Gantry surface grinder Applications and characteristics: Gantry surface grinders employ pressure‑boosting hydraulic cylinders. Pressure‑boosting hydraulic cylinders, also known as boosters, utilize the differing effective areas of pistons and plungers to generate high pressure in a localized region. They are available in single‑acting and double‑acting configurations. The telescopic cylinder used in gantry surface grinders consists of two or more piston cylinders; the inner bore of the front piston cylinder serves as the cylinder for the rear slow‑stroke piston cylinder. When extended, it provides a longer working stroke, while retracted it maintains a compact overall footprint.

　　 Gantry surface grinder It is primarily used for external cylindrical grinding to machine the flat surfaces of large, short, and wide workpieces. During grinding, the workpiece can be directly clamped on the table surface or an electromagnetic chuck. Gantry-type surface grinders feature a gantry configuration, consisting of a bed, twin columns, and a crossbeam that form a closed rigid frame. The bed employs double V‑type guideways, while the table guideway surface is coated with wear‑resistant polytetrafluoroethylene. A traversing carriage moves laterally along the crossbeam guideways, with lateral feed driven by a DC motor. The Hz‑k1610 model utilizes CNC‑controlled lateral feed. Longitudinal movement of the table is powered by a vane‑type oil pump, offering stepless speed regulation through an open hydraulic system equipped with oil‑temperature control for both hydraulic fluid and guideway lubrication. The grinding head can move vertically along the carriage’s vertical guideways. Vertical feed is provided in three modes: rapid feed, automatic feed, and manual feed. The Hz‑k1610 features CNC‑controlled feed, ensuring convenient operation. The grinding head spindle adopts a sleeve‑type design with direct drive; its bearings are high‑precision angular contact ball bearings. Injuries resulting from operators becoming caught in or pinched by rotating or moving parts of machine tools are common. Such accidents often occur due to protruding components on rotating parts, inadequate protective guards, and operator error. For example, rotating centers on lathes, threaded pins on faceplates, exposed gear wheels, and drive screws may entangle clothing cuffs, ties, or headscarves. Similarly, long hair left unsecured—particularly among lathe operators—can become caught in rotating spindles, leading to severe injuries. On drilling machines, operators wearing gloves may have their hands drawn into the rotating drill bit or chips, resulting in hand fractures.

　　Personal injury accidents caused by collisions between operators and machine tools. This category encompasses three scenarios: collisions between the operator and the machine tool, the operator entering the machine tool’s working area, and the machine tool intruding into the operator’s workspace. Operators may strike the machine tool due to improper operating procedures, excessive force, incorrect tooling specifications, or worn cutting tools. For example, using an improperly sized or worn wrench to tighten a nut—and applying excessive force—can cause the wrench to slip off the nut, throwing the operator off balance and resulting in impact with the machine tool, thereby causing injury. Additionally, if an operator or other personnel occupy an unsuitable position, they may be affected by moving parts of the machine tool; for instance, standing within the travel envelope of a gantry surface grinder or a shaving‑machine’s moving components, coupled with a lack of focused attention on the machine, can lead to such incidents. Gantry surface grinder Impact from the workbench or the shaver’s sliding block. Splashing fine abrasive particles and metal chips can cause scratches and burns. Flying abrasive material and fragmented debris can easily injure the eyes. Statistics show that, during cutting operations, eye injuries account for approximately 35% of all workplace accidents. Accidents caused by operators slipping or falling are also common; these incidents typically result from poor working conditions, such as inadequate lighting, uneven or contaminated floors and footrests, improper machine layout, narrow passageways, and improperly stacked parts and semi-finished products.

　　Prioritizing safety in the machine tool industry is essential for safeguarding the personal well-being of technical personnel, upholding sound operational standards for companies, and providing effective guidance and oversight to drive the industry’s overall development. We need the entire society to pay close attention to safety issues in the machine tool sector, ensuring that it becomes a safe and secure industry.