Saw blade regrinder measures blades itself

The time-consuming measuring of saw blades in carbide-tipped circular saw blade regrinding can be eliminated with the new automatic measuring system on the Woodtronic CNC 5 regrinding machine

Companies involved in carbide-tipped circular saw blade regrinding can eliminate the time-consuming and expensive measuring of saw blades with the new automatic measuring system now available on the Walter GB's Woodtronic CNC 5 regrinding machine.

Provided as an integrated feature of the Woodtronic CNC 5 - which is designed for the single-setting regrinding of teeth faces and tops - the automatic saw blade measuring system automatically measures blade diameter, orthogonal rake, grinding length, cutting width, blade kerf and back clearance angle.

The system also obviates the need to manually identify the centre offset of the carbide cutting edge compared to the blade body.

Tooth identification is also a thing of the past with the new system.

Based on the use of two arm-mounted measuring probes, the system applies the probes simultaneously to measure the blade features and, if necessary, transmit grinding wheel compensation data for both the back and front faces.

Containing the identification numbers and geometric parameters for all commercially-available saw blades, Walter's measuring system automatically transfers the relevant data for the blade to be ground into the Woodtronic's control system - against which the measured data is compared.

The result is: * Consistent data input * High-quality measurements based on known (correct) data; and * More economic grinding due to the elimination of manual procedures.

The Walter Woodtronic CNC 5 can handle blades of 80 mm to 1 m diameter, up to 8 mm thick and with tooth pitches of 4 mm to 125 mm.

Grinding spindle drive is 1.1 kW producing spindle speeds of 3,500 rev/min and cutting speeds of 26 m/sec.

An optional infinitely variable spindle drive with 2,000 to 6,000 revs/min is also available.

The use of linear guideways and ballscrews, coupled with three-phase servo motors, ensures consistent high-precision grinding.

Machine specification - and flexibility - can be further improved through the use of the Regrinding Loader.

This promises unrivalled non-stop production performance through the ability to hold up to 60 saw blades of 150 mm to 600 mm diameter (680 mm, optionally) for the automatic grinding of blades in any pre-selected order.

The machine/loader can be pre-programmed without interruption to a grinding operation, thus minimising downtime and increasing utilisation and output.

The Woodtronic CNC 5 boasts the user-friendly WWM Walter Window Mode control system which is a powerful (Pentium PC processor) but easy-to-follow system with operator guidance via clear graphics on a 10.4 inch TFT colour screen.

The Woodtronic is supplied as standard with a series of tooth geometry software programs to cover all geometries.

This includes the Brunswick geometry, where all types of deflection shoulders and chip grooves can be ground; and Walter's Free programming package, which allows operators to quickly and easily create programs for any combinations of tooth shape within the specified diameter on the same saw blade.

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