Placing the production grinder's workhead in the vertical position simplifies component handling on the compact Taiyo Koki IGV 3NT Multi-Process vertical production cylindrical grinding Machine.


Placing the production grinder's workhead in the verticalposition simplifies component handling and makes the set-up andcentring of the workpiece easier on the compact Taiyo Koki IGV3NT Multi-Process Vertical Grinding Machine. In one chucking, theIGV 3NT will perform internal, external and face grinding on aworkpiece in one set-up and to very close tolerances down to 1micron. A grinding spindle turret carries internal and externalgrinding spindles, which the CNC system indexes very quicklybetween external and internal grinding operations.

Taiyo Koki haspaid close attention to the rigidity and ruggedness of the IGV3NT, says Pollard Mori Seiki, which is introducing the machine tothe UK market.

Designed for production grinding of components upto 200mm diameter by 150mm long and a maximum swing of 300mmdiameter, the machine very quickly executes internal, externaland face grinding cycles using a fast indexing grinding spindleturret.

The machine can bring into play a high speed, internalgrinding spindle with a programmable speed range of 9,000-75,000rev/min, using pinwheels 11.5-95mm diameter.

A second grindingspindle is for external grinding and facing, using a programmablewheel speed range of 2,400-3,700 rev/min and a wheel of 355mmdiameter by 65mm face width.

Drive power is 3.7kW.

The 2.2kWworkhead, located on a substantial X-Z worktable on the bed ofthe machine is at a comfortable operator reach height and has aprogrammable speed range of 40-800 rev/min.

A precision,pneumatic 250mm chuck is fitted.

The workhead has a load capacityof 100kg.

The worktable traverses are 460mm for X-axis and 400mmfor the Z-axis.

Traverse rates in both axes are steplesslyvariable, 0-16m/min.

Grinding feed rate is 0 - 16m/min.

Fitted asstandard items are a rotary diamond cup wheel dressingattachment.

Wheel dressing is carried out using a 50mm diamondcup wheel at up to 10,000 rev/min.

Taiyo Koki has designed theIGV 3NT with a massive box structure to ensure rigidity andvibration damping during grinding.

The grinding spindles areoil-cooled and oil-air lubrication is fitted as standard.Optional extras include in-process and post-process work probing,and automatic load/unload equipment.

Ergonomics have alsoreceived special attention; the vertical workhead is easilyaccessible, at a comfortable working height.

The operator caneasily load and unload parts very quickly, when compared withworkhandling on a conventional horizontal spindle productiongrinder.

Automatic workloading, accessing the work area throughthe left-hand side of the machine, is much simplified whencompared with loading a traditional horizontal machine.

The CNCis Fanuc 18i-T with full automatic programming, operator promptsand graphic displays of the grinding process sequences chosen.Programming is in increments down to 0.0001mm, Included arelinear and circular interpolation, oscillation, traverse,multi-cut, plunge-cut and taper grinding features as well aswheel dressing routines.

Summing up, Taiyo Koki has designed avery compact, rugged, production grinder capable of combininggrinding processes and offering a very comfortable operatorworking environment..