Offered with a 3-axis NC gantry loader as standard an angle-approach, cylindrical grinder has a 320mm swing and 125mm maximum centre distance for grinding small, high precision parts.

New from the grinding machine division of Toyoda will be theGW3A-12, an angle-approach, cylindrical grinder with a 320mmswing and 125 mm maximum centre distance. Available also with astraight approach wheel, the machine is Ideal for grindingrelatively small components such as fuel injector and electronicparts. The machine is the first Toyoda grinder to be offered witha 3-axis NC gantry loader as standard equipment, allowing longperiods of unattended running.

Further integration with otherproduction cells is achieved using pallets or conveyors.

Idealfor use with alumoxide wheels, or with CBN as will bedemonstrated at MACH 2002, the machine has a compact footprintmeasuring only 950mm wide without the loader.

It is also thefirst Toyoda grinder to be fitted with a Fanuc control - the 21iCNC - rather than the manufacturer's own.

This providecontrol of six axes, three for the machine and three for theloader.

A notable feature on this and all other Toyoda grindersis the STAT hydrostatic / hydrodynamic wheel spindle bearing.Absence of metal-to-metal contact and good vibration dampingcharacteristics assure high accuracy and long service life.Grinding speed is 45 m/s, although 60 or 80 m/s is available forCBN.

Other specifications include 219mm wheelhead infeed and20m/min rapid traverse rate; 32 - 1,000 rpm workhead spindlespeed; and 25mm tailstock quill stroke.

A single point, diamondwheel dresser is standard with the machine.

On show also will bethe Toyoda GU4x100 CNC, a universal grinder featuring automaticindexing of the wheelhead under computer control for deployingeither the internal grinding spindle or one of two externalgrinding wheels for straight- and angle-approach.

Poweredindexing of the wheelhead is in five degree or one degreeincrements using a Hirth coupling and hydraulic clamping toensure precise location.

A full B axis is a further option.Available in two versions with 1000mm or 1500mm between centres,the machine has maximum internal and external grinding diametersof 300 mm and 120 mm respectively, 320 mm swing over the tableand a wheel surface speed of 30m/s (optionally 45m/s).