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Wherever there is a need for accurate profiles and high quality surfaces, Peter Wolters of America Inc. says its MACRO series of 4-, 5- and 6-axis grinding machines for deep-groove grinding and high-performance grinding offer results. All machines feature precision linear guide ways, ballscrews and digital drives on all axes. The Siemens 840D CNC allows precision contour dressing and grinding and offers up to 5-axis interpolation. In addition, the MACRO machine range is based on the innovative Moving-Wheel-Head (MWH) concept. Therefore, all linear movements when positioning and grinding are performed by the grinding head. Compared to conventional moving column and moving table concepts, this design, according to the company, arranges the axes in a compact way, which results in optimal force distribution and minimal thermal variation, properties which result in best possible process control over a long lifespan.
Related Glossary Terms
- computer numerical control ( CNC)
computer numerical control ( CNC)
Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.
- dressing
dressing
Removal of undesirable materials from “loaded” grinding wheels using a single- or multi-point diamond or other tool. The process also exposes unused, sharp abrasive points. See loading; truing.
- grinding
grinding
Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.
- interpolation
interpolation
Process of generating a sufficient number of positioning commands for the servomotors driving the machine tool so the path of the tool closely approximates the ideal path. See CNC, computer numerical control; NC, numerical control.
- process control
process control
Method of monitoring a process. Relates to electronic hardware and instrumentation used in automated process control. See in-process gaging, inspection; SPC, statistical process control.
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