Hemburg mikroturn100 horizontal series hard turning center

Hembrug Mikroturn 100 Horizontal Series Finish Hard Turning center  HEMBRUG The hard turning company MACHINE TOOOLS finish hard turning Finish hard turning refers to the process of single-point cutting of hardened pieces within the 2-micron range having hardness between 55 and 68 HRC. It's a simple, reliable, and innovative process and is increasingly gaining ground at the cost of grinding technology. In particular for applications where the manufacturer needs to reduce changeover times. With the Hembrug finish hard turning technology, the more costly and time-consuming cylindrical grinding operations can be easily replaced, without losing part quality. Finish hard turning offers significant advantages over cylindrical grinding Cost-saving Narrow tolerances Multiple operations can be done in one setup, which Finish hard turning allows machining of parts in one setup eliminates the need for a multistep grinding process that results in narrow tolerances, especially for concentricity, squareness, and roundness. One turning machine performs all the operations. More flexibility Environmental friendly With a single-point standard CBN tool and clamping setup, a Hard turning is a dry and environmentally friendly process due to wide variety of parts with different contours and sizes can be the absence of grinding fluids and grinding sludge. machined. This provides more flexibility in production environments and reduces changeover time. Higher productivity Finish hard turning ensures more material removal per machining cycle than grinding. This makes hard turning up to 3 to 4 times faster over cylindrical grinding. Turning within submicron tolerances Hembrug Mikroturn Baseline, 100, and 100 Special are installed. Tolerances of < 2 microns and surface finish Ra micron to finish turn a wide variety of parts that fit within the are no exception anymore. Constant innovation by Hembrug maximum turning diameter of 450 mm. Manufacturers of allows our customers to improve part quality and process automotive parts, bearings, ball screw nuts, and others need reliability. By using Hembrug Mikroturn ultra precision turning to process their hardened steel parts in the sub-micron range. machines today's and future requirements are met. Hydraulic parts Rollers for bearings Ball Screw nut Part: Cylindrical roller Size: 52 x 80 mm Material: 100Cr6 Hardness: 60 HRC Stock: mm Production steps Cylindrical grinding Finish hard turning Machining of raw material Machining of raw material Hardening to max. 60 HRC Hardening to max. 60 HRC Rough grind right face Finish hard turning complete part between centers in one setup Rough grind crown Super finish crown Rough grind left face Finish grind right face Total cycle-time: 45 sec. Finish grind crown Finish grind left face Super finish crown Variation within 3 microns Diameter variation chart in microns A series of 25 parts shows a diameter variation within mm Size min. 52,006 mm Size max. 52,009 mm Form accuracies Δ Roundness error < μm Flatness face < μm Run-out face < μm 0 10 15 20 25 Surface finish Ra. Number of parts Faces < μm Hembrug Mikroturn 100 series is mainly used to machine hardened steel parts up to 68 HRC. However, also cutting of Tungsten Carbide up to 90 HRC has been very successful. Product: Carbide punch Size: x Ø 7 mm Material: WC-13 Co Grain size: - μm Production steps Cylindrical grinding Raw part Grinding of final contour by Reduction of part diameter by Total cycle-time: 10 minutes centerless ground means of contour grinding: means of plunge grinding: 8 min 2 min Hard turning

carbide blank reduction of the diameter: machining of the taper: centreless ground, 1 min 50 sec, 43 sec Detail A Results for a batch size of 12 punches: 31

surface roughness: μm Ra μm RZ R08

accuracy: machining of the final better than Total cycle time: faster Test performed on Hembrug Mikroturn 5 UP turning machine at the Fraunhofer Institute of Production Technology. Hydrostatic main spindle having μm run-out Hydrostatic X- and Z-slide having

