14 Set MACHINING CENTERS
Two servomotors and two master/slave pinions for accurate positioning. This arrangement prevents backlash, limits static friction problems and enables continuous B-axis machining. The company’s Speed Lock pallet exchange system suits highvolume production pieces without the need for full pallet shuttle systems, shortening time between setups. Supporting automation such as robotic toolchangers, the machine is also available with a selection of optional accessories, including facing heads as well as manual and automatic milling heads.
MICROMACHINING CENTER ACHIEVES 0.25 RA SURFACE FINISH
WILLEMIN-MACODEL INC., BOOTH S-9341
Willemin-Macodel’s 701S micromachining center is designed to machine small, complex workpieces ranging to 52 mm in diameter and 30 mm in length. The micromachining center uses a PC-based control and high-resolution measuring scales (fewer than 10 microns) to perform fast, continuous control loop calculations to ensure submicron contour tracking. This process, called interpolation, reduces trajectory error by as much as ten times compared to conventional machines while shortening cycle times, according to the company.
In addition, the machine has a small footprint (1 × 1 m) and is said to consume less energy than a hair dryer. The micromachining center’s material removal process is said to ensure dimensional and geometric precision while leaving a quality surface finish. The 701S achieves surface finishes of 0.25 Ra, minimizing extra finishing operations and therefore lowering the risk of degrading workpiece geometry. Using a shrink-fit system for the tool spindle, the machine has no need of a toolholder, resulting in the trajector y accuracy needed for machining with small tools. The machine accommodates tools as small as 0.05 mm in diameter and features visualization and probing systems to ensure correct tool and workpiece positioning.