Construction Machinery – Counterweight

Counterweights for construction machinery are key load-bearing components for equipment such as forklifts, excavators, and loaders. As the construction machinery industry pursues quality upgrading, OEMs continue to raise their standards for the appearance quality, dimensional precision, and batch consistency of counterweight castings. The traditional manual grinding model suffers from low efficiency and unstable quality, and can hardly meet the needs of mass-production supporting applications.

Counterweights are produced through large sand casting or V-process casting. The castings are large in volume and heavy in wall thickness, and are highly prone to irregular shrinkage and expansion deformation during the casting cooling stage, with deformation varying from piece to piece. At the same time, heavy flashes, burrs, and oxide scale tend to form on the parting surfaces and outer edges of the castings. Traditional fixed fixtures can only be positioned according to standard dimensions and cannot accommodate the actual deformation deviations of castings, frequently resulting in under-grinding, over-grinding, and uneven grinding, which is a core pain point in the industry.

To address the above challenges, Quanyu Industry has developed a dedicated automated grinding solution for counterweights based on its core 3D vision deviation correction technology. The equipment can perform real-time 3D scanning to capture the actual contour of each casting, and uses intelligent algorithms to precisely calculate the deformation of each piece and dynamically compensate for it, completely resolving the positioning deviation problem caused by the deformation of large counterweights. Combined with a flexible grinding structure, it can precisely remove various flashes and burrs and supports flexible mass production of products in multiple specifications.

After the equipment was put into application, the customer's casting grinding yield rate and batch consistency improved significantly, effectively eliminating rework and waste. The automated equipment replaces high-risk manual grinding, significantly improving production efficiency and reducing labor and consumable costs. It precisely matches OEM supply standards, helping the customer achieve the core goals of quality improvement, efficiency enhancement, and cost reduction.

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