Product category:
Drilling, boring and reaming
News Release from: Bencere Elliott | Subject: Quattro-Cut reaming tools
Edited by the Manufacturingtalk Editorial
Team on 21 June 2005
Indexing reamer has 2 micron repeat
accuracy
The latest generation of high performance reaming tools combine levels of accuracy and surface finish with ease of adjustment and cost savings not previously available.
The latest generation of high performance Quattro-Cut reaming tools from Bencere Elliott combine levels of accuracy and surface finish with ease of adjustment and cost savings not previously available This has been achieved by utilising the cutting technology developed with their successful R-Max reamers with indexable inserts which feature precision single-point setting and clamping facilities
This article was originally published on Manufacturingtalk on 10 Sep 2004 at 8.00am (UK)
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In this way they have successfully minimised the deflection and twist experienced with long boring bars, which can result in vibration and chatter leading to poor surface finishes and tapered holes.
Because of the self-centering effect of their tooling design, Bencere Elliott have also eliminated any problems of repeat accuracy with single point tooling following a tool change operation.
Their latest Quattro-Cut tools utilise a square PCD indexable insert which provides four cutting edges resulting in savings up to 30%.
The inserts are located within a location pocket machined into the tool body which determines the rake angle of the cutting face.
The surface of the pockets are accurately machined with Vee grooves at 90 deg to the centreline of the tool.
Corresponding grooves are also incorporated into the underside of individual inserts, running in two directions as a cross-hatch pattern.
The mating grooves on the insert and location pocket operate as micro machine slides to achieve highly accurate positioning of inserts using only a single point adjustment and clamping screw.
Rotation and resetting of the cutting insert is quickly achieved, with the location grooves also guaranteeing the repeat accuracy of settings.
Bearing pads in the Quattro-Cut are used to maintain both cutting size accuracy and hole concentricity within very fine tolerance levels.
Additional pads can also be incorporated if required, particularly where reaming a hole which incorporates a keyway slot.
The number and positioning of pads prevents tool drop-out and bounce, or may even provide additional mechanical support for other difficult machining operations.
Inserts are currently available in three sizes of 6, 9 or 12mm.
The tooling range is also under constant development including multi-insert reamers for high speed applications and even face cutting variations.
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