Sunday, January 21, 2007

Cylindrical grinder produces boring bars

A Cetos universal cylindrical grinder is being used by Forth Tool and Valve as a key machine in the manufacture of the company's market-leading tooling systems.

A Cetos universal cylindrical grinder is being used by Forth Tooland Valve as a key machine in the manufacture of thecompany's market-leading tooling systems. Supplied by WardCNC of Sheffield, the Cetos BU 25A grinder is being used in theproduction of a range of standard and special-purpose controlledboring bars and facing heads - products for which the Scottishcompany is world renowned. With a swing diameter of 500mm and adistance between centres of 1500mm, the Cetos BU 25A wasinstalled to replace an ageing grinder in the ITS Division, saysgeneral manager, Campbell MacPherson.

'We looked at othercomparable machines,' he comments, 'but chose the Cetosbecause it offered the most economical price-capability package.The fact that it was also available ex-stock from Ward CNC was amajor plus, since we wanted to install it as soon aspossible.' The BU 25A is one of a number of Cetos grindersavailable from Ward CNC.

These also include other universal CNCcylindrical grinders as well as internal/external,single/two-wheelhead cylindrical plunge and crankshaft-typemachines.

Workhead swivel and speeds are 90 degrees and 18 to 560revs/min, and wheelhead swivel is quoted as + 40 degrees to -15degrees.

Able to utilise 500 mm diameter grinding wheels, wheelspeed is 1,695/1,960 revs/min and peripheral wheel speed is45m/sec.

Table feed rate is 0.05m/min to 5 m/min.

The BU 25Afeatures the K51 teach-in CNC - a high-performance control thatallows grinding to be performed under manual control orautomatically, while also accommodating longitudinal grindingwith auto infeed at table reversal points, wheel dressing andintermediate wheel dressing.