Article by: Mapal (Thailand) Co. Ltd. & MEGA Tech Magazine
Getting chips under control with reliable fine machining of steel materials
To ensure reliable chip breaking, MAPAL has developed a new chip guiding stage for machining steel. After all, if long chips are produced during fine machining using tools with guide pads, this can have negative effects on surface quality, dimensional accuracy and an automated process flow. The long chips wrapping themselves around the tool can cause damage.
The new chip guiding stage combats these very problems. Its special geometry, which has been designed and optimised with the aid of extensive FEM analyses and practical testing, means that the chips are broken reliably and automated workflows are not disrupted.The chip guiding stage is compatible with all indexable inserts with AS leads as well as with all coatings. That means that it can be integrated in the relevant insert irrespective of the application in question, thereby producing process reliability.
Machining deep bores without vibration using indexable inserts
During boring processes with large depths or unstable machining conditions, vibration often occurs. This vibration degrades the quality of the bore and has a negative effect on the life of the tool.
MAPAL indexable inserts with arc shaped land have proven successful at eliminating this vibration. Very good results are obtained especially during the machining of cast materials. MAPAL is now combining the technical properties of an arc shaped land with the economic advantages of pressed inserts. The result is a highly cost-effective solution for boring processes with replaceable inserts.
Indexable inserts with arc shaped land are used for example for cylinder bores, during the machining of crankshaft bearing journals, hydraulic housings or also gearboxes for wind energy converters. The arc shaped land is in contact with the bore wall during the machining process and supports the tool. This support surface minimises the vibration that occurs. The arc shaped land is comparable with the arc land chamfer on a reaming tool.
