Background
In the field of high-precision inspection, a micron-level accuracy gap translates directly into a core difference in product quality and market competitiveness. Large gantry coordinate measuring machines (CMMs), as core equipment for precision structural component machining, high-end mold making, and new energy parts inspection, impose extremely stringent requirements on the vibration environment of the production facility. Even the slightest ground disturbance can cause measurement data distortion and non‑conformance of workpiece accuracy. To address industry pain points such as low‑frequency vibration, multi‑directional disturbances, and operational resonance associated with heavy‑duty high‑precision inspection equipment, Liva Environmental Technology (Shanghai) Co., Ltd. (hereinafter referred to as “Liva Shanghai”) has successfully completed a heavy‑duty foundation vibration isolation project for a large bridge‑type gantry CMM at a Nanjing‑based company. Leveraging its proprietary core technologies and integrated turnkey service capabilities, Liva Shanghai deployed a customized foundation pit counterweight plus damping spring isolation system solution, completely resolving the equipment vibration interference issue and establishing a stable foundation for the customer's precision inspection production.
Customized solutions address vibration isolation challenges for heavy‑duty precision equipment.
The bridge‑type gantry CMM measurement center is an ultra‑high‑precision core metrology instrument with extreme sensitivity. Micro‑vibrations generated by overhead crane operations, CNC machine cutting, in‑plant forklift transport, and outdoor vehicle traffic on the plant floor can all be transmitted to the equipment table, causing measurement data deviation and loss of measurement accuracy, which severely constrains the product quality inspection pass rate and production delivery efficiency.
Conventional basic isolation products such as shims and ordinary rubber pads are only capable of addressing simple high‑frequency vibrations and cannot meet the low‑frequency isolation, resonance prevention, and multi‑dimensional vibration control requirements of heavy‑tonnage gantry equipment, thus failing to satisfy the stringent standards of high‑precision inspection. Based on the actual site operating conditions and equipment accuracy requirements, Liva Shanghai participated in the design and delivery of an integrated turnkey isolation solution combining foundation pit civil construction, heavy concrete inertial mass counterweights, and LIVA series damping spring isolators.
Throughout this project, Liva Shanghai completed the full process including precise excavation of the foundation pit, pouring of reinforced concrete inertial blocks, precise layout of isolator mounting points, hydraulic jacking and positioning, and system commissioning and acceptance, achieving one‑stop delivery from initial site survey and solution customization through civil works coordination to on‑site construction and final acceptance. The smooth execution and stable operation of this project fully demonstrate Liva Shanghai's product performance, customized solution capabilities, and strong large‑scale project execution expertise, earning high recognition from the customer.
Solution Features
Heavy-load low-frequency isolation, eliminating equipment resonance failure
The equipment incorporates a core structure integrating multiple sets of composite springs with built-in hydraulic damping, overcoming the stability shortcomings of conventional spring isolation products. The system features a low natural frequency, effectively isolating both high- and low-frequency composite vibrations generated by workshop equipment operation and plant-floor traffic. Paired with an ultra-heavy concrete inertial mass that significantly enhances the overall foundation stiffness, it effectively suppresses the center-of-gravity shifts and low-frequency disturbances during the long-stroke movement of the gantry CMM. This resolves common resonance and jitter issues in heavy equipment, delivering isolation performance far superior to conventional isolation products and perfectly matching the operating conditions of large-tonnage precision equipment.
Three-dimensional omnidirectional isolation, fully shielding vibration interference
Unlike traditional solutions that only address vertical vibration, this isolation system combining isolators with the inertial mass achieves three-dimensional omnidirectional isolation across vertical, horizontal, and torsional impact directions. It not only attenuates vertical vibrations from the floor but also rapidly absorbs lateral disturbances from crane lifting, forklift transport, and machine tool operations, as well as torsional impact forces during equipment operation, comprehensively blocking vibration transmission paths and ensuring that the CMM inspection table remains consistently stable, firmly safeguarding micron-level high-precision measurement standards.
Seamless integration with civil works, ensuring safe and stable project implementation
For this project, the scope encompassed foundation pit dimension planning, civil reinforcement drawing design, precise inertial mass weight calculation, and scientific arrangement of isolator placement points. On site, hydraulic jacks were used in grouped synchronous lifting to achieve precise positioning of the concrete inertial mass and installation of isolators, effectively distributing the equipment's tens-of-tons deadweight load. Each isolator is designed with ample load margin, fundamentally preventing risks of settlement, tilting, or shifting after prolonged operation, achieving seamless integration between civil construction and the isolation system.
Corrosion-resistant, durable, and low-maintenance, adaptable to complex industrial conditions
The core isolation components are manufactured from high-strength alloy spring steel with multi-layer anti-corrosion surface treatments, combined with built-in damping anti-resonance structures. This effectively resists environmental hazards in machining workshops such as dust, humidity, and cutting fluid contamination, offering high-temperature resistance, aging resistance, and anti-resonance characteristics. The equipment service life exceeds ten years with no need for frequent adjustments or maintenance, substantially reducing the customer's long-term operational and maintenance costs while ensuring the sustained stability of precision equipment.
Flexible adaptability across multiple scenarios, empowering a wide range of precision equipment
The inertial mass + damping spring isolation system solution deployed in this project offers strong versatility across applications. In addition to gantry CMMs, it is widely adaptable to various heavy-duty high-precision metrology and machining equipment, including bridge-type gantry machining centers, large optical inspection instruments, precision grinders, and 2D vision measuring machines.
In China's high-end machining, mold making, new energy, optical manufacturing, and other industries, workshop vibration interference with precision equipment accuracy has become a widespread pain point. Vibration issues have emerged as a critical bottleneck constraining the quality improvement and efficiency enhancement of high-end manufacturing. Leveraging its in-house R&D and production advantages, professional site survey technical team, and standardized on-site construction solutions, Liva Shanghai can provide a full-process one-stop solution for various large, medium, and small high-precision equipment, covering "preliminary vibration survey – customized solution design – product supply and installation – after-sales maintenance," precisely resolving a wide range of industrial vibration challenges.
Looking ahead, Liva Shanghai will continue to deepen its presence in the industrial vibration isolation core sector, continuously iterating and upgrading its major product lines including damping spring isolators, pneumatic isolators, and rubber isolators. The company will refine and segment solutions based on equipment tonnage, accuracy levels, and application scenarios, consistently delivering highly reliable, long-term stable vibration and seismic protection solutions to enterprises in semiconductors, optical instrumentation, high-end CNC, precision inspection, and other fields, supporting the upgrade of China's high-end equipment manufacturing industry toward greater precision, sophistication, and intelligence.