μm Siemens 840D s1 CNC repeatability control having micron resolution Headstock housing of natural granite for improved static and dynamic stiffness and thermal stability Rigid natural granite machine base having integrated system of vibration dampers Hembrug hydrostatic slides Natural granite and main spindle machine base High accuracy requirements on precision parts can only be achieved with suitable machine concepts. Required is a superb static and dynamic stiffness, a sub-micrometer run-out of the tool main spindle as well as a high thermal stability. The hydrostatic system in the Hembrug Mikroturn series is superior to any conventional bearing system and offers significant advantages. A new continuous oil film over the entire length of the Excellent damping properties guideways and bearing elements provides excellent High thermal stability damping properties and a high static and dynamic stiffness. High static and dynamic stiffness The absence of metal contact and thus wear ensures a long Free of stress and reliable machine life and low operational costs. corrosion-free The temperature controlled oil flow guarantees thermal stability. Due to the absence of the stick-slip effect, smallest incremental steps of microns are possible. Specifications Mikroturn BaseLine Mikroturn Mikroturn Ą 100 Special Max. part diameter between centers no tailstock t / between centers Max. spindle speed Z-axis travel mm Rapid traverse rate Positioning accuracy Side repeatability CNC resolution Options Air or magnetic operated clamping units Additional options for Mikroturn Special: Precision tailstock 8 0r 12 pos. tool turret with driven or non-driven tooling 8 position tool turret Automated part handling systems Linear tooling Post-process measuring systems Tool presetting probe Spray mist installation Part probing Øm Extended Z-axis stroke to 450 mm Automatic machine door opening Siemens 840D s10 or Fanuc 32i CNC control Automatic chip conveyor Fanuc Oi CNC control Mikroturn 100 Special Compared to Mikroturn 100 in standard version, Mikroturn 100 Special is executed with a robust 2,000 rpm main spindle having an integrated torque motor. This main spindle provides a torque of 249 Nm and allows for the machining of parts. The hydrostatic sides are driven by linear motors having 4m/s2 acceleration and 30 m/min rapid traverse. Hembrug Mikroturn 100 special allows finish hard turning of heavier and larger parts. Turn-key solutions for 24/7 production Hembrug Mikroturn series can be equipped with automated part handling and post-process measuring equipment. All solutions are based on proven technology, combining the advantages of the finish hard turning process with the efficiency of automation. In this way, the highest requirements for ultra-precision serial production can be realized. Hembrug representation all over the world Hembrug has a long tradition in the design and manufacturing of Finish hard turning is increasingly competitive over cylindrical machine tools. Today, we already have more than 45 years grinding technology, and meanwhile, our scope of ultra-precision experience in engineering, manufacturing, and marketing of machines finds a ready sale far beyond Europe. Our head office ultra-precision hydrostatic turning machines. The strength of ours located in Haarlem, the Netherlands. Sales and Service are organization is being able to fulfill manufacturer's needs to improve aided by an extensive network of high-quality agents and current market demands for higher part quality and productivity. distributors worldwide. We have our own sales office in the USA. Engineering focus on today's and Made future demands in The Netherlands The world around us is changing rapidly. In order to meet Hembrug Mikroturn machines are built to order at the Hembrug today's and future customer demands, the Hembrug engineers facility in The Netherlands. All hydrostatic key components are are permanently facing new challenges. New demands on produced in-house. productivity, safety, cost savings, precision, and environment are met by the development of modern machine tools. From dual Hembrug Sales and Service spindle design to hybrid machine concepts that combine turning and grinding or polishing operations: no effort big enough to close to the customer serve our customer's needs. Hembrug Machine Tools: always a few steps ahead of the competition. In offering a full-service package, Hembrug aims to support the customer from transport, commissioning, process development, operator-, programmer-, and maintenance training to the long-term supply of spare parts and after-sales service. Also, inquire after our possibilities for retrofit on older machines. Represented by: ISO9001 Hembrug Machine Tools B.V. H. Figee weg  BJ Haarlem Box HA Haarlem The hard turning company is HEMBRUG The Netherlands MACHINE TOOLS

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Hemburg mikroturn100 horizontal series hard turning center
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