Product category:
Milling cutters
News Release from: Ceratizit UK | Subject: Indexable insert milling cutters
Edited by the Manufacturingtalk Editorial
Team on 23 March 2007
Indexable insert milling cutters are
rigid
Claimed to be a major advancement in 90 deg corner milling, an indexable insert milling system closely replicates the cutting action of solid carbide tooling.
Ceratizit's MaxiMill 211 indexable insert milling system is a major advancement in 90 deg corner milling and provides a modern alternative to the 15-20 year old technology of the commonly used APKT-style insert, delivering distinct advantages in a variety of machining applications Through major investment in research and development Ceratizit has created a combination of indexable insert and cutter body that closely replicates the cutting action of solid carbide tooling
This article was originally published on Manufacturingtalk on 24 Jan 2006 at 8.00am (UK)
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"We all recognise that indexable insert technology will never cut as quietly as a solid tool," said Conan Jackson, Ceratizit's UK Sales manager Cutting Tools.
"However, in developing the MaxiMill 211 series of cutters and inserts we have overcome many of the intrinsic problems and have designed the cutter system to such a level that we believe we have achieved the optimum in indexable insert technology in terms of quiet machining." In addition to reducing noise levels the cutting action of the MaxiMill 211 system also has the effect of reducing vibration to a minimum and, consequently, imposes very low stress levels on the machine tool.
As far as the end-user is concerned these features result in extended tool life, improved surface finish and, most importantly, increased productivity through the ability to increase feed rates and depths of cut.
Further reading
Grooving insert clamp avoids mill roll reworking
By clamping from below 'stabbing' inserts using eccentric pins and screws, insert clamping failure and groove weld repairing was avoided.
Turning and boring toolholders save time
A range of turning and boring toolholders contain a pocket into which is located a spare shim and TorxPlus screw and the TorxPlus key is conveniently integrated into the shank.
Shoulder milling at the next level
Ceratizit has taken this classic cutter design and moved the square shoulder mill to the next level of high productivity
Typical cutting examples show that it is quite possible to achieve depths of cut up to 10mm with a MaxiMill 211 insert measuring only 11mm in length.
A scenario that results in reduced tooling costs through not having to 'over specify' insert size.
Over and above the development of the soft cutting action Ceratizit also placed great emphasis on the design of the end face of the insert, in particular the design of the 'notch' feature.
"This notch on the end face is of great value when machining closed end slots and pockets and when helical ramping," said Jackson.
"In effect the principle is similar to that employed when using indexable insert drilling, whereby the MaxiMill 211 inserts almost trepan a groove to eliminate cutter push-off and create a rigid machining environment when plunging or ramping." In order to provide the widest application area for MaxiMill 211, Ceratizit offers a range of carbide grades, these being SR226+, GM43+ and the Hypercoat-P grade CTP 1235 for steel; GM246 and Hypercoat-P grade CTP 5235 for stainless steels and the newly developed Hypercoat-C grade CTC3215 for cast iron.
Three new geometries are available; F50 for fine machining of steels and stainless steels; M50 for multi-purpose use on steel and the robust R50 geometry for cast iron, steel and stainless steel.
For light alloys Ceratizit also has its well-proven -27P geometry available.
To compliment the insert development Ceratizit has also designed a new series of cutter bodies to match.
All of the cutter bodies in the 211 system feature a chromium-based coating to extend cutter life.
The extensive range ensures that the widest variety of metal cutting applications can be achieved with System 211.
Typical uses include trachoidal groove milling; peripheral milling; shoulder milling; face milling, ramping, slot milling along with axial and helical plunge.
The cutters are available from 16mm diameter and all feature through tool coolant as standard.
Mounting styles include short and extra-long cylindrical shank, Weldon shank, shell mill and screw type.
"The level of research and development, including the use of finite element analysis that has been invested on both insert and cutter body design has been fully vindicated," said Jackson.
"The resulting cutting performance is a confirmation of the importance that Ceratizit places on improving metalcutting performance through the use of optimised and new carbide grades and coatings.".
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