Advertising in MoldMaking Technology offers
Issue link: https://mmt.epubxp.com/i/437786
moldmakingtechnology.com 41 High-Speed Machining Center Built for Mold and Die Work GF Machining Solutions' Mikron HSM 500 MoldMaster (MM) high-speed milling machine is designed as an all-in- one production system, enabling shops to build a range of mold- and die-related components, from 58 Rc steel mold cores to hot pressing dies and sinker-EDM electrodes for intricate mold cavities. The machine is equipped with a 42,000-rpm HSK spindle that uses ceramic hybrid ball bearings with oil-air mini- mal lubrication, as well as liquid-cooled stator jacket and bearings. This vector-controlled motor spindle ensures fast acceleration to full speed as well as high torque at low speeds. As a complement to the high-speed spindle, the machine cuts at feed rates as fast as 784.4 ipm (20 m/min.) and rapid traverses as fast as 1,574.8 ipm (42 m/min.). The HSM 500 MM also features graphite extraction system touch-probe capability and absolute optical linear scales with 20-nanometer step resolution on its X, Y and Z axes for precise machine positioning. The machine also minimizes thermal effects on accuracy through its polymer granite base material and liquid-cooled feed and drive motors, spindle motor, and electrical cabinet. GF Machining Solutions / 847-913-5300 / gfms.com/us United Grinding's Studer S141 universal ID cylindrical grinding machine offers the ability to internally grind longer workpieces common to the machine tool, drive element, aerospace and toolmaking industries. It features two large sliding doors for optimum accessibility and is available in three different design sizes to machine workpieces with maximum lengths of 11.81" (300 mm), 27.56" (700 mm) and 51.18" (1,300 mm), and inside diameters as large as 9.84" (250 mm). The S141's grinding spindle turret accommodates as many as four grinding spindles (including a maximum of two external grinding spindles), a universal measuring probe and internal grinding quills in lengths ranging to 10.433" (265 mm). According to the company, this allows both internal and external machin- ing of workpieces in the same clamping, minimizes non-cut times and boosts part accuracy. With a direct-drive integrated swivel axis and high-resolution measuring system, the turret rotates/positions quickly and precisely for a repeatability of less than 1 angular sec. In addition to a work head that can be direct- or belt-driven, the cylindri- cal grinding machine's workpiece table automatically swivels from -10 to +20 degrees via the machine control for axis-parallel grinding of tapers. As many as two pivoting dressing units for fixed or rotating dressing tools mount on the machine and ensure the grinding wheels stay sharp throughout the machining operations for increased performance and process stability. The machine bed is made of a Granitan S103 mineral casting that dampens vibration and provides thermal stability for improved surface quality and workpiece accuracy. The machine also incorporates the StuderGuide system for its X and Z axes. They are coated with Granitan S200 wear-resistant guide- way surfacing material for high precision and load-bearing capacity, as well as strong damping across the machine's entire speed range. United Grinding / 937-859-1975 / grinding.com Cylindrical Machine Can Internally Grind Long Workpieces Compact CNC Turning Centers Boost Reliability The 8" and 10" Puma GT2100 series turning centers from Doosan are said to incorporate key features of the company's Puma 240, but in a more compact and cost-competitive package, with improved performance, accuracy and reliability. The machines each feature a 23.6" swing-over bed and 15.4" swing-over saddle. Maximum turn- ing diameter is 15.4", maximum bar working diameter is 3.2", and maximum turning length is 22.1". The 30-degree single-piece slant bed is designed to reduce the center of gravity of both spindle and cross-slide. In addition, the company says the amount of structural vibration, or natural frequency (NF), which affects the machine's contouring performance and surface finishes, is 42 percent higher, delivering greater dynamic stability in high-speed operation. Doosan Infracore Machine Tools / 973-618-2500 / doosanmachinetoolsUSA.com