You Ji HMC Series

You Ji HMC Series Horizontal Machining Centres Heavy-Duty Horizontal Machining Centres from 500 mm to 2,500 mm Pallet Size The You Ji HMC Series is a comprehensive range of high-rigidity horizontal machining centres engineered for demanding precision machining, heavy metal removal and the production of large, complex components. With models ranging from the compact HMC500 through to the enormous HMC2500, the series provides a scalable horizontal machining solution for everything from precision production components to large energy, aerospace, defence and heavy engineering applications. Available with B-axis rotary tables and, across the range, BP automatic pallet changer configurations, the HMC Series combines high structural rigidity, powerful spindle performance and large component capacity with the productivity advantages of horizontal machining. Why Choose the You Ji HMC Series? The You Ji HMC Series has been engineered around one fundamental requirement: maintaining machining accuracy under demanding cutting conditions. Key features include: High-rigidity Box-in-Box column construction Twin-drive X-axis Servo Tandem Control Heavy-duty roller-type linear guideways High-rigidity spindle systems Precision B-axis rotary table Automatic pallet changer configurations BT50 spindle taper throughout the range Large-capacity tool changer Through-spindle coolant High-capacity chip management Optional linear scales for high-precision applications Models accommodating workpieces weighing up to 15,000 kg The result is a horizontal machining centre designed not simply for productivity, but for sustained accuracy when machining large and difficult components. High-Rigidity Box-in-Box Construction One of the defining features of the You Ji HMC Series is its Box-in-Box structural design. Unlike a conventional single-column horizontal machining centre, the X-axis slideways are positioned at both the top and bottom of the Box-in-Box column. This configuration substantially increases structural balance and rigidity, helping the machine resist deformation and vibration generated during heavy machining. You Ji states that its Box-in-Box design increases heavy cutting capability by 15% compared with a conventional single-column arrangement. The benefits include: Reduced vibration Improved surface finish Increased tool life Greater machining precision Improved contouring accuracy Increased stability during heavy cutting For manufacturers machining large steel, cast iron or difficult-to-machine components, this structural rigidity can make a significant difference to both productivity and component quality. Twin-Drive X-Axis Servo Tandem Control The X-axis uses a Servo Tandem Control system with twin simultaneously driven ballscrews. Rather than driving the large moving structure from a single point, the tandem system provides balanced drive forces across the X-axis. This helps reduce inertia-induced vibration during axis movement while improving positional control. Combined with the wide-span X-axis slide arrangement and high-load roller guideways, the system provides excellent stability during both rapid positioning and heavy machining. Heavy-Duty Roller Linear Guideways All main slideways utilise high-precision recirculating roller-type linear guideways. These provide the combination of: High load capacity Low friction Rapid axis movement High rigidity Excellent positioning response The Z-axis in particular is designed to provide the load capacity required for heavy-duty cutting. On the vertical Y-axis, twin counterbalance cylinders support the spindle assembly, helping provide controlled and responsive movement throughout the Y-axis travel. High-Rigidity BT50 Spindle Every machine in the HMC range is equipped with a heavy-duty BT50 spindle, providing the rigidity required for substantial milling, drilling and boring operations. For the HMC500 to HMC800, the spindle incorporates high-precision, high-rigidity NN-series bearings designed to maintain precision during prolonged machining. The larger HMC1000 to HMC2500 machines employ a substantial 220 × 220 mm square RAM spindle design, engineered to withstand both axial and radial cutting forces. This makes the larger HMC models particularly suitable for deep machining and large components where significant spindle reach is required. Powerful Spindle Performance Spindle performance is matched to the size and cutting capability of each machine. HMC500 / HMC630 8,000 rpm spindle 15 / 18.5 kW spindle motor BT50 tooling HMC800 6,000 rpm spindle 22 / 26 kW spindle motor BT50 tooling HMC1000 / HMC1200 3,500 rpm spindle 22 / 26 kW spindle motor HMC1600 / HMC2000 / HMC2500 3,500 rpm spindle 30 / 37 kW spindle motor The larger machines are therefore configured specifically for the high-torque, heavy-cutting requirements associated with large-component machining. A dual-speed gearbox is standard on the larger HMC1000–2500 machines and available as an option on the HMC500–800 range. Precision B-Axis Rotary Table The HMC Series incorporates a high-precision B-axis rotary table using a precision worm gear and worm shaft arrangement. Standard indexing resolution is 0.001°, allowing highly accurate multi-face machining from a single component setup. The B-axis provides: Positioning accuracy: ±7.5 arc seconds Repeatability: ±5 arc seconds 0.001° minimum indexing High-torque servo drive A high-resolution encoder can further support demanding rotary positioning applications. This allows complex components to be machined on multiple faces without repeated manual repositioning, reducing setup time while improving geometric relationships between machined features. Automatic Pallet Changer – BP Models For increased productivity, the HMC Series is available in BP automatic pallet changer configurations. HMC500BP – HMC800BP These machines utilise a compact 180° swing-type automatic pallet changer. The internal swing design allows the machine to rapidly exchange components while maintaining a relatively compact footprint. HMC1000BP – HMC2500BP The larger machines utilise a shuttle-type automatic pallet changer, providing the capacity required to exchange significantly larger and heavier components. The APC allows one