coordinate measuring machines (CMMs)—has never been higher. At the heart of this stability lies the precision base. ZHONGHUI Group (ZHHIMG®) utilizes its proprietary ZHHIMG® Black Granite, boasting a superior density of ≈ 3100 kg/m³ that surpasses standard materials, setting the industry benchmark for rigidity and long-term stability. Yet, the unparalleled accuracy of these components is only realized through a meticulous and expertly executed installation process. How is true nanometer precision maintained from the factory floor to the operational environment? The answer lies in the scrupulous method of leveling.
The Critical Role of Three-Point Support in Achieving True Flatness
Our professional leveling process is anchored in the fundamental geometric principle that a plane is uniquely defined by three non-collinear points. Standard ZHHIMG® support frames are engineered with five total contact points: three Primary Support Points (a1, a2, a3) and two Auxiliary Support Points (b1, b2). To eliminate the structural stress and twist inherent in four or more primary contact points, the two auxiliary supports are intentionally lowered during the initial setup phase. This configuration ensures the granite component rests solely on the three primary points, allowing the operator to adjust the entire plane’s level simply by regulating the height of only two of these three crucial contact points.
The process begins by ensuring the component is positioned symmetrically on the stand using simple measurement tools, guaranteeing equal load distribution across all support points. The stand itself must be firmly planted, with any initial wobble corrected via adjustments to the base’s feet. Once the primary three-point support system is engaged, the technicians proceed to the core leveling phase. Using a high-precision, calibrated electronic level—the very instruments our engineers use in our 10,000 m² climate-controlled environment—measurements are taken along both the X and Y axes. Based on the readings, subtle adjustments are made to the primary support points until the platform’s plane is brought as close to zero deviation as possible.
Stabilization and Final Verification: The ZHHIMG Standard
Crucially, the leveling process does not end with the initial adjustment. In line with our quality policy, “The precision business can’t be too demanding,” we mandate a critical stabilization period. The assembled unit must be left to settle for a minimum of 24 hours. This time allows the massive granite block and the supporting structure to fully relax and release any latent stresses from handling and adjustment. After this period, the electronic level is used again for final verification. Only when the component passes this secondary, rigorous check is it deemed ready for operational use.
Following final confirmation, the auxiliary support points are carefully raised until they make light, non-stressful contact with the granite surface. These auxiliary points serve purely as safety elements and secondary stabilizers; they must not exert significant force that could compromise the perfectly set primary plane. For continuous, assured performance, we advise periodic re-calibration, typically every three to six months, as part of a rigorous preventative maintenance schedule.
Protecting the Foundation of Precision
The precision of a granite component is a long-term investment, one that demands respect and proper maintenance. Users must always adhere to the component’s specified load capacity to prevent irreversible deformation. Furthermore, the working surface must be protected from high-impact loading—no forceful collisions with workpieces or tools. When cleaning is required, only neutral pH cleaning agents should be used. Harsh chemicals, such as those containing bleach, or abrasive cleaning tools are strictly forbidden as they can damage the fine crystalline structure of the ZHHIMG® Black Granite. Immediate cleanup of any spills and the occasional application of specialized sealants will ensure the longevity and sustained accuracy of the granite foundation upon which the world’s most precise machines rely.
Post time: Nov-19-2025