AC 640 DOUBLE-SIDE HIGH-PRECISION FINE GRINDING MACHINE CUSTOMER BENEFITS PETER  WOLTERS AC  640 double-side batch processing machine has been designed for high-precision series processing work pieces. Due to its modular construction, AC 640 can be used as a fine grinding, lapping, honing, and polishing machine. MACHINE FEATURES Like all machines of the microLine© series, AC 640 is based on tried and tested core components such as high-precision, pneumatic pressure system, non-contact micro measuring controller, powerful drive technology, and the PC assisted machine control. Software has been developed by PETER WOLTERS which makes it possible to intuitively operate the machine entirely by menus. Swivel mounted cabinet and frame allow access to the machine interior. The machine is available with different rotating devices, drive powers and wheel speeds to match the widest possible range of work pieces. This ensures optimum machine configuration for every application. AC 640 is available with well-known, tried and tested accessories such as gap formation, alignment device, and dosing system for fine grinding/ lapping or polishing compound. Accessories such as measuring sensor and post-process measurement provide data for statistical process control and offer process security when processing critical work pieces. “Data Care”, the proprietary analysis tool, captures all controller data and thus is the perfect platform for analytic process evaluation, optimization and fault analysis. AC 640 can load and process work pieces with a maximum diameter of 190 mm (7.4803") and a maximum thickness of 65 mm (2.5590"). • Adapts easily to customer’s application requirements • High degree of stiffness and precision • Fast – ergonomic loading and unloading, as well as easy tool changing • Optimum surface quality, flatness, thickness tolerance and plane parallelism with narrowest tolerances on the work piece • Extreme temperature stabilization over the tool surface and therefore constant flatness of the working wheels • Reduced cost per piece, shorter loading, unloading, non-productive times • Comprehensive, clearly structured screens • Excellent machining results due to compliance with freely programmable process parameters • Fast response to load changes (hysteresisfree) • User friendly, intuitive operation • Capable of storing 60 or more processing programs • Low operating costs • Individual process development, highest productivity • Easy to maintain EQUIPMENT • AC 640 can be configured to the respective application and is suitable for grinding, lapping, honing and polishing. • Top variant features constant-torque servo drives. • Size of the work piece to process is the basis for selecting the optimum rotating device. Several variants to choose from. • Machine comes with suitable filters and cooling components depending on the application. • AC 640 can be linked with manual, semi-automatic or fully automatic loading systems.

AC 640 – DOUBLE-SIDE HIGH-PRECISION FINE GRINDING MACHINE TECHNICAL DATA Version Wheel diameter (mm/in) Ring width (mm/in) Upper drive power (kW) Upper drive speed (rpm) Lower drive power (kW) Lower drive speed (rpm) Center drive power (kW) Center drive speed (rpm) Working wheel cooling Cooling Matrix Dimensions (H × W × D) (mm/in) Weight (kg/lbs) Max. work piece thickness (mm/in) Process oriented visualization (Human Machine Interface – HMI): • • Functional Drawing of the PETER WOLTERS AC microLine ® Range • • Upper Working Wheel Precision Pressure System Detailed graphic display of process...