component to be loaded, unloaded or set while another component is being machined. This dramatically reduces spindle idle time and makes the BP models particularly attractive for: Batch production Long-cycle machining High-value components Unattended machining Flexible manufacturing High-Precision Pallet Location The pallet changing system uses a four-pin locating arrangement with air blast cleaning at all four locating positions. This ensures the pallet and clamping surfaces remain clean before location and clamping, helping maintain accuracy and repeatability between pallet changes. Large Workpiece Capacity Where the HMC Series really differentiates itself is its sheer range of component capacities. Model X Travel Y Travel Z Travel Table Size Maximum Table Load HMC500 800 mm 750 mm 800 mm 500 × 500 mm 500 kg HMC630 1,050 mm 750 mm 1,000 mm 630 × 630 mm 1,000 kg HMC800 1,300 mm 1,000 mm 1,200 mm 800 × 800 mm 1,500 kg HMC1000 1,500 mm 1,000 mm 1,200 mm 1,100 × 1,000 mm 3,000 kg HMC1200 1,800 mm 1,500 mm 1,500 mm 1,400 × 1,200 mm 5,000 kg HMC1600 2,200 mm 1,500 mm 1,500 mm 1,600 × 1,400 mm 8,000 kg HMC2000 3,000 mm 1,800 mm 1,500 mm 2,200 × 1,800 mm 10,000 kg HMC2500 3,400 mm 1,800 mm 2,000 mm 2,600 × 2,200 mm 15,000 kg This enormous capacity range means the same basic machine philosophy can be applied from relatively compact components through to workpieces weighing 15 tonnes. 40-Tool Automatic Tool Changer A 40-tool automatic tool changer is standard across the HMC range. The ATC is mounted outside the machining area and uses a double-arm tool changing mechanism with automatic shortest-route tool selection. Standard tool capacity includes: BT50 tooling 40 tool positions Maximum tool diameter: Ø125 mm Maximum tool length: 400 mm Maximum tool weight: 25 kg Tool-to-tool change time: 5 seconds For applications requiring greater tool capacity, 60, 80 and 120-tool magazines are available as options. A sub-tool magazine can also be specified for particularly large or heavy special tooling. 17-Bar Through-Spindle Coolant 17-bar through-spindle coolant is included within the standard machine specification. Delivering coolant directly through the cutting tool assists with: Deep-hole drilling Improved chip evacuation Increased tool life Higher cutting performance Improved process reliability The machines also incorporate coolant around the spindle and a coolant gun for setup and cleaning. Designed for Efficient Chip Evacuation Heavy machining generates substantial quantities of swarf, so chip management has been considered as an integral part of the HMC design. The machines incorporate a double-screw chip disposal system, directing swarf towards the chip conveyor for efficient removal from the machining area. Vertical telescopic covers and coolant flushing further assist chip movement while protecting the machine’s precision slideways. Precision and Quality Control The HMC Series is designed to deliver both heavy cutting capability and precision machining performance. The brochure demonstrates ball-bar testing to ISO 230, with a measured roundness result of 14.8 μm against a stated 30 μm standard in the example test. Optional linear scales can be fitted to the X, Y and Z axes to reduce the influence of thermal displacement during high-precision machining. The scales are protected by pressurised air systems to help prevent contamination from oil and dust. Machine Accuracy HMC500 – HMC800 Positioning accuracy: ±0.010 mm Repeatability: ±0.005 mm B-axis positioning accuracy: ±7.5 arc seconds B-axis repeatability: ±5 arc seconds HMC1000 – HMC2500 Positioning accuracy: ±0.015 mm Repeatability: ±0.008 mm B-axis positioning accuracy: ±7.5 arc seconds B-axis repeatability: ±5 arc seconds Standard Equipment The HMC Series is comprehensively equipped as standard, including: FANUC CNC control 40-tool ATC B-axis rotary table with 0.001° indexing Automatic pallet changer on BP models Dual-speed gearbox on HMC1000–2500 Linear scales on X, Y and Z axes on HMC1000–2500 17-bar through-spindle coolant Screw-type chip disposal Steel-belt chip conveyor Spindle air-blast system Electrical cabinet air conditioning Rigid tapping Full enclosure guarding Automatic lubrication Slideway protection Coolant gun Signal tower Working light Optional Equipment A wide range of options allows the machine to be configured around individual production requirements, including: Siemens 840D CNC control 60, 80 or 120-tool ATC 5° indexing rotary table Dual-speed gearbox for HMC500–800 Heidenhain linear scales Scraper-type chip conveyor Coolant chiller Oil mist collector Workpiece probe Tool presetter Transformer CE specification Door interlock Ideal Applications The exceptional size range and heavy-duty construction of the You Ji HMC Series make it particularly suited to: Aerospace structures Defence components Energy and power generation Oil & gas equipment Large valves and pumps Gearbox housings Large diesel engine components Construction and off-highway equipment Rail industry components General heavy engineering Large precision subcontract machining The larger HMC1600, HMC2000 and HMC2500 models are particularly attractive where manufacturers need the productivity of a horizontal machining centre but conventional production HMCs simply do not offer sufficient component capacity. Why Buy a You Ji HMC from TDT Machine Tools? TDT Machine Tools specialises in large and technically demanding CNC machine tool projects. The You Ji HMC Series fits perfectly within our #theBIGmachinecompany philosophy, providing UK manufacturers with access to horizontal machining technology ranging from compact production machines through to enormous 15-tonne-capacity machining centres. Our team can assist with: Machine specification and selection Application engineering Component and machining studies Factory acceptance Installation and commissioning Operator and maintenance training UK technical support Long-term service and calibration For manufacturers looking for a heavy-duty horizontal machining centre with genuine large-component capability, the You Ji HMC Series provides a solution extending far beyond the capacity of a conventional production HMC. TDT Machine Tools – #theBIGmachinecompany 01788 570411